/* * mac80211 configuration hooks for cfg80211 * * Copyright 2006-2010 Johannes Berg * * This file is GPLv2 as found in COPYING. */ #include #include #include #include #include #include #include #include #include "ieee80211_i.h" #include "driver-ops.h" #include "cfg.h" #include "rate.h" #include "mesh.h" static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, char *name, enum nl80211_iftype type, u32 *flags, struct vif_params *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct wireless_dev *wdev; struct ieee80211_sub_if_data *sdata; int err; err = ieee80211_if_add(local, name, &wdev, type, params); if (err) return ERR_PTR(err); if (type == NL80211_IFTYPE_MONITOR && flags) { sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); sdata->u.mntr_flags = *flags; } return wdev; } static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) { ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); return 0; } static int ieee80211_change_iface(struct wiphy *wiphy, struct net_device *dev, enum nl80211_iftype type, u32 *flags, struct vif_params *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); int ret; ret = ieee80211_if_change_type(sdata, type); if (ret) return ret; if (type == NL80211_IFTYPE_AP_VLAN && params && params->use_4addr == 0) RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); else if (type == NL80211_IFTYPE_STATION && params && params->use_4addr >= 0) sdata->u.mgd.use_4addr = params->use_4addr; if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { struct ieee80211_local *local = sdata->local; if (ieee80211_sdata_running(sdata)) { /* * Prohibit MONITOR_FLAG_COOK_FRAMES to be * changed while the interface is up. * Else we would need to add a lot of cruft * to update everything: * cooked_mntrs, monitor and all fif_* counters * reconfigure hardware */ if ((*flags & MONITOR_FLAG_COOK_FRAMES) != (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES)) return -EBUSY; ieee80211_adjust_monitor_flags(sdata, -1); sdata->u.mntr_flags = *flags; ieee80211_adjust_monitor_flags(sdata, 1); ieee80211_configure_filter(local); } else { /* * Because the interface is down, ieee80211_do_stop * and ieee80211_do_open take care of "everything" * mentioned in the comment above. */ sdata->u.mntr_flags = *flags; } } return 0; } static int ieee80211_set_noack_map(struct wiphy *wiphy, struct net_device *dev, u16 noack_map) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); sdata->noack_map = noack_map; return 0; } static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, u8 key_idx, bool pairwise, const u8 *mac_addr, struct key_params *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct sta_info *sta = NULL; struct ieee80211_key *key; int err; if (!ieee80211_sdata_running(sdata)) return -ENETDOWN; /* reject WEP and TKIP keys if WEP failed to initialize */ switch (params->cipher) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_TKIP: case WLAN_CIPHER_SUITE_WEP104: if (IS_ERR(sdata->local->wep_tx_tfm)) return -EINVAL; break; default: break; } key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, params->key, params->seq_len, params->seq); if (IS_ERR(key)) return PTR_ERR(key); if (pairwise) key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; mutex_lock(&sdata->local->sta_mtx); if (mac_addr) { if (ieee80211_vif_is_mesh(&sdata->vif)) sta = sta_info_get(sdata, mac_addr); else sta = sta_info_get_bss(sdata, mac_addr); if (!sta) { ieee80211_key_free(sdata->local, key); err = -ENOENT; goto out_unlock; } } err = ieee80211_key_link(key, sdata, sta); if (err) ieee80211_key_free(sdata->local, key); out_unlock: mutex_unlock(&sdata->local->sta_mtx); return err; } static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, u8 key_idx, bool pairwise, const u8 *mac_addr) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct sta_info *sta; struct ieee80211_key *key = NULL; int ret; mutex_lock(&local->sta_mtx); mutex_lock(&local->key_mtx); if (mac_addr) { ret = -ENOENT; sta = sta_info_get_bss(sdata, mac_addr); if (!sta) goto out_unlock; if (pairwise) key = key_mtx_dereference(local, sta->ptk); else key = key_mtx_dereference(local, sta->gtk[key_idx]); } else key = key_mtx_dereference(local, sdata->keys[key_idx]); if (!key) { ret = -ENOENT; goto out_unlock; } __ieee80211_key_free(key); ret = 0; out_unlock: mutex_unlock(&local->key_mtx); mutex_unlock(&local->sta_mtx); return ret; } static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, u8 key_idx, bool pairwise, const u8 *mac_addr, void *cookie, void (*callback)(void *cookie, struct key_params *params)) { struct ieee80211_sub_if_data *sdata; struct sta_info *sta = NULL; u8 seq[6] = {0}; struct key_params params; struct ieee80211_key *key = NULL; u64 pn64; u32 iv32; u16 iv16; int err = -ENOENT; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); if (mac_addr) { sta = sta_info_get_bss(sdata, mac_addr); if (!sta) goto out; if (pairwise) key = rcu_dereference(sta->ptk); else if (key_idx < NUM_DEFAULT_KEYS) key = rcu_dereference(sta->gtk[key_idx]); } else key = rcu_dereference(sdata->keys[key_idx]); if (!key) goto out; memset(¶ms, 0, sizeof(params)); params.cipher = key->conf.cipher; switch (key->conf.cipher) { case WLAN_CIPHER_SUITE_TKIP: iv32 = key->u.tkip.tx.iv32; iv16 = key->u.tkip.tx.iv16; if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) drv_get_tkip_seq(sdata->local, key->conf.hw_key_idx, &iv32, &iv16); seq[0] = iv16 & 0xff; seq[1] = (iv16 >> 8) & 0xff; seq[2] = iv32 & 0xff; seq[3] = (iv32 >> 8) & 0xff; seq[4] = (iv32 >> 16) & 0xff; seq[5] = (iv32 >> 24) & 0xff; params.seq = seq; params.seq_len = 6; break; case WLAN_CIPHER_SUITE_CCMP: pn64 = atomic64_read(&key->u.ccmp.tx_pn); seq[0] = pn64; seq[1] = pn64 >> 8; seq[2] = pn64 >> 16; seq[3] = pn64 >> 24; seq[4] = pn64 >> 32; seq[5] = pn64 >> 40; params.seq = seq; params.seq_len = 6; break; case WLAN_CIPHER_SUITE_AES_CMAC: pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); seq[0] = pn64; seq[1] = pn64 >> 8; seq[2] = pn64 >> 16; seq[3] = pn64 >> 24; seq[4] = pn64 >> 32; seq[5] = pn64 >> 40; params.seq = seq; params.seq_len = 6; break; } params.key = key->conf.key; params.key_len = key->conf.keylen; callback(cookie, ¶ms); err = 0; out: rcu_read_unlock(); return err; } static int ieee80211_config_default_key(struct wiphy *wiphy, struct net_device *dev, u8 key_idx, bool uni, bool multi) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); ieee80211_set_default_key(sdata, key_idx, uni, multi); return 0; } static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, struct net_device *dev, u8 key_idx) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); ieee80211_set_default_mgmt_key(sdata, key_idx); return 0; } static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx) { if (!(rate->flags & RATE_INFO_FLAGS_MCS)) { struct ieee80211_supported_band *sband; sband = sta->local->hw.wiphy->bands[ sta->local->hw.conf.channel->band]; rate->legacy = sband->bitrates[idx].bitrate; } else rate->mcs = idx; } void sta_set_rate_info_tx(struct sta_info *sta, const struct ieee80211_tx_rate *rate, struct rate_info *rinfo) { rinfo->flags = 0; if (rate->flags & IEEE80211_TX_RC_MCS) rinfo->flags |= RATE_INFO_FLAGS_MCS; if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; if (rate->flags & IEEE80211_TX_RC_SHORT_GI) rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; rate_idx_to_bitrate(rinfo, sta, rate->idx); } static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) { struct ieee80211_sub_if_data *sdata = sta->sdata; struct ieee80211_local *local = sdata->local; struct timespec uptime; sinfo->generation = sdata->local->sta_generation; sinfo->filled = STATION_INFO_INACTIVE_TIME | STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES | STATION_INFO_RX_PACKETS | STATION_INFO_TX_PACKETS | STATION_INFO_TX_RETRIES | STATION_INFO_TX_FAILED | STATION_INFO_TX_BITRATE | STATION_INFO_RX_BITRATE | STATION_INFO_RX_DROP_MISC | STATION_INFO_BSS_PARAM | STATION_INFO_CONNECTED_TIME | STATION_INFO_STA_FLAGS | STATION_INFO_BEACON_LOSS_COUNT; do_posix_clock_monotonic_gettime(&uptime); sinfo->connected_time = uptime.tv_sec - sta->last_connected; sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); sinfo->rx_bytes = sta->rx_bytes; sinfo->tx_bytes = sta->tx_bytes; sinfo->rx_packets = sta->rx_packets; sinfo->tx_packets = sta->tx_packets; sinfo->tx_retries = sta->tx_retry_count; sinfo->tx_failed = sta->tx_retry_failed; sinfo->rx_dropped_misc = sta->rx_dropped; sinfo->beacon_loss_count = sta->beacon_loss_count; if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; if (!local->ops->get_rssi || drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal)) sinfo->signal = (s8)sta->last_signal; sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); } sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); sinfo->rxrate.flags = 0; if (sta->last_rx_rate_flag & RX_FLAG_HT) sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS; if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI; rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx); if (ieee80211_vif_is_mesh(&sdata->vif)) { #ifdef CONFIG_MAC80211_MESH sinfo->filled |= STATION_INFO_LLID | STATION_INFO_PLID | STATION_INFO_PLINK_STATE; sinfo->llid = le16_to_cpu(sta->llid); sinfo->plid = le16_to_cpu(sta->plid); sinfo->plink_state = sta->plink_state; if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { sinfo->filled |= STATION_INFO_T_OFFSET; sinfo->t_offset = sta->t_offset; } #endif } sinfo->bss_param.flags = 0; if (sdata->vif.bss_conf.use_cts_prot) sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; if (sdata->vif.bss_conf.use_short_preamble) sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; if (sdata->vif.bss_conf.use_short_slot) sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; sinfo->sta_flags.set = 0; sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | BIT(NL80211_STA_FLAG_WME) | BIT(NL80211_STA_FLAG_MFP) | BIT(NL80211_STA_FLAG_AUTHENTICATED) | BIT(NL80211_STA_FLAG_TDLS_PEER); if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); if (test_sta_flag(sta, WLAN_STA_WME)) sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); if (test_sta_flag(sta, WLAN_STA_MFP)) sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); if (test_sta_flag(sta, WLAN_STA_AUTH)) sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); } static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { "rx_packets", "rx_bytes", "wep_weak_iv_count", "rx_duplicates", "rx_fragments", "rx_dropped", "tx_packets", "tx_bytes", "tx_fragments", "tx_filtered", "tx_retry_failed", "tx_retries", "beacon_loss", "sta_state", "txrate", "rxrate", "signal", "channel", "noise", "ch_time", "ch_time_busy", "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" }; #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) static int ieee80211_get_et_sset_count(struct wiphy *wiphy, struct net_device *dev, int sset) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); int rv = 0; if (sset == ETH_SS_STATS) rv += STA_STATS_LEN; rv += drv_get_et_sset_count(sdata, sset); if (rv == 0) return -EOPNOTSUPP; return rv; } static void ieee80211_get_et_stats(struct wiphy *wiphy, struct net_device *dev, struct ethtool_stats *stats, u64 *data) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct sta_info *sta; struct ieee80211_local *local = sdata->local; struct station_info sinfo; struct survey_info survey; int i, q; #define STA_STATS_SURVEY_LEN 7 memset(data, 0, sizeof(u64) * STA_STATS_LEN); #define ADD_STA_STATS(sta) \ do { \ data[i++] += sta->rx_packets; \ data[i++] += sta->rx_bytes; \ data[i++] += sta->wep_weak_iv_count; \ data[i++] += sta->num_duplicates; \ data[i++] += sta->rx_fragments; \ data[i++] += sta->rx_dropped; \ \ data[i++] += sta->tx_packets; \ data[i++] += sta->tx_bytes; \ data[i++] += sta->tx_fragments; \ data[i++] += sta->tx_filtered_count; \ data[i++] += sta->tx_retry_failed; \ data[i++] += sta->tx_retry_count; \ data[i++] += sta->beacon_loss_count; \ } while (0) /* For Managed stations, find the single station based on BSSID * and use that. For interface types, iterate through all available * stations and add stats for any station that is assigned to this * network device. */ mutex_lock(&local->sta_mtx); if (sdata->vif.type == NL80211_IFTYPE_STATION) { sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid); if (!(sta && !WARN_ON(sta->sdata->dev != dev))) goto do_survey; i = 0; ADD_STA_STATS(sta); data[i++] = sta->sta_state; sinfo.filled = 0; sta_set_sinfo(sta, &sinfo); if (sinfo.filled & STATION_INFO_TX_BITRATE) data[i] = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate); i++; if (sinfo.filled & STATION_INFO_RX_BITRATE) data[i] = 100000 * cfg80211_calculate_bitrate(&sinfo.rxrate); i++; if (sinfo.filled & STATION_INFO_SIGNAL_AVG) data[i] = (u8)sinfo.signal_avg; i++; } else { list_for_each_entry(sta, &local->sta_list, list) { /* Make sure this station belongs to the proper dev */ if (sta->sdata->dev != dev) continue; i = 0; ADD_STA_STATS(sta); } } do_survey: i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; /* Get survey stats for current channel */ q = 0; while (true) { survey.filled = 0; if (drv_get_survey(local, q, &survey) != 0) { survey.filled = 0; break; } if (survey.channel && (local->oper_channel->center_freq == survey.channel->center_freq)) break; q++; } if (survey.filled) data[i++] = survey.channel->center_freq; else data[i++] = 0; if (survey.filled & SURVEY_INFO_NOISE_DBM) data[i++] = (u8)survey.noise; else data[i++] = -1LL; if (survey.filled & SURVEY_INFO_CHANNEL_TIME) data[i++] = survey.channel_time; else data[i++] = -1LL; if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY) data[i++] = survey.channel_time_busy; else data[i++] = -1LL; if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) data[i++] = survey.channel_time_ext_busy; else data[i++] = -1LL; if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX) data[i++] = survey.channel_time_rx; else data[i++] = -1LL; if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX) data[i++] = survey.channel_time_tx; else data[i++] = -1LL; mutex_unlock(&local->sta_mtx); if (WARN_ON(i != STA_STATS_LEN)) return; drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); } static void ieee80211_get_et_strings(struct wiphy *wiphy, struct net_device *dev, u32 sset, u8 *data) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); int sz_sta_stats = 0; if (sset == ETH_SS_STATS) { sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats); } drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); } static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, int idx, u8 *mac, struct station_info *sinfo) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct sta_info *sta; int ret = -ENOENT; mutex_lock(&local->sta_mtx); sta = sta_info_get_by_idx(sdata, idx); if (sta) { ret = 0; memcpy(mac, sta->sta.addr, ETH_ALEN); sta_set_sinfo(sta, sinfo); } mutex_unlock(&local->sta_mtx); return ret; } static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, int idx, struct survey_info *survey) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); return drv_get_survey(local, idx, survey); } static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, u8 *mac, struct station_info *sinfo) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct sta_info *sta; int ret = -ENOENT; mutex_lock(&local->sta_mtx); sta = sta_info_get_bss(sdata, mac); if (sta) { ret = 0; sta_set_sinfo(sta, sinfo); } mutex_unlock(&local->sta_mtx); return ret; } static int ieee80211_set_channel(struct wiphy *wiphy, struct net_device *netdev, struct ieee80211_channel *chan, enum nl80211_channel_type channel_type) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = NULL; if (netdev) sdata = IEEE80211_DEV_TO_SUB_IF(netdev); switch (ieee80211_get_channel_mode(local, NULL)) { case CHAN_MODE_HOPPING: return -EBUSY; case CHAN_MODE_FIXED: if (local->oper_channel != chan || (!sdata && local->_oper_channel_type != channel_type)) return -EBUSY; if (!sdata && local->_oper_channel_type == channel_type) return 0; break; case CHAN_MODE_UNDEFINED: break; } if (!ieee80211_set_channel_type(local, sdata, channel_type)) return -EBUSY; local->oper_channel = chan; /* auto-detects changes */ ieee80211_hw_config(local, 0); return 0; } static int ieee80211_set_monitor_channel(struct wiphy *wiphy, struct ieee80211_channel *chan, enum nl80211_channel_type channel_type) { return ieee80211_set_channel(wiphy, NULL, chan, channel_type); } static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, const u8 *resp, size_t resp_len) { struct sk_buff *new, *old; if (!resp || !resp_len) return 1; old = rtnl_dereference(sdata->u.ap.probe_resp); new = dev_alloc_skb(resp_len); if (!new) return -ENOMEM; memcpy(skb_put(new, resp_len), resp, resp_len); rcu_assign_pointer(sdata->u.ap.probe_resp, new); if (old) { /* TODO: use call_rcu() */ synchronize_rcu(); dev_kfree_skb(old); } return 0; } static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, struct cfg80211_beacon_data *params) { struct beacon_data *new, *old; int new_head_len, new_tail_len; int size, err; u32 changed = BSS_CHANGED_BEACON; old = rtnl_dereference(sdata->u.ap.beacon); /* Need to have a beacon head if we don't have one yet */ if (!params->head && !old) return -EINVAL; /* new or old head? */ if (params->head) new_head_len = params->head_len; else new_head_len = old->head_len; /* new or old tail? */ if (params->tail || !old) /* params->tail_len will be zero for !params->tail */ new_tail_len = params->tail_len; else new_tail_len = old->tail_len; size = sizeof(*new) + new_head_len + new_tail_len; new = kzalloc(size, GFP_KERNEL); if (!new) return -ENOMEM; /* start filling the new info now */ /* * pointers go into the block we allocated, * memory is | beacon_data | head | tail | */ new->head = ((u8 *) new) + sizeof(*new); new->tail = new->head + new_head_len; new->head_len = new_head_len; new->tail_len = new_tail_len; /* copy in head */ if (params->head) memcpy(new->head, params->head, new_head_len); else memcpy(new->head, old->head, new_head_len); /* copy in optional tail */ if (params->tail) memcpy(new->tail, params->tail, new_tail_len); else if (old) memcpy(new->tail, old->tail, new_tail_len); err = ieee80211_set_probe_resp(sdata, params->probe_resp, params->probe_resp_len); if (err < 0) return err; if (err == 0) changed |= BSS_CHANGED_AP_PROBE_RESP; rcu_assign_pointer(sdata->u.ap.beacon, new); if (old) kfree_rcu(old, rcu_head); return changed; } static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ap_settings *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct beacon_data *old; struct ieee80211_sub_if_data *vlan; u32 changed = BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON | BSS_CHANGED_SSID; int err; old = rtnl_dereference(sdata->u.ap.beacon); if (old) return -EALREADY; err = ieee80211_set_channel(wiphy, dev, params->channel, params->channel_type); if (err) return err; /* * Apply control port protocol, this allows us to * not encrypt dynamic WEP control frames. */ sdata->control_port_protocol = params->crypto.control_port_ethertype; sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { vlan->control_port_protocol = params->crypto.control_port_ethertype; vlan->control_port_no_encrypt = params->crypto.control_port_no_encrypt; } sdata->vif.bss_conf.beacon_int = params->beacon_interval; sdata->vif.bss_conf.dtim_period = params->dtim_period; sdata->vif.bss_conf.ssid_len = params->ssid_len; if (params->ssid_len) memcpy(sdata->vif.bss_conf.ssid, params->ssid, params->ssid_len); sdata->vif.bss_conf.hidden_ssid = (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); err = ieee80211_assign_beacon(sdata, ¶ms->beacon); if (err < 0) return err; changed |= err; ieee80211_bss_info_change_notify(sdata, changed); netif_carrier_on(dev); list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) netif_carrier_on(vlan->dev); return 0; } static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_beacon_data *params) { struct ieee80211_sub_if_data *sdata; struct beacon_data *old; int err; sdata = IEEE80211_DEV_TO_SUB_IF(dev); old = rtnl_dereference(sdata->u.ap.beacon); if (!old) return -ENOENT; err = ieee80211_assign_beacon(sdata, params); if (err < 0) return err; ieee80211_bss_info_change_notify(sdata, err); return 0; } static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) { struct ieee80211_sub_if_data *sdata, *vlan; struct beacon_data *old; sdata = IEEE80211_DEV_TO_SUB_IF(dev); old = rtnl_dereference(sdata->u.ap.beacon); if (!old) return -ENOENT; list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) netif_carrier_off(vlan->dev); netif_carrier_off(dev); RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); kfree_rcu(old, rcu_head); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); return 0; } /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ struct iapp_layer2_update { u8 da[ETH_ALEN]; /* broadcast */ u8 sa[ETH_ALEN]; /* STA addr */ __be16 len; /* 6 */ u8 dsap; /* 0 */ u8 ssap; /* 0 */ u8 control; u8 xid_info[3]; } __packed; static void ieee80211_send_layer2_update(struct sta_info *sta) { struct iapp_layer2_update *msg; struct sk_buff *skb; /* Send Level 2 Update Frame to update forwarding tables in layer 2 * bridge devices */ skb = dev_alloc_skb(sizeof(*msg)); if (!skb) return; msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ memset(msg->da, 0xff, ETH_ALEN); memcpy(msg->sa, sta->sta.addr, ETH_ALEN); msg->len = htons(6); msg->dsap = 0; msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ msg->control = 0xaf; /* XID response lsb.1111F101. * F=0 (no poll command; unsolicited frame) */ msg->xid_info[0] = 0x81; /* XID format identifier */ msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ skb->dev = sta->sdata->dev; skb->protocol = eth_type_trans(skb, sta->sdata->dev); memset(skb->cb, 0, sizeof(skb->cb)); netif_rx_ni(skb); } static int sta_apply_parameters(struct ieee80211_local *local, struct sta_info *sta, struct station_parameters *params) { int ret = 0; u32 rates; int i, j; struct ieee80211_supported_band *sband; struct ieee80211_sub_if_data *sdata = sta->sdata; u32 mask, set; sband = local->hw.wiphy->bands[local->oper_channel->band]; mask = params->sta_flags_mask; set = params->sta_flags_set; /* * In mesh mode, we can clear AUTHENTICATED flag but must * also make ASSOCIATED follow appropriately for the driver * API. See also below, after AUTHORIZED changes. */ if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) { /* cfg80211 should not allow this in non-mesh modes */ if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif))) return -EINVAL; if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && !test_sta_flag(sta, WLAN_STA_AUTH)) { ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); if (ret) return ret; ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); if (ret) return ret; } } if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); if (ret) return ret; } if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) { /* cfg80211 should not allow this in non-mesh modes */ if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif))) return -EINVAL; if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && test_sta_flag(sta, WLAN_STA_AUTH)) { ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); if (ret) return ret; ret = sta_info_move_state(sta, IEEE80211_STA_NONE); if (ret) return ret; } } if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); else clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); } if (mask & BIT(NL80211_STA_FLAG_WME)) { if (set & BIT(NL80211_STA_FLAG_WME)) { set_sta_flag(sta, WLAN_STA_WME); sta->sta.wme = true; } else { clear_sta_flag(sta, WLAN_STA_WME); sta->sta.wme = false; } } if (mask & BIT(NL80211_STA_FLAG_MFP)) { if (set & BIT(NL80211_STA_FLAG_MFP)) set_sta_flag(sta, WLAN_STA_MFP); else clear_sta_flag(sta, WLAN_STA_MFP); } if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) set_sta_flag(sta, WLAN_STA_TDLS_PEER); else clear_sta_flag(sta, WLAN_STA_TDLS_PEER); } if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { sta->sta.uapsd_queues = params->uapsd_queues; sta->sta.max_sp = params->max_sp; } /* * cfg80211 validates this (1-2007) and allows setting the AID * only when creating a new station entry */ if (params->aid) sta->sta.aid = params->aid; /* * FIXME: updating the following information is racy when this * function is called from ieee80211_change_station(). * However, all this information should be static so * maybe we should just reject attemps to change it. */ if (params->listen_interval >= 0) sta->listen_interval = params->listen_interval; if (params->supported_rates) { rates = 0; for (i = 0; i < params->supported_rates_len; i++) { int rate = (params->supported_rates[i] & 0x7f) * 5; for (j = 0; j < sband->n_bitrates; j++) { if (sband->bitrates[j].bitrate == rate) rates |= BIT(j); } } sta->sta.supp_rates[local->oper_channel->band] = rates; } if (params->ht_capa) ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, params->ht_capa, &sta->sta.ht_cap); if (ieee80211_vif_is_mesh(&sdata->vif)) { #ifdef CONFIG_MAC80211_MESH if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) switch (params->plink_state) { case NL80211_PLINK_LISTEN: case NL80211_PLINK_ESTAB: case NL80211_PLINK_BLOCKED: sta->plink_state = params->plink_state; break; default: /* nothing */ break; } else switch (params->plink_action) { case PLINK_ACTION_OPEN: mesh_plink_open(sta); break; case PLINK_ACTION_BLOCK: mesh_plink_block(sta); break; } #endif } return 0; } static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, u8 *mac, struct station_parameters *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct sta_info *sta; struct ieee80211_sub_if_data *sdata; int err; int layer2_update; if (params->vlan) { sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && sdata->vif.type != NL80211_IFTYPE_AP) return -EINVAL; } else sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (ether_addr_equal(mac, sdata->vif.addr)) return -EINVAL; if (is_multicast_ether_addr(mac)) return -EINVAL; sta = sta_info_alloc(sdata, mac, GFP_KERNEL); if (!sta) return -ENOMEM; sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); err = sta_apply_parameters(local, sta, params); if (err) { sta_info_free(local, sta); return err; } /* * for TDLS, rate control should be initialized only when supported * rates are known. */ if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) rate_control_rate_init(sta); layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || sdata->vif.type == NL80211_IFTYPE_AP; err = sta_info_insert_rcu(sta); if (err) { rcu_read_unlock(); return err; } if (layer2_update) ieee80211_send_layer2_update(sta); rcu_read_unlock(); return 0; } static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, u8 *mac) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata; sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (mac) return sta_info_destroy_addr_bss(sdata, mac); sta_info_flush(local, sdata); return 0; } static int ieee80211_change_station(struct wiphy *wiphy, struct net_device *dev, u8 *mac, struct station_parameters *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wiphy_priv(wiphy); struct sta_info *sta; struct ieee80211_sub_if_data *vlansdata; int err; mutex_lock(&local->sta_mtx); sta = sta_info_get_bss(sdata, mac); if (!sta) { mutex_unlock(&local->sta_mtx); return -ENOENT; } /* in station mode, supported rates are only valid with TDLS */ if (sdata->vif.type == NL80211_IFTYPE_STATION && params->supported_rates && !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { mutex_unlock(&local->sta_mtx); return -EINVAL; } if (params->vlan && params->vlan != sta->sdata->dev) { bool prev_4addr = false; bool new_4addr = false; vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN && vlansdata->vif.type != NL80211_IFTYPE_AP) { mutex_unlock(&local->sta_mtx); return -EINVAL; } if (params->vlan->ieee80211_ptr->use_4addr) { if (vlansdata->u.vlan.sta) { mutex_unlock(&local->sta_mtx); return -EBUSY; } rcu_assign_pointer(vlansdata->u.vlan.sta, sta); new_4addr = true; } if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && sta->sdata->u.vlan.sta) { rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL); prev_4addr = true; } sta->sdata = vlansdata; if (sta->sta_state == IEEE80211_STA_AUTHORIZED && prev_4addr != new_4addr) { if (new_4addr) atomic_dec(&sta->sdata->bss->num_mcast_sta); else atomic_inc(&sta->sdata->bss->num_mcast_sta); } ieee80211_send_layer2_update(sta); } err = sta_apply_parameters(local, sta, params); if (err) { mutex_unlock(&local->sta_mtx); return err; } if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates) rate_control_rate_init(sta); mutex_unlock(&local->sta_mtx); if (sdata->vif.type == NL80211_IFTYPE_STATION && params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) ieee80211_recalc_ps(local, -1); return 0; } #ifdef CONFIG_MAC80211_MESH static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, u8 *dst, u8 *next_hop) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; struct sta_info *sta; int err; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); sta = sta_info_get(sdata, next_hop); if (!sta) { rcu_read_unlock(); return -ENOENT; } err = mesh_path_add(dst, sdata); if (err) { rcu_read_unlock(); return err; } mpath = mesh_path_lookup(dst, sdata); if (!mpath) { rcu_read_unlock(); return -ENXIO; } mesh_path_fix_nexthop(mpath, sta); rcu_read_unlock(); return 0; } static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, u8 *dst) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (dst) return mesh_path_del(dst, sdata); mesh_path_flush_by_iface(sdata); return 0; } static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, u8 *dst, u8 *next_hop) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; struct sta_info *sta; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); sta = sta_info_get(sdata, next_hop); if (!sta) { rcu_read_unlock(); return -ENOENT; } mpath = mesh_path_lookup(dst, sdata); if (!mpath) { rcu_read_unlock(); return -ENOENT; } mesh_path_fix_nexthop(mpath, sta); rcu_read_unlock(); return 0; } static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, struct mpath_info *pinfo) { struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); if (next_hop_sta) memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); else memset(next_hop, 0, ETH_ALEN); pinfo->generation = mesh_paths_generation; pinfo->filled = MPATH_INFO_FRAME_QLEN | MPATH_INFO_SN | MPATH_INFO_METRIC | MPATH_INFO_EXPTIME | MPATH_INFO_DISCOVERY_TIMEOUT | MPATH_INFO_DISCOVERY_RETRIES | MPATH_INFO_FLAGS; pinfo->frame_qlen = mpath->frame_queue.qlen; pinfo->sn = mpath->sn; pinfo->metric = mpath->metric; if (time_before(jiffies, mpath->exp_time)) pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); pinfo->discovery_timeout = jiffies_to_msecs(mpath->discovery_timeout); pinfo->discovery_retries = mpath->discovery_retries; pinfo->flags = 0; if (mpath->flags & MESH_PATH_ACTIVE) pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; if (mpath->flags & MESH_PATH_RESOLVING) pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; if (mpath->flags & MESH_PATH_SN_VALID) pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; if (mpath->flags & MESH_PATH_FIXED) pinfo->flags |= NL80211_MPATH_FLAG_FIXED; if (mpath->flags & MESH_PATH_RESOLVING) pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; pinfo->flags = mpath->flags; } static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, u8 *dst, u8 *next_hop, struct mpath_info *pinfo) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); mpath = mesh_path_lookup(dst, sdata); if (!mpath) { rcu_read_unlock(); return -ENOENT; } memcpy(dst, mpath->dst, ETH_ALEN); mpath_set_pinfo(mpath, next_hop, pinfo); rcu_read_unlock(); return 0; } static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, int idx, u8 *dst, u8 *next_hop, struct mpath_info *pinfo) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); mpath = mesh_path_lookup_by_idx(idx, sdata); if (!mpath) { rcu_read_unlock(); return -ENOENT; } memcpy(dst, mpath->dst, ETH_ALEN); mpath_set_pinfo(mpath, next_hop, pinfo); rcu_read_unlock(); return 0; } static int ieee80211_get_mesh_config(struct wiphy *wiphy, struct net_device *dev, struct mesh_config *conf) { struct ieee80211_sub_if_data *sdata; sdata = IEEE80211_DEV_TO_SUB_IF(dev); memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); return 0; } static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) { return (mask >> (parm-1)) & 0x1; } static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, const struct mesh_setup *setup) { u8 *new_ie; const u8 *old_ie; struct ieee80211_sub_if_data *sdata = container_of(ifmsh, struct ieee80211_sub_if_data, u.mesh); /* allocate information elements */ new_ie = NULL; old_ie = ifmsh->ie; if (setup->ie_len) { new_ie = kmemdup(setup->ie, setup->ie_len, GFP_KERNEL); if (!new_ie) return -ENOMEM; } ifmsh->ie_len = setup->ie_len; ifmsh->ie = new_ie; kfree(old_ie); /* now copy the rest of the setup parameters */ ifmsh->mesh_id_len = setup->mesh_id_len; memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); ifmsh->mesh_sp_id = setup->sync_method; ifmsh->mesh_pp_id = setup->path_sel_proto; ifmsh->mesh_pm_id = setup->path_metric; ifmsh->security = IEEE80211_MESH_SEC_NONE; if (setup->is_authenticated) ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; if (setup->is_secure) ifmsh->security |= IEEE80211_MESH_SEC_SECURED; /* mcast rate setting in Mesh Node */ memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, sizeof(setup->mcast_rate)); return 0; } static int ieee80211_update_mesh_config(struct wiphy *wiphy, struct net_device *dev, u32 mask, const struct mesh_config *nconf) { struct mesh_config *conf; struct ieee80211_sub_if_data *sdata; struct ieee80211_if_mesh *ifmsh; sdata = IEEE80211_DEV_TO_SUB_IF(dev); ifmsh = &sdata->u.mesh; /* Set the config options which we are interested in setting */ conf = &(sdata->u.mesh.mshcfg); if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) conf->dot11MeshTTL = nconf->dot11MeshTTL; if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) conf->element_ttl = nconf->element_ttl; if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) conf->auto_open_plinks = nconf->auto_open_plinks; if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) conf->dot11MeshNbrOffsetMaxNeighbor = nconf->dot11MeshNbrOffsetMaxNeighbor; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) conf->dot11MeshHWMPmaxPREQretries = nconf->dot11MeshHWMPmaxPREQretries; if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) conf->path_refresh_time = nconf->path_refresh_time; if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) conf->min_discovery_timeout = nconf->min_discovery_timeout; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) conf->dot11MeshHWMPactivePathTimeout = nconf->dot11MeshHWMPactivePathTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) conf->dot11MeshHWMPpreqMinInterval = nconf->dot11MeshHWMPpreqMinInterval; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) conf->dot11MeshHWMPperrMinInterval = nconf->dot11MeshHWMPperrMinInterval; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, mask)) conf->dot11MeshHWMPnetDiameterTraversalTime = nconf->dot11MeshHWMPnetDiameterTraversalTime; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; ieee80211_mesh_root_setup(ifmsh); } if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { /* our current gate announcement implementation rides on root * announcements, so require this ifmsh to also be a root node * */ if (nconf->dot11MeshGateAnnouncementProtocol && !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; ieee80211_mesh_root_setup(ifmsh); } conf->dot11MeshGateAnnouncementProtocol = nconf->dot11MeshGateAnnouncementProtocol; } if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) conf->dot11MeshHWMPRannInterval = nconf->dot11MeshHWMPRannInterval; if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) conf->dot11MeshForwarding = nconf->dot11MeshForwarding; if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { /* our RSSI threshold implementation is supported only for * devices that report signal in dBm. */ if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) return -ENOTSUPP; conf->rssi_threshold = nconf->rssi_threshold; } if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { conf->ht_opmode = nconf->ht_opmode; sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); } if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) conf->dot11MeshHWMPactivePathToRootTimeout = nconf->dot11MeshHWMPactivePathToRootTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) conf->dot11MeshHWMProotInterval = nconf->dot11MeshHWMProotInterval; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) conf->dot11MeshHWMPconfirmationInterval = nconf->dot11MeshHWMPconfirmationInterval; return 0; } static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, const struct mesh_config *conf, const struct mesh_setup *setup) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; int err; memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); err = copy_mesh_setup(ifmsh, setup); if (err) return err; err = ieee80211_set_channel(wiphy, dev, setup->channel, setup->channel_type); if (err) return err; ieee80211_start_mesh(sdata); return 0; } static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); ieee80211_stop_mesh(sdata); return 0; } #endif static int ieee80211_change_bss(struct wiphy *wiphy, struct net_device *dev, struct bss_parameters *params) { struct ieee80211_sub_if_data *sdata; u32 changed = 0; sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (params->use_cts_prot >= 0) { sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; changed |= BSS_CHANGED_ERP_CTS_PROT; } if (params->use_short_preamble >= 0) { sdata->vif.bss_conf.use_short_preamble = params->use_short_preamble; changed |= BSS_CHANGED_ERP_PREAMBLE; } if (!sdata->vif.bss_conf.use_short_slot && sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) { sdata->vif.bss_conf.use_short_slot = true; changed |= BSS_CHANGED_ERP_SLOT; } if (params->use_short_slot_time >= 0) { sdata->vif.bss_conf.use_short_slot = params->use_short_slot_time; changed |= BSS_CHANGED_ERP_SLOT; } if (params->basic_rates) { int i, j; u32 rates = 0; struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_supported_band *sband = wiphy->bands[local->oper_channel->band]; for (i = 0; i < params->basic_rates_len; i++) { int rate = (params->basic_rates[i] & 0x7f) * 5; for (j = 0; j < sband->n_bitrates; j++) { if (sband->bitrates[j].bitrate == rate) rates |= BIT(j); } } sdata->vif.bss_conf.basic_rates = rates; changed |= BSS_CHANGED_BASIC_RATES; } if (params->ap_isolate >= 0) { if (params->ap_isolate) sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; else sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; } if (params->ht_opmode >= 0) { sdata->vif.bss_conf.ht_operation_mode = (u16) params->ht_opmode; changed |= BSS_CHANGED_HT; } ieee80211_bss_info_change_notify(sdata, changed); return 0; } static int ieee80211_set_txq_params(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_txq_params *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_tx_queue_params p; if (!local->ops->conf_tx) return -EOPNOTSUPP; if (local->hw.queues < IEEE80211_NUM_ACS) return -EOPNOTSUPP; memset(&p, 0, sizeof(p)); p.aifs = params->aifs; p.cw_max = params->cwmax; p.cw_min = params->cwmin; p.txop = params->txop; /* * Setting tx queue params disables u-apsd because it's only * called in master mode. */ p.uapsd = false; sdata->tx_conf[params->ac] = p; if (drv_conf_tx(local, sdata, params->ac, &p)) { wiphy_debug(local->hw.wiphy, "failed to set TX queue parameters for AC %d\n", params->ac); return -EINVAL; } ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); return 0; } #ifdef CONFIG_PM static int ieee80211_suspend(struct wiphy *wiphy, struct cfg80211_wowlan *wowlan) { return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); } static int ieee80211_resume(struct wiphy *wiphy) { return __ieee80211_resume(wiphy_priv(wiphy)); } #else #define ieee80211_suspend NULL #define ieee80211_resume NULL #endif static int ieee80211_scan(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_scan_request *req) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); switch (ieee80211_vif_type_p2p(&sdata->vif)) { case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_P2P_CLIENT: break; case NL80211_IFTYPE_P2P_GO: if (sdata->local->ops->hw_scan) break; /* * FIXME: implement NoA while scanning in software, * for now fall through to allow scanning only when * beaconing hasn't been configured yet */ case NL80211_IFTYPE_AP: if (sdata->u.ap.beacon) return -EOPNOTSUPP; break; default: return -EOPNOTSUPP; } return ieee80211_request_scan(sdata, req); } static int ieee80211_sched_scan_start(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_sched_scan_request *req) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (!sdata->local->ops->sched_scan_start) return -EOPNOTSUPP; return ieee80211_request_sched_scan_start(sdata, req); } static int ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (!sdata->local->ops->sched_scan_stop) return -EOPNOTSUPP; return ieee80211_request_sched_scan_stop(sdata); } static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_auth_request *req) { return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_assoc_request *req) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); switch (ieee80211_get_channel_mode(local, sdata)) { case CHAN_MODE_HOPPING: return -EBUSY; case CHAN_MODE_FIXED: if (local->oper_channel == req->bss->channel) break; return -EBUSY; case CHAN_MODE_UNDEFINED: break; } return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_deauth_request *req) { return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_disassoc_request *req) { return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ibss_params *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); switch (ieee80211_get_channel_mode(local, sdata)) { case CHAN_MODE_HOPPING: return -EBUSY; case CHAN_MODE_FIXED: if (!params->channel_fixed) return -EBUSY; if (local->oper_channel == params->channel) break; return -EBUSY; case CHAN_MODE_UNDEFINED: break; } return ieee80211_ibss_join(sdata, params); } static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); return ieee80211_ibss_leave(sdata); } static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) { struct ieee80211_local *local = wiphy_priv(wiphy); int err; if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { err = drv_set_frag_threshold(local, wiphy->frag_threshold); if (err) return err; } if (changed & WIPHY_PARAM_COVERAGE_CLASS) { err = drv_set_coverage_class(local, wiphy->coverage_class); if (err) return err; } if (changed & WIPHY_PARAM_RTS_THRESHOLD) { err = drv_set_rts_threshold(local, wiphy->rts_threshold); if (err) return err; } if (changed & WIPHY_PARAM_RETRY_SHORT) local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; if (changed & WIPHY_PARAM_RETRY_LONG) local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; if (changed & (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); return 0; } static int ieee80211_set_tx_power(struct wiphy *wiphy, enum nl80211_tx_power_setting type, int mbm) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_channel *chan = local->hw.conf.channel; u32 changes = 0; switch (type) { case NL80211_TX_POWER_AUTOMATIC: local->user_power_level = -1; break; case NL80211_TX_POWER_LIMITED: if (mbm < 0 || (mbm % 100)) return -EOPNOTSUPP; local->user_power_level = MBM_TO_DBM(mbm); break; case NL80211_TX_POWER_FIXED: if (mbm < 0 || (mbm % 100)) return -EOPNOTSUPP; /* TODO: move to cfg80211 when it knows the channel */ if (MBM_TO_DBM(mbm) > chan->max_power) return -EINVAL; local->user_power_level = MBM_TO_DBM(mbm); break; } ieee80211_hw_config(local, changes); return 0; } static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm) { struct ieee80211_local *local = wiphy_priv(wiphy); *dbm = local->hw.conf.power_level; return 0; } static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, const u8 *addr) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); return 0; } static void ieee80211_rfkill_poll(struct wiphy *wiphy) { struct ieee80211_local *local = wiphy_priv(wiphy); drv_rfkill_poll(local); } #ifdef CONFIG_NL80211_TESTMODE static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) { struct ieee80211_local *local = wiphy_priv(wiphy); if (!local->ops->testmode_cmd) return -EOPNOTSUPP; return local->ops->testmode_cmd(&local->hw, data, len); } static int ieee80211_testmode_dump(struct wiphy *wiphy, struct sk_buff *skb, struct netlink_callback *cb, void *data, int len) { struct ieee80211_local *local = wiphy_priv(wiphy); if (!local->ops->testmode_dump) return -EOPNOTSUPP; return local->ops->testmode_dump(&local->hw, skb, cb, data, len); } #endif int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, enum ieee80211_smps_mode smps_mode) { const u8 *ap; enum ieee80211_smps_mode old_req; int err; lockdep_assert_held(&sdata->u.mgd.mtx); old_req = sdata->u.mgd.req_smps; sdata->u.mgd.req_smps = smps_mode; if (old_req == smps_mode && smps_mode != IEEE80211_SMPS_AUTOMATIC) return 0; /* * If not associated, or current association is not an HT * association, there's no need to send an action frame. */ if (!sdata->u.mgd.associated || sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) { mutex_lock(&sdata->local->iflist_mtx); ieee80211_recalc_smps(sdata->local); mutex_unlock(&sdata->local->iflist_mtx); return 0; } ap = sdata->u.mgd.associated->bssid; if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { if (sdata->u.mgd.powersave) smps_mode = IEEE80211_SMPS_DYNAMIC; else smps_mode = IEEE80211_SMPS_OFF; } /* send SM PS frame to AP */ err = ieee80211_send_smps_action(sdata, smps_mode, ap, ap); if (err) sdata->u.mgd.req_smps = old_req; return err; } static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, bool enabled, int timeout) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); if (sdata->vif.type != NL80211_IFTYPE_STATION) return -EOPNOTSUPP; if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) return -EOPNOTSUPP; if (enabled == sdata->u.mgd.powersave && timeout == local->dynamic_ps_forced_timeout) return 0; sdata->u.mgd.powersave = enabled; local->dynamic_ps_forced_timeout = timeout; /* no change, but if automatic follow powersave */ mutex_lock(&sdata->u.mgd.mtx); __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); mutex_unlock(&sdata->u.mgd.mtx); if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); ieee80211_recalc_ps(local, -1); return 0; } static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, struct net_device *dev, s32 rssi_thold, u32 rssi_hyst) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_vif *vif = &sdata->vif; struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; if (rssi_thold == bss_conf->cqm_rssi_thold && rssi_hyst == bss_conf->cqm_rssi_hyst) return 0; bss_conf->cqm_rssi_thold = rssi_thold; bss_conf->cqm_rssi_hyst = rssi_hyst; /* tell the driver upon association, unless already associated */ if (sdata->u.mgd.associated && sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); return 0; } static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, struct net_device *dev, const u8 *addr, const struct cfg80211_bitrate_mask *mask) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); int i, ret; if (!ieee80211_sdata_running(sdata)) return -ENETDOWN; if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { ret = drv_set_bitrate_mask(local, sdata, mask); if (ret) return ret; } for (i = 0; i < IEEE80211_NUM_BANDS; i++) { sdata->rc_rateidx_mask[i] = mask->control[i].legacy; memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs, sizeof(mask->control[i].mcs)); } return 0; } static int ieee80211_start_roc_work(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata, struct ieee80211_channel *channel, enum nl80211_channel_type channel_type, unsigned int duration, u64 *cookie, struct sk_buff *txskb) { struct ieee80211_roc_work *roc, *tmp; bool queued = false; int ret; lockdep_assert_held(&local->mtx); roc = kzalloc(sizeof(*roc), GFP_KERNEL); if (!roc) return -ENOMEM; roc->chan = channel; roc->chan_type = channel_type; roc->duration = duration; roc->req_duration = duration; roc->frame = txskb; roc->mgmt_tx_cookie = (unsigned long)txskb; roc->sdata = sdata; INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); INIT_LIST_HEAD(&roc->dependents); /* if there's one pending or we're scanning, queue this one */ if (!list_empty(&local->roc_list) || local->scanning) goto out_check_combine; /* if not HW assist, just queue & schedule work */ if (!local->ops->remain_on_channel) { ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); goto out_queue; } /* otherwise actually kick it off here (for error handling) */ /* * If the duration is zero, then the driver * wouldn't actually do anything. Set it to * 10 for now. * * TODO: cancel the off-channel operation * when we get the SKB's TX status and * the wait time was zero before. */ if (!duration) duration = 10; ret = drv_remain_on_channel(local, channel, channel_type, duration); if (ret) { kfree(roc); return ret; } roc->started = true; goto out_queue; out_check_combine: list_for_each_entry(tmp, &local->roc_list, list) { if (tmp->chan != channel || tmp->chan_type != channel_type) continue; /* * Extend this ROC if possible: * * If it hasn't started yet, just increase the duration * and add the new one to the list of dependents. */ if (!tmp->started) { list_add_tail(&roc->list, &tmp->dependents); tmp->duration = max(tmp->duration, roc->duration); queued = true; break; } /* If it has already started, it's more difficult ... */ if (local->ops->remain_on_channel) { unsigned long j = jiffies; /* * In the offloaded ROC case, if it hasn't begun, add * this new one to the dependent list to be handled * when the the master one begins. If it has begun, * check that there's still a minimum time left and * if so, start this one, transmitting the frame, but * add it to the list directly after this one with a * a reduced time so we'll ask the driver to execute * it right after finishing the previous one, in the * hope that it'll also be executed right afterwards, * effectively extending the old one. * If there's no minimum time left, just add it to the * normal list. */ if (!tmp->hw_begun) { list_add_tail(&roc->list, &tmp->dependents); queued = true; break; } if (time_before(j + IEEE80211_ROC_MIN_LEFT, tmp->hw_start_time + msecs_to_jiffies(tmp->duration))) { int new_dur; ieee80211_handle_roc_started(roc); new_dur = roc->duration - jiffies_to_msecs(tmp->hw_start_time + msecs_to_jiffies( tmp->duration) - j); if (new_dur > 0) { /* add right after tmp */ list_add(&roc->list, &tmp->list); } else { list_add_tail(&roc->list, &tmp->dependents); } queued = true; } } else if (del_timer_sync(&tmp->work.timer)) { unsigned long new_end; /* * In the software ROC case, cancel the timer, if * that fails then the finish work is already * queued/pending and thus we queue the new ROC * normally, if that succeeds then we can extend * the timer duration and TX the frame (if any.) */ list_add_tail(&roc->list, &tmp->dependents); queued = true; new_end = jiffies + msecs_to_jiffies(roc->duration); /* ok, it was started & we canceled timer */ if (time_after(new_end, tmp->work.timer.expires)) mod_timer(&tmp->work.timer, new_end); else add_timer(&tmp->work.timer); ieee80211_handle_roc_started(roc); } break; } out_queue: if (!queued) list_add_tail(&roc->list, &local->roc_list); /* * cookie is either the roc (for normal roc) * or the SKB (for mgmt TX) */ if (txskb) *cookie = (unsigned long)txskb; else *cookie = (unsigned long)roc; return 0; } static int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, struct ieee80211_channel *chan, enum nl80211_channel_type channel_type, unsigned int duration, u64 *cookie) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_local *local = sdata->local; int ret; mutex_lock(&local->mtx); ret = ieee80211_start_roc_work(local, sdata, chan, channel_type, duration, cookie, NULL); mutex_unlock(&local->mtx); return ret; } static int ieee80211_cancel_roc(struct ieee80211_local *local, u64 cookie, bool mgmt_tx) { struct ieee80211_roc_work *roc, *tmp, *found = NULL; int ret; mutex_lock(&local->mtx); list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { struct ieee80211_roc_work *dep, *tmp2; list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { if (!mgmt_tx && (unsigned long)dep != cookie) continue; else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) continue; /* found dependent item -- just remove it */ list_del(&dep->list); mutex_unlock(&local->mtx); ieee80211_roc_notify_destroy(dep); return 0; } if (!mgmt_tx && (unsigned long)roc != cookie) continue; else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) continue; found = roc; break; } if (!found) { mutex_unlock(&local->mtx); return -ENOENT; } /* * We found the item to cancel, so do that. Note that it * may have dependents, which we also cancel (and send * the expired signal for.) Not doing so would be quite * tricky here, but we may need to fix it later. */ if (local->ops->remain_on_channel) { if (found->started) { ret = drv_cancel_remain_on_channel(local); if (WARN_ON_ONCE(ret)) { mutex_unlock(&local->mtx); return ret; } } list_del(&found->list); if (found->started) ieee80211_start_next_roc(local); mutex_unlock(&local->mtx); ieee80211_roc_notify_destroy(found); } else { /* work may be pending so use it all the time */ found->abort = true; ieee80211_queue_delayed_work(&local->hw, &found->work, 0); mutex_unlock(&local->mtx); /* work will clean up etc */ flush_delayed_work(&found->work); } return 0; } static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, u64 cookie) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_local *local = sdata->local; return ieee80211_cancel_roc(local, cookie, false); } static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, struct ieee80211_channel *chan, bool offchan, enum nl80211_channel_type channel_type, bool channel_type_valid, unsigned int wait, const u8 *buf, size_t len, bool no_cck, bool dont_wait_for_ack, u64 *cookie) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_local *local = sdata->local; struct sk_buff *skb; struct sta_info *sta; const struct ieee80211_mgmt *mgmt = (void *)buf; bool need_offchan = false; u32 flags; int ret; if (dont_wait_for_ack) flags = IEEE80211_TX_CTL_NO_ACK; else flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | IEEE80211_TX_CTL_REQ_TX_STATUS; if (no_cck) flags |= IEEE80211_TX_CTL_NO_CCK_RATE; switch (sdata->vif.type) { case NL80211_IFTYPE_ADHOC: if (!sdata->vif.bss_conf.ibss_joined) need_offchan = true; /* fall through */ #ifdef CONFIG_MAC80211_MESH case NL80211_IFTYPE_MESH_POINT: if (ieee80211_vif_is_mesh(&sdata->vif) && !sdata->u.mesh.mesh_id_len) need_offchan = true; /* fall through */ #endif case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: case NL80211_IFTYPE_P2P_GO: if (sdata->vif.type != NL80211_IFTYPE_ADHOC && !ieee80211_vif_is_mesh(&sdata->vif) && !rcu_access_pointer(sdata->bss->beacon)) need_offchan = true; if (!ieee80211_is_action(mgmt->frame_control) || mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) break; rcu_read_lock(); sta = sta_info_get(sdata, mgmt->da); rcu_read_unlock(); if (!sta) return -ENOLINK; break; case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_P2P_CLIENT: if (!sdata->u.mgd.associated) need_offchan = true; break; default: return -EOPNOTSUPP; } mutex_lock(&local->mtx); /* Check if the operating channel is the requested channel */ if (!need_offchan) { need_offchan = chan != local->oper_channel; if (channel_type_valid && channel_type != local->_oper_channel_type) need_offchan = true; } if (need_offchan && !offchan) { ret = -EBUSY; goto out_unlock; } skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); if (!skb) { ret = -ENOMEM; goto out_unlock; } skb_reserve(skb, local->hw.extra_tx_headroom); memcpy(skb_put(skb, len), buf, len); IEEE80211_SKB_CB(skb)->flags = flags; skb->dev = sdata->dev; if (!need_offchan) { ieee80211_tx_skb(sdata, skb); ret = 0; goto out_unlock; } IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN; if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) IEEE80211_SKB_CB(skb)->hw_queue = local->hw.offchannel_tx_hw_queue; /* This will handle all kinds of coalescing and immediate TX */ ret = ieee80211_start_roc_work(local, sdata, chan, channel_type, wait, cookie, skb); if (ret) kfree_skb(skb); out_unlock: mutex_unlock(&local->mtx); return ret; } static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, struct wireless_dev *wdev, u64 cookie) { struct ieee80211_local *local = wiphy_priv(wiphy); return ieee80211_cancel_roc(local, cookie, true); } static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, struct wireless_dev *wdev, u16 frame_type, bool reg) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); switch (frame_type) { case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH: if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; if (reg) ifibss->auth_frame_registrations++; else ifibss->auth_frame_registrations--; } break; case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: if (reg) local->probe_req_reg++; else local->probe_req_reg--; ieee80211_queue_work(&local->hw, &local->reconfig_filter); break; default: break; } } static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) { struct ieee80211_local *local = wiphy_priv(wiphy); if (local->started) return -EOPNOTSUPP; return drv_set_antenna(local, tx_ant, rx_ant); } static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) { struct ieee80211_local *local = wiphy_priv(wiphy); return drv_get_antenna(local, tx_ant, rx_ant); } static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) { struct ieee80211_local *local = wiphy_priv(wiphy); return drv_set_ringparam(local, tx, rx); } static void ieee80211_get_ringparam(struct wiphy *wiphy, u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) { struct ieee80211_local *local = wiphy_priv(wiphy); drv_get_ringparam(local, tx, tx_max, rx, rx_max); } static int ieee80211_set_rekey_data(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_gtk_rekey_data *data) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (!local->ops->set_rekey_data) return -EOPNOTSUPP; drv_set_rekey_data(local, sdata, data); return 0; } static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) { u8 *pos = (void *)skb_put(skb, 7); *pos++ = WLAN_EID_EXT_CAPABILITY; *pos++ = 5; /* len */ *pos++ = 0x0; *pos++ = 0x0; *pos++ = 0x0; *pos++ = 0x0; *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; } static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) { struct ieee80211_local *local = sdata->local; u16 capab; capab = 0; if (local->oper_channel->band != IEEE80211_BAND_2GHZ) return capab; if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; return capab; } static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, u8 *peer, u8 *bssid) { struct ieee80211_tdls_lnkie *lnkid; lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); lnkid->ie_type = WLAN_EID_LINK_ID; lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; memcpy(lnkid->bssid, bssid, ETH_ALEN); memcpy(lnkid->init_sta, src_addr, ETH_ALEN); memcpy(lnkid->resp_sta, peer, ETH_ALEN); } static int ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, u8 *peer, u8 action_code, u8 dialog_token, u16 status_code, struct sk_buff *skb) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_tdls_data *tf; tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); memcpy(tf->da, peer, ETH_ALEN); memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); tf->ether_type = cpu_to_be16(ETH_P_TDLS); tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; switch (action_code) { case WLAN_TDLS_SETUP_REQUEST: tf->category = WLAN_CATEGORY_TDLS; tf->action_code = WLAN_TDLS_SETUP_REQUEST; skb_put(skb, sizeof(tf->u.setup_req)); tf->u.setup_req.dialog_token = dialog_token; tf->u.setup_req.capability = cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); ieee80211_add_srates_ie(sdata, skb, false); ieee80211_add_ext_srates_ie(sdata, skb, false); ieee80211_tdls_add_ext_capab(skb); break; case WLAN_TDLS_SETUP_RESPONSE: tf->category = WLAN_CATEGORY_TDLS; tf->action_code = WLAN_TDLS_SETUP_RESPONSE; skb_put(skb, sizeof(tf->u.setup_resp)); tf->u.setup_resp.status_code = cpu_to_le16(status_code); tf->u.setup_resp.dialog_token = dialog_token; tf->u.setup_resp.capability = cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); ieee80211_add_srates_ie(sdata, skb, false); ieee80211_add_ext_srates_ie(sdata, skb, false); ieee80211_tdls_add_ext_capab(skb); break; case WLAN_TDLS_SETUP_CONFIRM: tf->category = WLAN_CATEGORY_TDLS; tf->action_code = WLAN_TDLS_SETUP_CONFIRM; skb_put(skb, sizeof(tf->u.setup_cfm)); tf->u.setup_cfm.status_code = cpu_to_le16(status_code); tf->u.setup_cfm.dialog_token = dialog_token; break; case WLAN_TDLS_TEARDOWN: tf->category = WLAN_CATEGORY_TDLS; tf->action_code = WLAN_TDLS_TEARDOWN; skb_put(skb, sizeof(tf->u.teardown)); tf->u.teardown.reason_code = cpu_to_le16(status_code); break; case WLAN_TDLS_DISCOVERY_REQUEST: tf->category = WLAN_CATEGORY_TDLS; tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; skb_put(skb, sizeof(tf->u.discover_req)); tf->u.discover_req.dialog_token = dialog_token; break; default: return -EINVAL; } return 0; } static int ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, u8 *peer, u8 action_code, u8 dialog_token, u16 status_code, struct sk_buff *skb) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_mgmt *mgmt; mgmt = (void *)skb_put(skb, 24); memset(mgmt, 0, 24); memcpy(mgmt->da, peer, ETH_ALEN); memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION); switch (action_code) { case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; mgmt->u.action.u.tdls_discover_resp.action_code = WLAN_PUB_ACTION_TDLS_DISCOVER_RES; mgmt->u.action.u.tdls_discover_resp.dialog_token = dialog_token; mgmt->u.action.u.tdls_discover_resp.capability = cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); ieee80211_add_srates_ie(sdata, skb, false); ieee80211_add_ext_srates_ie(sdata, skb, false); ieee80211_tdls_add_ext_capab(skb); break; default: return -EINVAL; } return 0; } static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, u8 *peer, u8 action_code, u8 dialog_token, u16 status_code, const u8 *extra_ies, size_t extra_ies_len) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct ieee80211_tx_info *info; struct sk_buff *skb = NULL; bool send_direct; int ret; if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) return -ENOTSUPP; /* make sure we are in managed mode, and associated */ if (sdata->vif.type != NL80211_IFTYPE_STATION || !sdata->u.mgd.associated) return -EINVAL; tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n", action_code, peer); 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 */ extra_ies_len + sizeof(struct ieee80211_tdls_lnkie)); if (!skb) return -ENOMEM; info = IEEE80211_SKB_CB(skb); skb_reserve(skb, local->hw.extra_tx_headroom); switch (action_code) { case WLAN_TDLS_SETUP_REQUEST: case WLAN_TDLS_SETUP_RESPONSE: case WLAN_TDLS_SETUP_CONFIRM: case WLAN_TDLS_TEARDOWN: case WLAN_TDLS_DISCOVERY_REQUEST: ret = ieee80211_prep_tdls_encap_data(wiphy, 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, dialog_token, status_code, skb); send_direct = true; break; default: ret = -ENOTSUPP; break; } if (ret < 0) goto fail; if (extra_ies_len) memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); /* the TDLS link IE is always added last */ switch (action_code) { case WLAN_TDLS_SETUP_REQUEST: case WLAN_TDLS_SETUP_CONFIRM: case WLAN_TDLS_TEARDOWN: case WLAN_TDLS_DISCOVERY_REQUEST: /* we are the initiator */ ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, sdata->u.mgd.bssid); break; case WLAN_TDLS_SETUP_RESPONSE: case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: /* we are the responder */ ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, sdata->u.mgd.bssid); break; default: ret = -ENOTSUPP; goto fail; } if (send_direct) { ieee80211_tx_skb(sdata, skb); return 0; } /* * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise * we should default to AC_VI. */ switch (action_code) { case WLAN_TDLS_SETUP_REQUEST: case WLAN_TDLS_SETUP_RESPONSE: skb_set_queue_mapping(skb, IEEE80211_AC_BK); skb->priority = 2; break; default: skb_set_queue_mapping(skb, IEEE80211_AC_VI); skb->priority = 5; break; } /* disable bottom halves when entering the Tx path */ local_bh_disable(); ret = ieee80211_subif_start_xmit(skb, dev); local_bh_enable(); return ret; fail: dev_kfree_skb(skb); return ret; } static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, u8 *peer, enum nl80211_tdls_operation oper) { struct sta_info *sta; struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) return -ENOTSUPP; if (sdata->vif.type != NL80211_IFTYPE_STATION) return -EINVAL; tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer); switch (oper) { case NL80211_TDLS_ENABLE_LINK: rcu_read_lock(); sta = sta_info_get(sdata, peer); if (!sta) { rcu_read_unlock(); return -ENOLINK; } set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); rcu_read_unlock(); break; case NL80211_TDLS_DISABLE_LINK: return sta_info_destroy_addr(sdata, peer); case NL80211_TDLS_TEARDOWN: case NL80211_TDLS_SETUP: case NL80211_TDLS_DISCOVERY_REQ: /* We don't support in-driver setup/teardown/discovery */ return -ENOTSUPP; default: return -ENOTSUPP; } return 0; } static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, const u8 *peer, u64 *cookie) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct ieee80211_qos_hdr *nullfunc; struct sk_buff *skb; int size = sizeof(*nullfunc); __le16 fc; bool qos; struct ieee80211_tx_info *info; struct sta_info *sta; rcu_read_lock(); sta = sta_info_get(sdata, peer); if (sta) { qos = test_sta_flag(sta, WLAN_STA_WME); rcu_read_unlock(); } else { rcu_read_unlock(); return -ENOLINK; } if (qos) { fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC | IEEE80211_FCTL_FROMDS); } else { size -= 2; fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | IEEE80211_FCTL_FROMDS); } skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); if (!skb) return -ENOMEM; skb->dev = dev; skb_reserve(skb, local->hw.extra_tx_headroom); nullfunc = (void *) skb_put(skb, size); nullfunc->frame_control = fc; nullfunc->duration_id = 0; memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); nullfunc->seq_ctrl = 0; info = IEEE80211_SKB_CB(skb); info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | IEEE80211_TX_INTFL_NL80211_FRAME_TX; skb_set_queue_mapping(skb, IEEE80211_AC_VO); skb->priority = 7; if (qos) nullfunc->qos_ctrl = cpu_to_le16(7); local_bh_disable(); ieee80211_xmit(sdata, skb); local_bh_enable(); *cookie = (unsigned long) skb; return 0; } static void ieee80211_set_monitor_enabled(struct wiphy *wiphy, bool enabled) { struct ieee80211_local *local = wiphy_priv(wiphy); if (enabled) WARN_ON(ieee80211_add_virtual_monitor(local)); else ieee80211_del_virtual_monitor(local); } #ifdef CONFIG_PM static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) { drv_set_wakeup(wiphy_priv(wiphy), enabled); } #endif struct cfg80211_ops mac80211_config_ops = { .add_virtual_intf = ieee80211_add_iface, .del_virtual_intf = ieee80211_del_iface, .change_virtual_intf = ieee80211_change_iface, .add_key = ieee80211_add_key, .del_key = ieee80211_del_key, .get_key = ieee80211_get_key, .set_default_key = ieee80211_config_default_key, .set_default_mgmt_key = ieee80211_config_default_mgmt_key, .start_ap = ieee80211_start_ap, .change_beacon = ieee80211_change_beacon, .stop_ap = ieee80211_stop_ap, .add_station = ieee80211_add_station, .del_station = ieee80211_del_station, .change_station = ieee80211_change_station, .get_station = ieee80211_get_station, .dump_station = ieee80211_dump_station, .dump_survey = ieee80211_dump_survey, #ifdef CONFIG_MAC80211_MESH .add_mpath = ieee80211_add_mpath, .del_mpath = ieee80211_del_mpath, .change_mpath = ieee80211_change_mpath, .get_mpath = ieee80211_get_mpath, .dump_mpath = ieee80211_dump_mpath, .update_mesh_config = ieee80211_update_mesh_config, .get_mesh_config = ieee80211_get_mesh_config, .join_mesh = ieee80211_join_mesh, .leave_mesh = ieee80211_leave_mesh, #endif .change_bss = ieee80211_change_bss, .set_txq_params = ieee80211_set_txq_params, .set_monitor_channel = ieee80211_set_monitor_channel, .suspend = ieee80211_suspend, .resume = ieee80211_resume, .scan = ieee80211_scan, .sched_scan_start = ieee80211_sched_scan_start, .sched_scan_stop = ieee80211_sched_scan_stop, .auth = ieee80211_auth, .assoc = ieee80211_assoc, .deauth = ieee80211_deauth, .disassoc = ieee80211_disassoc, .join_ibss = ieee80211_join_ibss, .leave_ibss = ieee80211_leave_ibss, .set_wiphy_params = ieee80211_set_wiphy_params, .set_tx_power = ieee80211_set_tx_power, .get_tx_power = ieee80211_get_tx_power, .set_wds_peer = ieee80211_set_wds_peer, .rfkill_poll = ieee80211_rfkill_poll, CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) .set_power_mgmt = ieee80211_set_power_mgmt, .set_bitrate_mask = ieee80211_set_bitrate_mask, .remain_on_channel = ieee80211_remain_on_channel, .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, .mgmt_tx = ieee80211_mgmt_tx, .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, .mgmt_frame_register = ieee80211_mgmt_frame_register, .set_antenna = ieee80211_set_antenna, .get_antenna = ieee80211_get_antenna, .set_ringparam = ieee80211_set_ringparam, .get_ringparam = ieee80211_get_ringparam, .set_rekey_data = ieee80211_set_rekey_data, .tdls_oper = ieee80211_tdls_oper, .tdls_mgmt = ieee80211_tdls_mgmt, .probe_client = ieee80211_probe_client, .set_noack_map = ieee80211_set_noack_map, .set_monitor_enabled = ieee80211_set_monitor_enabled, #ifdef CONFIG_PM .set_wakeup = ieee80211_set_wakeup, #endif .get_et_sset_count = ieee80211_get_et_sset_count, .get_et_stats = ieee80211_get_et_stats, .get_et_strings = ieee80211_get_et_strings, };