From 5394af4d86ae51b369ff243c3f75b6f9a74e164b Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Thu, 8 Jan 2009 13:31:59 +0200 Subject: mac80211: 802.11w - STA flag for MFP Add flags for setting STA entries and struct ieee80211_if_sta to indicate whether management frame protection (MFP) is used. Signed-off-by: Jouni Malinen Acked-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/net/cfg80211.h') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 23c0ab74ded..6619ed10613 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -112,12 +112,14 @@ struct beacon_parameters { * @STATION_FLAG_SHORT_PREAMBLE: station is capable of receiving frames * with short preambles * @STATION_FLAG_WME: station is WME/QoS capable + * @STATION_FLAG_MFP: station uses management frame protection */ enum station_flags { STATION_FLAG_CHANGED = 1<<0, STATION_FLAG_AUTHORIZED = 1< Date: Thu, 8 Jan 2009 13:32:02 +0200 Subject: mac80211: 802.11w - Use BIP (AES-128-CMAC) Add mechanism for managing BIP keys (IGTK) and integrate BIP into the TX/RX paths. Signed-off-by: Jouni Malinen Acked-by: Johannes Berg Signed-off-by: John W. Linville --- drivers/net/wireless/ath5k/pcu.c | 3 ++ include/linux/ieee80211.h | 1 + include/linux/nl80211.h | 6 ++- include/net/cfg80211.h | 5 +++ include/net/mac80211.h | 2 + net/mac80211/cfg.c | 31 ++++++++++++++ net/mac80211/debugfs_key.c | 79 ++++++++++++++++++++++++++++++++++- net/mac80211/debugfs_key.h | 10 +++++ net/mac80211/ieee80211_i.h | 5 ++- net/mac80211/key.c | 62 ++++++++++++++++++++++++++- net/mac80211/key.h | 6 +++ net/mac80211/rx.c | 90 ++++++++++++++++++++++++++++++++++++---- net/mac80211/tx.c | 9 ++++ net/wireless/nl80211.c | 29 +++++++++---- 14 files changed, 317 insertions(+), 21 deletions(-) (limited to 'include/net/cfg80211.h') diff --git a/drivers/net/wireless/ath5k/pcu.c b/drivers/net/wireless/ath5k/pcu.c index 5b416ed6529..e758b70ab7e 100644 --- a/drivers/net/wireless/ath5k/pcu.c +++ b/drivers/net/wireless/ath5k/pcu.c @@ -1026,6 +1026,9 @@ int ath5k_keycache_type(const struct ieee80211_key_conf *key) return AR5K_KEYTABLE_TYPE_40; else if (key->keylen == LEN_WEP104) return AR5K_KEYTABLE_TYPE_104; + return -EINVAL; + default: + return -EINVAL; } return -EINVAL; } diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index cceb9e86c74..df98a8a549a 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1139,6 +1139,7 @@ enum ieee80211_back_parties { /* reserved: 0x000FAC03 */ #define WLAN_CIPHER_SUITE_CCMP 0x000FAC04 #define WLAN_CIPHER_SUITE_WEP104 0x000FAC05 +#define WLAN_CIPHER_SUITE_AES_CMAC 0x000FAC06 #define WLAN_MAX_KEY_LEN 32 diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 218f0e73a7a..ee742bc9761 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -72,8 +72,8 @@ * * @NL80211_CMD_GET_KEY: Get sequence counter information for a key specified * by %NL80211_ATTR_KEY_IDX and/or %NL80211_ATTR_MAC. - * @NL80211_CMD_SET_KEY: Set key attributes %NL80211_ATTR_KEY_DEFAULT or - * %NL80211_ATTR_KEY_THRESHOLD. + * @NL80211_CMD_SET_KEY: Set key attributes %NL80211_ATTR_KEY_DEFAULT, + * %NL80211_ATTR_KEY_DEFAULT_MGMT, or %NL80211_ATTR_KEY_THRESHOLD. * @NL80211_CMD_NEW_KEY: add a key with given %NL80211_ATTR_KEY_DATA, * %NL80211_ATTR_KEY_IDX, %NL80211_ATTR_MAC and %NL80211_ATTR_KEY_CIPHER * attributes. @@ -346,6 +346,8 @@ enum nl80211_attrs { NL80211_ATTR_WIPHY_FREQ, NL80211_ATTR_WIPHY_CHANNEL_TYPE, + NL80211_ATTR_KEY_DEFAULT_MGMT, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 6619ed10613..df78abc496f 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -473,6 +473,8 @@ struct ieee80211_channel; * * @set_default_key: set the default key on an interface * + * @set_default_mgmt_key: set the default management frame key on an interface + * * @add_beacon: Add a beacon with given parameters, @head, @interval * and @dtim_period will be valid, @tail is optional. * @set_beacon: Change the beacon parameters for an access point mode @@ -520,6 +522,9 @@ struct cfg80211_ops { int (*set_default_key)(struct wiphy *wiphy, struct net_device *netdev, u8 key_index); + int (*set_default_mgmt_key)(struct wiphy *wiphy, + struct net_device *netdev, + u8 key_index); int (*add_beacon)(struct wiphy *wiphy, struct net_device *dev, struct beacon_parameters *info); diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 8a305bfdb87..61f1f37a9e2 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -651,11 +651,13 @@ struct ieee80211_if_conf { * @ALG_WEP: WEP40 or WEP104 * @ALG_TKIP: TKIP * @ALG_CCMP: CCMP (AES) + * @ALG_AES_CMAC: AES-128-CMAC */ enum ieee80211_key_alg { ALG_WEP, ALG_TKIP, ALG_CCMP, + ALG_AES_CMAC, }; /** diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 309d9189aa4..72c10691543 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -133,6 +133,9 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, case WLAN_CIPHER_SUITE_CCMP: alg = ALG_CCMP; break; + case WLAN_CIPHER_SUITE_AES_CMAC: + alg = ALG_AES_CMAC; + break; default: return -EINVAL; } @@ -275,6 +278,17 @@ static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, else params.cipher = WLAN_CIPHER_SUITE_WEP104; break; + case ALG_AES_CMAC: + params.cipher = WLAN_CIPHER_SUITE_AES_CMAC; + seq[0] = key->u.aes_cmac.tx_pn[5]; + seq[1] = key->u.aes_cmac.tx_pn[4]; + seq[2] = key->u.aes_cmac.tx_pn[3]; + seq[3] = key->u.aes_cmac.tx_pn[2]; + seq[4] = key->u.aes_cmac.tx_pn[1]; + seq[5] = key->u.aes_cmac.tx_pn[0]; + params.seq = seq; + params.seq_len = 6; + break; } params.key = key->conf.key; @@ -304,6 +318,22 @@ static int ieee80211_config_default_key(struct wiphy *wiphy, return 0; } +static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, + struct net_device *dev, + u8 key_idx) +{ + struct ieee80211_sub_if_data *sdata; + + rcu_read_lock(); + + sdata = IEEE80211_DEV_TO_SUB_IF(dev); + ieee80211_set_default_mgmt_key(sdata, key_idx); + + rcu_read_unlock(); + + return 0; +} + static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) { struct ieee80211_sub_if_data *sdata = sta->sdata; @@ -1153,6 +1183,7 @@ struct cfg80211_ops mac80211_config_ops = { .del_key = ieee80211_del_key, .get_key = ieee80211_get_key, .set_default_key = ieee80211_config_default_key, + .set_default_mgmt_key = ieee80211_config_default_mgmt_key, .add_beacon = ieee80211_add_beacon, .set_beacon = ieee80211_set_beacon, .del_beacon = ieee80211_del_beacon, diff --git a/net/mac80211/debugfs_key.c b/net/mac80211/debugfs_key.c index 6424ac565ae..99c752588b3 100644 --- a/net/mac80211/debugfs_key.c +++ b/net/mac80211/debugfs_key.c @@ -76,6 +76,9 @@ static ssize_t key_algorithm_read(struct file *file, case ALG_CCMP: alg = "CCMP\n"; break; + case ALG_AES_CMAC: + alg = "AES-128-CMAC\n"; + break; default: return 0; } @@ -105,6 +108,12 @@ static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf, len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n", tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]); break; + case ALG_AES_CMAC: + tpn = key->u.aes_cmac.tx_pn; + len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n", + tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], + tpn[5]); + break; default: return 0; } @@ -142,6 +151,14 @@ static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf, } len = p - buf; break; + case ALG_AES_CMAC: + rpn = key->u.aes_cmac.rx_pn; + p += scnprintf(p, sizeof(buf)+buf-p, + "%02x%02x%02x%02x%02x%02x\n", + rpn[0], rpn[1], rpn[2], + rpn[3], rpn[4], rpn[5]); + len = p - buf; + break; default: return 0; } @@ -156,13 +173,40 @@ static ssize_t key_replays_read(struct file *file, char __user *userbuf, char buf[20]; int len; - if (key->conf.alg != ALG_CCMP) + switch (key->conf.alg) { + case ALG_CCMP: + len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays); + break; + case ALG_AES_CMAC: + len = scnprintf(buf, sizeof(buf), "%u\n", + key->u.aes_cmac.replays); + break; + default: return 0; - len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays); + } return simple_read_from_buffer(userbuf, count, ppos, buf, len); } KEY_OPS(replays); +static ssize_t key_icverrors_read(struct file *file, char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct ieee80211_key *key = file->private_data; + char buf[20]; + int len; + + switch (key->conf.alg) { + case ALG_AES_CMAC: + len = scnprintf(buf, sizeof(buf), "%u\n", + key->u.aes_cmac.icverrors); + break; + default: + return 0; + } + return simple_read_from_buffer(userbuf, count, ppos, buf, len); +} +KEY_OPS(icverrors); + static ssize_t key_key_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) { @@ -222,6 +266,7 @@ void ieee80211_debugfs_key_add(struct ieee80211_key *key) DEBUGFS_ADD(tx_spec); DEBUGFS_ADD(rx_spec); DEBUGFS_ADD(replays); + DEBUGFS_ADD(icverrors); DEBUGFS_ADD(key); DEBUGFS_ADD(ifindex); }; @@ -243,6 +288,7 @@ void ieee80211_debugfs_key_remove(struct ieee80211_key *key) DEBUGFS_DEL(tx_spec); DEBUGFS_DEL(rx_spec); DEBUGFS_DEL(replays); + DEBUGFS_DEL(icverrors); DEBUGFS_DEL(key); DEBUGFS_DEL(ifindex); @@ -280,6 +326,35 @@ void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata) sdata->common_debugfs.default_key = NULL; } +void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata) +{ + char buf[50]; + struct ieee80211_key *key; + + if (!sdata->debugfsdir) + return; + + /* this is running under the key lock */ + + key = sdata->default_mgmt_key; + if (key) { + sprintf(buf, "../keys/%d", key->debugfs.cnt); + sdata->common_debugfs.default_mgmt_key = + debugfs_create_symlink("default_mgmt_key", + sdata->debugfsdir, buf); + } else + ieee80211_debugfs_key_remove_mgmt_default(sdata); +} + +void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata) +{ + if (!sdata) + return; + + debugfs_remove(sdata->common_debugfs.default_mgmt_key); + sdata->common_debugfs.default_mgmt_key = NULL; +} + void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key, struct sta_info *sta) { diff --git a/net/mac80211/debugfs_key.h b/net/mac80211/debugfs_key.h index b1a3754ee24..54717b4e137 100644 --- a/net/mac80211/debugfs_key.h +++ b/net/mac80211/debugfs_key.h @@ -6,6 +6,10 @@ void ieee80211_debugfs_key_add(struct ieee80211_key *key); void ieee80211_debugfs_key_remove(struct ieee80211_key *key); void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata); void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata); +void ieee80211_debugfs_key_add_mgmt_default( + struct ieee80211_sub_if_data *sdata); +void ieee80211_debugfs_key_remove_mgmt_default( + struct ieee80211_sub_if_data *sdata); void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key, struct sta_info *sta); #else @@ -19,6 +23,12 @@ static inline void ieee80211_debugfs_key_add_default( static inline void ieee80211_debugfs_key_remove_default( struct ieee80211_sub_if_data *sdata) {} +static inline void ieee80211_debugfs_key_add_mgmt_default( + struct ieee80211_sub_if_data *sdata) +{} +static inline void ieee80211_debugfs_key_remove_mgmt_default( + struct ieee80211_sub_if_data *sdata) +{} static inline void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key, struct sta_info *sta) {} diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 20af92abd61..8c3245717c5 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -409,8 +409,10 @@ struct ieee80211_sub_if_data { unsigned int fragment_next; #define NUM_DEFAULT_KEYS 4 - struct ieee80211_key *keys[NUM_DEFAULT_KEYS]; +#define NUM_DEFAULT_MGMT_KEYS 2 + struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; struct ieee80211_key *default_key; + struct ieee80211_key *default_mgmt_key; u16 sequence_number; @@ -482,6 +484,7 @@ struct ieee80211_sub_if_data { } debugfs; struct { struct dentry *default_key; + struct dentry *default_mgmt_key; } common_debugfs; #ifdef CONFIG_MAC80211_MESH diff --git a/net/mac80211/key.c b/net/mac80211/key.c index b0a025c9b61..19b480de4bb 100644 --- a/net/mac80211/key.c +++ b/net/mac80211/key.c @@ -18,6 +18,7 @@ #include "ieee80211_i.h" #include "debugfs_key.h" #include "aes_ccm.h" +#include "aes_cmac.h" /** @@ -215,13 +216,38 @@ void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx) spin_unlock_irqrestore(&sdata->local->key_lock, flags); } +static void +__ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata, int idx) +{ + struct ieee80211_key *key = NULL; + + if (idx >= NUM_DEFAULT_KEYS && + idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) + key = sdata->keys[idx]; + + rcu_assign_pointer(sdata->default_mgmt_key, key); + + if (key) + add_todo(key, KEY_FLAG_TODO_DEFMGMTKEY); +} + +void ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata, + int idx) +{ + unsigned long flags; + + spin_lock_irqsave(&sdata->local->key_lock, flags); + __ieee80211_set_default_mgmt_key(sdata, idx); + spin_unlock_irqrestore(&sdata->local->key_lock, flags); +} + static void __ieee80211_key_replace(struct ieee80211_sub_if_data *sdata, struct sta_info *sta, struct ieee80211_key *old, struct ieee80211_key *new) { - int idx, defkey; + int idx, defkey, defmgmtkey; if (new) list_add(&new->list, &sdata->key_list); @@ -237,13 +263,19 @@ static void __ieee80211_key_replace(struct ieee80211_sub_if_data *sdata, idx = new->conf.keyidx; defkey = old && sdata->default_key == old; + defmgmtkey = old && sdata->default_mgmt_key == old; if (defkey && !new) __ieee80211_set_default_key(sdata, -1); + if (defmgmtkey && !new) + __ieee80211_set_default_mgmt_key(sdata, -1); rcu_assign_pointer(sdata->keys[idx], new); if (defkey && new) __ieee80211_set_default_key(sdata, new->conf.keyidx); + if (defmgmtkey && new) + __ieee80211_set_default_mgmt_key(sdata, + new->conf.keyidx); } if (old) { @@ -262,7 +294,7 @@ struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg, { struct ieee80211_key *key; - BUG_ON(idx < 0 || idx >= NUM_DEFAULT_KEYS); + BUG_ON(idx < 0 || idx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS); key = kzalloc(sizeof(struct ieee80211_key) + key_len, GFP_KERNEL); if (!key) @@ -291,6 +323,10 @@ struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg, key->conf.iv_len = CCMP_HDR_LEN; key->conf.icv_len = CCMP_MIC_LEN; break; + case ALG_AES_CMAC: + key->conf.iv_len = 0; + key->conf.icv_len = sizeof(struct ieee80211_mmie); + break; } memcpy(key->conf.key, key_data, key_len); INIT_LIST_HEAD(&key->list); @@ -308,6 +344,19 @@ struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg, } } + if (alg == ALG_AES_CMAC) { + /* + * Initialize AES key state here as an optimization so that + * it does not need to be initialized for every packet. + */ + key->u.aes_cmac.tfm = + ieee80211_aes_cmac_key_setup(key_data); + if (!key->u.aes_cmac.tfm) { + kfree(key); + return NULL; + } + } + return key; } @@ -461,6 +510,8 @@ static void __ieee80211_key_destroy(struct ieee80211_key *key) if (key->conf.alg == ALG_CCMP) ieee80211_aes_key_free(key->u.ccmp.tfm); + if (key->conf.alg == ALG_AES_CMAC) + ieee80211_aes_cmac_key_free(key->u.aes_cmac.tfm); ieee80211_debugfs_key_remove(key); kfree(key); @@ -483,6 +534,7 @@ static void __ieee80211_key_todo(void) list_del_init(&key->todo); todoflags = key->flags & (KEY_FLAG_TODO_ADD_DEBUGFS | KEY_FLAG_TODO_DEFKEY | + KEY_FLAG_TODO_DEFMGMTKEY | KEY_FLAG_TODO_HWACCEL_ADD | KEY_FLAG_TODO_HWACCEL_REMOVE | KEY_FLAG_TODO_DELETE); @@ -500,6 +552,11 @@ static void __ieee80211_key_todo(void) ieee80211_debugfs_key_add_default(key->sdata); work_done = true; } + if (todoflags & KEY_FLAG_TODO_DEFMGMTKEY) { + ieee80211_debugfs_key_remove_mgmt_default(key->sdata); + ieee80211_debugfs_key_add_mgmt_default(key->sdata); + work_done = true; + } if (todoflags & KEY_FLAG_TODO_HWACCEL_ADD) { ieee80211_key_enable_hw_accel(key); work_done = true; @@ -535,6 +592,7 @@ void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata) ieee80211_key_lock(); ieee80211_debugfs_key_remove_default(sdata); + ieee80211_debugfs_key_remove_mgmt_default(sdata); spin_lock_irqsave(&sdata->local->key_lock, flags); list_for_each_entry_safe(key, tmp, &sdata->key_list, list) diff --git a/net/mac80211/key.h b/net/mac80211/key.h index 73ac28ca2ed..215d3ef42a4 100644 --- a/net/mac80211/key.h +++ b/net/mac80211/key.h @@ -46,6 +46,8 @@ struct sta_info; * acceleration. * @KEY_FLAG_TODO_DEFKEY: Key is default key and debugfs needs to be updated. * @KEY_FLAG_TODO_ADD_DEBUGFS: Key needs to be added to debugfs. + * @KEY_FLAG_TODO_DEFMGMTKEY: Key is default management key and debugfs needs + * to be updated. */ enum ieee80211_internal_key_flags { KEY_FLAG_UPLOADED_TO_HARDWARE = BIT(0), @@ -54,6 +56,7 @@ enum ieee80211_internal_key_flags { KEY_FLAG_TODO_HWACCEL_REMOVE = BIT(3), KEY_FLAG_TODO_DEFKEY = BIT(4), KEY_FLAG_TODO_ADD_DEBUGFS = BIT(5), + KEY_FLAG_TODO_DEFMGMTKEY = BIT(6), }; struct tkip_ctx { @@ -124,6 +127,7 @@ struct ieee80211_key { struct dentry *tx_spec; struct dentry *rx_spec; struct dentry *replays; + struct dentry *icverrors; struct dentry *key; struct dentry *ifindex; int cnt; @@ -150,6 +154,8 @@ void ieee80211_key_link(struct ieee80211_key *key, struct sta_info *sta); void ieee80211_key_free(struct ieee80211_key *key); void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx); +void ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata, + int idx); void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata); void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata); void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata); diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index b68e082e99c..abc3aa583ca 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -446,6 +446,52 @@ ieee80211_rx_h_passive_scan(struct ieee80211_rx_data *rx) return RX_CONTINUE; } + +static int ieee80211_is_unicast_robust_mgmt_frame(struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + + if (skb->len < 24 || is_multicast_ether_addr(hdr->addr1)) + return 0; + + return ieee80211_is_robust_mgmt_frame(hdr); +} + + +static int ieee80211_is_multicast_robust_mgmt_frame(struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + + if (skb->len < 24 || !is_multicast_ether_addr(hdr->addr1)) + return 0; + + return ieee80211_is_robust_mgmt_frame(hdr); +} + + +/* Get the BIP key index from MMIE; return -1 if this is not a BIP frame */ +static int ieee80211_get_mmie_keyidx(struct sk_buff *skb) +{ + struct ieee80211_mgmt *hdr = (struct ieee80211_mgmt *) skb->data; + struct ieee80211_mmie *mmie; + + if (skb->len < 24 + sizeof(*mmie) || + !is_multicast_ether_addr(hdr->da)) + return -1; + + if (!ieee80211_is_robust_mgmt_frame((struct ieee80211_hdr *) hdr)) + return -1; /* not a robust management frame */ + + mmie = (struct ieee80211_mmie *) + (skb->data + skb->len - sizeof(*mmie)); + if (mmie->element_id != WLAN_EID_MMIE || + mmie->length != sizeof(*mmie) - 2) + return -1; + + return le16_to_cpu(mmie->key_id); +} + + static ieee80211_rx_result ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx) { @@ -561,21 +607,23 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) int hdrlen; ieee80211_rx_result result = RX_DROP_UNUSABLE; struct ieee80211_key *stakey = NULL; + int mmie_keyidx = -1; /* * Key selection 101 * - * There are three types of keys: + * There are four types of keys: * - GTK (group keys) + * - IGTK (group keys for management frames) * - PTK (pairwise keys) * - STK (station-to-station pairwise keys) * * When selecting a key, we have to distinguish between multicast * (including broadcast) and unicast frames, the latter can only - * use PTKs and STKs while the former always use GTKs. Unless, of - * course, actual WEP keys ("pre-RSNA") are used, then unicast - * frames can also use key indizes like GTKs. Hence, if we don't - * have a PTK/STK we check the key index for a WEP key. + * use PTKs and STKs while the former always use GTKs and IGTKs. + * Unless, of course, actual WEP keys ("pre-RSNA") are used, then + * unicast frames can also use key indices like GTKs. Hence, if we + * don't have a PTK/STK we check the key index for a WEP key. * * Note that in a regular BSS, multicast frames are sent by the * AP only, associated stations unicast the frame to the AP first @@ -588,8 +636,14 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) * possible. */ - if (!ieee80211_has_protected(hdr->frame_control)) - return RX_CONTINUE; + if (!ieee80211_has_protected(hdr->frame_control)) { + if (!ieee80211_is_mgmt(hdr->frame_control) || + rx->sta == NULL || !test_sta_flags(rx->sta, WLAN_STA_MFP)) + return RX_CONTINUE; + mmie_keyidx = ieee80211_get_mmie_keyidx(rx->skb); + if (mmie_keyidx < 0) + return RX_CONTINUE; + } /* * No point in finding a key and decrypting if the frame is neither @@ -603,6 +657,16 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) if (!is_multicast_ether_addr(hdr->addr1) && stakey) { rx->key = stakey; + } else if (mmie_keyidx >= 0) { + /* Broadcast/multicast robust management frame / BIP */ + if ((rx->status->flag & RX_FLAG_DECRYPTED) && + (rx->status->flag & RX_FLAG_IV_STRIPPED)) + return RX_CONTINUE; + + if (mmie_keyidx < NUM_DEFAULT_KEYS || + mmie_keyidx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) + return RX_DROP_MONITOR; /* unexpected BIP keyidx */ + rx->key = rcu_dereference(rx->sdata->keys[mmie_keyidx]); } else { /* * The device doesn't give us the IV so we won't be @@ -665,6 +729,9 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) case ALG_CCMP: result = ieee80211_crypto_ccmp_decrypt(rx); break; + case ALG_AES_CMAC: + result = ieee80211_crypto_aes_cmac_decrypt(rx); + break; } /* either the frame has been decrypted or will be dropped */ @@ -1112,6 +1179,15 @@ ieee80211_drop_unencrypted(struct ieee80211_rx_data *rx, __le16 fc) /* Drop unencrypted frames if key is set. */ if (unlikely(!ieee80211_has_protected(fc) && !ieee80211_is_nullfunc(fc) && + (!ieee80211_is_mgmt(fc) || + (ieee80211_is_unicast_robust_mgmt_frame(rx->skb) && + rx->sta && test_sta_flags(rx->sta, WLAN_STA_MFP))) && + (rx->key || rx->sdata->drop_unencrypted))) + return -EACCES; + /* BIP does not use Protected field, so need to check MMIE */ + if (unlikely(rx->sta && test_sta_flags(rx->sta, WLAN_STA_MFP) && + ieee80211_is_multicast_robust_mgmt_frame(rx->skb) && + ieee80211_get_mmie_keyidx(rx->skb) < 0 && (rx->key || rx->sdata->drop_unencrypted))) return -EACCES; diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 50c6c4fabea..ad53ea9e9c7 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -425,6 +425,9 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx) tx->key = NULL; else if (tx->sta && (key = rcu_dereference(tx->sta->key))) tx->key = key; + else if (ieee80211_is_mgmt(hdr->frame_control) && + (key = rcu_dereference(tx->sdata->default_mgmt_key))) + tx->key = key; else if ((key = rcu_dereference(tx->sdata->default_key))) tx->key = key; else if (tx->sdata->drop_unencrypted && @@ -453,6 +456,10 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx) tx->skb)) tx->key = NULL; break; + case ALG_AES_CMAC: + if (!ieee80211_is_mgmt(hdr->frame_control)) + tx->key = NULL; + break; } } @@ -808,6 +815,8 @@ ieee80211_tx_h_encrypt(struct ieee80211_tx_data *tx) return ieee80211_crypto_tkip_encrypt(tx); case ALG_CCMP: return ieee80211_crypto_ccmp_encrypt(tx); + case ALG_AES_CMAC: + return ieee80211_crypto_aes_cmac_encrypt(tx); } /* not reached */ diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 1e728fff474..123d3b160fa 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -738,7 +738,7 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) if (info->attrs[NL80211_ATTR_KEY_IDX]) key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); - if (key_idx > 3) + if (key_idx > 5) return -EINVAL; if (info->attrs[NL80211_ATTR_MAC]) @@ -804,30 +804,41 @@ static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) int err; struct net_device *dev; u8 key_idx; + int (*func)(struct wiphy *wiphy, struct net_device *netdev, + u8 key_index); if (!info->attrs[NL80211_ATTR_KEY_IDX]) return -EINVAL; key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); - if (key_idx > 3) + if (info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) { + if (key_idx < 4 || key_idx > 5) + return -EINVAL; + } else if (key_idx > 3) return -EINVAL; /* currently only support setting default key */ - if (!info->attrs[NL80211_ATTR_KEY_DEFAULT]) + if (!info->attrs[NL80211_ATTR_KEY_DEFAULT] && + !info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) return -EINVAL; err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); if (err) return err; - if (!drv->ops->set_default_key) { + if (info->attrs[NL80211_ATTR_KEY_DEFAULT]) + func = drv->ops->set_default_key; + else + func = drv->ops->set_default_mgmt_key; + + if (!func) { err = -EOPNOTSUPP; goto out; } rtnl_lock(); - err = drv->ops->set_default_key(&drv->wiphy, dev, key_idx); + err = func(&drv->wiphy, dev, key_idx); rtnl_unlock(); out: @@ -863,7 +874,7 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) if (info->attrs[NL80211_ATTR_MAC]) mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); - if (key_idx > 3) + if (key_idx > 5) return -EINVAL; /* @@ -894,6 +905,10 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) if (params.key_len != 13) return -EINVAL; break; + case WLAN_CIPHER_SUITE_AES_CMAC: + if (params.key_len != 16) + return -EINVAL; + break; default: return -EINVAL; } @@ -928,7 +943,7 @@ static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) if (info->attrs[NL80211_ATTR_KEY_IDX]) key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); - if (key_idx > 3) + if (key_idx > 5) return -EINVAL; if (info->attrs[NL80211_ATTR_MAC]) -- cgit v1.2.3-70-g09d2 From 9aed3cc124343d92be6697e9af3928bdfe8eb03e Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Tue, 13 Jan 2009 16:03:29 +0200 Subject: nl80211: New command for adding extra IE(s) into management frames A new nl80211 command, NL80211_CMD_SET_MGMT_EXTRA_IE, can be used to add arbitrary IE data into the end of management frames. The interface allows extra IEs to be configured for each management frame subtype, but only some of them (ProbeReq, ProbeResp, Auth, (Re)AssocReq, Deauth, Disassoc) are currently accepted in mac80211 implementation. This makes it easier to implement IEEE 802.11 extensions like WPS and FT that add IE(s) into some management frames. In addition, this can be useful for testing and experimentation purposes. Signed-off-by: Jouni Malinen Acked-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 22 +++++++++++++ include/net/cfg80211.h | 26 +++++++++++++++ net/mac80211/cfg.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++ net/mac80211/ieee80211_i.h | 16 +++++++++ net/mac80211/iface.c | 7 ++++ net/mac80211/mlme.c | 52 +++++++++++++++++++++++++---- net/wireless/nl80211.c | 47 ++++++++++++++++++++++++++ 7 files changed, 246 insertions(+), 6 deletions(-) (limited to 'include/net/cfg80211.h') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 4e7a7986a52..76aae3d8e97 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -133,6 +133,14 @@ * @NL80211_CMD_SET_MESH_PARAMS: Set mesh networking properties for the * interface identified by %NL80211_ATTR_IFINDEX * + * @NL80211_CMD_SET_MGMT_EXTRA_IE: Set extra IEs for management frames. The + * interface is identified with %NL80211_ATTR_IFINDEX and the management + * frame subtype with %NL80211_ATTR_MGMT_SUBTYPE. The extra IE data to be + * added to the end of the specified management frame is specified with + * %NL80211_ATTR_IE. If the command succeeds, the requested data will be + * added to all specified management frames generated by + * kernel/firmware/driver. + * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use */ @@ -178,6 +186,8 @@ enum nl80211_commands { NL80211_CMD_GET_MESH_PARAMS, NL80211_CMD_SET_MESH_PARAMS, + NL80211_CMD_SET_MGMT_EXTRA_IE, + /* add new commands above here */ /* used to define NL80211_CMD_MAX below */ @@ -190,6 +200,7 @@ enum nl80211_commands { * here */ #define NL80211_CMD_SET_BSS NL80211_CMD_SET_BSS +#define NL80211_CMD_SET_MGMT_EXTRA_IE NL80211_CMD_SET_MGMT_EXTRA_IE /** * enum nl80211_attrs - nl80211 netlink attributes @@ -284,6 +295,12 @@ enum nl80211_commands { * supported interface types, each a flag attribute with the number * of the interface mode. * + * @NL80211_ATTR_MGMT_SUBTYPE: Management frame subtype for + * %NL80211_CMD_SET_MGMT_EXTRA_IE. + * + * @NL80211_ATTR_IE: Information element(s) data (used, e.g., with + * %NL80211_CMD_SET_MGMT_EXTRA_IE). + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -348,6 +365,9 @@ enum nl80211_attrs { NL80211_ATTR_KEY_DEFAULT_MGMT, + NL80211_ATTR_MGMT_SUBTYPE, + NL80211_ATTR_IE, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -363,6 +383,8 @@ enum nl80211_attrs { #define NL80211_ATTR_WIPHY_TXQ_PARAMS NL80211_ATTR_WIPHY_TXQ_PARAMS #define NL80211_ATTR_WIPHY_FREQ NL80211_ATTR_WIPHY_FREQ #define NL80211_ATTR_WIPHY_CHANNEL_TYPE NL80211_ATTR_WIPHY_CHANNEL_TYPE +#define NL80211_ATTR_MGMT_SUBTYPE NL80211_ATTR_MGMT_SUBTYPE +#define NL80211_ATTR_IE NL80211_ATTR_IE #define NL80211_MAX_SUPP_RATES 32 #define NL80211_MAX_SUPP_REG_RULES 32 diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index df78abc496f..c7da88fb15b 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -433,6 +433,26 @@ struct ieee80211_txq_params { u8 aifs; }; +/** + * struct mgmt_extra_ie_params - Extra management frame IE parameters + * + * Used to add extra IE(s) into management frames. If the driver cannot add the + * requested data into all management frames of the specified subtype that are + * generated in kernel or firmware/hardware, it must reject the configuration + * call. The IE data buffer is added to the end of the specified management + * frame body after all other IEs. This addition is not applied to frames that + * are injected through a monitor interface. + * + * @subtype: Management frame subtype + * @ies: IE data buffer or %NULL to remove previous data + * @ies_len: Length of @ies in octets + */ +struct mgmt_extra_ie_params { + u8 subtype; + u8 *ies; + int ies_len; +}; + /* from net/wireless.h */ struct wiphy; @@ -501,6 +521,8 @@ struct ieee80211_channel; * @set_txq_params: Set TX queue parameters * * @set_channel: Set channel + * + * @set_mgmt_extra_ie: Set extra IE data for management frames */ struct cfg80211_ops { int (*add_virtual_intf)(struct wiphy *wiphy, char *name, @@ -571,6 +593,10 @@ struct cfg80211_ops { int (*set_channel)(struct wiphy *wiphy, struct ieee80211_channel *chan, enum nl80211_channel_type channel_type); + + int (*set_mgmt_extra_ie)(struct wiphy *wiphy, + struct net_device *dev, + struct mgmt_extra_ie_params *params); }; /* temporary wext handlers */ diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 72c10691543..d1ac3ab2c51 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1175,6 +1175,87 @@ static int ieee80211_set_channel(struct wiphy *wiphy, return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); } +static int set_mgmt_extra_ie_sta(struct ieee80211_if_sta *ifsta, u8 subtype, + u8 *ies, size_t ies_len) +{ + switch (subtype) { + case IEEE80211_STYPE_PROBE_REQ >> 4: + kfree(ifsta->ie_probereq); + ifsta->ie_probereq = ies; + ifsta->ie_probereq_len = ies_len; + return 0; + case IEEE80211_STYPE_PROBE_RESP >> 4: + kfree(ifsta->ie_proberesp); + ifsta->ie_proberesp = ies; + ifsta->ie_proberesp_len = ies_len; + return 0; + case IEEE80211_STYPE_AUTH >> 4: + kfree(ifsta->ie_auth); + ifsta->ie_auth = ies; + ifsta->ie_auth_len = ies_len; + return 0; + case IEEE80211_STYPE_ASSOC_REQ >> 4: + kfree(ifsta->ie_assocreq); + ifsta->ie_assocreq = ies; + ifsta->ie_assocreq_len = ies_len; + return 0; + case IEEE80211_STYPE_REASSOC_REQ >> 4: + kfree(ifsta->ie_reassocreq); + ifsta->ie_reassocreq = ies; + ifsta->ie_reassocreq_len = ies_len; + return 0; + case IEEE80211_STYPE_DEAUTH >> 4: + kfree(ifsta->ie_deauth); + ifsta->ie_deauth = ies; + ifsta->ie_deauth_len = ies_len; + return 0; + case IEEE80211_STYPE_DISASSOC >> 4: + kfree(ifsta->ie_disassoc); + ifsta->ie_disassoc = ies; + ifsta->ie_disassoc_len = ies_len; + return 0; + } + + return -EOPNOTSUPP; +} + +static int ieee80211_set_mgmt_extra_ie(struct wiphy *wiphy, + struct net_device *dev, + struct mgmt_extra_ie_params *params) +{ + struct ieee80211_sub_if_data *sdata; + u8 *ies; + size_t ies_len; + int ret = -EOPNOTSUPP; + + if (params->ies) { + ies = kmemdup(params->ies, params->ies_len, GFP_KERNEL); + if (ies == NULL) + return -ENOMEM; + ies_len = params->ies_len; + } else { + ies = NULL; + ies_len = 0; + } + + sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + switch (sdata->vif.type) { + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_ADHOC: + ret = set_mgmt_extra_ie_sta(&sdata->u.sta, params->subtype, + ies, ies_len); + break; + default: + ret = -EOPNOTSUPP; + break; + } + + if (ret) + kfree(ies); + return ret; +} + struct cfg80211_ops mac80211_config_ops = { .add_virtual_intf = ieee80211_add_iface, .del_virtual_intf = ieee80211_del_iface, @@ -1204,4 +1285,5 @@ struct cfg80211_ops mac80211_config_ops = { .change_bss = ieee80211_change_bss, .set_txq_params = ieee80211_set_txq_params, .set_channel = ieee80211_set_channel, + .set_mgmt_extra_ie = ieee80211_set_mgmt_extra_ie, }; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index c9ffadb55d3..5eafd3affe2 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -331,6 +331,22 @@ struct ieee80211_if_sta { u32 supp_rates_bits[IEEE80211_NUM_BANDS]; int wmm_last_param_set; + + /* Extra IE data for management frames */ + u8 *ie_probereq; + size_t ie_probereq_len; + u8 *ie_proberesp; + size_t ie_proberesp_len; + u8 *ie_auth; + size_t ie_auth_len; + u8 *ie_assocreq; + size_t ie_assocreq_len; + u8 *ie_reassocreq; + size_t ie_reassocreq_len; + u8 *ie_deauth; + size_t ie_deauth_len; + u8 *ie_disassoc; + size_t ie_disassoc_len; }; struct ieee80211_if_mesh { diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 5d5a029228b..8dc2c2188d9 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -632,6 +632,13 @@ static void ieee80211_teardown_sdata(struct net_device *dev) kfree(sdata->u.sta.assocreq_ies); kfree(sdata->u.sta.assocresp_ies); kfree_skb(sdata->u.sta.probe_resp); + kfree(sdata->u.sta.ie_probereq); + kfree(sdata->u.sta.ie_proberesp); + kfree(sdata->u.sta.ie_auth); + kfree(sdata->u.sta.ie_assocreq); + kfree(sdata->u.sta.ie_reassocreq); + kfree(sdata->u.sta.ie_deauth); + kfree(sdata->u.sta.ie_disassoc); break; case NL80211_IFTYPE_WDS: case NL80211_IFTYPE_AP_VLAN: diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index f0d42498c25..43da6227b37 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -131,6 +131,12 @@ u64 ieee80211_sta_get_rates(struct ieee80211_local *local, /* frame sending functions */ +static void add_extra_ies(struct sk_buff *skb, u8 *ies, size_t ies_len) +{ + if (ies) + memcpy(skb_put(skb, ies_len), ies, ies_len); +} + /* also used by scanning code */ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, u8 *ssid, size_t ssid_len) @@ -142,7 +148,8 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, u8 *pos, *supp_rates, *esupp_rates = NULL; int i; - skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200); + skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 + + sdata->u.sta.ie_probereq_len); if (!skb) { printk(KERN_DEBUG "%s: failed to allocate buffer for probe " "request\n", sdata->dev->name); @@ -189,6 +196,9 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, *pos = rate->bitrate / 5; } + add_extra_ies(skb, sdata->u.sta.ie_probereq, + sdata->u.sta.ie_probereq_len); + ieee80211_tx_skb(sdata, skb, 0); } @@ -202,7 +212,8 @@ static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt; skb = dev_alloc_skb(local->hw.extra_tx_headroom + - sizeof(*mgmt) + 6 + extra_len); + sizeof(*mgmt) + 6 + extra_len + + sdata->u.sta.ie_auth_len); if (!skb) { printk(KERN_DEBUG "%s: failed to allocate buffer for auth " "frame\n", sdata->dev->name); @@ -225,6 +236,7 @@ static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, mgmt->u.auth.status_code = cpu_to_le16(0); if (extra) memcpy(skb_put(skb, extra_len), extra, extra_len); + add_extra_ies(skb, sdata->u.sta.ie_auth, sdata->u.sta.ie_auth_len); ieee80211_tx_skb(sdata, skb, encrypt); } @@ -235,17 +247,26 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, struct ieee80211_local *local = sdata->local; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; - u8 *pos, *ies, *ht_ie; + u8 *pos, *ies, *ht_ie, *e_ies; int i, len, count, rates_len, supp_rates_len; u16 capab; struct ieee80211_bss *bss; int wmm = 0; struct ieee80211_supported_band *sband; u64 rates = 0; + size_t e_ies_len; + + if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { + e_ies = sdata->u.sta.ie_reassocreq; + e_ies_len = sdata->u.sta.ie_reassocreq_len; + } else { + e_ies = sdata->u.sta.ie_assocreq; + e_ies_len = sdata->u.sta.ie_assocreq_len; + } skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 + ifsta->extra_ie_len + - ifsta->ssid_len); + ifsta->ssid_len + e_ies_len); if (!skb) { printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " "frame\n", sdata->dev->name); @@ -436,6 +457,8 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); } + add_extra_ies(skb, e_ies, e_ies_len); + kfree(ifsta->assocreq_ies); ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); @@ -453,8 +476,19 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, struct ieee80211_if_sta *ifsta = &sdata->u.sta; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; + u8 *ies; + size_t ies_len; - skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); + if (stype == IEEE80211_STYPE_DEAUTH) { + ies = sdata->u.sta.ie_deauth; + ies_len = sdata->u.sta.ie_deauth_len; + } else { + ies = sdata->u.sta.ie_disassoc; + ies_len = sdata->u.sta.ie_disassoc_len; + } + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + + ies_len); if (!skb) { printk(KERN_DEBUG "%s: failed to allocate buffer for " "deauth/disassoc frame\n", sdata->dev->name); @@ -472,6 +506,8 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, /* u.deauth.reason_code == u.disassoc.reason_code */ mgmt->u.deauth.reason_code = cpu_to_le16(reason); + add_extra_ies(skb, ies, ies_len); + ieee80211_tx_skb(sdata, skb, ifsta->flags & IEEE80211_STA_MFP_ENABLED); } @@ -1473,7 +1509,8 @@ static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, struct ieee80211_supported_band *sband; union iwreq_data wrqu; - skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); + skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400 + + sdata->u.sta.ie_proberesp_len); if (!skb) { printk(KERN_DEBUG "%s: failed to allocate buffer for probe " "response\n", sdata->dev->name); @@ -1556,6 +1593,9 @@ static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, memcpy(pos, &bss->supp_rates[8], rates); } + add_extra_ies(skb, sdata->u.sta.ie_proberesp, + sdata->u.sta.ie_proberesp_len); + ifsta->probe_resp = skb; ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 123d3b160fa..09a5d0f1d6d 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -105,6 +105,10 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY, .len = NL80211_HT_CAPABILITY_LEN }, + + [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, + [NL80211_ATTR_IE] = { .type = NLA_BINARY, + .len = IEEE80211_MAX_DATA_LEN }, }; /* message building helper */ @@ -2149,6 +2153,43 @@ static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) return -EINVAL; } +static int nl80211_set_mgmt_extra_ie(struct sk_buff *skb, + struct genl_info *info) +{ + struct cfg80211_registered_device *drv; + int err; + struct net_device *dev; + struct mgmt_extra_ie_params params; + + memset(¶ms, 0, sizeof(params)); + + if (!info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) + return -EINVAL; + params.subtype = nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); + if (params.subtype > 15) + return -EINVAL; /* FC Subtype field is 4 bits (0..15) */ + + if (info->attrs[NL80211_ATTR_IE]) { + params.ies = nla_data(info->attrs[NL80211_ATTR_IE]); + params.ies_len = nla_len(info->attrs[NL80211_ATTR_IE]); + } + + err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); + if (err) + return err; + + if (drv->ops->set_mgmt_extra_ie) { + rtnl_lock(); + err = drv->ops->set_mgmt_extra_ie(&drv->wiphy, dev, ¶ms); + rtnl_unlock(); + } else + err = -EOPNOTSUPP; + + cfg80211_put_dev(drv); + dev_put(dev); + return err; +} + static struct genl_ops nl80211_ops[] = { { .cmd = NL80211_CMD_GET_WIPHY, @@ -2310,6 +2351,12 @@ static struct genl_ops nl80211_ops[] = { .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, }, + { + .cmd = NL80211_CMD_SET_MGMT_EXTRA_IE, + .doit = nl80211_set_mgmt_extra_ie, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, }; /* multicast groups */ -- cgit v1.2.3-70-g09d2 From 0378b3f1c49d48ed524eabda7e4340163d9483c9 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 19 Jan 2009 11:20:52 -0500 Subject: cfg80211: add PM hooks This should help implement suspend/resume in mac80211, these hooks will be run before the device is suspended and after it resumes. Therefore, they can touch the hardware as much as they want to. Signed-off-by: Johannes Berg Signed-off-by: Bob Copeland Signed-off-by: John W. Linville --- include/net/cfg80211.h | 6 ++++++ net/wireless/sysfs.c | 30 ++++++++++++++++++++++++++++++ 2 files changed, 36 insertions(+) (limited to 'include/net/cfg80211.h') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index c7da88fb15b..f19c3e16366 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -472,6 +472,9 @@ struct ieee80211_channel; * wireless extensions but this is subject to reevaluation as soon as this * code is used more widely and we have a first user without wext. * + * @suspend: wiphy device needs to be suspended + * @resume: wiphy device needs to be resumed + * * @add_virtual_intf: create a new virtual interface with the given name, * must set the struct wireless_dev's iftype. * @@ -525,6 +528,9 @@ struct ieee80211_channel; * @set_mgmt_extra_ie: Set extra IE data for management frames */ struct cfg80211_ops { + int (*suspend)(struct wiphy *wiphy); + int (*resume)(struct wiphy *wiphy); + int (*add_virtual_intf)(struct wiphy *wiphy, char *name, enum nl80211_iftype type, u32 *flags, struct vif_params *params); diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c index 79a38287764..26a72b0797a 100644 --- a/net/wireless/sysfs.c +++ b/net/wireless/sysfs.c @@ -55,6 +55,34 @@ static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env) } #endif +static int wiphy_suspend(struct device *dev, pm_message_t state) +{ + struct cfg80211_registered_device *rdev = dev_to_rdev(dev); + int ret = 0; + + if (rdev->ops->suspend) { + rtnl_lock(); + ret = rdev->ops->suspend(&rdev->wiphy); + rtnl_unlock(); + } + + return ret; +} + +static int wiphy_resume(struct device *dev) +{ + struct cfg80211_registered_device *rdev = dev_to_rdev(dev); + int ret = 0; + + if (rdev->ops->resume) { + rtnl_lock(); + ret = rdev->ops->resume(&rdev->wiphy); + rtnl_unlock(); + } + + return ret; +} + struct class ieee80211_class = { .name = "ieee80211", .owner = THIS_MODULE, @@ -63,6 +91,8 @@ struct class ieee80211_class = { #ifdef CONFIG_HOTPLUG .dev_uevent = wiphy_uevent, #endif + .suspend = wiphy_suspend, + .resume = wiphy_resume, }; int wiphy_sysfs_init(void) -- cgit v1.2.3-70-g09d2 From 716f9392e2b84cacc18cc11f7427cb98adeb1c3d Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Thu, 22 Jan 2009 15:05:51 -0800 Subject: cfg80211: pass more detailed regulatory request information on reg_notifier() Drivers may need more information than just who set the last regulatory domain, as such lets just pass the last regulatory_request receipt. To do this we need to move out to headers struct regulatory_request, and enum environment_cap. While at it lets add documentation for enum environment_cap. Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- include/net/cfg80211.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ include/net/wireless.h | 3 ++- net/wireless/reg.c | 34 +--------------------------------- net/wireless/reg.h | 7 ------- 4 files changed, 48 insertions(+), 41 deletions(-) (limited to 'include/net/cfg80211.h') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index f19c3e16366..dd1fd51638f 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -357,6 +357,51 @@ enum reg_set_by { REGDOM_SET_BY_COUNTRY_IE, }; +/** + * enum environment_cap - Environment parsed from country IE + * @ENVIRON_ANY: indicates country IE applies to both indoor and + * outdoor operation. + * @ENVIRON_INDOOR: indicates country IE applies only to indoor operation + * @ENVIRON_OUTDOOR: indicates country IE applies only to outdoor operation + */ +enum environment_cap { + ENVIRON_ANY, + ENVIRON_INDOOR, + ENVIRON_OUTDOOR, +}; + +/** + * struct regulatory_request - receipt of last regulatory request + * + * @wiphy: this is set if this request's initiator is + * %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This + * can be used by the wireless core to deal with conflicts + * and potentially inform users of which devices specifically + * cased the conflicts. + * @initiator: indicates who sent this request, could be any of + * of those set in reg_set_by, %REGDOM_SET_BY_* + * @alpha2: the ISO / IEC 3166 alpha2 country code of the requested + * regulatory domain. We have a few special codes: + * 00 - World regulatory domain + * 99 - built by driver but a specific alpha2 cannot be determined + * 98 - result of an intersection between two regulatory domains + * @intersect: indicates whether the wireless core should intersect + * the requested regulatory domain with the presently set regulatory + * domain. + * @country_ie_checksum: checksum of the last processed and accepted + * country IE + * @country_ie_env: lets us know if the AP is telling us we are outdoor, + * indoor, or if it doesn't matter + */ +struct regulatory_request { + struct wiphy *wiphy; + enum reg_set_by initiator; + char alpha2[2]; + bool intersect; + u32 country_ie_checksum; + enum environment_cap country_ie_env; +}; + struct ieee80211_freq_range { u32 start_freq_khz; u32 end_freq_khz; diff --git a/include/net/wireless.h b/include/net/wireless.h index c3f6e462ec2..9c19764a484 100644 --- a/include/net/wireless.h +++ b/include/net/wireless.h @@ -213,7 +213,8 @@ struct wiphy { struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; /* Lets us get back the wiphy on the callback */ - int (*reg_notifier)(struct wiphy *wiphy, enum reg_set_by setby); + int (*reg_notifier)(struct wiphy *wiphy, + struct regulatory_request *request); /* fields below are read-only, assigned by cfg80211 */ diff --git a/net/wireless/reg.c b/net/wireless/reg.c index 81acb07f1d4..cad4daadba0 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -42,38 +42,6 @@ #include "core.h" #include "reg.h" -/** - * struct regulatory_request - receipt of last regulatory request - * - * @wiphy: this is set if this request's initiator is - * %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This - * can be used by the wireless core to deal with conflicts - * and potentially inform users of which devices specifically - * cased the conflicts. - * @initiator: indicates who sent this request, could be any of - * of those set in reg_set_by, %REGDOM_SET_BY_* - * @alpha2: the ISO / IEC 3166 alpha2 country code of the requested - * regulatory domain. We have a few special codes: - * 00 - World regulatory domain - * 99 - built by driver but a specific alpha2 cannot be determined - * 98 - result of an intersection between two regulatory domains - * @intersect: indicates whether the wireless core should intersect - * the requested regulatory domain with the presently set regulatory - * domain. - * @country_ie_checksum: checksum of the last processed and accepted - * country IE - * @country_ie_env: lets us know if the AP is telling us we are outdoor, - * indoor, or if it doesn't matter - */ -struct regulatory_request { - struct wiphy *wiphy; - enum reg_set_by initiator; - char alpha2[2]; - bool intersect; - u32 country_ie_checksum; - enum environment_cap country_ie_env; -}; - /* Receipt of information from last regulatory request */ static struct regulatory_request *last_request; @@ -951,7 +919,7 @@ void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby) handle_band(wiphy, band); } if (wiphy->reg_notifier) - wiphy->reg_notifier(wiphy, setby); + wiphy->reg_notifier(wiphy, last_request); } static void handle_channel_custom(struct wiphy *wiphy, diff --git a/net/wireless/reg.h b/net/wireless/reg.h index a76ea3ff7cd..eb1dd5bc9b2 100644 --- a/net/wireless/reg.h +++ b/net/wireless/reg.h @@ -11,13 +11,6 @@ void regulatory_exit(void); int set_regdom(const struct ieee80211_regdomain *rd); -enum environment_cap { - ENVIRON_ANY, - ENVIRON_INDOOR, - ENVIRON_OUTDOOR, -}; - - /** * __regulatory_hint - hint to the wireless core a regulatory domain * @wiphy: if the hint comes from country information from an AP, this -- cgit v1.2.3-70-g09d2 From 2a5193119269062608582418deba7af82844159a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 10 Feb 2009 21:25:55 +0100 Subject: cfg80211/nl80211: scanning (and mac80211 update to use it) This patch adds basic scan capability to cfg80211/nl80211 and changes mac80211 to use it. The BSS list that cfg80211 maintains is made driver-accessible with a private area in each BSS struct, but mac80211 doesn't yet use it. That's another large project. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-agn.c | 12 +- drivers/net/wireless/iwlwifi/iwl-core.c | 1 + drivers/net/wireless/iwlwifi/iwl-scan.c | 2 +- drivers/net/wireless/iwlwifi/iwl3945-base.c | 17 +- include/linux/nl80211.h | 65 +++ include/net/cfg80211.h | 131 +++++ include/net/mac80211.h | 6 +- include/net/wireless.h | 3 + net/mac80211/cfg.c | 20 + net/mac80211/ieee80211_i.h | 18 +- net/mac80211/iface.c | 2 +- net/mac80211/main.c | 32 +- net/mac80211/mlme.c | 37 +- net/mac80211/scan.c | 356 +++--------- net/mac80211/wext.c | 59 +- net/wireless/Makefile | 2 +- net/wireless/core.c | 8 + net/wireless/core.h | 20 + net/wireless/nl80211.c | 323 +++++++++++ net/wireless/nl80211.h | 8 + net/wireless/scan.c | 807 ++++++++++++++++++++++++++++ 21 files changed, 1546 insertions(+), 383 deletions(-) create mode 100644 net/wireless/scan.c (limited to 'include/net/cfg80211.h') diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index c196abc6db7..539960da7e1 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -2678,11 +2678,19 @@ static void iwl_bss_info_changed(struct ieee80211_hw *hw, } -static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len) +static int iwl_mac_hw_scan(struct ieee80211_hw *hw, + struct cfg80211_scan_request *req) { unsigned long flags; struct iwl_priv *priv = hw->priv; int ret; + u8 *ssid = NULL; + size_t ssid_len = 0; + + if (req->n_ssids) { + ssid = req->ssids[0].ssid; + ssid_len = req->ssids[0].ssid_len; + } IWL_DEBUG_MAC80211(priv, "enter\n"); @@ -2718,7 +2726,7 @@ static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len) if (ssid_len) { priv->one_direct_scan = 1; - priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE); + priv->direct_ssid_len = ssid_len; memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len); } else { priv->one_direct_scan = 0; diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index e18c3f326f7..260bf903cb7 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -1271,6 +1271,7 @@ int iwl_setup_mac(struct iwl_priv *priv) BIT(NL80211_IFTYPE_ADHOC); hw->wiphy->custom_regulatory = true; + hw->wiphy->max_scan_ssids = 1; /* Default value; 4 EDCA QOS priorities */ hw->queues = 4; diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c index 22bad3ce7d6..1ec2b20eb37 100644 --- a/drivers/net/wireless/iwlwifi/iwl-scan.c +++ b/drivers/net/wireless/iwlwifi/iwl-scan.c @@ -860,7 +860,7 @@ void iwl_bg_scan_completed(struct work_struct *work) if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; - ieee80211_scan_completed(priv->hw); + ieee80211_scan_completed(priv->hw, false); /* Since setting the TXPOWER may have been deferred while * performing the scan, fire one off */ diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c index 42cc2884971..0cd8cb96a5e 100644 --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c @@ -4442,15 +4442,23 @@ static void iwl3945_bss_info_changed(struct ieee80211_hw *hw, } -static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len) +static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, + struct cfg80211_scan_request *req) { int rc = 0; unsigned long flags; struct iwl_priv *priv = hw->priv; + size_t len = 0; + u8 *ssid = NULL; DECLARE_SSID_BUF(ssid_buf); IWL_DEBUG_MAC80211(priv, "enter\n"); + if (req->n_ssids) { + ssid = req->ssids[0].ssid; + len = req->ssids[0].ssid_len; + } + mutex_lock(&priv->mutex); spin_lock_irqsave(&priv->lock, flags); @@ -4478,9 +4486,8 @@ static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len) print_ssid(ssid_buf, ssid, len), len); priv->one_direct_scan = 1; - priv->direct_ssid_len = (u8) - min((u8) len, (u8) IW_ESSID_MAX_SIZE); - memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len); + priv->direct_ssid_len = len; + memcpy(priv->direct_ssid, ssid, len); } else priv->one_direct_scan = 0; @@ -5412,6 +5419,8 @@ static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e hw->wiphy->custom_regulatory = true; + hw->wiphy->max_scan_ssids = 1; + /* 4 EDCA QOS priorities */ hw->queues = 4; diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 4bc27049f4e..8802d1bda38 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -143,6 +143,13 @@ * added to all specified management frames generated by * kernel/firmware/driver. * + * @NL80211_CMD_GET_SCAN: get scan results + * @NL80211_CMD_TRIGGER_SCAN: trigger a new scan with the given parameters + * @NL80211_CMD_NEW_SCAN_RESULTS: scan notification (as a reply to + * NL80211_CMD_GET_SCAN and on the "scan" multicast group) + * @NL80211_CMD_SCAN_ABORTED: scan was aborted, for unspecified reasons, + * partial scan results may be available + * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use */ @@ -192,6 +199,11 @@ enum nl80211_commands { NL80211_CMD_GET_REG, + NL80211_CMD_GET_SCAN, + NL80211_CMD_TRIGGER_SCAN, + NL80211_CMD_NEW_SCAN_RESULTS, + NL80211_CMD_SCAN_ABORTED, + /* add new commands above here */ /* used to define NL80211_CMD_MAX below */ @@ -305,6 +317,18 @@ enum nl80211_commands { * @NL80211_ATTR_IE: Information element(s) data (used, e.g., with * %NL80211_CMD_SET_MGMT_EXTRA_IE). * + * @NL80211_ATTR_MAX_NUM_SCAN_SSIDS: number of SSIDs you can scan with + * a single scan request, a wiphy attribute. + * + * @NL80211_ATTR_SCAN_FREQUENCIES: nested attribute with frequencies (in MHz) + * @NL80211_ATTR_SCAN_SSIDS: nested attribute with SSIDs, leave out for passive + * scanning and include a zero-length SSID (wildcard) for wildcard scan + * @NL80211_ATTR_SCAN_GENERATION: the scan generation increases whenever the + * scan result list changes (BSS expired or added) so that applications + * can verify that they got a single, consistent snapshot (when all dump + * messages carried the same generation number) + * @NL80211_ATTR_BSS: scan result BSS + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -372,6 +396,13 @@ enum nl80211_attrs { NL80211_ATTR_MGMT_SUBTYPE, NL80211_ATTR_IE, + NL80211_ATTR_MAX_NUM_SCAN_SSIDS, + + NL80211_ATTR_SCAN_FREQUENCIES, + NL80211_ATTR_SCAN_SSIDS, + NL80211_ATTR_SCAN_GENERATION, + NL80211_ATTR_BSS, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -841,4 +872,38 @@ enum nl80211_channel_type { NL80211_CHAN_HT40MINUS, NL80211_CHAN_HT40PLUS }; + +/** + * enum nl80211_bss - netlink attributes for a BSS + * + * @__NL80211_BSS_INVALID: invalid + * @NL80211_BSS_FREQUENCY: frequency in MHz (u32) + * @NL80211_BSS_TSF: TSF of the received probe response/beacon (u64) + * @NL80211_BSS_BEACON_INTERVAL: beacon interval of the (I)BSS (u16) + * @NL80211_BSS_CAPABILITY: capability field (CPU order, u16) + * @NL80211_BSS_INFORMATION_ELEMENTS: binary attribute containing the + * raw information elements from the probe response/beacon (bin) + * @NL80211_BSS_SIGNAL_MBM: signal strength of probe response/beacon + * in mBm (100 * dBm) (s32) + * @NL80211_BSS_SIGNAL_UNSPEC: signal strength of the probe response/beacon + * in unspecified units, scaled to 0..100 (u8) + * @__NL80211_BSS_AFTER_LAST: internal + * @NL80211_BSS_MAX: highest BSS attribute + */ +enum nl80211_bss { + __NL80211_BSS_INVALID, + NL80211_BSS_BSSID, + NL80211_BSS_FREQUENCY, + NL80211_BSS_TSF, + NL80211_BSS_BEACON_INTERVAL, + NL80211_BSS_CAPABILITY, + NL80211_BSS_INFORMATION_ELEMENTS, + NL80211_BSS_SIGNAL_MBM, + NL80211_BSS_SIGNAL_UNSPEC, + + /* keep last */ + __NL80211_BSS_AFTER_LAST, + NL80211_BSS_MAX = __NL80211_BSS_AFTER_LAST - 1 +}; + #endif /* __LINUX_NL80211_H */ diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index dd1fd51638f..09a0b268e5c 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -4,6 +4,10 @@ #include #include #include +#include +#include +#include +#include #include /* remove once we remove the wext stuff */ #include @@ -504,6 +508,83 @@ struct wiphy; /* from net/ieee80211.h */ struct ieee80211_channel; +/** + * struct cfg80211_ssid - SSID description + * @ssid: the SSID + * @ssid_len: length of the ssid + */ +struct cfg80211_ssid { + u8 ssid[IEEE80211_MAX_SSID_LEN]; + u8 ssid_len; +}; + +/** + * struct cfg80211_scan_request - scan request description + * + * @ssids: SSIDs to scan for (active scan only) + * @n_ssids: number of SSIDs + * @channels: channels to scan on. + * @n_channels: number of channels for each band + * @wiphy: the wiphy this was for + * @ifidx: the interface index + */ +struct cfg80211_scan_request { + struct cfg80211_ssid *ssids; + int n_ssids; + struct ieee80211_channel **channels; + u32 n_channels; + + /* internal */ + struct wiphy *wiphy; + int ifidx; +}; + +/** + * enum cfg80211_signal_type - signal type + * + * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available + * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm) + * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100 + */ +enum cfg80211_signal_type { + CFG80211_SIGNAL_TYPE_NONE, + CFG80211_SIGNAL_TYPE_MBM, + CFG80211_SIGNAL_TYPE_UNSPEC, +}; + +/** + * struct cfg80211_bss - BSS description + * + * This structure describes a BSS (which may also be a mesh network) + * for use in scan results and similar. + * + * @bssid: BSSID of the BSS + * @tsf: timestamp of last received update + * @beacon_interval: the beacon interval as from the frame + * @capability: the capability field in host byte order + * @information_elements: the information elements (Note that there + * is no guarantee that these are well-formed!) + * @len_information_elements: total length of the information elements + * @signal: signal strength value + * @signal_type: signal type + * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes + */ +struct cfg80211_bss { + struct ieee80211_channel *channel; + + u8 bssid[ETH_ALEN]; + u64 tsf; + u16 beacon_interval; + u16 capability; + u8 *information_elements; + size_t len_information_elements; + + s32 signal; + enum cfg80211_signal_type signal_type; + + u8 priv[0] __attribute__((__aligned__(sizeof(void *)))); +}; + /** * struct cfg80211_ops - backend description for wireless configuration * @@ -571,6 +652,11 @@ struct ieee80211_channel; * @set_channel: Set channel * * @set_mgmt_extra_ie: Set extra IE data for management frames + * + * @scan: Request to do a scan. If returning zero, the scan request is given + * the driver, and will be valid until passed to cfg80211_scan_done(). + * For scan results, call cfg80211_inform_bss(); you can call this outside + * the scan/scan_done bracket too. */ struct cfg80211_ops { int (*suspend)(struct wiphy *wiphy); @@ -648,6 +734,9 @@ struct cfg80211_ops { int (*set_mgmt_extra_ie)(struct wiphy *wiphy, struct net_device *dev, struct mgmt_extra_ie_params *params); + + int (*scan)(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_scan_request *request); }; /* temporary wext handlers */ @@ -658,5 +747,47 @@ int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, u32 *mode, char *extra); int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, u32 *mode, char *extra); +int cfg80211_wext_siwscan(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, char *extra); +int cfg80211_wext_giwscan(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *data, char *extra); + +/** + * cfg80211_scan_done - notify that scan finished + * + * @request: the corresponding scan request + * @aborted: set to true if the scan was aborted for any reason, + * userspace will be notified of that + */ +void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); + +/** + * cfg80211_inform_bss - inform cfg80211 of a new BSS + * + * @wiphy: the wiphy reporting the BSS + * @bss: the found BSS + * @gfp: context flags + * + * This informs cfg80211 that BSS information was found and + * the BSS should be updated/added. + */ +struct cfg80211_bss* +cfg80211_inform_bss_frame(struct wiphy *wiphy, + struct ieee80211_channel *channel, + struct ieee80211_mgmt *mgmt, size_t len, + s32 signal, enum cfg80211_signal_type sigtype, + gfp_t gfp); + +struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, + struct ieee80211_channel *channel, + const u8 *bssid, + const u8 *ssid, size_t ssid_len); +struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, + struct ieee80211_channel *channel, + const u8 *meshid, size_t meshidlen, + const u8 *meshcfg); +void cfg80211_put_bss(struct cfg80211_bss *bss); #endif /* __NET_CFG80211_H */ diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 341f3e595eb..88fa3e03e3e 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -1406,7 +1406,8 @@ struct ieee80211_ops { void (*update_tkip_key)(struct ieee80211_hw *hw, struct ieee80211_key_conf *conf, const u8 *address, u32 iv32, u16 *phase1key); - int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len); + int (*hw_scan)(struct ieee80211_hw *hw, + struct cfg80211_scan_request *req); int (*get_stats)(struct ieee80211_hw *hw, struct ieee80211_low_level_stats *stats); void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, @@ -1844,8 +1845,9 @@ void ieee80211_wake_queues(struct ieee80211_hw *hw); * mac80211 that the scan finished. * * @hw: the hardware that finished the scan + * @aborted: set to true if scan was aborted */ -void ieee80211_scan_completed(struct ieee80211_hw *hw); +void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted); /** * ieee80211_iterate_active_interfaces - iterate active interfaces diff --git a/include/net/wireless.h b/include/net/wireless.h index a42c1562d52..1c6285eb166 100644 --- a/include/net/wireless.h +++ b/include/net/wireless.h @@ -213,6 +213,9 @@ struct wiphy { bool custom_regulatory; bool strict_regulatory; + int bss_priv_size; + u8 max_scan_ssids; + /* If multiple wiphys are registered and you're handed e.g. * a regular netdev with assigned ieee80211_ptr, you won't * know whether it points to a wiphy your driver has registered diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 42d692fd9be..c8d969be440 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1277,6 +1277,25 @@ static int ieee80211_resume(struct wiphy *wiphy) #define ieee80211_resume NULL #endif +static int ieee80211_scan(struct wiphy *wiphy, + struct net_device *dev, + struct cfg80211_scan_request *req) +{ + struct ieee80211_sub_if_data *sdata; + + if (!netif_running(dev)) + return -ENETDOWN; + + sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (sdata->vif.type != NL80211_IFTYPE_STATION && + sdata->vif.type != NL80211_IFTYPE_ADHOC && + sdata->vif.type != NL80211_IFTYPE_MESH_POINT) + return -EOPNOTSUPP; + + return ieee80211_request_scan(sdata, req); +} + struct cfg80211_ops mac80211_config_ops = { .add_virtual_intf = ieee80211_add_iface, .del_virtual_intf = ieee80211_del_iface, @@ -1309,4 +1328,5 @@ struct cfg80211_ops mac80211_config_ops = { .set_mgmt_extra_ie = ieee80211_set_mgmt_extra_ie, .suspend = ieee80211_suspend, .resume = ieee80211_resume, + .scan = ieee80211_scan, }; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 9122416fd6a..cbc0b7d647f 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -294,8 +294,6 @@ struct ieee80211_if_sta { u8 ssid[IEEE80211_MAX_SSID_LEN]; enum ieee80211_sta_mlme_state state; size_t ssid_len; - u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; - size_t scan_ssid_len; u16 aid; u16 ap_capab, capab; u8 *extra_ie; /* to be added to the end of AssocReq */ @@ -658,17 +656,18 @@ struct ieee80211_local { /* Scanning and BSS list */ bool sw_scanning, hw_scanning; + struct cfg80211_ssid scan_ssid; + struct cfg80211_scan_request int_scan_req; + struct cfg80211_scan_request *scan_req; + struct ieee80211_channel *scan_channel; int scan_channel_idx; - enum ieee80211_band scan_band; enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state; unsigned long last_scan_completed; struct delayed_work scan_work; struct ieee80211_sub_if_data *scan_sdata; - struct ieee80211_channel *oper_channel, *scan_channel, *csa_channel; enum nl80211_channel_type oper_channel_type; - u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; - size_t scan_ssid_len; + struct ieee80211_channel *oper_channel, *csa_channel; struct list_head bss_list; struct ieee80211_bss *bss_hash[STA_HASH_SIZE]; spinlock_t bss_lock; @@ -929,7 +928,7 @@ void ieee80211_send_pspoll(struct ieee80211_local *local, /* scan/BSS handling */ int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, - u8 *ssid, size_t ssid_len); + struct cfg80211_scan_request *req); int ieee80211_scan_results(struct ieee80211_local *local, struct iw_request_info *info, char *buf, size_t len); @@ -944,14 +943,15 @@ int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata, - u8 *ssid, size_t ssid_len); + struct cfg80211_scan_request *req); struct ieee80211_bss * ieee80211_bss_info_update(struct ieee80211_local *local, struct ieee80211_rx_status *rx_status, struct ieee80211_mgmt *mgmt, size_t len, struct ieee802_11_elems *elems, - int freq, bool beacon); + struct ieee80211_channel *channel, + bool beacon); struct ieee80211_bss * ieee80211_rx_bss_add(struct ieee80211_local *local, u8 *bssid, int freq, u8 *ssid, u8 ssid_len); diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 1c17fb8e405..df94b936526 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -522,7 +522,7 @@ static int ieee80211_stop(struct net_device *dev) * scan event to userspace -- the scan is incomplete. */ if (local->sw_scanning) - ieee80211_scan_completed(&local->hw); + ieee80211_scan_completed(&local->hw, true); } conf.vif = &sdata->vif; diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 956afea4214..954edfbb6b6 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -733,6 +733,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, return NULL; wiphy->privid = mac80211_wiphy_privid; + wiphy->max_scan_ssids = 4; local = wiphy_priv(wiphy); local->hw.wiphy = wiphy; @@ -817,25 +818,33 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) enum ieee80211_band band; struct net_device *mdev; struct ieee80211_master_priv *mpriv; + int channels, i, j; /* * generic code guarantees at least one band, * set this very early because much code assumes * that hw.conf.channel is assigned */ + channels = 0; for (band = 0; band < IEEE80211_NUM_BANDS; band++) { struct ieee80211_supported_band *sband; sband = local->hw.wiphy->bands[band]; - if (sband) { + if (sband && !local->oper_channel) { /* init channel we're on */ local->hw.conf.channel = local->oper_channel = local->scan_channel = &sband->channels[0]; - break; } + if (sband) + channels += sband->n_channels; } + local->int_scan_req.n_channels = channels; + local->int_scan_req.channels = kzalloc(sizeof(void *) * channels, GFP_KERNEL); + if (!local->int_scan_req.channels) + return -ENOMEM; + /* if low-level driver supports AP, we also support VLAN */ if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); @@ -845,7 +854,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) result = wiphy_register(local->hw.wiphy); if (result < 0) - return result; + goto fail_wiphy_register; /* * We use the number of queues for feature tests (QoS, HT) internally @@ -948,6 +957,20 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) ieee80211_led_init(local); + /* alloc internal scan request */ + i = 0; + local->int_scan_req.ssids = &local->scan_ssid; + local->int_scan_req.n_ssids = 1; + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + if (!hw->wiphy->bands[band]) + continue; + for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) { + local->int_scan_req.channels[i] = + &hw->wiphy->bands[band]->channels[j]; + i++; + } + } + return 0; fail_wep: @@ -966,6 +989,8 @@ fail_workqueue: free_netdev(local->mdev); fail_mdev_alloc: wiphy_unregister(local->hw.wiphy); +fail_wiphy_register: + kfree(local->int_scan_req.channels); return result; } EXPORT_SYMBOL(ieee80211_register_hw); @@ -1011,6 +1036,7 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw) ieee80211_wep_free(local); ieee80211_led_exit(local); free_netdev(local->mdev); + kfree(local->int_scan_req.channels); } EXPORT_SYMBOL(ieee80211_unregister_hw); diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index bfc47b33068..46b4817cdea 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1743,7 +1743,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, } bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, - freq, beacon); + channel, beacon); if (!bss) return; @@ -2162,7 +2162,15 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata, printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " "IBSS networks with same SSID (merge)\n", sdata->dev->name); - ieee80211_request_scan(sdata, ifsta->ssid, ifsta->ssid_len); + + /* XXX maybe racy? */ + if (sdata->local->scan_req) + return; + + memcpy(sdata->local->int_scan_req.ssids[0].ssid, + ifsta->ssid, IEEE80211_MAX_SSID_LEN); + sdata->local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len; + ieee80211_request_scan(sdata, &sdata->local->int_scan_req); } @@ -2378,8 +2386,15 @@ dont_join: IEEE80211_SCAN_INTERVAL)) { printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " "join\n", sdata->dev->name); - return ieee80211_request_scan(sdata, ifsta->ssid, - ifsta->ssid_len); + + /* XXX maybe racy? */ + if (local->scan_req) + return -EBUSY; + + memcpy(local->int_scan_req.ssids[0].ssid, + ifsta->ssid, IEEE80211_MAX_SSID_LEN); + local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len; + return ieee80211_request_scan(sdata, &local->int_scan_req); } else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) { int interval = IEEE80211_SCAN_INTERVAL; @@ -2478,11 +2493,16 @@ static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata, } else { if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) { ifsta->assoc_scan_tries++; + /* XXX maybe racy? */ + if (local->scan_req) + return -1; + memcpy(local->int_scan_req.ssids[0].ssid, + ifsta->ssid, IEEE80211_MAX_SSID_LEN); if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) - ieee80211_start_scan(sdata, NULL, 0); + local->int_scan_req.ssids[0].ssid_len = 0; else - ieee80211_start_scan(sdata, ifsta->ssid, - ifsta->ssid_len); + local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len; + ieee80211_start_scan(sdata, &local->int_scan_req); ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); } else { @@ -2520,8 +2540,7 @@ static void ieee80211_sta_work(struct work_struct *work) ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && ifsta->state != IEEE80211_STA_MLME_ASSOCIATE && test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { - ieee80211_start_scan(sdata, ifsta->scan_ssid, - ifsta->scan_ssid_len); + ieee80211_start_scan(sdata, local->scan_req); return; } diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index eddca4e1e13..c6b275b10cf 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -13,6 +13,9 @@ */ /* TODO: + * figure out how to avoid that the "current BSS" expires + * clean up IBSS code (in MLME), see why it adds a BSS to the list + * use cfg80211's BSS handling (depends on IBSS TODO above) * order BSS list by RSSI(?) ("quality of AP") * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE, * SSID) @@ -225,10 +228,26 @@ ieee80211_bss_info_update(struct ieee80211_local *local, struct ieee80211_mgmt *mgmt, size_t len, struct ieee802_11_elems *elems, - int freq, bool beacon) + struct ieee80211_channel *channel, + bool beacon) { struct ieee80211_bss *bss; - int clen; + int clen, freq = channel->center_freq; + enum cfg80211_signal_type sigtype = CFG80211_SIGNAL_TYPE_NONE; + s32 signal = 0; + + if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) { + sigtype = CFG80211_SIGNAL_TYPE_MBM; + signal = rx_status->signal * 100; + } else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) { + sigtype = CFG80211_SIGNAL_TYPE_UNSPEC; + signal = (rx_status->signal * 100) / local->hw.max_signal; + } + + cfg80211_put_bss( + cfg80211_inform_bss_frame(local->hw.wiphy, channel, + mgmt, len, signal, sigtype, + GFP_ATOMIC)); #ifdef CONFIG_MAC80211_MESH if (elems->mesh_config) @@ -401,7 +420,7 @@ ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, bss = ieee80211_bss_info_update(sdata->local, rx_status, mgmt, skb->len, &elems, - freq, beacon); + channel, beacon); if (bss) ieee80211_rx_bss_put(sdata->local, bss); @@ -439,26 +458,22 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local, ieee80211_tx_skb(sdata, skb, 0); } -void ieee80211_scan_completed(struct ieee80211_hw *hw) +void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted) { struct ieee80211_local *local = hw_to_local(hw); struct ieee80211_sub_if_data *sdata; - union iwreq_data wrqu; if (WARN_ON(!local->hw_scanning && !local->sw_scanning)) return; - local->last_scan_completed = jiffies; - memset(&wrqu, 0, sizeof(wrqu)); + if (WARN_ON(!local->scan_req)) + return; - /* - * local->scan_sdata could have been NULLed by the interface - * down code in case we were scanning on an interface that is - * being taken down. - */ - sdata = local->scan_sdata; - if (sdata) - wireless_send_event(sdata->dev, SIOCGIWSCAN, &wrqu, NULL); + if (local->scan_req != &local->int_scan_req) + cfg80211_scan_done(local->scan_req, aborted); + local->scan_req = NULL; + + local->last_scan_completed = jiffies; if (local->hw_scanning) { local->hw_scanning = false; @@ -520,9 +535,8 @@ void ieee80211_scan_work(struct work_struct *work) struct ieee80211_local *local = container_of(work, struct ieee80211_local, scan_work.work); struct ieee80211_sub_if_data *sdata = local->scan_sdata; - struct ieee80211_supported_band *sband; struct ieee80211_channel *chan; - int skip; + int skip, i; unsigned long next_delay = 0; /* @@ -533,33 +547,13 @@ void ieee80211_scan_work(struct work_struct *work) switch (local->scan_state) { case SCAN_SET_CHANNEL: - /* - * Get current scan band. scan_band may be IEEE80211_NUM_BANDS - * after we successfully scanned the last channel of the last - * band (and the last band is supported by the hw) - */ - if (local->scan_band < IEEE80211_NUM_BANDS) - sband = local->hw.wiphy->bands[local->scan_band]; - else - sband = NULL; - - /* - * If we are at an unsupported band and have more bands - * left to scan, advance to the next supported one. - */ - while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) { - local->scan_band++; - sband = local->hw.wiphy->bands[local->scan_band]; - local->scan_channel_idx = 0; - } - /* if no more bands/channels left, complete scan */ - if (!sband || local->scan_channel_idx >= sband->n_channels) { - ieee80211_scan_completed(local_to_hw(local)); + if (local->scan_channel_idx >= local->scan_req->n_channels) { + ieee80211_scan_completed(local_to_hw(local), false); return; } skip = 0; - chan = &sband->channels[local->scan_channel_idx]; + chan = local->scan_req->channels[local->scan_channel_idx]; if (chan->flags & IEEE80211_CHAN_DISABLED || (sdata->vif.type == NL80211_IFTYPE_ADHOC && @@ -575,15 +569,6 @@ void ieee80211_scan_work(struct work_struct *work) /* advance state machine to next channel/band */ local->scan_channel_idx++; - if (local->scan_channel_idx >= sband->n_channels) { - /* - * scan_band may end up == IEEE80211_NUM_BANDS, but - * we'll catch that case above and complete the scan - * if that is the case. - */ - local->scan_band++; - local->scan_channel_idx = 0; - } if (skip) break; @@ -596,10 +581,14 @@ void ieee80211_scan_work(struct work_struct *work) next_delay = IEEE80211_PASSIVE_CHANNEL_TIME; local->scan_state = SCAN_SET_CHANNEL; - if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN) + if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN || + !local->scan_req->n_ssids) break; - ieee80211_send_probe_req(sdata, NULL, local->scan_ssid, - local->scan_ssid_len); + for (i = 0; i < local->scan_req->n_ssids; i++) + ieee80211_send_probe_req( + sdata, NULL, + local->scan_req->ssids[i].ssid, + local->scan_req->ssids[i].ssid_len); next_delay = IEEE80211_CHANNEL_TIME; break; } @@ -610,14 +599,19 @@ void ieee80211_scan_work(struct work_struct *work) int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata, - u8 *ssid, size_t ssid_len) + struct cfg80211_scan_request *req) { struct ieee80211_local *local = scan_sdata->local; struct ieee80211_sub_if_data *sdata; - if (ssid_len > IEEE80211_MAX_SSID_LEN) + if (!req) return -EINVAL; + if (local->scan_req && local->scan_req != req) + return -EBUSY; + + local->scan_req = req; + /* MLME-SCAN.request (page 118) page 144 (11.1.3.1) * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS * BSSID: MACAddress @@ -645,7 +639,7 @@ int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata, int rc; local->hw_scanning = true; - rc = local->ops->hw_scan(local_to_hw(local), ssid, ssid_len); + rc = local->ops->hw_scan(local_to_hw(local), req); if (rc) { local->hw_scanning = false; return rc; @@ -678,15 +672,10 @@ int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata, } mutex_unlock(&local->iflist_mtx); - if (ssid) { - local->scan_ssid_len = ssid_len; - memcpy(local->scan_ssid, ssid, ssid_len); - } else - local->scan_ssid_len = 0; local->scan_state = SCAN_SET_CHANNEL; local->scan_channel_idx = 0; - local->scan_band = IEEE80211_BAND_2GHZ; local->scan_sdata = scan_sdata; + local->scan_req = req; netif_addr_lock_bh(local->mdev); local->filter_flags |= FIF_BCN_PRBRESP_PROMISC; @@ -706,13 +695,21 @@ int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata, int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, - u8 *ssid, size_t ssid_len) + struct cfg80211_scan_request *req) { struct ieee80211_local *local = sdata->local; struct ieee80211_if_sta *ifsta; + if (!req) + return -EINVAL; + + if (local->scan_req && local->scan_req != req) + return -EBUSY; + + local->scan_req = req; + if (sdata->vif.type != NL80211_IFTYPE_STATION) - return ieee80211_start_scan(sdata, ssid, ssid_len); + return ieee80211_start_scan(sdata, req); /* * STA has a state machine that might need to defer scanning @@ -727,241 +724,8 @@ int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, } ifsta = &sdata->u.sta; - - ifsta->scan_ssid_len = ssid_len; - if (ssid_len) - memcpy(ifsta->scan_ssid, ssid, ssid_len); set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request); queue_work(local->hw.workqueue, &ifsta->work); return 0; } - - -static void ieee80211_scan_add_ies(struct iw_request_info *info, - struct ieee80211_bss *bss, - char **current_ev, char *end_buf) -{ - u8 *pos, *end, *next; - struct iw_event iwe; - - if (bss == NULL || bss->ies == NULL) - return; - - /* - * If needed, fragment the IEs buffer (at IE boundaries) into short - * enough fragments to fit into IW_GENERIC_IE_MAX octet messages. - */ - pos = bss->ies; - end = pos + bss->ies_len; - - while (end - pos > IW_GENERIC_IE_MAX) { - next = pos + 2 + pos[1]; - while (next + 2 + next[1] - pos < IW_GENERIC_IE_MAX) - next = next + 2 + next[1]; - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = IWEVGENIE; - iwe.u.data.length = next - pos; - *current_ev = iwe_stream_add_point(info, *current_ev, - end_buf, &iwe, pos); - - pos = next; - } - - if (end > pos) { - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = IWEVGENIE; - iwe.u.data.length = end - pos; - *current_ev = iwe_stream_add_point(info, *current_ev, - end_buf, &iwe, pos); - } -} - - -static char * -ieee80211_scan_result(struct ieee80211_local *local, - struct iw_request_info *info, - struct ieee80211_bss *bss, - char *current_ev, char *end_buf) -{ - struct iw_event iwe; - char *buf; - - if (time_after(jiffies, - bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE)) - return current_ev; - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = SIOCGIWAP; - iwe.u.ap_addr.sa_family = ARPHRD_ETHER; - memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN); - current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, - IW_EV_ADDR_LEN); - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = SIOCGIWESSID; - if (bss_mesh_cfg(bss)) { - iwe.u.data.length = bss_mesh_id_len(bss); - iwe.u.data.flags = 1; - current_ev = iwe_stream_add_point(info, current_ev, end_buf, - &iwe, bss_mesh_id(bss)); - } else { - iwe.u.data.length = bss->ssid_len; - iwe.u.data.flags = 1; - current_ev = iwe_stream_add_point(info, current_ev, end_buf, - &iwe, bss->ssid); - } - - if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS) - || bss_mesh_cfg(bss)) { - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = SIOCGIWMODE; - if (bss_mesh_cfg(bss)) - iwe.u.mode = IW_MODE_MESH; - else if (bss->capability & WLAN_CAPABILITY_ESS) - iwe.u.mode = IW_MODE_MASTER; - else - iwe.u.mode = IW_MODE_ADHOC; - current_ev = iwe_stream_add_event(info, current_ev, end_buf, - &iwe, IW_EV_UINT_LEN); - } - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = SIOCGIWFREQ; - iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq); - iwe.u.freq.e = 0; - current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, - IW_EV_FREQ_LEN); - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = SIOCGIWFREQ; - iwe.u.freq.m = bss->freq; - iwe.u.freq.e = 6; - current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, - IW_EV_FREQ_LEN); - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = IWEVQUAL; - iwe.u.qual.qual = bss->qual; - iwe.u.qual.level = bss->signal; - iwe.u.qual.noise = bss->noise; - iwe.u.qual.updated = local->wstats_flags; - current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, - IW_EV_QUAL_LEN); - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = SIOCGIWENCODE; - if (bss->capability & WLAN_CAPABILITY_PRIVACY) - iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; - else - iwe.u.data.flags = IW_ENCODE_DISABLED; - iwe.u.data.length = 0; - current_ev = iwe_stream_add_point(info, current_ev, end_buf, - &iwe, ""); - - ieee80211_scan_add_ies(info, bss, ¤t_ev, end_buf); - - if (bss->supp_rates_len > 0) { - /* display all supported rates in readable format */ - char *p = current_ev + iwe_stream_lcp_len(info); - int i; - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = SIOCGIWRATE; - /* Those two flags are ignored... */ - iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0; - - for (i = 0; i < bss->supp_rates_len; i++) { - iwe.u.bitrate.value = ((bss->supp_rates[i] & - 0x7f) * 500000); - p = iwe_stream_add_value(info, current_ev, p, - end_buf, &iwe, IW_EV_PARAM_LEN); - } - current_ev = p; - } - - buf = kmalloc(30, GFP_ATOMIC); - if (buf) { - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = IWEVCUSTOM; - sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp)); - iwe.u.data.length = strlen(buf); - current_ev = iwe_stream_add_point(info, current_ev, end_buf, - &iwe, buf); - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = IWEVCUSTOM; - sprintf(buf, " Last beacon: %dms ago", - jiffies_to_msecs(jiffies - bss->last_update)); - iwe.u.data.length = strlen(buf); - current_ev = iwe_stream_add_point(info, current_ev, - end_buf, &iwe, buf); - kfree(buf); - } - - if (bss_mesh_cfg(bss)) { - u8 *cfg = bss_mesh_cfg(bss); - buf = kmalloc(50, GFP_ATOMIC); - if (buf) { - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = IWEVCUSTOM; - sprintf(buf, "Mesh network (version %d)", cfg[0]); - iwe.u.data.length = strlen(buf); - current_ev = iwe_stream_add_point(info, current_ev, - end_buf, - &iwe, buf); - sprintf(buf, "Path Selection Protocol ID: " - "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3], - cfg[4]); - iwe.u.data.length = strlen(buf); - current_ev = iwe_stream_add_point(info, current_ev, - end_buf, - &iwe, buf); - sprintf(buf, "Path Selection Metric ID: " - "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7], - cfg[8]); - iwe.u.data.length = strlen(buf); - current_ev = iwe_stream_add_point(info, current_ev, - end_buf, - &iwe, buf); - sprintf(buf, "Congestion Control Mode ID: " - "0x%02X%02X%02X%02X", cfg[9], cfg[10], - cfg[11], cfg[12]); - iwe.u.data.length = strlen(buf); - current_ev = iwe_stream_add_point(info, current_ev, - end_buf, - &iwe, buf); - sprintf(buf, "Channel Precedence: " - "0x%02X%02X%02X%02X", cfg[13], cfg[14], - cfg[15], cfg[16]); - iwe.u.data.length = strlen(buf); - current_ev = iwe_stream_add_point(info, current_ev, - end_buf, - &iwe, buf); - kfree(buf); - } - } - - return current_ev; -} - - -int ieee80211_scan_results(struct ieee80211_local *local, - struct iw_request_info *info, - char *buf, size_t len) -{ - char *current_ev = buf; - char *end_buf = buf + len; - struct ieee80211_bss *bss; - - spin_lock_bh(&local->bss_lock); - list_for_each_entry(bss, &local->bss_list, list) { - if (buf + len - current_ev <= IW_EV_ADDR_LEN) { - spin_unlock_bh(&local->bss_lock); - return -E2BIG; - } - current_ev = ieee80211_scan_result(local, info, bss, - current_ev, end_buf); - } - spin_unlock_bh(&local->bss_lock); - return current_ev - buf; -} diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c index acd5808b87f..b337d7d5edb 100644 --- a/net/mac80211/wext.c +++ b/net/mac80211/wext.c @@ -173,8 +173,9 @@ static int ieee80211_ioctl_giwrange(struct net_device *dev, range->num_encoding_sizes = 2; range->max_encoding_tokens = NUM_DEFAULT_KEYS; + /* cfg80211 requires this, and enforces 0..100 */ if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) - range->max_qual.level = local->hw.max_signal; + range->max_qual.level = 100; else if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) range->max_qual.level = -110; else @@ -415,58 +416,6 @@ static int ieee80211_ioctl_giwap(struct net_device *dev, } -static int ieee80211_ioctl_siwscan(struct net_device *dev, - struct iw_request_info *info, - union iwreq_data *wrqu, char *extra) -{ - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct iw_scan_req *req = NULL; - u8 *ssid = NULL; - size_t ssid_len = 0; - - if (!netif_running(dev)) - return -ENETDOWN; - - if (sdata->vif.type != NL80211_IFTYPE_STATION && - sdata->vif.type != NL80211_IFTYPE_ADHOC && - sdata->vif.type != NL80211_IFTYPE_MESH_POINT) - return -EOPNOTSUPP; - - /* if SSID was specified explicitly then use that */ - if (wrqu->data.length == sizeof(struct iw_scan_req) && - wrqu->data.flags & IW_SCAN_THIS_ESSID) { - req = (struct iw_scan_req *)extra; - ssid = req->essid; - ssid_len = req->essid_len; - } - - return ieee80211_request_scan(sdata, ssid, ssid_len); -} - - -static int ieee80211_ioctl_giwscan(struct net_device *dev, - struct iw_request_info *info, - struct iw_point *data, char *extra) -{ - int res; - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_sub_if_data *sdata; - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - - if (local->sw_scanning || local->hw_scanning) - return -EAGAIN; - - res = ieee80211_scan_results(local, info, extra, data->length); - if (res >= 0) { - data->length = res; - return 0; - } - data->length = 0; - return res; -} - - static int ieee80211_ioctl_siwrate(struct net_device *dev, struct iw_request_info *info, struct iw_param *rate, char *extra) @@ -1165,8 +1114,8 @@ static const iw_handler ieee80211_handler[] = (iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */ (iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */ (iw_handler) NULL, /* SIOCGIWAPLIST */ - (iw_handler) ieee80211_ioctl_siwscan, /* SIOCSIWSCAN */ - (iw_handler) ieee80211_ioctl_giwscan, /* SIOCGIWSCAN */ + (iw_handler) cfg80211_wext_siwscan, /* SIOCSIWSCAN */ + (iw_handler) cfg80211_wext_giwscan, /* SIOCGIWSCAN */ (iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */ (iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */ (iw_handler) NULL, /* SIOCSIWNICKN */ diff --git a/net/wireless/Makefile b/net/wireless/Makefile index 938a334c8db..dad43c24f69 100644 --- a/net/wireless/Makefile +++ b/net/wireless/Makefile @@ -5,7 +5,7 @@ obj-$(CONFIG_LIB80211_CRYPT_WEP) += lib80211_crypt_wep.o obj-$(CONFIG_LIB80211_CRYPT_CCMP) += lib80211_crypt_ccmp.o obj-$(CONFIG_LIB80211_CRYPT_TKIP) += lib80211_crypt_tkip.o -cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o +cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o cfg80211-$(CONFIG_WIRELESS_EXT) += wext-compat.o cfg80211-$(CONFIG_NL80211) += nl80211.o diff --git a/net/wireless/core.c b/net/wireless/core.c index 12522647608..3cccd1390ce 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -240,6 +240,8 @@ struct wiphy *wiphy_new(struct cfg80211_ops *ops, int sizeof_priv) mutex_init(&drv->mtx); mutex_init(&drv->devlist_mtx); INIT_LIST_HEAD(&drv->netdev_list); + spin_lock_init(&drv->bss_lock); + INIT_LIST_HEAD(&drv->bss_list); device_initialize(&drv->wiphy.dev); drv->wiphy.dev.class = &ieee80211_class; @@ -259,6 +261,9 @@ int wiphy_register(struct wiphy *wiphy) int i; u16 ifmodes = wiphy->interface_modes; + if (WARN_ON(wiphy->max_scan_ssids < 1)) + return -EINVAL; + /* sanity check ifmodes */ WARN_ON(!ifmodes); ifmodes &= ((1 << __NL80211_IFTYPE_AFTER_LAST) - 1) & ~1; @@ -367,8 +372,11 @@ EXPORT_SYMBOL(wiphy_unregister); void cfg80211_dev_free(struct cfg80211_registered_device *drv) { + struct cfg80211_internal_bss *scan, *tmp; mutex_destroy(&drv->mtx); mutex_destroy(&drv->devlist_mtx); + list_for_each_entry_safe(scan, tmp, &drv->bss_list, list) + kfree(scan); kfree(drv); } diff --git a/net/wireless/core.h b/net/wireless/core.h index f7fb9f41302..e29ad4cd464 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -8,6 +8,8 @@ #include #include #include +#include +#include #include #include #include @@ -41,6 +43,13 @@ struct cfg80211_registered_device { struct mutex devlist_mtx; struct list_head netdev_list; + /* BSSes/scanning */ + spinlock_t bss_lock; + struct list_head bss_list; + struct rb_root bss_tree; + u32 bss_generation; + struct cfg80211_scan_request *scan_req; /* protected by RTNL */ + /* must be last because of the way we do wiphy_priv(), * and it should at least be aligned to NETDEV_ALIGN */ struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN))); @@ -56,6 +65,15 @@ struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy) extern struct mutex cfg80211_drv_mutex; extern struct list_head cfg80211_drv_list; +struct cfg80211_internal_bss { + struct list_head list; + struct rb_node rbn; + unsigned long ts; + struct kref ref; + /* must be last because of priv member */ + struct cfg80211_bss pub; +}; + /* * This function returns a pointer to the driver * that the genl_info item that is passed refers to. @@ -94,4 +112,6 @@ extern int cfg80211_dev_rename(struct cfg80211_registered_device *drv, void ieee80211_set_bitrate_flags(struct wiphy *wiphy); void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby); +void cfg80211_bss_expire(struct cfg80211_registered_device *dev); + #endif /* __NET_WIRELESS_CORE_H */ diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index d452396006e..298a4de5994 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include "core.h" @@ -109,6 +110,8 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, [NL80211_ATTR_IE] = { .type = NLA_BINARY, .len = IEEE80211_MAX_DATA_LEN }, + [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, + [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, }; /* message building helper */ @@ -141,6 +144,8 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx); NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); + NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, + dev->wiphy.max_scan_ssids); nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES); if (!nl_modes) @@ -2270,6 +2275,246 @@ static int nl80211_set_mgmt_extra_ie(struct sk_buff *skb, return err; } +static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *drv; + struct net_device *dev; + struct cfg80211_scan_request *request; + struct cfg80211_ssid *ssid; + struct ieee80211_channel *channel; + struct nlattr *attr; + struct wiphy *wiphy; + int err, tmp, n_ssids = 0, n_channels = 0, i; + enum ieee80211_band band; + + err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); + if (err) + return err; + + wiphy = &drv->wiphy; + + if (!drv->ops->scan) { + err = -EOPNOTSUPP; + goto out; + } + + rtnl_lock(); + + if (drv->scan_req) { + err = -EBUSY; + goto out_unlock; + } + + if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { + nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) + n_channels++; + if (!n_channels) { + err = -EINVAL; + goto out_unlock; + } + } else { + for (band = 0; band < IEEE80211_NUM_BANDS; band++) + if (wiphy->bands[band]) + n_channels += wiphy->bands[band]->n_channels; + } + + if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) + nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) + n_ssids++; + + if (n_ssids > wiphy->max_scan_ssids) { + err = -EINVAL; + goto out_unlock; + } + + request = kzalloc(sizeof(*request) + + sizeof(*ssid) * n_ssids + + sizeof(channel) * n_channels, GFP_KERNEL); + if (!request) { + err = -ENOMEM; + goto out_unlock; + } + + request->channels = (void *)((char *)request + sizeof(*request)); + request->n_channels = n_channels; + if (n_ssids) + request->ssids = (void *)(request->channels + n_channels); + request->n_ssids = n_ssids; + + if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { + /* user specified, bail out if channel not found */ + request->n_channels = n_channels; + i = 0; + nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { + request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr)); + if (!request->channels[i]) { + err = -EINVAL; + goto out_free; + } + i++; + } + } else { + /* all channels */ + i = 0; + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + int j; + if (!wiphy->bands[band]) + continue; + for (j = 0; j < wiphy->bands[band]->n_channels; j++) { + request->channels[i] = &wiphy->bands[band]->channels[j]; + i++; + } + } + } + + i = 0; + if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { + nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { + if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) { + err = -EINVAL; + goto out_free; + } + memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); + request->ssids[i].ssid_len = nla_len(attr); + i++; + } + } + + request->ifidx = dev->ifindex; + request->wiphy = &drv->wiphy; + + drv->scan_req = request; + err = drv->ops->scan(&drv->wiphy, dev, request); + + out_free: + if (err) { + drv->scan_req = NULL; + kfree(request); + } + out_unlock: + rtnl_unlock(); + out: + cfg80211_put_dev(drv); + dev_put(dev); + return err; +} + +static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags, + struct cfg80211_registered_device *rdev, + struct net_device *dev, + struct cfg80211_bss *res) +{ + void *hdr; + struct nlattr *bss; + + hdr = nl80211hdr_put(msg, pid, seq, flags, + NL80211_CMD_NEW_SCAN_RESULTS); + if (!hdr) + return -1; + + NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION, + rdev->bss_generation); + NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); + + bss = nla_nest_start(msg, NL80211_ATTR_BSS); + if (!bss) + goto nla_put_failure; + if (!is_zero_ether_addr(res->bssid)) + NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid); + if (res->information_elements && res->len_information_elements) + NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS, + res->len_information_elements, + res->information_elements); + if (res->tsf) + NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf); + if (res->beacon_interval) + NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval); + NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability); + NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq); + + switch (res->signal_type) { + case CFG80211_SIGNAL_TYPE_MBM: + NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal); + break; + case CFG80211_SIGNAL_TYPE_UNSPEC: + NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal); + break; + default: + break; + } + + nla_nest_end(msg, bss); + + return genlmsg_end(msg, hdr); + + nla_put_failure: + genlmsg_cancel(msg, hdr); + return -EMSGSIZE; +} + +static int nl80211_dump_scan(struct sk_buff *skb, + struct netlink_callback *cb) +{ + struct cfg80211_registered_device *dev; + struct net_device *netdev; + struct cfg80211_internal_bss *scan; + int ifidx = cb->args[0]; + int start = cb->args[1], idx = 0; + int err; + + if (!ifidx) { + err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, + nl80211_fam.attrbuf, nl80211_fam.maxattr, + nl80211_policy); + if (err) + return err; + + if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) + return -EINVAL; + + ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); + if (!ifidx) + return -EINVAL; + cb->args[0] = ifidx; + } + + netdev = dev_get_by_index(&init_net, ifidx); + if (!netdev) + return -ENODEV; + + dev = cfg80211_get_dev_from_ifindex(ifidx); + if (IS_ERR(dev)) { + err = PTR_ERR(dev); + goto out_put_netdev; + } + + spin_lock_bh(&dev->bss_lock); + cfg80211_bss_expire(dev); + + list_for_each_entry(scan, &dev->bss_list, list) { + if (++idx <= start) + continue; + if (nl80211_send_bss(skb, + NETLINK_CB(cb->skb).pid, + cb->nlh->nlmsg_seq, NLM_F_MULTI, + dev, netdev, &scan->pub) < 0) { + idx--; + goto out; + } + } + + out: + spin_unlock_bh(&dev->bss_lock); + + cb->args[1] = idx; + err = skb->len; + cfg80211_put_dev(dev); + out_put_netdev: + dev_put(netdev); + + return err; +} + static struct genl_ops nl80211_ops[] = { { .cmd = NL80211_CMD_GET_WIPHY, @@ -2443,12 +2688,26 @@ static struct genl_ops nl80211_ops[] = { .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, }, + { + .cmd = NL80211_CMD_TRIGGER_SCAN, + .doit = nl80211_trigger_scan, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, + { + .cmd = NL80211_CMD_GET_SCAN, + .policy = nl80211_policy, + .dumpit = nl80211_dump_scan, + }, }; /* multicast groups */ static struct genl_multicast_group nl80211_config_mcgrp = { .name = "config", }; +static struct genl_multicast_group nl80211_scan_mcgrp = { + .name = "scan", +}; /* notification functions */ @@ -2468,6 +2727,66 @@ void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL); } +static int nl80211_send_scan_donemsg(struct sk_buff *msg, + struct cfg80211_registered_device *rdev, + struct net_device *netdev, + u32 pid, u32 seq, int flags, + u32 cmd) +{ + void *hdr; + + hdr = nl80211hdr_put(msg, pid, seq, flags, cmd); + if (!hdr) + return -1; + + NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->idx); + NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); + + /* XXX: we should probably bounce back the request? */ + + return genlmsg_end(msg, hdr); + + nla_put_failure: + genlmsg_cancel(msg, hdr); + return -EMSGSIZE; +} + +void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, + struct net_device *netdev) +{ + struct sk_buff *msg; + + msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); + if (!msg) + return; + + if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0, + NL80211_CMD_NEW_SCAN_RESULTS) < 0) { + nlmsg_free(msg); + return; + } + + genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL); +} + +void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, + struct net_device *netdev) +{ + struct sk_buff *msg; + + msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); + if (!msg) + return; + + if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0, + NL80211_CMD_SCAN_ABORTED) < 0) { + nlmsg_free(msg); + return; + } + + genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL); +} + /* initialisation/exit functions */ int nl80211_init(void) @@ -2488,6 +2807,10 @@ int nl80211_init(void) if (err) goto err_out; + err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp); + if (err) + goto err_out; + return 0; err_out: genl_unregister_family(&nl80211_fam); diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h index f3ea5c029ae..b565a5f84e9 100644 --- a/net/wireless/nl80211.h +++ b/net/wireless/nl80211.h @@ -7,6 +7,10 @@ extern int nl80211_init(void); extern void nl80211_exit(void); extern void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev); +extern void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, + struct net_device *netdev); +extern void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, + struct net_device *netdev); #else static inline int nl80211_init(void) { @@ -19,6 +23,10 @@ static inline void nl80211_notify_dev_rename( struct cfg80211_registered_device *rdev) { } +static inline void +nl80211_send_scan_done(struct cfg80211_registered_device *rdev, + struct net_device *netdev) +{} #endif /* CONFIG_NL80211 */ #endif /* __NET_WIRELESS_NL80211_H */ diff --git a/net/wireless/scan.c b/net/wireless/scan.c new file mode 100644 index 00000000000..009d12810c5 --- /dev/null +++ b/net/wireless/scan.c @@ -0,0 +1,807 @@ +/* + * cfg80211 scan result handling + * + * Copyright 2008 Johannes Berg + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "core.h" +#include "nl80211.h" + +#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) + +void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted) +{ + struct net_device *dev; +#ifdef CONFIG_WIRELESS_EXT + union iwreq_data wrqu; +#endif + + dev = dev_get_by_index(&init_net, request->ifidx); + if (!dev) + goto out; + + WARN_ON(request != wiphy_to_dev(request->wiphy)->scan_req); + wiphy_to_dev(request->wiphy)->scan_req = NULL; + + if (aborted) + nl80211_send_scan_aborted(wiphy_to_dev(request->wiphy), dev); + else + nl80211_send_scan_done(wiphy_to_dev(request->wiphy), dev); + +#ifdef CONFIG_WIRELESS_EXT + if (!aborted) { + memset(&wrqu, 0, sizeof(wrqu)); + + wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL); + } +#endif + + dev_put(dev); + + out: + kfree(request); +} +EXPORT_SYMBOL(cfg80211_scan_done); + +static void bss_release(struct kref *ref) +{ + struct cfg80211_internal_bss *bss; + + bss = container_of(ref, struct cfg80211_internal_bss, ref); + kfree(bss); +} + +/* must hold dev->bss_lock! */ +void cfg80211_bss_expire(struct cfg80211_registered_device *dev) +{ + struct cfg80211_internal_bss *bss, *tmp; + bool expired = false; + + list_for_each_entry_safe(bss, tmp, &dev->bss_list, list) { + if (!time_after(jiffies, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE)) + continue; + list_del(&bss->list); + rb_erase(&bss->rbn, &dev->bss_tree); + kref_put(&bss->ref, bss_release); + expired = true; + } + + if (expired) + dev->bss_generation++; +} + +static u8 *find_ie(u8 num, u8 *ies, size_t len) +{ + while (len > 2 && ies[0] != num) { + len -= ies[1] + 2; + ies += ies[1] + 2; + } + if (len < 2) + return NULL; + if (len < 2 + ies[1]) + return NULL; + return ies; +} + +static int cmp_ies(u8 num, u8 *ies1, size_t len1, u8 *ies2, size_t len2) +{ + const u8 *ie1 = find_ie(num, ies1, len1); + const u8 *ie2 = find_ie(num, ies2, len2); + int r; + + if (!ie1 && !ie2) + return 0; + if (!ie1) + return -1; + + r = memcmp(ie1 + 2, ie2 + 2, min(ie1[1], ie2[1])); + if (r == 0 && ie1[1] != ie2[1]) + return ie2[1] - ie1[1]; + return r; +} + +static bool is_bss(struct cfg80211_bss *a, + const u8 *bssid, + const u8 *ssid, size_t ssid_len) +{ + const u8 *ssidie; + + if (compare_ether_addr(a->bssid, bssid)) + return false; + + ssidie = find_ie(WLAN_EID_SSID, + a->information_elements, + a->len_information_elements); + if (!ssidie) + return false; + if (ssidie[1] != ssid_len) + return false; + return memcmp(ssidie + 2, ssid, ssid_len) == 0; +} + +static bool is_mesh(struct cfg80211_bss *a, + const u8 *meshid, size_t meshidlen, + const u8 *meshcfg) +{ + const u8 *ie; + + if (!is_zero_ether_addr(a->bssid)) + return false; + + ie = find_ie(WLAN_EID_MESH_ID, + a->information_elements, + a->len_information_elements); + if (!ie) + return false; + if (ie[1] != meshidlen) + return false; + if (memcmp(ie + 2, meshid, meshidlen)) + return false; + + ie = find_ie(WLAN_EID_MESH_CONFIG, + a->information_elements, + a->len_information_elements); + if (ie[1] != IEEE80211_MESH_CONFIG_LEN) + return false; + + /* + * Ignore mesh capability (last two bytes of the IE) when + * comparing since that may differ between stations taking + * part in the same mesh. + */ + return memcmp(ie + 2, meshcfg, IEEE80211_MESH_CONFIG_LEN - 2) == 0; +} + +static int cmp_bss(struct cfg80211_bss *a, + struct cfg80211_bss *b) +{ + int r; + + if (a->channel != b->channel) + return b->channel->center_freq - a->channel->center_freq; + + r = memcmp(a->bssid, b->bssid, ETH_ALEN); + if (r) + return r; + + if (is_zero_ether_addr(a->bssid)) { + r = cmp_ies(WLAN_EID_MESH_ID, + a->information_elements, + a->len_information_elements, + b->information_elements, + b->len_information_elements); + if (r) + return r; + return cmp_ies(WLAN_EID_MESH_CONFIG, + a->information_elements, + a->len_information_elements, + b->information_elements, + b->len_information_elements); + } + + return cmp_ies(WLAN_EID_SSID, + a->information_elements, + a->len_information_elements, + b->information_elements, + b->len_information_elements); +} + +struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, + struct ieee80211_channel *channel, + const u8 *bssid, + const u8 *ssid, size_t ssid_len) +{ + struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy); + struct cfg80211_internal_bss *bss, *res = NULL; + + spin_lock_bh(&dev->bss_lock); + + list_for_each_entry(bss, &dev->bss_list, list) { + if (channel && bss->pub.channel != channel) + continue; + if (is_bss(&bss->pub, bssid, ssid, ssid_len)) { + res = bss; + kref_get(&res->ref); + break; + } + } + + spin_unlock_bh(&dev->bss_lock); + if (!res) + return NULL; + return &res->pub; +} +EXPORT_SYMBOL(cfg80211_get_bss); + +struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, + struct ieee80211_channel *channel, + const u8 *meshid, size_t meshidlen, + const u8 *meshcfg) +{ + struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy); + struct cfg80211_internal_bss *bss, *res = NULL; + + spin_lock_bh(&dev->bss_lock); + + list_for_each_entry(bss, &dev->bss_list, list) { + if (channel && bss->pub.channel != channel) + continue; + if (is_mesh(&bss->pub, meshid, meshidlen, meshcfg)) { + res = bss; + kref_get(&res->ref); + break; + } + } + + spin_unlock_bh(&dev->bss_lock); + if (!res) + return NULL; + return &res->pub; +} +EXPORT_SYMBOL(cfg80211_get_mesh); + + +static void rb_insert_bss(struct cfg80211_registered_device *dev, + struct cfg80211_internal_bss *bss) +{ + struct rb_node **p = &dev->bss_tree.rb_node; + struct rb_node *parent = NULL; + struct cfg80211_internal_bss *tbss; + int cmp; + + while (*p) { + parent = *p; + tbss = rb_entry(parent, struct cfg80211_internal_bss, rbn); + + cmp = cmp_bss(&bss->pub, &tbss->pub); + + if (WARN_ON(!cmp)) { + /* will sort of leak this BSS */ + return; + } + + if (cmp < 0) + p = &(*p)->rb_left; + else + p = &(*p)->rb_right; + } + + rb_link_node(&bss->rbn, parent, p); + rb_insert_color(&bss->rbn, &dev->bss_tree); +} + +static struct cfg80211_internal_bss * +rb_find_bss(struct cfg80211_registered_device *dev, + struct cfg80211_internal_bss *res) +{ + struct rb_node *n = dev->bss_tree.rb_node; + struct cfg80211_internal_bss *bss; + int r; + + while (n) { + bss = rb_entry(n, struct cfg80211_internal_bss, rbn); + r = cmp_bss(&res->pub, &bss->pub); + + if (r == 0) + return bss; + else if (r < 0) + n = n->rb_left; + else + n = n->rb_right; + } + + return NULL; +} + +static struct cfg80211_internal_bss * +cfg80211_bss_update(struct cfg80211_registered_device *dev, + struct cfg80211_internal_bss *res, + bool overwrite) +{ + struct cfg80211_internal_bss *found = NULL; + const u8 *meshid, *meshcfg; + + /* + * The reference to "res" is donated to this function. + */ + + if (WARN_ON(!res->pub.channel)) { + kref_put(&res->ref, bss_release); + return NULL; + } + + res->ts = jiffies; + + if (is_zero_ether_addr(res->pub.bssid)) { + /* must be mesh, verify */ + meshid = find_ie(WLAN_EID_MESH_ID, res->pub.information_elements, + res->pub.len_information_elements); + meshcfg = find_ie(WLAN_EID_MESH_CONFIG, + res->pub.information_elements, + res->pub.len_information_elements); + if (!meshid || !meshcfg || + meshcfg[1] != IEEE80211_MESH_CONFIG_LEN) { + /* bogus mesh */ + kref_put(&res->ref, bss_release); + return NULL; + } + } + + spin_lock_bh(&dev->bss_lock); + + found = rb_find_bss(dev, res); + + if (found && overwrite) { + list_replace(&found->list, &res->list); + rb_replace_node(&found->rbn, &res->rbn, + &dev->bss_tree); + kref_put(&found->ref, bss_release); + found = res; + } else if (found) { + kref_get(&found->ref); + found->pub.beacon_interval = res->pub.beacon_interval; + found->pub.tsf = res->pub.tsf; + found->pub.signal = res->pub.signal; + found->pub.signal_type = res->pub.signal_type; + found->pub.capability = res->pub.capability; + found->ts = res->ts; + kref_put(&res->ref, bss_release); + } else { + /* this "consumes" the reference */ + list_add_tail(&res->list, &dev->bss_list); + rb_insert_bss(dev, res); + found = res; + } + + dev->bss_generation++; + spin_unlock_bh(&dev->bss_lock); + + kref_get(&found->ref); + return found; +} + +struct cfg80211_bss * +cfg80211_inform_bss_frame(struct wiphy *wiphy, + struct ieee80211_channel *channel, + struct ieee80211_mgmt *mgmt, size_t len, + s32 signal, enum cfg80211_signal_type sigtype, + gfp_t gfp) +{ + struct cfg80211_internal_bss *res; + size_t ielen = len - offsetof(struct ieee80211_mgmt, + u.probe_resp.variable); + bool overwrite; + size_t privsz = wiphy->bss_priv_size; + + if (WARN_ON(sigtype == NL80211_BSS_SIGNAL_UNSPEC && + (signal < 0 || signal > 100))) + return NULL; + + if (WARN_ON(!mgmt || !wiphy || + len < offsetof(struct ieee80211_mgmt, u.probe_resp.variable))) + return NULL; + + res = kzalloc(sizeof(*res) + privsz + ielen, gfp); + if (!res) + return NULL; + + memcpy(res->pub.bssid, mgmt->bssid, ETH_ALEN); + res->pub.channel = channel; + res->pub.signal_type = sigtype; + res->pub.signal = signal; + res->pub.tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp); + res->pub.beacon_interval = le16_to_cpu(mgmt->u.probe_resp.beacon_int); + res->pub.capability = le16_to_cpu(mgmt->u.probe_resp.capab_info); + /* point to after the private area */ + res->pub.information_elements = (u8 *)res + sizeof(*res) + privsz; + memcpy(res->pub.information_elements, mgmt->u.probe_resp.variable, ielen); + res->pub.len_information_elements = ielen; + + kref_init(&res->ref); + + overwrite = ieee80211_is_probe_resp(mgmt->frame_control); + + res = cfg80211_bss_update(wiphy_to_dev(wiphy), res, overwrite); + if (!res) + return NULL; + + /* cfg80211_bss_update gives us a referenced result */ + return &res->pub; +} +EXPORT_SYMBOL(cfg80211_inform_bss_frame); + +void cfg80211_put_bss(struct cfg80211_bss *pub) +{ + struct cfg80211_internal_bss *bss; + + if (!pub) + return; + + bss = container_of(pub, struct cfg80211_internal_bss, pub); + kref_put(&bss->ref, bss_release); +} +EXPORT_SYMBOL(cfg80211_put_bss); + +#ifdef CONFIG_WIRELESS_EXT +int cfg80211_wext_siwscan(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, char *extra) +{ + struct cfg80211_registered_device *rdev; + struct wiphy *wiphy; + struct iw_scan_req *wreq = NULL; + struct cfg80211_scan_request *creq; + int i, err, n_channels = 0; + enum ieee80211_band band; + + if (!netif_running(dev)) + return -ENETDOWN; + + rdev = cfg80211_get_dev_from_ifindex(dev->ifindex); + + if (IS_ERR(rdev)) + return PTR_ERR(rdev); + + if (rdev->scan_req) { + err = -EBUSY; + goto out; + } + + wiphy = &rdev->wiphy; + + for (band = 0; band < IEEE80211_NUM_BANDS; band++) + if (wiphy->bands[band]) + n_channels += wiphy->bands[band]->n_channels; + + creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) + + n_channels * sizeof(void *), + GFP_ATOMIC); + if (!creq) { + err = -ENOMEM; + goto out; + } + + creq->wiphy = wiphy; + creq->ifidx = dev->ifindex; + creq->ssids = (void *)(creq + 1); + creq->channels = (void *)(creq->ssids + 1); + creq->n_channels = n_channels; + creq->n_ssids = 1; + + /* all channels */ + i = 0; + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + int j; + if (!wiphy->bands[band]) + continue; + for (j = 0; j < wiphy->bands[band]->n_channels; j++) { + creq->channels[i] = &wiphy->bands[band]->channels[j]; + i++; + } + } + + /* translate scan request */ + if (wrqu->data.length == sizeof(struct iw_scan_req)) { + wreq = (struct iw_scan_req *)extra; + + if (wrqu->data.flags & IW_SCAN_THIS_ESSID) { + if (wreq->essid_len > IEEE80211_MAX_SSID_LEN) + return -EINVAL; + memcpy(creq->ssids[0].ssid, wreq->essid, wreq->essid_len); + creq->ssids[0].ssid_len = wreq->essid_len; + } + if (wreq->scan_type == IW_SCAN_TYPE_PASSIVE) + creq->n_ssids = 0; + } + + rdev->scan_req = creq; + err = rdev->ops->scan(wiphy, dev, creq); + if (err) { + rdev->scan_req = NULL; + kfree(creq); + } + out: + cfg80211_put_dev(rdev); + return err; +} +EXPORT_SYMBOL(cfg80211_wext_siwscan); + +static void ieee80211_scan_add_ies(struct iw_request_info *info, + struct cfg80211_bss *bss, + char **current_ev, char *end_buf) +{ + u8 *pos, *end, *next; + struct iw_event iwe; + + if (!bss->information_elements || + !bss->len_information_elements) + return; + + /* + * If needed, fragment the IEs buffer (at IE boundaries) into short + * enough fragments to fit into IW_GENERIC_IE_MAX octet messages. + */ + pos = bss->information_elements; + end = pos + bss->len_information_elements; + + while (end - pos > IW_GENERIC_IE_MAX) { + next = pos + 2 + pos[1]; + while (next + 2 + next[1] - pos < IW_GENERIC_IE_MAX) + next = next + 2 + next[1]; + + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = IWEVGENIE; + iwe.u.data.length = next - pos; + *current_ev = iwe_stream_add_point(info, *current_ev, + end_buf, &iwe, pos); + + pos = next; + } + + if (end > pos) { + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = IWEVGENIE; + iwe.u.data.length = end - pos; + *current_ev = iwe_stream_add_point(info, *current_ev, + end_buf, &iwe, pos); + } +} + + +static char * +ieee80211_bss(struct iw_request_info *info, + struct cfg80211_internal_bss *bss, + char *current_ev, char *end_buf) +{ + struct iw_event iwe; + u8 *buf, *cfg, *p; + u8 *ie = bss->pub.information_elements; + int rem = bss->pub.len_information_elements, i; + bool ismesh = false; + + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = SIOCGIWAP; + iwe.u.ap_addr.sa_family = ARPHRD_ETHER; + memcpy(iwe.u.ap_addr.sa_data, bss->pub.bssid, ETH_ALEN); + current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, + IW_EV_ADDR_LEN); + + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = SIOCGIWFREQ; + iwe.u.freq.m = ieee80211_frequency_to_channel(bss->pub.channel->center_freq); + iwe.u.freq.e = 0; + current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, + IW_EV_FREQ_LEN); + + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = SIOCGIWFREQ; + iwe.u.freq.m = bss->pub.channel->center_freq; + iwe.u.freq.e = 6; + current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, + IW_EV_FREQ_LEN); + + if (bss->pub.signal_type != CFG80211_SIGNAL_TYPE_NONE) { + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = IWEVQUAL; + iwe.u.qual.updated = IW_QUAL_LEVEL_UPDATED | + IW_QUAL_NOISE_INVALID | + IW_QUAL_QUAL_INVALID; + switch (bss->pub.signal_type) { + case CFG80211_SIGNAL_TYPE_MBM: + iwe.u.qual.level = bss->pub.signal / 100; + iwe.u.qual.updated |= IW_QUAL_DBM; + break; + case CFG80211_SIGNAL_TYPE_UNSPEC: + iwe.u.qual.level = bss->pub.signal; + break; + default: + /* not reached */ + break; + } + current_ev = iwe_stream_add_event(info, current_ev, end_buf, + &iwe, IW_EV_QUAL_LEN); + } + + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = SIOCGIWENCODE; + if (bss->pub.capability & WLAN_CAPABILITY_PRIVACY) + iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; + else + iwe.u.data.flags = IW_ENCODE_DISABLED; + iwe.u.data.length = 0; + current_ev = iwe_stream_add_point(info, current_ev, end_buf, + &iwe, ""); + + while (rem >= 2) { + /* invalid data */ + if (ie[1] > rem - 2) + break; + + switch (ie[0]) { + case WLAN_EID_SSID: + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = SIOCGIWESSID; + iwe.u.data.length = ie[1]; + iwe.u.data.flags = 1; + current_ev = iwe_stream_add_point(info, current_ev, end_buf, + &iwe, ie + 2); + break; + case WLAN_EID_MESH_ID: + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = SIOCGIWESSID; + iwe.u.data.length = ie[1]; + iwe.u.data.flags = 1; + current_ev = iwe_stream_add_point(info, current_ev, end_buf, + &iwe, ie + 2); + break; + case WLAN_EID_MESH_CONFIG: + ismesh = true; + if (ie[1] != IEEE80211_MESH_CONFIG_LEN) + break; + buf = kmalloc(50, GFP_ATOMIC); + if (!buf) + break; + cfg = ie + 2; + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = IWEVCUSTOM; + sprintf(buf, "Mesh network (version %d)", cfg[0]); + iwe.u.data.length = strlen(buf); + current_ev = iwe_stream_add_point(info, current_ev, + end_buf, + &iwe, buf); + sprintf(buf, "Path Selection Protocol ID: " + "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3], + cfg[4]); + iwe.u.data.length = strlen(buf); + current_ev = iwe_stream_add_point(info, current_ev, + end_buf, + &iwe, buf); + sprintf(buf, "Path Selection Metric ID: " + "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7], + cfg[8]); + iwe.u.data.length = strlen(buf); + current_ev = iwe_stream_add_point(info, current_ev, + end_buf, + &iwe, buf); + sprintf(buf, "Congestion Control Mode ID: " + "0x%02X%02X%02X%02X", cfg[9], cfg[10], + cfg[11], cfg[12]); + iwe.u.data.length = strlen(buf); + current_ev = iwe_stream_add_point(info, current_ev, + end_buf, + &iwe, buf); + sprintf(buf, "Channel Precedence: " + "0x%02X%02X%02X%02X", cfg[13], cfg[14], + cfg[15], cfg[16]); + iwe.u.data.length = strlen(buf); + current_ev = iwe_stream_add_point(info, current_ev, + end_buf, + &iwe, buf); + kfree(buf); + break; + case WLAN_EID_SUPP_RATES: + case WLAN_EID_EXT_SUPP_RATES: + /* display all supported rates in readable format */ + p = current_ev + iwe_stream_lcp_len(info); + + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = SIOCGIWRATE; + /* Those two flags are ignored... */ + iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0; + + for (i = 0; i < ie[1]; i++) { + iwe.u.bitrate.value = + ((ie[i + 2] & 0x7f) * 500000); + p = iwe_stream_add_value(info, current_ev, p, + end_buf, &iwe, IW_EV_PARAM_LEN); + } + current_ev = p; + break; + } + rem -= ie[1] + 2; + ie += ie[1] + 2; + } + + if (bss->pub.capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS) + || ismesh) { + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = SIOCGIWMODE; + if (ismesh) + iwe.u.mode = IW_MODE_MESH; + else if (bss->pub.capability & WLAN_CAPABILITY_ESS) + iwe.u.mode = IW_MODE_MASTER; + else + iwe.u.mode = IW_MODE_ADHOC; + current_ev = iwe_stream_add_event(info, current_ev, end_buf, + &iwe, IW_EV_UINT_LEN); + } + + buf = kmalloc(30, GFP_ATOMIC); + if (buf) { + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = IWEVCUSTOM; + sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->pub.tsf)); + iwe.u.data.length = strlen(buf); + current_ev = iwe_stream_add_point(info, current_ev, end_buf, + &iwe, buf); + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = IWEVCUSTOM; + sprintf(buf, " Last beacon: %dms ago", + jiffies_to_msecs(jiffies - bss->ts)); + iwe.u.data.length = strlen(buf); + current_ev = iwe_stream_add_point(info, current_ev, + end_buf, &iwe, buf); + kfree(buf); + } + + ieee80211_scan_add_ies(info, &bss->pub, ¤t_ev, end_buf); + + return current_ev; +} + + +static int ieee80211_scan_results(struct cfg80211_registered_device *dev, + struct iw_request_info *info, + char *buf, size_t len) +{ + char *current_ev = buf; + char *end_buf = buf + len; + struct cfg80211_internal_bss *bss; + + spin_lock_bh(&dev->bss_lock); + cfg80211_bss_expire(dev); + + list_for_each_entry(bss, &dev->bss_list, list) { + if (buf + len - current_ev <= IW_EV_ADDR_LEN) { + spin_unlock_bh(&dev->bss_lock); + return -E2BIG; + } + current_ev = ieee80211_bss(info, bss, + current_ev, end_buf); + } + spin_unlock_bh(&dev->bss_lock); + return current_ev - buf; +} + + +int cfg80211_wext_giwscan(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *data, char *extra) +{ + struct cfg80211_registered_device *rdev; + int res; + + if (!netif_running(dev)) + return -ENETDOWN; + + rdev = cfg80211_get_dev_from_ifindex(dev->ifindex); + + if (IS_ERR(rdev)) + return PTR_ERR(rdev); + + if (rdev->scan_req) { + res = -EAGAIN; + goto out; + } + + res = ieee80211_scan_results(rdev, info, extra, data->length); + data->length = 0; + if (res >= 0) { + data->length = res; + res = 0; + } + + out: + cfg80211_put_dev(rdev); + return res; +} +EXPORT_SYMBOL(cfg80211_wext_giwscan); +#endif -- cgit v1.2.3-70-g09d2 From 78c1c7e109f1f14e7c18f290c4ebc58da220c7ba Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 10 Feb 2009 21:25:57 +0100 Subject: cfg80211: free_priv for BSS info When cfg80211 users have their own allocated data in the per-BSS private data, they will need to free this when the BSS struct is destroyed. Add a free_priv method and fix one place where the BSS was kfree'd rather than released properly. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 2 ++ net/wireless/core.c | 2 +- net/wireless/scan.c | 2 ++ 3 files changed, 5 insertions(+), 1 deletion(-) (limited to 'include/net/cfg80211.h') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 09a0b268e5c..b514abcc2b9 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -567,6 +567,7 @@ enum cfg80211_signal_type { * @len_information_elements: total length of the information elements * @signal: signal strength value * @signal_type: signal type + * @free_priv: function pointer to free private data * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes */ struct cfg80211_bss { @@ -582,6 +583,7 @@ struct cfg80211_bss { s32 signal; enum cfg80211_signal_type signal_type; + void (*free_priv)(struct cfg80211_bss *bss); u8 priv[0] __attribute__((__aligned__(sizeof(void *)))); }; diff --git a/net/wireless/core.c b/net/wireless/core.c index 3cccd1390ce..0668b2bfc1d 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -376,7 +376,7 @@ void cfg80211_dev_free(struct cfg80211_registered_device *drv) mutex_destroy(&drv->mtx); mutex_destroy(&drv->devlist_mtx); list_for_each_entry_safe(scan, tmp, &drv->bss_list, list) - kfree(scan); + cfg80211_put_bss(&scan->pub); kfree(drv); } diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 009d12810c5..ec148f68a62 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -56,6 +56,8 @@ static void bss_release(struct kref *ref) struct cfg80211_internal_bss *bss; bss = container_of(ref, struct cfg80211_internal_bss, ref); + if (bss->pub.free_priv) + bss->pub.free_priv(&bss->pub); kfree(bss); } -- cgit v1.2.3-70-g09d2 From d491af19db3adcc1eb1653e60a427fb4df36f361 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 10 Feb 2009 21:25:58 +0100 Subject: cfg80211: allow users to request removing a BSS This patch introduces cfg80211_unlink_bss, a function to allow a driver to remove a BSS from the internal list and make it not show up in scan results any more -- this is to be used when the driver detects that the BSS is no longer available. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 11 +++++++++++ net/wireless/scan.c | 21 +++++++++++++++++++++ 2 files changed, 32 insertions(+) (limited to 'include/net/cfg80211.h') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index b514abcc2b9..f1d21570e6c 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -791,5 +791,16 @@ struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, const u8 *meshid, size_t meshidlen, const u8 *meshcfg); void cfg80211_put_bss(struct cfg80211_bss *bss); +/** + * cfg80211_unlink_bss - unlink BSS from internal data structures + * @wiphy: the wiphy + * @bss: the bss to remove + * + * This function removes the given BSS from the internal data structures + * thereby making it no longer show up in scan results etc. Use this + * function when you detect a BSS is gone. Normally BSSes will also time + * out, so it is not necessary to use this function at all. + */ +void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); #endif /* __NET_CFG80211_H */ diff --git a/net/wireless/scan.c b/net/wireless/scan.c index ec148f68a62..aacccc9ab6c 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -432,6 +432,27 @@ void cfg80211_put_bss(struct cfg80211_bss *pub) } EXPORT_SYMBOL(cfg80211_put_bss); +void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *pub) +{ + struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy); + struct cfg80211_internal_bss *bss; + + if (WARN_ON(!pub)) + return; + + bss = container_of(pub, struct cfg80211_internal_bss, pub); + + spin_lock_bh(&dev->bss_lock); + + list_del(&bss->list); + rb_erase(&bss->rbn, &dev->bss_tree); + + spin_unlock_bh(&dev->bss_lock); + + kref_put(&bss->ref, bss_release); +} +EXPORT_SYMBOL(cfg80211_unlink_bss); + #ifdef CONFIG_WIRELESS_EXT int cfg80211_wext_siwscan(struct net_device *dev, struct iw_request_info *info, -- cgit v1.2.3-70-g09d2 From 79420f09e76e8e1dd1149d6ce9c20e06cbb5802a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 10 Feb 2009 21:25:59 +0100 Subject: cfg80211: add more flexible BSS lookup Add a more flexible BSS lookup function so that mac80211 or other drivers can actually use this for getting the BSS to connect to. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 12 +++++++++++- net/wireless/scan.c | 10 ++++++++-- 2 files changed, 19 insertions(+), 3 deletions(-) (limited to 'include/net/cfg80211.h') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index f1d21570e6c..c0d1f5b708c 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -785,7 +785,17 @@ cfg80211_inform_bss_frame(struct wiphy *wiphy, struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, struct ieee80211_channel *channel, const u8 *bssid, - const u8 *ssid, size_t ssid_len); + const u8 *ssid, size_t ssid_len, + u16 capa_mask, u16 capa_val); +static inline struct cfg80211_bss * +cfg80211_get_ibss(struct wiphy *wiphy, + struct ieee80211_channel *channel, + const u8 *ssid, size_t ssid_len) +{ + return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, + WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); +} + struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, struct ieee80211_channel *channel, const u8 *meshid, size_t meshidlen, diff --git a/net/wireless/scan.c b/net/wireless/scan.c index aacccc9ab6c..b1893c863b9 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -116,9 +116,12 @@ static bool is_bss(struct cfg80211_bss *a, { const u8 *ssidie; - if (compare_ether_addr(a->bssid, bssid)) + if (bssid && compare_ether_addr(a->bssid, bssid)) return false; + if (!ssid) + return true; + ssidie = find_ie(WLAN_EID_SSID, a->information_elements, a->len_information_elements); @@ -199,7 +202,8 @@ static int cmp_bss(struct cfg80211_bss *a, struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, struct ieee80211_channel *channel, const u8 *bssid, - const u8 *ssid, size_t ssid_len) + const u8 *ssid, size_t ssid_len, + u16 capa_mask, u16 capa_val) { struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy); struct cfg80211_internal_bss *bss, *res = NULL; @@ -207,6 +211,8 @@ struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, spin_lock_bh(&dev->bss_lock); list_for_each_entry(bss, &dev->bss_list, list) { + if ((bss->pub.capability & capa_mask) != capa_val) + continue; if (channel && bss->pub.channel != channel) continue; if (is_bss(&bss->pub, bssid, ssid, ssid_len)) { -- cgit v1.2.3-70-g09d2 From 70692ad2923a379e0a10f9ec2ad93fbbe084cc46 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Mon, 16 Feb 2009 19:39:13 +0200 Subject: nl80211: Optional IEs into scan request This extends the NL80211_CMD_TRIGGER_SCAN command to allow applications to specify a set of information element(s) to be added into Probe Request frames with NL80211_ATTR_IE. This provides support for the MLME-SCAN.request primitive parameter VendorSpecificInfo and can be used, e.g., to implement WPS scanning. Signed-off-by: Jouni Malinen Acked-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 4 ++++ net/mac80211/ieee80211_i.h | 3 ++- net/mac80211/mlme.c | 8 +++++--- net/mac80211/scan.c | 3 ++- net/mac80211/util.c | 7 +++++-- net/wireless/nl80211.c | 21 ++++++++++++++++++++- 6 files changed, 38 insertions(+), 8 deletions(-) (limited to 'include/net/cfg80211.h') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index c0d1f5b708c..33f43b0d08f 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -525,6 +525,8 @@ struct cfg80211_ssid { * @n_ssids: number of SSIDs * @channels: channels to scan on. * @n_channels: number of channels for each band + * @ie: optional information element(s) to add into Probe Request or %NULL + * @ie_len: length of ie in octets * @wiphy: the wiphy this was for * @ifidx: the interface index */ @@ -533,6 +535,8 @@ struct cfg80211_scan_request { int n_ssids; struct ieee80211_channel **channels; u32 n_channels; + u8 *ie; + size_t ie_len; /* internal */ struct wiphy *wiphy; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 27d56414019..d06c75720ce 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1093,7 +1093,8 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, u8 *extra, size_t extra_len, const u8 *bssid, int encrypt); void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, - u8 *ssid, size_t ssid_len); + u8 *ssid, size_t ssid_len, + u8 *ie, size_t ie_len); void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, const size_t supp_rates_len, diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index ec5a0900cba..5a4977936f6 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -716,7 +716,7 @@ static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata) * will not answer to direct packet in unassociated state. */ ieee80211_send_probe_req(sdata, NULL, - ifmgd->ssid, ifmgd->ssid_len); + ifmgd->ssid, ifmgd->ssid_len, NULL, 0); mod_timer(&ifmgd->timer, jiffies + IEEE80211_AUTH_TIMEOUT); } @@ -946,7 +946,8 @@ static void ieee80211_associated(struct ieee80211_sub_if_data *sdata) } else ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid, - ifmgd->ssid_len); + ifmgd->ssid_len, + NULL, 0); ifmgd->flags ^= IEEE80211_STA_PROBEREQ_POLL; } else { ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL; @@ -955,7 +956,8 @@ static void ieee80211_associated(struct ieee80211_sub_if_data *sdata) ifmgd->last_probe = jiffies; ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid, - ifmgd->ssid_len); + ifmgd->ssid_len, + NULL, 0); } } } diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index 08a1fc27ca1..c063f820426 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -338,7 +338,8 @@ void ieee80211_scan_work(struct work_struct *work) ieee80211_send_probe_req( sdata, NULL, local->scan_req->ssids[i].ssid, - local->scan_req->ssids[i].ssid_len); + local->scan_req->ssids[i].ssid_len, + local->scan_req->ie, local->scan_req->ie_len); next_delay = IEEE80211_CHANNEL_TIME; break; } diff --git a/net/mac80211/util.c b/net/mac80211/util.c index dee17e5cbb8..e0431a1d218 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -884,7 +884,8 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, } void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, - u8 *ssid, size_t ssid_len) + u8 *ssid, size_t ssid_len, + u8 *ie, size_t ie_len) { struct ieee80211_local *local = sdata->local; struct ieee80211_supported_band *sband; @@ -903,7 +904,7 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, } skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 + - extra_preq_ie_len); + ie_len + extra_preq_ie_len); if (!skb) { printk(KERN_DEBUG "%s: failed to allocate buffer for probe " "request\n", sdata->dev->name); @@ -950,6 +951,8 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, *pos = rate->bitrate / 5; } + if (ie) + memcpy(skb_put(skb, ie_len), ie, ie_len); if (extra_preq_ie) memcpy(skb_put(skb, extra_preq_ie_len), extra_preq_ie, extra_preq_ie_len); diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 298a4de5994..67b18b3a93a 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -2286,6 +2286,7 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) struct wiphy *wiphy; int err, tmp, n_ssids = 0, n_channels = 0, i; enum ieee80211_band band; + size_t ie_len; err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); if (err) @@ -2327,9 +2328,15 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) goto out_unlock; } + if (info->attrs[NL80211_ATTR_IE]) + ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); + else + ie_len = 0; + request = kzalloc(sizeof(*request) + sizeof(*ssid) * n_ssids - + sizeof(channel) * n_channels, GFP_KERNEL); + + sizeof(channel) * n_channels + + ie_len, GFP_KERNEL); if (!request) { err = -ENOMEM; goto out_unlock; @@ -2340,6 +2347,12 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) if (n_ssids) request->ssids = (void *)(request->channels + n_channels); request->n_ssids = n_ssids; + if (ie_len) { + if (request->ssids) + request->ie = (void *)(request->ssids + n_ssids); + else + request->ie = (void *)(request->channels + n_channels); + } if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { /* user specified, bail out if channel not found */ @@ -2380,6 +2393,12 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) } } + if (info->attrs[NL80211_ATTR_IE]) { + request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); + memcpy(request->ie, nla_data(info->attrs[NL80211_ATTR_IE]), + request->ie_len); + } + request->ifidx = dev->ifindex; request->wiphy = &drv->wiphy; -- cgit v1.2.3-70-g09d2 From 98c8a60a04316e94ccea8221cf16768ce91bd214 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Tue, 17 Feb 2009 13:24:57 +0200 Subject: nl80211: Provide access to STA TX/RX packet counters The TX/RX packet counters are needed to fill in RADIUS Accounting attributes Acct-Output-Packets and Acct-Input-Packets. We already collect the needed information, but only the TX/RX bytes were previously exposed through nl80211. Allow applications to fetch the packet counters, too, to provide more complete support for accounting. Signed-off-by: Jouni Malinen Acked-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 5 +++++ include/net/cfg80211.h | 8 ++++++++ net/mac80211/cfg.c | 4 ++++ net/wireless/nl80211.c | 6 ++++++ 4 files changed, 23 insertions(+) (limited to 'include/net/cfg80211.h') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 8802d1bda38..f6e56370ea6 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -526,6 +526,9 @@ enum nl80211_rate_info { * @NL80211_STA_INFO_SIGNAL: signal strength of last received PPDU (u8, dBm) * @NL80211_STA_INFO_TX_BITRATE: current unicast tx rate, nested attribute * containing info as possible, see &enum nl80211_sta_info_txrate. + * @NL80211_STA_INFO_RX_PACKETS: total received packet (u32, from this station) + * @NL80211_STA_INFO_TX_PACKETS: total transmitted packets (u32, to this + * station) */ enum nl80211_sta_info { __NL80211_STA_INFO_INVALID, @@ -537,6 +540,8 @@ enum nl80211_sta_info { NL80211_STA_INFO_PLINK_STATE, NL80211_STA_INFO_SIGNAL, NL80211_STA_INFO_TX_BITRATE, + NL80211_STA_INFO_RX_PACKETS, + NL80211_STA_INFO_TX_PACKETS, /* keep last */ __NL80211_STA_INFO_AFTER_LAST, diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 33f43b0d08f..8dcc4644403 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -178,6 +178,8 @@ struct station_parameters { * @STATION_INFO_SIGNAL: @signal filled * @STATION_INFO_TX_BITRATE: @tx_bitrate fields are filled * (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs) + * @STATION_INFO_RX_PACKETS: @rx_packets filled + * @STATION_INFO_TX_PACKETS: @tx_packets filled */ enum station_info_flags { STATION_INFO_INACTIVE_TIME = 1<<0, @@ -188,6 +190,8 @@ enum station_info_flags { STATION_INFO_PLINK_STATE = 1<<5, STATION_INFO_SIGNAL = 1<<6, STATION_INFO_TX_BITRATE = 1<<7, + STATION_INFO_RX_PACKETS = 1<<8, + STATION_INFO_TX_PACKETS = 1<<9, }; /** @@ -235,6 +239,8 @@ struct rate_info { * @plink_state: mesh peer link state * @signal: signal strength of last received packet in dBm * @txrate: current unicast bitrate to this station + * @rx_packets: packets received from this station + * @tx_packets: packets transmitted to this station */ struct station_info { u32 filled; @@ -246,6 +252,8 @@ struct station_info { u8 plink_state; s8 signal; struct rate_info txrate; + u32 rx_packets; + u32 tx_packets; }; /** diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index f453bb7c564..c43129efc3b 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -341,11 +341,15 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) sinfo->filled = STATION_INFO_INACTIVE_TIME | STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES | + STATION_INFO_RX_PACKETS | + STATION_INFO_TX_PACKETS | STATION_INFO_TX_BITRATE; sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); sinfo->rx_bytes = sta->rx_bytes; sinfo->tx_bytes = sta->tx_bytes; + sinfo->rx_packets = sta->rx_packets; + sinfo->tx_packets = sta->tx_packets; if (sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) { sinfo->filled |= STATION_INFO_SIGNAL; diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 67b18b3a93a..badccf98074 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -1206,6 +1206,12 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, nla_nest_end(msg, txrate); } + if (sinfo->filled & STATION_INFO_RX_PACKETS) + NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS, + sinfo->rx_packets); + if (sinfo->filled & STATION_INFO_TX_PACKETS) + NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS, + sinfo->tx_packets); nla_nest_end(msg, sinfoattr); return genlmsg_end(msg, hdr); -- cgit v1.2.3-70-g09d2 From 77965c970d7da9c9b6349ff2b1d9adecf54c403b Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 18 Feb 2009 18:45:06 +0100 Subject: cfg80211: clean up signal type It wasn't a good idea to make the signal type a per-BSS option, although then it is closer to the actual value. Move it to be a per-wiphy setting, update mac80211 to match. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 8 +++----- include/net/wireless.h | 3 +++ net/mac80211/main.c | 5 +++++ net/mac80211/scan.c | 11 +++-------- net/wireless/nl80211.c | 2 +- net/wireless/scan.c | 21 +++++++++------------ 6 files changed, 24 insertions(+), 26 deletions(-) (limited to 'include/net/cfg80211.h') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 8dcc4644403..e0312746a8c 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -577,8 +577,7 @@ enum cfg80211_signal_type { * @information_elements: the information elements (Note that there * is no guarantee that these are well-formed!) * @len_information_elements: total length of the information elements - * @signal: signal strength value - * @signal_type: signal type + * @signal: signal strength value (type depends on the wiphy's signal_type) * @free_priv: function pointer to free private data * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes */ @@ -593,7 +592,6 @@ struct cfg80211_bss { size_t len_information_elements; s32 signal; - enum cfg80211_signal_type signal_type; void (*free_priv)(struct cfg80211_bss *bss); u8 priv[0] __attribute__((__aligned__(sizeof(void *)))); @@ -782,6 +780,7 @@ void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); * * @wiphy: the wiphy reporting the BSS * @bss: the found BSS + * @signal: the signal strength, type depends on the wiphy's signal_type * @gfp: context flags * * This informs cfg80211 that BSS information was found and @@ -791,8 +790,7 @@ struct cfg80211_bss* cfg80211_inform_bss_frame(struct wiphy *wiphy, struct ieee80211_channel *channel, struct ieee80211_mgmt *mgmt, size_t len, - s32 signal, enum cfg80211_signal_type sigtype, - gfp_t gfp); + s32 signal, gfp_t gfp); struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, struct ieee80211_channel *channel, diff --git a/include/net/wireless.h b/include/net/wireless.h index 1c6285eb166..d815aa8b453 100644 --- a/include/net/wireless.h +++ b/include/net/wireless.h @@ -200,6 +200,7 @@ struct ieee80211_supported_band { * the regulatory_hint() API. This can be used by the driver * on the reg_notifier() if it chooses to ignore future * regulatory domain changes caused by other drivers. + * @signal_type: signal type reported in &struct cfg80211_bss. */ struct wiphy { /* assign these fields before you register the wiphy */ @@ -213,6 +214,8 @@ struct wiphy { bool custom_regulatory; bool strict_regulatory; + enum cfg80211_signal_type signal_type; + int bss_priv_size; u8 max_scan_ssids; diff --git a/net/mac80211/main.c b/net/mac80211/main.c index fce9d08986e..f38db4d37e5 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -861,6 +861,11 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) /* mac80211 always supports monitor */ local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); + if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) + local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; + else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) + local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; + result = wiphy_register(local->hw.wiphy); if (result < 0) goto fail_wiphy_register; diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index c063f820426..23f4de27474 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -63,20 +63,15 @@ ieee80211_bss_info_update(struct ieee80211_local *local, { struct ieee80211_bss *bss; int clen; - enum cfg80211_signal_type sigtype = CFG80211_SIGNAL_TYPE_NONE; s32 signal = 0; - if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) { - sigtype = CFG80211_SIGNAL_TYPE_MBM; + if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) signal = rx_status->signal * 100; - } else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) { - sigtype = CFG80211_SIGNAL_TYPE_UNSPEC; + else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) signal = (rx_status->signal * 100) / local->hw.max_signal; - } bss = (void *)cfg80211_inform_bss_frame(local->hw.wiphy, channel, - mgmt, len, signal, sigtype, - GFP_ATOMIC); + mgmt, len, signal, GFP_ATOMIC); if (!bss) return NULL; diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 245fddcc77c..a7e751edc73 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -2457,7 +2457,7 @@ static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags, NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability); NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq); - switch (res->signal_type) { + switch (rdev->wiphy.signal_type) { case CFG80211_SIGNAL_TYPE_MBM: NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal); break; diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 01c136d98c5..60600657b65 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -370,7 +370,6 @@ cfg80211_bss_update(struct cfg80211_registered_device *dev, found->pub.beacon_interval = res->pub.beacon_interval; found->pub.tsf = res->pub.tsf; found->pub.signal = res->pub.signal; - found->pub.signal_type = res->pub.signal_type; found->pub.capability = res->pub.capability; found->ts = res->ts; kref_put(&res->ref, bss_release); @@ -392,8 +391,7 @@ struct cfg80211_bss * cfg80211_inform_bss_frame(struct wiphy *wiphy, struct ieee80211_channel *channel, struct ieee80211_mgmt *mgmt, size_t len, - s32 signal, enum cfg80211_signal_type sigtype, - gfp_t gfp) + s32 signal, gfp_t gfp) { struct cfg80211_internal_bss *res; size_t ielen = len - offsetof(struct ieee80211_mgmt, @@ -401,7 +399,7 @@ cfg80211_inform_bss_frame(struct wiphy *wiphy, bool overwrite; size_t privsz = wiphy->bss_priv_size; - if (WARN_ON(sigtype == NL80211_BSS_SIGNAL_UNSPEC && + if (WARN_ON(wiphy->signal_type == NL80211_BSS_SIGNAL_UNSPEC && (signal < 0 || signal > 100))) return NULL; @@ -415,7 +413,6 @@ cfg80211_inform_bss_frame(struct wiphy *wiphy, memcpy(res->pub.bssid, mgmt->bssid, ETH_ALEN); res->pub.channel = channel; - res->pub.signal_type = sigtype; res->pub.signal = signal; res->pub.tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp); res->pub.beacon_interval = le16_to_cpu(mgmt->u.probe_resp.beacon_int); @@ -607,9 +604,9 @@ static inline unsigned int elapsed_jiffies_msecs(unsigned long start) } static char * -ieee80211_bss(struct iw_request_info *info, - struct cfg80211_internal_bss *bss, - char *current_ev, char *end_buf) +ieee80211_bss(struct wiphy *wiphy, struct iw_request_info *info, + struct cfg80211_internal_bss *bss, char *current_ev, + char *end_buf) { struct iw_event iwe; u8 *buf, *cfg, *p; @@ -638,13 +635,13 @@ ieee80211_bss(struct iw_request_info *info, current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, IW_EV_FREQ_LEN); - if (bss->pub.signal_type != CFG80211_SIGNAL_TYPE_NONE) { + if (wiphy->signal_type != CFG80211_SIGNAL_TYPE_NONE) { memset(&iwe, 0, sizeof(iwe)); iwe.cmd = IWEVQUAL; iwe.u.qual.updated = IW_QUAL_LEVEL_UPDATED | IW_QUAL_NOISE_INVALID | IW_QUAL_QUAL_UPDATED; - switch (bss->pub.signal_type) { + switch (wiphy->signal_type) { case CFG80211_SIGNAL_TYPE_MBM: sig = bss->pub.signal / 100; iwe.u.qual.level = sig; @@ -823,8 +820,8 @@ static int ieee80211_scan_results(struct cfg80211_registered_device *dev, spin_unlock_bh(&dev->bss_lock); return -E2BIG; } - current_ev = ieee80211_bss(info, bss, - current_ev, end_buf); + current_ev = ieee80211_bss(&dev->wiphy, info, bss, + current_ev, end_buf); } spin_unlock_bh(&dev->bss_lock); return current_ev - buf; -- cgit v1.2.3-70-g09d2 From 4aa188e1a868d25c5b93e48e5d29bbd0f9d3bc3a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 18 Feb 2009 19:32:08 +0100 Subject: mac80211/cfg80211: move iwrange handler to cfg80211 The previous patch made cfg80211 generally aware of the signal type a given hardware will give, so now it can implement SIOCGIWRANGE itself, removing more wext stuff from mac80211. Might need to be a little more parametrized once we have more hardware using cfg80211 and new hardware capabilities. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 3 + net/mac80211/wext.c | 135 ++++++--------------------------------------- net/wireless/wext-compat.c | 97 ++++++++++++++++++++++++++++++++ 3 files changed, 116 insertions(+), 119 deletions(-) (limited to 'include/net/cfg80211.h') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index e0312746a8c..43ac90df416 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -765,6 +765,9 @@ int cfg80211_wext_siwscan(struct net_device *dev, int cfg80211_wext_giwscan(struct net_device *dev, struct iw_request_info *info, struct iw_point *data, char *extra); +int cfg80211_wext_giwrange(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *data, char *extra); /** * cfg80211_scan_done - notify that scan finished diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c index a8d4b617191..f6924fc065d 100644 --- a/net/mac80211/wext.c +++ b/net/mac80211/wext.c @@ -144,124 +144,6 @@ static int ieee80211_ioctl_siwgenie(struct net_device *dev, return -EOPNOTSUPP; } -static u8 ieee80211_get_wstats_flags(struct ieee80211_local *local) -{ - u8 wstats_flags = 0; - - wstats_flags |= local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC | - IEEE80211_HW_SIGNAL_DBM) ? - IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; - wstats_flags |= local->hw.flags & IEEE80211_HW_NOISE_DBM ? - IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; - if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) - wstats_flags |= IW_QUAL_DBM; - - return wstats_flags; -} - -static int ieee80211_ioctl_giwrange(struct net_device *dev, - struct iw_request_info *info, - struct iw_point *data, char *extra) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct iw_range *range = (struct iw_range *) extra; - enum ieee80211_band band; - int c = 0; - - data->length = sizeof(struct iw_range); - memset(range, 0, sizeof(struct iw_range)); - - range->we_version_compiled = WIRELESS_EXT; - range->we_version_source = 21; - range->retry_capa = IW_RETRY_LIMIT; - range->retry_flags = IW_RETRY_LIMIT; - range->min_retry = 0; - range->max_retry = 255; - range->min_rts = 0; - range->max_rts = 2347; - range->min_frag = 256; - range->max_frag = 2346; - - range->encoding_size[0] = 5; - range->encoding_size[1] = 13; - range->num_encoding_sizes = 2; - range->max_encoding_tokens = NUM_DEFAULT_KEYS; - - /* cfg80211 requires this, and enforces 0..100 */ - if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) - range->max_qual.level = 100; - else if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) - range->max_qual.level = -110; - else - range->max_qual.level = 0; - - if (local->hw.flags & IEEE80211_HW_NOISE_DBM) - range->max_qual.noise = -110; - else - range->max_qual.noise = 0; - - range->max_qual.updated = ieee80211_get_wstats_flags(local); - - if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) { - /* - * cfg80211 assumes -110 to -40 dBm and clamps to that range - * for qual.qual, so tell userspace this is what we give it - * but take into account that we have to start from 0. - */ - range->max_qual.qual = 70; - range->avg_qual.qual = 35; - } else { - /* - * cfg80211 just uses the level value for qual too, and it - * requires the level value to be 0 .. 100. - */ - range->max_qual.qual = 100; - range->avg_qual.qual = 50; - } - /* not always true but better than nothing */ - range->avg_qual.level = range->max_qual.level / 2; - range->avg_qual.noise = range->max_qual.noise / 2; - range->avg_qual.updated = ieee80211_get_wstats_flags(local); - - range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 | - IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP; - - - for (band = 0; band < IEEE80211_NUM_BANDS; band ++) { - int i; - struct ieee80211_supported_band *sband; - - sband = local->hw.wiphy->bands[band]; - - if (!sband) - continue; - - for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) { - struct ieee80211_channel *chan = &sband->channels[i]; - - if (!(chan->flags & IEEE80211_CHAN_DISABLED)) { - range->freq[c].i = - ieee80211_frequency_to_channel( - chan->center_freq); - range->freq[c].m = chan->center_freq; - range->freq[c].e = 6; - c++; - } - } - } - range->num_channels = c; - range->num_frequency = c; - - IW_EVENT_CAPA_SET_KERNEL(range->event_capa); - IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP); - IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN); - - range->scan_capa |= IW_SCAN_CAPA_ESSID; - - return 0; -} - - static int ieee80211_ioctl_siwfreq(struct net_device *dev, struct iw_request_info *info, struct iw_freq *freq, char *extra) @@ -1004,6 +886,21 @@ static int ieee80211_ioctl_siwauth(struct net_device *dev, return ret; } +static u8 ieee80211_get_wstats_flags(struct ieee80211_local *local) +{ + u8 wstats_flags = 0; + + wstats_flags |= local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC | + IEEE80211_HW_SIGNAL_DBM) ? + IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; + wstats_flags |= local->hw.flags & IEEE80211_HW_NOISE_DBM ? + IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; + if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) + wstats_flags |= IW_QUAL_DBM; + + return wstats_flags; +} + /* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */ static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev) { @@ -1149,7 +1046,7 @@ static const iw_handler ieee80211_handler[] = (iw_handler) NULL, /* SIOCSIWSENS */ (iw_handler) NULL, /* SIOCGIWSENS */ (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */ - (iw_handler) ieee80211_ioctl_giwrange, /* SIOCGIWRANGE */ + (iw_handler) cfg80211_wext_giwrange, /* SIOCGIWRANGE */ (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */ (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */ (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */ diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index 58e489fd4ae..b84a9b4fe96 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -137,3 +137,100 @@ int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, return 0; } EXPORT_SYMBOL(cfg80211_wext_giwmode); + + +int cfg80211_wext_giwrange(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *data, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct iw_range *range = (struct iw_range *) extra; + enum ieee80211_band band; + int c = 0; + + if (!wdev) + return -EOPNOTSUPP; + + data->length = sizeof(struct iw_range); + memset(range, 0, sizeof(struct iw_range)); + + range->we_version_compiled = WIRELESS_EXT; + range->we_version_source = 21; + range->retry_capa = IW_RETRY_LIMIT; + range->retry_flags = IW_RETRY_LIMIT; + range->min_retry = 0; + range->max_retry = 255; + range->min_rts = 0; + range->max_rts = 2347; + range->min_frag = 256; + range->max_frag = 2346; + + range->encoding_size[0] = 5; + range->encoding_size[1] = 13; + range->num_encoding_sizes = 2; + range->max_encoding_tokens = 4; + + range->max_qual.updated = IW_QUAL_NOISE_INVALID; + + switch (wdev->wiphy->signal_type) { + case CFG80211_SIGNAL_TYPE_NONE: + break; + case CFG80211_SIGNAL_TYPE_MBM: + range->max_qual.level = -110; + range->max_qual.qual = 70; + range->avg_qual.qual = 35; + range->max_qual.updated |= IW_QUAL_DBM; + range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; + range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; + break; + case CFG80211_SIGNAL_TYPE_UNSPEC: + range->max_qual.level = 100; + range->max_qual.qual = 100; + range->avg_qual.qual = 50; + range->max_qual.updated |= IW_QUAL_QUAL_UPDATED; + range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED; + break; + } + + range->avg_qual.level = range->max_qual.level / 2; + range->avg_qual.noise = range->max_qual.noise / 2; + range->avg_qual.updated = range->max_qual.updated; + + range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 | + IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP; + + + for (band = 0; band < IEEE80211_NUM_BANDS; band ++) { + int i; + struct ieee80211_supported_band *sband; + + sband = wdev->wiphy->bands[band]; + + if (!sband) + continue; + + for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) { + struct ieee80211_channel *chan = &sband->channels[i]; + + if (!(chan->flags & IEEE80211_CHAN_DISABLED)) { + range->freq[c].i = + ieee80211_frequency_to_channel( + chan->center_freq); + range->freq[c].m = chan->center_freq; + range->freq[c].e = 6; + c++; + } + } + } + range->num_channels = c; + range->num_frequency = c; + + IW_EVENT_CAPA_SET_KERNEL(range->event_capa); + IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP); + IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN); + + range->scan_capa |= IW_SCAN_CAPA_ESSID; + + return 0; +} +EXPORT_SYMBOL(cfg80211_wext_giwrange); -- cgit v1.2.3-70-g09d2 From 806a9e39670be4f1f861c346ec102a79e81b90c3 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Sat, 21 Feb 2009 00:04:26 -0500 Subject: cfg80211: make regulatory_request use wiphy_idx instead of wiphy We do this so later on we can move the pending requests onto a workqueue. By using the wiphy_idx instead of the wiphy we can later easily check if the wiphy has disappeared or not. Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- include/net/cfg80211.h | 6 ++--- net/wireless/core.c | 30 ++++++++++++++++++++--- net/wireless/core.h | 12 ++++++++++ net/wireless/reg.c | 64 +++++++++++++++++++++++++++++++------------------- 4 files changed, 82 insertions(+), 30 deletions(-) (limited to 'include/net/cfg80211.h') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 43ac90df416..bb9129fc61c 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -383,9 +383,9 @@ enum environment_cap { }; /** - * struct regulatory_request - receipt of last regulatory request + * struct regulatory_request - used to keep track of regulatory requests * - * @wiphy: this is set if this request's initiator is + * @wiphy_idx: this is set if this request's initiator is * %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This * can be used by the wireless core to deal with conflicts * and potentially inform users of which devices specifically @@ -406,7 +406,7 @@ enum environment_cap { * indoor, or if it doesn't matter */ struct regulatory_request { - struct wiphy *wiphy; + int wiphy_idx; enum reg_set_by initiator; char alpha2[2]; bool intersect; diff --git a/net/wireless/core.c b/net/wireless/core.c index e347093ccc7..b1a354b7fc0 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -40,9 +40,8 @@ DEFINE_MUTEX(cfg80211_mutex); /* for debugfs */ static struct dentry *ieee80211_debugfs_dir; -/* requires cfg80211_drv_mutex to be held! */ -static struct cfg80211_registered_device * -cfg80211_drv_by_wiphy_idx(int wiphy_idx) +/* requires cfg80211_mutex to be held! */ +struct cfg80211_registered_device *cfg80211_drv_by_wiphy_idx(int wiphy_idx) { struct cfg80211_registered_device *result = NULL, *drv; @@ -61,6 +60,31 @@ cfg80211_drv_by_wiphy_idx(int wiphy_idx) return result; } +int get_wiphy_idx(struct wiphy *wiphy) +{ + struct cfg80211_registered_device *drv; + if (!wiphy) + return WIPHY_IDX_STALE; + drv = wiphy_to_dev(wiphy); + return drv->wiphy_idx; +} + +/* requires cfg80211_drv_mutex to be held! */ +struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) +{ + struct cfg80211_registered_device *drv; + + if (!wiphy_idx_valid(wiphy_idx)) + return NULL; + + assert_cfg80211_lock(); + + drv = cfg80211_drv_by_wiphy_idx(wiphy_idx); + if (!drv) + return NULL; + return &drv->wiphy; +} + /* requires cfg80211_mutex to be held! */ static struct cfg80211_registered_device * __cfg80211_drv_from_info(struct genl_info *info) diff --git a/net/wireless/core.h b/net/wireless/core.h index 982cc6be348..cd8e6e3ef11 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -79,6 +79,12 @@ static inline void assert_cfg80211_lock(void) BUG_ON(!mutex_is_locked(&cfg80211_mutex)); } +/* + * You can use this to mark a wiphy_idx as not having an associated wiphy. + * It guarantees cfg80211_drv_by_wiphy_idx(wiphy_idx) will return NULL + */ +#define WIPHY_IDX_STALE -1 + struct cfg80211_internal_bss { struct list_head list; struct rb_node rbn; @@ -88,6 +94,9 @@ struct cfg80211_internal_bss { struct cfg80211_bss pub; }; +struct cfg80211_registered_device *cfg80211_drv_by_wiphy_idx(int wiphy_idx); +int get_wiphy_idx(struct wiphy *wiphy); + /* * This function returns a pointer to the driver * that the genl_info item that is passed refers to. @@ -111,6 +120,9 @@ struct cfg80211_internal_bss { extern struct cfg80211_registered_device * cfg80211_get_dev_from_info(struct genl_info *info); +/* requires cfg80211_drv_mutex to be held! */ +struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx); + /* identical to cfg80211_get_dev_from_info but only operate on ifindex */ extern struct cfg80211_registered_device * cfg80211_get_dev_from_ifindex(int ifindex); diff --git a/net/wireless/reg.c b/net/wireless/reg.c index e49ac9b2ada..d44f3b5481a 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -831,9 +831,12 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band, const struct ieee80211_power_rule *power_rule = NULL; struct ieee80211_supported_band *sband; struct ieee80211_channel *chan; + struct wiphy *request_wiphy; assert_cfg80211_lock(); + request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx); + sband = wiphy->bands[band]; BUG_ON(chan_idx >= sband->n_channels); chan = &sband->channels[chan_idx]; @@ -881,8 +884,8 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band, power_rule = ®_rule->power_rule; if (last_request->initiator == REGDOM_SET_BY_DRIVER && - last_request->wiphy && last_request->wiphy == wiphy && - last_request->wiphy->strict_regulatory) { + request_wiphy && request_wiphy == wiphy && + request_wiphy->strict_regulatory) { /* This gaurantees the driver's requested regulatory domain * will always be used as a base for further regulatory * settings */ @@ -1046,6 +1049,7 @@ static int reg_copy_regd(const struct ieee80211_regdomain **dst_regd, static int ignore_request(struct wiphy *wiphy, enum reg_set_by set_by, const char *alpha2) { + struct wiphy *last_wiphy = NULL; assert_cfg80211_lock(); @@ -1059,10 +1063,13 @@ static int ignore_request(struct wiphy *wiphy, enum reg_set_by set_by, case REGDOM_SET_BY_CORE: return -EINVAL; case REGDOM_SET_BY_COUNTRY_IE: + + last_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx); + if (unlikely(!is_an_alpha2(alpha2))) return -EINVAL; if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) { - if (last_request->wiphy != wiphy) { + if (last_wiphy != wiphy) { /* * Two cards with two APs claiming different * different Country IE alpha2s. We could @@ -1163,7 +1170,7 @@ new_request: request->alpha2[0] = alpha2[0]; request->alpha2[1] = alpha2[1]; request->initiator = set_by; - request->wiphy = wiphy; + request->wiphy_idx = get_wiphy_idx(wiphy); request->intersect = intersect; request->country_ie_checksum = country_ie_checksum; request->country_ie_env = env; @@ -1226,11 +1233,16 @@ EXPORT_SYMBOL(regulatory_hint); static bool reg_same_country_ie_hint(struct wiphy *wiphy, u32 country_ie_checksum) { + struct wiphy *request_wiphy; + assert_cfg80211_lock(); - if (!last_request->wiphy) + request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx); + + if (!request_wiphy) return false; - if (likely(last_request->wiphy != wiphy)) + + if (likely(request_wiphy != wiphy)) return !country_ie_integrity_changes(country_ie_checksum); /* We should not have let these through at this point, they * should have been picked up earlier by the first alpha2 check @@ -1278,14 +1290,15 @@ void regulatory_hint_11d(struct wiphy *wiphy, /* We will run this for *every* beacon processed for the BSSID, so * we optimize an early check to exit out early if we don't have to * do anything */ - if (likely(last_request->wiphy)) { + if (likely(wiphy_idx_valid(last_request->wiphy_idx))) { struct cfg80211_registered_device *drv_last_ie; - drv_last_ie = wiphy_to_dev(last_request->wiphy); + drv_last_ie = + cfg80211_drv_by_wiphy_idx(last_request->wiphy_idx); /* Lets keep this simple -- we trust the first AP * after we intersect with CRDA */ - if (likely(last_request->wiphy == wiphy)) { + if (likely(&drv_last_ie->wiphy == wiphy)) { /* Ignore IEs coming in on this wiphy with * the same alpha2 and environment cap */ if (likely(alpha2_equal(drv_last_ie->country_ie_alpha2, @@ -1377,13 +1390,12 @@ static void print_regdomain(const struct ieee80211_regdomain *rd) { if (is_intersected_alpha2(rd->alpha2)) { - struct wiphy *wiphy = NULL; - struct cfg80211_registered_device *drv; if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) { - if (last_request->wiphy) { - wiphy = last_request->wiphy; - drv = wiphy_to_dev(wiphy); + struct cfg80211_registered_device *drv; + drv = cfg80211_drv_by_wiphy_idx( + last_request->wiphy_idx); + if (drv) { printk(KERN_INFO "cfg80211: Current regulatory " "domain updated by AP to: %c%c\n", drv->country_ie_alpha2[0], @@ -1449,7 +1461,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd) { const struct ieee80211_regdomain *intersected_rd = NULL; struct cfg80211_registered_device *drv = NULL; - struct wiphy *wiphy = NULL; + struct wiphy *request_wiphy; /* Some basic sanity checks first */ if (is_world_regdom(rd->alpha2)) { @@ -1477,8 +1489,6 @@ static int __set_regdom(const struct ieee80211_regdomain *rd) return -EINVAL; } - wiphy = last_request->wiphy; - /* Now lets set the regulatory domain, update all driver channels * and finally inform them of what we have done, in case they want * to review or adjust their own settings based on their own @@ -1494,6 +1504,8 @@ static int __set_regdom(const struct ieee80211_regdomain *rd) return -EINVAL; } + request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx); + if (!last_request->intersect) { int r; @@ -1506,9 +1518,9 @@ static int __set_regdom(const struct ieee80211_regdomain *rd) /* For a driver hint, lets copy the regulatory domain the * driver wanted to the wiphy to deal with conflicts */ - BUG_ON(last_request->wiphy->regd); + BUG_ON(request_wiphy->regd); - r = reg_copy_regd(&last_request->wiphy->regd, rd); + r = reg_copy_regd(&request_wiphy->regd, rd); if (r) return r; @@ -1529,7 +1541,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd) * However if a driver requested this specific regulatory * domain we keep it for its private use */ if (last_request->initiator == REGDOM_SET_BY_DRIVER) - last_request->wiphy->regd = rd; + request_wiphy->regd = rd; else kfree(rd); @@ -1569,7 +1581,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd) if (!intersected_rd) return -EINVAL; - drv = wiphy_to_dev(wiphy); + drv = wiphy_to_dev(request_wiphy); drv->country_ie_alpha2[0] = rd->alpha2[0]; drv->country_ie_alpha2[1] = rd->alpha2[1]; @@ -1618,14 +1630,18 @@ int set_regdom(const struct ieee80211_regdomain *rd) /* Caller must hold cfg80211_mutex */ void reg_device_remove(struct wiphy *wiphy) { + struct wiphy *request_wiphy; + assert_cfg80211_lock(); + request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx); + kfree(wiphy->regd); - if (!last_request || !last_request->wiphy) + if (!last_request || !request_wiphy) return; - if (last_request->wiphy != wiphy) + if (request_wiphy != wiphy) return; - last_request->wiphy = NULL; + last_request->wiphy_idx = WIPHY_IDX_STALE; last_request->country_ie_env = ENVIRON_ANY; } -- cgit v1.2.3-70-g09d2 From fe33eb390854886e1fd5d4835d833b80d145aafb Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Sat, 21 Feb 2009 00:04:30 -0500 Subject: cfg80211: move all regulatory hints to workqueue All regulatory hints (core, driver, userspace and 11d) are now processed in a workqueue. Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath9k/main.c | 8 +- drivers/net/wireless/zd1211rw/zd_mac.c | 6 +- include/net/cfg80211.h | 2 + include/net/wireless.h | 9 +- net/wireless/nl80211.c | 30 ++---- net/wireless/reg.c | 178 ++++++++++++++++++++++++++++++--- net/wireless/reg.h | 2 + 7 files changed, 194 insertions(+), 41 deletions(-) (limited to 'include/net/cfg80211.h') diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c index b47cbe9e7a5..1e3824215ac 100644 --- a/drivers/net/wireless/ath9k/main.c +++ b/drivers/net/wireless/ath9k/main.c @@ -1656,8 +1656,12 @@ int ath_attach(u16 devid, struct ath_softc *sc) error = ieee80211_register_hw(hw); - if (!ath9k_is_world_regd(sc->sc_ah)) - regulatory_hint(hw->wiphy, sc->sc_ah->regulatory.alpha2); + if (!ath9k_is_world_regd(sc->sc_ah)) { + error = regulatory_hint(hw->wiphy, + sc->sc_ah->regulatory.alpha2); + if (error) + goto error_attach; + } /* Initialize LED control */ ath_init_leds(sc); diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c index 7579af27edb..da9214e33a5 100644 --- a/drivers/net/wireless/zd1211rw/zd_mac.c +++ b/drivers/net/wireless/zd1211rw/zd_mac.c @@ -170,10 +170,10 @@ int zd_mac_init_hw(struct ieee80211_hw *hw) goto disable_int; r = zd_reg2alpha2(mac->regdomain, alpha2); - if (!r) - regulatory_hint(hw->wiphy, alpha2); + if (r) + goto disable_int; - r = 0; + r = regulatory_hint(hw->wiphy, alpha2); disable_int: zd_chip_disable_int(chip); out: diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index bb9129fc61c..75fa556728c 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -404,6 +404,7 @@ enum environment_cap { * country IE * @country_ie_env: lets us know if the AP is telling us we are outdoor, * indoor, or if it doesn't matter + * @list: used to insert into the reg_requests_list linked list */ struct regulatory_request { int wiphy_idx; @@ -412,6 +413,7 @@ struct regulatory_request { bool intersect; u32 country_ie_checksum; enum environment_cap country_ie_env; + struct list_head list; }; struct ieee80211_freq_range { diff --git a/include/net/wireless.h b/include/net/wireless.h index d815aa8b453..1f4707d18ad 100644 --- a/include/net/wireless.h +++ b/include/net/wireless.h @@ -401,8 +401,15 @@ ieee80211_get_response_rate(struct ieee80211_supported_band *sband, * domain should be in or by providing a completely build regulatory domain. * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried * for a regulatory domain structure for the respective country. + * + * The wiphy must have been registered to cfg80211 prior to this call. + * For cfg80211 drivers this means you must first use wiphy_register(), + * for mac80211 drivers you must first use ieee80211_register_hw(). + * + * Drivers should check the return value, its possible you can get + * an -ENOMEM. */ -extern void regulatory_hint(struct wiphy *wiphy, const char *alpha2); +extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2); /** * regulatory_hint_11d - hints a country IE as a regulatory domain diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index e0d3879b885..97f69bed3fe 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -1915,34 +1915,24 @@ static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) */ mutex_lock(&cfg80211_mutex); if (unlikely(!cfg80211_regdomain)) { - r = -EINPROGRESS; - goto out; + mutex_unlock(&cfg80211_mutex); + return -EINPROGRESS; } + mutex_unlock(&cfg80211_mutex); - if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) { - r = -EINVAL; - goto out; - } + if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) + return -EINVAL; data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); #ifdef CONFIG_WIRELESS_OLD_REGULATORY /* We ignore world regdom requests with the old regdom setup */ - if (is_world_regdom(data)) { - r = -EINVAL; - goto out; - } + if (is_world_regdom(data)) + return -EINVAL; #endif - r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data, 0, ENVIRON_ANY); - /* - * This means the regulatory domain was already set, however - * we don't want to confuse userspace with a "successful error" - * message so lets just treat it as a success - */ - if (r == -EALREADY) - r = 0; -out: - mutex_unlock(&cfg80211_mutex); + + r = regulatory_hint_user(data); + return r; } diff --git a/net/wireless/reg.c b/net/wireless/reg.c index af762be3f0a..0b8c4b86789 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -64,6 +64,9 @@ const struct ieee80211_regdomain *cfg80211_regdomain; * what it thinks should apply for the same country */ static const struct ieee80211_regdomain *country_ie_regdomain; +static LIST_HEAD(reg_requests_list); +static spinlock_t reg_requests_lock; + /* We keep a static world regulatory domain in case of the absence of CRDA */ static const struct ieee80211_regdomain world_regdom = { .n_reg_rules = 1, @@ -831,7 +834,7 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band, const struct ieee80211_power_rule *power_rule = NULL; struct ieee80211_supported_band *sband; struct ieee80211_channel *chan; - struct wiphy *request_wiphy; + struct wiphy *request_wiphy = NULL; assert_cfg80211_lock(); @@ -1195,6 +1198,89 @@ new_request: return call_crda(alpha2); } +/* This currently only processes user and driver regulatory hints */ +static int reg_process_hint(struct regulatory_request *reg_request) +{ + int r = 0; + struct wiphy *wiphy = NULL; + + BUG_ON(!reg_request->alpha2); + + mutex_lock(&cfg80211_mutex); + + if (wiphy_idx_valid(reg_request->wiphy_idx)) + wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx); + + if (reg_request->initiator == REGDOM_SET_BY_DRIVER && + !wiphy) { + r = -ENODEV; + goto out; + } + + r = __regulatory_hint(wiphy, + reg_request->initiator, + reg_request->alpha2, + reg_request->country_ie_checksum, + reg_request->country_ie_env); + /* This is required so that the orig_* parameters are saved */ + if (r == -EALREADY && wiphy && wiphy->strict_regulatory) + wiphy_update_regulatory(wiphy, reg_request->initiator); +out: + mutex_unlock(&cfg80211_mutex); + + if (r == -EALREADY) + r = 0; + + return r; +} + +static void reg_process_pending_hints(void) + { + struct regulatory_request *reg_request; + int r; + + spin_lock(®_requests_lock); + while (!list_empty(®_requests_list)) { + reg_request = list_first_entry(®_requests_list, + struct regulatory_request, + list); + list_del_init(®_request->list); + spin_unlock(®_requests_lock); + + r = reg_process_hint(reg_request); +#ifdef CONFIG_CFG80211_REG_DEBUG + if (r && (reg_request->initiator == REGDOM_SET_BY_DRIVER || + reg_request->initiator == REGDOM_SET_BY_COUNTRY_IE)) + printk(KERN_ERR "cfg80211: wiphy_idx %d sent a " + "regulatory hint for %c%c but now has " + "gone fishing, ignoring request\n", + reg_request->wiphy_idx, + reg_request->alpha2[0], + reg_request->alpha2[1]); +#endif + kfree(reg_request); + spin_lock(®_requests_lock); + } + spin_unlock(®_requests_lock); +} + +static void reg_todo(struct work_struct *work) +{ + reg_process_pending_hints(); +} + +static DECLARE_WORK(reg_work, reg_todo); + +static void queue_regulatory_request(struct regulatory_request *request) +{ + spin_lock(®_requests_lock); + list_add_tail(&request->list, ®_requests_list); + spin_unlock(®_requests_lock); + + schedule_work(®_work); +} + +/* Core regulatory hint -- happens once during cfg80211_init() */ static int regulatory_hint_core(const char *alpha2) { struct regulatory_request *request; @@ -1210,23 +1296,56 @@ static int regulatory_hint_core(const char *alpha2) request->alpha2[1] = alpha2[1]; request->initiator = REGDOM_SET_BY_CORE; - last_request = request; + queue_regulatory_request(request); - return call_crda(alpha2); + return 0; } -void regulatory_hint(struct wiphy *wiphy, const char *alpha2) +/* User hints */ +int regulatory_hint_user(const char *alpha2) { - int r; + struct regulatory_request *request; + BUG_ON(!alpha2); - mutex_lock(&cfg80211_mutex); - r = __regulatory_hint(wiphy, REGDOM_SET_BY_DRIVER, - alpha2, 0, ENVIRON_ANY); - /* This is required so that the orig_* parameters are saved */ - if (r == -EALREADY && wiphy->strict_regulatory) - wiphy_update_regulatory(wiphy, REGDOM_SET_BY_DRIVER); - mutex_unlock(&cfg80211_mutex); + request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); + if (!request) + return -ENOMEM; + + request->wiphy_idx = WIPHY_IDX_STALE; + request->alpha2[0] = alpha2[0]; + request->alpha2[1] = alpha2[1]; + request->initiator = REGDOM_SET_BY_USER, + + queue_regulatory_request(request); + + return 0; +} + +/* Driver hints */ +int regulatory_hint(struct wiphy *wiphy, const char *alpha2) +{ + struct regulatory_request *request; + + BUG_ON(!alpha2); + BUG_ON(!wiphy); + + request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); + if (!request) + return -ENOMEM; + + request->wiphy_idx = get_wiphy_idx(wiphy); + + /* Must have registered wiphy first */ + BUG_ON(!wiphy_idx_valid(request->wiphy_idx)); + + request->alpha2[0] = alpha2[0]; + request->alpha2[1] = alpha2[1]; + request->initiator = REGDOM_SET_BY_DRIVER; + + queue_regulatory_request(request); + + return 0; } EXPORT_SYMBOL(regulatory_hint); @@ -1260,6 +1379,7 @@ void regulatory_hint_11d(struct wiphy *wiphy, char alpha2[2]; u32 checksum = 0; enum environment_cap env = ENVIRON_ANY; + struct regulatory_request *request; mutex_lock(&cfg80211_mutex); @@ -1343,14 +1463,26 @@ void regulatory_hint_11d(struct wiphy *wiphy, if (WARN_ON(reg_same_country_ie_hint(wiphy, checksum))) goto free_rd_out; + request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); + if (!request) + goto free_rd_out; + /* We keep this around for when CRDA comes back with a response so * we can intersect with that */ country_ie_regdomain = rd; - __regulatory_hint(wiphy, REGDOM_SET_BY_COUNTRY_IE, - country_ie_regdomain->alpha2, checksum, env); + request->wiphy_idx = get_wiphy_idx(wiphy); + request->alpha2[0] = rd->alpha2[0]; + request->alpha2[1] = rd->alpha2[1]; + request->initiator = REGDOM_SET_BY_COUNTRY_IE; + request->country_ie_checksum = checksum; + request->country_ie_env = env; + + mutex_unlock(&cfg80211_mutex); - goto out; + queue_regulatory_request(request); + + return; free_rd_out: kfree(rd); @@ -1661,6 +1793,8 @@ int regulatory_init(void) if (IS_ERR(reg_pdev)) return PTR_ERR(reg_pdev); + spin_lock_init(®_requests_lock); + #ifdef CONFIG_WIRELESS_OLD_REGULATORY cfg80211_regdomain = static_regdom(ieee80211_regdom); @@ -1700,6 +1834,10 @@ int regulatory_init(void) void regulatory_exit(void) { + struct regulatory_request *reg_request, *tmp; + + cancel_work_sync(®_work); + mutex_lock(&cfg80211_mutex); reset_regdomains(); @@ -1711,5 +1849,15 @@ void regulatory_exit(void) platform_device_unregister(reg_pdev); + spin_lock(®_requests_lock); + if (!list_empty(®_requests_list)) { + list_for_each_entry_safe(reg_request, tmp, + ®_requests_list, list) { + list_del(®_request->list); + kfree(reg_request); + } + } + spin_unlock(®_requests_lock); + mutex_unlock(&cfg80211_mutex); } diff --git a/net/wireless/reg.h b/net/wireless/reg.h index fe8c83f34fb..4730def5a69 100644 --- a/net/wireless/reg.h +++ b/net/wireless/reg.h @@ -6,6 +6,8 @@ extern const struct ieee80211_regdomain *cfg80211_regdomain; bool is_world_regdom(const char *alpha2); bool reg_is_valid_request(const char *alpha2); +int regulatory_hint_user(const char *alpha2); + void reg_device_remove(struct wiphy *wiphy); int regulatory_init(void); -- cgit v1.2.3-70-g09d2 From 0fee54cab7d5ebc58fad8c6a0703c4ea016405e3 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Mon, 9 Mar 2009 22:07:40 -0400 Subject: cfg80211: remove REGDOM_SET_BY_INIT This is not used as we can always just assume the first regulatory domain set will _always_ be a static regulatory domain. REGDOM_SET_BY_CORE will be the first request from cfg80211 for a regdomain and that then populates the first regulatory request. Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath9k/main.c | 2 +- drivers/net/wireless/ath9k/regd.c | 1 - include/net/cfg80211.h | 3 --- net/wireless/reg.c | 2 -- 4 files changed, 1 insertion(+), 7 deletions(-) (limited to 'include/net/cfg80211.h') diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c index 5268697be79..1d6b05c0d80 100644 --- a/drivers/net/wireless/ath9k/main.c +++ b/drivers/net/wireless/ath9k/main.c @@ -1670,7 +1670,7 @@ int ath_attach(u16 devid, struct ath_softc *sc) } wiphy_apply_custom_regulatory(hw->wiphy, regd); ath9k_reg_apply_radar_flags(hw->wiphy); - ath9k_reg_apply_world_flags(hw->wiphy, REGDOM_SET_BY_INIT); + ath9k_reg_apply_world_flags(hw->wiphy, REGDOM_SET_BY_DRIVER); INIT_WORK(&sc->chan_work, ath9k_wiphy_chan_work); INIT_DELAYED_WORK(&sc->wiphy_work, ath9k_wiphy_work); diff --git a/drivers/net/wireless/ath9k/regd.c b/drivers/net/wireless/ath9k/regd.c index 639da975bf5..ff0afc02f3c 100644 --- a/drivers/net/wireless/ath9k/regd.c +++ b/drivers/net/wireless/ath9k/regd.c @@ -341,7 +341,6 @@ int ath9k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) switch (request->initiator) { case REGDOM_SET_BY_DRIVER: - case REGDOM_SET_BY_INIT: case REGDOM_SET_BY_CORE: case REGDOM_SET_BY_USER: break; diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 75fa556728c..f195ea46081 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -350,8 +350,6 @@ struct bss_parameters { /** * enum reg_set_by - Indicates who is trying to set the regulatory domain - * @REGDOM_SET_BY_INIT: regulatory domain was set by initialization. We will be - * using a static world regulatory domain by default. * @REGDOM_SET_BY_CORE: Core queried CRDA for a dynamic world regulatory domain. * @REGDOM_SET_BY_USER: User asked the wireless core to set the * regulatory domain. @@ -362,7 +360,6 @@ struct bss_parameters { * should consider. */ enum reg_set_by { - REGDOM_SET_BY_INIT, REGDOM_SET_BY_CORE, REGDOM_SET_BY_USER, REGDOM_SET_BY_DRIVER, diff --git a/net/wireless/reg.c b/net/wireless/reg.c index fa738be897a..47ff44751b7 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -1255,8 +1255,6 @@ static int ignore_request(struct wiphy *wiphy, return 0; switch (pending_request->initiator) { - case REGDOM_SET_BY_INIT: - return -EINVAL; case REGDOM_SET_BY_CORE: return -EINVAL; case REGDOM_SET_BY_COUNTRY_IE: -- cgit v1.2.3-70-g09d2 From 7db90f4a25bd4184f3d36dfa4f512f53b0448da7 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Mon, 9 Mar 2009 22:07:41 -0400 Subject: cfg80211: move enum reg_set_by to nl80211.h We do this so we can later inform userspace who set the regulatory domain and provide details of the request. Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath9k/main.c | 2 +- drivers/net/wireless/ath9k/regd.c | 31 ++++++++------- drivers/net/wireless/ath9k/regd.h | 3 +- include/linux/nl80211.h | 19 +++++++++ include/net/cfg80211.h | 24 ++---------- net/wireless/core.c | 2 +- net/wireless/core.h | 3 +- net/wireless/reg.c | 82 +++++++++++++++++++++------------------ 8 files changed, 90 insertions(+), 76 deletions(-) (limited to 'include/net/cfg80211.h') diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c index 1d6b05c0d80..e9b3f365f09 100644 --- a/drivers/net/wireless/ath9k/main.c +++ b/drivers/net/wireless/ath9k/main.c @@ -1670,7 +1670,7 @@ int ath_attach(u16 devid, struct ath_softc *sc) } wiphy_apply_custom_regulatory(hw->wiphy, regd); ath9k_reg_apply_radar_flags(hw->wiphy); - ath9k_reg_apply_world_flags(hw->wiphy, REGDOM_SET_BY_DRIVER); + ath9k_reg_apply_world_flags(hw->wiphy, NL80211_REGDOM_SET_BY_DRIVER); INIT_WORK(&sc->chan_work, ath9k_wiphy_chan_work); INIT_DELAYED_WORK(&sc->wiphy_work, ath9k_wiphy_work); diff --git a/drivers/net/wireless/ath9k/regd.c b/drivers/net/wireless/ath9k/regd.c index ff0afc02f3c..b8f9b6d6bec 100644 --- a/drivers/net/wireless/ath9k/regd.c +++ b/drivers/net/wireless/ath9k/regd.c @@ -168,8 +168,9 @@ static bool ath9k_is_radar_freq(u16 center_freq) * received a beacon on a channel we can enable active scan and * adhoc (or beaconing). */ -static void ath9k_reg_apply_beaconing_flags(struct wiphy *wiphy, - enum reg_set_by setby) +static void ath9k_reg_apply_beaconing_flags( + struct wiphy *wiphy, + enum nl80211_reg_initiator initiator) { enum ieee80211_band band; struct ieee80211_supported_band *sband; @@ -194,7 +195,7 @@ static void ath9k_reg_apply_beaconing_flags(struct wiphy *wiphy, (ch->flags & IEEE80211_CHAN_RADAR)) continue; - if (setby == REGDOM_SET_BY_COUNTRY_IE) { + if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { r = freq_reg_info(wiphy, ch->center_freq, &bandwidth, ®_rule); if (r) @@ -226,8 +227,9 @@ static void ath9k_reg_apply_beaconing_flags(struct wiphy *wiphy, } /* Allows active scan scan on Ch 12 and 13 */ -static void ath9k_reg_apply_active_scan_flags(struct wiphy *wiphy, - enum reg_set_by setby) +static void ath9k_reg_apply_active_scan_flags( + struct wiphy *wiphy, + enum nl80211_reg_initiator initiator) { struct ieee80211_supported_band *sband; struct ieee80211_channel *ch; @@ -241,7 +243,7 @@ static void ath9k_reg_apply_active_scan_flags(struct wiphy *wiphy, * If no country IE has been received always enable active scan * on these channels. This is only done for specific regulatory SKUs */ - if (setby != REGDOM_SET_BY_COUNTRY_IE) { + if (initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) { ch = &sband->channels[11]; /* CH 12 */ if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; @@ -308,7 +310,8 @@ void ath9k_reg_apply_radar_flags(struct wiphy *wiphy) } } -void ath9k_reg_apply_world_flags(struct wiphy *wiphy, enum reg_set_by setby) +void ath9k_reg_apply_world_flags(struct wiphy *wiphy, + enum nl80211_reg_initiator initiator) { struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); struct ath_wiphy *aphy = hw->priv; @@ -320,11 +323,11 @@ void ath9k_reg_apply_world_flags(struct wiphy *wiphy, enum reg_set_by setby) case 0x63: case 0x66: case 0x67: - ath9k_reg_apply_beaconing_flags(wiphy, setby); + ath9k_reg_apply_beaconing_flags(wiphy, initiator); break; case 0x68: - ath9k_reg_apply_beaconing_flags(wiphy, setby); - ath9k_reg_apply_active_scan_flags(wiphy, setby); + ath9k_reg_apply_beaconing_flags(wiphy, initiator); + ath9k_reg_apply_active_scan_flags(wiphy, initiator); break; } return; @@ -340,11 +343,11 @@ int ath9k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) ath9k_reg_apply_radar_flags(wiphy); switch (request->initiator) { - case REGDOM_SET_BY_DRIVER: - case REGDOM_SET_BY_CORE: - case REGDOM_SET_BY_USER: + case NL80211_REGDOM_SET_BY_DRIVER: + case NL80211_REGDOM_SET_BY_CORE: + case NL80211_REGDOM_SET_BY_USER: break; - case REGDOM_SET_BY_COUNTRY_IE: + case NL80211_REGDOM_SET_BY_COUNTRY_IE: if (ath9k_is_world_regd(sc->sc_ah)) ath9k_reg_apply_world_flags(wiphy, request->initiator); break; diff --git a/drivers/net/wireless/ath9k/regd.h b/drivers/net/wireless/ath9k/regd.h index d48160d0c0e..8f885f3bc8d 100644 --- a/drivers/net/wireless/ath9k/regd.h +++ b/drivers/net/wireless/ath9k/regd.h @@ -236,7 +236,8 @@ enum CountryCode { bool ath9k_is_world_regd(struct ath_hw *ah); const struct ieee80211_regdomain *ath9k_world_regdomain(struct ath_hw *ah); const struct ieee80211_regdomain *ath9k_default_world_regdomain(void); -void ath9k_reg_apply_world_flags(struct wiphy *wiphy, enum reg_set_by setby); +void ath9k_reg_apply_world_flags(struct wiphy *wiphy, + enum nl80211_reg_initiator initiator); void ath9k_reg_apply_radar_flags(struct wiphy *wiphy); int ath9k_regd_init(struct ath_hw *ah); bool ath9k_regd_is_eeprom_valid(struct ath_hw *ah); diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index f6e56370ea6..c0fd432b57d 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -672,6 +672,25 @@ enum nl80211_bitrate_attr { NL80211_BITRATE_ATTR_MAX = __NL80211_BITRATE_ATTR_AFTER_LAST - 1 }; +/** + * enum nl80211_initiator - Indicates the initiator of a reg domain request + * @NL80211_REGDOM_SET_BY_CORE: Core queried CRDA for a dynamic world + * regulatory domain. + * @NL80211_REGDOM_SET_BY_USER: User asked the wireless core to set the + * regulatory domain. + * @NL80211_REGDOM_SET_BY_DRIVER: a wireless drivers has hinted to the + * wireless core it thinks its knows the regulatory domain we should be in. + * @NL80211_REGDOM_SET_BY_COUNTRY_IE: the wireless core has received an + * 802.11 country information element with regulatory information it + * thinks we should consider. + */ +enum nl80211_reg_initiator { + NL80211_REGDOM_SET_BY_CORE, + NL80211_REGDOM_SET_BY_USER, + NL80211_REGDOM_SET_BY_DRIVER, + NL80211_REGDOM_SET_BY_COUNTRY_IE, +}; + /** * enum nl80211_reg_rule_attr - regulatory rule attributes * @NL80211_ATTR_REG_RULE_FLAGS: a set of flags which specify additional diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index f195ea46081..50f3fd9ff52 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -348,28 +348,10 @@ struct bss_parameters { u8 basic_rates_len; }; -/** - * enum reg_set_by - Indicates who is trying to set the regulatory domain - * @REGDOM_SET_BY_CORE: Core queried CRDA for a dynamic world regulatory domain. - * @REGDOM_SET_BY_USER: User asked the wireless core to set the - * regulatory domain. - * @REGDOM_SET_BY_DRIVER: a wireless drivers has hinted to the wireless core - * it thinks its knows the regulatory domain we should be in. - * @REGDOM_SET_BY_COUNTRY_IE: the wireless core has received an 802.11 country - * information element with regulatory information it thinks we - * should consider. - */ -enum reg_set_by { - REGDOM_SET_BY_CORE, - REGDOM_SET_BY_USER, - REGDOM_SET_BY_DRIVER, - REGDOM_SET_BY_COUNTRY_IE, -}; - /** * enum environment_cap - Environment parsed from country IE * @ENVIRON_ANY: indicates country IE applies to both indoor and - * outdoor operation. + * outdoor operation. * @ENVIRON_INDOOR: indicates country IE applies only to indoor operation * @ENVIRON_OUTDOOR: indicates country IE applies only to outdoor operation */ @@ -388,7 +370,7 @@ enum environment_cap { * and potentially inform users of which devices specifically * cased the conflicts. * @initiator: indicates who sent this request, could be any of - * of those set in reg_set_by, %REGDOM_SET_BY_* + * of those set in nl80211_reg_initiator (%NL80211_REGDOM_SET_BY_*) * @alpha2: the ISO / IEC 3166 alpha2 country code of the requested * regulatory domain. We have a few special codes: * 00 - World regulatory domain @@ -405,7 +387,7 @@ enum environment_cap { */ struct regulatory_request { int wiphy_idx; - enum reg_set_by initiator; + enum nl80211_reg_initiator initiator; char alpha2[2]; bool intersect; u32 country_ie_checksum; diff --git a/net/wireless/core.c b/net/wireless/core.c index dd7f222919f..c939f5ee065 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -350,7 +350,7 @@ int wiphy_register(struct wiphy *wiphy) mutex_lock(&cfg80211_mutex); /* set up regulatory info */ - wiphy_update_regulatory(wiphy, REGDOM_SET_BY_CORE); + wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE); res = device_add(&drv->wiphy.dev); if (res) diff --git a/net/wireless/core.h b/net/wireless/core.h index f6c53f5807f..6acd483a61f 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -136,7 +136,8 @@ extern int cfg80211_dev_rename(struct cfg80211_registered_device *drv, char *newname); void ieee80211_set_bitrate_flags(struct wiphy *wiphy); -void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby); +void wiphy_update_regulatory(struct wiphy *wiphy, + enum nl80211_reg_initiator setby); void cfg80211_bss_expire(struct cfg80211_registered_device *dev); void cfg80211_bss_age(struct cfg80211_registered_device *dev, diff --git a/net/wireless/reg.c b/net/wireless/reg.c index 47ff44751b7..68fde6d33dc 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -857,8 +857,8 @@ static int freq_reg_info_regd(struct wiphy *wiphy, * Follow the driver's regulatory domain, if present, unless a country * IE has been processed or a user wants to help complaince further */ - if (last_request->initiator != REGDOM_SET_BY_COUNTRY_IE && - last_request->initiator != REGDOM_SET_BY_USER && + if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && + last_request->initiator != NL80211_REGDOM_SET_BY_USER && wiphy->regd) regd = wiphy->regd; @@ -943,7 +943,8 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band, * http://tinyurl.com/11d-clarification */ if (r == -ERANGE && - last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) { + last_request->initiator == + NL80211_REGDOM_SET_BY_COUNTRY_IE) { #ifdef CONFIG_CFG80211_REG_DEBUG printk(KERN_DEBUG "cfg80211: Leaving channel %d MHz " "intact on %s - no rule found in band on " @@ -956,7 +957,8 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band, * for the band so we respect its band definitions */ #ifdef CONFIG_CFG80211_REG_DEBUG - if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) + if (last_request->initiator == + NL80211_REGDOM_SET_BY_COUNTRY_IE) printk(KERN_DEBUG "cfg80211: Disabling " "channel %d MHz on %s due to " "Country IE\n", @@ -970,7 +972,7 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band, power_rule = ®_rule->power_rule; - if (last_request->initiator == REGDOM_SET_BY_DRIVER && + if (last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER && request_wiphy && request_wiphy == wiphy && request_wiphy->strict_regulatory) { /* @@ -1011,11 +1013,12 @@ static void handle_band(struct wiphy *wiphy, enum ieee80211_band band) handle_channel(wiphy, band, i); } -static bool ignore_reg_update(struct wiphy *wiphy, enum reg_set_by setby) +static bool ignore_reg_update(struct wiphy *wiphy, + enum nl80211_reg_initiator initiator) { if (!last_request) return true; - if (setby == REGDOM_SET_BY_CORE && + if (initiator == NL80211_REGDOM_SET_BY_CORE && wiphy->custom_regulatory) return true; /* @@ -1028,12 +1031,12 @@ static bool ignore_reg_update(struct wiphy *wiphy, enum reg_set_by setby) return false; } -static void update_all_wiphy_regulatory(enum reg_set_by setby) +static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator) { struct cfg80211_registered_device *drv; list_for_each_entry(drv, &cfg80211_drv_list, list) - wiphy_update_regulatory(&drv->wiphy, setby); + wiphy_update_regulatory(&drv->wiphy, initiator); } static void handle_reg_beacon(struct wiphy *wiphy, @@ -1124,7 +1127,7 @@ static bool reg_is_world_roaming(struct wiphy *wiphy) if (is_world_regdom(cfg80211_regdomain->alpha2) || (wiphy->regd && is_world_regdom(wiphy->regd->alpha2))) return true; - if (last_request->initiator != REGDOM_SET_BY_COUNTRY_IE && + if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && wiphy->custom_regulatory) return true; return false; @@ -1138,11 +1141,12 @@ static void reg_process_beacons(struct wiphy *wiphy) wiphy_update_beacon_reg(wiphy); } -void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby) +void wiphy_update_regulatory(struct wiphy *wiphy, + enum nl80211_reg_initiator initiator) { enum ieee80211_band band; - if (ignore_reg_update(wiphy, setby)) + if (ignore_reg_update(wiphy, initiator)) goto out; for (band = 0; band < IEEE80211_NUM_BANDS; band++) { if (wiphy->bands[band]) @@ -1255,15 +1259,16 @@ static int ignore_request(struct wiphy *wiphy, return 0; switch (pending_request->initiator) { - case REGDOM_SET_BY_CORE: + case NL80211_REGDOM_SET_BY_CORE: return -EINVAL; - case REGDOM_SET_BY_COUNTRY_IE: + case NL80211_REGDOM_SET_BY_COUNTRY_IE: last_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx); if (unlikely(!is_an_alpha2(pending_request->alpha2))) return -EINVAL; - if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) { + if (last_request->initiator == + NL80211_REGDOM_SET_BY_COUNTRY_IE) { if (last_wiphy != wiphy) { /* * Two cards with two APs claiming different @@ -1284,8 +1289,8 @@ static int ignore_request(struct wiphy *wiphy, return -EALREADY; } return REG_INTERSECT; - case REGDOM_SET_BY_DRIVER: - if (last_request->initiator == REGDOM_SET_BY_CORE) { + case NL80211_REGDOM_SET_BY_DRIVER: + if (last_request->initiator == NL80211_REGDOM_SET_BY_CORE) { if (is_old_static_regdom(cfg80211_regdomain)) return 0; if (regdom_changes(pending_request->alpha2)) @@ -1298,28 +1303,28 @@ static int ignore_request(struct wiphy *wiphy, * back in or if you add a new device for which the previously * loaded card also agrees on the regulatory domain. */ - if (last_request->initiator == REGDOM_SET_BY_DRIVER && + if (last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER && !regdom_changes(pending_request->alpha2)) return -EALREADY; return REG_INTERSECT; - case REGDOM_SET_BY_USER: - if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) + case NL80211_REGDOM_SET_BY_USER: + if (last_request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) return REG_INTERSECT; /* * If the user knows better the user should set the regdom * to their country before the IE is picked up */ - if (last_request->initiator == REGDOM_SET_BY_USER && + if (last_request->initiator == NL80211_REGDOM_SET_BY_USER && last_request->intersect) return -EOPNOTSUPP; /* * Process user requests only after previous user/driver/core * requests have been processed */ - if (last_request->initiator == REGDOM_SET_BY_CORE || - last_request->initiator == REGDOM_SET_BY_DRIVER || - last_request->initiator == REGDOM_SET_BY_USER) { + if (last_request->initiator == NL80211_REGDOM_SET_BY_CORE || + last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER || + last_request->initiator == NL80211_REGDOM_SET_BY_USER) { if (regdom_changes(last_request->alpha2)) return -EAGAIN; } @@ -1359,7 +1364,8 @@ static int __regulatory_hint(struct wiphy *wiphy, r = ignore_request(wiphy, pending_request); if (r == REG_INTERSECT) { - if (pending_request->initiator == REGDOM_SET_BY_DRIVER) { + if (pending_request->initiator == + NL80211_REGDOM_SET_BY_DRIVER) { r = reg_copy_regd(&wiphy->regd, cfg80211_regdomain); if (r) { kfree(pending_request); @@ -1374,7 +1380,8 @@ static int __regulatory_hint(struct wiphy *wiphy, * wiphy */ if (r == -EALREADY && - pending_request->initiator == REGDOM_SET_BY_DRIVER) { + pending_request->initiator == + NL80211_REGDOM_SET_BY_DRIVER) { r = reg_copy_regd(&wiphy->regd, cfg80211_regdomain); if (r) { kfree(pending_request); @@ -1425,7 +1432,7 @@ static void reg_process_hint(struct regulatory_request *reg_request) if (wiphy_idx_valid(reg_request->wiphy_idx)) wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx); - if (reg_request->initiator == REGDOM_SET_BY_DRIVER && + if (reg_request->initiator == NL80211_REGDOM_SET_BY_DRIVER && !wiphy) { kfree(reg_request); goto out; @@ -1439,7 +1446,7 @@ out: mutex_unlock(&cfg80211_mutex); } -/* Processes regulatory hints, this is all the REGDOM_SET_BY_* */ +/* Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_* */ static void reg_process_pending_hints(void) { struct regulatory_request *reg_request; @@ -1523,7 +1530,7 @@ static int regulatory_hint_core(const char *alpha2) request->alpha2[0] = alpha2[0]; request->alpha2[1] = alpha2[1]; - request->initiator = REGDOM_SET_BY_CORE; + request->initiator = NL80211_REGDOM_SET_BY_CORE; queue_regulatory_request(request); @@ -1544,7 +1551,7 @@ int regulatory_hint_user(const char *alpha2) request->wiphy_idx = WIPHY_IDX_STALE; request->alpha2[0] = alpha2[0]; request->alpha2[1] = alpha2[1]; - request->initiator = REGDOM_SET_BY_USER, + request->initiator = NL80211_REGDOM_SET_BY_USER, queue_regulatory_request(request); @@ -1570,7 +1577,7 @@ int regulatory_hint(struct wiphy *wiphy, const char *alpha2) request->alpha2[0] = alpha2[0]; request->alpha2[1] = alpha2[1]; - request->initiator = REGDOM_SET_BY_DRIVER; + request->initiator = NL80211_REGDOM_SET_BY_DRIVER; queue_regulatory_request(request); @@ -1719,7 +1726,7 @@ void regulatory_hint_11d(struct wiphy *wiphy, request->wiphy_idx = get_wiphy_idx(wiphy); request->alpha2[0] = rd->alpha2[0]; request->alpha2[1] = rd->alpha2[1]; - request->initiator = REGDOM_SET_BY_COUNTRY_IE; + request->initiator = NL80211_REGDOM_SET_BY_COUNTRY_IE; request->country_ie_checksum = checksum; request->country_ie_env = env; @@ -1827,7 +1834,8 @@ static void print_regdomain(const struct ieee80211_regdomain *rd) if (is_intersected_alpha2(rd->alpha2)) { - if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) { + if (last_request->initiator == + NL80211_REGDOM_SET_BY_COUNTRY_IE) { struct cfg80211_registered_device *drv; drv = cfg80211_drv_by_wiphy_idx( last_request->wiphy_idx); @@ -1919,7 +1927,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd) * rd is non static (it means CRDA was present and was used last) * and the pending request came in from a country IE */ - if (last_request->initiator != REGDOM_SET_BY_COUNTRY_IE) { + if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) { /* * If someone else asked us to change the rd lets only bother * checking if the alpha2 changes if CRDA was already called @@ -1951,7 +1959,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd) if (!last_request->intersect) { int r; - if (last_request->initiator != REGDOM_SET_BY_DRIVER) { + if (last_request->initiator != NL80211_REGDOM_SET_BY_DRIVER) { reset_regdomains(); cfg80211_regdomain = rd; return 0; @@ -1975,7 +1983,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd) /* Intersection requires a bit more work */ - if (last_request->initiator != REGDOM_SET_BY_COUNTRY_IE) { + if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) { intersected_rd = regdom_intersect(rd, cfg80211_regdomain); if (!intersected_rd) @@ -1986,7 +1994,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd) * However if a driver requested this specific regulatory * domain we keep it for its private use */ - if (last_request->initiator == REGDOM_SET_BY_DRIVER) + if (last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER) request_wiphy->regd = rd; else kfree(rd); -- cgit v1.2.3-70-g09d2 From 6039f6d23fe792d615da5449e9fa1c6b43caacf6 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Thu, 19 Mar 2009 13:39:21 +0200 Subject: nl80211: Event notifications for MLME events Add new nl80211 event notifications (and a new multicast group, "mlme") for informing user space about received and processed Authentication, (Re)Association Response, Deauthentication, and Disassociation frames in station and IBSS modes (i.e., MLME SAP interface primitives MLME-AUTHENTICATE.confirm, MLME-ASSOCIATE.confirm, MLME-REASSOCIATE.confirm, MLME-DEAUTHENTICATE.indicate, and MLME-DISASSOCIATE.indication). The event data is encapsulated as the 802.11 management frame since we already have the frame in that format and it includes all the needed information. This is the initial step in providing MLME SAP interface for authentication and association with nl80211. In other words, kernel code will act as the MLME and a user space application can control it as the SME. Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- include/linux/nl80211.h | 36 ++++++++++++++++++++++++- include/net/cfg80211.h | 46 +++++++++++++++++++++++++++++++ net/mac80211/mlme.c | 9 +++++-- net/wireless/Makefile | 2 +- net/wireless/mlme.c | 46 +++++++++++++++++++++++++++++++ net/wireless/nl80211.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++++ net/wireless/nl80211.h | 12 +++++++++ 7 files changed, 219 insertions(+), 4 deletions(-) create mode 100644 net/wireless/mlme.c (limited to 'include/net/cfg80211.h') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 3700d927e24..5ce68ae8314 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -161,6 +161,25 @@ * %NL80211_REG_TYPE_COUNTRY the alpha2 to which we have moved on * to (%NL80211_ATTR_REG_ALPHA2). * + * @NL80211_CMD_AUTHENTICATE: authentication notification (on the "mlme" + * multicast group). This event reports reception of an Authentication + * frame in station and IBSS modes when the local MLME processed the + * frame, i.e., it was for the local STA and was received in correct + * state. This is similar to MLME-AUTHENTICATE.confirm primitive in the + * MLME SAP interface (kernel providing MLME, userspace SME). The + * included NL80211_ATTR_FRAME attribute contains the management frame + * (including both the header and frame body, but not FCS). + * @NL80211_CMD_ASSOCIATE: association notification; like + * NL80211_CMD_AUTHENTICATE but for Association Response and Reassociation + * Response frames (similar to MLME-ASSOCIATE.confirm or + * MLME-REASSOCIATE.confirm primitives). + * @NL80211_CMD_DEAUTHENTICATE: deauthentication notification; like + * NL80211_CMD_AUTHENTICATE but for Deauthentication frames (similar to + * MLME-DEAUTHENTICATE.indication primitive). + * @NL80211_CMD_DISASSOCIATE: disassociation notification; like + * NL80211_CMD_AUTHENTICATE but for Disassociation frames (similar to + * MLME-DISASSOCIATE.indication primitive). + * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use */ @@ -217,6 +236,11 @@ enum nl80211_commands { NL80211_CMD_REG_CHANGE, + NL80211_CMD_AUTHENTICATE, + NL80211_CMD_ASSOCIATE, + NL80211_CMD_DEAUTHENTICATE, + NL80211_CMD_DISASSOCIATE, + /* add new commands above here */ /* used to define NL80211_CMD_MAX below */ @@ -230,8 +254,11 @@ enum nl80211_commands { */ #define NL80211_CMD_SET_BSS NL80211_CMD_SET_BSS #define NL80211_CMD_SET_MGMT_EXTRA_IE NL80211_CMD_SET_MGMT_EXTRA_IE - #define NL80211_CMD_REG_CHANGE NL80211_CMD_REG_CHANGE +#define NL80211_CMD_AUTHENTICATE NL80211_CMD_AUTHENTICATE +#define NL80211_CMD_ASSOCIATE NL80211_CMD_ASSOCIATE +#define NL80211_CMD_DEAUTHENTICATE NL80211_CMD_DEAUTHENTICATE +#define NL80211_CMD_DISASSOCIATE NL80211_CMD_DISASSOCIATE /** * enum nl80211_attrs - nl80211 netlink attributes @@ -353,6 +380,10 @@ enum nl80211_commands { * an array of command numbers (i.e. a mapping index to command number) * that the driver for the given wiphy supports. * + * @NL80211_ATTR_FRAME: frame data (binary attribute), including frame header + * and body, but not FCS; used, e.g., with NL80211_CMD_AUTHENTICATE and + * NL80211_CMD_ASSOCIATE events + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -432,6 +463,8 @@ enum nl80211_attrs { NL80211_ATTR_SUPPORTED_COMMANDS, + NL80211_ATTR_FRAME, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -451,6 +484,7 @@ enum nl80211_attrs { #define NL80211_ATTR_IE NL80211_ATTR_IE #define NL80211_ATTR_REG_INITIATOR NL80211_ATTR_REG_INITIATOR #define NL80211_ATTR_REG_TYPE NL80211_ATTR_REG_TYPE +#define NL80211_ATTR_FRAME NL80211_ATTR_FRAME #define NL80211_MAX_SUPP_RATES 32 #define NL80211_MAX_SUPP_REG_RULES 32 diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 50f3fd9ff52..ad44016021b 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -807,4 +807,50 @@ void cfg80211_put_bss(struct cfg80211_bss *bss); */ void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); +/** + * cfg80211_send_rx_auth - notification of processed authentication + * @dev: network device + * @buf: authentication frame (header + body) + * @len: length of the frame data + * + * This function is called whenever an authentication has been processed in + * station mode. + */ +void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len); + +/** + * cfg80211_send_rx_assoc - notification of processed association + * @dev: network device + * @buf: (re)association response frame (header + body) + * @len: length of the frame data + * + * This function is called whenever a (re)association response has been + * processed in station mode. + */ +void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len); + +/** + * cfg80211_send_rx_deauth - notification of processed deauthentication + * @dev: network device + * @buf: deauthentication frame (header + body) + * @len: length of the frame data + * + * This function is called whenever deauthentication has been processed in + * station mode. + */ +void cfg80211_send_rx_deauth(struct net_device *dev, const u8 *buf, + size_t len); + +/** + * cfg80211_send_rx_disassoc - notification of processed disassociation + * @dev: network device + * @buf: disassociation response frame (header + body) + * @len: length of the frame data + * + * This function is called whenever disassociation has been processed in + * station mode. + */ +void cfg80211_send_rx_disassoc(struct net_device *dev, const u8 *buf, + size_t len); + #endif /* __NET_CFG80211_H */ diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 1f49b63d8dd..6dc7a61bc18 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1085,11 +1085,13 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, case WLAN_AUTH_OPEN: case WLAN_AUTH_LEAP: ieee80211_auth_completed(sdata); + cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len); break; case WLAN_AUTH_SHARED_KEY: - if (ifmgd->auth_transaction == 4) + if (ifmgd->auth_transaction == 4) { ieee80211_auth_completed(sdata); - else + cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len); + } else ieee80211_auth_challenge(sdata, mgmt, len); break; } @@ -1125,6 +1127,7 @@ static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, true, false, 0); ifmgd->flags &= ~IEEE80211_STA_AUTHENTICATED; + cfg80211_send_rx_deauth(sdata->dev, (u8 *) mgmt, len); } @@ -1154,6 +1157,7 @@ static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, } ieee80211_set_disassoc(sdata, false, false, reason_code); + cfg80211_send_rx_disassoc(sdata->dev, (u8 *) mgmt, len); } @@ -1370,6 +1374,7 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, ieee80211_set_associated(sdata, changed); ieee80211_associated(sdata); + cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len); } diff --git a/net/wireless/Makefile b/net/wireless/Makefile index c157b4d8014..6d1e7b27b75 100644 --- a/net/wireless/Makefile +++ b/net/wireless/Makefile @@ -5,7 +5,7 @@ obj-$(CONFIG_LIB80211_CRYPT_WEP) += lib80211_crypt_wep.o obj-$(CONFIG_LIB80211_CRYPT_CCMP) += lib80211_crypt_ccmp.o obj-$(CONFIG_LIB80211_CRYPT_TKIP) += lib80211_crypt_tkip.o -cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o nl80211.o +cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o nl80211.o mlme.o cfg80211-$(CONFIG_WIRELESS_EXT) += wext-compat.o ccflags-y += -D__CHECK_ENDIAN__ diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c new file mode 100644 index 00000000000..bec5721b6f9 --- /dev/null +++ b/net/wireless/mlme.c @@ -0,0 +1,46 @@ +/* + * cfg80211 MLME SAP interface + * + * Copyright (c) 2009, Jouni Malinen + */ + +#include +#include +#include +#include +#include +#include "core.h" +#include "nl80211.h" + +void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len) +{ + struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + nl80211_send_rx_auth(rdev, dev, buf, len); +} +EXPORT_SYMBOL(cfg80211_send_rx_auth); + +void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len) +{ + struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + nl80211_send_rx_assoc(rdev, dev, buf, len); +} +EXPORT_SYMBOL(cfg80211_send_rx_assoc); + +void cfg80211_send_rx_deauth(struct net_device *dev, const u8 *buf, size_t len) +{ + struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + nl80211_send_rx_deauth(rdev, dev, buf, len); +} +EXPORT_SYMBOL(cfg80211_send_rx_deauth); + +void cfg80211_send_rx_disassoc(struct net_device *dev, const u8 *buf, + size_t len) +{ + struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + nl80211_send_rx_disassoc(rdev, dev, buf, len); +} +EXPORT_SYMBOL(cfg80211_send_rx_disassoc); diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index a3ecf8d7389..c034c2418cb 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -2830,6 +2830,9 @@ static struct genl_ops nl80211_ops[] = { .dumpit = nl80211_dump_scan, }, }; +static struct genl_multicast_group nl80211_mlme_mcgrp = { + .name = "mlme", +}; /* multicast groups */ static struct genl_multicast_group nl80211_config_mcgrp = { @@ -2975,6 +2978,71 @@ nla_put_failure: nlmsg_free(msg); } +static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, + struct net_device *netdev, + const u8 *buf, size_t len, + enum nl80211_commands cmd) +{ + struct sk_buff *msg; + void *hdr; + + msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); + if (!msg) + return; + + hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); + if (!hdr) { + nlmsg_free(msg); + return; + } + + NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); + NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); + NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf); + + if (genlmsg_end(msg, hdr) < 0) { + nlmsg_free(msg); + return; + } + + genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_KERNEL); + return; + + nla_put_failure: + genlmsg_cancel(msg, hdr); + nlmsg_free(msg); +} + +void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, + struct net_device *netdev, const u8 *buf, size_t len) +{ + nl80211_send_mlme_event(rdev, netdev, buf, len, + NL80211_CMD_AUTHENTICATE); +} + +void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, + struct net_device *netdev, const u8 *buf, + size_t len) +{ + nl80211_send_mlme_event(rdev, netdev, buf, len, NL80211_CMD_ASSOCIATE); +} + +void nl80211_send_rx_deauth(struct cfg80211_registered_device *rdev, + struct net_device *netdev, const u8 *buf, + size_t len) +{ + nl80211_send_mlme_event(rdev, netdev, buf, len, + NL80211_CMD_DEAUTHENTICATE); +} + +void nl80211_send_rx_disassoc(struct cfg80211_registered_device *rdev, + struct net_device *netdev, const u8 *buf, + size_t len) +{ + nl80211_send_mlme_event(rdev, netdev, buf, len, + NL80211_CMD_DISASSOCIATE); +} + /* initialisation/exit functions */ int nl80211_init(void) @@ -3003,6 +3071,10 @@ int nl80211_init(void) if (err) goto err_out; + err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp); + if (err) + goto err_out; + return 0; err_out: genl_unregister_family(&nl80211_fam); diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h index 5b5fe1339de..b77af4ab80b 100644 --- a/net/wireless/nl80211.h +++ b/net/wireless/nl80211.h @@ -11,5 +11,17 @@ extern void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, extern void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, struct net_device *netdev); extern void nl80211_send_reg_change_event(struct regulatory_request *request); +extern void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, + struct net_device *netdev, + const u8 *buf, size_t len); +extern void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, + struct net_device *netdev, + const u8 *buf, size_t len); +extern void nl80211_send_rx_deauth(struct cfg80211_registered_device *rdev, + struct net_device *netdev, + const u8 *buf, size_t len); +extern void nl80211_send_rx_disassoc(struct cfg80211_registered_device *rdev, + struct net_device *netdev, + const u8 *buf, size_t len); #endif /* __NET_WIRELESS_NL80211_H */ -- cgit v1.2.3-70-g09d2 From 636a5d3625993c5ca59abc81794b9ded93cdb740 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Thu, 19 Mar 2009 13:39:22 +0200 Subject: nl80211: Add MLME primitives to support external SME This patch adds new nl80211 commands to allow user space to request authentication and association (and also deauthentication and disassociation). The commands are structured to allow separate authentication and association steps, i.e., the interface between kernel and user space is similar to the MLME SAP interface in IEEE 802.11 standard and an user space application takes the role of the SME. The patch introduces MLME-AUTHENTICATE.request, MLME-{,RE}ASSOCIATE.request, MLME-DEAUTHENTICATE.request, and MLME-DISASSOCIATE.request primitives. The authentication and association commands request the actual operations in two steps (assuming the driver supports this; if not, separate authentication step is skipped; this could end up being a separate "connect" command). The initial implementation for mac80211 uses the current net/mac80211/mlme.c for actual sending and processing of management frames and the new nl80211 commands will just stop the current state machine from moving automatically from authentication to association. Future cleanup may move more of the MLME operations into cfg80211. The goal of this design is to provide more control of authentication and association process to user space without having to move the full MLME implementation. This should be enough to allow IEEE 802.11r FT protocol and 802.11s SAE authentication to be implemented. Obviously, this will also bring the extra benefit of not having to use WEXT for association requests with mac80211. An example implementation of a user space SME using the new nl80211 commands is available for wpa_supplicant. This patch is enough to get IEEE 802.11r FT protocol working with over-the-air mechanism (over-the-DS will need additional MLME primitives for handling the FT Action frames). Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 1 + include/linux/nl80211.h | 58 +++++++++-- include/net/cfg80211.h | 113 ++++++++++++++++++++ net/mac80211/cfg.c | 140 +++++++++++++++++++++++++ net/mac80211/ieee80211_i.h | 7 +- net/mac80211/mlme.c | 45 ++++++-- net/mac80211/wext.c | 3 + net/wireless/nl80211.c | 255 +++++++++++++++++++++++++++++++++++++++++++++ 8 files changed, 601 insertions(+), 21 deletions(-) (limited to 'include/net/cfg80211.h') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 382387e75b8..4b501b48ce8 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -867,6 +867,7 @@ struct ieee80211_ht_info { /* Authentication algorithms */ #define WLAN_AUTH_OPEN 0 #define WLAN_AUTH_SHARED_KEY 1 +#define WLAN_AUTH_FT 2 #define WLAN_AUTH_LEAP 128 #define WLAN_AUTH_CHALLENGE_LEN 128 diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 5ce68ae8314..9685eaab40a 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -161,24 +161,37 @@ * %NL80211_REG_TYPE_COUNTRY the alpha2 to which we have moved on * to (%NL80211_ATTR_REG_ALPHA2). * - * @NL80211_CMD_AUTHENTICATE: authentication notification (on the "mlme" - * multicast group). This event reports reception of an Authentication + * @NL80211_CMD_AUTHENTICATE: authentication request and notification. + * This command is used both as a command (request to authenticate) and + * as an event on the "mlme" multicast group indicating completion of the + * authentication process. + * When used as a command, %NL80211_ATTR_IFINDEX is used to identify the + * interface. %NL80211_ATTR_MAC is used to specify PeerSTAAddress (and + * BSSID in case of station mode). %NL80211_ATTR_SSID is used to specify + * the SSID (mainly for association, but is included in authentication + * request, too, to help BSS selection. %NL80211_ATTR_WIPHY_FREQ is used + * to specify the frequence of the channel in MHz. %NL80211_ATTR_AUTH_TYPE + * is used to specify the authentication type. %NL80211_ATTR_IE is used to + * define IEs (VendorSpecificInfo, but also including RSN IE and FT IEs) + * to be added to the frame. + * When used as an event, this reports reception of an Authentication * frame in station and IBSS modes when the local MLME processed the * frame, i.e., it was for the local STA and was received in correct * state. This is similar to MLME-AUTHENTICATE.confirm primitive in the * MLME SAP interface (kernel providing MLME, userspace SME). The * included NL80211_ATTR_FRAME attribute contains the management frame * (including both the header and frame body, but not FCS). - * @NL80211_CMD_ASSOCIATE: association notification; like - * NL80211_CMD_AUTHENTICATE but for Association Response and Reassociation - * Response frames (similar to MLME-ASSOCIATE.confirm or - * MLME-REASSOCIATE.confirm primitives). - * @NL80211_CMD_DEAUTHENTICATE: deauthentication notification; like + * @NL80211_CMD_ASSOCIATE: association request and notification; like + * NL80211_CMD_AUTHENTICATE but for Association and Reassociation + * (similar to MLME-ASSOCIATE.request, MLME-REASSOCIATE.request, + * MLME-ASSOCIATE.confirm or MLME-REASSOCIATE.confirm primitives). + * @NL80211_CMD_DEAUTHENTICATE: deauthentication request and notification; like * NL80211_CMD_AUTHENTICATE but for Deauthentication frames (similar to - * MLME-DEAUTHENTICATE.indication primitive). - * @NL80211_CMD_DISASSOCIATE: disassociation notification; like + * MLME-DEAUTHENTICATION.request and MLME-DEAUTHENTICATE.indication + * primitives). + * @NL80211_CMD_DISASSOCIATE: disassociation request and notification; like * NL80211_CMD_AUTHENTICATE but for Disassociation frames (similar to - * MLME-DISASSOCIATE.indication primitive). + * MLME-DISASSOCIATE.request and MLME-DISASSOCIATE.indication primitives). * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use @@ -383,6 +396,11 @@ enum nl80211_commands { * @NL80211_ATTR_FRAME: frame data (binary attribute), including frame header * and body, but not FCS; used, e.g., with NL80211_CMD_AUTHENTICATE and * NL80211_CMD_ASSOCIATE events + * @NL80211_ATTR_SSID: SSID (binary attribute, 0..32 octets) + * @NL80211_ATTR_AUTH_TYPE: AuthenticationType, see &enum nl80211_auth_type, + * represented as a u32 + * @NL80211_ATTR_REASON_CODE: ReasonCode for %NL80211_CMD_DEAUTHENTICATE and + * %NL80211_CMD_DISASSOCIATE, u16 * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use @@ -464,6 +482,9 @@ enum nl80211_attrs { NL80211_ATTR_SUPPORTED_COMMANDS, NL80211_ATTR_FRAME, + NL80211_ATTR_SSID, + NL80211_ATTR_AUTH_TYPE, + NL80211_ATTR_REASON_CODE, /* add attributes here, update the policy in nl80211.c */ @@ -485,6 +506,9 @@ enum nl80211_attrs { #define NL80211_ATTR_REG_INITIATOR NL80211_ATTR_REG_INITIATOR #define NL80211_ATTR_REG_TYPE NL80211_ATTR_REG_TYPE #define NL80211_ATTR_FRAME NL80211_ATTR_FRAME +#define NL80211_ATTR_SSID NL80211_ATTR_SSID +#define NL80211_ATTR_AUTH_TYPE NL80211_ATTR_AUTH_TYPE +#define NL80211_ATTR_REASON_CODE NL80211_ATTR_REASON_CODE #define NL80211_MAX_SUPP_RATES 32 #define NL80211_MAX_SUPP_REG_RULES 32 @@ -1018,4 +1042,18 @@ enum nl80211_bss { NL80211_BSS_MAX = __NL80211_BSS_AFTER_LAST - 1 }; +/** + * enum nl80211_auth_type - AuthenticationType + * + * @NL80211_AUTHTYPE_OPEN_SYSTEM: Open System authentication + * @NL80211_AUTHTYPE_SHARED_KEY: Shared Key authentication (WEP only) + * @NL80211_AUTHTYPE_FT: Fast BSS Transition (IEEE 802.11r) + * @NL80211_AUTHTYPE_NETWORK_EAP: Network EAP (some Cisco APs and mainly LEAP) + */ +enum nl80211_auth_type { + NL80211_AUTHTYPE_OPEN_SYSTEM, + NL80211_AUTHTYPE_SHARED_KEY, + NL80211_AUTHTYPE_FT, + NL80211_AUTHTYPE_NETWORK_EAP, +}; #endif /* __LINUX_NL80211_H */ diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index ad44016021b..0da9a55881a 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -578,6 +578,105 @@ struct cfg80211_bss { u8 priv[0] __attribute__((__aligned__(sizeof(void *)))); }; +/** + * struct cfg80211_auth_request - Authentication request data + * + * This structure provides information needed to complete IEEE 802.11 + * authentication. + * NOTE: This structure will likely change when more code from mac80211 is + * moved into cfg80211 so that non-mac80211 drivers can benefit from it, too. + * Before using this in a driver that does not use mac80211, it would be better + * to check the status of that work and better yet, volunteer to work on it. + * + * @chan: The channel to use or %NULL if not specified (auto-select based on + * scan results) + * @peer_addr: The address of the peer STA (AP BSSID in infrastructure case); + * this field is required to be present; if the driver wants to help with + * BSS selection, it should use (yet to be added) MLME event to allow user + * space SME to be notified of roaming candidate, so that the SME can then + * use the authentication request with the recommended BSSID and whatever + * other data may be needed for authentication/association + * @ssid: SSID or %NULL if not yet available + * @ssid_len: Length of ssid in octets + * @auth_type: Authentication type (algorithm) + * @ie: Extra IEs to add to Authentication frame or %NULL + * @ie_len: Length of ie buffer in octets + */ +struct cfg80211_auth_request { + struct ieee80211_channel *chan; + u8 *peer_addr; + const u8 *ssid; + size_t ssid_len; + enum nl80211_auth_type auth_type; + const u8 *ie; + size_t ie_len; +}; + +/** + * struct cfg80211_assoc_request - (Re)Association request data + * + * This structure provides information needed to complete IEEE 802.11 + * (re)association. + * NOTE: This structure will likely change when more code from mac80211 is + * moved into cfg80211 so that non-mac80211 drivers can benefit from it, too. + * Before using this in a driver that does not use mac80211, it would be better + * to check the status of that work and better yet, volunteer to work on it. + * + * @chan: The channel to use or %NULL if not specified (auto-select based on + * scan results) + * @peer_addr: The address of the peer STA (AP BSSID); this field is required + * to be present and the STA must be in State 2 (authenticated) with the + * peer STA + * @ssid: SSID + * @ssid_len: Length of ssid in octets + * @ie: Extra IEs to add to (Re)Association Request frame or %NULL + * @ie_len: Length of ie buffer in octets + */ +struct cfg80211_assoc_request { + struct ieee80211_channel *chan; + u8 *peer_addr; + const u8 *ssid; + size_t ssid_len; + const u8 *ie; + size_t ie_len; +}; + +/** + * struct cfg80211_deauth_request - Deauthentication request data + * + * This structure provides information needed to complete IEEE 802.11 + * deauthentication. + * + * @peer_addr: The address of the peer STA (AP BSSID); this field is required + * to be present and the STA must be authenticated with the peer STA + * @ie: Extra IEs to add to Deauthentication frame or %NULL + * @ie_len: Length of ie buffer in octets + */ +struct cfg80211_deauth_request { + u8 *peer_addr; + u16 reason_code; + const u8 *ie; + size_t ie_len; +}; + +/** + * struct cfg80211_disassoc_request - Disassociation request data + * + * This structure provides information needed to complete IEEE 802.11 + * disassocation. + * + * @peer_addr: The address of the peer STA (AP BSSID); this field is required + * to be present and the STA must be associated with the peer STA + * @ie: Extra IEs to add to Disassociation frame or %NULL + * @ie_len: Length of ie buffer in octets + */ +struct cfg80211_disassoc_request { + u8 *peer_addr; + u16 reason_code; + const u8 *ie; + size_t ie_len; +}; + /** * struct cfg80211_ops - backend description for wireless configuration * @@ -650,6 +749,11 @@ struct cfg80211_bss { * the driver, and will be valid until passed to cfg80211_scan_done(). * For scan results, call cfg80211_inform_bss(); you can call this outside * the scan/scan_done bracket too. + * + * @auth: Request to authenticate with the specified peer + * @assoc: Request to (re)associate with the specified peer + * @deauth: Request to deauthenticate from the specified peer + * @disassoc: Request to disassociate from the specified peer */ struct cfg80211_ops { int (*suspend)(struct wiphy *wiphy); @@ -730,6 +834,15 @@ struct cfg80211_ops { int (*scan)(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_scan_request *request); + + int (*auth)(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_auth_request *req); + int (*assoc)(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_assoc_request *req); + int (*deauth)(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_deauth_request *req); + int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_disassoc_request *req); }; /* temporary wext handlers */ diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 58693e52d45..223e536e842 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1300,6 +1300,142 @@ static int ieee80211_scan(struct wiphy *wiphy, return ieee80211_request_scan(sdata, req); } +static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_auth_request *req) +{ + struct ieee80211_sub_if_data *sdata; + + if (!netif_running(dev)) + return -ENETDOWN; + + sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (sdata->vif.type != NL80211_IFTYPE_STATION) + return -EOPNOTSUPP; + + switch (req->auth_type) { + case NL80211_AUTHTYPE_OPEN_SYSTEM: + sdata->u.mgd.auth_algs = IEEE80211_AUTH_ALG_OPEN; + break; + case NL80211_AUTHTYPE_SHARED_KEY: + sdata->u.mgd.auth_algs = IEEE80211_AUTH_ALG_SHARED_KEY; + break; + case NL80211_AUTHTYPE_FT: + sdata->u.mgd.auth_algs = IEEE80211_AUTH_ALG_FT; + break; + case NL80211_AUTHTYPE_NETWORK_EAP: + sdata->u.mgd.auth_algs = IEEE80211_AUTH_ALG_LEAP; + break; + default: + return -EOPNOTSUPP; + } + + memcpy(sdata->u.mgd.bssid, req->peer_addr, ETH_ALEN); + sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL; + sdata->u.mgd.flags |= IEEE80211_STA_BSSID_SET; + + /* TODO: req->chan */ + sdata->u.mgd.flags |= IEEE80211_STA_AUTO_CHANNEL_SEL; + + if (req->ssid) { + sdata->u.mgd.flags |= IEEE80211_STA_SSID_SET; + memcpy(sdata->u.mgd.ssid, req->ssid, req->ssid_len); + sdata->u.mgd.ssid_len = req->ssid_len; + sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_SSID_SEL; + } + + kfree(sdata->u.mgd.sme_auth_ie); + sdata->u.mgd.sme_auth_ie = NULL; + sdata->u.mgd.sme_auth_ie_len = 0; + if (req->ie) { + sdata->u.mgd.sme_auth_ie = kmalloc(req->ie_len, GFP_KERNEL); + if (sdata->u.mgd.sme_auth_ie == NULL) + return -ENOMEM; + memcpy(sdata->u.mgd.sme_auth_ie, req->ie, req->ie_len); + sdata->u.mgd.sme_auth_ie_len = req->ie_len; + } + + sdata->u.mgd.flags |= IEEE80211_STA_EXT_SME; + sdata->u.mgd.state = IEEE80211_STA_MLME_DIRECT_PROBE; + ieee80211_sta_req_auth(sdata); + return 0; +} + +static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_assoc_request *req) +{ + struct ieee80211_sub_if_data *sdata; + int ret; + + if (!netif_running(dev)) + return -ENETDOWN; + + sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (sdata->vif.type != NL80211_IFTYPE_STATION) + return -EOPNOTSUPP; + + if (memcmp(sdata->u.mgd.bssid, req->peer_addr, ETH_ALEN) != 0 || + !(sdata->u.mgd.flags & IEEE80211_STA_AUTHENTICATED)) + return -ENOLINK; /* not authenticated */ + + sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL; + sdata->u.mgd.flags |= IEEE80211_STA_BSSID_SET; + + /* TODO: req->chan */ + sdata->u.mgd.flags |= IEEE80211_STA_AUTO_CHANNEL_SEL; + + if (req->ssid) { + sdata->u.mgd.flags |= IEEE80211_STA_SSID_SET; + memcpy(sdata->u.mgd.ssid, req->ssid, req->ssid_len); + sdata->u.mgd.ssid_len = req->ssid_len; + sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_SSID_SEL; + } else + sdata->u.mgd.flags |= IEEE80211_STA_AUTO_SSID_SEL; + + ret = ieee80211_sta_set_extra_ie(sdata, req->ie, req->ie_len); + if (ret) + return ret; + + sdata->u.mgd.flags |= IEEE80211_STA_EXT_SME; + sdata->u.mgd.state = IEEE80211_STA_MLME_ASSOCIATE; + ieee80211_sta_req_auth(sdata); + return 0; +} + +static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_deauth_request *req) +{ + struct ieee80211_sub_if_data *sdata; + + if (!netif_running(dev)) + return -ENETDOWN; + + sdata = IEEE80211_DEV_TO_SUB_IF(dev); + if (sdata->vif.type != NL80211_IFTYPE_STATION) + return -EOPNOTSUPP; + + /* TODO: req->ie */ + return ieee80211_sta_deauthenticate(sdata, req->reason_code); +} + +static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_disassoc_request *req) +{ + struct ieee80211_sub_if_data *sdata; + + if (!netif_running(dev)) + return -ENETDOWN; + + sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (sdata->vif.type != NL80211_IFTYPE_STATION) + return -EOPNOTSUPP; + + /* TODO: req->ie */ + return ieee80211_sta_disassociate(sdata, req->reason_code); +} + struct cfg80211_ops mac80211_config_ops = { .add_virtual_intf = ieee80211_add_iface, .del_virtual_intf = ieee80211_del_iface, @@ -1333,4 +1469,8 @@ struct cfg80211_ops mac80211_config_ops = { .suspend = ieee80211_suspend, .resume = ieee80211_resume, .scan = ieee80211_scan, + .auth = ieee80211_auth, + .assoc = ieee80211_assoc, + .deauth = ieee80211_deauth, + .disassoc = ieee80211_disassoc, }; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index ad12c2a03a9..7b96d95f48b 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -256,6 +256,7 @@ struct mesh_preq_queue { #define IEEE80211_STA_TKIP_WEP_USED BIT(14) #define IEEE80211_STA_CSA_RECEIVED BIT(15) #define IEEE80211_STA_MFP_ENABLED BIT(16) +#define IEEE80211_STA_EXT_SME BIT(17) /* flags for MLME request */ #define IEEE80211_STA_REQ_SCAN 0 #define IEEE80211_STA_REQ_DIRECT_PROBE 1 @@ -266,6 +267,7 @@ struct mesh_preq_queue { #define IEEE80211_AUTH_ALG_OPEN BIT(0) #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1) #define IEEE80211_AUTH_ALG_LEAP BIT(2) +#define IEEE80211_AUTH_ALG_FT BIT(3) struct ieee80211_if_managed { struct timer_list timer; @@ -335,6 +337,9 @@ struct ieee80211_if_managed { size_t ie_deauth_len; u8 *ie_disassoc; size_t ie_disassoc_len; + + u8 *sme_auth_ie; + size_t sme_auth_ie_len; }; enum ieee80211_ibss_flags { @@ -970,7 +975,7 @@ ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, struct ieee80211_rx_status *rx_status); int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, - char *ie, size_t len); + const char *ie, size_t len); void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); void ieee80211_scan_failed(struct ieee80211_local *local); diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 6dc7a61bc18..d1bcc843877 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -730,6 +730,8 @@ static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; + u8 *ies; + size_t ies_len; ifmgd->auth_tries++; if (ifmgd->auth_tries > IEEE80211_AUTH_MAX_TRIES) { @@ -755,7 +757,14 @@ static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata) printk(KERN_DEBUG "%s: authenticate with AP %pM\n", sdata->dev->name, ifmgd->bssid); - ieee80211_send_auth(sdata, 1, ifmgd->auth_alg, NULL, 0, + if (ifmgd->flags & IEEE80211_STA_EXT_SME) { + ies = ifmgd->sme_auth_ie; + ies_len = ifmgd->sme_auth_ie_len; + } else { + ies = NULL; + ies_len = 0; + } + ieee80211_send_auth(sdata, 1, ifmgd->auth_alg, ies, ies_len, ifmgd->bssid, 0); ifmgd->auth_transaction = 2; @@ -870,7 +879,8 @@ static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata) int wep_privacy; int privacy_invoked; - if (!ifmgd || (ifmgd->flags & IEEE80211_STA_MIXED_CELL)) + if (!ifmgd || (ifmgd->flags & (IEEE80211_STA_MIXED_CELL | + IEEE80211_STA_EXT_SME))) return 0; bss = ieee80211_rx_bss_get(local, ifmgd->bssid, @@ -998,7 +1008,11 @@ static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata) printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name); ifmgd->flags |= IEEE80211_STA_AUTHENTICATED; - ieee80211_associate(sdata); + if (ifmgd->flags & IEEE80211_STA_EXT_SME) { + /* Wait for SME to request association */ + ifmgd->state = IEEE80211_STA_MLME_DISABLED; + } else + ieee80211_associate(sdata); } @@ -1084,6 +1098,7 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, switch (ifmgd->auth_alg) { case WLAN_AUTH_OPEN: case WLAN_AUTH_LEAP: + case WLAN_AUTH_FT: ieee80211_auth_completed(sdata); cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len); break; @@ -1117,9 +1132,10 @@ static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, printk(KERN_DEBUG "%s: deauthenticated (Reason: %u)\n", sdata->dev->name, reason_code); - if (ifmgd->state == IEEE80211_STA_MLME_AUTHENTICATE || - ifmgd->state == IEEE80211_STA_MLME_ASSOCIATE || - ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) { + if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) && + (ifmgd->state == IEEE80211_STA_MLME_AUTHENTICATE || + ifmgd->state == IEEE80211_STA_MLME_ASSOCIATE || + ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED)) { ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE; mod_timer(&ifmgd->timer, jiffies + IEEE80211_RETRY_AUTH_INTERVAL); @@ -1150,7 +1166,8 @@ static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, printk(KERN_DEBUG "%s: disassociated (Reason: %u)\n", sdata->dev->name, reason_code); - if (ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) { + if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) && + ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) { ifmgd->state = IEEE80211_STA_MLME_ASSOCIATE; mod_timer(&ifmgd->timer, jiffies + IEEE80211_RETRY_AUTH_INTERVAL); @@ -1664,6 +1681,8 @@ static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata) ifmgd->auth_alg = WLAN_AUTH_SHARED_KEY; else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_LEAP) ifmgd->auth_alg = WLAN_AUTH_LEAP; + else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_FT) + ifmgd->auth_alg = WLAN_AUTH_FT; else ifmgd->auth_alg = WLAN_AUTH_OPEN; ifmgd->auth_transaction = -1; @@ -1687,7 +1706,8 @@ static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata) u16 capa_val = WLAN_CAPABILITY_ESS; struct ieee80211_channel *chan = local->oper_channel; - if (ifmgd->flags & (IEEE80211_STA_AUTO_SSID_SEL | + if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) && + ifmgd->flags & (IEEE80211_STA_AUTO_SSID_SEL | IEEE80211_STA_AUTO_BSSID_SEL | IEEE80211_STA_AUTO_CHANNEL_SEL)) { capa_mask |= WLAN_CAPABILITY_PRIVACY; @@ -1884,7 +1904,11 @@ void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata) ieee80211_set_disassoc(sdata, true, true, WLAN_REASON_DEAUTH_LEAVING); - set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request); + if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) || + ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE) + set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request); + else if (ifmgd->flags & IEEE80211_STA_EXT_SME) + set_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request); queue_work(local->hw.workqueue, &ifmgd->work); } } @@ -1953,7 +1977,8 @@ int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) return ieee80211_sta_commit(sdata); } -int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len) +int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, + const char *ie, size_t len) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c index e55d2834764..ce21d66b102 100644 --- a/net/mac80211/wext.c +++ b/net/mac80211/wext.c @@ -137,6 +137,7 @@ static int ieee80211_ioctl_siwgenie(struct net_device *dev, if (ret) return ret; sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL; + sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME; ieee80211_sta_req_auth(sdata); return 0; } @@ -224,6 +225,7 @@ static int ieee80211_ioctl_siwessid(struct net_device *dev, if (ret) return ret; + sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME; ieee80211_sta_req_auth(sdata); return 0; } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) @@ -287,6 +289,7 @@ static int ieee80211_ioctl_siwap(struct net_device *dev, ret = ieee80211_sta_set_bssid(sdata, (u8 *) &ap_addr->sa_data); if (ret) return ret; + sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME; ieee80211_sta_req_auth(sdata); return 0; } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index c034c2418cb..9e1318d1d4b 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -111,6 +111,11 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { .len = IEEE80211_MAX_DATA_LEN }, [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, + + [NL80211_ATTR_SSID] = { .type = NLA_BINARY, + .len = IEEE80211_MAX_SSID_LEN }, + [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, + [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, }; /* message building helper */ @@ -265,6 +270,10 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, CMD(set_mesh_params, SET_MESH_PARAMS); CMD(change_bss, SET_BSS); CMD(set_mgmt_extra_ie, SET_MGMT_EXTRA_IE); + CMD(auth, AUTHENTICATE); + CMD(assoc, ASSOCIATE); + CMD(deauth, DEAUTHENTICATE); + CMD(disassoc, DISASSOCIATE); #undef CMD nla_nest_end(msg, nl_cmds); @@ -2646,6 +2655,228 @@ static int nl80211_dump_scan(struct sk_buff *skb, return err; } +static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *drv; + struct net_device *dev; + struct cfg80211_auth_request req; + struct wiphy *wiphy; + int err; + + rtnl_lock(); + + err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); + if (err) + goto unlock_rtnl; + + if (!drv->ops->auth) { + err = -EOPNOTSUPP; + goto out; + } + + if (!info->attrs[NL80211_ATTR_MAC]) { + err = -EINVAL; + goto out; + } + + wiphy = &drv->wiphy; + memset(&req, 0, sizeof(req)); + + req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); + + if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { + req.chan = ieee80211_get_channel( + wiphy, + nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); + if (!req.chan) { + err = -EINVAL; + goto out; + } + } + + if (info->attrs[NL80211_ATTR_SSID]) { + req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); + req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); + } + + if (info->attrs[NL80211_ATTR_IE]) { + req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); + req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); + } + + if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { + req.auth_type = + nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); + } + + err = drv->ops->auth(&drv->wiphy, dev, &req); + +out: + cfg80211_put_dev(drv); + dev_put(dev); +unlock_rtnl: + rtnl_unlock(); + return err; +} + +static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *drv; + struct net_device *dev; + struct cfg80211_assoc_request req; + struct wiphy *wiphy; + int err; + + rtnl_lock(); + + err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); + if (err) + goto unlock_rtnl; + + if (!drv->ops->assoc) { + err = -EOPNOTSUPP; + goto out; + } + + if (!info->attrs[NL80211_ATTR_MAC] || + !info->attrs[NL80211_ATTR_SSID]) { + err = -EINVAL; + goto out; + } + + wiphy = &drv->wiphy; + memset(&req, 0, sizeof(req)); + + req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); + + if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { + req.chan = ieee80211_get_channel( + wiphy, + nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); + if (!req.chan) { + err = -EINVAL; + goto out; + } + } + + if (nla_len(info->attrs[NL80211_ATTR_SSID]) > IEEE80211_MAX_SSID_LEN) { + err = -EINVAL; + goto out; + } + req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); + req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); + + if (info->attrs[NL80211_ATTR_IE]) { + req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); + req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); + } + + err = drv->ops->assoc(&drv->wiphy, dev, &req); + +out: + cfg80211_put_dev(drv); + dev_put(dev); +unlock_rtnl: + rtnl_unlock(); + return err; +} + +static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *drv; + struct net_device *dev; + struct cfg80211_deauth_request req; + struct wiphy *wiphy; + int err; + + rtnl_lock(); + + err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); + if (err) + goto unlock_rtnl; + + if (!drv->ops->deauth) { + err = -EOPNOTSUPP; + goto out; + } + + if (!info->attrs[NL80211_ATTR_MAC]) { + err = -EINVAL; + goto out; + } + + wiphy = &drv->wiphy; + memset(&req, 0, sizeof(req)); + + req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); + + if (info->attrs[NL80211_ATTR_REASON_CODE]) + req.reason_code = + nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); + + if (info->attrs[NL80211_ATTR_IE]) { + req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); + req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); + } + + err = drv->ops->deauth(&drv->wiphy, dev, &req); + +out: + cfg80211_put_dev(drv); + dev_put(dev); +unlock_rtnl: + rtnl_unlock(); + return err; +} + +static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *drv; + struct net_device *dev; + struct cfg80211_disassoc_request req; + struct wiphy *wiphy; + int err; + + rtnl_lock(); + + err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); + if (err) + goto unlock_rtnl; + + if (!drv->ops->disassoc) { + err = -EOPNOTSUPP; + goto out; + } + + if (!info->attrs[NL80211_ATTR_MAC]) { + err = -EINVAL; + goto out; + } + + wiphy = &drv->wiphy; + memset(&req, 0, sizeof(req)); + + req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); + + if (info->attrs[NL80211_ATTR_REASON_CODE]) + req.reason_code = + nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); + + if (info->attrs[NL80211_ATTR_IE]) { + req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); + req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); + } + + err = drv->ops->disassoc(&drv->wiphy, dev, &req); + +out: + cfg80211_put_dev(drv); + dev_put(dev); +unlock_rtnl: + rtnl_unlock(); + return err; +} + static struct genl_ops nl80211_ops[] = { { .cmd = NL80211_CMD_GET_WIPHY, @@ -2829,6 +3060,30 @@ static struct genl_ops nl80211_ops[] = { .policy = nl80211_policy, .dumpit = nl80211_dump_scan, }, + { + .cmd = NL80211_CMD_AUTHENTICATE, + .doit = nl80211_authenticate, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, + { + .cmd = NL80211_CMD_ASSOCIATE, + .doit = nl80211_associate, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, + { + .cmd = NL80211_CMD_DEAUTHENTICATE, + .doit = nl80211_deauthenticate, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, + { + .cmd = NL80211_CMD_DISASSOCIATE, + .doit = nl80211_disassociate, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, }; static struct genl_multicast_group nl80211_mlme_mcgrp = { .name = "mlme", -- cgit v1.2.3-70-g09d2 From 65fc73ac4a310945dfeceac961726c2765ad2ec0 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Fri, 20 Mar 2009 21:21:16 +0200 Subject: nl80211: Remove NL80211_CMD_SET_MGMT_EXTRA_IE The functionality that NL80211_CMD_SET_MGMT_EXTRA_IE provided can now be achieved with cleaner design by adding IE(s) into NL80211_CMD_TRIGGER_SCAN, NL80211_CMD_AUTHENTICATE, NL80211_CMD_ASSOCIATE, NL80211_CMD_DEAUTHENTICATE, and NL80211_CMD_DISASSOCIATE. Since this is a very recently added command and there are no known (or known planned) applications using NL80211_CMD_SET_MGMT_EXTRA_IE and taken into account how much extra complexity it adds to the IE processing we have now (and need to add in the future to fix IE order in couple of frames), it looks like the best option is to just remove the implementation of this command for now. The enum values themselves are left to avoid changing the nl80211 command or attribute numbers. Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- include/linux/nl80211.h | 8 ++++- include/net/cfg80211.h | 26 -------------- net/mac80211/cfg.c | 86 ---------------------------------------------- net/mac80211/ieee80211_i.h | 15 -------- net/mac80211/iface.c | 7 ---- net/mac80211/mlme.c | 36 ++----------------- net/mac80211/util.c | 29 +++------------- net/wireless/nl80211.c | 47 ------------------------- 8 files changed, 14 insertions(+), 240 deletions(-) (limited to 'include/net/cfg80211.h') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 9685eaab40a..cbe8ce3bf48 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -142,6 +142,12 @@ * %NL80211_ATTR_IE. If the command succeeds, the requested data will be * added to all specified management frames generated by * kernel/firmware/driver. + * Note: This command has been removed and it is only reserved at this + * point to avoid re-using existing command number. The functionality this + * command was planned for has been provided with cleaner design with the + * option to specify additional IEs in NL80211_CMD_TRIGGER_SCAN, + * NL80211_CMD_AUTHENTICATE, NL80211_CMD_ASSOCIATE, + * NL80211_CMD_DEAUTHENTICATE, and NL80211_CMD_DISASSOCIATE. * * @NL80211_CMD_GET_SCAN: get scan results * @NL80211_CMD_TRIGGER_SCAN: trigger a new scan with the given parameters @@ -238,7 +244,7 @@ enum nl80211_commands { NL80211_CMD_GET_MESH_PARAMS, NL80211_CMD_SET_MESH_PARAMS, - NL80211_CMD_SET_MGMT_EXTRA_IE, + NL80211_CMD_SET_MGMT_EXTRA_IE /* reserved; not used */, NL80211_CMD_GET_REG, diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 0da9a55881a..dca4a6b0461 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -471,26 +471,6 @@ struct ieee80211_txq_params { u8 aifs; }; -/** - * struct mgmt_extra_ie_params - Extra management frame IE parameters - * - * Used to add extra IE(s) into management frames. If the driver cannot add the - * requested data into all management frames of the specified subtype that are - * generated in kernel or firmware/hardware, it must reject the configuration - * call. The IE data buffer is added to the end of the specified management - * frame body after all other IEs. This addition is not applied to frames that - * are injected through a monitor interface. - * - * @subtype: Management frame subtype - * @ies: IE data buffer or %NULL to remove previous data - * @ies_len: Length of @ies in octets - */ -struct mgmt_extra_ie_params { - u8 subtype; - u8 *ies; - int ies_len; -}; - /* from net/wireless.h */ struct wiphy; @@ -743,8 +723,6 @@ struct cfg80211_disassoc_request { * * @set_channel: Set channel * - * @set_mgmt_extra_ie: Set extra IE data for management frames - * * @scan: Request to do a scan. If returning zero, the scan request is given * the driver, and will be valid until passed to cfg80211_scan_done(). * For scan results, call cfg80211_inform_bss(); you can call this outside @@ -828,10 +806,6 @@ struct cfg80211_ops { struct ieee80211_channel *chan, enum nl80211_channel_type channel_type); - int (*set_mgmt_extra_ie)(struct wiphy *wiphy, - struct net_device *dev, - struct mgmt_extra_ie_params *params); - int (*scan)(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_scan_request *request); diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 223e536e842..f5c15c9a00c 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1181,91 +1181,6 @@ static int ieee80211_set_channel(struct wiphy *wiphy, return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); } -static int set_mgmt_extra_ie_sta(struct ieee80211_sub_if_data *sdata, - u8 subtype, u8 *ies, size_t ies_len) -{ - struct ieee80211_local *local = sdata->local; - struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - - switch (subtype) { - case IEEE80211_STYPE_PROBE_REQ >> 4: - if (local->ops->hw_scan) - break; - kfree(ifmgd->ie_probereq); - ifmgd->ie_probereq = ies; - ifmgd->ie_probereq_len = ies_len; - return 0; - case IEEE80211_STYPE_PROBE_RESP >> 4: - kfree(ifmgd->ie_proberesp); - ifmgd->ie_proberesp = ies; - ifmgd->ie_proberesp_len = ies_len; - return 0; - case IEEE80211_STYPE_AUTH >> 4: - kfree(ifmgd->ie_auth); - ifmgd->ie_auth = ies; - ifmgd->ie_auth_len = ies_len; - return 0; - case IEEE80211_STYPE_ASSOC_REQ >> 4: - kfree(ifmgd->ie_assocreq); - ifmgd->ie_assocreq = ies; - ifmgd->ie_assocreq_len = ies_len; - return 0; - case IEEE80211_STYPE_REASSOC_REQ >> 4: - kfree(ifmgd->ie_reassocreq); - ifmgd->ie_reassocreq = ies; - ifmgd->ie_reassocreq_len = ies_len; - return 0; - case IEEE80211_STYPE_DEAUTH >> 4: - kfree(ifmgd->ie_deauth); - ifmgd->ie_deauth = ies; - ifmgd->ie_deauth_len = ies_len; - return 0; - case IEEE80211_STYPE_DISASSOC >> 4: - kfree(ifmgd->ie_disassoc); - ifmgd->ie_disassoc = ies; - ifmgd->ie_disassoc_len = ies_len; - return 0; - } - - return -EOPNOTSUPP; -} - -static int ieee80211_set_mgmt_extra_ie(struct wiphy *wiphy, - struct net_device *dev, - struct mgmt_extra_ie_params *params) -{ - struct ieee80211_sub_if_data *sdata; - u8 *ies; - size_t ies_len; - int ret = -EOPNOTSUPP; - - if (params->ies) { - ies = kmemdup(params->ies, params->ies_len, GFP_KERNEL); - if (ies == NULL) - return -ENOMEM; - ies_len = params->ies_len; - } else { - ies = NULL; - ies_len = 0; - } - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - - switch (sdata->vif.type) { - case NL80211_IFTYPE_STATION: - ret = set_mgmt_extra_ie_sta(sdata, params->subtype, - ies, ies_len); - break; - default: - ret = -EOPNOTSUPP; - break; - } - - if (ret) - kfree(ies); - return ret; -} - #ifdef CONFIG_PM static int ieee80211_suspend(struct wiphy *wiphy) { @@ -1465,7 +1380,6 @@ struct cfg80211_ops mac80211_config_ops = { .change_bss = ieee80211_change_bss, .set_txq_params = ieee80211_set_txq_params, .set_channel = ieee80211_set_channel, - .set_mgmt_extra_ie = ieee80211_set_mgmt_extra_ie, .suspend = ieee80211_suspend, .resume = ieee80211_resume, .scan = ieee80211_scan, diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 547cfac218e..f69e84ab961 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -323,21 +323,6 @@ struct ieee80211_if_managed { int wmm_last_param_set; /* Extra IE data for management frames */ - u8 *ie_probereq; - size_t ie_probereq_len; - u8 *ie_proberesp; - size_t ie_proberesp_len; - u8 *ie_auth; - size_t ie_auth_len; - u8 *ie_assocreq; - size_t ie_assocreq_len; - u8 *ie_reassocreq; - size_t ie_reassocreq_len; - u8 *ie_deauth; - size_t ie_deauth_len; - u8 *ie_disassoc; - size_t ie_disassoc_len; - u8 *sme_auth_ie; size_t sme_auth_ie_len; }; diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 6b56dc2208e..34f4798a98f 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -653,13 +653,6 @@ static void ieee80211_teardown_sdata(struct net_device *dev) kfree(sdata->u.mgd.extra_ie); kfree(sdata->u.mgd.assocreq_ies); kfree(sdata->u.mgd.assocresp_ies); - kfree(sdata->u.mgd.ie_probereq); - kfree(sdata->u.mgd.ie_proberesp); - kfree(sdata->u.mgd.ie_auth); - kfree(sdata->u.mgd.ie_assocreq); - kfree(sdata->u.mgd.ie_reassocreq); - kfree(sdata->u.mgd.ie_deauth); - kfree(sdata->u.mgd.ie_disassoc); kfree(sdata->u.mgd.sme_auth_ie); break; case NL80211_IFTYPE_WDS: diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index d1bcc843877..b0808efcedf 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -82,38 +82,23 @@ static int ieee80211_compatible_rates(struct ieee80211_bss *bss, /* frame sending functions */ -static void add_extra_ies(struct sk_buff *skb, u8 *ies, size_t ies_len) -{ - if (ies) - memcpy(skb_put(skb, ies_len), ies, ies_len); -} - static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; - u8 *pos, *ies, *ht_ie, *e_ies; + u8 *pos, *ies, *ht_ie; int i, len, count, rates_len, supp_rates_len; u16 capab; struct ieee80211_bss *bss; int wmm = 0; struct ieee80211_supported_band *sband; u32 rates = 0; - size_t e_ies_len; - - if (ifmgd->flags & IEEE80211_STA_PREV_BSSID_SET) { - e_ies = sdata->u.mgd.ie_reassocreq; - e_ies_len = sdata->u.mgd.ie_reassocreq_len; - } else { - e_ies = sdata->u.mgd.ie_assocreq; - e_ies_len = sdata->u.mgd.ie_assocreq_len; - } skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 + ifmgd->extra_ie_len + - ifmgd->ssid_len + e_ies_len); + ifmgd->ssid_len); if (!skb) { printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " "frame\n", sdata->dev->name); @@ -304,8 +289,6 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); } - add_extra_ies(skb, e_ies, e_ies_len); - kfree(ifmgd->assocreq_ies); ifmgd->assocreq_ies_len = (skb->data + skb->len) - ies; ifmgd->assocreq_ies = kmalloc(ifmgd->assocreq_ies_len, GFP_KERNEL); @@ -323,19 +306,8 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; - u8 *ies; - size_t ies_len; - if (stype == IEEE80211_STYPE_DEAUTH) { - ies = sdata->u.mgd.ie_deauth; - ies_len = sdata->u.mgd.ie_deauth_len; - } else { - ies = sdata->u.mgd.ie_disassoc; - ies_len = sdata->u.mgd.ie_disassoc_len; - } - - skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + - ies_len); + skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); if (!skb) { printk(KERN_DEBUG "%s: failed to allocate buffer for " "deauth/disassoc frame\n", sdata->dev->name); @@ -353,8 +325,6 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, /* u.deauth.reason_code == u.disassoc.reason_code */ mgmt->u.deauth.reason_code = cpu_to_le16(reason); - add_extra_ies(skb, ies, ies_len); - ieee80211_tx_skb(sdata, skb, ifmgd->flags & IEEE80211_STA_MFP_ENABLED); } diff --git a/net/mac80211/util.c b/net/mac80211/util.c index e0431a1d218..444bb14c95e 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -846,16 +846,9 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, struct ieee80211_local *local = sdata->local; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; - const u8 *ie_auth = NULL; - int ie_auth_len = 0; - - if (sdata->vif.type == NL80211_IFTYPE_STATION) { - ie_auth_len = sdata->u.mgd.ie_auth_len; - ie_auth = sdata->u.mgd.ie_auth; - } skb = dev_alloc_skb(local->hw.extra_tx_headroom + - sizeof(*mgmt) + 6 + extra_len + ie_auth_len); + sizeof(*mgmt) + 6 + extra_len); if (!skb) { printk(KERN_DEBUG "%s: failed to allocate buffer for auth " "frame\n", sdata->dev->name); @@ -877,8 +870,6 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, mgmt->u.auth.status_code = cpu_to_le16(0); if (extra) memcpy(skb_put(skb, extra_len), extra, extra_len); - if (ie_auth) - memcpy(skb_put(skb, ie_auth_len), ie_auth, ie_auth_len); ieee80211_tx_skb(sdata, skb, encrypt); } @@ -891,20 +882,11 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, struct ieee80211_supported_band *sband; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; - u8 *pos, *supp_rates, *esupp_rates = NULL, *extra_preq_ie = NULL; - int i, extra_preq_ie_len = 0; - - switch (sdata->vif.type) { - case NL80211_IFTYPE_STATION: - extra_preq_ie_len = sdata->u.mgd.ie_probereq_len; - extra_preq_ie = sdata->u.mgd.ie_probereq; - break; - default: - break; - } + u8 *pos, *supp_rates, *esupp_rates = NULL; + int i; skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 + - ie_len + extra_preq_ie_len); + ie_len); if (!skb) { printk(KERN_DEBUG "%s: failed to allocate buffer for probe " "request\n", sdata->dev->name); @@ -953,9 +935,6 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, if (ie) memcpy(skb_put(skb, ie_len), ie, ie_len); - if (extra_preq_ie) - memcpy(skb_put(skb, extra_preq_ie_len), extra_preq_ie, - extra_preq_ie_len); ieee80211_tx_skb(sdata, skb, 0); } diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 9e1318d1d4b..44c79972be5 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -269,7 +269,6 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, CMD(add_mpath, NEW_MPATH); CMD(set_mesh_params, SET_MESH_PARAMS); CMD(change_bss, SET_BSS); - CMD(set_mgmt_extra_ie, SET_MGMT_EXTRA_IE); CMD(auth, AUTHENTICATE); CMD(assoc, ASSOCIATE); CMD(deauth, DEAUTHENTICATE); @@ -2355,46 +2354,6 @@ static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) return -EINVAL; } -static int nl80211_set_mgmt_extra_ie(struct sk_buff *skb, - struct genl_info *info) -{ - struct cfg80211_registered_device *drv; - int err; - struct net_device *dev; - struct mgmt_extra_ie_params params; - - memset(¶ms, 0, sizeof(params)); - - if (!info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) - return -EINVAL; - params.subtype = nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); - if (params.subtype > 15) - return -EINVAL; /* FC Subtype field is 4 bits (0..15) */ - - if (info->attrs[NL80211_ATTR_IE]) { - params.ies = nla_data(info->attrs[NL80211_ATTR_IE]); - params.ies_len = nla_len(info->attrs[NL80211_ATTR_IE]); - } - - rtnl_lock(); - - err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); - if (err) - goto out_rtnl; - - if (drv->ops->set_mgmt_extra_ie) - err = drv->ops->set_mgmt_extra_ie(&drv->wiphy, dev, ¶ms); - else - err = -EOPNOTSUPP; - - cfg80211_put_dev(drv); - dev_put(dev); - out_rtnl: - rtnl_unlock(); - - return err; -} - static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) { struct cfg80211_registered_device *drv; @@ -3043,12 +3002,6 @@ static struct genl_ops nl80211_ops[] = { .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, }, - { - .cmd = NL80211_CMD_SET_MGMT_EXTRA_IE, - .doit = nl80211_set_mgmt_extra_ie, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, { .cmd = NL80211_CMD_TRIGGER_SCAN, .doit = nl80211_trigger_scan, -- cgit v1.2.3-70-g09d2 From a08c1c1ac0c26229ca1ca45d554b209a56edc8be Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Sun, 22 Mar 2009 21:57:28 +0200 Subject: cfg80211: add feature to hold bss In beacon filtering there needs to be a way to not expire the BSS even when no beacons are received. Add an interface to cfg80211 to hold BSS and make sure that it's not expired. Signed-off-by: Kalle Valo Signed-off-by: John W. Linville --- include/net/cfg80211.h | 18 ++++++++++++++++++ net/wireless/core.h | 2 ++ net/wireless/scan.c | 27 ++++++++++++++++++++++++++- 3 files changed, 46 insertions(+), 1 deletion(-) (limited to 'include/net/cfg80211.h') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index dca4a6b0461..5389afdc129 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -539,6 +539,7 @@ enum cfg80211_signal_type { * is no guarantee that these are well-formed!) * @len_information_elements: total length of the information elements * @signal: signal strength value (type depends on the wiphy's signal_type) + * @hold: BSS should not expire * @free_priv: function pointer to free private data * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes */ @@ -940,4 +941,21 @@ void cfg80211_send_rx_deauth(struct net_device *dev, const u8 *buf, void cfg80211_send_rx_disassoc(struct net_device *dev, const u8 *buf, size_t len); +/** + * cfg80211_hold_bss - exclude bss from expiration + * @bss: bss which should not expire + * + * In a case when the BSS is not updated but it shouldn't expire this + * function can be used to mark the BSS to be excluded from expiration. + */ +void cfg80211_hold_bss(struct cfg80211_bss *bss); + +/** + * cfg80211_unhold_bss - remove expiration exception from the BSS + * @bss: bss which can expire again + * + * This function marks the BSS to be expirable again. + */ +void cfg80211_unhold_bss(struct cfg80211_bss *bss); + #endif /* __NET_CFG80211_H */ diff --git a/net/wireless/core.h b/net/wireless/core.h index 6acd483a61f..97a6fd8b2b0 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -90,6 +90,8 @@ struct cfg80211_internal_bss { struct rb_node rbn; unsigned long ts; struct kref ref; + bool hold; + /* must be last because of priv member */ struct cfg80211_bss pub; }; diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 280dbcd02c1..2a00e362f5f 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -80,7 +80,8 @@ void cfg80211_bss_expire(struct cfg80211_registered_device *dev) bool expired = false; list_for_each_entry_safe(bss, tmp, &dev->bss_list, list) { - if (!time_after(jiffies, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE)) + if (bss->hold || + !time_after(jiffies, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE)) continue; list_del(&bss->list); rb_erase(&bss->rbn, &dev->bss_tree); @@ -471,6 +472,30 @@ void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *pub) } EXPORT_SYMBOL(cfg80211_unlink_bss); +void cfg80211_hold_bss(struct cfg80211_bss *pub) +{ + struct cfg80211_internal_bss *bss; + + if (!pub) + return; + + bss = container_of(pub, struct cfg80211_internal_bss, pub); + bss->hold = true; +} +EXPORT_SYMBOL(cfg80211_hold_bss); + +void cfg80211_unhold_bss(struct cfg80211_bss *pub) +{ + struct cfg80211_internal_bss *bss; + + if (!pub) + return; + + bss = container_of(pub, struct cfg80211_internal_bss, pub); + bss->hold = false; +} +EXPORT_SYMBOL(cfg80211_unhold_bss); + #ifdef CONFIG_WIRELESS_EXT int cfg80211_wext_siwscan(struct net_device *dev, struct iw_request_info *info, -- cgit v1.2.3-70-g09d2