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authorJohn W. Linville <linville@tuxdriver.com>2014-11-20 16:09:30 -0500
committerJohn W. Linville <linville@tuxdriver.com>2014-11-20 16:09:30 -0500
commit9a638ddfb09e5aa17158842c95526e1aa79f92e6 (patch)
tree7edf2e128b23f711cf28273dca3ff69f3706925a /net/mac80211
parentb4c1b70823721e9edb19a839188e4dae50ce878d (diff)
parent75769c80e381653994293b5aa5a8cfec50088f9f (diff)
Merge tag 'mac80211-next-for-john-2014-11-20' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg <johannes@sipsolutions.net> says: "It has been a while since my last pull request, so we accumulated another relatively large set of changes: * TDLS off-channel support set from Arik/Liad, with some support patches I did * custom regulatory fixes from Arik * minstrel VHT fix (and a small optimisation) from Felix * add back radiotap vendor namespace support (myself) * random MAC address scanning for cfg80211/mac80211/hwsim (myself) * CSA improvements (Luca) * WoWLAN Net Detect (wake on network found) support (Luca) * and lots of other smaller changes from many people" Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/agg-tx.c7
-rw-r--r--net/mac80211/cfg.c27
-rw-r--r--net/mac80211/debugfs_sta.c11
-rw-r--r--net/mac80211/driver-ops.h83
-rw-r--r--net/mac80211/ieee80211_i.h42
-rw-r--r--net/mac80211/iface.c2
-rw-r--r--net/mac80211/main.c6
-rw-r--r--net/mac80211/mlme.c28
-rw-r--r--net/mac80211/rate.c5
-rw-r--r--net/mac80211/rc80211_minstrel_ht.c6
-rw-r--r--net/mac80211/rx.c146
-rw-r--r--net/mac80211/scan.c129
-rw-r--r--net/mac80211/sta_info.c15
-rw-r--r--net/mac80211/sta_info.h11
-rw-r--r--net/mac80211/status.c55
-rw-r--r--net/mac80211/tdls.c792
-rw-r--r--net/mac80211/trace.h142
-rw-r--r--net/mac80211/tx.c303
-rw-r--r--net/mac80211/util.c60
-rw-r--r--net/mac80211/vht.c2
-rw-r--r--net/mac80211/wme.c39
21 files changed, 1689 insertions, 222 deletions
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index 9242c60048c..a360c15cc97 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -509,6 +509,10 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
struct tid_ampdu_tx *tid_tx;
int ret = 0;
+ if (WARN(sta->reserved_tid == tid,
+ "Requested to start BA session on reserved tid=%d", tid))
+ return -EINVAL;
+
trace_api_start_tx_ba_session(pubsta, tid);
if (WARN_ON_ONCE(!local->ops->ampdu_action))
@@ -765,6 +769,9 @@ int ieee80211_stop_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid)
goto unlock;
}
+ WARN(sta->reserved_tid == tid,
+ "Requested to stop BA session on reserved tid=%d", tid);
+
if (test_bit(HT_AGG_STATE_STOPPING, &tid_tx->state)) {
/* already in progress stopping it */
ret = 0;
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 06185940cbb..e75d5c53e97 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1042,6 +1042,13 @@ static int sta_apply_parameters(struct ieee80211_local *local,
clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
}
+ /* mark TDLS channel switch support, if the AP allows it */
+ if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
+ !sdata->u.mgd.tdls_chan_switch_prohibited &&
+ params->ext_capab_len >= 4 &&
+ params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
+ set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
+
if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
sta->sta.uapsd_queues = params->uapsd_queues;
sta->sta.max_sp = params->max_sp;
@@ -3158,6 +3165,12 @@ __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
goto out;
}
+ ch_switch.timestamp = 0;
+ ch_switch.device_timestamp = 0;
+ ch_switch.block_tx = params->block_tx;
+ ch_switch.chandef = params->chandef;
+ ch_switch.count = params->count;
+
err = drv_pre_channel_switch(sdata, &ch_switch);
if (err)
goto out;
@@ -3175,12 +3188,6 @@ __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
goto out;
}
- ch_switch.timestamp = 0;
- ch_switch.device_timestamp = 0;
- ch_switch.block_tx = params->block_tx;
- ch_switch.chandef = params->chandef;
- ch_switch.count = params->count;
-
err = ieee80211_set_csa_beacon(sdata, params, &changed);
if (err) {
ieee80211_vif_unreserve_chanctx(sdata);
@@ -3195,6 +3202,9 @@ __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
ieee80211_stop_vif_queues(local, sdata,
IEEE80211_QUEUE_STOP_REASON_CSA);
+ cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
+ params->count);
+
if (changed) {
ieee80211_bss_info_change_notify(sdata, changed);
drv_channel_switch_beacon(sdata, &params->chandef);
@@ -3511,6 +3521,7 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
IEEE80211_TX_INTFL_NL80211_FRAME_TX;
+ info->band = band;
skb_set_queue_mapping(skb, IEEE80211_AC_VO);
skb->priority = 7;
@@ -3518,7 +3529,7 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
nullfunc->qos_ctrl = cpu_to_le16(7);
local_bh_disable();
- ieee80211_xmit(sdata, skb, band);
+ ieee80211_xmit(sdata, skb);
local_bh_enable();
rcu_read_unlock();
@@ -3741,6 +3752,8 @@ const struct cfg80211_ops mac80211_config_ops = {
.set_rekey_data = ieee80211_set_rekey_data,
.tdls_oper = ieee80211_tdls_oper,
.tdls_mgmt = ieee80211_tdls_mgmt,
+ .tdls_channel_switch = ieee80211_tdls_channel_switch,
+ .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
.probe_client = ieee80211_probe_client,
.set_noack_map = ieee80211_set_noack_map,
#ifdef CONFIG_PM
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index bafe4891622..94c70091bbd 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -74,7 +74,7 @@ static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
int res = scnprintf(buf, sizeof(buf),
- "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+ "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
TEST(PS_DRIVER), TEST(AUTHORIZED),
TEST(SHORT_PREAMBLE),
@@ -82,10 +82,11 @@ static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
TEST(WDS), TEST(CLEAR_PS_FILT),
TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
- TEST(TDLS_PEER_AUTH), TEST(4ADDR_EVENT),
- TEST(INSERTED), TEST(RATE_CONTROL),
- TEST(TOFFSET_KNOWN), TEST(MPSP_OWNER),
- TEST(MPSP_RECIPIENT));
+ TEST(TDLS_PEER_AUTH), TEST(TDLS_INITIATOR),
+ TEST(TDLS_CHAN_SWITCH), TEST(TDLS_OFF_CHANNEL),
+ TEST(4ADDR_EVENT), TEST(INSERTED),
+ TEST(RATE_CONTROL), TEST(TOFFSET_KNOWN),
+ TEST(MPSP_OWNER), TEST(MPSP_RECIPIENT));
#undef TEST
return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index 9759dd1f073..2ebc9ead969 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -380,23 +380,26 @@ static inline int drv_sched_scan_stop(struct ieee80211_local *local,
return ret;
}
-static inline void drv_sw_scan_start(struct ieee80211_local *local)
+static inline void drv_sw_scan_start(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ const u8 *mac_addr)
{
might_sleep();
- trace_drv_sw_scan_start(local);
+ trace_drv_sw_scan_start(local, sdata, mac_addr);
if (local->ops->sw_scan_start)
- local->ops->sw_scan_start(&local->hw);
+ local->ops->sw_scan_start(&local->hw, &sdata->vif, mac_addr);
trace_drv_return_void(local);
}
-static inline void drv_sw_scan_complete(struct ieee80211_local *local)
+static inline void drv_sw_scan_complete(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
{
might_sleep();
- trace_drv_sw_scan_complete(local);
+ trace_drv_sw_scan_complete(local, sdata);
if (local->ops->sw_scan_complete)
- local->ops->sw_scan_complete(&local->hw);
+ local->ops->sw_scan_complete(&local->hw, &sdata->vif);
trace_drv_return_void(local);
}
@@ -621,6 +624,21 @@ static inline void drv_sta_rc_update(struct ieee80211_local *local,
trace_drv_return_void(local);
}
+static inline void drv_sta_rate_tbl_update(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta *sta)
+{
+ sdata = get_bss_sdata(sdata);
+ if (!check_sdata_in_driver(sdata))
+ return;
+
+ trace_drv_sta_rate_tbl_update(local, sdata, sta);
+ if (local->ops->sta_rate_tbl_update)
+ local->ops->sta_rate_tbl_update(&local->hw, &sdata->vif, sta);
+
+ trace_drv_return_void(local);
+}
+
static inline int drv_conf_tx(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata, u16 ac,
const struct ieee80211_tx_queue_params *params)
@@ -1296,4 +1314,57 @@ static inline int drv_get_txpower(struct ieee80211_local *local,
return ret;
}
+static inline int
+drv_tdls_channel_switch(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta *sta, u8 oper_class,
+ struct cfg80211_chan_def *chandef,
+ struct sk_buff *tmpl_skb, u32 ch_sw_tm_ie)
+{
+ int ret;
+
+ might_sleep();
+ if (!check_sdata_in_driver(sdata))
+ return -EIO;
+
+ if (!local->ops->tdls_channel_switch)
+ return -EOPNOTSUPP;
+
+ trace_drv_tdls_channel_switch(local, sdata, sta, oper_class, chandef);
+ ret = local->ops->tdls_channel_switch(&local->hw, &sdata->vif, sta,
+ oper_class, chandef, tmpl_skb,
+ ch_sw_tm_ie);
+ trace_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline void
+drv_tdls_cancel_channel_switch(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta *sta)
+{
+ might_sleep();
+ if (!check_sdata_in_driver(sdata))
+ return;
+
+ if (!local->ops->tdls_cancel_channel_switch)
+ return;
+
+ trace_drv_tdls_cancel_channel_switch(local, sdata, sta);
+ local->ops->tdls_cancel_channel_switch(&local->hw, &sdata->vif, sta);
+ trace_drv_return_void(local);
+}
+
+static inline void
+drv_tdls_recv_channel_switch(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_tdls_ch_sw_params *params)
+{
+ trace_drv_tdls_recv_channel_switch(local, sdata, params);
+ if (local->ops->tdls_recv_channel_switch)
+ local->ops->tdls_recv_channel_switch(&local->hw, &sdata->vif,
+ params);
+ trace_drv_return_void(local);
+}
+
#endif /* __MAC80211_DRIVER_OPS */
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 842e0661fb5..cc6e964d983 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -525,8 +525,13 @@ struct ieee80211_if_managed {
struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
+ /* TDLS support */
u8 tdls_peer[ETH_ALEN] __aligned(2);
struct delayed_work tdls_peer_del_work;
+ struct sk_buff *orig_teardown_skb; /* The original teardown skb */
+ struct sk_buff *teardown_skb; /* A copy to send through the AP */
+ spinlock_t teardown_lock; /* To lock changing teardown_skb */
+ bool tdls_chan_switch_prohibited;
/* WMM-AC TSPEC support */
struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
@@ -988,6 +993,7 @@ enum sdata_queue_type {
IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
IEEE80211_SDATA_QUEUE_RX_AGG_START = 3,
IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4,
+ IEEE80211_SDATA_QUEUE_TDLS_CHSW = 5,
};
enum {
@@ -1005,6 +1011,7 @@ enum queue_stop_reason {
IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
IEEE80211_QUEUE_STOP_REASON_FLUSH,
IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
+ IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
IEEE80211_QUEUE_STOP_REASONS,
};
@@ -1231,7 +1238,7 @@ struct ieee80211_local {
unsigned long scanning;
struct cfg80211_ssid scan_ssid;
struct cfg80211_scan_request *int_scan_req;
- struct cfg80211_scan_request *scan_req;
+ struct cfg80211_scan_request __rcu *scan_req;
struct ieee80211_scan_request *hw_scan_req;
struct cfg80211_chan_def scan_chandef;
enum ieee80211_band hw_scan_band;
@@ -1241,7 +1248,8 @@ struct ieee80211_local {
struct work_struct sched_scan_stopped_work;
struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
- struct cfg80211_sched_scan_request *sched_scan_req;
+ struct cfg80211_sched_scan_request __rcu *sched_scan_req;
+ u8 scan_addr[ETH_ALEN];
unsigned long leave_oper_channel_time;
enum mac80211_scan_state next_scan_state;
@@ -1395,6 +1403,9 @@ struct ieee802_11_elems {
size_t total_len;
/* pointers to IEs */
+ const struct ieee80211_tdls_lnkie *lnk_id;
+ const struct ieee80211_ch_switch_timing *ch_sw_timing;
+ const u8 *ext_capab;
const u8 *ssid;
const u8 *supp_rates;
const u8 *ds_params;
@@ -1429,6 +1440,7 @@ struct ieee802_11_elems {
const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
/* length of them, respectively */
+ u8 ext_capab_len;
u8 ssid_len;
u8 supp_rates_len;
u8 tim_len;
@@ -1625,8 +1637,14 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
struct net_device *dev);
netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
struct net_device *dev);
+void __ieee80211_subif_start_xmit(struct sk_buff *skb,
+ struct net_device *dev,
+ u32 info_flags);
void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
struct sk_buff_head *skbs);
+struct sk_buff *
+ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, u32 info_flags);
/* HT */
void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
@@ -1753,8 +1771,7 @@ void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int ke
gfp_t gfp);
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
bool bss_notify);
-void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
- enum ieee80211_band band);
+void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, int tid,
@@ -1865,6 +1882,9 @@ void ieee80211_add_pending_skbs(struct ieee80211_local *local,
struct sk_buff_head *skbs);
void ieee80211_flush_queues(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata);
+void __ieee80211_flush_queues(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ unsigned int queues);
void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
u16 transaction, u16 auth_alg, u16 status,
@@ -1881,12 +1901,14 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
u8 bands_used, u32 *rate_masks,
struct cfg80211_chan_def *chandef);
struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
- u8 *dst, u32 ratemask,
+ const u8 *src, const u8 *dst,
+ u32 ratemask,
struct ieee80211_channel *chan,
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len,
bool directed);
-void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
+void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
+ const u8 *src, const u8 *dst,
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len,
u32 ratemask, bool directed, u32 tx_flags,
@@ -1992,6 +2014,14 @@ int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
const u8 *peer, enum nl80211_tdls_operation oper);
void ieee80211_tdls_peer_del_work(struct work_struct *wk);
+int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
+ const u8 *addr, u8 oper_class,
+ struct cfg80211_chan_def *chandef);
+void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
+ struct net_device *dev,
+ const u8 *addr);
+void ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb);
extern const struct ethtool_ops ieee80211_ethtool_ops;
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 9df26adb864..538fe4ef5c8 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1208,6 +1208,8 @@ static void ieee80211_iface_work(struct work_struct *work)
WLAN_BACK_RECIPIENT, 0,
false);
mutex_unlock(&local->sta_mtx);
+ } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_TDLS_CHSW) {
+ ieee80211_process_tdls_channel_switch(sdata, skb);
} else if (ieee80211_is_action(mgmt->frame_control) &&
mgmt->u.action.category == WLAN_CATEGORY_BACK) {
int len = skb->len;
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 282a4f36eb9..6ab99da38db 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -764,6 +764,12 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
local->hw.offchannel_tx_hw_queue >= local->hw.queues))
return -EINVAL;
+ if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
+ (!local->ops->tdls_channel_switch ||
+ !local->ops->tdls_cancel_channel_switch ||
+ !local->ops->tdls_recv_channel_switch))
+ return -EOPNOTSUPP;
+
#ifdef CONFIG_PM
if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
return -EINVAL;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 0d166e766da..ba06cd00337 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1049,6 +1049,8 @@ static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata)
sdata->csa_block_tx = false;
}
+ cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
+
sdata->vif.csa_active = false;
ifmgd->csa_waiting_bcn = false;
@@ -1205,6 +1207,9 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
IEEE80211_QUEUE_STOP_REASON_CSA);
mutex_unlock(&local->mtx);
+ cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
+ csa_ie.count);
+
if (local->ops->channel_switch) {
/* use driver's channel switch callback */
drv_channel_switch(local, sdata, &ch_switch);
@@ -2221,7 +2226,8 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
else
ssid_len = ssid[1];
- ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL,
+ ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL,
+ ssid + 2, ssid_len, NULL,
0, (u32) -1, true, 0,
ifmgd->associated->channel, false);
rcu_read_unlock();
@@ -2324,7 +2330,7 @@ struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
else
ssid_len = ssid[1];
- skb = ieee80211_build_probe_req(sdata, cbss->bssid,
+ skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
(u32) -1, cbss->channel,
ssid + 2, ssid_len,
NULL, 0, true);
@@ -2798,6 +2804,9 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
}
ifmgd->aid = aid;
+ ifmgd->tdls_chan_switch_prohibited =
+ elems.ext_capab && elems.ext_capab_len >= 5 &&
+ (elems.ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
/*
* Some APs are erroneously not including some information in their
@@ -3642,7 +3651,8 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
* Direct probe is sent to broadcast address as some APs
* will not answer to direct packet in unassociated state.
*/
- ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1],
+ ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL,
+ ssidie + 2, ssidie[1],
NULL, 0, (u32) -1, true, 0,
auth_data->bss->channel, false);
rcu_read_unlock();
@@ -3999,6 +4009,11 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
else
ifmgd->req_smps = IEEE80211_SMPS_OFF;
+
+ /* Setup TDLS data */
+ spin_lock_init(&ifmgd->teardown_lock);
+ ifmgd->teardown_skb = NULL;
+ ifmgd->orig_teardown_skb = NULL;
}
/* scan finished notification */
@@ -4861,6 +4876,13 @@ void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
}
if (ifmgd->auth_data)
ieee80211_destroy_auth_data(sdata, false);
+ spin_lock_bh(&ifmgd->teardown_lock);
+ if (ifmgd->teardown_skb) {
+ kfree_skb(ifmgd->teardown_skb);
+ ifmgd->teardown_skb = NULL;
+ ifmgd->orig_teardown_skb = NULL;
+ }
+ spin_unlock_bh(&ifmgd->teardown_lock);
del_timer_sync(&ifmgd->timer);
sdata_unlock(sdata);
}
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 6081329784d..08ab7d6d151 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -385,7 +385,7 @@ static void rate_idx_match_mask(struct ieee80211_tx_rate *rate,
*rate = alt_rate;
return;
}
- } else {
+ } else if (!(rate->flags & IEEE80211_TX_RC_VHT_MCS)) {
/* handle legacy rates */
if (rate_idx_match_legacy_mask(rate, sband->n_bitrates, mask))
return;
@@ -696,6 +696,7 @@ int rate_control_set_rates(struct ieee80211_hw *hw,
struct ieee80211_sta *pubsta,
struct ieee80211_sta_rates *rates)
{
+ struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
struct ieee80211_sta_rates *old;
/*
@@ -709,6 +710,8 @@ int rate_control_set_rates(struct ieee80211_hw *hw,
if (old)
kfree_rcu(old, rcu_head);
+ drv_sta_rate_tbl_update(hw_to_local(hw), sta->sdata, pubsta);
+
return 0;
}
EXPORT_SYMBOL(rate_control_set_rates);
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index c50fd94d2ae..62ff7cfb272 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -690,6 +690,9 @@ minstrel_aggr_check(struct ieee80211_sta *pubsta, struct sk_buff *skb)
struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
u16 tid;
+ if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO)
+ return;
+
if (unlikely(!ieee80211_is_data_qos(hdr->frame_control)))
return;
@@ -700,9 +703,6 @@ minstrel_aggr_check(struct ieee80211_sta *pubsta, struct sk_buff *skb)
if (likely(sta->ampdu_mlme.tid_tx[tid]))
return;
- if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO)
- return;
-
ieee80211_start_tx_ba_session(pubsta, tid, 5000);
}
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index a726bb16930..49c23bdf08b 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -39,7 +39,8 @@
* only useful for monitoring.
*/
static struct sk_buff *remove_monitor_info(struct ieee80211_local *local,
- struct sk_buff *skb)
+ struct sk_buff *skb,
+ unsigned int rtap_vendor_space)
{
if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS) {
if (likely(skb->len > FCS_LEN))
@@ -52,20 +53,25 @@ static struct sk_buff *remove_monitor_info(struct ieee80211_local *local,
}
}
+ __pskb_pull(skb, rtap_vendor_space);
+
return skb;
}
-static inline bool should_drop_frame(struct sk_buff *skb, int present_fcs_len)
+static inline bool should_drop_frame(struct sk_buff *skb, int present_fcs_len,
+ unsigned int rtap_vendor_space)
{
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
- struct ieee80211_hdr *hdr = (void *)skb->data;
+ struct ieee80211_hdr *hdr;
+
+ hdr = (void *)(skb->data + rtap_vendor_space);
if (status->flag & (RX_FLAG_FAILED_FCS_CRC |
RX_FLAG_FAILED_PLCP_CRC |
RX_FLAG_AMPDU_IS_ZEROLEN))
return true;
- if (unlikely(skb->len < 16 + present_fcs_len))
+ if (unlikely(skb->len < 16 + present_fcs_len + rtap_vendor_space))
return true;
if (ieee80211_is_ctl(hdr->frame_control) &&
@@ -77,8 +83,9 @@ static inline bool should_drop_frame(struct sk_buff *skb, int present_fcs_len)
}
static int
-ieee80211_rx_radiotap_space(struct ieee80211_local *local,
- struct ieee80211_rx_status *status)
+ieee80211_rx_radiotap_hdrlen(struct ieee80211_local *local,
+ struct ieee80211_rx_status *status,
+ struct sk_buff *skb)
{
int len;
@@ -121,6 +128,21 @@ ieee80211_rx_radiotap_space(struct ieee80211_local *local,
len += 2 * hweight8(status->chains);
}
+ if (status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) {
+ struct ieee80211_vendor_radiotap *rtap = (void *)skb->data;
+
+ /* vendor presence bitmap */
+ len += 4;
+ /* alignment for fixed 6-byte vendor data header */
+ len = ALIGN(len, 2);
+ /* vendor data header */
+ len += 6;
+ if (WARN_ON(rtap->align == 0))
+ rtap->align = 1;
+ len = ALIGN(len, rtap->align);
+ len += rtap->len + rtap->pad;
+ }
+
return len;
}
@@ -144,13 +166,20 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
u16 channel_flags = 0;
int mpdulen, chain;
unsigned long chains = status->chains;
+ struct ieee80211_vendor_radiotap rtap = {};
+
+ if (status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) {
+ rtap = *(struct ieee80211_vendor_radiotap *)skb->data;
+ /* rtap.len and rtap.pad are undone immediately */
+ skb_pull(skb, sizeof(rtap) + rtap.len + rtap.pad);
+ }
mpdulen = skb->len;
if (!(has_fcs && (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)))
mpdulen += FCS_LEN;
rthdr = (struct ieee80211_radiotap_header *)skb_push(skb, rtap_len);
- memset(rthdr, 0, rtap_len);
+ memset(rthdr, 0, rtap_len - rtap.len - rtap.pad);
it_present = &rthdr->it_present;
/* radiotap header, set always present flags */
@@ -172,6 +201,14 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
BIT(IEEE80211_RADIOTAP_DBM_ANTSIGNAL);
}
+ if (status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) {
+ it_present_val |= BIT(IEEE80211_RADIOTAP_VENDOR_NAMESPACE) |
+ BIT(IEEE80211_RADIOTAP_EXT);
+ put_unaligned_le32(it_present_val, it_present);
+ it_present++;
+ it_present_val = rtap.present;
+ }
+
put_unaligned_le32(it_present_val, it_present);
pos = (void *)(it_present + 1);
@@ -366,6 +403,22 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
*pos++ = status->chain_signal[chain];
*pos++ = chain;
}
+
+ if (status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) {
+ /* ensure 2 byte alignment for the vendor field as required */
+ if ((pos - (u8 *)rthdr) & 1)
+ *pos++ = 0;
+ *pos++ = rtap.oui[0];
+ *pos++ = rtap.oui[1];
+ *pos++ = rtap.oui[2];
+ *pos++ = rtap.subns;
+ put_unaligned_le16(rtap.len, pos);
+ pos += 2;
+ /* align the actual payload as requested */
+ while ((pos - (u8 *)rthdr) & (rtap.align - 1))
+ *pos++ = 0;
+ /* data (and possible padding) already follows */
+ }
}
/*
@@ -379,10 +432,17 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
{
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(origskb);
struct ieee80211_sub_if_data *sdata;
- int needed_headroom;
+ int rt_hdrlen, needed_headroom;
struct sk_buff *skb, *skb2;
struct net_device *prev_dev = NULL;
int present_fcs_len = 0;
+ unsigned int rtap_vendor_space = 0;
+
+ if (unlikely(status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA)) {
+ struct ieee80211_vendor_radiotap *rtap = (void *)origskb->data;
+
+ rtap_vendor_space = sizeof(*rtap) + rtap->len + rtap->pad;
+ }
/*
* First, we may need to make a copy of the skb because
@@ -396,25 +456,27 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
present_fcs_len = FCS_LEN;
- /* ensure hdr->frame_control is in skb head */
- if (!pskb_may_pull(origskb, 2)) {
+ /* ensure hdr->frame_control and vendor radiotap data are in skb head */
+ if (!pskb_may_pull(origskb, 2 + rtap_vendor_space)) {
dev_kfree_skb(origskb);
return NULL;
}
if (!local->monitors) {
- if (should_drop_frame(origskb, present_fcs_len)) {
+ if (should_drop_frame(origskb, present_fcs_len,
+ rtap_vendor_space)) {
dev_kfree_skb(origskb);
return NULL;
}
- return remove_monitor_info(local, origskb);
+ return remove_monitor_info(local, origskb, rtap_vendor_space);
}
/* room for the radiotap header based on driver features */
- needed_headroom = ieee80211_rx_radiotap_space(local, status);
+ rt_hdrlen = ieee80211_rx_radiotap_hdrlen(local, status, origskb);
+ needed_headroom = rt_hdrlen - rtap_vendor_space;
- if (should_drop_frame(origskb, present_fcs_len)) {
+ if (should_drop_frame(origskb, present_fcs_len, rtap_vendor_space)) {
/* only need to expand headroom if necessary */
skb = origskb;
origskb = NULL;
@@ -438,15 +500,15 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
*/
skb = skb_copy_expand(origskb, needed_headroom, 0, GFP_ATOMIC);
- origskb = remove_monitor_info(local, origskb);
+ origskb = remove_monitor_info(local, origskb,
+ rtap_vendor_space);
if (!skb)
return origskb;
}
/* prepend radiotap information */
- ieee80211_add_rx_radiotap_header(local, skb, rate, needed_headroom,
- true);
+ ieee80211_add_rx_radiotap_header(local, skb, rate, rt_hdrlen, true);
skb_reset_mac_header(skb);
skb->ip_summed = CHECKSUM_UNNECESSARY;
@@ -985,7 +1047,7 @@ static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx,
}
static ieee80211_rx_result debug_noinline
-ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
+ieee80211_rx_h_check_dup(struct ieee80211_rx_data *rx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);
@@ -994,10 +1056,16 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
* Drop duplicate 802.11 retransmissions
* (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
*/
- if (rx->skb->len >= 24 && rx->sta &&
- !ieee80211_is_ctl(hdr->frame_control) &&
- !ieee80211_is_qos_nullfunc(hdr->frame_control) &&
- !is_multicast_ether_addr(hdr->addr1)) {
+
+ if (rx->skb->len < 24)
+ return RX_CONTINUE;
+
+ if (ieee80211_is_ctl(hdr->frame_control) ||
+ ieee80211_is_qos_nullfunc(hdr->frame_control) ||
+ is_multicast_ether_addr(hdr->addr1))
+ return RX_CONTINUE;
+
+ if (rx->sta) {
if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
rx->sta->last_seq_ctrl[rx->seqno_idx] ==
hdr->seq_ctrl)) {
@@ -1011,6 +1079,14 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
}
}
+ return RX_CONTINUE;
+}
+
+static ieee80211_rx_result debug_noinline
+ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
+
if (unlikely(rx->skb->len < 16)) {
I802_DEBUG_INC(rx->local->rx_handlers_drop_short);
return RX_DROP_MONITOR;
@@ -2257,6 +2333,27 @@ ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
if (!ieee80211_frame_allowed(rx, fc))
return RX_DROP_MONITOR;
+ /* directly handle TDLS channel switch requests/responses */
+ if (unlikely(((struct ethhdr *)rx->skb->data)->h_proto ==
+ cpu_to_be16(ETH_P_TDLS))) {
+ struct ieee80211_tdls_data *tf = (void *)rx->skb->data;
+
+ if (pskb_may_pull(rx->skb,
+ offsetof(struct ieee80211_tdls_data, u)) &&
+ tf->payload_type == WLAN_TDLS_SNAP_RFTYPE &&
+ tf->category == WLAN_CATEGORY_TDLS &&
+ (tf->action_code == WLAN_TDLS_CHANNEL_SWITCH_REQUEST ||
+ tf->action_code == WLAN_TDLS_CHANNEL_SWITCH_RESPONSE)) {
+ rx->skb->pkt_type = IEEE80211_SDATA_QUEUE_TDLS_CHSW;
+ skb_queue_tail(&sdata->skb_queue, rx->skb);
+ ieee80211_queue_work(&rx->local->hw, &sdata->work);
+ if (rx->sta)
+ rx->sta->rx_packets++;
+
+ return RX_QUEUED;
+ }
+ }
+
if (rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
unlikely(port_control) && sdata->bss) {
sdata = container_of(sdata->bss, struct ieee80211_sub_if_data,
@@ -2892,8 +2989,10 @@ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx,
if (!local->cooked_mntrs)
goto out_free_skb;
+ /* vendor data is long removed here */
+ status->flag &= ~RX_FLAG_RADIOTAP_VENDOR_DATA;
/* room for the radiotap header based on driver features */
- needed_headroom = ieee80211_rx_radiotap_space(local, status);
+ needed_headroom = ieee80211_rx_radiotap_hdrlen(local, status, skb);
if (skb_headroom(skb) < needed_headroom &&
pskb_expand_head(skb, needed_headroom, 0, GFP_ATOMIC))
@@ -3046,6 +3145,7 @@ static void ieee80211_invoke_rx_handlers(struct ieee80211_rx_data *rx)
goto rxh_next; \
} while (0);
+ CALL_RXH(ieee80211_rx_h_check_dup)
CALL_RXH(ieee80211_rx_h_check)
ieee80211_rx_reorder_ampdu(rx, &reorder_release);
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index af0d094b2f2..ae842678b62 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -184,9 +184,21 @@ void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb)
return;
if (ieee80211_is_probe_resp(mgmt->frame_control)) {
- /* ignore ProbeResp to foreign address */
- if ((!sdata1 || !ether_addr_equal(mgmt->da, sdata1->vif.addr)) &&
- (!sdata2 || !ether_addr_equal(mgmt->da, sdata2->vif.addr)))
+ struct cfg80211_scan_request *scan_req;
+ struct cfg80211_sched_scan_request *sched_scan_req;
+
+ scan_req = rcu_dereference(local->scan_req);
+ sched_scan_req = rcu_dereference(local->sched_scan_req);
+
+ /* ignore ProbeResp to foreign address unless scanning
+ * with randomised address
+ */
+ if (!(sdata1 &&
+ (ether_addr_equal(mgmt->da, sdata1->vif.addr) ||
+ scan_req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)) &&
+ !(sdata2 &&
+ (ether_addr_equal(mgmt->da, sdata2->vif.addr) ||
+ sched_scan_req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)))
return;
elements = mgmt->u.probe_resp.variable;
@@ -234,11 +246,14 @@ ieee80211_prepare_scan_chandef(struct cfg80211_chan_def *chandef,
/* return false if no more work */
static bool ieee80211_prep_hw_scan(struct ieee80211_local *local)
{
- struct cfg80211_scan_request *req = local->scan_req;
+ struct cfg80211_scan_request *req;
struct cfg80211_chan_def chandef;
u8 bands_used = 0;
int i, ielen, n_chans;
+ req = rcu_dereference_protected(local->scan_req,
+ lockdep_is_held(&local->mtx));
+
if (test_bit(SCAN_HW_CANCELLED, &local->scanning))
return false;
@@ -281,6 +296,9 @@ static bool ieee80211_prep_hw_scan(struct ieee80211_local *local)
bands_used, req->rates, &chandef);
local->hw_scan_req->req.ie_len = ielen;
local->hw_scan_req->req.no_cck = req->no_cck;
+ ether_addr_copy(local->hw_scan_req->req.mac_addr, req->mac_addr);
+ ether_addr_copy(local->hw_scan_req->req.mac_addr_mask,
+ req->mac_addr_mask);
return true;
}
@@ -290,6 +308,8 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
struct ieee80211_local *local = hw_to_local(hw);
bool hw_scan = local->ops->hw_scan;
bool was_scanning = local->scanning;
+ struct cfg80211_scan_request *scan_req;
+ struct ieee80211_sub_if_data *scan_sdata;
lockdep_assert_held(&local->mtx);
@@ -322,9 +342,15 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
kfree(local->hw_scan_req);
local->hw_scan_req = NULL;
- if (local->scan_req != local->int_scan_req)
- cfg80211_scan_done(local->scan_req, aborted);
- local->scan_req = NULL;
+ scan_req = rcu_dereference_protected(local->scan_req,
+ lockdep_is_held(&local->mtx));
+
+ if (scan_req != local->int_scan_req)
+ cfg80211_scan_done(scan_req, aborted);
+ RCU_INIT_POINTER(local->scan_req, NULL);
+
+ scan_sdata = rcu_dereference_protected(local->scan_sdata,
+ lockdep_is_held(&local->mtx));
RCU_INIT_POINTER(local->scan_sdata, NULL);
local->scanning = 0;
@@ -335,7 +361,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
if (!hw_scan) {
ieee80211_configure_filter(local);
- drv_sw_scan_complete(local);
+ drv_sw_scan_complete(local, scan_sdata);
ieee80211_offchannel_return(local);
}
@@ -361,7 +387,8 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
}
EXPORT_SYMBOL(ieee80211_scan_completed);
-static int ieee80211_start_sw_scan(struct ieee80211_local *local)
+static int ieee80211_start_sw_scan(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
{
/* Software scan is not supported in multi-channel cases */
if (local->use_chanctx)
@@ -380,7 +407,7 @@ static int ieee80211_start_sw_scan(struct ieee80211_local *local)
* nullfunc frames and probe requests will be dropped in
* ieee80211_tx_h_check_assoc().
*/
- drv_sw_scan_start(local);
+ drv_sw_scan_start(local, sdata, local->scan_addr);
local->leave_oper_channel_time = jiffies;
local->next_scan_state = SCAN_DECISION;
@@ -440,23 +467,26 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,
{
int i;
struct ieee80211_sub_if_data *sdata;
+ struct cfg80211_scan_request *scan_req;
enum ieee80211_band band = local->hw.conf.chandef.chan->band;
u32 tx_flags;
+ scan_req = rcu_dereference_protected(local->scan_req,
+ lockdep_is_held(&local->mtx));
+
tx_flags = IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
- if (local->scan_req->no_cck)
+ if (scan_req->no_cck)
tx_flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
sdata = rcu_dereference_protected(local->scan_sdata,
lockdep_is_held(&local->mtx));
- for (i = 0; i < local->scan_req->n_ssids; i++)
+ for (i = 0; i < scan_req->n_ssids; i++)
ieee80211_send_probe_req(
- sdata, NULL,
- local->scan_req->ssids[i].ssid,
- local->scan_req->ssids[i].ssid_len,
- local->scan_req->ie, local->scan_req->ie_len,
- local->scan_req->rates[band], false,
+ sdata, local->scan_addr, NULL,
+ scan_req->ssids[i].ssid, scan_req->ssids[i].ssid_len,
+ scan_req->ie, scan_req->ie_len,
+ scan_req->rates[band], false,
tx_flags, local->hw.conf.chandef.chan, true);
/*
@@ -480,7 +510,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
if (!ieee80211_can_scan(local, sdata)) {
/* wait for the work to finish/time out */
- local->scan_req = req;
+ rcu_assign_pointer(local->scan_req, req);
rcu_assign_pointer(local->scan_sdata, sdata);
return 0;
}
@@ -530,9 +560,16 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
*/
}
- local->scan_req = req;
+ rcu_assign_pointer(local->scan_req, req);
rcu_assign_pointer(local->scan_sdata, sdata);
+ if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
+ get_random_mask_addr(local->scan_addr,
+ req->mac_addr,
+ req->mac_addr_mask);
+ else
+ memcpy(local->scan_addr, sdata->vif.addr, ETH_ALEN);
+
if (local->ops->hw_scan) {
__set_bit(SCAN_HW_SCANNING, &local->scanning);
} else if ((req->n_channels == 1) &&
@@ -549,7 +586,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
/* Notify driver scan is starting, keep order of operations
* same as normal software scan, in case that matters. */
- drv_sw_scan_start(local);
+ drv_sw_scan_start(local, sdata, local->scan_addr);
ieee80211_configure_filter(local); /* accept probe-responses */
@@ -558,7 +595,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
if ((req->channels[0]->flags &
IEEE80211_CHAN_NO_IR) ||
- !local->scan_req->n_ssids) {
+ !req->n_ssids) {
next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
} else {
ieee80211_scan_state_send_probe(local, &next_delay);
@@ -579,8 +616,9 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
if (local->ops->hw_scan) {
WARN_ON(!ieee80211_prep_hw_scan(local));
rc = drv_hw_scan(local, sdata, local->hw_scan_req);
- } else
- rc = ieee80211_start_sw_scan(local);
+ } else {
+ rc = ieee80211_start_sw_scan(local, sdata);
+ }
if (rc) {
kfree(local->hw_scan_req);
@@ -617,6 +655,7 @@ static void ieee80211_scan_state_decision(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata;
struct ieee80211_channel *next_chan;
enum mac80211_scan_state next_scan_state;
+ struct cfg80211_scan_request *scan_req;
/*
* check if at least one STA interface is associated,
@@ -641,7 +680,10 @@ static void ieee80211_scan_state_decision(struct ieee80211_local *local,
}
mutex_unlock(&local->iflist_mtx);
- next_chan = local->scan_req->channels[local->scan_channel_idx];
+ scan_req = rcu_dereference_protected(local->scan_req,
+ lockdep_is_held(&local->mtx));
+
+ next_chan = scan_req->channels[local->scan_channel_idx];
/*
* we're currently scanning a different channel, let's
@@ -656,7 +698,7 @@ static void ieee80211_scan_state_decision(struct ieee80211_local *local,
local->leave_oper_channel_time + HZ / 8);
if (associated && !tx_empty) {
- if (local->scan_req->flags & NL80211_SCAN_FLAG_LOW_PRIORITY)
+ if (scan_req->flags & NL80211_SCAN_FLAG_LOW_PRIORITY)
next_scan_state = SCAN_ABORT;
else
next_scan_state = SCAN_SUSPEND;
@@ -677,14 +719,18 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,
int skip;
struct ieee80211_channel *chan;
enum nl80211_bss_scan_width oper_scan_width;
+ struct cfg80211_scan_request *scan_req;
+
+ scan_req = rcu_dereference_protected(local->scan_req,
+ lockdep_is_held(&local->mtx));
skip = 0;
- chan = local->scan_req->channels[local->scan_channel_idx];
+ chan = scan_req->channels[local->scan_channel_idx];
local->scan_chandef.chan = chan;
local->scan_chandef.center_freq1 = chan->center_freq;
local->scan_chandef.center_freq2 = 0;
- switch (local->scan_req->scan_width) {
+ switch (scan_req->scan_width) {
case NL80211_BSS_CHAN_WIDTH_5:
local->scan_chandef.width = NL80211_CHAN_WIDTH_5;
break;
@@ -698,7 +744,7 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,
oper_scan_width = cfg80211_chandef_to_scan_width(
&local->_oper_chandef);
if (chan == local->_oper_chandef.chan &&
- oper_scan_width == local->scan_req->scan_width)
+ oper_scan_width == scan_req->scan_width)
local->scan_chandef = local->_oper_chandef;
else
local->scan_chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
@@ -727,8 +773,7 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,
*
* In any case, it is not necessary for a passive scan.
*/
- if (chan->flags & IEEE80211_CHAN_NO_IR ||
- !local->scan_req->n_ssids) {
+ if (chan->flags & IEEE80211_CHAN_NO_IR || !scan_req->n_ssids) {
*next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
local->next_scan_state = SCAN_DECISION;
return;
@@ -777,6 +822,7 @@ 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;
+ struct cfg80211_scan_request *scan_req;
unsigned long next_delay = 0;
bool aborted;
@@ -784,6 +830,8 @@ void ieee80211_scan_work(struct work_struct *work)
sdata = rcu_dereference_protected(local->scan_sdata,
lockdep_is_held(&local->mtx));
+ scan_req = rcu_dereference_protected(local->scan_req,
+ lockdep_is_held(&local->mtx));
/* When scanning on-channel, the first-callback means completed. */
if (test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning)) {
@@ -796,20 +844,19 @@ void ieee80211_scan_work(struct work_struct *work)
goto out_complete;
}
- if (!sdata || !local->scan_req)
+ if (!sdata || !scan_req)
goto out;
- if (local->scan_req && !local->scanning) {
- struct cfg80211_scan_request *req = local->scan_req;
+ if (!local->scanning) {
int rc;
- local->scan_req = NULL;
+ RCU_INIT_POINTER(local->scan_req, NULL);
RCU_INIT_POINTER(local->scan_sdata, NULL);
- rc = __ieee80211_start_scan(sdata, req);
+ rc = __ieee80211_start_scan(sdata, scan_req);
if (rc) {
/* need to complete scan in cfg80211 */
- local->scan_req = req;
+ rcu_assign_pointer(local->scan_req, scan_req);
aborted = true;
goto out_complete;
} else
@@ -829,7 +876,7 @@ void ieee80211_scan_work(struct work_struct *work)
switch (local->next_scan_state) {
case SCAN_DECISION:
/* if no more bands/channels left, complete scan */
- if (local->scan_channel_idx >= local->scan_req->n_channels) {
+ if (local->scan_channel_idx >= scan_req->n_channels) {
aborted = false;
goto out_complete;
}
@@ -1043,7 +1090,7 @@ int __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
ret = drv_sched_scan_start(local, sdata, req, &sched_scan_ies);
if (ret == 0) {
rcu_assign_pointer(local->sched_scan_sdata, sdata);
- local->sched_scan_req = req;
+ rcu_assign_pointer(local->sched_scan_req, req);
}
kfree(ie);
@@ -1052,7 +1099,7 @@ out:
if (ret) {
/* Clean in case of failure after HW restart or upon resume. */
RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
- local->sched_scan_req = NULL;
+ RCU_INIT_POINTER(local->sched_scan_req, NULL);
}
return ret;
@@ -1090,7 +1137,7 @@ int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata)
}
/* We don't want to restart sched scan anymore. */
- local->sched_scan_req = NULL;
+ RCU_INIT_POINTER(local->sched_scan_req, NULL);
if (rcu_access_pointer(local->sched_scan_sdata)) {
ret = drv_sched_scan_stop(local, sdata);
@@ -1125,7 +1172,7 @@ void ieee80211_sched_scan_end(struct ieee80211_local *local)
RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
/* If sched scan was aborted by the driver. */
- local->sched_scan_req = NULL;
+ RCU_INIT_POINTER(local->sched_scan_req, NULL);
mutex_unlock(&local->mtx);
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index adc25371b17..a42f5b2b024 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -351,6 +351,9 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
sta->sta_state = IEEE80211_STA_NONE;
+ /* Mark TID as unreserved */
+ sta->reserved_tid = IEEE80211_TID_UNRESERVED;
+
ktime_get_ts(&uptime);
sta->last_connected = uptime.tv_sec;
ewma_init(&sta->avg_signal, 1024, 8);
@@ -847,6 +850,15 @@ static int __must_check __sta_info_destroy_part1(struct sta_info *sta)
if (WARN_ON(ret))
return ret;
+ /*
+ * for TDLS peers, make sure to return to the base channel before
+ * removal.
+ */
+ if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) {
+ drv_tdls_cancel_channel_switch(local, sdata, &sta->sta);
+ clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL);
+ }
+
list_del_rcu(&sta->list);
drv_sta_pre_rcu_remove(local, sta->sdata, sta);
@@ -1249,7 +1261,8 @@ static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata,
return;
}
- ieee80211_xmit(sdata, skb, chanctx_conf->def.chan->band);
+ info->band = chanctx_conf->def.chan->band;
+ ieee80211_xmit(sdata, skb);
rcu_read_unlock();
}
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index bcda2ac7d84..4f052bb2a5a 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -49,6 +49,9 @@
* packets. This means the link is enabled.
* @WLAN_STA_TDLS_INITIATOR: We are the initiator of the TDLS link with this
* station.
+ * @WLAN_STA_TDLS_CHAN_SWITCH: This TDLS peer supports TDLS channel-switching
+ * @WLAN_STA_TDLS_OFF_CHANNEL: The local STA is currently off-channel with this
+ * TDLS peer
* @WLAN_STA_UAPSD: Station requested unscheduled SP while driver was
* keeping station in power-save mode, reply when the driver
* unblocks the station.
@@ -78,6 +81,8 @@ enum ieee80211_sta_info_flags {
WLAN_STA_TDLS_PEER,
WLAN_STA_TDLS_PEER_AUTH,
WLAN_STA_TDLS_INITIATOR,
+ WLAN_STA_TDLS_CHAN_SWITCH,
+ WLAN_STA_TDLS_OFF_CHANNEL,
WLAN_STA_UAPSD,
WLAN_STA_SP,
WLAN_STA_4ADDR_EVENT,
@@ -249,6 +254,9 @@ struct ieee80211_tx_latency_stat {
u32 bin_count;
};
+/* Value to indicate no TID reservation */
+#define IEEE80211_TID_UNRESERVED 0xff
+
/**
* struct sta_info - STA information
*
@@ -337,6 +345,7 @@ struct ieee80211_tx_latency_stat {
* AP only.
* @cipher_scheme: optional cipher scheme for this station
* @last_tdls_pkt_time: holds the time in jiffies of last TDLS pkt ACKed
+ * @reserved_tid: reserved TID (if any, otherwise IEEE80211_TID_UNRESERVED)
*/
struct sta_info {
/* General information, mostly static */
@@ -454,6 +463,8 @@ struct sta_info {
/* TDLS timeout data */
unsigned long last_tdls_pkt_time;
+ u8 reserved_tid;
+
/* keep last! */
struct ieee80211_sta sta;
};
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 9612d89fad5..71de2d3866c 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -390,6 +390,46 @@ ieee80211_add_tx_radiotap_header(struct ieee80211_local *local,
}
}
+/*
+ * Handles the tx for TDLS teardown frames.
+ * If the frame wasn't ACKed by the peer - it will be re-sent through the AP
+ */
+static void ieee80211_tdls_td_tx_handle(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, u32 flags)
+{
+ struct sk_buff *teardown_skb;
+ struct sk_buff *orig_teardown_skb;
+ bool is_teardown = false;
+
+ /* Get the teardown data we need and free the lock */
+ spin_lock(&sdata->u.mgd.teardown_lock);
+ teardown_skb = sdata->u.mgd.teardown_skb;
+ orig_teardown_skb = sdata->u.mgd.orig_teardown_skb;
+ if ((skb == orig_teardown_skb) && teardown_skb) {
+ sdata->u.mgd.teardown_skb = NULL;
+ sdata->u.mgd.orig_teardown_skb = NULL;
+ is_teardown = true;
+ }
+ spin_unlock(&sdata->u.mgd.teardown_lock);
+
+ if (is_teardown) {
+ /* This mechanism relies on being able to get ACKs */
+ WARN_ON(!(local->hw.flags &
+ IEEE80211_HW_REPORTS_TX_ACK_STATUS));
+
+ /* Check if peer has ACKed */
+ if (flags & IEEE80211_TX_STAT_ACK) {
+ dev_kfree_skb_any(teardown_skb);
+ } else {
+ tdls_dbg(sdata,
+ "TDLS Resending teardown through AP\n");
+
+ ieee80211_subif_start_xmit(teardown_skb, skb->dev);
+ }
+ }
+}
+
static void ieee80211_report_used_skb(struct ieee80211_local *local,
struct sk_buff *skb, bool dropped)
{
@@ -426,8 +466,19 @@ static void ieee80211_report_used_skb(struct ieee80211_local *local,
if (!sdata) {
skb->dev = NULL;
} else if (info->flags & IEEE80211_TX_INTFL_MLME_CONN_TX) {
- ieee80211_mgd_conn_tx_status(sdata, hdr->frame_control,
- acked);
+ unsigned int hdr_size =
+ ieee80211_hdrlen(hdr->frame_control);
+
+ /* Check to see if packet is a TDLS teardown packet */
+ if (ieee80211_is_data(hdr->frame_control) &&
+ (ieee80211_get_tdls_action(skb, hdr_size) ==
+ WLAN_TDLS_TEARDOWN))
+ ieee80211_tdls_td_tx_handle(local, sdata, skb,
+ info->flags);
+ else
+ ieee80211_mgd_conn_tx_status(sdata,
+ hdr->frame_control,
+ acked);
} else if (ieee80211_is_nullfunc(hdr->frame_control) ||
ieee80211_is_qos_nullfunc(hdr->frame_control)) {
cfg80211_probe_status(sdata->dev, hdr->addr1,
diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c
index b4f368e2cb3..55ddd77b865 100644
--- a/net/mac80211/tdls.c
+++ b/net/mac80211/tdls.c
@@ -35,19 +35,101 @@ void ieee80211_tdls_peer_del_work(struct work_struct *wk)
mutex_unlock(&local->mtx);
}
-static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
+static void ieee80211_tdls_add_ext_capab(struct ieee80211_local *local,
+ struct sk_buff *skb)
{
u8 *pos = (void *)skb_put(skb, 7);
+ bool chan_switch = local->hw.wiphy->features &
+ NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
*pos++ = WLAN_EID_EXT_CAPABILITY;
*pos++ = 5; /* len */
*pos++ = 0x0;
*pos++ = 0x0;
*pos++ = 0x0;
- *pos++ = 0x0;
+ *pos++ = chan_switch ? WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH : 0;
*pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
}
+static u8
+ieee80211_tdls_add_subband(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, u16 start, u16 end,
+ u16 spacing)
+{
+ u8 subband_cnt = 0, ch_cnt = 0;
+ struct ieee80211_channel *ch;
+ struct cfg80211_chan_def chandef;
+ int i, subband_start;
+
+ for (i = start; i <= end; i += spacing) {
+ if (!ch_cnt)
+ subband_start = i;
+
+ ch = ieee80211_get_channel(sdata->local->hw.wiphy, i);
+ if (ch) {
+ /* we will be active on the channel */
+ u32 flags = IEEE80211_CHAN_DISABLED |
+ IEEE80211_CHAN_NO_IR;
+ cfg80211_chandef_create(&chandef, ch,
+ NL80211_CHAN_HT20);
+ if (cfg80211_chandef_usable(sdata->local->hw.wiphy,
+ &chandef, flags)) {
+ ch_cnt++;
+ continue;
+ }
+ }
+
+ if (ch_cnt) {
+ u8 *pos = skb_put(skb, 2);
+ *pos++ = ieee80211_frequency_to_channel(subband_start);
+ *pos++ = ch_cnt;
+
+ subband_cnt++;
+ ch_cnt = 0;
+ }
+ }
+
+ return subband_cnt;
+}
+
+static void
+ieee80211_tdls_add_supp_channels(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb)
+{
+ /*
+ * Add possible channels for TDLS. These are channels that are allowed
+ * to be active.
+ */
+ u8 subband_cnt;
+ u8 *pos = skb_put(skb, 2);
+
+ *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
+
+ /*
+ * 5GHz and 2GHz channels numbers can overlap. Ignore this for now, as
+ * this doesn't happen in real world scenarios.
+ */
+
+ /* 2GHz, with 5MHz spacing */
+ subband_cnt = ieee80211_tdls_add_subband(sdata, skb, 2412, 2472, 5);
+
+ /* 5GHz, with 20MHz spacing */
+ subband_cnt += ieee80211_tdls_add_subband(sdata, skb, 5000, 5825, 20);
+
+ /* length */
+ *pos = 2 * subband_cnt;
+}
+
+static void ieee80211_tdls_add_bss_coex_ie(struct sk_buff *skb)
+{
+ u8 *pos = (void *)skb_put(skb, 3);
+
+ *pos++ = WLAN_EID_BSS_COEX_2040;
+ *pos++ = 1; /* len */
+
+ *pos++ = WLAN_BSS_COEX_INFORMATION_REQUEST;
+}
+
static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata,
u16 status_code)
{
@@ -190,6 +272,7 @@ ieee80211_tdls_add_setup_start_ies(struct ieee80211_sub_if_data *sdata,
ieee80211_add_srates_ie(sdata, skb, false, band);
ieee80211_add_ext_srates_ie(sdata, skb, false, band);
+ ieee80211_tdls_add_supp_channels(sdata, skb);
/* add any custom IEs that go before Extended Capabilities */
if (extra_ies_len) {
@@ -209,7 +292,7 @@ ieee80211_tdls_add_setup_start_ies(struct ieee80211_sub_if_data *sdata,
offset = noffset;
}
- ieee80211_tdls_add_ext_capab(skb);
+ ieee80211_tdls_add_ext_capab(local, skb);
/* add the QoS element if we support it */
if (local->hw.queues >= IEEE80211_NUM_ACS &&
@@ -271,6 +354,10 @@ ieee80211_tdls_add_setup_start_ies(struct ieee80211_sub_if_data *sdata,
rcu_read_unlock();
+ if (ht_cap.ht_supported &&
+ (ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
+ ieee80211_tdls_add_bss_coex_ie(skb);
+
/* add any remaining IEs */
if (extra_ies_len) {
noffset = extra_ies_len;
@@ -362,11 +449,68 @@ ieee80211_tdls_add_setup_cfm_ies(struct ieee80211_sub_if_data *sdata,
ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
}
+static void
+ieee80211_tdls_add_chan_switch_req_ies(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, const u8 *peer,
+ bool initiator, const u8 *extra_ies,
+ size_t extra_ies_len, u8 oper_class,
+ struct cfg80211_chan_def *chandef)
+{
+ struct ieee80211_tdls_data *tf;
+ size_t offset = 0, noffset;
+ u8 *pos;
+
+ if (WARN_ON_ONCE(!chandef))
+ return;
+
+ tf = (void *)skb->data;
+ tf->u.chan_switch_req.target_channel =
+ ieee80211_frequency_to_channel(chandef->chan->center_freq);
+ tf->u.chan_switch_req.oper_class = oper_class;
+
+ if (extra_ies_len) {
+ static const u8 before_lnkie[] = {
+ WLAN_EID_SECONDARY_CHANNEL_OFFSET,
+ };
+ noffset = ieee80211_ie_split(extra_ies, extra_ies_len,
+ before_lnkie,
+ ARRAY_SIZE(before_lnkie),
+ offset);
+ pos = skb_put(skb, noffset - offset);
+ memcpy(pos, extra_ies + offset, noffset - offset);
+ offset = noffset;
+ }
+
+ ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
+
+ /* add any remaining IEs */
+ if (extra_ies_len) {
+ noffset = extra_ies_len;
+ pos = skb_put(skb, noffset - offset);
+ memcpy(pos, extra_ies + offset, noffset - offset);
+ }
+}
+
+static void
+ieee80211_tdls_add_chan_switch_resp_ies(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, const u8 *peer,
+ u16 status_code, bool initiator,
+ const u8 *extra_ies,
+ size_t extra_ies_len)
+{
+ if (status_code == 0)
+ ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
+
+ if (extra_ies_len)
+ memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
+}
+
static void ieee80211_tdls_add_ies(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, const u8 *peer,
u8 action_code, u16 status_code,
bool initiator, const u8 *extra_ies,
- size_t extra_ies_len)
+ size_t extra_ies_len, u8 oper_class,
+ struct cfg80211_chan_def *chandef)
{
switch (action_code) {
case WLAN_TDLS_SETUP_REQUEST:
@@ -393,6 +537,18 @@ static void ieee80211_tdls_add_ies(struct ieee80211_sub_if_data *sdata,
if (status_code == 0 || action_code == WLAN_TDLS_TEARDOWN)
ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
break;
+ case WLAN_TDLS_CHANNEL_SWITCH_REQUEST:
+ ieee80211_tdls_add_chan_switch_req_ies(sdata, skb, peer,
+ initiator, extra_ies,
+ extra_ies_len,
+ oper_class, chandef);
+ break;
+ case WLAN_TDLS_CHANNEL_SWITCH_RESPONSE:
+ ieee80211_tdls_add_chan_switch_resp_ies(sdata, skb, peer,
+ status_code,
+ initiator, extra_ies,
+ extra_ies_len);
+ break;
}
}
@@ -459,6 +615,19 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
skb_put(skb, sizeof(tf->u.discover_req));
tf->u.discover_req.dialog_token = dialog_token;
break;
+ case WLAN_TDLS_CHANNEL_SWITCH_REQUEST:
+ tf->category = WLAN_CATEGORY_TDLS;
+ tf->action_code = WLAN_TDLS_CHANNEL_SWITCH_REQUEST;
+
+ skb_put(skb, sizeof(tf->u.chan_switch_req));
+ break;
+ case WLAN_TDLS_CHANNEL_SWITCH_RESPONSE:
+ tf->category = WLAN_CATEGORY_TDLS;
+ tf->action_code = WLAN_TDLS_CHANNEL_SWITCH_RESPONSE;
+
+ skb_put(skb, sizeof(tf->u.chan_switch_resp));
+ tf->u.chan_switch_resp.status_code = cpu_to_le16(status_code);
+ break;
default:
return -EINVAL;
}
@@ -502,32 +671,33 @@ ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
return 0;
}
-static int
-ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
- const u8 *peer, u8 action_code,
- u8 dialog_token, u16 status_code,
- u32 peer_capability, bool initiator,
- const u8 *extra_ies, size_t extra_ies_len)
+static struct sk_buff *
+ieee80211_tdls_build_mgmt_packet_data(struct ieee80211_sub_if_data *sdata,
+ const u8 *peer, u8 action_code,
+ u8 dialog_token, u16 status_code,
+ bool initiator, const u8 *extra_ies,
+ size_t extra_ies_len, u8 oper_class,
+ struct cfg80211_chan_def *chandef)
{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
- struct sk_buff *skb = NULL;
- bool send_direct;
- struct sta_info *sta;
+ struct sk_buff *skb;
int ret;
- skb = dev_alloc_skb(local->hw.extra_tx_headroom +
- max(sizeof(struct ieee80211_mgmt),
- sizeof(struct ieee80211_tdls_data)) +
- 50 + /* supported rates */
- 7 + /* ext capab */
- 26 + /* max(WMM-info, WMM-param) */
- 2 + max(sizeof(struct ieee80211_ht_cap),
- sizeof(struct ieee80211_ht_operation)) +
- extra_ies_len +
- sizeof(struct ieee80211_tdls_lnkie));
+ skb = netdev_alloc_skb(sdata->dev,
+ local->hw.extra_tx_headroom +
+ max(sizeof(struct ieee80211_mgmt),
+ sizeof(struct ieee80211_tdls_data)) +
+ 50 + /* supported rates */
+ 7 + /* ext capab */
+ 26 + /* max(WMM-info, WMM-param) */
+ 2 + max(sizeof(struct ieee80211_ht_cap),
+ sizeof(struct ieee80211_ht_operation)) +
+ 50 + /* supported channels */
+ 3 + /* 40/20 BSS coex */
+ extra_ies_len +
+ sizeof(struct ieee80211_tdls_lnkie));
if (!skb)
- return -ENOMEM;
+ return NULL;
skb_reserve(skb, local->hw.extra_tx_headroom);
@@ -537,16 +707,18 @@ ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
case WLAN_TDLS_SETUP_CONFIRM:
case WLAN_TDLS_TEARDOWN:
case WLAN_TDLS_DISCOVERY_REQUEST:
- ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
+ case WLAN_TDLS_CHANNEL_SWITCH_REQUEST:
+ case WLAN_TDLS_CHANNEL_SWITCH_RESPONSE:
+ ret = ieee80211_prep_tdls_encap_data(local->hw.wiphy,
+ sdata->dev, peer,
action_code, dialog_token,
status_code, skb);
- send_direct = false;
break;
case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
- ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
+ ret = ieee80211_prep_tdls_direct(local->hw.wiphy, sdata->dev,
+ peer, action_code,
dialog_token, status_code,
skb);
- send_direct = true;
break;
default:
ret = -ENOTSUPP;
@@ -556,6 +728,30 @@ ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
if (ret < 0)
goto fail;
+ ieee80211_tdls_add_ies(sdata, skb, peer, action_code, status_code,
+ initiator, extra_ies, extra_ies_len, oper_class,
+ chandef);
+ return skb;
+
+fail:
+ dev_kfree_skb(skb);
+ return NULL;
+}
+
+static int
+ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
+ const u8 *peer, u8 action_code, u8 dialog_token,
+ u16 status_code, u32 peer_capability,
+ bool initiator, const u8 *extra_ies,
+ size_t extra_ies_len, u8 oper_class,
+ struct cfg80211_chan_def *chandef)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sk_buff *skb = NULL;
+ struct sta_info *sta;
+ u32 flags = 0;
+ int ret = 0;
+
rcu_read_lock();
sta = sta_info_get(sdata, peer);
@@ -586,6 +782,8 @@ ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
initiator = false;
break;
case WLAN_TDLS_TEARDOWN:
+ case WLAN_TDLS_CHANNEL_SWITCH_REQUEST:
+ case WLAN_TDLS_CHANNEL_SWITCH_RESPONSE:
/* any value is ok */
break;
default:
@@ -600,9 +798,17 @@ ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
if (ret < 0)
goto fail;
- ieee80211_tdls_add_ies(sdata, skb, peer, action_code, status_code,
- initiator, extra_ies, extra_ies_len);
- if (send_direct) {
+ skb = ieee80211_tdls_build_mgmt_packet_data(sdata, peer, action_code,
+ dialog_token, status_code,
+ initiator, extra_ies,
+ extra_ies_len, oper_class,
+ chandef);
+ if (!skb) {
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ if (action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) {
ieee80211_tx_skb(sdata, skb);
return 0;
}
@@ -623,9 +829,44 @@ ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
break;
}
+ /*
+ * Set the WLAN_TDLS_TEARDOWN flag to indicate a teardown in progress.
+ * Later, if no ACK is returned from peer, we will re-send the teardown
+ * packet through the AP.
+ */
+ if ((action_code == WLAN_TDLS_TEARDOWN) &&
+ (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
+ struct sta_info *sta = NULL;
+ bool try_resend; /* Should we keep skb for possible resend */
+
+ /* If not sending directly to peer - no point in keeping skb */
+ rcu_read_lock();
+ sta = sta_info_get(sdata, peer);
+ try_resend = sta && test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
+ rcu_read_unlock();
+
+ spin_lock_bh(&sdata->u.mgd.teardown_lock);
+ if (try_resend && !sdata->u.mgd.teardown_skb) {
+ /* Mark it as requiring TX status callback */
+ flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
+ IEEE80211_TX_INTFL_MLME_CONN_TX;
+
+ /*
+ * skb is copied since mac80211 will later set
+ * properties that might not be the same as the AP,
+ * such as encryption, QoS, addresses, etc.
+ *
+ * No problem if skb_copy() fails, so no need to check.
+ */
+ sdata->u.mgd.teardown_skb = skb_copy(skb, GFP_ATOMIC);
+ sdata->u.mgd.orig_teardown_skb = skb;
+ }
+ spin_unlock_bh(&sdata->u.mgd.teardown_lock);
+ }
+
/* disable bottom halves when entering the Tx path */
local_bh_disable();
- ret = ieee80211_subif_start_xmit(skb, dev);
+ __ieee80211_subif_start_xmit(skb, dev, flags);
local_bh_enable();
return ret;
@@ -676,7 +917,8 @@ ieee80211_tdls_mgmt_setup(struct wiphy *wiphy, struct net_device *dev,
ret = ieee80211_tdls_prep_mgmt_packet(wiphy, dev, peer, action_code,
dialog_token, status_code,
peer_capability, initiator,
- extra_ies, extra_ies_len);
+ extra_ies, extra_ies_len, 0,
+ NULL);
if (ret < 0)
goto exit;
@@ -715,7 +957,8 @@ ieee80211_tdls_mgmt_teardown(struct wiphy *wiphy, struct net_device *dev,
ret = ieee80211_tdls_prep_mgmt_packet(wiphy, dev, peer, action_code,
dialog_token, status_code,
peer_capability, initiator,
- extra_ies, extra_ies_len);
+ extra_ies, extra_ies_len, 0,
+ NULL);
if (ret < 0)
sdata_err(sdata, "Failed sending TDLS teardown packet %d\n",
ret);
@@ -785,7 +1028,7 @@ int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
status_code,
peer_capability,
initiator, extra_ies,
- extra_ies_len);
+ extra_ies_len, 0, NULL);
break;
default:
ret = -EOPNOTSUPP;
@@ -888,3 +1131,480 @@ void ieee80211_tdls_oper_request(struct ieee80211_vif *vif, const u8 *peer,
cfg80211_tdls_oper_request(sdata->dev, peer, oper, reason_code, gfp);
}
EXPORT_SYMBOL(ieee80211_tdls_oper_request);
+
+static void
+iee80211_tdls_add_ch_switch_timing(u8 *buf, u16 switch_time, u16 switch_timeout)
+{
+ struct ieee80211_ch_switch_timing *ch_sw;
+
+ *buf++ = WLAN_EID_CHAN_SWITCH_TIMING;
+ *buf++ = sizeof(struct ieee80211_ch_switch_timing);
+
+ ch_sw = (void *)buf;
+ ch_sw->switch_time = cpu_to_le16(switch_time);
+ ch_sw->switch_timeout = cpu_to_le16(switch_timeout);
+}
+
+/* find switch timing IE in SKB ready for Tx */
+static const u8 *ieee80211_tdls_find_sw_timing_ie(struct sk_buff *skb)
+{
+ struct ieee80211_tdls_data *tf;
+ const u8 *ie_start;
+
+ /*
+ * Get the offset for the new location of the switch timing IE.
+ * The SKB network header will now point to the "payload_type"
+ * element of the TDLS data frame struct.
+ */
+ tf = container_of(skb->data + skb_network_offset(skb),
+ struct ieee80211_tdls_data, payload_type);
+ ie_start = tf->u.chan_switch_req.variable;
+ return cfg80211_find_ie(WLAN_EID_CHAN_SWITCH_TIMING, ie_start,
+ skb->len - (ie_start - skb->data));
+}
+
+static struct sk_buff *
+ieee80211_tdls_ch_sw_tmpl_get(struct sta_info *sta, u8 oper_class,
+ struct cfg80211_chan_def *chandef,
+ u32 *ch_sw_tm_ie_offset)
+{
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+ u8 extra_ies[2 + sizeof(struct ieee80211_sec_chan_offs_ie) +
+ 2 + sizeof(struct ieee80211_ch_switch_timing)];
+ int extra_ies_len = 2 + sizeof(struct ieee80211_ch_switch_timing);
+ u8 *pos = extra_ies;
+ struct sk_buff *skb;
+
+ /*
+ * if chandef points to a wide channel add a Secondary-Channel
+ * Offset information element
+ */
+ if (chandef->width == NL80211_CHAN_WIDTH_40) {
+ struct ieee80211_sec_chan_offs_ie *sec_chan_ie;
+ bool ht40plus;
+
+ *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET;
+ *pos++ = sizeof(*sec_chan_ie);
+ sec_chan_ie = (void *)pos;
+
+ ht40plus = cfg80211_get_chandef_type(chandef) ==
+ NL80211_CHAN_HT40PLUS;
+ sec_chan_ie->sec_chan_offs = ht40plus ?
+ IEEE80211_HT_PARAM_CHA_SEC_ABOVE :
+ IEEE80211_HT_PARAM_CHA_SEC_BELOW;
+ pos += sizeof(*sec_chan_ie);
+
+ extra_ies_len += 2 + sizeof(struct ieee80211_sec_chan_offs_ie);
+ }
+
+ /* just set the values to 0, this is a template */
+ iee80211_tdls_add_ch_switch_timing(pos, 0, 0);
+
+ skb = ieee80211_tdls_build_mgmt_packet_data(sdata, sta->sta.addr,
+ WLAN_TDLS_CHANNEL_SWITCH_REQUEST,
+ 0, 0, !sta->sta.tdls_initiator,
+ extra_ies, extra_ies_len,
+ oper_class, chandef);
+ if (!skb)
+ return NULL;
+
+ skb = ieee80211_build_data_template(sdata, skb, 0);
+ if (IS_ERR(skb)) {
+ tdls_dbg(sdata, "Failed building TDLS channel switch frame\n");
+ return NULL;
+ }
+
+ if (ch_sw_tm_ie_offset) {
+ const u8 *tm_ie = ieee80211_tdls_find_sw_timing_ie(skb);
+
+ if (!tm_ie) {
+ tdls_dbg(sdata, "No switch timing IE in TDLS switch\n");
+ dev_kfree_skb_any(skb);
+ return NULL;
+ }
+
+ *ch_sw_tm_ie_offset = tm_ie - skb->data;
+ }
+
+ tdls_dbg(sdata,
+ "TDLS channel switch request template for %pM ch %d width %d\n",
+ sta->sta.addr, chandef->chan->center_freq, chandef->width);
+ return skb;
+}
+
+int
+ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
+ const u8 *addr, u8 oper_class,
+ struct cfg80211_chan_def *chandef)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct sta_info *sta;
+ struct sk_buff *skb = NULL;
+ u32 ch_sw_tm_ie;
+ int ret;
+
+ mutex_lock(&local->sta_mtx);
+ sta = sta_info_get(sdata, addr);
+ if (!sta) {
+ tdls_dbg(sdata,
+ "Invalid TDLS peer %pM for channel switch request\n",
+ addr);
+ ret = -ENOENT;
+ goto out;
+ }
+
+ if (!test_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH)) {
+ tdls_dbg(sdata, "TDLS channel switch unsupported by %pM\n",
+ addr);
+ ret = -ENOTSUPP;
+ goto out;
+ }
+
+ skb = ieee80211_tdls_ch_sw_tmpl_get(sta, oper_class, chandef,
+ &ch_sw_tm_ie);
+ if (!skb) {
+ ret = -ENOENT;
+ goto out;
+ }
+
+ ret = drv_tdls_channel_switch(local, sdata, &sta->sta, oper_class,
+ chandef, skb, ch_sw_tm_ie);
+ if (!ret)
+ set_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL);
+
+out:
+ mutex_unlock(&local->sta_mtx);
+ dev_kfree_skb_any(skb);
+ return ret;
+}
+
+void
+ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
+ struct net_device *dev,
+ const u8 *addr)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct sta_info *sta;
+
+ mutex_lock(&local->sta_mtx);
+ sta = sta_info_get(sdata, addr);
+ if (!sta) {
+ tdls_dbg(sdata,
+ "Invalid TDLS peer %pM for channel switch cancel\n",
+ addr);
+ goto out;
+ }
+
+ if (!test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) {
+ tdls_dbg(sdata, "TDLS channel switch not initiated by %pM\n",
+ addr);
+ goto out;
+ }
+
+ drv_tdls_cancel_channel_switch(local, sdata, &sta->sta);
+ clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL);
+
+out:
+ mutex_unlock(&local->sta_mtx);
+}
+
+static struct sk_buff *
+ieee80211_tdls_ch_sw_resp_tmpl_get(struct sta_info *sta,
+ u32 *ch_sw_tm_ie_offset)
+{
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+ struct sk_buff *skb;
+ u8 extra_ies[2 + sizeof(struct ieee80211_ch_switch_timing)];
+
+ /* initial timing are always zero in the template */
+ iee80211_tdls_add_ch_switch_timing(extra_ies, 0, 0);
+
+ skb = ieee80211_tdls_build_mgmt_packet_data(sdata, sta->sta.addr,
+ WLAN_TDLS_CHANNEL_SWITCH_RESPONSE,
+ 0, 0, !sta->sta.tdls_initiator,
+ extra_ies, sizeof(extra_ies), 0, NULL);
+ if (!skb)
+ return NULL;
+
+ skb = ieee80211_build_data_template(sdata, skb, 0);
+ if (IS_ERR(skb)) {
+ tdls_dbg(sdata,
+ "Failed building TDLS channel switch resp frame\n");
+ return NULL;
+ }
+
+ if (ch_sw_tm_ie_offset) {
+ const u8 *tm_ie = ieee80211_tdls_find_sw_timing_ie(skb);
+
+ if (!tm_ie) {
+ tdls_dbg(sdata,
+ "No switch timing IE in TDLS switch resp\n");
+ dev_kfree_skb_any(skb);
+ return NULL;
+ }
+
+ *ch_sw_tm_ie_offset = tm_ie - skb->data;
+ }
+
+ tdls_dbg(sdata, "TDLS get channel switch response template for %pM\n",
+ sta->sta.addr);
+ return skb;
+}
+
+static int
+ieee80211_process_tdls_channel_switch_resp(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee802_11_elems elems;
+ struct sta_info *sta;
+ struct ieee80211_tdls_data *tf = (void *)skb->data;
+ bool local_initiator;
+ struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
+ int baselen = offsetof(typeof(*tf), u.chan_switch_resp.variable);
+ struct ieee80211_tdls_ch_sw_params params = {};
+ int ret;
+
+ params.action_code = WLAN_TDLS_CHANNEL_SWITCH_RESPONSE;
+ params.timestamp = rx_status->device_timestamp;
+
+ if (skb->len < baselen) {
+ tdls_dbg(sdata, "TDLS channel switch resp too short: %d\n",
+ skb->len);
+ return -EINVAL;
+ }
+
+ mutex_lock(&local->sta_mtx);
+ sta = sta_info_get(sdata, tf->sa);
+ if (!sta || !test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH)) {
+ tdls_dbg(sdata, "TDLS chan switch from non-peer sta %pM\n",
+ tf->sa);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ params.sta = &sta->sta;
+ params.status = le16_to_cpu(tf->u.chan_switch_resp.status_code);
+ if (params.status != 0) {
+ ret = 0;
+ goto call_drv;
+ }
+
+ ieee802_11_parse_elems(tf->u.chan_switch_resp.variable,
+ skb->len - baselen, false, &elems);
+ if (elems.parse_error) {
+ tdls_dbg(sdata, "Invalid IEs in TDLS channel switch resp\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (!elems.ch_sw_timing || !elems.lnk_id) {
+ tdls_dbg(sdata, "TDLS channel switch resp - missing IEs\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* validate the initiator is set correctly */
+ local_initiator =
+ !memcmp(elems.lnk_id->init_sta, sdata->vif.addr, ETH_ALEN);
+ if (local_initiator == sta->sta.tdls_initiator) {
+ tdls_dbg(sdata, "TDLS chan switch invalid lnk-id initiator\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ params.switch_time = le16_to_cpu(elems.ch_sw_timing->switch_time);
+ params.switch_timeout = le16_to_cpu(elems.ch_sw_timing->switch_timeout);
+
+ params.tmpl_skb =
+ ieee80211_tdls_ch_sw_resp_tmpl_get(sta, &params.ch_sw_tm_ie);
+ if (!params.tmpl_skb) {
+ ret = -ENOENT;
+ goto out;
+ }
+
+call_drv:
+ drv_tdls_recv_channel_switch(sdata->local, sdata, &params);
+
+ tdls_dbg(sdata,
+ "TDLS channel switch response received from %pM status %d\n",
+ tf->sa, params.status);
+
+out:
+ mutex_unlock(&local->sta_mtx);
+ dev_kfree_skb_any(params.tmpl_skb);
+ return ret;
+}
+
+static int
+ieee80211_process_tdls_channel_switch_req(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee802_11_elems elems;
+ struct cfg80211_chan_def chandef;
+ struct ieee80211_channel *chan;
+ enum nl80211_channel_type chan_type;
+ int freq;
+ u8 target_channel, oper_class;
+ bool local_initiator;
+ struct sta_info *sta;
+ enum ieee80211_band band;
+ struct ieee80211_tdls_data *tf = (void *)skb->data;
+ struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
+ int baselen = offsetof(typeof(*tf), u.chan_switch_req.variable);
+ struct ieee80211_tdls_ch_sw_params params = {};
+ int ret = 0;
+
+ params.action_code = WLAN_TDLS_CHANNEL_SWITCH_REQUEST;
+ params.timestamp = rx_status->device_timestamp;
+
+ if (skb->len < baselen) {
+ tdls_dbg(sdata, "TDLS channel switch req too short: %d\n",
+ skb->len);
+ return -EINVAL;
+ }
+
+ target_channel = tf->u.chan_switch_req.target_channel;
+ oper_class = tf->u.chan_switch_req.oper_class;
+
+ /*
+ * We can't easily infer the channel band. The operating class is
+ * ambiguous - there are multiple tables (US/Europe/JP/Global). The
+ * solution here is to treat channels with number >14 as 5GHz ones,
+ * and specifically check for the (oper_class, channel) combinations
+ * where this doesn't hold. These are thankfully unique according to
+ * IEEE802.11-2012.
+ * We consider only the 2GHz and 5GHz bands and 20MHz+ channels as
+ * valid here.
+ */
+ if ((oper_class == 112 || oper_class == 2 || oper_class == 3 ||
+ oper_class == 4 || oper_class == 5 || oper_class == 6) &&
+ target_channel < 14)
+ band = IEEE80211_BAND_5GHZ;
+ else
+ band = target_channel < 14 ? IEEE80211_BAND_2GHZ :
+ IEEE80211_BAND_5GHZ;
+
+ freq = ieee80211_channel_to_frequency(target_channel, band);
+ if (freq == 0) {
+ tdls_dbg(sdata, "Invalid channel in TDLS chan switch: %d\n",
+ target_channel);
+ return -EINVAL;
+ }
+
+ chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
+ if (!chan) {
+ tdls_dbg(sdata,
+ "Unsupported channel for TDLS chan switch: %d\n",
+ target_channel);
+ return -EINVAL;
+ }
+
+ ieee802_11_parse_elems(tf->u.chan_switch_req.variable,
+ skb->len - baselen, false, &elems);
+ if (elems.parse_error) {
+ tdls_dbg(sdata, "Invalid IEs in TDLS channel switch req\n");
+ return -EINVAL;
+ }
+
+ if (!elems.ch_sw_timing || !elems.lnk_id) {
+ tdls_dbg(sdata, "TDLS channel switch req - missing IEs\n");
+ return -EINVAL;
+ }
+
+ mutex_lock(&local->sta_mtx);
+ sta = sta_info_get(sdata, tf->sa);
+ if (!sta || !test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH)) {
+ tdls_dbg(sdata, "TDLS chan switch from non-peer sta %pM\n",
+ tf->sa);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ params.sta = &sta->sta;
+
+ /* validate the initiator is set correctly */
+ local_initiator =
+ !memcmp(elems.lnk_id->init_sta, sdata->vif.addr, ETH_ALEN);
+ if (local_initiator == sta->sta.tdls_initiator) {
+ tdls_dbg(sdata, "TDLS chan switch invalid lnk-id initiator\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (!sta->sta.ht_cap.ht_supported) {
+ chan_type = NL80211_CHAN_NO_HT;
+ } else if (!elems.sec_chan_offs) {
+ chan_type = NL80211_CHAN_HT20;
+ } else {
+ switch (elems.sec_chan_offs->sec_chan_offs) {
+ case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
+ chan_type = NL80211_CHAN_HT40PLUS;
+ break;
+ case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
+ chan_type = NL80211_CHAN_HT40MINUS;
+ break;
+ default:
+ chan_type = NL80211_CHAN_HT20;
+ break;
+ }
+ }
+
+ cfg80211_chandef_create(&chandef, chan, chan_type);
+ params.chandef = &chandef;
+
+ params.switch_time = le16_to_cpu(elems.ch_sw_timing->switch_time);
+ params.switch_timeout = le16_to_cpu(elems.ch_sw_timing->switch_timeout);
+
+ params.tmpl_skb =
+ ieee80211_tdls_ch_sw_resp_tmpl_get(sta,
+ &params.ch_sw_tm_ie);
+ if (!params.tmpl_skb) {
+ ret = -ENOENT;
+ goto out;
+ }
+
+ drv_tdls_recv_channel_switch(sdata->local, sdata, &params);
+
+ tdls_dbg(sdata,
+ "TDLS ch switch request received from %pM ch %d width %d\n",
+ tf->sa, params.chandef->chan->center_freq,
+ params.chandef->width);
+out:
+ mutex_unlock(&local->sta_mtx);
+ dev_kfree_skb_any(params.tmpl_skb);
+ return ret;
+}
+
+void ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb)
+{
+ struct ieee80211_tdls_data *tf = (void *)skb->data;
+ struct wiphy *wiphy = sdata->local->hw.wiphy;
+
+ /* make sure the driver supports it */
+ if (!(wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
+ return;
+
+ /* we want to access the entire packet */
+ if (skb_linearize(skb))
+ return;
+ /*
+ * The packet/size was already validated by mac80211 Rx path, only look
+ * at the action type.
+ */
+ switch (tf->action_code) {
+ case WLAN_TDLS_CHANNEL_SWITCH_REQUEST:
+ ieee80211_process_tdls_channel_switch_req(sdata, skb);
+ break;
+ case WLAN_TDLS_CHANNEL_SWITCH_RESPONSE:
+ ieee80211_process_tdls_channel_switch_resp(sdata, skb);
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ return;
+ }
+}
diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
index 809a4983eb4..85ccfbe863d 100644
--- a/net/mac80211/trace.h
+++ b/net/mac80211/trace.h
@@ -16,6 +16,7 @@
#define STA_ENTRY __array(char, sta_addr, ETH_ALEN)
#define STA_ASSIGN (sta ? memcpy(__entry->sta_addr, sta->addr, ETH_ALEN) : memset(__entry->sta_addr, 0, ETH_ALEN))
+#define STA_NAMED_ASSIGN(s) memcpy(__entry->sta_addr, (s)->addr, ETH_ALEN)
#define STA_PR_FMT " sta:%pM"
#define STA_PR_ARG __entry->sta_addr
@@ -595,14 +596,33 @@ DEFINE_EVENT(local_sdata_evt, drv_sched_scan_stop,
TP_ARGS(local, sdata)
);
-DEFINE_EVENT(local_only_evt, drv_sw_scan_start,
- TP_PROTO(struct ieee80211_local *local),
- TP_ARGS(local)
+TRACE_EVENT(drv_sw_scan_start,
+ TP_PROTO(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ const u8 *mac_addr),
+
+ TP_ARGS(local, sdata, mac_addr),
+
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ VIF_ENTRY
+ __array(char, mac_addr, ETH_ALEN)
+ ),
+
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ VIF_ASSIGN;
+ memcpy(__entry->mac_addr, mac_addr, ETH_ALEN);
+ ),
+
+ TP_printk(LOCAL_PR_FMT ", " VIF_PR_FMT ", addr:%pM",
+ LOCAL_PR_ARG, VIF_PR_ARG, __entry->mac_addr)
);
-DEFINE_EVENT(local_only_evt, drv_sw_scan_complete,
- TP_PROTO(struct ieee80211_local *local),
- TP_ARGS(local)
+DEFINE_EVENT(local_sdata_evt, drv_sw_scan_complete,
+ TP_PROTO(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata),
+ TP_ARGS(local, sdata)
);
TRACE_EVENT(drv_get_stats,
@@ -826,6 +846,13 @@ DEFINE_EVENT(sta_event, drv_sta_pre_rcu_remove,
TP_ARGS(local, sdata, sta)
);
+DEFINE_EVENT(sta_event, drv_sta_rate_tbl_update,
+ TP_PROTO(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta *sta),
+ TP_ARGS(local, sdata, sta)
+);
+
TRACE_EVENT(drv_conf_tx,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
@@ -2140,6 +2167,7 @@ TRACE_EVENT(drv_pre_channel_switch,
VIF_ENTRY
CHANDEF_ENTRY
__field(u64, timestamp)
+ __field(u32, device_timestamp)
__field(bool, block_tx)
__field(u8, count)
),
@@ -2149,6 +2177,7 @@ TRACE_EVENT(drv_pre_channel_switch,
VIF_ASSIGN;
CHANDEF_ASSIGN(&ch_switch->chandef)
__entry->timestamp = ch_switch->timestamp;
+ __entry->device_timestamp = ch_switch->device_timestamp;
__entry->block_tx = ch_switch->block_tx;
__entry->count = ch_switch->count;
),
@@ -2194,6 +2223,107 @@ TRACE_EVENT(drv_get_txpower,
)
);
+TRACE_EVENT(drv_tdls_channel_switch,
+ TP_PROTO(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta *sta, u8 oper_class,
+ struct cfg80211_chan_def *chandef),
+
+ TP_ARGS(local, sdata, sta, oper_class, chandef),
+
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ VIF_ENTRY
+ STA_ENTRY
+ __field(u8, oper_class)
+ CHANDEF_ENTRY
+ ),
+
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ VIF_ASSIGN;
+ STA_ASSIGN;
+ __entry->oper_class = oper_class;
+ CHANDEF_ASSIGN(chandef)
+ ),
+
+ TP_printk(
+ LOCAL_PR_FMT VIF_PR_FMT " tdls channel switch to"
+ CHANDEF_PR_FMT " oper_class:%d " STA_PR_FMT,
+ LOCAL_PR_ARG, VIF_PR_ARG, CHANDEF_PR_ARG, __entry->oper_class,
+ STA_PR_ARG
+ )
+);
+
+TRACE_EVENT(drv_tdls_cancel_channel_switch,
+ TP_PROTO(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta *sta),
+
+ TP_ARGS(local, sdata, sta),
+
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ VIF_ENTRY
+ STA_ENTRY
+ ),
+
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ VIF_ASSIGN;
+ STA_ASSIGN;
+ ),
+
+ TP_printk(
+ LOCAL_PR_FMT VIF_PR_FMT
+ " tdls cancel channel switch with " STA_PR_FMT,
+ LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG
+ )
+);
+
+TRACE_EVENT(drv_tdls_recv_channel_switch,
+ TP_PROTO(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_tdls_ch_sw_params *params),
+
+ TP_ARGS(local, sdata, params),
+
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ VIF_ENTRY
+ __field(u8, action_code)
+ STA_ENTRY
+ CHANDEF_ENTRY
+ __field(u32, status)
+ __field(bool, peer_initiator)
+ __field(u32, timestamp)
+ __field(u16, switch_time)
+ __field(u16, switch_timeout)
+ ),
+
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ VIF_ASSIGN;
+ STA_NAMED_ASSIGN(params->sta);
+ CHANDEF_ASSIGN(params->chandef)
+ __entry->peer_initiator = params->sta->tdls_initiator;
+ __entry->action_code = params->action_code;
+ __entry->status = params->status;
+ __entry->timestamp = params->timestamp;
+ __entry->switch_time = params->switch_time;
+ __entry->switch_timeout = params->switch_timeout;
+ ),
+
+ TP_printk(
+ LOCAL_PR_FMT VIF_PR_FMT " received tdls channel switch packet"
+ " action:%d status:%d time:%d switch time:%d switch"
+ " timeout:%d initiator: %d chan:" CHANDEF_PR_FMT STA_PR_FMT,
+ LOCAL_PR_ARG, VIF_PR_ARG, __entry->action_code, __entry->status,
+ __entry->timestamp, __entry->switch_time,
+ __entry->switch_timeout, __entry->peer_initiator,
+ CHANDEF_PR_ARG, STA_PR_ARG
+ )
+);
#ifdef CONFIG_MAC80211_MESSAGE_TRACING
#undef TRACE_SYSTEM
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 3ffd91f295a..66ddbbeccd2 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1426,8 +1426,7 @@ EXPORT_SYMBOL(ieee80211_tx_prepare_skb);
* Returns false if the frame couldn't be transmitted but was queued instead.
*/
static bool ieee80211_tx(struct ieee80211_sub_if_data *sdata,
- struct sk_buff *skb, bool txpending,
- enum ieee80211_band band)
+ struct sk_buff *skb, bool txpending)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_tx_data tx;
@@ -1452,8 +1451,6 @@ static bool ieee80211_tx(struct ieee80211_sub_if_data *sdata,
return true;
}
- info->band = band;
-
/* set up hw_queue value early */
if (!(info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) ||
!(local->hw.flags & IEEE80211_HW_QUEUE_CONTROL))
@@ -1501,8 +1498,7 @@ static int ieee80211_skb_resize(struct ieee80211_sub_if_data *sdata,
return 0;
}
-void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
- enum ieee80211_band band)
+void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
@@ -1537,7 +1533,7 @@ void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
}
ieee80211_set_qos_hdr(sdata, skb);
- ieee80211_tx(sdata, skb, false, band);
+ ieee80211_tx(sdata, skb, false);
}
static bool ieee80211_parse_tx_radiotap(struct sk_buff *skb)
@@ -1757,7 +1753,8 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
sdata->vif.type))
goto fail_rcu;
- ieee80211_xmit(sdata, skb, chandef->chan->band);
+ info->band = chandef->chan->band;
+ ieee80211_xmit(sdata, skb);
rcu_read_unlock();
return NETDEV_TX_OK;
@@ -1787,23 +1784,26 @@ static void ieee80211_tx_latency_start_msrmnt(struct ieee80211_local *local,
}
/**
- * ieee80211_subif_start_xmit - netif start_xmit function for Ethernet-type
- * subinterfaces (wlan#, WDS, and VLAN interfaces)
- * @skb: packet to be sent
- * @dev: incoming interface
+ * ieee80211_build_hdr - build 802.11 header in the given frame
+ * @sdata: virtual interface to build the header for
+ * @skb: the skb to build the header in
+ * @info_flags: skb flags to set
+ *
+ * This function takes the skb with 802.3 header and reformats the header to
+ * the appropriate IEEE 802.11 header based on which interface the packet is
+ * being transmitted on.
*
- * Returns: NETDEV_TX_OK both on success and on failure. On failure skb will
- * be freed.
+ * Note that this function also takes care of the TX status request and
+ * potential unsharing of the SKB - this needs to be interleaved with the
+ * header building.
*
- * This function takes in an Ethernet header and encapsulates it with suitable
- * IEEE 802.11 header based on which interface the packet is coming in. The
- * encapsulated packet will then be passed to master interface, wlan#.11, for
- * transmission (through low-level driver).
+ * The function requires the read-side RCU lock held
+ *
+ * Returns: the (possibly reallocated) skb or an ERR_PTR() code
*/
-netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
- struct net_device *dev)
+static struct sk_buff *ieee80211_build_hdr(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, u32 info_flags)
{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
struct ieee80211_tx_info *info;
int head_need;
@@ -1819,25 +1819,17 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
bool wme_sta = false, authorized = false, tdls_auth = false;
bool tdls_peer = false, tdls_setup_frame = false;
bool multicast;
- u32 info_flags = 0;
u16 info_id = 0;
struct ieee80211_chanctx_conf *chanctx_conf;
struct ieee80211_sub_if_data *ap_sdata;
enum ieee80211_band band;
-
- if (unlikely(skb->len < ETH_HLEN))
- goto fail;
+ int ret;
/* convert Ethernet header to proper 802.11 header (based on
* operation mode) */
ethertype = (skb->data[12] << 8) | skb->data[13];
fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA);
- rcu_read_lock();
-
- /* Measure frame arrival for Tx latency statistics calculation */
- ieee80211_tx_latency_start_msrmnt(local, skb);
-
switch (sdata->vif.type) {
case NL80211_IFTYPE_AP_VLAN:
sta = rcu_dereference(sdata->u.vlan.sta);
@@ -1855,8 +1847,10 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
ap_sdata = container_of(sdata->bss, struct ieee80211_sub_if_data,
u.ap);
chanctx_conf = rcu_dereference(ap_sdata->vif.chanctx_conf);
- if (!chanctx_conf)
- goto fail_rcu;
+ if (!chanctx_conf) {
+ ret = -ENOTCONN;
+ goto free;
+ }
band = chanctx_conf->def.chan->band;
if (sta)
break;
@@ -1864,8 +1858,10 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
case NL80211_IFTYPE_AP:
if (sdata->vif.type == NL80211_IFTYPE_AP)
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
- if (!chanctx_conf)
- goto fail_rcu;
+ if (!chanctx_conf) {
+ ret = -ENOTCONN;
+ goto free;
+ }
fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
/* DA BSSID SA */
memcpy(hdr.addr1, skb->data, ETH_ALEN);
@@ -1952,8 +1948,10 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
}
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
- if (!chanctx_conf)
- goto fail_rcu;
+ if (!chanctx_conf) {
+ ret = -ENOTCONN;
+ goto free;
+ }
band = chanctx_conf->def.chan->band;
break;
#endif
@@ -1983,8 +1981,10 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
* of a link teardown after a TDLS sta is removed due to being
* unreachable.
*/
- if (tdls_peer && !tdls_auth && !tdls_setup_frame)
- goto fail_rcu;
+ if (tdls_peer && !tdls_auth && !tdls_setup_frame) {
+ ret = -EINVAL;
+ goto free;
+ }
/* send direct packets to authorized TDLS peers */
if (tdls_peer && tdls_auth) {
@@ -2012,8 +2012,10 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
hdrlen = 24;
}
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
- if (!chanctx_conf)
- goto fail_rcu;
+ if (!chanctx_conf) {
+ ret = -ENOTCONN;
+ goto free;
+ }
band = chanctx_conf->def.chan->band;
break;
case NL80211_IFTYPE_OCB:
@@ -2023,8 +2025,10 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
eth_broadcast_addr(hdr.addr3);
hdrlen = 24;
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
- if (!chanctx_conf)
- goto fail_rcu;
+ if (!chanctx_conf) {
+ ret = -ENOTCONN;
+ goto free;
+ }
band = chanctx_conf->def.chan->band;
break;
case NL80211_IFTYPE_ADHOC:
@@ -2034,12 +2038,15 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
memcpy(hdr.addr3, sdata->u.ibss.bssid, ETH_ALEN);
hdrlen = 24;
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
- if (!chanctx_conf)
- goto fail_rcu;
+ if (!chanctx_conf) {
+ ret = -ENOTCONN;
+ goto free;
+ }
band = chanctx_conf->def.chan->band;
break;
default:
- goto fail_rcu;
+ ret = -EINVAL;
+ goto free;
}
/*
@@ -2077,12 +2084,13 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
!ether_addr_equal(sdata->vif.addr, skb->data + ETH_ALEN)))) {
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
net_info_ratelimited("%s: dropped frame to %pM (unauthorized port)\n",
- dev->name, hdr.addr1);
+ sdata->name, hdr.addr1);
#endif
I802_DEBUG_INC(local->tx_handlers_drop_unauth_port);
- goto fail_rcu;
+ ret = -EPERM;
+ goto free;
}
if (unlikely(!multicast && skb->sk &&
@@ -2119,8 +2127,10 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
skb = skb_clone(skb, GFP_ATOMIC);
kfree_skb(tmp_skb);
- if (!skb)
- goto fail_rcu;
+ if (!skb) {
+ ret = -ENOMEM;
+ goto free;
+ }
}
hdr.frame_control = fc;
@@ -2169,7 +2179,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
if (ieee80211_skb_resize(sdata, skb, head_need, true)) {
ieee80211_free_txskb(&local->hw, skb);
skb = NULL;
- goto fail_rcu;
+ return ERR_PTR(-ENOMEM);
}
}
@@ -2203,9 +2213,6 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
nh_pos += hdrlen;
h_pos += hdrlen;
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += skb->len;
-
/* Update skb pointers to various headers since this modified frame
* is going to go through Linux networking code that may potentially
* need things like pointer to IP header. */
@@ -2216,23 +2223,90 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
info = IEEE80211_SKB_CB(skb);
memset(info, 0, sizeof(*info));
- dev->trans_start = jiffies;
-
info->flags = info_flags;
info->ack_frame_id = info_id;
+ info->band = band;
- ieee80211_xmit(sdata, skb, band);
- rcu_read_unlock();
+ return skb;
+ free:
+ kfree_skb(skb);
+ return ERR_PTR(ret);
+}
- return NETDEV_TX_OK;
+void __ieee80211_subif_start_xmit(struct sk_buff *skb,
+ struct net_device *dev,
+ u32 info_flags)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+
+ if (unlikely(skb->len < ETH_HLEN)) {
+ kfree_skb(skb);
+ return;
+ }
+
+ rcu_read_lock();
+
+ /* Measure frame arrival for Tx latency statistics calculation */
+ ieee80211_tx_latency_start_msrmnt(local, skb);
+
+ skb = ieee80211_build_hdr(sdata, skb, info_flags);
+ if (IS_ERR(skb))
+ goto out;
+
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
+ dev->trans_start = jiffies;
- fail_rcu:
+ ieee80211_xmit(sdata, skb);
+ out:
rcu_read_unlock();
- fail:
- dev_kfree_skb(skb);
+}
+
+/**
+ * ieee80211_subif_start_xmit - netif start_xmit function for 802.3 vifs
+ * @skb: packet to be sent
+ * @dev: incoming interface
+ *
+ * On failure skb will be freed.
+ */
+netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ __ieee80211_subif_start_xmit(skb, dev, 0);
return NETDEV_TX_OK;
}
+struct sk_buff *
+ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, u32 info_flags)
+{
+ struct ieee80211_hdr *hdr;
+ struct ieee80211_tx_data tx = {
+ .local = sdata->local,
+ .sdata = sdata,
+ };
+
+ rcu_read_lock();
+
+ skb = ieee80211_build_hdr(sdata, skb, info_flags);
+ if (IS_ERR(skb))
+ goto out;
+
+ hdr = (void *)skb->data;
+ tx.sta = sta_info_get(sdata, hdr->addr1);
+ tx.skb = skb;
+
+ if (ieee80211_tx_h_select_key(&tx) != TX_CONTINUE) {
+ rcu_read_unlock();
+ kfree_skb(skb);
+ return ERR_PTR(-EINVAL);
+ }
+
+out:
+ rcu_read_unlock();
+ return skb;
+}
/*
* ieee80211_clear_tx_pending may not be called in a context where
@@ -2272,8 +2346,8 @@ static bool ieee80211_tx_pending_skb(struct ieee80211_local *local,
dev_kfree_skb(skb);
return true;
}
- result = ieee80211_tx(sdata, skb, true,
- chanctx_conf->def.chan->band);
+ info->band = chanctx_conf->def.chan->band;
+ result = ieee80211_tx(sdata, skb, true);
} else {
struct sk_buff_head skbs;
@@ -2887,19 +2961,16 @@ struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw,
EXPORT_SYMBOL(ieee80211_nullfunc_get);
struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
+ const u8 *src_addr,
const u8 *ssid, size_t ssid_len,
size_t tailroom)
{
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_local *local;
+ struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_hdr_3addr *hdr;
struct sk_buff *skb;
size_t ie_ssid_len;
u8 *pos;
- sdata = vif_to_sdata(vif);
- local = sdata->local;
ie_ssid_len = 2 + ssid_len;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*hdr) +
@@ -2914,7 +2985,7 @@ struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw,
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_PROBE_REQ);
eth_broadcast_addr(hdr->addr1);
- memcpy(hdr->addr2, vif->addr, ETH_ALEN);
+ memcpy(hdr->addr2, src_addr, ETH_ALEN);
eth_broadcast_addr(hdr->addr3);
pos = skb_put(skb, ie_ssid_len);
@@ -3033,6 +3104,97 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw,
}
EXPORT_SYMBOL(ieee80211_get_buffered_bc);
+int ieee80211_reserve_tid(struct ieee80211_sta *pubsta, u8 tid)
+{
+ struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+ struct ieee80211_local *local = sdata->local;
+ int ret;
+ u32 queues;
+
+ lockdep_assert_held(&local->sta_mtx);
+
+ /* only some cases are supported right now */
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_AP_VLAN:
+ break;
+ default:
+ WARN_ON(1);
+ return -EINVAL;
+ }
+
+ if (WARN_ON(tid >= IEEE80211_NUM_UPS))
+ return -EINVAL;
+
+ if (sta->reserved_tid == tid) {
+ ret = 0;
+ goto out;
+ }
+
+ if (sta->reserved_tid != IEEE80211_TID_UNRESERVED) {
+ sdata_err(sdata, "TID reservation already active\n");
+ ret = -EALREADY;
+ goto out;
+ }
+
+ ieee80211_stop_vif_queues(sdata->local, sdata,
+ IEEE80211_QUEUE_STOP_REASON_RESERVE_TID);
+
+ synchronize_net();
+
+ /* Tear down BA sessions so we stop aggregating on this TID */
+ if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION) {
+ set_sta_flag(sta, WLAN_STA_BLOCK_BA);
+ __ieee80211_stop_tx_ba_session(sta, tid,
+ AGG_STOP_LOCAL_REQUEST);
+ }
+
+ queues = BIT(sdata->vif.hw_queue[ieee802_1d_to_ac[tid]]);
+ __ieee80211_flush_queues(local, sdata, queues);
+
+ sta->reserved_tid = tid;
+
+ ieee80211_wake_vif_queues(local, sdata,
+ IEEE80211_QUEUE_STOP_REASON_RESERVE_TID);
+
+ if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)
+ clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
+
+ ret = 0;
+ out:
+ return ret;
+}
+EXPORT_SYMBOL(ieee80211_reserve_tid);
+
+void ieee80211_unreserve_tid(struct ieee80211_sta *pubsta, u8 tid)
+{
+ struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+
+ lockdep_assert_held(&sdata->local->sta_mtx);
+
+ /* only some cases are supported right now */
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_AP_VLAN:
+ break;
+ default:
+ WARN_ON(1);
+ return;
+ }
+
+ if (tid != sta->reserved_tid) {
+ sdata_err(sdata, "TID to unreserve (%d) isn't reserved\n", tid);
+ return;
+ }
+
+ sta->reserved_tid = IEEE80211_TID_UNRESERVED;
+}
+EXPORT_SYMBOL(ieee80211_unreserve_tid);
+
void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, int tid,
enum ieee80211_band band)
@@ -3054,6 +3216,7 @@ void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
* requirements are that we do not come into tx with bhs on.
*/
local_bh_disable();
- ieee80211_xmit(sdata, skb, band);
+ IEEE80211_SKB_CB(skb)->band = band;
+ ieee80211_xmit(sdata, skb);
local_bh_enable();
}
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index f9319a5dca6..bb9664cb883 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -576,15 +576,19 @@ ieee80211_get_vif_queues(struct ieee80211_local *local,
return queues;
}
-void ieee80211_flush_queues(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata)
+void __ieee80211_flush_queues(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ unsigned int queues)
{
- unsigned int queues;
-
if (!local->ops->flush)
return;
- queues = ieee80211_get_vif_queues(local, sdata);
+ /*
+ * If no queue was set, or if the HW doesn't support
+ * IEEE80211_HW_QUEUE_CONTROL - flush all queues
+ */
+ if (!queues || !(local->hw.flags & IEEE80211_HW_QUEUE_CONTROL))
+ queues = ieee80211_get_vif_queues(local, sdata);
ieee80211_stop_queues_by_reason(&local->hw, queues,
IEEE80211_QUEUE_STOP_REASON_FLUSH,
@@ -597,6 +601,12 @@ void ieee80211_flush_queues(struct ieee80211_local *local,
false);
}
+void ieee80211_flush_queues(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
+{
+ __ieee80211_flush_queues(local, sdata, 0);
+}
+
void ieee80211_stop_vif_queues(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
enum queue_stop_reason reason)
@@ -831,6 +841,9 @@ u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
case WLAN_EID_CHAN_SWITCH_PARAM:
+ case WLAN_EID_EXT_CAPABILITY:
+ case WLAN_EID_CHAN_SWITCH_TIMING:
+ case WLAN_EID_LINK_ID:
/*
* not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
* that if the content gets bigger it might be needed more than once
@@ -850,6 +863,24 @@ u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
elem_parse_failed = false;
switch (id) {
+ case WLAN_EID_LINK_ID:
+ if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) {
+ elem_parse_failed = true;
+ break;
+ }
+ elems->lnk_id = (void *)(pos - 2);
+ break;
+ case WLAN_EID_CHAN_SWITCH_TIMING:
+ if (elen != sizeof(struct ieee80211_ch_switch_timing)) {
+ elem_parse_failed = true;
+ break;
+ }
+ elems->ch_sw_timing = (void *)pos;
+ break;
+ case WLAN_EID_EXT_CAPABILITY:
+ elems->ext_capab = pos;
+ elems->ext_capab_len = elen;
+ break;
case WLAN_EID_SSID:
elems->ssid = pos;
elems->ssid_len = elen;
@@ -1492,7 +1523,8 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
};
struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
- u8 *dst, u32 ratemask,
+ const u8 *src, const u8 *dst,
+ u32 ratemask,
struct ieee80211_channel *chan,
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len,
@@ -1517,8 +1549,8 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
else
chandef.chan = chan;
- skb = ieee80211_probereq_get(&local->hw, &sdata->vif,
- ssid, ssid_len, 100 + ie_len);
+ skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
+ 100 + ie_len);
if (!skb)
return NULL;
@@ -1540,7 +1572,8 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
return skb;
}
-void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
+void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
+ const u8 *src, const u8 *dst,
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len,
u32 ratemask, bool directed, u32 tx_flags,
@@ -1548,7 +1581,7 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
{
struct sk_buff *skb;
- skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel,
+ skb = ieee80211_build_probe_req(sdata, src, dst, ratemask, channel,
ssid, ssid_len,
ie, ie_len, directed);
if (skb) {
@@ -1690,6 +1723,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
int res, i;
bool reconfig_due_to_wowlan = false;
struct ieee80211_sub_if_data *sched_scan_sdata;
+ struct cfg80211_sched_scan_request *sched_scan_req;
bool sched_scan_stopped = false;
#ifdef CONFIG_PM
@@ -1980,13 +2014,15 @@ int ieee80211_reconfig(struct ieee80211_local *local)
mutex_lock(&local->mtx);
sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
lockdep_is_held(&local->mtx));
- if (sched_scan_sdata && local->sched_scan_req)
+ sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
+ lockdep_is_held(&local->mtx));
+ if (sched_scan_sdata && sched_scan_req)
/*
* Sched scan stopped, but we don't want to report it. Instead,
* we're trying to reschedule.
*/
if (__ieee80211_request_sched_scan_start(sched_scan_sdata,
- local->sched_scan_req))
+ sched_scan_req))
sched_scan_stopped = true;
mutex_unlock(&local->mtx);
diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c
index 671ce0d27a8..bc9e8fc4878 100644
--- a/net/mac80211/vht.c
+++ b/net/mac80211/vht.c
@@ -287,6 +287,8 @@ enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta)
/* fall through */
case NL80211_CHAN_WIDTH_20_NOHT:
case NL80211_CHAN_WIDTH_20:
+ bw = IEEE80211_STA_RX_BW_20;
+ break;
case NL80211_CHAN_WIDTH_40:
bw = sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ?
IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20;
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index fdf52db95b3..9eb0aee9105 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -53,6 +53,36 @@ static int wme_downgrade_ac(struct sk_buff *skb)
}
}
+/**
+ * ieee80211_fix_reserved_tid - return the TID to use if this one is reserved
+ * @tid: the assumed-reserved TID
+ *
+ * Returns: the alternative TID to use, or 0 on error
+ */
+static inline u8 ieee80211_fix_reserved_tid(u8 tid)
+{
+ switch (tid) {
+ case 0:
+ return 3;
+ case 1:
+ return 2;
+ case 2:
+ return 1;
+ case 3:
+ return 0;
+ case 4:
+ return 5;
+ case 5:
+ return 4;
+ case 6:
+ return 7;
+ case 7:
+ return 6;
+ }
+
+ return 0;
+}
+
static u16 ieee80211_downgrade_queue(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta, struct sk_buff *skb)
{
@@ -77,6 +107,10 @@ static u16 ieee80211_downgrade_queue(struct ieee80211_sub_if_data *sdata,
}
}
+ /* Check to see if this is a reserved TID */
+ if (sta && sta->reserved_tid == skb->priority)
+ skb->priority = ieee80211_fix_reserved_tid(skb->priority);
+
/* look up which queue to use for frames with this 1d tag */
return ieee802_1d_to_ac[skb->priority];
}
@@ -143,6 +177,11 @@ u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
break;
#endif
case NL80211_IFTYPE_STATION:
+ /* might be a TDLS station */
+ sta = sta_info_get(sdata, skb->data);
+ if (sta)
+ qos = sta->sta.wme;
+
ra = sdata->u.mgd.bssid;
break;
case NL80211_IFTYPE_ADHOC:
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-01 22:29:35 +0000