diff options
Diffstat (limited to 'net/mac80211')
34 files changed, 2385 insertions, 2278 deletions
diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile index d540c3b160f3..1be7a454aa77 100644 --- a/net/mac80211/Makefile +++ b/net/mac80211/Makefile @@ -9,7 +9,7 @@ mac80211-y := \ scan.o offchannel.o \ ht.o agg-tx.o agg-rx.o \ ibss.o \ - mlme.o work.o \ + work.o \ iface.o \ rate.o \ michael.o \ @@ -25,7 +25,7 @@ mac80211-y := \ wme.o \ event.o \ chan.o \ - driver-trace.o + driver-trace.o mlme.o mac80211-$(CONFIG_MAC80211_LEDS) += led.o mac80211-$(CONFIG_MAC80211_DEBUGFS) += \ diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 296620d6ca0c..677d65929780 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -336,6 +336,20 @@ static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, in 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; @@ -378,14 +392,7 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); } - sinfo->txrate.flags = 0; - if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS) - sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; - if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH) - sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; - if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI) - sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; - rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx); + 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) @@ -489,27 +496,13 @@ static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, return ret; } -static void ieee80211_config_ap_ssid(struct ieee80211_sub_if_data *sdata, - struct beacon_parameters *params) -{ - struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; - - bss_conf->ssid_len = params->ssid_len; - - if (params->ssid_len) - memcpy(bss_conf->ssid, params->ssid, params->ssid_len); - - bss_conf->hidden_ssid = - (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); -} - static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, - u8 *resp, size_t resp_len) + const u8 *resp, size_t resp_len) { struct sk_buff *new, *old; if (!resp || !resp_len) - return -EINVAL; + return 1; old = rtnl_dereference(sdata->u.ap.probe_resp); @@ -520,50 +513,28 @@ static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, memcpy(skb_put(new, resp_len), resp, resp_len); rcu_assign_pointer(sdata->u.ap.probe_resp, new); - synchronize_rcu(); - - if (old) + if (old) { + /* TODO: use call_rcu() */ + synchronize_rcu(); dev_kfree_skb(old); + } return 0; } -/* - * This handles both adding a beacon and setting new beacon info - */ -static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, - struct beacon_parameters *params) +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; - int err = -EINVAL; - u32 changed = 0; + int size, err; + u32 changed = BSS_CHANGED_BEACON; old = rtnl_dereference(sdata->u.ap.beacon); - /* head must not be zero-length */ - if (params->head && !params->head_len) - return -EINVAL; - - /* - * This is a kludge. beacon interval should really be part - * of the beacon information. - */ - if (params->interval && - (sdata->vif.bss_conf.beacon_int != params->interval)) { - sdata->vif.bss_conf.beacon_int = params->interval; - ieee80211_bss_info_change_notify(sdata, - BSS_CHANGED_BEACON_INT); - } - /* Need to have a beacon head if we don't have one yet */ if (!params->head && !old) - return err; - - /* sorry, no way to start beaconing without dtim period */ - if (!params->dtim_period && !old) - return err; + return -EINVAL; /* new or old head? */ if (params->head) @@ -586,12 +557,6 @@ static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, /* start filling the new info now */ - /* new or old dtim period? */ - if (params->dtim_period) - new->dtim_period = params->dtim_period; - else - new->dtim_period = old->dtim_period; - /* * pointers go into the block we allocated, * memory is | beacon_data | head | tail | @@ -614,46 +579,37 @@ static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, if (old) memcpy(new->tail, old->tail, new_tail_len); - sdata->vif.bss_conf.dtim_period = new->dtim_period; - - rcu_assign_pointer(sdata->u.ap.beacon, new); - - synchronize_rcu(); - - kfree(old); - err = ieee80211_set_probe_resp(sdata, params->probe_resp, params->probe_resp_len); - if (!err) + if (err < 0) + return err; + if (err == 0) changed |= BSS_CHANGED_AP_PROBE_RESP; - ieee80211_config_ap_ssid(sdata, params); - changed |= BSS_CHANGED_BEACON_ENABLED | - BSS_CHANGED_BEACON | - BSS_CHANGED_SSID; + rcu_assign_pointer(sdata->u.ap.beacon, new); - ieee80211_bss_info_change_notify(sdata, changed); - return 0; + if (old) + kfree_rcu(old, rcu_head); + + return changed; } -static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, - struct beacon_parameters *params) +static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_ap_settings *params) { - struct ieee80211_sub_if_data *sdata; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct beacon_data *old; struct ieee80211_sub_if_data *vlan; - int ret; - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); + 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; - ret = ieee80211_config_beacon(sdata, params); - if (ret) - return ret; - /* * Apply control port protocol, this allows us to * not encrypt dynamic WEP control frames. @@ -667,14 +623,32 @@ static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, 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); + return 0; } -static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, - struct beacon_parameters *params) +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); @@ -682,10 +656,14 @@ static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, if (!old) return -ENOENT; - return ieee80211_config_beacon(sdata, params); + err = ieee80211_assign_beacon(sdata, params); + if (err < 0) + return err; + ieee80211_bss_info_change_notify(sdata, err); + return 0; } -static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) +static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) { struct ieee80211_sub_if_data *sdata; struct beacon_data *old; @@ -697,10 +675,11 @@ static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) return -ENOENT; RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); - synchronize_rcu(); - kfree(old); + + kfree_rcu(old, rcu_head); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); + return 0; } @@ -776,12 +755,10 @@ static int sta_apply_parameters(struct ieee80211_local *local, if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && !test_sta_flag(sta, WLAN_STA_AUTH)) { - ret = sta_info_move_state_checked(sta, - IEEE80211_STA_AUTH); + ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); if (ret) return ret; - ret = sta_info_move_state_checked(sta, - IEEE80211_STA_ASSOC); + ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); if (ret) return ret; } @@ -789,11 +766,9 @@ static int sta_apply_parameters(struct ieee80211_local *local, if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) - ret = sta_info_move_state_checked(sta, - IEEE80211_STA_AUTHORIZED); + ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) - ret = sta_info_move_state_checked(sta, - IEEE80211_STA_ASSOC); + ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); if (ret) return ret; } @@ -805,12 +780,10 @@ static int sta_apply_parameters(struct ieee80211_local *local, if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && test_sta_flag(sta, WLAN_STA_AUTH)) { - ret = sta_info_move_state_checked(sta, - IEEE80211_STA_AUTH); + ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); if (ret) return ret; - ret = sta_info_move_state_checked(sta, - IEEE80211_STA_NONE); + ret = sta_info_move_state(sta, IEEE80211_STA_NONE); if (ret) return ret; } @@ -944,8 +917,8 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, if (!sta) return -ENOMEM; - sta_info_move_state(sta, IEEE80211_STA_AUTH); - sta_info_move_state(sta, IEEE80211_STA_ASSOC); + 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) { @@ -1001,6 +974,7 @@ static int ieee80211_change_station(struct wiphy *wiphy, struct ieee80211_local *local = wiphy_priv(wiphy); struct sta_info *sta; struct ieee80211_sub_if_data *vlansdata; + int err; mutex_lock(&local->sta_mtx); @@ -1040,7 +1014,11 @@ static int ieee80211_change_station(struct wiphy *wiphy, ieee80211_send_layer2_update(sta); } - sta_apply_parameters(local, sta, params); + 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); @@ -1341,6 +1319,16 @@ static int ieee80211_update_mesh_config(struct wiphy *wiphy, 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; + } return 0; } @@ -1622,19 +1610,15 @@ static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, } static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, - struct cfg80211_deauth_request *req, - void *cookie) + struct cfg80211_deauth_request *req) { - return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), - req, cookie); + 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, - void *cookie) + struct cfg80211_disassoc_request *req) { - return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), - req, cookie); + return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, @@ -1868,7 +1852,6 @@ static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, s32 rssi_thold, u32 rssi_hyst) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct ieee80211_vif *vif = &sdata->vif; struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; @@ -1879,14 +1862,9 @@ static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, bss_conf->cqm_rssi_thold = rssi_thold; bss_conf->cqm_rssi_hyst = rssi_hyst; - if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) { - if (sdata->vif.type != NL80211_IFTYPE_STATION) - return -EOPNOTSUPP; - return 0; - } - /* tell the driver upon association, unless already associated */ - if (sdata->u.mgd.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; @@ -1907,8 +1885,11 @@ static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, return ret; } - for (i = 0; i < IEEE80211_NUM_BANDS; i++) + 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; } @@ -2030,7 +2011,7 @@ ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb) if (wk->offchan_tx.wait && !wk->offchan_tx.status) cfg80211_mgmt_tx_status(wk->sdata->dev, (unsigned long) wk->offchan_tx.frame, - wk->ie, wk->ie_len, false, GFP_KERNEL); + wk->data, wk->data_len, false, GFP_KERNEL); return WORK_DONE_DESTROY; } @@ -2181,8 +2162,8 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev, wk->done = ieee80211_offchan_tx_done; wk->offchan_tx.frame = skb; wk->offchan_tx.wait = wait; - wk->ie_len = len; - memcpy(wk->ie, buf, len); + wk->data_len = len; + memcpy(wk->data, buf, len); ieee80211_add_work(wk); return 0; @@ -2701,9 +2682,9 @@ struct cfg80211_ops mac80211_config_ops = { .get_key = ieee80211_get_key, .set_default_key = ieee80211_config_default_key, .set_default_mgmt_key = ieee80211_config_default_mgmt_key, - .add_beacon = ieee80211_add_beacon, - .set_beacon = ieee80211_set_beacon, - .del_beacon = ieee80211_del_beacon, + .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, diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 889c3e93e0f4..e00ce8c3e28e 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -3,6 +3,7 @@ */ #include <linux/nl80211.h> +#include <net/cfg80211.h> #include "ieee80211_i.h" static enum ieee80211_chan_mode @@ -20,23 +21,29 @@ __ieee80211_get_channel_mode(struct ieee80211_local *local, if (!ieee80211_sdata_running(sdata)) continue; - if (sdata->vif.type == NL80211_IFTYPE_MONITOR) + switch (sdata->vif.type) { + case NL80211_IFTYPE_MONITOR: continue; - - if (sdata->vif.type == NL80211_IFTYPE_STATION && - !sdata->u.mgd.associated) - continue; - - if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { + case NL80211_IFTYPE_STATION: + if (!sdata->u.mgd.associated) + continue; + break; + case NL80211_IFTYPE_ADHOC: if (!sdata->u.ibss.ssid_len) continue; if (!sdata->u.ibss.fixed_channel) return CHAN_MODE_HOPPING; - } - - if (sdata->vif.type == NL80211_IFTYPE_AP && - !sdata->u.ap.beacon) + break; + case NL80211_IFTYPE_AP_VLAN: + /* will also have _AP interface */ continue; + case NL80211_IFTYPE_AP: + if (!sdata->u.ap.beacon) + continue; + break; + default: + break; + } return CHAN_MODE_FIXED; } @@ -128,3 +135,29 @@ bool ieee80211_set_channel_type(struct ieee80211_local *local, return result; } + +/* + * ieee80211_get_tx_channel_type returns the channel type we should + * use for packet transmission, given the channel capability and + * whatever regulatory flags we have been given. + */ +enum nl80211_channel_type ieee80211_get_tx_channel_type( + struct ieee80211_local *local, + enum nl80211_channel_type channel_type) +{ + switch (channel_type) { + case NL80211_CHAN_HT40PLUS: + if (local->hw.conf.channel->flags & + IEEE80211_CHAN_NO_HT40PLUS) + return NL80211_CHAN_HT20; + break; + case NL80211_CHAN_HT40MINUS: + if (local->hw.conf.channel->flags & + IEEE80211_CHAN_NO_HT40MINUS) + return NL80211_CHAN_HT20; + break; + default: + break; + } + return channel_type; +} diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index 90baea53e7c5..cc5b7a6e7e0b 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c @@ -97,85 +97,6 @@ static const struct file_operations reset_ops = { .llseek = noop_llseek, }; -static ssize_t uapsd_queues_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct ieee80211_local *local = file->private_data; - return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n", - local->uapsd_queues); -} - -static ssize_t uapsd_queues_write(struct file *file, - const char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct ieee80211_local *local = file->private_data; - u8 val; - int ret; - - ret = kstrtou8_from_user(user_buf, count, 0, &val); - if (ret) - return ret; - - if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) - return -ERANGE; - - local->uapsd_queues = val; - - return count; -} - -static const struct file_operations uapsd_queues_ops = { - .read = uapsd_queues_read, - .write = uapsd_queues_write, - .open = mac80211_open_file_generic, - .llseek = default_llseek, -}; - -static ssize_t uapsd_max_sp_len_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct ieee80211_local *local = file->private_data; - - return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n", - local->uapsd_max_sp_len); -} - -static ssize_t uapsd_max_sp_len_write(struct file *file, - const char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct ieee80211_local *local = file->private_data; - unsigned long val; - char buf[10]; - size_t len; - int ret; - - len = min(count, sizeof(buf) - 1); - if (copy_from_user(buf, user_buf, len)) - return -EFAULT; - buf[len] = '\0'; - - ret = kstrtoul(buf, 0, &val); - - if (ret) - return -EINVAL; - - if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) - return -ERANGE; - - local->uapsd_max_sp_len = val; - - return count; -} - -static const struct file_operations uapsd_max_sp_len_ops = { - .read = uapsd_max_sp_len_read, - .write = uapsd_max_sp_len_write, - .open = mac80211_open_file_generic, - .llseek = default_llseek, -}; - static ssize_t channel_type_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { @@ -247,8 +168,6 @@ static ssize_t hwflags_read(struct file *file, char __user *user_buf, sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_PS\n"); if (local->hw.flags & IEEE80211_HW_MFP_CAPABLE) sf += snprintf(buf + sf, mxln - sf, "MFP_CAPABLE\n"); - if (local->hw.flags & IEEE80211_HW_BEACON_FILTER) - sf += snprintf(buf + sf, mxln - sf, "BEACON_FILTER\n"); if (local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_STATIC_SMPS\n"); if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) @@ -259,14 +178,14 @@ static ssize_t hwflags_read(struct file *file, char __user *user_buf, sf += snprintf(buf + sf, mxln - sf, "REPORTS_TX_ACK_STATUS\n"); if (local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) sf += snprintf(buf + sf, mxln - sf, "CONNECTION_MONITOR\n"); - if (local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI) - sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_CQM_RSSI\n"); if (local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PER_STA_GTK\n"); if (local->hw.flags & IEEE80211_HW_AP_LINK_PS) sf += snprintf(buf + sf, mxln - sf, "AP_LINK_PS\n"); if (local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW) sf += snprintf(buf + sf, mxln - sf, "TX_AMPDU_SETUP_IN_HW\n"); + if (local->hw.flags & IEEE80211_HW_SCAN_WHILE_IDLE) + sf += snprintf(buf + sf, mxln - sf, "SCAN_WHILE_IDLE\n"); rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); kfree(buf); @@ -364,8 +283,6 @@ void debugfs_hw_add(struct ieee80211_local *local) DEBUGFS_ADD(wep_iv); DEBUGFS_ADD(queues); DEBUGFS_ADD_MODE(reset, 0200); - DEBUGFS_ADD(uapsd_queues); - DEBUGFS_ADD(uapsd_max_sp_len); DEBUGFS_ADD(channel_type); DEBUGFS_ADD(hwflags); DEBUGFS_ADD(user_power); diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index 176c08ffb13c..a32eeda04aa3 100644 --- a/net/mac80211/debugfs_netdev.c +++ b/net/mac80211/debugfs_netdev.c @@ -49,16 +49,15 @@ static ssize_t ieee80211_if_write( size_t count, loff_t *ppos, ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int)) { - u8 *buf; + char buf[64]; ssize_t ret; - buf = kmalloc(count, GFP_KERNEL); - if (!buf) - return -ENOMEM; + if (count >= sizeof(buf)) + return -E2BIG; - ret = -EFAULT; if (copy_from_user(buf, userbuf, count)) - goto freebuf; + return -EFAULT; + buf[count] = '\0'; ret = -ENODEV; rtnl_lock(); @@ -66,8 +65,6 @@ static ssize_t ieee80211_if_write( ret = (*write)(sdata, buf, count); rtnl_unlock(); -freebuf: - kfree(buf); return ret; } @@ -87,6 +84,21 @@ static ssize_t ieee80211_if_fmt_##name( \ #define IEEE80211_IF_FMT_SIZE(name, field) \ IEEE80211_IF_FMT(name, field, "%zd\n") +#define IEEE80211_IF_FMT_HEXARRAY(name, field) \ +static ssize_t ieee80211_if_fmt_##name( \ + const struct ieee80211_sub_if_data *sdata, \ + char *buf, int buflen) \ +{ \ + char *p = buf; \ + int i; \ + for (i = 0; i < sizeof(sdata->field); i++) { \ + p += scnprintf(p, buflen + buf - p, "%.2x ", \ + sdata->field[i]); \ + } \ + p += scnprintf(p, buflen + buf - p, "\n"); \ + return p - buf; \ +} + #define IEEE80211_IF_FMT_ATOMIC(name, field) \ static ssize_t ieee80211_if_fmt_##name( \ const struct ieee80211_sub_if_data *sdata, \ @@ -148,6 +160,11 @@ IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[IEEE80211_BAND_2GHZ], HEX); IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[IEEE80211_BAND_5GHZ], HEX); +IEEE80211_IF_FILE(rc_rateidx_mcs_mask_2ghz, + rc_rateidx_mcs_mask[IEEE80211_BAND_2GHZ], HEXARRAY); +IEEE80211_IF_FILE(rc_rateidx_mcs_mask_5ghz, + rc_rateidx_mcs_mask[IEEE80211_BAND_5GHZ], HEXARRAY); + IEEE80211_IF_FILE(flags, flags, HEX); IEEE80211_IF_FILE(state, state, LHEX); IEEE80211_IF_FILE(channel_type, vif.bss_conf.channel_type, DEC); @@ -320,6 +337,62 @@ static ssize_t ieee80211_if_parse_tkip_mic_test( __IEEE80211_IF_FILE_W(tkip_mic_test); +static ssize_t ieee80211_if_fmt_uapsd_queues( + const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) +{ + const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + + return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_queues); +} + +static ssize_t ieee80211_if_parse_uapsd_queues( + struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) +{ + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + u8 val; + int ret; + + ret = kstrtou8(buf, 0, &val); + if (ret) + return ret; + + if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) + return -ERANGE; + + ifmgd->uapsd_queues = val; + + return buflen; +} +__IEEE80211_IF_FILE_W(uapsd_queues); + +static ssize_t ieee80211_if_fmt_uapsd_max_sp_len( + const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) +{ + const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + + return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_max_sp_len); +} + +static ssize_t ieee80211_if_parse_uapsd_max_sp_len( + struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) +{ + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 0, &val); + if (ret) + return -EINVAL; + + if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) + return -ERANGE; + + ifmgd->uapsd_max_sp_len = val; + + return buflen; +} +__IEEE80211_IF_FILE_W(uapsd_max_sp_len); + /* AP attributes */ IEEE80211_IF_FILE(num_sta_authorized, u.ap.num_sta_authorized, ATOMIC); IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC); @@ -422,6 +495,8 @@ IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol, u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC); IEEE80211_IF_FILE(dot11MeshHWMPRannInterval, u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC); +IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC); +IEEE80211_IF_FILE(rssi_threshold, u.mesh.mshcfg.rssi_threshold, DEC); #endif @@ -441,6 +516,8 @@ static void add_sta_files(struct ieee80211_sub_if_data *sdata) DEBUGFS_ADD(channel_type); DEBUGFS_ADD(rc_rateidx_mask_2ghz); DEBUGFS_ADD(rc_rateidx_mask_5ghz); + DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz); + DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz); DEBUGFS_ADD(bssid); DEBUGFS_ADD(aid); @@ -448,6 +525,8 @@ static void add_sta_files(struct ieee80211_sub_if_data *sdata) DEBUGFS_ADD(ave_beacon); DEBUGFS_ADD_MODE(smps, 0600); DEBUGFS_ADD_MODE(tkip_mic_test, 0200); + DEBUGFS_ADD_MODE(uapsd_queues, 0600); + DEBUGFS_ADD_MODE(uapsd_max_sp_len, 0600); } static void add_ap_files(struct ieee80211_sub_if_data *sdata) @@ -458,6 +537,8 @@ static void add_ap_files(struct ieee80211_sub_if_data *sdata) DEBUGFS_ADD(channel_type); DEBUGFS_ADD(rc_rateidx_mask_2ghz); DEBUGFS_ADD(rc_rateidx_mask_5ghz); + DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz); + DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz); DEBUGFS_ADD(num_sta_authorized); DEBUGFS_ADD(num_sta_ps); @@ -468,6 +549,12 @@ static void add_ap_files(struct ieee80211_sub_if_data *sdata) static void add_ibss_files(struct ieee80211_sub_if_data *sdata) { + DEBUGFS_ADD(channel_type); + DEBUGFS_ADD(rc_rateidx_mask_2ghz); + DEBUGFS_ADD(rc_rateidx_mask_5ghz); + DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz); + DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz); + DEBUGFS_ADD_MODE(tsf, 0600); } @@ -479,6 +566,8 @@ static void add_wds_files(struct ieee80211_sub_if_data *sdata) DEBUGFS_ADD(channel_type); DEBUGFS_ADD(rc_rateidx_mask_2ghz); DEBUGFS_ADD(rc_rateidx_mask_5ghz); + DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz); + DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz); DEBUGFS_ADD(peer); } @@ -491,6 +580,8 @@ static void add_vlan_files(struct ieee80211_sub_if_data *sdata) DEBUGFS_ADD(channel_type); DEBUGFS_ADD(rc_rateidx_mask_2ghz); DEBUGFS_ADD(rc_rateidx_mask_5ghz); + DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz); + DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz); } static void add_monitor_files(struct ieee80211_sub_if_data *sdata) @@ -502,11 +593,15 @@ static void add_monitor_files(struct ieee80211_sub_if_data *sdata) #ifdef CONFIG_MAC80211_MESH +static void add_mesh_files(struct ieee80211_sub_if_data *sdata) +{ + DEBUGFS_ADD_MODE(tsf, 0600); +} + static void add_mesh_stats(struct ieee80211_sub_if_data *sdata) { struct dentry *dir = debugfs_create_dir("mesh_stats", sdata->debugfs.dir); - #define MESHSTATS_ADD(name)\ debugfs_create_file(#name, 0400, dir, sdata, &name##_ops); @@ -546,6 +641,7 @@ static void add_mesh_config(struct ieee80211_sub_if_data *sdata) MESHPARAMS_ADD(dot11MeshHWMPRootMode); MESHPARAMS_ADD(dot11MeshHWMPRannInterval); MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol); + MESHPARAMS_ADD(rssi_threshold); #undef MESHPARAMS_ADD } #endif @@ -558,6 +654,7 @@ static void add_files(struct ieee80211_sub_if_data *sdata) switch (sdata->vif.type) { case NL80211_IFTYPE_MESH_POINT: #ifdef CONFIG_MAC80211_MESH + add_mesh_files(sdata); add_mesh_stats(sdata); add_mesh_config(sdata); #endif diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c index 2406b3e7393f..6d45804d09bc 100644 --- a/net/mac80211/debugfs_sta.c +++ b/net/mac80211/debugfs_sta.c @@ -63,14 +63,15 @@ 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", TEST(AUTH), TEST(ASSOC), TEST(PS_STA), TEST(PS_DRIVER), TEST(AUTHORIZED), TEST(SHORT_PREAMBLE), TEST(WME), 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(TDLS_PEER_AUTH), TEST(4ADDR_EVENT), + TEST(INSERTED), TEST(RATE_CONTROL)); #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 e8960ae39861..af4691fed645 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -168,41 +168,6 @@ static inline void drv_bss_info_changed(struct ieee80211_local *local, trace_drv_return_void(local); } -static inline int drv_tx_sync(struct ieee80211_local *local, - struct ieee80211_sub_if_data *sdata, - const u8 *bssid, - enum ieee80211_tx_sync_type type) -{ - int ret = 0; - - might_sleep(); - - check_sdata_in_driver(sdata); - - trace_drv_tx_sync(local, sdata, bssid, type); - if (local->ops->tx_sync) - ret = local->ops->tx_sync(&local->hw, &sdata->vif, - bssid, type); - trace_drv_return_int(local, ret); - return ret; -} - -static inline void drv_finish_tx_sync(struct ieee80211_local *local, - struct ieee80211_sub_if_data *sdata, - const u8 *bssid, - enum ieee80211_tx_sync_type type) -{ - might_sleep(); - - check_sdata_in_driver(sdata); - - trace_drv_finish_tx_sync(local, sdata, bssid, type); - if (local->ops->finish_tx_sync) - local->ops->finish_tx_sync(&local->hw, &sdata->vif, - bssid, type); - trace_drv_return_void(local); -} - static inline u64 drv_prepare_multicast(struct ieee80211_local *local, struct netdev_hw_addr_list *mc_list) { @@ -253,6 +218,7 @@ static inline int drv_set_key(struct ieee80211_local *local, might_sleep(); + sdata = get_bss_sdata(sdata); check_sdata_in_driver(sdata); trace_drv_set_key(local, cmd, sdata, sta, key); @@ -272,6 +238,7 @@ static inline void drv_update_tkip_key(struct ieee80211_local *local, if (sta) ista = &sta->sta; + sdata = get_bss_sdata(sdata); check_sdata_in_driver(sdata); trace_drv_update_tkip_key(local, sdata, conf, ista, iv32); @@ -476,6 +443,37 @@ static inline void drv_sta_remove(struct ieee80211_local *local, trace_drv_return_void(local); } +static inline __must_check +int drv_sta_state(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + struct sta_info *sta, + enum ieee80211_sta_state old_state, + enum ieee80211_sta_state new_state) +{ + int ret = 0; + + might_sleep(); + + sdata = get_bss_sdata(sdata); + check_sdata_in_driver(sdata); + + trace_drv_sta_state(local, sdata, &sta->sta, old_state, new_state); + if (local->ops->sta_state) { + ret = local->ops->sta_state(&local->hw, &sdata->vif, &sta->sta, + old_state, new_state); + } else if (old_state == IEEE80211_STA_AUTH && + new_state == IEEE80211_STA_ASSOC) { + ret = drv_sta_add(local, sdata, &sta->sta); + if (ret == 0) + sta->uploaded = true; + } else if (old_state == IEEE80211_STA_ASSOC && + new_state == IEEE80211_STA_AUTH) { + drv_sta_remove(local, sdata, &sta->sta); + } + trace_drv_return_int(local, ret); + return ret; +} + static inline int drv_conf_tx(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata, u16 queue, const struct ieee80211_tx_queue_params *params) diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h index 6e9df8fd8fb8..21d6f5290a1c 100644 --- a/net/mac80211/driver-trace.h +++ b/net/mac80211/driver-trace.h @@ -296,7 +296,7 @@ TRACE_EVENT(drv_bss_info_changed, __entry->dtimper = info->dtim_period; __entry->bcnint = info->beacon_int; __entry->assoc_cap = info->assoc_capability; - __entry->timestamp = info->timestamp; + __entry->timestamp = info->last_tsf; __entry->basic_rates = info->basic_rates; __entry->enable_beacon = info->enable_beacon; __entry->ht_operation_mode = info->ht_operation_mode; @@ -308,49 +308,6 @@ TRACE_EVENT(drv_bss_info_changed, ) ); -DECLARE_EVENT_CLASS(tx_sync_evt, - TP_PROTO(struct ieee80211_local *local, - struct ieee80211_sub_if_data *sdata, - const u8 *bssid, - enum ieee80211_tx_sync_type type), - TP_ARGS(local, sdata, bssid, type), - - TP_STRUCT__entry( - LOCAL_ENTRY - VIF_ENTRY - __array(char, bssid, ETH_ALEN) - __field(u32, sync_type) - ), - - TP_fast_assign( - LOCAL_ASSIGN; - VIF_ASSIGN; - memcpy(__entry->bssid, bssid, ETH_ALEN); - __entry->sync_type = type; - ), - - TP_printk( - LOCAL_PR_FMT VIF_PR_FMT " bssid:%pM type:%d", - LOCAL_PR_ARG, VIF_PR_ARG, __entry->bssid, __entry->sync_type - ) -); - -DEFINE_EVENT(tx_sync_evt, drv_tx_sync, - TP_PROTO(struct ieee80211_local *local, - struct ieee80211_sub_if_data *sdata, - const u8 *bssid, - enum ieee80211_tx_sync_type type), - TP_ARGS(local, sdata, bssid, type) -); - -DEFINE_EVENT(tx_sync_evt, drv_finish_tx_sync, - TP_PROTO(struct ieee80211_local *local, - struct ieee80211_sub_if_data *sdata, - const u8 *bssid, - enum ieee80211_tx_sync_type type), - TP_ARGS(local, sdata, bssid, type) -); - TRACE_EVENT(drv_prepare_multicast, TP_PROTO(struct ieee80211_local *local, int mc_count), @@ -635,6 +592,38 @@ TRACE_EVENT(drv_sta_notify, ) ); +TRACE_EVENT(drv_sta_state, + TP_PROTO(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + struct ieee80211_sta *sta, + enum ieee80211_sta_state old_state, + enum ieee80211_sta_state new_state), + + TP_ARGS(local, sdata, sta, old_state, new_state), + + TP_STRUCT__entry( + LOCAL_ENTRY + VIF_ENTRY + STA_ENTRY + __field(u32, old_state) + __field(u32, new_state) + ), + + TP_fast_assign( + LOCAL_ASSIGN; + VIF_ASSIGN; + STA_ASSIGN; + __entry->old_state = old_state; + __entry->new_state = new_state; + ), + + TP_printk( + LOCAL_PR_FMT VIF_PR_FMT STA_PR_FMT " state: %d->%d", + LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG, + __entry->old_state, __entry->new_state + ) +); + TRACE_EVENT(drv_sta_add, TP_PROTO(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata, diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index a4643969a13b..33fd8d9f714e 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -20,7 +20,6 @@ #include <linux/etherdevice.h> #include <linux/rtnetlink.h> #include <net/mac80211.h> -#include <asm/unaligned.h> #include "ieee80211_i.h" #include "driver-ops.h" @@ -36,31 +35,6 @@ #define IEEE80211_IBSS_MAX_STA_ENTRIES 128 -static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata, - struct ieee80211_mgmt *mgmt, - size_t len) -{ - u16 auth_alg, auth_transaction; - - lockdep_assert_held(&sdata->u.ibss.mtx); - - if (len < 24 + 6) - return; - - auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); - auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); - - /* - * IEEE 802.11 standard does not require authentication in IBSS - * networks and most implementations do not seem to use it. - * However, try to reply to authentication attempts if someone - * has actually implemented this. - */ - if (auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) - ieee80211_send_auth(sdata, 2, WLAN_AUTH_OPEN, NULL, 0, - sdata->u.ibss.bssid, NULL, 0, 0); -} - static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, const u8 *bssid, const int beacon_int, struct ieee80211_channel *chan, @@ -92,7 +66,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, skb_reset_tail_pointer(skb); skb_reserve(skb, sdata->local->hw.extra_tx_headroom); - if (memcmp(ifibss->bssid, bssid, ETH_ALEN)) + if (compare_ether_addr(ifibss->bssid, bssid)) sta_info_flush(sdata->local, sdata); /* if merging, indicate to driver that we leave the old IBSS */ @@ -276,7 +250,8 @@ static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, cbss->tsf); } -static struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta) +static struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta, + bool auth) __acquires(RCU) { struct ieee80211_sub_if_data *sdata = sta->sdata; @@ -290,22 +265,34 @@ static struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta) addr, sdata->name); #endif - sta_info_move_state(sta, IEEE80211_STA_AUTH); - sta_info_move_state(sta, IEEE80211_STA_ASSOC); - sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); + sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); + sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); + /* authorize the station only if the network is not RSN protected. If + * not wait for the userspace to authorize it */ + if (!sta->sdata->u.ibss.control_port) + sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); rate_control_rate_init(sta); /* If it fails, maybe we raced another insertion? */ if (sta_info_insert_rcu(sta)) return sta_info_get(sdata, addr); + if (auth) { +#ifdef CONFIG_MAC80211_IBSS_DEBUG + printk(KERN_DEBUG "TX Auth SA=%pM DA=%pM BSSID=%pM" + "(auth_transaction=1)\n", sdata->vif.addr, + sdata->u.ibss.bssid, addr); +#endif + ieee80211_send_auth(sdata, 1, WLAN_AUTH_OPEN, NULL, 0, + addr, sdata->u.ibss.bssid, NULL, 0, 0); + } return sta; } static struct sta_info * ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, const u8 *bssid, const u8 *addr, - u32 supp_rates) + u32 supp_rates, bool auth) __acquires(RCU) { struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; @@ -347,7 +334,42 @@ ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, sta->sta.supp_rates[band] = supp_rates | ieee80211_mandatory_rates(local, band); - return ieee80211_ibss_finish_sta(sta); + return ieee80211_ibss_finish_sta(sta, auth); +} + +static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata, + struct ieee80211_mgmt *mgmt, + size_t len) +{ + u16 auth_alg, auth_transaction; + + lockdep_assert_held(&sdata->u.ibss.mtx); + + if (len < 24 + 6) + return; + + auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); + auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); + + if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) + return; +#ifdef CONFIG_MAC80211_IBSS_DEBUG + printk(KERN_DEBUG "%s: RX Auth SA=%pM DA=%pM BSSID=%pM." + "(auth_transaction=%d)\n", + sdata->name, mgmt->sa, mgmt->da, mgmt->bssid, auth_transaction); +#endif + sta_info_destroy_addr(sdata, mgmt->sa); + ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, 0, false); + rcu_read_unlock(); + + /* + * IEEE 802.11 standard does not require authentication in IBSS + * networks and most implementations do not seem to use it. + * However, try to reply to authentication attempts if someone + * has actually implemented this. + */ + ieee80211_send_auth(sdata, 2, WLAN_AUTH_OPEN, NULL, 0, + mgmt->sa, sdata->u.ibss.bssid, NULL, 0, 0); } static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, @@ -381,7 +403,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, return; if (sdata->vif.type == NL80211_IFTYPE_ADHOC && - memcmp(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0) { + compare_ether_addr(mgmt->bssid, sdata->u.ibss.bssid) == 0) { rcu_read_lock(); sta = sta_info_get(sdata, mgmt->sa); @@ -412,7 +434,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, } else { rcu_read_unlock(); sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid, - mgmt->sa, supp_rates); + mgmt->sa, supp_rates, true); } } @@ -486,7 +508,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, goto put_bss; /* same BSSID */ - if (memcmp(cbss->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0) + if (compare_ether_addr(cbss->bssid, sdata->u.ibss.bssid) == 0) goto put_bss; if (rx_status->flag & RX_FLAG_MACTIME_MPDU) { @@ -540,7 +562,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, ieee80211_sta_join_ibss(sdata, bss); supp_rates = ieee80211_sta_get_rates(local, elems, band); ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, - supp_rates); + supp_rates, true); rcu_read_unlock(); } @@ -643,8 +665,7 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata) "IBSS networks with same SSID (merge)\n", sdata->name); ieee80211_request_internal_scan(sdata, - ifibss->ssid, ifibss->ssid_len, - ifibss->fixed_channel ? ifibss->channel : NULL); + ifibss->ssid, ifibss->ssid_len, NULL); } static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) @@ -810,8 +831,8 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, if (!tx_last_beacon && is_multicast_ether_addr(mgmt->da)) return; - if (memcmp(mgmt->bssid, ifibss->bssid, ETH_ALEN) != 0 && - memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) + if (compare_ether_addr(mgmt->bssid, ifibss->bssid) != 0 && + !is_broadcast_ether_addr(mgmt->bssid)) return; end = ((u8 *) mgmt) + len; @@ -855,9 +876,6 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, size_t baselen; struct ieee802_11_elems elems; - if (memcmp(mgmt->da, sdata->vif.addr, ETH_ALEN)) - return; /* ignore ProbeResp to foreign address */ - baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; if (baselen > len) return; @@ -945,7 +963,7 @@ void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata) list_del(&sta->list); spin_unlock_bh(&ifibss->incomplete_lock); - ieee80211_ibss_finish_sta(sta); + ieee80211_ibss_finish_sta(sta, true); rcu_read_unlock(); spin_lock_bh(&ifibss->incomplete_lock); } @@ -1059,6 +1077,7 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, sdata->u.ibss.fixed_bssid = false; sdata->u.ibss.privacy = params->privacy; + sdata->u.ibss.control_port = params->control_port; sdata->u.ibss.basic_rates = params->basic_rates; memcpy(sdata->vif.bss_conf.mcast_rate, params->mcast_rate, sizeof(params->mcast_rate)); diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 2f0642d9e154..d9798a307f20 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -105,6 +105,44 @@ struct ieee80211_bss { */ bool has_erp_value; u8 erp_value; + + /* Keep track of the corruption of the last beacon/probe response. */ + u8 corrupt_data; + + /* Keep track of what bits of information we have valid info for. */ + u8 valid_data; +}; + +/** + * enum ieee80211_corrupt_data_flags - BSS data corruption flags + * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted + * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted + * + * These are bss flags that are attached to a bss in the + * @corrupt_data field of &struct ieee80211_bss. + */ +enum ieee80211_bss_corrupt_data_flags { + IEEE80211_BSS_CORRUPT_BEACON = BIT(0), + IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) +}; + +/** + * enum ieee80211_valid_data_flags - BSS valid data flags + * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE + * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE + * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE + * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE + * + * These are bss flags that are attached to a bss in the + * @valid_data field of &struct ieee80211_bss. They show which parts + * of the data structure were recieved as a result of an un-corrupted + * beacon/probe response. + */ +enum ieee80211_bss_valid_data_flags { + IEEE80211_BSS_VALID_DTIM = BIT(0), + IEEE80211_BSS_VALID_WMM = BIT(1), + IEEE80211_BSS_VALID_RATES = BIT(2), + IEEE80211_BSS_VALID_ERP = BIT(3) }; static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) @@ -228,7 +266,7 @@ struct ieee80211_rx_data { struct beacon_data { u8 *head, *tail; int head_len, tail_len; - int dtim_period; + struct rcu_head rcu_head; }; struct ieee80211_if_ap { @@ -280,10 +318,6 @@ struct mesh_preq_queue { enum ieee80211_work_type { IEEE80211_WORK_ABORT, - IEEE80211_WORK_DIRECT_PROBE, - IEEE80211_WORK_AUTH, - IEEE80211_WORK_ASSOC_BEACON_WAIT, - IEEE80211_WORK_ASSOC, IEEE80211_WORK_REMAIN_ON_CHANNEL, IEEE80211_WORK_OFFCHANNEL_TX, }; @@ -316,36 +350,10 @@ struct ieee80211_work { unsigned long timeout; enum ieee80211_work_type type; - u8 filter_ta[ETH_ALEN]; - bool started; union { struct { - int tries; - u16 algorithm, transaction; - u8 ssid[IEEE80211_MAX_SSID_LEN]; - u8 ssid_len; - u8 key[WLAN_KEY_LEN_WEP104]; - u8 key_len, key_idx; - bool privacy; - bool synced; - } probe_auth; - struct { - struct cfg80211_bss *bss; - const u8 *supp_rates; - const u8 *ht_information_ie; - enum ieee80211_smps_mode smps; - int tries; - u16 capability; - u8 prev_bssid[ETH_ALEN]; - u8 ssid[IEEE80211_MAX_SSID_LEN]; - u8 ssid_len; - u8 supp_rates_len; - bool wmm_used, use_11n, uapsd_used; - bool synced; - } assoc; - struct { u32 duration; } remain; struct { @@ -355,9 +363,8 @@ struct ieee80211_work { } offchan_tx; }; - int ie_len; - /* must be last */ - u8 ie[0]; + size_t data_len; + u8 data[]; }; /* flags used in struct ieee80211_if_managed.flags */ @@ -373,6 +380,42 @@ enum ieee80211_sta_flags { IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), }; +struct ieee80211_mgd_auth_data { + struct cfg80211_bss *bss; + unsigned long timeout; + int tries; + u16 algorithm, expected_transaction; + + u8 key[WLAN_KEY_LEN_WEP104]; + u8 key_len, key_idx; + bool done; + + size_t ie_len; + u8 ie[]; +}; + +struct ieee80211_mgd_assoc_data { + struct cfg80211_bss *bss; + const u8 *supp_rates; + const u8 *ht_information_ie; + + unsigned long timeout; + int tries; + + u16 capability; + u8 prev_bssid[ETH_ALEN]; + u8 ssid[IEEE80211_MAX_SSID_LEN]; + u8 ssid_len; + u8 supp_rates_len; + bool wmm, uapsd; + bool have_beacon; + bool sent_assoc; + bool synced; + + size_t ie_len; + u8 ie[]; +}; + struct ieee80211_if_managed { struct timer_list timer; struct timer_list conn_mon_timer; @@ -389,6 +432,8 @@ struct ieee80211_if_managed { struct mutex mtx; struct cfg80211_bss *associated; + struct ieee80211_mgd_auth_data *auth_data; + struct ieee80211_mgd_assoc_data *assoc_data; u8 bssid[ETH_ALEN]; @@ -414,6 +459,20 @@ struct ieee80211_if_managed { IEEE80211_MFP_REQUIRED } mfp; /* management frame protection */ + /* + * Bitmask of enabled u-apsd queues, + * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association + * to take effect. + */ + unsigned int uapsd_queues; + + /* + * Maximum number of buffered frames AP can deliver during a + * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. + * Needs a new association to take effect. + */ + unsigned int uapsd_max_sp_len; + int wmm_last_param_set; u8 use_4addr; @@ -470,7 +529,9 @@ struct ieee80211_if_ibss { bool fixed_channel; bool privacy; - u8 bssid[ETH_ALEN]; + bool control_port; + + u8 bssid[ETH_ALEN] __aligned(2); u8 ssid[IEEE80211_MAX_SSID_LEN]; u8 ssid_len, ie_len; u8 *ie; @@ -646,6 +707,7 @@ struct ieee80211_sub_if_data { /* bitmap of allowed (non-MCS) rate indexes for rate control */ u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; + u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; union { struct ieee80211_if_ap ap; @@ -769,7 +831,6 @@ struct ieee80211_local { struct list_head work_list; struct timer_list work_timer; struct work_struct work_work; - struct sk_buff_head work_skb_queue; /* * private workqueue to mac80211. mac80211 makes this accessible @@ -970,20 +1031,6 @@ struct ieee80211_local { */ unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ - /* - * Bitmask of enabled u-apsd queues, - * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association - * to take effect. - */ - unsigned int uapsd_queues; - - /* - * Maximum number of buffered frames AP can deliver during a - * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. - * Needs a new association to take effect. - */ - unsigned int uapsd_max_sp_len; - bool pspolling; bool offchannel_ps_enabled; /* @@ -1110,6 +1157,9 @@ struct ieee802_11_elems { u8 quiet_elem_len; u8 num_of_quiet_elem; /* can be more the one */ u8 timeout_int_len; + + /* whether a parse error occurred while retrieving these elements */ + bool parse_error; }; static inline struct ieee80211_local *hw_to_local( @@ -1118,12 +1168,6 @@ static inline struct ieee80211_local *hw_to_local( return container_of(hw, struct ieee80211_local, hw); } -static inline struct ieee80211_hw *local_to_hw( - struct ieee80211_local *local) -{ - return &local->hw; -} - static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) { @@ -1146,11 +1190,9 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, struct cfg80211_assoc_request *req); int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, - struct cfg80211_deauth_request *req, - void *cookie); + struct cfg80211_deauth_request *req); int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, - struct cfg80211_disassoc_request *req, - void *cookie); + struct cfg80211_disassoc_request *req); void ieee80211_send_pspoll(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata); void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); @@ -1168,6 +1210,7 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); +void ieee80211_mgd_teardown(struct ieee80211_sub_if_data *sdata); /* IBSS code */ void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); @@ -1345,7 +1388,8 @@ int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, struct ieee80211_hdr *hdr, const u8 *tsc, gfp_t gfp); -void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); +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); void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, @@ -1396,7 +1440,7 @@ void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, u16 transaction, u16 auth_alg, u8 *extra, size_t extra_len, const u8 *bssid, - const u8 *key, u8 key_len, u8 key_idx); + const u8 *da, const u8 *key, u8 key_len, u8 key_idx); int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, const u8 *ie, size_t ie_len, enum ieee80211_band band, u32 rate_mask, @@ -1436,8 +1480,6 @@ void ieee80211_work_init(struct ieee80211_local *local); void ieee80211_add_work(struct ieee80211_work *wk); void free_work(struct ieee80211_work *wk); void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); -ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata, - struct sk_buff *skb); int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, struct ieee80211_channel *chan, enum nl80211_channel_type channel_type, @@ -1460,6 +1502,9 @@ bool ieee80211_set_channel_type(struct ieee80211_local *local, enum nl80211_channel_type chantype); enum nl80211_channel_type ieee80211_ht_info_to_channel_type(struct ieee80211_ht_info *ht_info); +enum nl80211_channel_type ieee80211_get_tx_channel_type( + struct ieee80211_local *local, + enum nl80211_channel_type channel_type); #ifdef CONFIG_MAC80211_NOINLINE #define debug_noinline noinline diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 01a21c2f6ab3..401c01f0731e 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -304,7 +304,7 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up) * need to initialise the hardware if the hardware * doesn't start up with sane defaults */ - ieee80211_set_wmm_default(sdata); + ieee80211_set_wmm_default(sdata, true); } set_bit(SDATA_STATE_RUNNING, &sdata->state); @@ -318,9 +318,9 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up) goto err_del_interface; } - sta_info_move_state(sta, IEEE80211_STA_AUTH); - sta_info_move_state(sta, IEEE80211_STA_ASSOC); - sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); + sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); + sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); + sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); res = sta_info_insert(sta); if (res) { @@ -644,6 +644,8 @@ static void ieee80211_teardown_sdata(struct net_device *dev) if (ieee80211_vif_is_mesh(&sdata->vif)) mesh_rmc_free(sdata); + else if (sdata->vif.type == NL80211_IFTYPE_STATION) + ieee80211_mgd_teardown(sdata); flushed = sta_info_flush(local, sdata); WARN_ON(flushed); @@ -1181,6 +1183,13 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, sband = local->hw.wiphy->bands[i]; sdata->rc_rateidx_mask[i] = sband ? (1 << sband->n_bitrates) - 1 : 0; + if (sband) + memcpy(sdata->rc_rateidx_mcs_mask[i], + sband->ht_cap.mcs.rx_mask, + sizeof(sdata->rc_rateidx_mcs_mask[i])); + else + memset(sdata->rc_rateidx_mcs_mask[i], 0, + sizeof(sdata->rc_rateidx_mcs_mask[i])); } /* setup type-dependent data */ @@ -1303,7 +1312,9 @@ u32 __ieee80211_recalc_idle(struct ieee80211_local *local) /* do not count disabled managed interfaces */ if (sdata->vif.type == NL80211_IFTYPE_STATION && - !sdata->u.mgd.associated) { + !sdata->u.mgd.associated && + !sdata->u.mgd.auth_data && + !sdata->u.mgd.assoc_data) { sdata->vif.bss_conf.idle = true; continue; } @@ -1323,7 +1334,8 @@ u32 __ieee80211_recalc_idle(struct ieee80211_local *local) wk->sdata->vif.bss_conf.idle = false; } - if (local->scan_sdata) { + if (local->scan_sdata && + !(local->hw.flags & IEEE80211_HW_SCAN_WHILE_IDLE)) { scanning = true; local->scan_sdata->vif.bss_conf.idle = false; } @@ -1332,6 +1344,9 @@ u32 __ieee80211_recalc_idle(struct ieee80211_local *local) hw_roc = true; list_for_each_entry(sdata, &local->interfaces, list) { + if (sdata->vif.type == NL80211_IFTYPE_MONITOR || + sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + continue; if (sdata->old_idle == sdata->vif.bss_conf.idle) continue; if (!ieee80211_sdata_running(sdata)) diff --git a/net/mac80211/key.c b/net/mac80211/key.c index 87a89741432d..5bb600d93d77 100644 --- a/net/mac80211/key.c +++ b/net/mac80211/key.c @@ -17,6 +17,7 @@ #include <linux/slab.h> #include <linux/export.h> #include <net/mac80211.h> +#include <asm/unaligned.h> #include "ieee80211_i.h" #include "driver-ops.h" #include "debugfs_key.h" @@ -54,14 +55,6 @@ static void assert_key_lock(struct ieee80211_local *local) lockdep_assert_held(&local->key_mtx); } -static struct ieee80211_sta *get_sta_for_key(struct ieee80211_key *key) -{ - if (key->sta) - return &key->sta->sta; - - return NULL; -} - static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata) { /* @@ -95,7 +88,7 @@ static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata) static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) { struct ieee80211_sub_if_data *sdata; - struct ieee80211_sta *sta; + struct sta_info *sta; int ret; might_sleep(); @@ -105,7 +98,7 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) assert_key_lock(key->local); - sta = get_sta_for_key(key); + sta = key->sta; /* * If this is a per-STA GTK, check if it @@ -115,6 +108,9 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) !(key->local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK)) goto out_unsupported; + if (sta && !sta->uploaded) + goto out_unsupported; + sdata = key->sdata; if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { /* @@ -123,12 +119,10 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) */ if (!(key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE)) goto out_unsupported; - sdata = container_of(sdata->bss, - struct ieee80211_sub_if_data, - u.ap); } - ret = drv_set_key(key->local, SET_KEY, sdata, sta, &key->conf); + ret = drv_set_key(key->local, SET_KEY, sdata, + sta ? &sta->sta : NULL, &key->conf); if (!ret) { key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE; @@ -147,7 +141,8 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) if (ret != -ENOSPC && ret != -EOPNOTSUPP) wiphy_err(key->local->hw.wiphy, "failed to set key (%d, %pM) to hardware (%d)\n", - key->conf.keyidx, sta ? sta->addr : bcast_addr, ret); + key->conf.keyidx, + sta ? sta->sta.addr : bcast_addr, ret); out_unsupported: switch (key->conf.cipher) { @@ -166,7 +161,7 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key) { struct ieee80211_sub_if_data *sdata; - struct ieee80211_sta *sta; + struct sta_info *sta; int ret; might_sleep(); @@ -179,7 +174,7 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key) if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) return; - sta = get_sta_for_key(key); + sta = key->sta; sdata = key->sdata; if (!((key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIC) || @@ -187,18 +182,14 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key) (key->conf.flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE))) increment_tailroom_need_count(sdata); - if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) - sdata = container_of(sdata->bss, - struct ieee80211_sub_if_data, - u.ap); - ret = drv_set_key(key->local, DISABLE_KEY, sdata, - sta, &key->conf); + sta ? &sta->sta : NULL, &key->conf); if (ret) wiphy_err(key->local->hw.wiphy, "failed to remove key (%d, %pM) from hardware (%d)\n", - key->conf.keyidx, sta ? sta->addr : bcast_addr, ret); + key->conf.keyidx, + sta ? sta->sta.addr : bcast_addr, ret); key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE; } diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 0a0d94ad9b08..b581a24fa15c 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -155,7 +155,8 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) power = chan->max_power; else power = local->power_constr_level ? - (chan->max_power - local->power_constr_level) : + min(chan->max_power, + (chan->max_reg_power - local->power_constr_level)) : chan->max_power; if (local->user_power_level >= 0) @@ -198,15 +199,7 @@ void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, return; if (sdata->vif.type == NL80211_IFTYPE_STATION) { - /* - * While not associated, claim a BSSID of all-zeroes - * so that drivers don't do any weird things with the - * BSSID at that time. - */ - if (sdata->vif.bss_conf.assoc) - sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; - else - sdata->vif.bss_conf.bssid = zero; + sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; else if (sdata->vif.type == NL80211_IFTYPE_AP) @@ -293,11 +286,11 @@ static void ieee80211_tasklet_handler(unsigned long data) /* Clear skb->pkt_type in order to not confuse kernel * netstack. */ skb->pkt_type = 0; - ieee80211_rx(local_to_hw(local), skb); + ieee80211_rx(&local->hw, skb); break; case IEEE80211_TX_STATUS_MSG: skb->pkt_type = 0; - ieee80211_tx_status(local_to_hw(local), skb); + ieee80211_tx_status(&local->hw, skb); break; case IEEE80211_EOSP_MSG: eosp_data = (void *)skb->cb; @@ -534,6 +527,9 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, int priv_size, i; struct wiphy *wiphy; + if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) + return NULL; + /* Ensure 32-byte alignment of our private data and hw private data. * We use the wiphy priv data for both our ieee80211_local and for * the driver's private data @@ -599,8 +595,6 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; local->user_power_level = -1; - local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; - local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; INIT_LIST_HEAD(&local->interfaces); @@ -672,7 +666,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, ieee80211_hw_roc_setup(local); - return local_to_hw(local); + return &local->hw; } EXPORT_SYMBOL(ieee80211_alloc_hw); @@ -701,6 +695,9 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) ) return -EINVAL; + if ((hw->flags & IEEE80211_HW_SCAN_WHILE_IDLE) && !local->ops->hw_scan) + return -EINVAL; + if (hw->max_report_rates == 0) hw->max_report_rates = hw->max_rates; @@ -910,6 +907,8 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n", result); + ieee80211_led_init(local); + rtnl_lock(); result = ieee80211_init_rate_ctrl_alg(local, @@ -931,8 +930,6 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) rtnl_unlock(); - ieee80211_led_init(local); - local->network_latency_notifier.notifier_call = ieee80211_max_network_latency; result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index c707c8bf6d2c..e5fbb7cf3562 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -204,7 +204,7 @@ int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr, kmem_cache_free(rm_cache, p); --entries; } else if ((seqnum == p->seqnum) && - (memcmp(sa, p->sa, ETH_ALEN) == 0)) + (compare_ether_addr(sa, p->sa) == 0)) return -1; } diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h index bd14bd26a2b6..8d53b71378e3 100644 --- a/net/mac80211/mesh.h +++ b/net/mac80211/mesh.h @@ -13,7 +13,6 @@ #include <linux/types.h> #include <linux/jhash.h> -#include <asm/unaligned.h> #include "ieee80211_i.h" @@ -86,6 +85,8 @@ enum mesh_deferred_task_flags { * @state_lock: mesh path state lock used to protect changes to the * mpath itself. No need to take this lock when adding or removing * an mpath to a hash bucket on a path table. + * @rann_snd_addr: the RANN sender address + * @is_root: the destination station of this path is a root node * @is_gate: the destination station of this path is a mesh gate * * @@ -110,6 +111,8 @@ struct mesh_path { u8 discovery_retries; enum mesh_path_flags flags; spinlock_t state_lock; + u8 rann_snd_addr[ETH_ALEN]; + bool is_root; bool is_gate; }; diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c index 54df1b2bafd2..1c6f3d02aebf 100644 --- a/net/mac80211/mesh_hwmp.c +++ b/net/mac80211/mesh_hwmp.c @@ -8,6 +8,8 @@ */ #include <linux/slab.h> +#include <linux/etherdevice.h> +#include <asm/unaligned.h> #include "wme.h" #include "mesh.h" @@ -322,6 +324,7 @@ static u32 airtime_link_metric_get(struct ieee80211_local *local, struct sta_info *sta) { struct ieee80211_supported_band *sband; + struct rate_info rinfo; /* This should be adjusted for each device */ int device_constant = 1 << ARITH_SHIFT; int test_frame_len = TEST_FRAME_LEN << ARITH_SHIFT; @@ -335,7 +338,9 @@ static u32 airtime_link_metric_get(struct ieee80211_local *local, if (sta->fail_avg >= 100) return MAX_METRIC; - if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS) + sta_set_rate_info_tx(sta, &sta->last_tx_rate, &rinfo); + rate = cfg80211_calculate_bitrate(&rinfo); + if (WARN_ON(!rate)) return MAX_METRIC; err = (sta->fail_avg << ARITH_SHIFT) / 100; @@ -343,7 +348,6 @@ static u32 airtime_link_metric_get(struct ieee80211_local *local, /* bitrate is in units of 100 Kbps, while we need rate in units of * 1Mbps. This will be corrected on tx_time computation. */ - rate = sband->bitrates[sta->last_tx_rate.idx].bitrate; tx_time = (device_constant + 10 * test_frame_len / rate); estimated_retx = ((1 << (2 * ARITH_SHIFT)) / (s_unit - err)); result = (tx_time * estimated_retx) >> (2 * ARITH_SHIFT) ; @@ -418,7 +422,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata, new_metric = MAX_METRIC; exp_time = TU_TO_EXP_TIME(orig_lifetime); - if (memcmp(orig_addr, sdata->vif.addr, ETH_ALEN) == 0) { + if (compare_ether_addr(orig_addr, sdata->vif.addr) == 0) { /* This MP is the originator, we are not interested in this * frame, except for updating transmitter's path info. */ @@ -468,7 +472,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata, /* Update and check transmitter routing info */ ta = mgmt->sa; - if (memcmp(orig_addr, ta, ETH_ALEN) == 0) + if (compare_ether_addr(orig_addr, ta) == 0) fresh_info = false; else { fresh_info = true; @@ -512,8 +516,9 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata, u8 *preq_elem, u32 metric) { struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; - struct mesh_path *mpath; + struct mesh_path *mpath = NULL; u8 *target_addr, *orig_addr; + const u8 *da; u8 target_flags, ttl; u32 orig_sn, target_sn, lifetime; bool reply = false; @@ -528,7 +533,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata, mhwmp_dbg("received PREQ from %pM", orig_addr); - if (memcmp(target_addr, sdata->vif.addr, ETH_ALEN) == 0) { + if (compare_ether_addr(target_addr, sdata->vif.addr) == 0) { mhwmp_dbg("PREQ is for us"); forward = false; reply = true; @@ -575,7 +580,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata, ifmsh->mshstats.dropped_frames_ttl++; } - if (forward) { + if (forward && ifmsh->mshcfg.dot11MeshForwarding) { u32 preq_id; u8 hopcount, flags; @@ -590,9 +595,11 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata, flags = PREQ_IE_FLAGS(preq_elem); preq_id = PREQ_IE_PREQ_ID(preq_elem); hopcount = PREQ_IE_HOPCOUNT(preq_elem) + 1; + da = (mpath && mpath->is_root) ? + mpath->rann_snd_addr : broadcast_addr; mesh_path_sel_frame_tx(MPATH_PREQ, flags, orig_addr, cpu_to_le32(orig_sn), target_flags, target_addr, - cpu_to_le32(target_sn), broadcast_addr, + cpu_to_le32(target_sn), da, hopcount, ttl, cpu_to_le32(lifetime), cpu_to_le32(metric), cpu_to_le32(preq_id), sdata); @@ -614,6 +621,7 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, u8 *prep_elem, u32 metric) { + struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; struct mesh_path *mpath; u8 *target_addr, *orig_addr; u8 ttl, hopcount, flags; @@ -623,10 +631,13 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata, mhwmp_dbg("received PREP from %pM", PREP_IE_ORIG_ADDR(prep_elem)); orig_addr = PREP_IE_ORIG_ADDR(prep_elem); - if (memcmp(orig_addr, sdata->vif.addr, ETH_ALEN) == 0) + if (compare_ether_addr(orig_addr, sdata->vif.addr) == 0) /* destination, no forwarding required */ return; + if (!ifmsh->mshcfg.dot11MeshForwarding) + return; + ttl = PREP_IE_TTL(prep_elem); if (ttl <= 1) { sdata->u.mesh.mshstats.dropped_frames_ttl++; @@ -693,21 +704,26 @@ static void hwmp_perr_frame_process(struct ieee80211_sub_if_data *sdata, rcu_read_lock(); mpath = mesh_path_lookup(target_addr, sdata); if (mpath) { + struct sta_info *sta; + spin_lock_bh(&mpath->state_lock); + sta = next_hop_deref_protected(mpath); if (mpath->flags & MESH_PATH_ACTIVE && - memcmp(ta, next_hop_deref_protected(mpath)->sta.addr, - ETH_ALEN) == 0 && + compare_ether_addr(ta, sta->sta.addr) == 0 && (!(mpath->flags & MESH_PATH_SN_VALID) || SN_GT(target_sn, mpath->sn))) { mpath->flags &= ~MESH_PATH_ACTIVE; mpath->sn = target_sn; spin_unlock_bh(&mpath->state_lock); + if (!ifmsh->mshcfg.dot11MeshForwarding) + goto endperr; mesh_path_error_tx(ttl, target_addr, cpu_to_le32(target_sn), cpu_to_le16(target_rcode), broadcast_addr, sdata); } else spin_unlock_bh(&mpath->state_lock); } +endperr: rcu_read_unlock(); } @@ -738,11 +754,11 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata, metric = rann->rann_metric; /* Ignore our own RANNs */ - if (memcmp(orig_addr, sdata->vif.addr, ETH_ALEN) == 0) + if (compare_ether_addr(orig_addr, sdata->vif.addr) == 0) return; - mhwmp_dbg("received RANN from %pM (is_gate=%d)", orig_addr, - root_is_gate); + mhwmp_dbg("received RANN from %pM via neighbour %pM (is_gate=%d)", + orig_addr, mgmt->sa, root_is_gate); rcu_read_lock(); mpath = mesh_path_lookup(orig_addr, sdata); @@ -764,7 +780,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata, mesh_queue_preq(mpath, PREQ_Q_F_START | PREQ_Q_F_REFRESH); } - if (mpath->sn < orig_sn) { + if (mpath->sn < orig_sn && ifmsh->mshcfg.dot11MeshForwarding) { mesh_path_sel_frame_tx(MPATH_RANN, flags, orig_addr, cpu_to_le32(orig_sn), 0, NULL, 0, broadcast_addr, @@ -773,6 +789,11 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata, 0, sdata); mpath->sn = orig_sn; } + + /* Using individually addressed PREQ for root node */ + memcpy(mpath->rann_snd_addr, mgmt->sa, ETH_ALEN); + mpath->is_root = true; + if (root_is_gate) mesh_path_add_gate(mpath); @@ -908,6 +929,7 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata) struct mesh_preq_queue *preq_node; struct mesh_path *mpath; u8 ttl, target_flags; + const u8 *da; u32 lifetime; spin_lock_bh(&ifmsh->mesh_preq_queue_lock); @@ -970,9 +992,10 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata) target_flags = MP_F_RF; spin_unlock_bh(&mpath->state_lock); + da = (mpath->is_root) ? mpath->rann_snd_addr : broadcast_addr; mesh_path_sel_frame_tx(MPATH_PREQ, 0, sdata->vif.addr, cpu_to_le32(ifmsh->sn), target_flags, mpath->dst, - cpu_to_le32(mpath->sn), broadcast_addr, 0, + cpu_to_le32(mpath->sn), da, 0, ttl, cpu_to_le32(lifetime), 0, cpu_to_le32(ifmsh->preq_id++), sdata); mod_timer(&mpath->timer, jiffies + mpath->discovery_timeout); @@ -1063,7 +1086,7 @@ int mesh_nexthop_lookup(struct sk_buff *skb, if (time_after(jiffies, mpath->exp_time - msecs_to_jiffies(sdata->u.mesh.mshcfg.path_refresh_time)) && - !memcmp(sdata->vif.addr, hdr->addr4, ETH_ALEN) && + !compare_ether_addr(sdata->vif.addr, hdr->addr4) && !(mpath->flags & MESH_PATH_RESOLVING) && !(mpath->flags & MESH_PATH_FIXED)) mesh_queue_preq(mpath, PREQ_Q_F_START | PREQ_Q_F_REFRESH); diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c index edf167e3b8f3..49aaefd99635 100644 --- a/net/mac80211/mesh_pathtbl.c +++ b/net/mac80211/mesh_pathtbl.c @@ -336,7 +336,7 @@ static void mesh_path_move_to_queue(struct mesh_path *gate_mpath, } -static struct mesh_path *path_lookup(struct mesh_table *tbl, u8 *dst, +static struct mesh_path *mpath_lookup(struct mesh_table *tbl, u8 *dst, struct ieee80211_sub_if_data *sdata) { struct mesh_path *mpath; @@ -348,7 +348,7 @@ static struct mesh_path *path_lookup(struct mesh_table *tbl, u8 *dst, hlist_for_each_entry_rcu(node, n, bucket, list) { mpath = node->mpath; if (mpath->sdata == sdata && - memcmp(dst, mpath->dst, ETH_ALEN) == 0) { + compare_ether_addr(dst, mpath->dst) == 0) { if (MPATH_EXPIRED(mpath)) { spin_lock_bh(&mpath->state_lock); mpath->flags &= ~MESH_PATH_ACTIVE; @@ -371,12 +371,12 @@ static struct mesh_path *path_lookup(struct mesh_table *tbl, u8 *dst, */ struct mesh_path *mesh_path_lookup(u8 *dst, struct ieee80211_sub_if_data *sdata) { - return path_lookup(rcu_dereference(mesh_paths), dst, sdata); + return mpath_lookup(rcu_dereference(mesh_paths), dst, sdata); } struct mesh_path *mpp_path_lookup(u8 *dst, struct ieee80211_sub_if_data *sdata) { - return path_lookup(rcu_dereference(mpp_paths), dst, sdata); + return mpath_lookup(rcu_dereference(mpp_paths), dst, sdata); } @@ -413,12 +413,6 @@ struct mesh_path *mesh_path_lookup_by_idx(int idx, struct ieee80211_sub_if_data return NULL; } -static void mesh_gate_node_reclaim(struct rcu_head *rp) -{ - struct mpath_node *node = container_of(rp, struct mpath_node, rcu); - kfree(node); -} - /** * mesh_path_add_gate - add the given mpath to a mesh gate to our path table * @mpath: gate path to add to table @@ -479,7 +473,7 @@ static int mesh_gate_del(struct mesh_table *tbl, struct mesh_path *mpath) if (gate->mpath == mpath) { spin_lock_bh(&tbl->gates_lock); hlist_del_rcu(&gate->list); - call_rcu(&gate->rcu, mesh_gate_node_reclaim); + kfree_rcu(gate, rcu); spin_unlock_bh(&tbl->gates_lock); mpath->sdata->u.mesh.num_gates--; mpath->is_gate = false; @@ -523,7 +517,7 @@ int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata) int err = 0; u32 hash_idx; - if (memcmp(dst, sdata->vif.addr, ETH_ALEN) == 0) + if (compare_ether_addr(dst, sdata->vif.addr) == 0) /* never add ourselves as neighbours */ return -ENOTSUPP; @@ -559,12 +553,13 @@ int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata) hash_idx = mesh_table_hash(dst, sdata, tbl); bucket = &tbl->hash_buckets[hash_idx]; - spin_lock_bh(&tbl->hashwlock[hash_idx]); + spin_lock(&tbl->hashwlock[hash_idx]); err = -EEXIST; hlist_for_each_entry(node, n, bucket, list) { mpath = node->mpath; - if (mpath->sdata == sdata && memcmp(dst, mpath->dst, ETH_ALEN) == 0) + if (mpath->sdata == sdata && + compare_ether_addr(dst, mpath->dst) == 0) goto err_exists; } @@ -575,7 +570,7 @@ int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata) mesh_paths_generation++; - spin_unlock_bh(&tbl->hashwlock[hash_idx]); + spin_unlock(&tbl->hashwlock[hash_idx]); read_unlock_bh(&pathtbl_resize_lock); if (grow) { set_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags); @@ -584,7 +579,7 @@ int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata) return 0; err_exists: - spin_unlock_bh(&tbl->hashwlock[hash_idx]); + spin_unlock(&tbl->hashwlock[hash_idx]); read_unlock_bh(&pathtbl_resize_lock); kfree(new_node); err_node_alloc: @@ -655,7 +650,7 @@ int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata) int err = 0; u32 hash_idx; - if (memcmp(dst, sdata->vif.addr, ETH_ALEN) == 0) + if (compare_ether_addr(dst, sdata->vif.addr) == 0) /* never add ourselves as neighbours */ return -ENOTSUPP; @@ -687,12 +682,13 @@ int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata) hash_idx = mesh_table_hash(dst, sdata, tbl); bucket = &tbl->hash_buckets[hash_idx]; - spin_lock_bh(&tbl->hashwlock[hash_idx]); + spin_lock(&tbl->hashwlock[hash_idx]); err = -EEXIST; hlist_for_each_entry(node, n, bucket, list) { mpath = node->mpath; - if (mpath->sdata == sdata && memcmp(dst, mpath->dst, ETH_ALEN) == 0) + if (mpath->sdata == sdata && + compare_ether_addr(dst, mpath->dst) == 0) goto err_exists; } @@ -701,7 +697,7 @@ int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata) tbl->mean_chain_len * (tbl->hash_mask + 1)) grow = 1; - spin_unlock_bh(&tbl->hashwlock[hash_idx]); + spin_unlock(&tbl->hashwlock[hash_idx]); read_unlock_bh(&pathtbl_resize_lock); if (grow) { set_bit(MESH_WORK_GROW_MPP_TABLE, &ifmsh->wrkq_flags); @@ -710,7 +706,7 @@ int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata) return 0; err_exists: - spin_unlock_bh(&tbl->hashwlock[hash_idx]); + spin_unlock(&tbl->hashwlock[hash_idx]); read_unlock_bh(&pathtbl_resize_lock); kfree(new_node); err_node_alloc: @@ -809,9 +805,9 @@ void mesh_path_flush_by_nexthop(struct sta_info *sta) for_each_mesh_entry(tbl, p, node, i) { mpath = node->mpath; if (rcu_dereference(mpath->next_hop) == sta) { - spin_lock_bh(&tbl->hashwlock[i]); + spin_lock(&tbl->hashwlock[i]); __mesh_path_del(tbl, node); - spin_unlock_bh(&tbl->hashwlock[i]); + spin_unlock(&tbl->hashwlock[i]); } } read_unlock_bh(&pathtbl_resize_lock); @@ -882,11 +878,11 @@ int mesh_path_del(u8 *addr, struct ieee80211_sub_if_data *sdata) hash_idx = mesh_table_hash(addr, sdata, tbl); bucket = &tbl->hash_buckets[hash_idx]; - spin_lock_bh(&tbl->hashwlock[hash_idx]); + spin_lock(&tbl->hashwlock[hash_idx]); hlist_for_each_entry(node, n, bucket, list) { mpath = node->mpath; if (mpath->sdata == sdata && - memcmp(addr, mpath->dst, ETH_ALEN) == 0) { + compare_ether_addr(addr, mpath->dst) == 0) { __mesh_path_del(tbl, node); goto enddel; } @@ -895,7 +891,7 @@ int mesh_path_del(u8 *addr, struct ieee80211_sub_if_data *sdata) err = -ENXIO; enddel: mesh_paths_generation++; - spin_unlock_bh(&tbl->hashwlock[hash_idx]); + spin_unlock(&tbl->hashwlock[hash_idx]); read_unlock_bh(&pathtbl_resize_lock); return err; } diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c index a17251730b9e..4e53c4cbca9e 100644 --- a/net/mac80211/mesh_plink.c +++ b/net/mac80211/mesh_plink.c @@ -31,6 +31,12 @@ #define dot11MeshHoldingTimeout(s) (s->u.mesh.mshcfg.dot11MeshHoldingTimeout) #define dot11MeshMaxPeerLinks(s) (s->u.mesh.mshcfg.dot11MeshMaxPeerLinks) +/* We only need a valid sta if user configured a minimum rssi_threshold. */ +#define rssi_threshold_check(sta, sdata) \ + (sdata->u.mesh.mshcfg.rssi_threshold == 0 ||\ + (sta && (s8) -ewma_read(&sta->avg_signal) > \ + sdata->u.mesh.mshcfg.rssi_threshold)) + enum plink_event { PLINK_UNDEFINED, OPN_ACPT, @@ -96,9 +102,9 @@ static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata, if (!sta) return NULL; - sta_info_move_state(sta, IEEE80211_STA_AUTH); - sta_info_move_state(sta, IEEE80211_STA_ASSOC); - sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); + sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); + sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); + sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); set_sta_flag(sta, WLAN_STA_WME); @@ -301,7 +307,8 @@ void mesh_neighbour_update(u8 *hw_addr, u32 rates, if (mesh_peer_accepts_plinks(elems) && sta->plink_state == NL80211_PLINK_LISTEN && sdata->u.mesh.accepting_plinks && - sdata->u.mesh.mshcfg.auto_open_plinks) + sdata->u.mesh.mshcfg.auto_open_plinks && + rssi_threshold_check(sta, sdata)) mesh_plink_open(sta); rcu_read_unlock(); @@ -531,6 +538,14 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m return; } + if (ftype == WLAN_SP_MESH_PEERING_OPEN && + !rssi_threshold_check(sta, sdata)) { + mpl_dbg("Mesh plink: %pM does not meet rssi threshold\n", + mgmt->sa); + rcu_read_unlock(); + return; + } + if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { mpl_dbg("Mesh plink: Action frame from non-authed peer\n"); rcu_read_unlock(); diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 295be92f7c77..576fb25456dd 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -30,6 +30,12 @@ #include "rate.h" #include "led.h" +#define IEEE80211_AUTH_TIMEOUT (HZ / 5) +#define IEEE80211_AUTH_MAX_TRIES 3 +#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5) +#define IEEE80211_ASSOC_TIMEOUT (HZ / 5) +#define IEEE80211_ASSOC_MAX_TRIES 3 + static int max_nullfunc_tries = 2; module_param(max_nullfunc_tries, int, 0644); MODULE_PARM_DESC(max_nullfunc_tries, @@ -82,6 +88,8 @@ MODULE_PARM_DESC(probe_wait_ms, #define TMR_RUNNING_TIMER 0 #define TMR_RUNNING_CHANSW 1 +#define DEAUTH_DISASSOC_LEN (24 /* hdr */ + 2 /* reason */) + /* * All cfg80211 functions have to be called outside a locked * section so that they can acquire a lock themselves... This @@ -97,6 +105,15 @@ enum rx_mgmt_action { /* caller must call cfg80211_send_disassoc() */ RX_MGMT_CFG80211_DISASSOC, + + /* caller must call cfg80211_send_rx_auth() */ + RX_MGMT_CFG80211_RX_AUTH, + + /* caller must call cfg80211_send_rx_assoc() */ + RX_MGMT_CFG80211_RX_ASSOC, + + /* caller must call cfg80211_send_assoc_timeout() */ + RX_MGMT_CFG80211_ASSOC_TIMEOUT, }; /* utils */ @@ -115,8 +132,7 @@ static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd) * has happened -- the work that runs from this timer will * do that. */ -static void run_again(struct ieee80211_if_managed *ifmgd, - unsigned long timeout) +static void run_again(struct ieee80211_if_managed *ifmgd, unsigned long timeout) { ASSERT_MGD_MTX(ifmgd); @@ -127,7 +143,7 @@ static void run_again(struct ieee80211_if_managed *ifmgd, void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) { - if (sdata->local->hw.flags & IEEE80211_HW_BEACON_FILTER) + if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) return; mod_timer(&sdata->u.mgd.bcn_mon_timer, @@ -173,40 +189,35 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, u16 ht_opmode; bool enable_ht = true; enum nl80211_channel_type prev_chantype; - enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; + enum nl80211_channel_type rx_channel_type = NL80211_CHAN_NO_HT; + enum nl80211_channel_type tx_channel_type; sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; - prev_chantype = sdata->vif.bss_conf.channel_type; - /* HT is not supported */ - if (!sband->ht_cap.ht_supported) - enable_ht = false; - if (enable_ht) { - hti_cfreq = ieee80211_channel_to_frequency(hti->control_chan, - sband->band); - /* check that channel matches the right operating channel */ - if (local->hw.conf.channel->center_freq != hti_cfreq) { - /* Some APs mess this up, evidently. - * Netgear WNDR3700 sometimes reports 4 higher than - * the actual channel, for instance. - */ - printk(KERN_DEBUG - "%s: Wrong control channel in association" - " response: configured center-freq: %d" - " hti-cfreq: %d hti->control_chan: %d" - " band: %d. Disabling HT.\n", - sdata->name, - local->hw.conf.channel->center_freq, - hti_cfreq, hti->control_chan, - sband->band); - enable_ht = false; - } + hti_cfreq = ieee80211_channel_to_frequency(hti->control_chan, + sband->band); + /* check that channel matches the right operating channel */ + if (local->hw.conf.channel->center_freq != hti_cfreq) { + /* Some APs mess this up, evidently. + * Netgear WNDR3700 sometimes reports 4 higher than + * the actual channel, for instance. + */ + printk(KERN_DEBUG + "%s: Wrong control channel in association" + " response: configured center-freq: %d" + " hti-cfreq: %d hti->control_chan: %d" + " band: %d. Disabling HT.\n", + sdata->name, + local->hw.conf.channel->center_freq, + hti_cfreq, hti->control_chan, + sband->band); + enable_ht = false; } if (enable_ht) { - channel_type = NL80211_CHAN_HT20; + rx_channel_type = NL80211_CHAN_HT20; if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) && !ieee80111_cfg_override_disables_ht40(sdata) && @@ -214,29 +225,28 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) { switch(hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: - if (!(local->hw.conf.channel->flags & - IEEE80211_CHAN_NO_HT40PLUS)) - channel_type = NL80211_CHAN_HT40PLUS; + rx_channel_type = NL80211_CHAN_HT40PLUS; break; case IEEE80211_HT_PARAM_CHA_SEC_BELOW: - if (!(local->hw.conf.channel->flags & - IEEE80211_CHAN_NO_HT40MINUS)) - channel_type = NL80211_CHAN_HT40MINUS; + rx_channel_type = NL80211_CHAN_HT40MINUS; break; } } } + tx_channel_type = ieee80211_get_tx_channel_type(local, rx_channel_type); + if (local->tmp_channel) - local->tmp_channel_type = channel_type; + local->tmp_channel_type = rx_channel_type; - if (!ieee80211_set_channel_type(local, sdata, channel_type)) { + if (!ieee80211_set_channel_type(local, sdata, rx_channel_type)) { /* can only fail due to HT40+/- mismatch */ - channel_type = NL80211_CHAN_HT20; - WARN_ON(!ieee80211_set_channel_type(local, sdata, channel_type)); + rx_channel_type = NL80211_CHAN_HT20; + WARN_ON(!ieee80211_set_channel_type(local, sdata, + rx_channel_type)); } - if (beacon_htcap_ie && (prev_chantype != channel_type)) { + if (beacon_htcap_ie && (prev_chantype != rx_channel_type)) { /* * Whenever the AP announces the HT mode change that can be * 40MHz intolerant or etc., it would be safer to stop tx @@ -254,13 +264,13 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, /* channel_type change automatically detected */ ieee80211_hw_config(local, 0); - if (prev_chantype != channel_type) { + if (prev_chantype != tx_channel_type) { rcu_read_lock(); sta = sta_info_get(sdata, bssid); if (sta) rate_control_rate_update(local, sband, sta, IEEE80211_RC_HT_CHANGED, - channel_type); + tx_channel_type); rcu_read_unlock(); if (beacon_htcap_ie) @@ -273,7 +283,7 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, /* if bss configuration changed store the new one */ if (sdata->ht_opmode_valid != enable_ht || sdata->vif.bss_conf.ht_operation_mode != ht_opmode || - prev_chantype != channel_type) { + prev_chantype != rx_channel_type) { changed |= BSS_CHANGED_HT; sdata->vif.bss_conf.ht_operation_mode = ht_opmode; sdata->ht_opmode_valid = enable_ht; @@ -284,48 +294,351 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, /* frame sending functions */ -static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, - const u8 *bssid, u16 stype, u16 reason, - void *cookie, bool send_frame) +static int ieee80211_compatible_rates(const u8 *supp_rates, int supp_rates_len, + struct ieee80211_supported_band *sband, + u32 *rates) +{ + int i, j, count; + *rates = 0; + count = 0; + for (i = 0; i < supp_rates_len; i++) { + int rate = (supp_rates[i] & 0x7F) * 5; + + for (j = 0; j < sband->n_bitrates; j++) + if (sband->bitrates[j].bitrate == rate) { + *rates |= BIT(j); + count++; + break; + } + } + + return count; +} + +static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb, const u8 *ht_info_ie, + struct ieee80211_supported_band *sband, + struct ieee80211_channel *channel, + enum ieee80211_smps_mode smps) +{ + struct ieee80211_ht_info *ht_info; + u8 *pos; + u32 flags = channel->flags; + u16 cap; + struct ieee80211_sta_ht_cap ht_cap; + + BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); + + if (!ht_info_ie) + return; + + if (ht_info_ie[1] < sizeof(struct ieee80211_ht_info)) + return; + + memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); + ieee80211_apply_htcap_overrides(sdata, &ht_cap); + + ht_info = (struct ieee80211_ht_info *)(ht_info_ie + 2); + + /* determine capability flags */ + cap = ht_cap.cap; + + switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { + case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: + if (flags & IEEE80211_CHAN_NO_HT40PLUS) { + cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; + cap &= ~IEEE80211_HT_CAP_SGI_40; + } + break; + case IEEE80211_HT_PARAM_CHA_SEC_BELOW: + if (flags & IEEE80211_CHAN_NO_HT40MINUS) { + cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; + cap &= ~IEEE80211_HT_CAP_SGI_40; + } + break; + } + + /* set SM PS mode properly */ + cap &= ~IEEE80211_HT_CAP_SM_PS; + switch (smps) { + case IEEE80211_SMPS_AUTOMATIC: + case IEEE80211_SMPS_NUM_MODES: + WARN_ON(1); + case IEEE80211_SMPS_OFF: + cap |= WLAN_HT_CAP_SM_PS_DISABLED << + IEEE80211_HT_CAP_SM_PS_SHIFT; + break; + case IEEE80211_SMPS_STATIC: + cap |= WLAN_HT_CAP_SM_PS_STATIC << + IEEE80211_HT_CAP_SM_PS_SHIFT; + break; + case IEEE80211_SMPS_DYNAMIC: + cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << + IEEE80211_HT_CAP_SM_PS_SHIFT; + break; + } + + /* reserve and fill IE */ + pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); + ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); +} + +static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) { struct ieee80211_local *local = sdata->local; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; + u8 *pos, qos_info; + size_t offset = 0, noffset; + int i, count, rates_len, supp_rates_len; + u16 capab; + struct ieee80211_supported_band *sband; + u32 rates = 0; + + lockdep_assert_held(&ifmgd->mtx); + + sband = local->hw.wiphy->bands[local->oper_channel->band]; - skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); + if (assoc_data->supp_rates_len) { + /* + * Get all rates supported by the device and the AP as + * some APs don't like getting a superset of their rates + * in the association request (e.g. D-Link DAP 1353 in + * b-only mode)... + */ + rates_len = ieee80211_compatible_rates(assoc_data->supp_rates, + assoc_data->supp_rates_len, + sband, &rates); + } else { + /* + * In case AP not provide any supported rates information + * before association, we send information element(s) with + * all rates that we support. + */ + rates = ~0; + rates_len = sband->n_bitrates; + } + + skb = alloc_skb(local->hw.extra_tx_headroom + + sizeof(*mgmt) + /* bit too much but doesn't matter */ + 2 + assoc_data->ssid_len + /* SSID */ + 4 + rates_len + /* (extended) rates */ + 4 + /* power capability */ + 2 + 2 * sband->n_channels + /* supported channels */ + 2 + sizeof(struct ieee80211_ht_cap) + /* HT */ + assoc_data->ie_len + /* extra IEs */ + 9, /* WMM */ + GFP_KERNEL); if (!skb) return; skb_reserve(skb, local->hw.extra_tx_headroom); + capab = WLAN_CAPABILITY_ESS; + + if (sband->band == IEEE80211_BAND_2GHZ) { + 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; + } + + if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY) + capab |= WLAN_CAPABILITY_PRIVACY; + + if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && + (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) + capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; + mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); memset(mgmt, 0, 24); + memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN); + memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); + memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN); + + if (!is_zero_ether_addr(assoc_data->prev_bssid)) { + skb_put(skb, 10); + mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | + IEEE80211_STYPE_REASSOC_REQ); + mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); + mgmt->u.reassoc_req.listen_interval = + cpu_to_le16(local->hw.conf.listen_interval); + memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid, + ETH_ALEN); + } else { + skb_put(skb, 4); + mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | + IEEE80211_STYPE_ASSOC_REQ); + mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); + mgmt->u.assoc_req.listen_interval = + cpu_to_le16(local->hw.conf.listen_interval); + } + + /* SSID */ + pos = skb_put(skb, 2 + assoc_data->ssid_len); + *pos++ = WLAN_EID_SSID; + *pos++ = assoc_data->ssid_len; + memcpy(pos, assoc_data->ssid, assoc_data->ssid_len); + + /* add all rates which were marked to be used above */ + supp_rates_len = rates_len; + if (supp_rates_len > 8) + supp_rates_len = 8; + + pos = skb_put(skb, supp_rates_len + 2); + *pos++ = WLAN_EID_SUPP_RATES; + *pos++ = supp_rates_len; + + count = 0; + for (i = 0; i < sband->n_bitrates; i++) { + if (BIT(i) & rates) { + int rate = sband->bitrates[i].bitrate; + *pos++ = (u8) (rate / 5); + if (++count == 8) + break; + } + } + + if (rates_len > count) { + pos = skb_put(skb, rates_len - count + 2); + *pos++ = WLAN_EID_EXT_SUPP_RATES; + *pos++ = rates_len - count; + + for (i++; i < sband->n_bitrates; i++) { + if (BIT(i) & rates) { + int rate = sband->bitrates[i].bitrate; + *pos++ = (u8) (rate / 5); + } + } + } + + if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { + /* 1. power capabilities */ + pos = skb_put(skb, 4); + *pos++ = WLAN_EID_PWR_CAPABILITY; + *pos++ = 2; + *pos++ = 0; /* min tx power */ + *pos++ = local->oper_channel->max_power; /* max tx power */ + + /* 2. supported channels */ + /* TODO: get this in reg domain format */ + pos = skb_put(skb, 2 * sband->n_channels + 2); + *pos++ = WLAN_EID_SUPPORTED_CHANNELS; + *pos++ = 2 * sband->n_channels; + for (i = 0; i < sband->n_channels; i++) { + *pos++ = ieee80211_frequency_to_channel( + sband->channels[i].center_freq); + *pos++ = 1; /* one channel in the subband*/ + } + } + + /* if present, add any custom IEs that go before HT */ + if (assoc_data->ie_len && assoc_data->ie) { + static const u8 before_ht[] = { + WLAN_EID_SSID, + WLAN_EID_SUPP_RATES, + WLAN_EID_EXT_SUPP_RATES, + WLAN_EID_PWR_CAPABILITY, + WLAN_EID_SUPPORTED_CHANNELS, + WLAN_EID_RSN, + WLAN_EID_QOS_CAPA, + WLAN_EID_RRM_ENABLED_CAPABILITIES, + WLAN_EID_MOBILITY_DOMAIN, + WLAN_EID_SUPPORTED_REGULATORY_CLASSES, + }; + noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, + before_ht, ARRAY_SIZE(before_ht), + offset); + pos = skb_put(skb, noffset - offset); + memcpy(pos, assoc_data->ie + offset, noffset - offset); + offset = noffset; + } + + if (!(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) + ieee80211_add_ht_ie(sdata, skb, assoc_data->ht_information_ie, + sband, local->oper_channel, ifmgd->ap_smps); + + /* if present, add any custom non-vendor IEs that go after HT */ + if (assoc_data->ie_len && assoc_data->ie) { + noffset = ieee80211_ie_split_vendor(assoc_data->ie, + assoc_data->ie_len, + offset); + pos = skb_put(skb, noffset - offset); + memcpy(pos, assoc_data->ie + offset, noffset - offset); + offset = noffset; + } + + if (assoc_data->wmm) { + if (assoc_data->uapsd) { + qos_info = ifmgd->uapsd_queues; + qos_info |= (ifmgd->uapsd_max_sp_len << + IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); + } else { + qos_info = 0; + } + + pos = skb_put(skb, 9); + *pos++ = WLAN_EID_VENDOR_SPECIFIC; + *pos++ = 7; /* len */ + *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ + *pos++ = 0x50; + *pos++ = 0xf2; + *pos++ = 2; /* WME */ + *pos++ = 0; /* WME info */ + *pos++ = 1; /* WME ver */ + *pos++ = qos_info; + } + + /* add any remaining custom (i.e. vendor specific here) IEs */ + if (assoc_data->ie_len && assoc_data->ie) { + noffset = assoc_data->ie_len; + pos = skb_put(skb, noffset - offset); + memcpy(pos, assoc_data->ie + offset, noffset - offset); + } + + IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; + ieee80211_tx_skb(sdata, skb); +} + +static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, + const u8 *bssid, u16 stype, + u16 reason, bool send_frame, + u8 *frame_buf) +{ + struct ieee80211_local *local = sdata->local; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + struct sk_buff *skb; + struct ieee80211_mgmt *mgmt = (void *)frame_buf; + + /* build frame */ + mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); + mgmt->duration = 0; /* initialize only */ + mgmt->seq_ctrl = 0; /* initialize only */ memcpy(mgmt->da, bssid, ETH_ALEN); memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); memcpy(mgmt->bssid, bssid, ETH_ALEN); - mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); - skb_put(skb, 2); /* u.deauth.reason_code == u.disassoc.reason_code */ mgmt->u.deauth.reason_code = cpu_to_le16(reason); - if (stype == IEEE80211_STYPE_DEAUTH) - if (cookie) - __cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); - else - cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); - else - if (cookie) - __cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len); - else - cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len); - if (!(ifmgd->flags & IEEE80211_STA_MFP_ENABLED)) - IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; + if (send_frame) { + skb = dev_alloc_skb(local->hw.extra_tx_headroom + + DEAUTH_DISASSOC_LEN); + if (!skb) + return; - if (send_frame) + skb_reserve(skb, local->hw.extra_tx_headroom); + + /* copy in frame */ + memcpy(skb_put(skb, DEAUTH_DISASSOC_LEN), + mgmt, DEAUTH_DISASSOC_LEN); + + if (!(ifmgd->flags & IEEE80211_STA_MFP_ENABLED)) + IEEE80211_SKB_CB(skb)->flags |= + IEEE80211_TX_INTFL_DONT_ENCRYPT; ieee80211_tx_skb(sdata, skb); - else - kfree_skb(skb); + } } void ieee80211_send_pspoll(struct ieee80211_local *local, @@ -547,7 +860,7 @@ static void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, if (pwr_constr_elem_len != 1) return; - if ((*pwr_constr_elem <= conf->channel->max_power) && + if ((*pwr_constr_elem <= conf->channel->max_reg_power) && (*pwr_constr_elem != sdata->local->power_constr_level)) { sdata->local->power_constr_level = *pwr_constr_elem; ieee80211_hw_config(sdata->local, 0); @@ -879,7 +1192,7 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, return; if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) - uapsd_queues = local->uapsd_queues; + uapsd_queues = ifmgd->uapsd_queues; count = wmm_param[6] & 0x0f; if (count == ifmgd->wmm_last_param_set) @@ -953,7 +1266,6 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, /* enable WMM or activate new settings */ sdata->vif.bss_conf.qos = true; - ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); } static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, @@ -1006,7 +1318,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, bss_info_changed |= BSS_CHANGED_ASSOC; /* set timing information */ bss_conf->beacon_int = cbss->beacon_interval; - bss_conf->timestamp = cbss->tsf; + bss_conf->last_tsf = cbss->tsf; bss_info_changed |= BSS_CHANGED_BEACON_INT; bss_info_changed |= ieee80211_handle_bss_capability(sdata, @@ -1032,18 +1344,9 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, bss_conf->dtim_period = 0; bss_conf->assoc = 1; - /* - * For now just always ask the driver to update the basic rateset - * when we have associated, we aren't checking whether it actually - * changed or not. - */ - bss_info_changed |= BSS_CHANGED_BASIC_RATES; - - /* And the BSSID changed - we're associated now */ - bss_info_changed |= BSS_CHANGED_BSSID; /* Tell the driver to monitor connection quality (if supported) */ - if ((local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI) && + if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI && bss_conf->cqm_rssi_thold) bss_info_changed |= BSS_CHANGED_CQM; @@ -1065,16 +1368,20 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, } static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, - bool remove_sta, bool tx) + u16 stype, u16 reason, bool tx, + u8 *frame_buf) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; struct sta_info *sta; - u32 changed = 0, config_changed = 0; + u32 changed = 0; u8 bssid[ETH_ALEN]; ASSERT_MGD_MTX(ifmgd); + if (WARN_ON_ONCE(tx && !frame_buf)) + return; + if (WARN_ON(!ifmgd->associated)) return; @@ -1108,17 +1415,25 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, } mutex_unlock(&local->sta_mtx); + /* deauthenticate/disassociate now */ + if (tx || frame_buf) + ieee80211_send_deauth_disassoc(sdata, bssid, stype, reason, + tx, frame_buf); + + /* flush out frame */ + if (tx) + drv_flush(local, false); + + /* remove AP and TDLS peers */ + sta_info_flush(local, sdata); + + /* finally reset all BSS / config parameters */ changed |= ieee80211_reset_erp_info(sdata); ieee80211_led_assoc(local, 0); changed |= BSS_CHANGED_ASSOC; sdata->vif.bss_conf.assoc = false; - ieee80211_set_wmm_default(sdata); - - /* channel(_type) changes are handled by ieee80211_hw_config */ - WARN_ON(!ieee80211_set_channel_type(local, sdata, NL80211_CHAN_NO_HT)); - /* on the next assoc, re-program HT parameters */ sdata->ht_opmode_valid = false; memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa)); @@ -1131,25 +1446,29 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, if (local->hw.conf.flags & IEEE80211_CONF_PS) { local->hw.conf.flags &= ~IEEE80211_CONF_PS; - config_changed |= IEEE80211_CONF_CHANGE_PS; + ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); } local->ps_sdata = NULL; - ieee80211_hw_config(local, config_changed); - /* Disable ARP filtering */ if (sdata->vif.bss_conf.arp_filter_enabled) { sdata->vif.bss_conf.arp_filter_enabled = false; changed |= BSS_CHANGED_ARP_FILTER; } + sdata->vif.bss_conf.qos = false; + changed |= BSS_CHANGED_QOS; + /* The BSSID (not really interesting) and HT changed */ changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; ieee80211_bss_info_change_notify(sdata, changed); - /* remove AP and TDLS peers */ - if (remove_sta) - sta_info_flush(local, sdata); + /* channel(_type) changes are handled by ieee80211_hw_config */ + WARN_ON(!ieee80211_set_channel_type(local, sdata, NL80211_CHAN_NO_HT)); + ieee80211_hw_config(local, 0); + + /* disassociated - set to defaults now */ + ieee80211_set_wmm_default(sdata, false); del_timer_sync(&sdata->u.mgd.conn_mon_timer); del_timer_sync(&sdata->u.mgd.bcn_mon_timer); @@ -1347,6 +1666,7 @@ static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata) struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; u8 bssid[ETH_ALEN]; + u8 frame_buf[DEAUTH_DISASSOC_LEN]; mutex_lock(&ifmgd->mtx); if (!ifmgd->associated) { @@ -1359,17 +1679,16 @@ static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata) printk(KERN_DEBUG "%s: Connection to AP %pM lost.\n", sdata->name, bssid); - ieee80211_set_disassoc(sdata, true, true); + ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, + WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, + false, frame_buf); mutex_unlock(&ifmgd->mtx); /* * must be outside lock due to cfg80211, * but that's not a problem. */ - ieee80211_send_deauth_disassoc(sdata, bssid, - IEEE80211_STYPE_DEAUTH, - WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, - NULL, true); + cfg80211_send_deauth(sdata->dev, frame_buf, DEAUTH_DISASSOC_LEN); mutex_lock(&local->mtx); ieee80211_recalc_idle(local); @@ -1423,6 +1742,126 @@ void ieee80211_connection_loss(struct ieee80211_vif *vif) EXPORT_SYMBOL(ieee80211_connection_loss); +static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, + bool assoc) +{ + struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; + + lockdep_assert_held(&sdata->u.mgd.mtx); + + if (!assoc) { + sta_info_destroy_addr(sdata, auth_data->bss->bssid); + + memset(sdata->u.mgd.bssid, 0, ETH_ALEN); + ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); + } + + cfg80211_put_bss(auth_data->bss); + kfree(auth_data); + sdata->u.mgd.auth_data = NULL; +} + +static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, + struct ieee80211_mgmt *mgmt, size_t len) +{ + struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; + u8 *pos; + struct ieee802_11_elems elems; + + pos = mgmt->u.auth.variable; + ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); + if (!elems.challenge) + return; + auth_data->expected_transaction = 4; + ieee80211_send_auth(sdata, 3, auth_data->algorithm, + elems.challenge - 2, elems.challenge_len + 2, + auth_data->bss->bssid, auth_data->bss->bssid, + auth_data->key, auth_data->key_len, + auth_data->key_idx); +} + +static enum rx_mgmt_action __must_check +ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, + struct ieee80211_mgmt *mgmt, size_t len) +{ + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + u8 bssid[ETH_ALEN]; + u16 auth_alg, auth_transaction, status_code; + struct sta_info *sta; + + lockdep_assert_held(&ifmgd->mtx); + + if (len < 24 + 6) + return RX_MGMT_NONE; + + if (!ifmgd->auth_data || ifmgd->auth_data->done) + return RX_MGMT_NONE; + + memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); + + if (compare_ether_addr(bssid, mgmt->bssid)) + return RX_MGMT_NONE; + + auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); + auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); + status_code = le16_to_cpu(mgmt->u.auth.status_code); + + if (auth_alg != ifmgd->auth_data->algorithm || + auth_transaction != ifmgd->auth_data->expected_transaction) + return RX_MGMT_NONE; + + if (status_code != WLAN_STATUS_SUCCESS) { + printk(KERN_DEBUG "%s: %pM denied authentication (status %d)\n", + sdata->name, mgmt->sa, status_code); + goto out; + } + + switch (ifmgd->auth_data->algorithm) { + case WLAN_AUTH_OPEN: + case WLAN_AUTH_LEAP: + case WLAN_AUTH_FT: + break; + case WLAN_AUTH_SHARED_KEY: + if (ifmgd->auth_data->expected_transaction != 4) { + ieee80211_auth_challenge(sdata, mgmt, len); + /* need another frame */ + return RX_MGMT_NONE; + } + break; + default: + WARN_ONCE(1, "invalid auth alg %d", + ifmgd->auth_data->algorithm); + return RX_MGMT_NONE; + } + + printk(KERN_DEBUG "%s: authenticated\n", sdata->name); + out: + ifmgd->auth_data->done = true; + ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; + run_again(ifmgd, ifmgd->auth_data->timeout); + + /* move station state to auth */ + mutex_lock(&sdata->local->sta_mtx); + sta = sta_info_get(sdata, bssid); + if (!sta) { + WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid); + goto out_err; + } + if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) { + printk(KERN_DEBUG "%s: failed moving %pM to auth\n", + sdata->name, bssid); + goto out_err; + } + mutex_unlock(&sdata->local->sta_mtx); + + return RX_MGMT_CFG80211_RX_AUTH; + out_err: + mutex_unlock(&sdata->local->sta_mtx); + /* ignore frame -- wait for timeout */ + return RX_MGMT_NONE; +} + + static enum rx_mgmt_action __must_check ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, size_t len) @@ -1431,10 +1870,14 @@ ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, const u8 *bssid = NULL; u16 reason_code; + lockdep_assert_held(&ifmgd->mtx); + if (len < 24 + 2) return RX_MGMT_NONE; - ASSERT_MGD_MTX(ifmgd); + if (!ifmgd->associated || + compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid)) + return RX_MGMT_NONE; bssid = ifmgd->associated->bssid; @@ -1443,7 +1886,8 @@ ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, printk(KERN_DEBUG "%s: deauthenticated from %pM (Reason: %u)\n", sdata->name, bssid, reason_code); - ieee80211_set_disassoc(sdata, true, false); + ieee80211_set_disassoc(sdata, 0, 0, false, NULL); + mutex_lock(&sdata->local->mtx); ieee80211_recalc_idle(sdata->local); mutex_unlock(&sdata->local->mtx); @@ -1459,15 +1903,13 @@ ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; u16 reason_code; - if (len < 24 + 2) - return RX_MGMT_NONE; - - ASSERT_MGD_MTX(ifmgd); + lockdep_assert_held(&ifmgd->mtx); - if (WARN_ON(!ifmgd->associated)) + if (len < 24 + 2) return RX_MGMT_NONE; - if (WARN_ON(memcmp(ifmgd->associated->bssid, mgmt->sa, ETH_ALEN))) + if (!ifmgd->associated || + compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid)) return RX_MGMT_NONE; reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); @@ -1475,10 +1917,12 @@ ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, printk(KERN_DEBUG "%s: disassociated from %pM (Reason: %u)\n", sdata->name, mgmt->sa, reason_code); - ieee80211_set_disassoc(sdata, true, false); + ieee80211_set_disassoc(sdata, 0, 0, false, NULL); + mutex_lock(&sdata->local->mtx); ieee80211_recalc_idle(sdata->local); mutex_unlock(&sdata->local->mtx); + return RX_MGMT_CFG80211_DISASSOC; } @@ -1524,25 +1968,39 @@ static void ieee80211_get_rates(struct ieee80211_supported_band *sband, } } -static bool ieee80211_assoc_success(struct ieee80211_work *wk, +static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, + bool assoc) +{ + struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; + + lockdep_assert_held(&sdata->u.mgd.mtx); + + if (!assoc) { + sta_info_destroy_addr(sdata, assoc_data->bss->bssid); + + memset(sdata->u.mgd.bssid, 0, ETH_ALEN); + ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); + } + + kfree(assoc_data); + sdata->u.mgd.assoc_data = NULL; +} + +static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, + struct cfg80211_bss *cbss, struct ieee80211_mgmt *mgmt, size_t len) { - struct ieee80211_sub_if_data *sdata = wk->sdata; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; struct ieee80211_supported_band *sband; struct sta_info *sta; - struct cfg80211_bss *cbss = wk->assoc.bss; u8 *pos; - u32 rates, basic_rates; u16 capab_info, aid; struct ieee802_11_elems elems; struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; u32 changed = 0; int err; - bool have_higher_than_11mbit = false; u16 ap_ht_cap_flags; - int min_rate = INT_MAX, min_rate_index = -1; /* AssocResp and ReassocResp have identical structure */ @@ -1581,49 +2039,13 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk, * station info was already allocated and inserted before * the association and should be available to us */ - sta = sta_info_get_rx(sdata, cbss->bssid); + sta = sta_info_get(sdata, cbss->bssid); if (WARN_ON(!sta)) { mutex_unlock(&sdata->local->sta_mtx); return false; } - sta_info_move_state(sta, IEEE80211_STA_AUTH); - sta_info_move_state(sta, IEEE80211_STA_ASSOC); - if (!(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) - sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); - - rates = 0; - basic_rates = 0; - sband = local->hw.wiphy->bands[wk->chan->band]; - - ieee80211_get_rates(sband, elems.supp_rates, elems.supp_rates_len, - &rates, &basic_rates, &have_higher_than_11mbit, - &min_rate, &min_rate_index); - - ieee80211_get_rates(sband, elems.ext_supp_rates, - elems.ext_supp_rates_len, &rates, &basic_rates, - &have_higher_than_11mbit, - &min_rate, &min_rate_index); - - /* - * some buggy APs don't advertise basic_rates. use the lowest - * supported rate instead. - */ - if (unlikely(!basic_rates) && min_rate_index >= 0) { - printk(KERN_DEBUG "%s: No basic rates in AssocResp. " - "Using min supported rate instead.\n", sdata->name); - basic_rates = BIT(min_rate_index); - } - - sta->sta.supp_rates[wk->chan->band] = rates; - sdata->vif.bss_conf.basic_rates = basic_rates; - - /* cf. IEEE 802.11 9.2.12 */ - if (wk->chan->band == IEEE80211_BAND_2GHZ && - have_higher_than_11mbit) - sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; - else - sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; + sband = local->hw.wiphy->bands[local->oper_channel->band]; if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, @@ -1639,15 +2061,22 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk, if (elems.wmm_param) set_sta_flag(sta, WLAN_STA_WME); - /* sta_info_reinsert will also unlock the mutex lock */ - err = sta_info_reinsert(sta); - sta = NULL; + err = sta_info_move_state(sta, IEEE80211_STA_AUTH); + if (!err) + err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); + if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) + err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); if (err) { - printk(KERN_DEBUG "%s: failed to insert STA entry for" - " the AP (error %d)\n", sdata->name, err); + printk(KERN_DEBUG + "%s: failed to move station %pM to desired state\n", + sdata->name, sta->sta.addr); + WARN_ON(__sta_info_destroy(sta)); + mutex_unlock(&sdata->local->sta_mtx); return false; } + mutex_unlock(&sdata->local->sta_mtx); + /* * Always handle WMM once after association regardless * of the first value the AP uses. Setting -1 here has @@ -1660,12 +2089,10 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk, ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, elems.wmm_param_len); else - ieee80211_set_wmm_default(sdata); - - local->oper_channel = wk->chan; + ieee80211_set_wmm_default(sdata, false); + changed |= BSS_CHANGED_QOS; if (elems.ht_info_elem && elems.wmm_param && - (sdata->local->hw.queues >= 4) && !(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, cbss->bssid, ap_ht_cap_flags, @@ -1694,7 +2121,88 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk, return true; } +static enum rx_mgmt_action __must_check +ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, + struct ieee80211_mgmt *mgmt, size_t len, + struct cfg80211_bss **bss) +{ + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; + u16 capab_info, status_code, aid; + struct ieee802_11_elems elems; + u8 *pos; + bool reassoc; + + lockdep_assert_held(&ifmgd->mtx); + if (!assoc_data) + return RX_MGMT_NONE; + if (compare_ether_addr(assoc_data->bss->bssid, mgmt->bssid)) + return RX_MGMT_NONE; + + /* + * AssocResp and ReassocResp have identical structure, so process both + * of them in this function. + */ + + if (len < 24 + 6) + return RX_MGMT_NONE; + + reassoc = ieee80211_is_reassoc_req(mgmt->frame_control); + capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); + status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); + aid = le16_to_cpu(mgmt->u.assoc_resp.aid); + + printk(KERN_DEBUG "%s: RX %sssocResp from %pM (capab=0x%x " + "status=%d aid=%d)\n", + sdata->name, reassoc ? "Rea" : "A", mgmt->sa, + capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); + + pos = mgmt->u.assoc_resp.variable; + ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); + + if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && + elems.timeout_int && elems.timeout_int_len == 5 && + elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) { + u32 tu, ms; + tu = get_unaligned_le32(elems.timeout_int + 1); + ms = tu * 1024 / 1000; + printk(KERN_DEBUG "%s: %pM rejected association temporarily; " + "comeback duration %u TU (%u ms)\n", + sdata->name, mgmt->sa, tu, ms); + assoc_data->timeout = jiffies + msecs_to_jiffies(ms); + if (ms > IEEE80211_ASSOC_TIMEOUT) + run_again(ifmgd, assoc_data->timeout); + return RX_MGMT_NONE; + } + + *bss = assoc_data->bss; + + if (status_code != WLAN_STATUS_SUCCESS) { + printk(KERN_DEBUG "%s: %pM denied association (code=%d)\n", + sdata->name, mgmt->sa, status_code); + ieee80211_destroy_assoc_data(sdata, false); + } else { + printk(KERN_DEBUG "%s: associated\n", sdata->name); + + if (!ieee80211_assoc_success(sdata, *bss, mgmt, len)) { + /* oops -- internal error -- send timeout for now */ + ieee80211_destroy_assoc_data(sdata, true); + sta_info_destroy_addr(sdata, mgmt->bssid); + cfg80211_put_bss(*bss); + return RX_MGMT_CFG80211_ASSOC_TIMEOUT; + } + + /* + * destroy assoc_data afterwards, as otherwise an idle + * recalc after assoc_data is NULL but before associated + * is set can cause the interface to go idle + */ + ieee80211_destroy_assoc_data(sdata, true); + } + + return RX_MGMT_CFG80211_RX_ASSOC; +} static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, size_t len, @@ -1708,7 +2216,9 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, struct ieee80211_channel *channel; bool need_ps = false; - if (sdata->u.mgd.associated) { + if (sdata->u.mgd.associated && + compare_ether_addr(mgmt->bssid, sdata->u.mgd.associated->bssid) + == 0) { bss = (void *)sdata->u.mgd.associated->priv; /* not previously set so we may need to recalc */ need_ps = !bss->dtim_period; @@ -1763,7 +2273,7 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, ASSERT_MGD_MTX(ifmgd); - if (memcmp(mgmt->da, sdata->vif.addr, ETH_ALEN)) + if (compare_ether_addr(mgmt->da, sdata->vif.addr)) return; /* ignore ProbeResp to foreign address */ baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; @@ -1776,8 +2286,18 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); if (ifmgd->associated && - memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN) == 0) + compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid) == 0) ieee80211_reset_ap_probe(sdata); + + if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies && + compare_ether_addr(mgmt->bssid, ifmgd->auth_data->bss->bssid) + == 0) { + /* got probe response, continue with auth */ + printk(KERN_DEBUG "%s: direct probe responded\n", sdata->name); + ifmgd->auth_data->tries = 0; + ifmgd->auth_data->timeout = jiffies; + run_again(ifmgd, ifmgd->auth_data->timeout); + } } /* @@ -1817,7 +2337,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, u32 ncrc; u8 *bssid; - ASSERT_MGD_MTX(ifmgd); + lockdep_assert_held(&ifmgd->mtx); /* Process beacon from the current BSS */ baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; @@ -1827,21 +2347,26 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, if (rx_status->freq != local->hw.conf.channel->center_freq) return; - /* - * We might have received a number of frames, among them a - * disassoc frame and a beacon... - */ - if (!ifmgd->associated) - return; + if (ifmgd->assoc_data && !ifmgd->assoc_data->have_beacon && + compare_ether_addr(mgmt->bssid, ifmgd->assoc_data->bss->bssid) + == 0) { + ieee802_11_parse_elems(mgmt->u.beacon.variable, + len - baselen, &elems); - bssid = ifmgd->associated->bssid; + ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, + false); + ifmgd->assoc_data->have_beacon = true; + ifmgd->assoc_data->sent_assoc = false; + /* continue assoc process */ + ifmgd->assoc_data->timeout = jiffies; + run_again(ifmgd, ifmgd->assoc_data->timeout); + return; + } - /* - * And in theory even frames from a different AP we were just - * associated to a split-second ago! - */ - if (memcmp(bssid, mgmt->bssid, ETH_ALEN) != 0) + if (!ifmgd->associated || + compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid)) return; + bssid = ifmgd->associated->bssid; /* Track average RSSI from the Beacon frames of the current AP */ ifmgd->last_beacon_signal = rx_status->signal; @@ -1882,7 +2407,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, if (bss_conf->cqm_rssi_thold && ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && - !(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) { + !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) { int sig = ifmgd->ave_beacon_signal / 16; int last_event = ifmgd->last_cqm_event_signal; int thold = bss_conf->cqm_rssi_thold; @@ -2025,6 +2550,7 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_rx_status *rx_status; struct ieee80211_mgmt *mgmt; + struct cfg80211_bss *bss = NULL; enum rx_mgmt_action rma = RX_MGMT_NONE; u16 fc; @@ -2034,92 +2560,59 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, mutex_lock(&ifmgd->mtx); - if (ifmgd->associated && - memcmp(ifmgd->associated->bssid, mgmt->bssid, ETH_ALEN) == 0) { - switch (fc & IEEE80211_FCTL_STYPE) { - case IEEE80211_STYPE_BEACON: - ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, - rx_status); - break; - case IEEE80211_STYPE_PROBE_RESP: - ieee80211_rx_mgmt_probe_resp(sdata, skb); - break; - case IEEE80211_STYPE_DEAUTH: - rma = ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); - break; - case IEEE80211_STYPE_DISASSOC: - rma = ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); - break; - case IEEE80211_STYPE_ACTION: - switch (mgmt->u.action.category) { - case WLAN_CATEGORY_SPECTRUM_MGMT: - ieee80211_sta_process_chanswitch(sdata, - &mgmt->u.action.u.chan_switch.sw_elem, - (void *)ifmgd->associated->priv, - rx_status->mactime); - break; - } - } - mutex_unlock(&ifmgd->mtx); - - switch (rma) { - case RX_MGMT_NONE: - /* no action */ - break; - case RX_MGMT_CFG80211_DEAUTH: - cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); - break; - case RX_MGMT_CFG80211_DISASSOC: - cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len); + switch (fc & IEEE80211_FCTL_STYPE) { + case IEEE80211_STYPE_BEACON: + ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); + break; + case IEEE80211_STYPE_PROBE_RESP: + ieee80211_rx_mgmt_probe_resp(sdata, skb); + break; + case IEEE80211_STYPE_AUTH: + rma = ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); + break; + case IEEE80211_STYPE_DEAUTH: + rma = ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); + break; + case IEEE80211_STYPE_DISASSOC: + rma = ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); + break; + case IEEE80211_STYPE_ASSOC_RESP: + case IEEE80211_STYPE_REASSOC_RESP: + rma = ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, &bss); + break; + case IEEE80211_STYPE_ACTION: + switch (mgmt->u.action.category) { + case WLAN_CATEGORY_SPECTRUM_MGMT: + ieee80211_sta_process_chanswitch(sdata, + &mgmt->u.action.u.chan_switch.sw_elem, + (void *)ifmgd->associated->priv, + rx_status->mactime); break; - default: - WARN(1, "unexpected: %d", rma); } - return; } - mutex_unlock(&ifmgd->mtx); - if (skb->len >= 24 + 2 /* mgmt + deauth reason */ && - (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_DEAUTH) { - struct ieee80211_local *local = sdata->local; - struct ieee80211_work *wk; - - mutex_lock(&local->mtx); - list_for_each_entry(wk, &local->work_list, list) { - if (wk->sdata != sdata) - continue; - - if (wk->type != IEEE80211_WORK_ASSOC && - wk->type != IEEE80211_WORK_ASSOC_BEACON_WAIT) - continue; - - if (memcmp(mgmt->bssid, wk->filter_ta, ETH_ALEN)) - continue; - if (memcmp(mgmt->sa, wk->filter_ta, ETH_ALEN)) - continue; - - /* - * Printing the message only here means we can't - * spuriously print it, but it also means that it - * won't be printed when the frame comes in before - * we even tried to associate or in similar cases. - * - * Ultimately, I suspect cfg80211 should print the - * messages instead. - */ - printk(KERN_DEBUG - "%s: deauthenticated from %pM (Reason: %u)\n", - sdata->name, mgmt->bssid, - le16_to_cpu(mgmt->u.deauth.reason_code)); - - list_del_rcu(&wk->list); - free_work(wk); - break; - } - mutex_unlock(&local->mtx); - + switch (rma) { + case RX_MGMT_NONE: + /* no action */ + break; + case RX_MGMT_CFG80211_DEAUTH: cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); + break; + case RX_MGMT_CFG80211_DISASSOC: + cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len); + break; + case RX_MGMT_CFG80211_RX_AUTH: + cfg80211_send_rx_auth(sdata->dev, (u8 *)mgmt, skb->len); + break; + case RX_MGMT_CFG80211_RX_ASSOC: + cfg80211_send_rx_assoc(sdata->dev, bss, (u8 *)mgmt, skb->len); + break; + case RX_MGMT_CFG80211_ASSOC_TIMEOUT: + cfg80211_send_assoc_timeout(sdata->dev, mgmt->bssid); + break; + default: + WARN(1, "unexpected: %d", rma); } } @@ -2143,19 +2636,20 @@ static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, { struct ieee80211_local *local = sdata->local; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + u8 frame_buf[DEAUTH_DISASSOC_LEN]; ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL | IEEE80211_STA_BEACON_POLL); - ieee80211_set_disassoc(sdata, true, true); + ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, + false, frame_buf); mutex_unlock(&ifmgd->mtx); + /* * must be outside lock due to cfg80211, * but that's not a problem. */ - ieee80211_send_deauth_disassoc(sdata, bssid, - IEEE80211_STYPE_DEAUTH, reason, - NULL, true); + cfg80211_send_deauth(sdata->dev, frame_buf, DEAUTH_DISASSOC_LEN); mutex_lock(&local->mtx); ieee80211_recalc_idle(local); @@ -2164,14 +2658,144 @@ static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, mutex_lock(&ifmgd->mtx); } +static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_local *local = sdata->local; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; + + lockdep_assert_held(&ifmgd->mtx); + + if (WARN_ON_ONCE(!auth_data)) + return -EINVAL; + + auth_data->tries++; + + if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { + printk(KERN_DEBUG "%s: authentication with %pM timed out\n", + sdata->name, auth_data->bss->bssid); + + /* + * Most likely AP is not in the range so remove the + * bss struct for that AP. + */ + cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss); + + return -ETIMEDOUT; + } + + if (auth_data->bss->proberesp_ies) { + printk(KERN_DEBUG "%s: send auth to %pM (try %d/%d)\n", + sdata->name, auth_data->bss->bssid, auth_data->tries, + IEEE80211_AUTH_MAX_TRIES); + + auth_data->expected_transaction = 2; + ieee80211_send_auth(sdata, 1, auth_data->algorithm, + auth_data->ie, auth_data->ie_len, + auth_data->bss->bssid, + auth_data->bss->bssid, NULL, 0, 0); + } else { + const u8 *ssidie; + + printk(KERN_DEBUG "%s: direct probe to %pM (try %d/%i)\n", + sdata->name, auth_data->bss->bssid, auth_data->tries, + IEEE80211_AUTH_MAX_TRIES); + + ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID); + if (!ssidie) + return -EINVAL; + /* + * 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], + NULL, 0, (u32) -1, true, false); + } + + auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; + run_again(ifmgd, auth_data->timeout); + + return 0; +} + +static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; + struct ieee80211_local *local = sdata->local; + + lockdep_assert_held(&sdata->u.mgd.mtx); + + assoc_data->tries++; + if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { + printk(KERN_DEBUG "%s: association with %pM timed out\n", + sdata->name, assoc_data->bss->bssid); + + /* + * Most likely AP is not in the range so remove the + * bss struct for that AP. + */ + cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss); + + return -ETIMEDOUT; + } + + printk(KERN_DEBUG "%s: associate with %pM (try %d/%d)\n", + sdata->name, assoc_data->bss->bssid, assoc_data->tries, + IEEE80211_ASSOC_MAX_TRIES); + ieee80211_send_assoc(sdata); + + assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; + run_again(&sdata->u.mgd, assoc_data->timeout); + + return 0; +} + void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) { struct ieee80211_local *local = sdata->local; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - /* then process the rest of the work */ mutex_lock(&ifmgd->mtx); + if (ifmgd->auth_data && + time_after(jiffies, ifmgd->auth_data->timeout)) { + if (ifmgd->auth_data->done) { + /* + * ok ... we waited for assoc but userspace didn't, + * so let's just kill the auth data + */ + ieee80211_destroy_auth_data(sdata, false); + } else if (ieee80211_probe_auth(sdata)) { + u8 bssid[ETH_ALEN]; + + memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); + + ieee80211_destroy_auth_data(sdata, false); + + mutex_unlock(&ifmgd->mtx); + cfg80211_send_auth_timeout(sdata->dev, bssid); + mutex_lock(&ifmgd->mtx); + } + } else if (ifmgd->auth_data) + run_again(ifmgd, ifmgd->auth_data->timeout); + + if (ifmgd->assoc_data && + time_after(jiffies, ifmgd->assoc_data->timeout)) { + if (!ifmgd->assoc_data->have_beacon || + ieee80211_do_assoc(sdata)) { + u8 bssid[ETH_ALEN]; + + memcpy(bssid, ifmgd->assoc_data->bss->bssid, ETH_ALEN); + + ieee80211_destroy_assoc_data(sdata, false); + + mutex_unlock(&ifmgd->mtx); + cfg80211_send_assoc_timeout(sdata->dev, bssid); + mutex_lock(&ifmgd->mtx); + } + } else if (ifmgd->assoc_data) + run_again(ifmgd, ifmgd->assoc_data->timeout); + if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | IEEE80211_STA_CONNECTION_POLL) && ifmgd->associated) { @@ -2247,6 +2871,10 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) } mutex_unlock(&ifmgd->mtx); + + mutex_lock(&local->mtx); + ieee80211_recalc_idle(local); + mutex_unlock(&local->mtx); } static void ieee80211_sta_bcn_mon_timer(unsigned long data) @@ -2286,13 +2914,17 @@ static void ieee80211_sta_monitor_work(struct work_struct *work) static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) { + u32 flags; + if (sdata->vif.type == NL80211_IFTYPE_STATION) { sdata->u.mgd.flags &= ~(IEEE80211_STA_BEACON_POLL | IEEE80211_STA_CONNECTION_POLL); /* let's probe the connection once */ - ieee80211_queue_work(&sdata->local->hw, - &sdata->u.mgd.monitor_work); + flags = sdata->local->hw.flags; + if (!(flags & IEEE80211_HW_CONNECTION_MONITOR)) + ieee80211_queue_work(&sdata->local->hw, + &sdata->u.mgd.monitor_work); /* and do all the other regular work too */ ieee80211_queue_work(&sdata->local->hw, &sdata->work); } @@ -2356,7 +2988,6 @@ void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) add_timer(&ifmgd->chswitch_timer); ieee80211_sta_reset_beacon_monitor(sdata); ieee80211_restart_sta_timer(sdata); - ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.monitor_work); } #endif @@ -2382,6 +3013,8 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) ifmgd->flags = 0; ifmgd->powersave = sdata->wdev.ps; + ifmgd->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; + ifmgd->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; mutex_init(&ifmgd->mtx); @@ -2418,54 +3051,119 @@ int ieee80211_max_network_latency(struct notifier_block *nb, return 0; } -/* config hooks */ -static enum work_done_result -ieee80211_probe_auth_done(struct ieee80211_work *wk, - struct sk_buff *skb) +static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, + struct cfg80211_bss *cbss, bool assoc) { - struct ieee80211_local *local = wk->sdata->local; + struct ieee80211_local *local = sdata->local; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + struct ieee80211_bss *bss = (void *)cbss->priv; + struct sta_info *sta; + bool have_sta = false; + int err; - if (!skb) { - cfg80211_send_auth_timeout(wk->sdata->dev, wk->filter_ta); - goto destroy; + if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) + return -EINVAL; + + if (assoc) { + rcu_read_lock(); + have_sta = sta_info_get(sdata, cbss->bssid); + rcu_read_unlock(); } - if (wk->type == IEEE80211_WORK_AUTH) { - cfg80211_send_rx_auth(wk->sdata->dev, skb->data, skb->len); - goto destroy; + if (!have_sta) { + sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); + if (!sta) + return -ENOMEM; } - mutex_lock(&wk->sdata->u.mgd.mtx); - ieee80211_rx_mgmt_probe_resp(wk->sdata, skb); - mutex_unlock(&wk->sdata->u.mgd.mtx); + mutex_lock(&local->mtx); + ieee80211_recalc_idle(sdata->local); + mutex_unlock(&local->mtx); + + /* switch to the right channel */ + local->oper_channel = cbss->channel; + ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); + + if (!have_sta) { + struct ieee80211_supported_band *sband; + u32 rates = 0, basic_rates = 0; + bool have_higher_than_11mbit; + int min_rate = INT_MAX, min_rate_index = -1; + + sband = sdata->local->hw.wiphy->bands[cbss->channel->band]; + + ieee80211_get_rates(sband, bss->supp_rates, + bss->supp_rates_len, + &rates, &basic_rates, + &have_higher_than_11mbit, + &min_rate, &min_rate_index); + + /* + * This used to be a workaround for basic rates missing + * in the association response frame. Now that we no + * longer use the basic rates from there, it probably + * doesn't happen any more, but keep the workaround so + * in case some *other* APs are buggy in different ways + * we can connect -- with a warning. + */ + if (!basic_rates && min_rate_index >= 0) { + printk(KERN_DEBUG + "%s: No basic rates, using min rate instead.\n", + sdata->name); + basic_rates = BIT(min_rate_index); + } + + sta->sta.supp_rates[cbss->channel->band] = rates; + sdata->vif.bss_conf.basic_rates = basic_rates; + + /* cf. IEEE 802.11 9.2.12 */ + if (local->oper_channel->band == IEEE80211_BAND_2GHZ && + have_higher_than_11mbit) + sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; + else + sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; - wk->type = IEEE80211_WORK_AUTH; - wk->probe_auth.tries = 0; - return WORK_DONE_REQUEUE; - destroy: - if (wk->probe_auth.synced) - drv_finish_tx_sync(local, wk->sdata, wk->filter_ta, - IEEE80211_TX_SYNC_AUTH); + memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN); - return WORK_DONE_DESTROY; + /* tell driver about BSSID and basic rates */ + ieee80211_bss_info_change_notify(sdata, + BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES); + + if (assoc) + sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); + + err = sta_info_insert(sta); + sta = NULL; + if (err) { + printk(KERN_DEBUG + "%s: failed to insert STA entry for the AP (error %d)\n", + sdata->name, err); + return err; + } + } else + WARN_ON_ONCE(compare_ether_addr(ifmgd->bssid, cbss->bssid)); + + return 0; } +/* config hooks */ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, struct cfg80211_auth_request *req) { - const u8 *ssid; - struct ieee80211_work *wk; + struct ieee80211_local *local = sdata->local; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + struct ieee80211_mgd_auth_data *auth_data; u16 auth_alg; + int err; - if (req->local_state_change) - return 0; /* no need to update mac80211 state */ + /* prepare auth data structure */ switch (req->auth_type) { case NL80211_AUTHTYPE_OPEN_SYSTEM: auth_alg = WLAN_AUTH_OPEN; break; case NL80211_AUTHTYPE_SHARED_KEY: - if (IS_ERR(sdata->local->wep_tx_tfm)) + if (IS_ERR(local->wep_tx_tfm)) return -EOPNOTSUPP; auth_alg = WLAN_AUTH_SHARED_KEY; break; @@ -2479,201 +3177,154 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, return -EOPNOTSUPP; } - wk = kzalloc(sizeof(*wk) + req->ie_len, GFP_KERNEL); - if (!wk) + auth_data = kzalloc(sizeof(*auth_data) + req->ie_len, GFP_KERNEL); + if (!auth_data) return -ENOMEM; - memcpy(wk->filter_ta, req->bss->bssid, ETH_ALEN); + auth_data->bss = req->bss; if (req->ie && req->ie_len) { - memcpy(wk->ie, req->ie, req->ie_len); - wk->ie_len = req->ie_len; + memcpy(auth_data->ie, req->ie, req->ie_len); + auth_data->ie_len = req->ie_len; } if (req->key && req->key_len) { - wk->probe_auth.key_len = req->key_len; - wk->probe_auth.key_idx = req->key_idx; - memcpy(wk->probe_auth.key, req->key, req->key_len); + auth_data->key_len = req->key_len; + auth_data->key_idx = req->key_idx; + memcpy(auth_data->key, req->key, req->key_len); } - ssid = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); - memcpy(wk->probe_auth.ssid, ssid + 2, ssid[1]); - wk->probe_auth.ssid_len = ssid[1]; + auth_data->algorithm = auth_alg; - wk->probe_auth.algorithm = auth_alg; - wk->probe_auth.privacy = req->bss->capability & WLAN_CAPABILITY_PRIVACY; + /* try to authenticate/probe */ - /* if we already have a probe, don't probe again */ - if (req->bss->proberesp_ies) - wk->type = IEEE80211_WORK_AUTH; - else - wk->type = IEEE80211_WORK_DIRECT_PROBE; - wk->chan = req->bss->channel; - wk->chan_type = NL80211_CHAN_NO_HT; - wk->sdata = sdata; - wk->done = ieee80211_probe_auth_done; - - ieee80211_add_work(wk); - return 0; -} - -/* create and insert a dummy station entry */ -static int ieee80211_pre_assoc(struct ieee80211_sub_if_data *sdata, - u8 *bssid) { - struct sta_info *sta; - int err; - - sta = sta_info_alloc(sdata, bssid, GFP_KERNEL); - if (!sta) - return -ENOMEM; - - sta->dummy = true; - - err = sta_info_insert(sta); - sta = NULL; - if (err) { - printk(KERN_DEBUG "%s: failed to insert Dummy STA entry for" - " the AP (error %d)\n", sdata->name, err); - return err; - } - - return 0; -} - -static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk, - struct sk_buff *skb) -{ - struct ieee80211_local *local = wk->sdata->local; - struct ieee80211_mgmt *mgmt; - struct ieee80211_rx_status *rx_status; - struct ieee802_11_elems elems; - struct cfg80211_bss *cbss = wk->assoc.bss; - u16 status; + mutex_lock(&ifmgd->mtx); - if (!skb) { - sta_info_destroy_addr(wk->sdata, cbss->bssid); - cfg80211_send_assoc_timeout(wk->sdata->dev, wk->filter_ta); - goto destroy; + if ((ifmgd->auth_data && !ifmgd->auth_data->done) || + ifmgd->assoc_data) { + err = -EBUSY; + goto err_free; } - if (wk->type == IEEE80211_WORK_ASSOC_BEACON_WAIT) { - mutex_lock(&wk->sdata->u.mgd.mtx); - rx_status = (void *) skb->cb; - ieee802_11_parse_elems(skb->data + 24 + 12, skb->len - 24 - 12, &elems); - ieee80211_rx_bss_info(wk->sdata, (void *)skb->data, skb->len, rx_status, - &elems, true); - mutex_unlock(&wk->sdata->u.mgd.mtx); + if (ifmgd->auth_data) + ieee80211_destroy_auth_data(sdata, false); - wk->type = IEEE80211_WORK_ASSOC; - /* not really done yet */ - return WORK_DONE_REQUEUE; - } + /* prep auth_data so we don't go into idle on disassoc */ + ifmgd->auth_data = auth_data; - mgmt = (void *)skb->data; - status = le16_to_cpu(mgmt->u.assoc_resp.status_code); + if (ifmgd->associated) + ieee80211_set_disassoc(sdata, 0, 0, false, NULL); - if (status == WLAN_STATUS_SUCCESS) { - if (wk->assoc.synced) - drv_finish_tx_sync(local, wk->sdata, wk->filter_ta, - IEEE80211_TX_SYNC_ASSOC); + printk(KERN_DEBUG "%s: authenticate with %pM\n", + sdata->name, req->bss->bssid); - mutex_lock(&wk->sdata->u.mgd.mtx); - if (!ieee80211_assoc_success(wk, mgmt, skb->len)) { - mutex_unlock(&wk->sdata->u.mgd.mtx); - /* oops -- internal error -- send timeout for now */ - sta_info_destroy_addr(wk->sdata, cbss->bssid); - cfg80211_send_assoc_timeout(wk->sdata->dev, - wk->filter_ta); - return WORK_DONE_DESTROY; - } + err = ieee80211_prep_connection(sdata, req->bss, false); + if (err) + goto err_clear; - mutex_unlock(&wk->sdata->u.mgd.mtx); - } else { - /* assoc failed - destroy the dummy station entry */ - sta_info_destroy_addr(wk->sdata, cbss->bssid); + err = ieee80211_probe_auth(sdata); + if (err) { + sta_info_destroy_addr(sdata, req->bss->bssid); + goto err_clear; } - cfg80211_send_rx_assoc(wk->sdata->dev, skb->data, skb->len); - destroy: - if (wk->assoc.synced) - drv_finish_tx_sync(local, wk->sdata, wk->filter_ta, - IEEE80211_TX_SYNC_ASSOC); + /* hold our own reference */ + cfg80211_ref_bss(auth_data->bss); + err = 0; + goto out_unlock; + + err_clear: + ifmgd->auth_data = NULL; + err_free: + kfree(auth_data); + out_unlock: + mutex_unlock(&ifmgd->mtx); - return WORK_DONE_DESTROY; + return err; } int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, struct cfg80211_assoc_request *req) { + struct ieee80211_local *local = sdata->local; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_bss *bss = (void *)req->bss->priv; - struct ieee80211_work *wk; - const u8 *ssid; + struct ieee80211_mgd_assoc_data *assoc_data; + struct ieee80211_supported_band *sband; + const u8 *ssidie; int i, err; + ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); + if (!ssidie) + return -EINVAL; + + assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL); + if (!assoc_data) + return -ENOMEM; + mutex_lock(&ifmgd->mtx); - if (ifmgd->associated) { - if (!req->prev_bssid || - memcmp(req->prev_bssid, ifmgd->associated->bssid, - ETH_ALEN)) { - /* - * We are already associated and the request was not a - * reassociation request from the current BSS, so - * reject it. - */ - mutex_unlock(&ifmgd->mtx); - return -EALREADY; - } - /* Trying to reassociate - clear previous association state */ - ieee80211_set_disassoc(sdata, true, false); + if (ifmgd->associated) + ieee80211_set_disassoc(sdata, 0, 0, false, NULL); + + if (ifmgd->auth_data && !ifmgd->auth_data->done) { + err = -EBUSY; + goto err_free; } - mutex_unlock(&ifmgd->mtx); - wk = kzalloc(sizeof(*wk) + req->ie_len, GFP_KERNEL); - if (!wk) - return -ENOMEM; + if (ifmgd->assoc_data) { + err = -EBUSY; + goto err_free; + } - /* - * create a dummy station info entry in order - * to start accepting incoming EAPOL packets from the station - */ - err = ieee80211_pre_assoc(sdata, req->bss->bssid); - if (err) { - kfree(wk); - return err; + if (ifmgd->auth_data) { + bool match; + + /* keep sta info, bssid if matching */ + match = compare_ether_addr(ifmgd->bssid, req->bss->bssid) == 0; + ieee80211_destroy_auth_data(sdata, match); } + /* prepare assoc data */ + ifmgd->flags &= ~IEEE80211_STA_DISABLE_11N; ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; ifmgd->beacon_crc_valid = false; + /* + * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. + * We still associate in non-HT mode (11a/b/g) if any one of these + * ciphers is configured as pairwise. + * We can set this to true for non-11n hardware, that'll be checked + * separately along with the peer capabilities. + */ for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) ifmgd->flags |= IEEE80211_STA_DISABLE_11N; - if (req->flags & ASSOC_REQ_DISABLE_HT) ifmgd->flags |= IEEE80211_STA_DISABLE_11N; + /* Also disable HT if we don't support it or the AP doesn't use WMM */ + sband = local->hw.wiphy->bands[req->bss->channel->band]; + if (!sband->ht_cap.ht_supported || + local->hw.queues < 4 || !bss->wmm_used) + ifmgd->flags |= IEEE80211_STA_DISABLE_11N; + memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa)); memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask, sizeof(ifmgd->ht_capa_mask)); if (req->ie && req->ie_len) { - memcpy(wk->ie, req->ie, req->ie_len); - wk->ie_len = req->ie_len; - } else - wk->ie_len = 0; - - wk->assoc.bss = req->bss; + memcpy(assoc_data->ie, req->ie, req->ie_len); + assoc_data->ie_len = req->ie_len; + } - memcpy(wk->filter_ta, req->bss->bssid, ETH_ALEN); + assoc_data->bss = req->bss; - /* new association always uses requested smps mode */ if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { if (ifmgd->powersave) ifmgd->ap_smps = IEEE80211_SMPS_DYNAMIC; @@ -2682,47 +3333,27 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, } else ifmgd->ap_smps = ifmgd->req_smps; - wk->assoc.smps = ifmgd->ap_smps; - /* - * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. - * We still associate in non-HT mode (11a/b/g) if any one of these - * ciphers is configured as pairwise. - * We can set this to true for non-11n hardware, that'll be checked - * separately along with the peer capabilities. - */ - wk->assoc.use_11n = !(ifmgd->flags & IEEE80211_STA_DISABLE_11N); - wk->assoc.capability = req->bss->capability; - wk->assoc.wmm_used = bss->wmm_used; - wk->assoc.supp_rates = bss->supp_rates; - wk->assoc.supp_rates_len = bss->supp_rates_len; - wk->assoc.ht_information_ie = + assoc_data->capability = req->bss->capability; + assoc_data->wmm = bss->wmm_used && (local->hw.queues >= 4); + assoc_data->supp_rates = bss->supp_rates; + assoc_data->supp_rates_len = bss->supp_rates_len; + assoc_data->ht_information_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_INFORMATION); if (bss->wmm_used && bss->uapsd_supported && (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)) { - wk->assoc.uapsd_used = true; + assoc_data->uapsd = true; ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; } else { - wk->assoc.uapsd_used = false; + assoc_data->uapsd = false; ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; } - ssid = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); - memcpy(wk->assoc.ssid, ssid + 2, ssid[1]); - wk->assoc.ssid_len = ssid[1]; + memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]); + assoc_data->ssid_len = ssidie[1]; if (req->prev_bssid) - memcpy(wk->assoc.prev_bssid, req->prev_bssid, ETH_ALEN); - - wk->chan = req->bss->channel; - wk->chan_type = NL80211_CHAN_NO_HT; - wk->sdata = sdata; - wk->done = ieee80211_assoc_done; - if (!bss->dtim_period && - sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) - wk->type = IEEE80211_WORK_ASSOC_BEACON_WAIT; - else - wk->type = IEEE80211_WORK_ASSOC; + memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN); if (req->use_mfp) { ifmgd->mfp = IEEE80211_MFP_REQUIRED; @@ -2740,91 +3371,87 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, sdata->control_port_protocol = req->crypto.control_port_ethertype; sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; - ieee80211_add_work(wk); - return 0; + /* kick off associate process */ + + ifmgd->assoc_data = assoc_data; + + err = ieee80211_prep_connection(sdata, req->bss, true); + if (err) + goto err_clear; + + if (!bss->dtim_period && + sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) { + /* + * Wait up to one beacon interval ... + * should this be more if we miss one? + */ + printk(KERN_DEBUG "%s: waiting for beacon from %pM\n", + sdata->name, ifmgd->bssid); + assoc_data->timeout = jiffies + + TU_TO_EXP_TIME(req->bss->beacon_interval); + } else { + assoc_data->have_beacon = true; + assoc_data->sent_assoc = false; + assoc_data->timeout = jiffies; + } + run_again(ifmgd, assoc_data->timeout); + + if (bss->corrupt_data) { + char *corrupt_type = "data"; + if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) { + if (bss->corrupt_data & + IEEE80211_BSS_CORRUPT_PROBE_RESP) + corrupt_type = "beacon and probe response"; + else + corrupt_type = "beacon"; + } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) + corrupt_type = "probe response"; + printk(KERN_DEBUG "%s: associating with AP with corrupt %s\n", + sdata->name, corrupt_type); + } + + err = 0; + goto out; + err_clear: + ifmgd->assoc_data = NULL; + err_free: + kfree(assoc_data); + out: + mutex_unlock(&ifmgd->mtx); + + return err; } int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, - struct cfg80211_deauth_request *req, - void *cookie) + struct cfg80211_deauth_request *req) { - struct ieee80211_local *local = sdata->local; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - u8 bssid[ETH_ALEN]; - bool assoc_bss = false; + u8 frame_buf[DEAUTH_DISASSOC_LEN]; mutex_lock(&ifmgd->mtx); - memcpy(bssid, req->bss->bssid, ETH_ALEN); - if (ifmgd->associated == req->bss) { - ieee80211_set_disassoc(sdata, false, true); - mutex_unlock(&ifmgd->mtx); - assoc_bss = true; - } else { - bool not_auth_yet = false; - struct ieee80211_work *tmp, *wk = NULL; - + if (ifmgd->auth_data) { + ieee80211_destroy_auth_data(sdata, false); mutex_unlock(&ifmgd->mtx); - - mutex_lock(&local->mtx); - list_for_each_entry(tmp, &local->work_list, list) { - if (tmp->sdata != sdata) - continue; - - if (tmp->type != IEEE80211_WORK_DIRECT_PROBE && - tmp->type != IEEE80211_WORK_AUTH && - tmp->type != IEEE80211_WORK_ASSOC && - tmp->type != IEEE80211_WORK_ASSOC_BEACON_WAIT) - continue; - - if (memcmp(req->bss->bssid, tmp->filter_ta, ETH_ALEN)) - continue; - - not_auth_yet = tmp->type == IEEE80211_WORK_DIRECT_PROBE; - list_del_rcu(&tmp->list); - synchronize_rcu(); - wk = tmp; - break; - } - mutex_unlock(&local->mtx); - - if (wk && wk->type == IEEE80211_WORK_ASSOC) { - /* clean up dummy sta & TX sync */ - sta_info_destroy_addr(wk->sdata, wk->filter_ta); - if (wk->assoc.synced) - drv_finish_tx_sync(local, wk->sdata, - wk->filter_ta, - IEEE80211_TX_SYNC_ASSOC); - } else if (wk && wk->type == IEEE80211_WORK_AUTH) { - if (wk->probe_auth.synced) - drv_finish_tx_sync(local, wk->sdata, - wk->filter_ta, - IEEE80211_TX_SYNC_AUTH); - } - kfree(wk); - - /* - * If somebody requests authentication and we haven't - * sent out an auth frame yet there's no need to send - * out a deauth frame either. If the state was PROBE, - * then this is the case. If it's AUTH we have sent a - * frame, and if it's IDLE we have completed the auth - * process already. - */ - if (not_auth_yet) { - __cfg80211_auth_canceled(sdata->dev, bssid); - return 0; - } + return 0; } - printk(KERN_DEBUG "%s: deauthenticating from %pM by local choice (reason=%d)\n", - sdata->name, bssid, req->reason_code); + printk(KERN_DEBUG + "%s: deauthenticating from %pM by local choice (reason=%d)\n", + sdata->name, req->bssid, req->reason_code); + + if (ifmgd->associated && + compare_ether_addr(ifmgd->associated->bssid, req->bssid) == 0) + ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, + req->reason_code, true, frame_buf); + else + ieee80211_send_deauth_disassoc(sdata, req->bssid, + IEEE80211_STYPE_DEAUTH, + req->reason_code, true, + frame_buf); + mutex_unlock(&ifmgd->mtx); - ieee80211_send_deauth_disassoc(sdata, bssid, IEEE80211_STYPE_DEAUTH, - req->reason_code, cookie, - !req->local_state_change); - if (assoc_bss) - sta_info_flush(sdata->local, sdata); + __cfg80211_send_deauth(sdata->dev, frame_buf, DEAUTH_DISASSOC_LEN); mutex_lock(&sdata->local->mtx); ieee80211_recalc_idle(sdata->local); @@ -2834,11 +3461,11 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, } int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, - struct cfg80211_disassoc_request *req, - void *cookie) + struct cfg80211_disassoc_request *req) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; u8 bssid[ETH_ALEN]; + u8 frame_buf[DEAUTH_DISASSOC_LEN]; mutex_lock(&ifmgd->mtx); @@ -2857,14 +3484,12 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, sdata->name, req->bss->bssid, req->reason_code); memcpy(bssid, req->bss->bssid, ETH_ALEN); - ieee80211_set_disassoc(sdata, false, true); - + ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, + req->reason_code, !req->local_state_change, + frame_buf); mutex_unlock(&ifmgd->mtx); - ieee80211_send_deauth_disassoc(sdata, req->bss->bssid, - IEEE80211_STYPE_DISASSOC, req->reason_code, - cookie, !req->local_state_change); - sta_info_flush(sdata->local, sdata); + __cfg80211_send_disassoc(sdata->dev, frame_buf, DEAUTH_DISASSOC_LEN); mutex_lock(&sdata->local->mtx); ieee80211_recalc_idle(sdata->local); @@ -2873,6 +3498,19 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, return 0; } +void ieee80211_mgd_teardown(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + + mutex_lock(&ifmgd->mtx); + if (ifmgd->assoc_data) + ieee80211_destroy_assoc_data(sdata, false); + if (ifmgd->auth_data) + ieee80211_destroy_auth_data(sdata, false); + del_timer_sync(&ifmgd->timer); + mutex_unlock(&ifmgd->mtx); +} + void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, enum nl80211_cqm_rssi_threshold_event rssi_event, gfp_t gfp) diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c index 596efaf50e09..ef8eba1d736d 100644 --- a/net/mac80211/pm.c +++ b/net/mac80211/pm.c @@ -98,13 +98,12 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) mutex_lock(&local->sta_mtx); list_for_each_entry(sta, &local->sta_list, list) { if (sta->uploaded) { - sdata = sta->sdata; - if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) - sdata = container_of(sdata->bss, - struct ieee80211_sub_if_data, - u.ap); + enum ieee80211_sta_state state; - drv_sta_remove(local, sdata, &sta->sta); + state = sta->sta_state; + for (; state > IEEE80211_STA_NOTEXIST; state--) + WARN_ON(drv_sta_state(local, sta->sdata, sta, + state, state - 1)); } mesh_plink_quiesce(sta); diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c index 5a5a7767d541..b4f7600a3e36 100644 --- a/net/mac80211/rate.c +++ b/net/mac80211/rate.c @@ -159,7 +159,6 @@ static struct rate_control_ref *rate_control_alloc(const char *name, ref = kmalloc(sizeof(struct rate_control_ref), GFP_KERNEL); if (!ref) goto fail_ref; - kref_init(&ref->kref); ref->local = local; ref->ops = ieee80211_rate_control_ops_get(name); if (!ref->ops) @@ -184,11 +183,8 @@ fail_ref: return NULL; } -static void rate_control_release(struct kref *kref) +static void rate_control_free(struct rate_control_ref *ctrl_ref) { - struct rate_control_ref *ctrl_ref; - - ctrl_ref = container_of(kref, struct rate_control_ref, kref); ctrl_ref->ops->free(ctrl_ref->priv); #ifdef CONFIG_MAC80211_DEBUGFS @@ -293,8 +289,8 @@ bool rate_control_send_low(struct ieee80211_sta *sta, } EXPORT_SYMBOL(rate_control_send_low); -static void rate_idx_match_mask(struct ieee80211_tx_rate *rate, - int n_bitrates, u32 mask) +static bool rate_idx_match_legacy_mask(struct ieee80211_tx_rate *rate, + int n_bitrates, u32 mask) { int j; @@ -303,7 +299,7 @@ static void rate_idx_match_mask(struct ieee80211_tx_rate *rate, if (mask & (1 << j)) { /* Okay, found a suitable rate. Use it. */ rate->idx = j; - return; + return true; } } @@ -312,6 +308,112 @@ static void rate_idx_match_mask(struct ieee80211_tx_rate *rate, if (mask & (1 << j)) { /* Okay, found a suitable rate. Use it. */ rate->idx = j; + return true; + } + } + return false; +} + +static bool rate_idx_match_mcs_mask(struct ieee80211_tx_rate *rate, + u8 mcs_mask[IEEE80211_HT_MCS_MASK_LEN]) +{ + int i, j; + int ridx, rbit; + + ridx = rate->idx / 8; + rbit = rate->idx % 8; + + /* sanity check */ + if (ridx < 0 || ridx >= IEEE80211_HT_MCS_MASK_LEN) + return false; + + /* See whether the selected rate or anything below it is allowed. */ + for (i = ridx; i >= 0; i--) { + for (j = rbit; j >= 0; j--) + if (mcs_mask[i] & BIT(j)) { + rate->idx = i * 8 + j; + return true; + } + rbit = 7; + } + + /* Try to find a higher rate that would be allowed */ + ridx = (rate->idx + 1) / 8; + rbit = (rate->idx + 1) % 8; + + for (i = ridx; i < IEEE80211_HT_MCS_MASK_LEN; i++) { + for (j = rbit; j < 8; j++) + if (mcs_mask[i] & BIT(j)) { + rate->idx = i * 8 + j; + return true; + } + rbit = 0; + } + return false; +} + + + +static void rate_idx_match_mask(struct ieee80211_tx_rate *rate, + struct ieee80211_tx_rate_control *txrc, + u32 mask, + u8 mcs_mask[IEEE80211_HT_MCS_MASK_LEN]) +{ + struct ieee80211_tx_rate alt_rate; + + /* handle HT rates */ + if (rate->flags & IEEE80211_TX_RC_MCS) { + if (rate_idx_match_mcs_mask(rate, mcs_mask)) + return; + + /* also try the legacy rates. */ + alt_rate.idx = 0; + /* keep protection flags */ + alt_rate.flags = rate->flags & + (IEEE80211_TX_RC_USE_RTS_CTS | + IEEE80211_TX_RC_USE_CTS_PROTECT | + IEEE80211_TX_RC_USE_SHORT_PREAMBLE); + alt_rate.count = rate->count; + if (rate_idx_match_legacy_mask(&alt_rate, + txrc->sband->n_bitrates, + mask)) { + *rate = alt_rate; + return; + } + } else { + struct sk_buff *skb = txrc->skb; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + __le16 fc; + + /* handle legacy rates */ + if (rate_idx_match_legacy_mask(rate, txrc->sband->n_bitrates, + mask)) + return; + + /* if HT BSS, and we handle a data frame, also try HT rates */ + if (txrc->bss_conf->channel_type == NL80211_CHAN_NO_HT) + return; + + fc = hdr->frame_control; + if (!ieee80211_is_data(fc)) + return; + + alt_rate.idx = 0; + /* keep protection flags */ + alt_rate.flags = rate->flags & + (IEEE80211_TX_RC_USE_RTS_CTS | + IEEE80211_TX_RC_USE_CTS_PROTECT | + IEEE80211_TX_RC_USE_SHORT_PREAMBLE); + alt_rate.count = rate->count; + + alt_rate.flags |= IEEE80211_TX_RC_MCS; + + if ((txrc->bss_conf->channel_type == NL80211_CHAN_HT40MINUS) || + (txrc->bss_conf->channel_type == NL80211_CHAN_HT40PLUS)) + alt_rate.flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; + + if (rate_idx_match_mcs_mask(&alt_rate, mcs_mask)) { + *rate = alt_rate; return; } } @@ -335,8 +437,9 @@ void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, struct ieee80211_tx_info *info = IEEE80211_SKB_CB(txrc->skb); int i; u32 mask; + u8 mcs_mask[IEEE80211_HT_MCS_MASK_LEN]; - if (sta) { + if (sta && test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) { ista = &sta->sta; priv_sta = sta->rate_ctrl_priv; } @@ -344,7 +447,7 @@ void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { info->control.rates[i].idx = -1; info->control.rates[i].flags = 0; - info->control.rates[i].count = 1; + info->control.rates[i].count = 0; } if (sdata->local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) @@ -358,10 +461,14 @@ void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, * the common case. */ mask = sdata->rc_rateidx_mask[info->band]; + memcpy(mcs_mask, sdata->rc_rateidx_mcs_mask[info->band], + sizeof(mcs_mask)); if (mask != (1 << txrc->sband->n_bitrates) - 1) { if (sta) { /* Filter out rates that the STA does not support */ mask &= sta->sta.supp_rates[info->band]; + for (i = 0; i < sizeof(mcs_mask); i++) + mcs_mask[i] &= sta->sta.ht_cap.mcs.rx_mask[i]; } /* * Make sure the rate index selected for each TX rate is @@ -372,32 +479,18 @@ void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, /* Skip invalid rates */ if (info->control.rates[i].idx < 0) break; - /* Rate masking supports only legacy rates for now */ - if (info->control.rates[i].flags & IEEE80211_TX_RC_MCS) - continue; - rate_idx_match_mask(&info->control.rates[i], - txrc->sband->n_bitrates, mask); + rate_idx_match_mask(&info->control.rates[i], txrc, + mask, mcs_mask); } } BUG_ON(info->control.rates[0].idx < 0); } -struct rate_control_ref *rate_control_get(struct rate_control_ref *ref) -{ - kref_get(&ref->kref); - return ref; -} - -void rate_control_put(struct rate_control_ref *ref) -{ - kref_put(&ref->kref, rate_control_release); -} - int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, const char *name) { - struct rate_control_ref *ref, *old; + struct rate_control_ref *ref; ASSERT_RTNL(); @@ -417,12 +510,8 @@ int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, return -ENOENT; } - old = local->rate_ctrl; + WARN_ON(local->rate_ctrl); local->rate_ctrl = ref; - if (old) { - rate_control_put(old); - sta_info_flush(local, NULL); - } wiphy_debug(local->hw.wiphy, "Selected rate control algorithm '%s'\n", ref->ops->name); @@ -440,6 +529,6 @@ void rate_control_deinitialize(struct ieee80211_local *local) return; local->rate_ctrl = NULL; - rate_control_put(ref); + rate_control_free(ref); } diff --git a/net/mac80211/rate.h b/net/mac80211/rate.h index 168427b0ffdc..fbb1efdc4d04 100644 --- a/net/mac80211/rate.h +++ b/net/mac80211/rate.h @@ -14,7 +14,6 @@ #include <linux/netdevice.h> #include <linux/skbuff.h> #include <linux/types.h> -#include <linux/kref.h> #include <net/mac80211.h> #include "ieee80211_i.h" #include "sta_info.h" @@ -23,14 +22,11 @@ struct rate_control_ref { struct ieee80211_local *local; struct rate_control_ops *ops; void *priv; - struct kref kref; }; void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, struct sta_info *sta, struct ieee80211_tx_rate_control *txrc); -struct rate_control_ref *rate_control_get(struct rate_control_ref *ref); -void rate_control_put(struct rate_control_ref *ref); static inline void rate_control_tx_status(struct ieee80211_local *local, struct ieee80211_supported_band *sband, @@ -41,7 +37,7 @@ static inline void rate_control_tx_status(struct ieee80211_local *local, struct ieee80211_sta *ista = &sta->sta; void *priv_sta = sta->rate_ctrl_priv; - if (!ref) + if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) return; ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb); @@ -62,6 +58,7 @@ static inline void rate_control_rate_init(struct sta_info *sta) sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; ref->ops->rate_init(ref->priv, sband, ista, priv_sta); + set_sta_flag(sta, WLAN_STA_RATE_CONTROL); } static inline void rate_control_rate_update(struct ieee80211_local *local, diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c index ff5f7b84e825..16e0b277b9a8 100644 --- a/net/mac80211/rc80211_minstrel_ht.c +++ b/net/mac80211/rc80211_minstrel_ht.c @@ -568,6 +568,13 @@ minstrel_get_sample_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi) minstrel_next_sample_idx(mi); /* + * Sampling might add some overhead (RTS, no aggregation) + * to the frame. Hence, don't use sampling for the currently + * used max TP rate. + */ + if (sample_idx == mi->max_tp_rate) + return -1; + /* * When not using MRR, do not sample if the probability is already * higher than 95% to avoid wasting airtime */ @@ -692,6 +699,7 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband, int ack_dur; int stbc; int i; + unsigned int smps; /* fall back to the old minstrel for legacy stations */ if (!sta->ht_cap.ht_supported) @@ -731,6 +739,9 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband, oper_chan_type != NL80211_CHAN_HT40PLUS) sta_cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; + smps = (sta_cap & IEEE80211_HT_CAP_SM_PS) >> + IEEE80211_HT_CAP_SM_PS_SHIFT; + for (i = 0; i < ARRAY_SIZE(mi->groups); i++) { u16 req = 0; @@ -748,6 +759,11 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband, if ((sta_cap & req) != req) continue; + /* Mark MCS > 7 as unsupported if STA is in static SMPS mode */ + if (smps == WLAN_HT_CAP_SM_PS_STATIC && + minstrel_mcs_groups[i].streams > 1) + continue; + mi->groups[i].supported = mcs->rx_mask[minstrel_mcs_groups[i].streams - 1]; diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 5a5e504a8ffb..bcfe8c77c839 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -19,6 +19,7 @@ #include <linux/export.h> #include <net/mac80211.h> #include <net/ieee80211_radiotap.h> +#include <asm/unaligned.h> #include "ieee80211_i.h" #include "driver-ops.h" @@ -176,7 +177,8 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local, pos += 2; /* IEEE80211_RADIOTAP_DBM_ANTSIGNAL */ - if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) { + if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM && + !(status->flag & RX_FLAG_NO_SIGNAL_VAL)) { *pos = status->signal; rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL); @@ -226,7 +228,7 @@ 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 = 0; + int needed_headroom; struct sk_buff *skb, *skb2; struct net_device *prev_dev = NULL; int present_fcs_len = 0; @@ -488,12 +490,12 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx) if (ieee80211_has_tods(hdr->frame_control) || !ieee80211_has_fromds(hdr->frame_control)) return RX_DROP_MONITOR; - if (memcmp(hdr->addr3, dev_addr, ETH_ALEN) == 0) + if (compare_ether_addr(hdr->addr3, dev_addr) == 0) return RX_DROP_MONITOR; } else { if (!ieee80211_has_a4(hdr->frame_control)) return RX_DROP_MONITOR; - if (memcmp(hdr->addr4, dev_addr, ETH_ALEN) == 0) + if (compare_ether_addr(hdr->addr4, dev_addr) == 0) return RX_DROP_MONITOR; } } @@ -859,7 +861,12 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx) rx->sdata->vif.type != NL80211_IFTYPE_ADHOC && rx->sdata->vif.type != NL80211_IFTYPE_WDS && (!rx->sta || !test_sta_flag(rx->sta, WLAN_STA_ASSOC)))) { - if (rx->sta && rx->sta->dummy && + /* + * accept port control frames from the AP even when it's not + * yet marked ASSOC to prevent a race where we don't set the + * assoc bit quickly enough before it sends the first frame + */ + if (rx->sta && rx->sdata->vif.type == NL80211_IFTYPE_STATION && ieee80211_is_data_present(hdr->frame_control)) { u16 ethertype; u8 *payload; @@ -1056,20 +1063,9 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) return RX_DROP_MONITOR; } - if (skb_linearize(rx->skb)) - return RX_DROP_UNUSABLE; - /* the hdr variable is invalid now! */ - switch (rx->key->conf.cipher) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: - /* Check for weak IVs if possible */ - if (rx->sta && ieee80211_is_data(fc) && - (!(status->flag & RX_FLAG_IV_STRIPPED) || - !(status->flag & RX_FLAG_DECRYPTED)) && - ieee80211_wep_is_weak_iv(rx->skb, rx->key)) - rx->sta->wep_weak_iv_count++; - result = ieee80211_crypto_wep_decrypt(rx); break; case WLAN_CIPHER_SUITE_TKIP: @@ -1089,6 +1085,8 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) return RX_DROP_UNUSABLE; } + /* the hdr variable is invalid after the decrypt handlers */ + /* either the frame has been decrypted or will be dropped */ status->flag |= RX_FLAG_DECRYPTED; @@ -1145,19 +1143,15 @@ static void ap_sta_ps_start(struct sta_info *sta) static void ap_sta_ps_end(struct sta_info *sta) { - struct ieee80211_sub_if_data *sdata = sta->sdata; - - atomic_dec(&sdata->bss->num_sta_ps); - #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG printk(KERN_DEBUG "%s: STA %pM aid %d exits power save mode\n", - sdata->name, sta->sta.addr, sta->sta.aid); + sta->sdata->name, sta->sta.addr, sta->sta.aid); #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */ if (test_sta_flag(sta, WLAN_STA_PS_DRIVER)) { #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG printk(KERN_DEBUG "%s: STA %pM aid %d driver-ps-blocked\n", - sdata->name, sta->sta.addr, sta->sta.aid); + sta->sdata->name, sta->sta.addr, sta->sta.aid); #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */ return; } @@ -1307,8 +1301,10 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) sta->rx_fragments++; sta->rx_bytes += rx->skb->len; - sta->last_signal = status->signal; - ewma_add(&sta->avg_signal, -status->signal); + if (!(status->flag & RX_FLAG_NO_SIGNAL_VAL)) { + sta->last_signal = status->signal; + ewma_add(&sta->avg_signal, -status->signal); + } /* * Change STA power saving mode only at the end of a frame @@ -1955,6 +1951,9 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) return RX_DROP_MONITOR; } + if (!ifmsh->mshcfg.dot11MeshForwarding) + goto out; + fwd_skb = skb_copy(skb, GFP_ATOMIC); if (!fwd_skb) { if (net_ratelimit()) @@ -2180,12 +2179,14 @@ ieee80211_rx_h_mgmt_check(struct ieee80211_rx_data *rx) if (rx->sdata->vif.type == NL80211_IFTYPE_AP && ieee80211_is_beacon(mgmt->frame_control) && !(rx->flags & IEEE80211_RX_BEACON_REPORTED)) { - struct ieee80211_rx_status *status; + int sig = 0; + + if (rx->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) + sig = status->signal; - status = IEEE80211_SKB_RXCB(rx->skb); cfg80211_report_obss_beacon(rx->local->hw.wiphy, rx->skb->data, rx->skb->len, - status->freq, GFP_ATOMIC); + status->freq, sig, GFP_ATOMIC); rx->flags |= IEEE80211_RX_BEACON_REPORTED; } @@ -2268,9 +2269,11 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) sband = rx->local->hw.wiphy->bands[status->band]; - rate_control_rate_update(local, sband, rx->sta, - IEEE80211_RC_SMPS_CHANGED, - local->_oper_channel_type); + rate_control_rate_update( + local, sband, rx->sta, + IEEE80211_RC_SMPS_CHANGED, + ieee80211_get_tx_channel_type( + local, local->_oper_channel_type)); goto handled; } default: @@ -2337,7 +2340,7 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) if (sdata->vif.type != NL80211_IFTYPE_STATION) break; - if (memcmp(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN)) + if (compare_ether_addr(mgmt->bssid, sdata->u.mgd.bssid)) break; goto queue; @@ -2409,6 +2412,7 @@ static ieee80211_rx_result debug_noinline ieee80211_rx_h_userspace_mgmt(struct ieee80211_rx_data *rx) { struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb); + int sig = 0; /* skip known-bad action frames and return them in the next handler */ if (status->rx_flags & IEEE80211_RX_MALFORMED_ACTION_FRM) @@ -2421,7 +2425,10 @@ ieee80211_rx_h_userspace_mgmt(struct ieee80211_rx_data *rx) * it transmitted were processed or returned. */ - if (cfg80211_rx_mgmt(rx->sdata->dev, status->freq, + if (rx->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) + sig = status->signal; + + if (cfg80211_rx_mgmt(rx->sdata->dev, status->freq, sig, rx->skb->data, rx->skb->len, GFP_ATOMIC)) { if (rx->sta) @@ -2486,14 +2493,9 @@ static ieee80211_rx_result debug_noinline ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx) { struct ieee80211_sub_if_data *sdata = rx->sdata; - ieee80211_rx_result rxs; struct ieee80211_mgmt *mgmt = (void *)rx->skb->data; __le16 stype; - rxs = ieee80211_work_rx_mgmt(rx->sdata, rx->skb); - if (rxs != RX_CONTINUE) - return rxs; - stype = mgmt->frame_control & cpu_to_le16(IEEE80211_FCTL_STYPE); if (!ieee80211_vif_is_mesh(&sdata->vif) && @@ -2502,10 +2504,13 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx) return RX_DROP_MONITOR; switch (stype) { + case cpu_to_le16(IEEE80211_STYPE_AUTH): case cpu_to_le16(IEEE80211_STYPE_BEACON): case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP): /* process for all: mesh, mlme, ibss */ break; + case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP): + case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP): case cpu_to_le16(IEEE80211_STYPE_DEAUTH): case cpu_to_le16(IEEE80211_STYPE_DISASSOC): if (is_multicast_ether_addr(mgmt->da) && @@ -2517,7 +2522,6 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx) return RX_DROP_MONITOR; break; case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ): - case cpu_to_le16(IEEE80211_STYPE_AUTH): /* process only for ibss */ if (sdata->vif.type != NL80211_IFTYPE_ADHOC) return RX_DROP_MONITOR; @@ -2542,16 +2546,10 @@ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx, { struct ieee80211_sub_if_data *sdata; struct ieee80211_local *local = rx->local; - struct ieee80211_rtap_hdr { - struct ieee80211_radiotap_header hdr; - u8 flags; - u8 rate_or_pad; - __le16 chan_freq; - __le16 chan_flags; - } __packed *rthdr; struct sk_buff *skb = rx->skb, *skb2; struct net_device *prev_dev = NULL; struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb); + int needed_headroom; /* * If cooked monitor has been processed already, then @@ -2565,30 +2563,15 @@ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx, if (!local->cooked_mntrs) goto out_free_skb; - if (skb_headroom(skb) < sizeof(*rthdr) && - pskb_expand_head(skb, sizeof(*rthdr), 0, GFP_ATOMIC)) - goto out_free_skb; - - rthdr = (void *)skb_push(skb, sizeof(*rthdr)); - memset(rthdr, 0, sizeof(*rthdr)); - rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); - rthdr->hdr.it_present = - cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) | - (1 << IEEE80211_RADIOTAP_CHANNEL)); + /* room for the radiotap header based on driver features */ + needed_headroom = ieee80211_rx_radiotap_len(local, status); - if (rate) { - rthdr->rate_or_pad = rate->bitrate / 5; - rthdr->hdr.it_present |= - cpu_to_le32(1 << IEEE80211_RADIOTAP_RATE); - } - rthdr->chan_freq = cpu_to_le16(status->freq); + if (skb_headroom(skb) < needed_headroom && + pskb_expand_head(skb, needed_headroom, 0, GFP_ATOMIC)) + goto out_free_skb; - if (status->band == IEEE80211_BAND_5GHZ) - rthdr->chan_flags = cpu_to_le16(IEEE80211_CHAN_OFDM | - IEEE80211_CHAN_5GHZ); - else - rthdr->chan_flags = cpu_to_le16(IEEE80211_CHAN_DYN | - IEEE80211_CHAN_2GHZ); + /* prepend radiotap information */ + ieee80211_add_rx_radiotap_header(local, skb, rate, needed_headroom); skb_set_mac_header(skb, 0); skb->ip_summed = CHECKSUM_UNNECESSARY; @@ -2956,7 +2939,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, if (ieee80211_is_data(fc)) { prev_sta = NULL; - for_each_sta_info_rx(local, hdr->addr2, sta, tmp) { + for_each_sta_info(local, hdr->addr2, sta, tmp) { if (!prev_sta) { prev_sta = sta; continue; @@ -3000,7 +2983,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, continue; } - rx.sta = sta_info_get_bss_rx(prev, hdr->addr2); + rx.sta = sta_info_get_bss(prev, hdr->addr2); rx.sdata = prev; ieee80211_prepare_and_rx_handle(&rx, skb, false); @@ -3008,7 +2991,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, } if (prev) { - rx.sta = sta_info_get_bss_rx(prev, hdr->addr2); + rx.sta = sta_info_get_bss(prev, hdr->addr2); rx.sdata = prev; if (ieee80211_prepare_and_rx_handle(&rx, skb, true)) diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index 9270771702fe..33cd16901378 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -13,6 +13,7 @@ */ #include <linux/if_arp.h> +#include <linux/etherdevice.h> #include <linux/rtnetlink.h> #include <linux/pm_qos.h> #include <net/sch_generic.h> @@ -103,16 +104,35 @@ ieee80211_bss_info_update(struct ieee80211_local *local, cbss->free_priv = ieee80211_rx_bss_free; bss = (void *)cbss->priv; + if (elems->parse_error) { + if (beacon) + bss->corrupt_data |= IEEE80211_BSS_CORRUPT_BEACON; + else + bss->corrupt_data |= IEEE80211_BSS_CORRUPT_PROBE_RESP; + } else { + if (beacon) + bss->corrupt_data &= ~IEEE80211_BSS_CORRUPT_BEACON; + else + bss->corrupt_data &= ~IEEE80211_BSS_CORRUPT_PROBE_RESP; + } + /* save the ERP value so that it is available at association time */ - if (elems->erp_info && elems->erp_info_len >= 1) { + if (elems->erp_info && elems->erp_info_len >= 1 && + (!elems->parse_error || + !(bss->valid_data & IEEE80211_BSS_VALID_ERP))) { bss->erp_value = elems->erp_info[0]; bss->has_erp_value = true; + if (!elems->parse_error) + bss->valid_data |= IEEE80211_BSS_VALID_ERP; } - if (elems->tim) { + if (elems->tim && (!elems->parse_error || + !(bss->valid_data & IEEE80211_BSS_VALID_DTIM))) { struct ieee80211_tim_ie *tim_ie = (struct ieee80211_tim_ie *)elems->tim; bss->dtim_period = tim_ie->dtim_period; + if (!elems->parse_error) + bss->valid_data |= IEEE80211_BSS_VALID_DTIM; } /* If the beacon had no TIM IE, or it was invalid, use 1 */ @@ -120,26 +140,38 @@ ieee80211_bss_info_update(struct ieee80211_local *local, bss->dtim_period = 1; /* replace old supported rates if we get new values */ - srlen = 0; - if (elems->supp_rates) { - clen = IEEE80211_MAX_SUPP_RATES; - if (clen > elems->supp_rates_len) - clen = elems->supp_rates_len; - memcpy(bss->supp_rates, elems->supp_rates, clen); - srlen += clen; - } - if (elems->ext_supp_rates) { - clen = IEEE80211_MAX_SUPP_RATES - srlen; - if (clen > elems->ext_supp_rates_len) - clen = elems->ext_supp_rates_len; - memcpy(bss->supp_rates + srlen, elems->ext_supp_rates, clen); - srlen += clen; + if (!elems->parse_error || + !(bss->valid_data & IEEE80211_BSS_VALID_RATES)) { + srlen = 0; + if (elems->supp_rates) { + clen = IEEE80211_MAX_SUPP_RATES; + if (clen > elems->supp_rates_len) + clen = elems->supp_rates_len; + memcpy(bss->supp_rates, elems->supp_rates, clen); + srlen += clen; + } + if (elems->ext_supp_rates) { + clen = IEEE80211_MAX_SUPP_RATES - srlen; + if (clen > elems->ext_supp_rates_len) + clen = elems->ext_supp_rates_len; + memcpy(bss->supp_rates + srlen, elems->ext_supp_rates, + clen); + srlen += clen; + } + if (srlen) { + bss->supp_rates_len = srlen; + if (!elems->parse_error) + bss->valid_data |= IEEE80211_BSS_VALID_RATES; + } } - if (srlen) - bss->supp_rates_len = srlen; - bss->wmm_used = elems->wmm_param || elems->wmm_info; - bss->uapsd_supported = is_uapsd_supported(elems); + if (!elems->parse_error || + !(bss->valid_data & IEEE80211_BSS_VALID_WMM)) { + bss->wmm_used = elems->wmm_param || elems->wmm_info; + bss->uapsd_supported = is_uapsd_supported(elems); + if (!elems->parse_error) + bss->valid_data |= IEEE80211_BSS_VALID_WMM; + } if (!beacon) bss->last_probe_resp = jiffies; @@ -176,7 +208,7 @@ ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) presp = ieee80211_is_probe_resp(fc); if (presp) { /* ignore ProbeResp to foreign address */ - if (memcmp(mgmt->da, sdata->vif.addr, ETH_ALEN)) + if (compare_ether_addr(mgmt->da, sdata->vif.addr)) return RX_DROP_MONITOR; presp = true; diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index ff11f6bf8266..38137cb5f6f0 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -9,6 +9,7 @@ #include <linux/module.h> #include <linux/init.h> +#include <linux/etherdevice.h> #include <linux/netdevice.h> #include <linux/types.h> #include <linux/slab.h> @@ -100,27 +101,8 @@ struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, sta = rcu_dereference_check(local->sta_hash[STA_HASH(addr)], lockdep_is_held(&local->sta_mtx)); while (sta) { - if (sta->sdata == sdata && !sta->dummy && - memcmp(sta->sta.addr, addr, ETH_ALEN) == 0) - break; - sta = rcu_dereference_check(sta->hnext, - lockdep_is_held(&local->sta_mtx)); - } - return sta; -} - -/* get a station info entry even if it is a dummy station*/ -struct sta_info *sta_info_get_rx(struct ieee80211_sub_if_data *sdata, - const u8 *addr) -{ - struct ieee80211_local *local = sdata->local; - struct sta_info *sta; - - sta = rcu_dereference_check(local->sta_hash[STA_HASH(addr)], - lockdep_is_held(&local->sta_mtx)); - while (sta) { if (sta->sdata == sdata && - memcmp(sta->sta.addr, addr, ETH_ALEN) == 0) + compare_ether_addr(sta->sta.addr, addr) == 0) break; sta = rcu_dereference_check(sta->hnext, lockdep_is_held(&local->sta_mtx)); @@ -143,31 +125,7 @@ struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, while (sta) { if ((sta->sdata == sdata || (sta->sdata->bss && sta->sdata->bss == sdata->bss)) && - !sta->dummy && - memcmp(sta->sta.addr, addr, ETH_ALEN) == 0) - break; - sta = rcu_dereference_check(sta->hnext, - lockdep_is_held(&local->sta_mtx)); - } - return sta; -} - -/* - * Get sta info either from the specified interface - * or from one of its vlans (including dummy stations) - */ -struct sta_info *sta_info_get_bss_rx(struct ieee80211_sub_if_data *sdata, - const u8 *addr) -{ - struct ieee80211_local *local = sdata->local; - struct sta_info *sta; - - sta = rcu_dereference_check(local->sta_hash[STA_HASH(addr)], - lockdep_is_held(&local->sta_mtx)); - while (sta) { - if ((sta->sdata == sdata || - (sta->sdata->bss && sta->sdata->bss == sdata->bss)) && - memcmp(sta->sta.addr, addr, ETH_ALEN) == 0) + compare_ether_addr(sta->sta.addr, addr) == 0) break; sta = rcu_dereference_check(sta->hnext, lockdep_is_held(&local->sta_mtx)); @@ -208,10 +166,8 @@ struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, */ void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) { - if (sta->rate_ctrl) { + if (sta->rate_ctrl) rate_control_free_sta(sta); - rate_control_put(sta->rate_ctrl); - } #ifdef CONFIG_MAC80211_VERBOSE_DEBUG wiphy_debug(local->hw.wiphy, "Destroyed STA %pM\n", sta->sta.addr); @@ -264,13 +220,11 @@ static int sta_prepare_rate_control(struct ieee80211_local *local, if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) return 0; - sta->rate_ctrl = rate_control_get(local->rate_ctrl); + sta->rate_ctrl = local->rate_ctrl; sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, &sta->sta, gfp); - if (!sta->rate_ctrl_priv) { - rate_control_put(sta->rate_ctrl); + if (!sta->rate_ctrl_priv) return -ENOMEM; - } return 0; } @@ -297,6 +251,8 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, sta->sdata = sdata; sta->last_rx = jiffies; + sta->sta_state = IEEE80211_STA_NONE; + do_posix_clock_monotonic_gettime(&uptime); sta->last_connected = uptime.tv_sec; ewma_init(&sta->avg_signal, 1024, 8); @@ -353,6 +309,43 @@ static int sta_info_insert_check(struct sta_info *sta) return 0; } +static int sta_info_insert_drv_state(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + struct sta_info *sta) +{ + enum ieee80211_sta_state state; + int err = 0; + + for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { + err = drv_sta_state(local, sdata, sta, state, state + 1); + if (err) + break; + } + + if (!err) { + /* + * Drivers using legacy sta_add/sta_remove callbacks only + * get uploaded set to true after sta_add is called. + */ + if (!local->ops->sta_add) + sta->uploaded = true; + return 0; + } + + if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { + printk(KERN_DEBUG + "%s: failed to move IBSS STA %pM to state %d (%d) - keeping it anyway.\n", + sdata->name, sta->sta.addr, state + 1, err); + err = 0; + } + + /* unwind on error */ + for (; state > IEEE80211_STA_NOTEXIST; state--) + WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); + + return err; +} + /* * should be called with sta_mtx locked * this function replaces the mutex lock @@ -362,70 +355,43 @@ static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) { struct ieee80211_local *local = sta->local; struct ieee80211_sub_if_data *sdata = sta->sdata; - struct sta_info *exist_sta; - bool dummy_reinsert = false; + struct station_info sinfo; int err = 0; lockdep_assert_held(&local->sta_mtx); - /* - * check if STA exists already. - * only accept a scenario of a second call to sta_info_insert_finish - * with a dummy station entry that was inserted earlier - * in that case - assume that the dummy station flag should - * be removed. - */ - exist_sta = sta_info_get_bss_rx(sdata, sta->sta.addr); - if (exist_sta) { - if (exist_sta == sta && sta->dummy) { - dummy_reinsert = true; - } else { - err = -EEXIST; - goto out_err; - } + /* check if STA exists already */ + if (sta_info_get_bss(sdata, sta->sta.addr)) { + err = -EEXIST; + goto out_err; } - if (!sta->dummy || dummy_reinsert) { - /* notify driver */ - err = drv_sta_add(local, sdata, &sta->sta); - if (err) { - if (sdata->vif.type != NL80211_IFTYPE_ADHOC) - goto out_err; - printk(KERN_DEBUG "%s: failed to add IBSS STA %pM to " - "driver (%d) - keeping it anyway.\n", - sdata->name, sta->sta.addr, err); - } else - sta->uploaded = true; - } + /* notify driver */ + err = sta_info_insert_drv_state(local, sdata, sta); + if (err) + goto out_err; - if (!dummy_reinsert) { - local->num_sta++; - local->sta_generation++; - smp_mb(); + local->num_sta++; + local->sta_generation++; + smp_mb(); - /* make the station visible */ - sta_info_hash_add(local, sta); + /* make the station visible */ + sta_info_hash_add(local, sta); - list_add(&sta->list, &local->sta_list); - } else { - sta->dummy = false; - } + list_add(&sta->list, &local->sta_list); - if (!sta->dummy) { - struct station_info sinfo; + set_sta_flag(sta, WLAN_STA_INSERTED); - ieee80211_sta_debugfs_add(sta); - rate_control_add_sta_debugfs(sta); + ieee80211_sta_debugfs_add(sta); + rate_control_add_sta_debugfs(sta); - memset(&sinfo, 0, sizeof(sinfo)); - sinfo.filled = 0; - sinfo.generation = local->sta_generation; - cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL); - } + memset(&sinfo, 0, sizeof(sinfo)); + sinfo.filled = 0; + sinfo.generation = local->sta_generation; + cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL); #ifdef CONFIG_MAC80211_VERBOSE_DEBUG - wiphy_debug(local->hw.wiphy, "Inserted %sSTA %pM\n", - sta->dummy ? "dummy " : "", sta->sta.addr); + wiphy_debug(local->hw.wiphy, "Inserted STA %pM\n", sta->sta.addr); #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ /* move reference to rcu-protected */ @@ -477,25 +443,6 @@ int sta_info_insert(struct sta_info *sta) return err; } -/* Caller must hold sta->local->sta_mtx */ -int sta_info_reinsert(struct sta_info *sta) -{ - struct ieee80211_local *local = sta->local; - int err = 0; - - err = sta_info_insert_check(sta); - if (err) { - mutex_unlock(&local->sta_mtx); - return err; - } - - might_sleep(); - - err = sta_info_insert_finish(sta); - rcu_read_unlock(); - return err; -} - static inline void __bss_tim_set(struct ieee80211_if_ap *bss, u16 aid) { /* @@ -711,7 +658,7 @@ static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, return have_buffered; } -static int __must_check __sta_info_destroy(struct sta_info *sta) +int __must_check __sta_info_destroy(struct sta_info *sta) { struct ieee80211_local *local; struct ieee80211_sub_if_data *sdata; @@ -726,6 +673,8 @@ static int __must_check __sta_info_destroy(struct sta_info *sta) local = sta->local; sdata = sta->sdata; + lockdep_assert_held(&local->sta_mtx); + /* * Before removing the station from the driver and * rate control, it might still start new aggregation @@ -750,33 +699,24 @@ static int __must_check __sta_info_destroy(struct sta_info *sta) sta->dead = true; - if (test_sta_flag(sta, WLAN_STA_PS_STA) || - test_sta_flag(sta, WLAN_STA_PS_DRIVER)) { - BUG_ON(!sdata->bss); - - clear_sta_flag(sta, WLAN_STA_PS_STA); - clear_sta_flag(sta, WLAN_STA_PS_DRIVER); - - atomic_dec(&sdata->bss->num_sta_ps); - sta_info_recalc_tim(sta); - } - local->num_sta--; local->sta_generation++; if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); - while (sta->sta_state > IEEE80211_STA_NONE) - sta_info_move_state(sta, sta->sta_state - 1); + while (sta->sta_state > IEEE80211_STA_NONE) { + ret = sta_info_move_state(sta, sta->sta_state - 1); + if (ret) { + WARN_ON_ONCE(1); + break; + } + } if (sta->uploaded) { - if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) - sdata = container_of(sdata->bss, - struct ieee80211_sub_if_data, - u.ap); - drv_sta_remove(local, sdata, &sta->sta); - sdata = sta->sdata; + ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, + IEEE80211_STA_NOTEXIST); + WARN_ON_ONCE(ret != 0); } /* @@ -787,6 +727,15 @@ static int __must_check __sta_info_destroy(struct sta_info *sta) */ synchronize_rcu(); + if (test_sta_flag(sta, WLAN_STA_PS_STA)) { + BUG_ON(!sdata->bss); + + clear_sta_flag(sta, WLAN_STA_PS_STA); + + atomic_dec(&sdata->bss->num_sta_ps); + sta_info_recalc_tim(sta); + } + for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]); __skb_queue_purge(&sta->ps_tx_buf[ac]); @@ -815,35 +764,20 @@ static int __must_check __sta_info_destroy(struct sta_info *sta) } #endif - /* There could be some memory leaks because of ampdu tx pending queue - * not being freed before destroying the station info. - * - * Make sure that such queues are purged before freeing the station - * info. - * TODO: We have to somehow postpone the full destruction - * until the aggregation stop completes. Refer - * http://thread.gmane.org/gmane.linux.kernel.wireless.general/81936 + /* + * Destroy aggregation state here. It would be nice to wait for the + * driver to finish aggregation stop and then clean up, but for now + * drivers have to handle aggregation stop being requested, followed + * directly by station destruction. */ - - mutex_lock(&sta->ampdu_mlme.mtx); - for (i = 0; i < STA_TID_NUM; i++) { - tid_tx = rcu_dereference_protected_tid_tx(sta, i); + tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]); if (!tid_tx) continue; - if (skb_queue_len(&tid_tx->pending)) { -#ifdef CONFIG_MAC80211_HT_DEBUG - wiphy_debug(local->hw.wiphy, "TX A-MPDU purging %d " - "packets for tid=%d\n", - skb_queue_len(&tid_tx->pending), i); -#endif /* CONFIG_MAC80211_HT_DEBUG */ - __skb_queue_purge(&tid_tx->pending); - } - kfree_rcu(tid_tx, rcu_head); + __skb_queue_purge(&tid_tx->pending); + kfree(tid_tx); } - mutex_unlock(&sta->ampdu_mlme.mtx); - sta_info_free(local, sta); return 0; @@ -855,7 +789,7 @@ int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) int ret; mutex_lock(&sdata->local->sta_mtx); - sta = sta_info_get_rx(sdata, addr); + sta = sta_info_get(sdata, addr); ret = __sta_info_destroy(sta); mutex_unlock(&sdata->local->sta_mtx); @@ -869,7 +803,7 @@ int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, int ret; mutex_lock(&sdata->local->sta_mtx); - sta = sta_info_get_bss_rx(sdata, addr); + sta = sta_info_get_bss(sdata, addr); ret = __sta_info_destroy(sta); mutex_unlock(&sdata->local->sta_mtx); @@ -932,8 +866,10 @@ int sta_info_flush(struct ieee80211_local *local, mutex_lock(&local->sta_mtx); list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { - if (!sdata || sdata == sta->sdata) + if (!sdata || sdata == sta->sdata) { WARN_ON(__sta_info_destroy(sta)); + ret++; + } } mutex_unlock(&local->sta_mtx); @@ -1009,9 +945,11 @@ EXPORT_SYMBOL(ieee80211_find_sta); static void clear_sta_ps_flags(void *_sta) { struct sta_info *sta = _sta; + struct ieee80211_sub_if_data *sdata = sta->sdata; clear_sta_flag(sta, WLAN_STA_PS_DRIVER); - clear_sta_flag(sta, WLAN_STA_PS_STA); + if (test_and_clear_sta_flag(sta, WLAN_STA_PS_STA)) + atomic_dec(&sdata->bss->num_sta_ps); } /* powersave support code */ @@ -1113,7 +1051,7 @@ static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata, * exchange. Also set EOSP to indicate this packet * ends the poll/service period. */ - info->flags |= IEEE80211_TX_CTL_POLL_RESPONSE | + info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | IEEE80211_TX_STATUS_EOSP | IEEE80211_TX_CTL_REQ_TX_STATUS; @@ -1240,7 +1178,7 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta, * STA may still remain is PS mode after this frame * exchange. */ - info->flags |= IEEE80211_TX_CTL_POLL_RESPONSE; + info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; /* * Use MoreData flag to indicate whether there are @@ -1410,28 +1348,68 @@ void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, } EXPORT_SYMBOL(ieee80211_sta_set_buffered); -int sta_info_move_state_checked(struct sta_info *sta, - enum ieee80211_sta_state new_state) +int sta_info_move_state(struct sta_info *sta, + enum ieee80211_sta_state new_state) { might_sleep(); if (sta->sta_state == new_state) return 0; + /* check allowed transitions first */ + + switch (new_state) { + case IEEE80211_STA_NONE: + if (sta->sta_state != IEEE80211_STA_AUTH) + return -EINVAL; + break; + case IEEE80211_STA_AUTH: + if (sta->sta_state != IEEE80211_STA_NONE && + sta->sta_state != IEEE80211_STA_ASSOC) + return -EINVAL; + break; + case IEEE80211_STA_ASSOC: + if (sta->sta_state != IEEE80211_STA_AUTH && + sta->sta_state != IEEE80211_STA_AUTHORIZED) + return -EINVAL; + break; + case IEEE80211_STA_AUTHORIZED: + if (sta->sta_state != IEEE80211_STA_ASSOC) + return -EINVAL; + break; + default: + WARN(1, "invalid state %d", new_state); + return -EINVAL; + } + +#ifdef CONFIG_MAC80211_VERBOSE_DEBUG + printk(KERN_DEBUG "%s: moving STA %pM to state %d\n", + sta->sdata->name, sta->sta.addr, new_state); +#endif + + /* + * notify the driver before the actual changes so it can + * fail the transition + */ + if (test_sta_flag(sta, WLAN_STA_INSERTED)) { + int err = drv_sta_state(sta->local, sta->sdata, sta, + sta->sta_state, new_state); + if (err) + return err; + } + + /* reflect the change in all state variables */ + switch (new_state) { case IEEE80211_STA_NONE: if (sta->sta_state == IEEE80211_STA_AUTH) clear_bit(WLAN_STA_AUTH, &sta->_flags); - else - return -EINVAL; break; case IEEE80211_STA_AUTH: if (sta->sta_state == IEEE80211_STA_NONE) set_bit(WLAN_STA_AUTH, &sta->_flags); else if (sta->sta_state == IEEE80211_STA_ASSOC) clear_bit(WLAN_STA_ASSOC, &sta->_flags); - else - return -EINVAL; break; case IEEE80211_STA_ASSOC: if (sta->sta_state == IEEE80211_STA_AUTH) { @@ -1440,24 +1418,19 @@ int sta_info_move_state_checked(struct sta_info *sta, if (sta->sdata->vif.type == NL80211_IFTYPE_AP) atomic_dec(&sta->sdata->u.ap.num_sta_authorized); clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); - } else - return -EINVAL; + } break; case IEEE80211_STA_AUTHORIZED: if (sta->sta_state == IEEE80211_STA_ASSOC) { if (sta->sdata->vif.type == NL80211_IFTYPE_AP) atomic_inc(&sta->sdata->u.ap.num_sta_authorized); set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); - } else - return -EINVAL; + } break; default: - WARN(1, "invalid state %d", new_state); - return -EINVAL; + break; } - printk(KERN_DEBUG "%s: moving STA %pM to state %d\n", - sta->sdata->name, sta->sta.addr, new_state); sta->sta_state = new_state; return 0; diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index 6f77f12dc3fc..ab0576827baf 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -14,6 +14,7 @@ #include <linux/if_ether.h> #include <linux/workqueue.h> #include <linux/average.h> +#include <linux/etherdevice.h> #include "key.h" /** @@ -52,6 +53,8 @@ * @WLAN_STA_SP: Station is in a service period, so don't try to * reply to other uAPSD trigger frames or PS-Poll. * @WLAN_STA_4ADDR_EVENT: 4-addr event was already sent for this frame. + * @WLAN_STA_INSERTED: This station is inserted into the hash table. + * @WLAN_STA_RATE_CONTROL: rate control was initialized for this station. */ enum ieee80211_sta_info_flags { WLAN_STA_AUTH, @@ -71,14 +74,8 @@ enum ieee80211_sta_info_flags { WLAN_STA_UAPSD, WLAN_STA_SP, WLAN_STA_4ADDR_EVENT, -}; - -enum ieee80211_sta_state { - /* NOTE: These need to be ordered correctly! */ - IEEE80211_STA_NONE, - IEEE80211_STA_AUTH, - IEEE80211_STA_ASSOC, - IEEE80211_STA_AUTHORIZED, + WLAN_STA_INSERTED, + WLAN_STA_RATE_CONTROL, }; #define STA_TID_NUM 16 @@ -271,8 +268,6 @@ struct sta_ampdu_mlme { * @dead: set to true when sta is unlinked * @uploaded: set to true when sta is uploaded to the driver * @lost_packets: number of consecutive lost packets - * @dummy: indicate a dummy station created for receiving - * EAP frames before association * @sta: station information we share with the driver * @sta_state: duplicates information about station state (for debug) * @beacon_loss_count: number of times beacon loss has triggered @@ -370,9 +365,6 @@ struct sta_info { unsigned int lost_packets; unsigned int beacon_loss_count; - /* should be right in front of sta to be in the same cache line */ - bool dummy; - /* keep last! */ struct ieee80211_sta sta; }; @@ -427,13 +419,17 @@ static inline int test_and_set_sta_flag(struct sta_info *sta, return test_and_set_bit(flag, &sta->_flags); } -int sta_info_move_state_checked(struct sta_info *sta, - enum ieee80211_sta_state new_state); +int sta_info_move_state(struct sta_info *sta, + enum ieee80211_sta_state new_state); -static inline void sta_info_move_state(struct sta_info *sta, - enum ieee80211_sta_state new_state) +static inline void sta_info_pre_move_state(struct sta_info *sta, + enum ieee80211_sta_state new_state) { - int ret = sta_info_move_state_checked(sta, new_state); + int ret; + + WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); + + ret = sta_info_move_state(sta, new_state); WARN_ON_ONCE(ret); } @@ -470,15 +466,9 @@ rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid) struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, const u8 *addr); -struct sta_info *sta_info_get_rx(struct ieee80211_sub_if_data *sdata, - const u8 *addr); - struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, const u8 *addr); -struct sta_info *sta_info_get_bss_rx(struct ieee80211_sub_if_data *sdata, - const u8 *addr); - static inline void for_each_sta_info_type_check(struct ieee80211_local *local, const u8 *addr, @@ -487,23 +477,7 @@ void for_each_sta_info_type_check(struct ieee80211_local *local, { } -#define for_each_sta_info(local, _addr, _sta, nxt) \ - for ( /* initialise loop */ \ - _sta = rcu_dereference(local->sta_hash[STA_HASH(_addr)]),\ - nxt = _sta ? rcu_dereference(_sta->hnext) : NULL; \ - /* typecheck */ \ - for_each_sta_info_type_check(local, (_addr), _sta, nxt),\ - /* continue condition */ \ - _sta; \ - /* advance loop */ \ - _sta = nxt, \ - nxt = _sta ? rcu_dereference(_sta->hnext) : NULL \ - ) \ - /* run code only if address matches and it's not a dummy sta */ \ - if (memcmp(_sta->sta.addr, (_addr), ETH_ALEN) == 0 && \ - !_sta->dummy) - -#define for_each_sta_info_rx(local, _addr, _sta, nxt) \ +#define for_each_sta_info(local, _addr, _sta, nxt) \ for ( /* initialise loop */ \ _sta = rcu_dereference(local->sta_hash[STA_HASH(_addr)]),\ nxt = _sta ? rcu_dereference(_sta->hnext) : NULL; \ @@ -516,7 +490,7 @@ void for_each_sta_info_type_check(struct ieee80211_local *local, nxt = _sta ? rcu_dereference(_sta->hnext) : NULL \ ) \ /* compare address and run code only if it matches */ \ - if (memcmp(_sta->sta.addr, (_addr), ETH_ALEN) == 0) + if (compare_ether_addr(_sta->sta.addr, (_addr)) == 0) /* * Get STA info by index, BROKEN! @@ -542,8 +516,8 @@ void sta_info_free(struct ieee80211_local *local, struct sta_info *sta); */ int sta_info_insert(struct sta_info *sta); int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU); -int sta_info_reinsert(struct sta_info *sta); +int __must_check __sta_info_destroy(struct sta_info *sta); int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr); int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, @@ -555,6 +529,9 @@ void sta_info_init(struct ieee80211_local *local); void sta_info_stop(struct ieee80211_local *local); int sta_info_flush(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata); +void sta_set_rate_info_tx(struct sta_info *sta, + const struct ieee80211_tx_rate *rate, + struct rate_info *rinfo); void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, unsigned long exp_time); diff --git a/net/mac80211/status.c b/net/mac80211/status.c index 30c265c98f73..5f8f89e89d6b 100644 --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -10,7 +10,9 @@ */ #include <linux/export.h> +#include <linux/etherdevice.h> #include <net/mac80211.h> +#include <asm/unaligned.h> #include "ieee80211_i.h" #include "rate.h" #include "mesh.h" @@ -350,7 +352,6 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) bool send_to_cooked; bool acked; struct ieee80211_bar *bar; - u16 tid; int rtap_len; for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { @@ -377,7 +378,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) for_each_sta_info(local, hdr->addr1, sta, tmp) { /* skip wrong virtual interface */ - if (memcmp(hdr->addr2, sta->sdata->vif.addr, ETH_ALEN)) + if (compare_ether_addr(hdr->addr2, sta->sdata->vif.addr)) continue; if (info->flags & IEEE80211_TX_STATUS_EOSP) @@ -412,7 +413,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) } if (!acked && ieee80211_is_back_req(fc)) { - u16 control; + u16 tid, control; /* * BAR failed, store the last SSN and retry sending @@ -516,7 +517,8 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) if (ieee80211_is_nullfunc(hdr->frame_control) || ieee80211_is_qos_nullfunc(hdr->frame_control)) { - bool acked = info->flags & IEEE80211_TX_STAT_ACK; + acked = info->flags & IEEE80211_TX_STAT_ACK; + cfg80211_probe_status(skb->dev, hdr->addr1, cookie, acked, GFP_ATOMIC); } else { diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index e05667cd5e76..782a60198df4 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -226,12 +226,12 @@ ieee80211_tx_h_dynamic_ps(struct ieee80211_tx_data *tx) * have correct qos tag for some reason, due the network or the * peer application. * - * Note: local->uapsd_queues access is racy here. If the value is + * Note: ifmgd->uapsd_queues access is racy here. If the value is * changed via debugfs, user needs to reassociate manually to have * everything in sync. */ if ((ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) - && (local->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) + && (ifmgd->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) && skb_get_queue_mapping(tx->skb) == 0) return TX_CONTINUE; @@ -448,18 +448,23 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx) struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data; struct ieee80211_local *local = tx->local; - if (unlikely(!sta || - ieee80211_is_probe_resp(hdr->frame_control) || - ieee80211_is_auth(hdr->frame_control) || - ieee80211_is_assoc_resp(hdr->frame_control) || - ieee80211_is_reassoc_resp(hdr->frame_control))) + if (unlikely(!sta)) return TX_CONTINUE; if (unlikely((test_sta_flag(sta, WLAN_STA_PS_STA) || test_sta_flag(sta, WLAN_STA_PS_DRIVER)) && - !(info->flags & IEEE80211_TX_CTL_POLL_RESPONSE))) { + !(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER))) { int ac = skb_get_queue_mapping(tx->skb); + /* only deauth, disassoc and action are bufferable MMPDUs */ + if (ieee80211_is_mgmt(hdr->frame_control) && + !ieee80211_is_deauth(hdr->frame_control) && + !ieee80211_is_disassoc(hdr->frame_control) && + !ieee80211_is_action(hdr->frame_control)) { + info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; + return TX_CONTINUE; + } + #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG printk(KERN_DEBUG "STA %pM aid %d: PS buffer for AC %d\n", sta->sta.addr, sta->sta.aid, ac); @@ -625,7 +630,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) tx->local->hw.wiphy->frag_threshold); /* set up the tx rate control struct we give the RC algo */ - txrc.hw = local_to_hw(tx->local); + txrc.hw = &tx->local->hw; txrc.sband = sband; txrc.bss_conf = &tx->sdata->vif.bss_conf; txrc.skb = tx->skb; @@ -635,6 +640,9 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) txrc.max_rate_idx = -1; else txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1; + memcpy(txrc.rate_idx_mcs_mask, + tx->sdata->rc_rateidx_mcs_mask[tx->channel->band], + sizeof(txrc.rate_idx_mcs_mask)); txrc.bss = (tx->sdata->vif.type == NL80211_IFTYPE_AP || tx->sdata->vif.type == NL80211_IFTYPE_MESH_POINT || tx->sdata->vif.type == NL80211_IFTYPE_ADHOC); @@ -1057,6 +1065,7 @@ static bool ieee80211_tx_prep_agg(struct ieee80211_tx_data *tx, { bool queued = false; bool reset_agg_timer = false; + struct sk_buff *purge_skb = NULL; if (test_bit(HT_AGG_STATE_OPERATIONAL, &tid_tx->state)) { info->flags |= IEEE80211_TX_CTL_AMPDU; @@ -1098,8 +1107,13 @@ static bool ieee80211_tx_prep_agg(struct ieee80211_tx_data *tx, info->control.vif = &tx->sdata->vif; info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING; __skb_queue_tail(&tid_tx->pending, skb); + if (skb_queue_len(&tid_tx->pending) > STA_MAX_TX_BUFFER) + purge_skb = __skb_dequeue(&tid_tx->pending); } spin_unlock(&tx->sta->lock); + + if (purge_skb) + dev_kfree_skb(purge_skb); } /* reset session timer */ @@ -2203,7 +2217,8 @@ void ieee80211_tx_pending(unsigned long data) /* functions for drivers to get certain frames */ -static void ieee80211_beacon_add_tim(struct ieee80211_if_ap *bss, +static void ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata, + struct ieee80211_if_ap *bss, struct sk_buff *skb, struct beacon_data *beacon) { @@ -2220,7 +2235,7 @@ static void ieee80211_beacon_add_tim(struct ieee80211_if_ap *bss, IEEE80211_MAX_AID+1); if (bss->dtim_count == 0) - bss->dtim_count = beacon->dtim_period - 1; + bss->dtim_count = sdata->vif.bss_conf.dtim_period - 1; else bss->dtim_count--; @@ -2228,7 +2243,7 @@ static void ieee80211_beacon_add_tim(struct ieee80211_if_ap *bss, *pos++ = WLAN_EID_TIM; *pos++ = 4; *pos++ = bss->dtim_count; - *pos++ = beacon->dtim_period; + *pos++ = sdata->vif.bss_conf.dtim_period; if (bss->dtim_count == 0 && !skb_queue_empty(&bss->ps_bc_buf)) aid0 = 1; @@ -2321,12 +2336,14 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, * of the tim bitmap in mac80211 and the driver. */ if (local->tim_in_locked_section) { - ieee80211_beacon_add_tim(ap, skb, beacon); + ieee80211_beacon_add_tim(sdata, ap, skb, + beacon); } else { unsigned long flags; spin_lock_irqsave(&local->tim_lock, flags); - ieee80211_beacon_add_tim(ap, skb, beacon); + ieee80211_beacon_add_tim(sdata, ap, skb, + beacon); spin_unlock_irqrestore(&local->tim_lock, flags); } @@ -2431,6 +2448,8 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, txrc.max_rate_idx = -1; else txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1; + memcpy(txrc.rate_idx_mcs_mask, sdata->rc_rateidx_mcs_mask[band], + sizeof(txrc.rate_idx_mcs_mask)); txrc.bss = true; rate_control_get_rate(sdata, NULL, &txrc); diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 9919892575f4..32f7a3b3d43c 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -572,24 +572,40 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, size_t left = len; u8 *pos = start; bool calc_crc = filter != 0; + DECLARE_BITMAP(seen_elems, 256); + bitmap_zero(seen_elems, 256); memset(elems, 0, sizeof(*elems)); elems->ie_start = start; elems->total_len = len; while (left >= 2) { u8 id, elen; + bool elem_parse_failed; id = *pos++; elen = *pos++; left -= 2; - if (elen > left) + if (elen > left) { + elems->parse_error = true; break; + } + + if (id != WLAN_EID_VENDOR_SPECIFIC && + id != WLAN_EID_QUIET && + test_bit(id, seen_elems)) { + elems->parse_error = true; + left -= elen; + pos += elen; + continue; + } if (calc_crc && id < 64 && (filter & (1ULL << id))) crc = crc32_be(crc, pos - 2, elen + 2); + elem_parse_failed = false; + switch (id) { case WLAN_EID_SSID: elems->ssid = pos; @@ -615,7 +631,8 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, if (elen >= sizeof(struct ieee80211_tim_ie)) { elems->tim = (void *)pos; elems->tim_len = elen; - } + } else + elem_parse_failed = true; break; case WLAN_EID_IBSS_PARAMS: elems->ibss_params = pos; @@ -664,10 +681,14 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, case WLAN_EID_HT_CAPABILITY: if (elen >= sizeof(struct ieee80211_ht_cap)) elems->ht_cap_elem = (void *)pos; + else + elem_parse_failed = true; break; case WLAN_EID_HT_INFORMATION: if (elen >= sizeof(struct ieee80211_ht_info)) elems->ht_info_elem = (void *)pos; + else + elem_parse_failed = true; break; case WLAN_EID_MESH_ID: elems->mesh_id = pos; @@ -676,6 +697,8 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, case WLAN_EID_MESH_CONFIG: if (elen >= sizeof(struct ieee80211_meshconf_ie)) elems->mesh_config = (void *)pos; + else + elem_parse_failed = true; break; case WLAN_EID_PEER_MGMT: elems->peering = pos; @@ -696,6 +719,8 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, case WLAN_EID_RANN: if (elen >= sizeof(struct ieee80211_rann_ie)) elems->rann = (void *)pos; + else + elem_parse_failed = true; break; case WLAN_EID_CHANNEL_SWITCH: elems->ch_switch_elem = pos; @@ -724,10 +749,18 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, break; } + if (elem_parse_failed) + elems->parse_error = true; + else + set_bit(id, seen_elems); + left -= elen; pos += elen; } + if (left != 0) + elems->parse_error = true; + return crc; } @@ -737,7 +770,8 @@ void ieee802_11_parse_elems(u8 *start, size_t len, ieee802_11_parse_elems_crc(start, len, elems, 0, 0); } -void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata) +void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, + bool bss_notify) { struct ieee80211_local *local = sdata->local; struct ieee80211_tx_queue_params qparam; @@ -753,7 +787,7 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata) use_11b = (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) && !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); - for (queue = 0; queue < local_to_hw(local)->queues; queue++) { + for (queue = 0; queue < local->hw.queues; queue++) { /* Set defaults according to 802.11-2007 Table 7-37 */ aCWmax = 1023; if (use_11b) @@ -807,7 +841,9 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata) if (sdata->vif.type != NL80211_IFTYPE_MONITOR) { sdata->vif.bss_conf.qos = sdata->vif.type != NL80211_IFTYPE_STATION; - ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); + if (bss_notify) + ieee80211_bss_info_change_notify(sdata, + BSS_CHANGED_QOS); } } @@ -829,7 +865,7 @@ void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, else sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; - ieee80211_set_wmm_default(sdata); + ieee80211_set_wmm_default(sdata, true); } u32 ieee80211_mandatory_rates(struct ieee80211_local *local, @@ -862,8 +898,8 @@ u32 ieee80211_mandatory_rates(struct ieee80211_local *local, void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, u16 transaction, u16 auth_alg, - u8 *extra, size_t extra_len, const u8 *bssid, - const u8 *key, u8 key_len, u8 key_idx) + u8 *extra, size_t extra_len, const u8 *da, + const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx) { struct ieee80211_local *local = sdata->local; struct sk_buff *skb; @@ -881,7 +917,7 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, memset(mgmt, 0, 24 + 6); mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH); - memcpy(mgmt->da, bssid, ETH_ALEN); + memcpy(mgmt->da, da, ETH_ALEN); memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); memcpy(mgmt->bssid, bssid, ETH_ALEN); mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); @@ -1185,13 +1221,12 @@ int ieee80211_reconfig(struct ieee80211_local *local) mutex_lock(&local->sta_mtx); list_for_each_entry(sta, &local->sta_list, list) { if (sta->uploaded) { - sdata = sta->sdata; - if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) - sdata = container_of(sdata->bss, - struct ieee80211_sub_if_data, - u.ap); + enum ieee80211_sta_state state; - WARN_ON(drv_sta_add(local, sdata, &sta->sta)); + for (state = IEEE80211_STA_NOTEXIST; + state < sta->sta_state - 1; state++) + WARN_ON(drv_sta_state(local, sta->sdata, sta, + state, state + 1)); } } mutex_unlock(&local->sta_mtx); @@ -1272,6 +1307,21 @@ int ieee80211_reconfig(struct ieee80211_local *local) ieee80211_recalc_ps(local, -1); /* + * The sta might be in psm against the ap (e.g. because + * this was the state before a hw restart), so we + * explicitly send a null packet in order to make sure + * it'll sync against the ap (and get out of psm). + */ + if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { + list_for_each_entry(sdata, &local->interfaces, list) { + if (sdata->vif.type != NL80211_IFTYPE_STATION) + continue; + + ieee80211_send_nullfunc(local, sdata, 0); + } + } + + /* * Clear the WLAN_STA_BLOCK_BA flag so new aggregation * sessions can be established after a resume. * diff --git a/net/mac80211/wep.c b/net/mac80211/wep.c index 68ad351479df..7aa31bbfaa3b 100644 --- a/net/mac80211/wep.c +++ b/net/mac80211/wep.c @@ -263,16 +263,14 @@ static int ieee80211_wep_decrypt(struct ieee80211_local *local, } -bool ieee80211_wep_is_weak_iv(struct sk_buff *skb, struct ieee80211_key *key) +static bool ieee80211_wep_is_weak_iv(struct sk_buff *skb, + struct ieee80211_key *key) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; unsigned int hdrlen; u8 *ivpos; u32 iv; - if (!ieee80211_has_protected(hdr->frame_control)) - return false; - hdrlen = ieee80211_hdrlen(hdr->frame_control); ivpos = skb->data + hdrlen; iv = (ivpos[0] << 16) | (ivpos[1] << 8) | ivpos[2]; @@ -286,18 +284,27 @@ ieee80211_crypto_wep_decrypt(struct ieee80211_rx_data *rx) struct sk_buff *skb = rx->skb; struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb); struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + __le16 fc = hdr->frame_control; - if (!ieee80211_is_data(hdr->frame_control) && - !ieee80211_is_auth(hdr->frame_control)) + if (!ieee80211_is_data(fc) && !ieee80211_is_auth(fc)) return RX_CONTINUE; if (!(status->flag & RX_FLAG_DECRYPTED)) { + if (skb_linearize(rx->skb)) + return RX_DROP_UNUSABLE; + if (rx->sta && ieee80211_wep_is_weak_iv(rx->skb, rx->key)) + rx->sta->wep_weak_iv_count++; if (ieee80211_wep_decrypt(rx->local, rx->skb, rx->key)) return RX_DROP_UNUSABLE; } else if (!(status->flag & RX_FLAG_IV_STRIPPED)) { + if (!pskb_may_pull(rx->skb, ieee80211_hdrlen(fc) + WEP_IV_LEN)) + return RX_DROP_UNUSABLE; + if (rx->sta && ieee80211_wep_is_weak_iv(rx->skb, rx->key)) + rx->sta->wep_weak_iv_count++; ieee80211_wep_remove_iv(rx->local, rx->skb, rx->key); /* remove ICV */ - skb_trim(rx->skb, rx->skb->len - WEP_ICV_LEN); + if (pskb_trim(rx->skb, rx->skb->len - WEP_ICV_LEN)) + return RX_DROP_UNUSABLE; } return RX_CONTINUE; diff --git a/net/mac80211/wep.h b/net/mac80211/wep.h index 01e54840a628..9615749d1f65 100644 --- a/net/mac80211/wep.h +++ b/net/mac80211/wep.h @@ -25,7 +25,6 @@ int ieee80211_wep_encrypt(struct ieee80211_local *local, const u8 *key, int keylen, int keyidx); int ieee80211_wep_decrypt_data(struct crypto_cipher *tfm, u8 *rc4key, size_t klen, u8 *data, size_t data_len); -bool ieee80211_wep_is_weak_iv(struct sk_buff *skb, struct ieee80211_key *key); ieee80211_rx_result ieee80211_crypto_wep_decrypt(struct ieee80211_rx_data *rx); diff --git a/net/mac80211/work.c b/net/mac80211/work.c index c6dd01a05291..c6e230efa049 100644 --- a/net/mac80211/work.c +++ b/net/mac80211/work.c @@ -27,16 +27,9 @@ #include "rate.h" #include "driver-ops.h" -#define IEEE80211_AUTH_TIMEOUT (HZ / 5) -#define IEEE80211_AUTH_MAX_TRIES 3 -#define IEEE80211_ASSOC_TIMEOUT (HZ / 5) -#define IEEE80211_ASSOC_MAX_TRIES 3 - enum work_action { - WORK_ACT_MISMATCH, WORK_ACT_NONE, WORK_ACT_TIMEOUT, - WORK_ACT_DONE, }; @@ -71,464 +64,6 @@ void free_work(struct ieee80211_work *wk) kfree_rcu(wk, rcu_head); } -static int ieee80211_compatible_rates(const u8 *supp_rates, int supp_rates_len, - struct ieee80211_supported_band *sband, - u32 *rates) -{ - int i, j, count; - *rates = 0; - count = 0; - for (i = 0; i < supp_rates_len; i++) { - int rate = (supp_rates[i] & 0x7F) * 5; - - for (j = 0; j < sband->n_bitrates; j++) - if (sband->bitrates[j].bitrate == rate) { - *rates |= BIT(j); - count++; - break; - } - } - - return count; -} - -/* frame sending functions */ - -static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, - struct sk_buff *skb, const u8 *ht_info_ie, - struct ieee80211_supported_band *sband, - struct ieee80211_channel *channel, - enum ieee80211_smps_mode smps) -{ - struct ieee80211_ht_info *ht_info; - u8 *pos; - u32 flags = channel->flags; - u16 cap; - struct ieee80211_sta_ht_cap ht_cap; - - BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); - - if (!sband->ht_cap.ht_supported) - return; - - if (!ht_info_ie) - return; - - if (ht_info_ie[1] < sizeof(struct ieee80211_ht_info)) - return; - - memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); - ieee80211_apply_htcap_overrides(sdata, &ht_cap); - - ht_info = (struct ieee80211_ht_info *)(ht_info_ie + 2); - - /* determine capability flags */ - cap = ht_cap.cap; - - switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { - case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: - if (flags & IEEE80211_CHAN_NO_HT40PLUS) { - cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; - cap &= ~IEEE80211_HT_CAP_SGI_40; - } - break; - case IEEE80211_HT_PARAM_CHA_SEC_BELOW: - if (flags & IEEE80211_CHAN_NO_HT40MINUS) { - cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; - cap &= ~IEEE80211_HT_CAP_SGI_40; - } - break; - } - - /* set SM PS mode properly */ - cap &= ~IEEE80211_HT_CAP_SM_PS; - switch (smps) { - case IEEE80211_SMPS_AUTOMATIC: - case IEEE80211_SMPS_NUM_MODES: - WARN_ON(1); - case IEEE80211_SMPS_OFF: - cap |= WLAN_HT_CAP_SM_PS_DISABLED << - IEEE80211_HT_CAP_SM_PS_SHIFT; - break; - case IEEE80211_SMPS_STATIC: - cap |= WLAN_HT_CAP_SM_PS_STATIC << - IEEE80211_HT_CAP_SM_PS_SHIFT; - break; - case IEEE80211_SMPS_DYNAMIC: - cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << - IEEE80211_HT_CAP_SM_PS_SHIFT; - break; - } - - /* reserve and fill IE */ - pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); - ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); -} - -static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, - struct ieee80211_work *wk) -{ - struct ieee80211_local *local = sdata->local; - struct sk_buff *skb; - struct ieee80211_mgmt *mgmt; - u8 *pos, qos_info; - size_t offset = 0, noffset; - int i, count, rates_len, supp_rates_len; - u16 capab; - struct ieee80211_supported_band *sband; - u32 rates = 0; - - sband = local->hw.wiphy->bands[wk->chan->band]; - - if (wk->assoc.supp_rates_len) { - /* - * Get all rates supported by the device and the AP as - * some APs don't like getting a superset of their rates - * in the association request (e.g. D-Link DAP 1353 in - * b-only mode)... - */ - rates_len = ieee80211_compatible_rates(wk->assoc.supp_rates, - wk->assoc.supp_rates_len, - sband, &rates); - } else { - /* - * In case AP not provide any supported rates information - * before association, we send information element(s) with - * all rates that we support. - */ - rates = ~0; - rates_len = sband->n_bitrates; - } - - skb = alloc_skb(local->hw.extra_tx_headroom + - sizeof(*mgmt) + /* bit too much but doesn't matter */ - 2 + wk->assoc.ssid_len + /* SSID */ - 4 + rates_len + /* (extended) rates */ - 4 + /* power capability */ - 2 + 2 * sband->n_channels + /* supported channels */ - 2 + sizeof(struct ieee80211_ht_cap) + /* HT */ - wk->ie_len + /* extra IEs */ - 9, /* WMM */ - GFP_KERNEL); - if (!skb) - return; - - skb_reserve(skb, local->hw.extra_tx_headroom); - - capab = WLAN_CAPABILITY_ESS; - - if (sband->band == IEEE80211_BAND_2GHZ) { - 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; - } - - if (wk->assoc.capability & WLAN_CAPABILITY_PRIVACY) - capab |= WLAN_CAPABILITY_PRIVACY; - - if ((wk->assoc.capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && - (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) - capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; - - mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); - memset(mgmt, 0, 24); - memcpy(mgmt->da, wk->filter_ta, ETH_ALEN); - memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); - memcpy(mgmt->bssid, wk->filter_ta, ETH_ALEN); - - if (!is_zero_ether_addr(wk->assoc.prev_bssid)) { - skb_put(skb, 10); - mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | - IEEE80211_STYPE_REASSOC_REQ); - mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); - mgmt->u.reassoc_req.listen_interval = - cpu_to_le16(local->hw.conf.listen_interval); - memcpy(mgmt->u.reassoc_req.current_ap, wk->assoc.prev_bssid, - ETH_ALEN); - } else { - skb_put(skb, 4); - mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | - IEEE80211_STYPE_ASSOC_REQ); - mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); - mgmt->u.assoc_req.listen_interval = - cpu_to_le16(local->hw.conf.listen_interval); - } - - /* SSID */ - pos = skb_put(skb, 2 + wk->assoc.ssid_len); - *pos++ = WLAN_EID_SSID; - *pos++ = wk->assoc.ssid_len; - memcpy(pos, wk->assoc.ssid, wk->assoc.ssid_len); - - /* add all rates which were marked to be used above */ - supp_rates_len = rates_len; - if (supp_rates_len > 8) - supp_rates_len = 8; - - pos = skb_put(skb, supp_rates_len + 2); - *pos++ = WLAN_EID_SUPP_RATES; - *pos++ = supp_rates_len; - - count = 0; - for (i = 0; i < sband->n_bitrates; i++) { - if (BIT(i) & rates) { - int rate = sband->bitrates[i].bitrate; - *pos++ = (u8) (rate / 5); - if (++count == 8) - break; - } - } - - if (rates_len > count) { - pos = skb_put(skb, rates_len - count + 2); - *pos++ = WLAN_EID_EXT_SUPP_RATES; - *pos++ = rates_len - count; - - for (i++; i < sband->n_bitrates; i++) { - if (BIT(i) & rates) { - int rate = sband->bitrates[i].bitrate; - *pos++ = (u8) (rate / 5); - } - } - } - - if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { - /* 1. power capabilities */ - pos = skb_put(skb, 4); - *pos++ = WLAN_EID_PWR_CAPABILITY; - *pos++ = 2; - *pos++ = 0; /* min tx power */ - *pos++ = wk->chan->max_power; /* max tx power */ - - /* 2. supported channels */ - /* TODO: get this in reg domain format */ - pos = skb_put(skb, 2 * sband->n_channels + 2); - *pos++ = WLAN_EID_SUPPORTED_CHANNELS; - *pos++ = 2 * sband->n_channels; - for (i = 0; i < sband->n_channels; i++) { - *pos++ = ieee80211_frequency_to_channel( - sband->channels[i].center_freq); - *pos++ = 1; /* one channel in the subband*/ - } - } - - /* if present, add any custom IEs that go before HT */ - if (wk->ie_len && wk->ie) { - static const u8 before_ht[] = { - WLAN_EID_SSID, - WLAN_EID_SUPP_RATES, - WLAN_EID_EXT_SUPP_RATES, - WLAN_EID_PWR_CAPABILITY, - WLAN_EID_SUPPORTED_CHANNELS, - WLAN_EID_RSN, - WLAN_EID_QOS_CAPA, - WLAN_EID_RRM_ENABLED_CAPABILITIES, - WLAN_EID_MOBILITY_DOMAIN, - WLAN_EID_SUPPORTED_REGULATORY_CLASSES, - }; - noffset = ieee80211_ie_split(wk->ie, wk->ie_len, - before_ht, ARRAY_SIZE(before_ht), - offset); - pos = skb_put(skb, noffset - offset); - memcpy(pos, wk->ie + offset, noffset - offset); - offset = noffset; - } - - if (wk->assoc.use_11n && wk->assoc.wmm_used && - local->hw.queues >= 4) - ieee80211_add_ht_ie(sdata, skb, wk->assoc.ht_information_ie, - sband, wk->chan, wk->assoc.smps); - - /* if present, add any custom non-vendor IEs that go after HT */ - if (wk->ie_len && wk->ie) { - noffset = ieee80211_ie_split_vendor(wk->ie, wk->ie_len, - offset); - pos = skb_put(skb, noffset - offset); - memcpy(pos, wk->ie + offset, noffset - offset); - offset = noffset; - } - - if (wk->assoc.wmm_used && local->hw.queues >= 4) { - if (wk->assoc.uapsd_used) { - qos_info = local->uapsd_queues; - qos_info |= (local->uapsd_max_sp_len << - IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); - } else { - qos_info = 0; - } - - pos = skb_put(skb, 9); - *pos++ = WLAN_EID_VENDOR_SPECIFIC; - *pos++ = 7; /* len */ - *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ - *pos++ = 0x50; - *pos++ = 0xf2; - *pos++ = 2; /* WME */ - *pos++ = 0; /* WME info */ - *pos++ = 1; /* WME ver */ - *pos++ = qos_info; - } - - /* add any remaining custom (i.e. vendor specific here) IEs */ - if (wk->ie_len && wk->ie) { - noffset = wk->ie_len; - pos = skb_put(skb, noffset - offset); - memcpy(pos, wk->ie + offset, noffset - offset); - } - - IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; - ieee80211_tx_skb(sdata, skb); -} - -static void ieee80211_remove_auth_bss(struct ieee80211_local *local, - struct ieee80211_work *wk) -{ - struct cfg80211_bss *cbss; - u16 capa_val = WLAN_CAPABILITY_ESS; - - if (wk->probe_auth.privacy) - capa_val |= WLAN_CAPABILITY_PRIVACY; - - cbss = cfg80211_get_bss(local->hw.wiphy, wk->chan, wk->filter_ta, - wk->probe_auth.ssid, wk->probe_auth.ssid_len, - WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY, - capa_val); - if (!cbss) - return; - - cfg80211_unlink_bss(local->hw.wiphy, cbss); - cfg80211_put_bss(cbss); -} - -static enum work_action __must_check -ieee80211_direct_probe(struct ieee80211_work *wk) -{ - struct ieee80211_sub_if_data *sdata = wk->sdata; - struct ieee80211_local *local = sdata->local; - - if (!wk->probe_auth.synced) { - int ret = drv_tx_sync(local, sdata, wk->filter_ta, - IEEE80211_TX_SYNC_AUTH); - if (ret) - return WORK_ACT_TIMEOUT; - } - wk->probe_auth.synced = true; - - wk->probe_auth.tries++; - if (wk->probe_auth.tries > IEEE80211_AUTH_MAX_TRIES) { - printk(KERN_DEBUG "%s: direct probe to %pM timed out\n", - sdata->name, wk->filter_ta); - - /* - * Most likely AP is not in the range so remove the - * bss struct for that AP. - */ - ieee80211_remove_auth_bss(local, wk); - - return WORK_ACT_TIMEOUT; - } - - printk(KERN_DEBUG "%s: direct probe to %pM (try %d/%i)\n", - sdata->name, wk->filter_ta, wk->probe_auth.tries, - IEEE80211_AUTH_MAX_TRIES); - - /* - * 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, wk->probe_auth.ssid, - wk->probe_auth.ssid_len, NULL, 0, - (u32) -1, true, false); - - wk->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; - run_again(local, wk->timeout); - - return WORK_ACT_NONE; -} - - -static enum work_action __must_check -ieee80211_authenticate(struct ieee80211_work *wk) -{ - struct ieee80211_sub_if_data *sdata = wk->sdata; - struct ieee80211_local *local = sdata->local; - - if (!wk->probe_auth.synced) { - int ret = drv_tx_sync(local, sdata, wk->filter_ta, - IEEE80211_TX_SYNC_AUTH); - if (ret) - return WORK_ACT_TIMEOUT; - } - wk->probe_auth.synced = true; - - wk->probe_auth.tries++; - if (wk->probe_auth.tries > IEEE80211_AUTH_MAX_TRIES) { - printk(KERN_DEBUG "%s: authentication with %pM" - " timed out\n", sdata->name, wk->filter_ta); - - /* - * Most likely AP is not in the range so remove the - * bss struct for that AP. - */ - ieee80211_remove_auth_bss(local, wk); - - return WORK_ACT_TIMEOUT; - } - - printk(KERN_DEBUG "%s: authenticate with %pM (try %d)\n", - sdata->name, wk->filter_ta, wk->probe_auth.tries); - - ieee80211_send_auth(sdata, 1, wk->probe_auth.algorithm, wk->ie, - wk->ie_len, wk->filter_ta, NULL, 0, 0); - wk->probe_auth.transaction = 2; - - wk->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; - run_again(local, wk->timeout); - - return WORK_ACT_NONE; -} - -static enum work_action __must_check -ieee80211_associate(struct ieee80211_work *wk) -{ - struct ieee80211_sub_if_data *sdata = wk->sdata; - struct ieee80211_local *local = sdata->local; - - if (!wk->assoc.synced) { - int ret = drv_tx_sync(local, sdata, wk->filter_ta, - IEEE80211_TX_SYNC_ASSOC); - if (ret) - return WORK_ACT_TIMEOUT; - } - wk->assoc.synced = true; - - wk->assoc.tries++; - if (wk->assoc.tries > IEEE80211_ASSOC_MAX_TRIES) { - printk(KERN_DEBUG "%s: association with %pM" - " timed out\n", - sdata->name, wk->filter_ta); - - /* - * Most likely AP is not in the range so remove the - * bss struct for that AP. - */ - if (wk->assoc.bss) - cfg80211_unlink_bss(local->hw.wiphy, wk->assoc.bss); - - return WORK_ACT_TIMEOUT; - } - - printk(KERN_DEBUG "%s: associate with %pM (try %d)\n", - sdata->name, wk->filter_ta, wk->assoc.tries); - ieee80211_send_assoc(sdata, wk); - - wk->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; - run_again(local, wk->timeout); - - return WORK_ACT_NONE; -} - static enum work_action __must_check ieee80211_remain_on_channel_timeout(struct ieee80211_work *wk) { @@ -568,300 +103,6 @@ ieee80211_offchannel_tx(struct ieee80211_work *wk) return WORK_ACT_TIMEOUT; } -static enum work_action __must_check -ieee80211_assoc_beacon_wait(struct ieee80211_work *wk) -{ - if (wk->started) - return WORK_ACT_TIMEOUT; - - /* - * Wait up to one beacon interval ... - * should this be more if we miss one? - */ - printk(KERN_DEBUG "%s: waiting for beacon from %pM\n", - wk->sdata->name, wk->filter_ta); - wk->timeout = TU_TO_EXP_TIME(wk->assoc.bss->beacon_interval); - return WORK_ACT_NONE; -} - -static void ieee80211_auth_challenge(struct ieee80211_work *wk, - struct ieee80211_mgmt *mgmt, - size_t len) -{ - struct ieee80211_sub_if_data *sdata = wk->sdata; - u8 *pos; - struct ieee802_11_elems elems; - - pos = mgmt->u.auth.variable; - ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); - if (!elems.challenge) - return; - ieee80211_send_auth(sdata, 3, wk->probe_auth.algorithm, - elems.challenge - 2, elems.challenge_len + 2, - wk->filter_ta, wk->probe_auth.key, - wk->probe_auth.key_len, wk->probe_auth.key_idx); - wk->probe_auth.transaction = 4; -} - -static enum work_action __must_check -ieee80211_rx_mgmt_auth(struct ieee80211_work *wk, - struct ieee80211_mgmt *mgmt, size_t len) -{ - u16 auth_alg, auth_transaction, status_code; - - if (wk->type != IEEE80211_WORK_AUTH) - return WORK_ACT_MISMATCH; - - if (len < 24 + 6) - return WORK_ACT_NONE; - - auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); - auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); - status_code = le16_to_cpu(mgmt->u.auth.status_code); - - if (auth_alg != wk->probe_auth.algorithm || - auth_transaction != wk->probe_auth.transaction) - return WORK_ACT_NONE; - - if (status_code != WLAN_STATUS_SUCCESS) { - printk(KERN_DEBUG "%s: %pM denied authentication (status %d)\n", - wk->sdata->name, mgmt->sa, status_code); - return WORK_ACT_DONE; - } - - switch (wk->probe_auth.algorithm) { - case WLAN_AUTH_OPEN: - case WLAN_AUTH_LEAP: - case WLAN_AUTH_FT: - break; - case WLAN_AUTH_SHARED_KEY: - if (wk->probe_auth.transaction != 4) { - ieee80211_auth_challenge(wk, mgmt, len); - /* need another frame */ - return WORK_ACT_NONE; - } - break; - default: - WARN_ON(1); - return WORK_ACT_NONE; - } - - printk(KERN_DEBUG "%s: authenticated\n", wk->sdata->name); - return WORK_ACT_DONE; -} - -static enum work_action __must_check -ieee80211_rx_mgmt_assoc_resp(struct ieee80211_work *wk, - struct ieee80211_mgmt *mgmt, size_t len, - bool reassoc) -{ - struct ieee80211_sub_if_data *sdata = wk->sdata; - struct ieee80211_local *local = sdata->local; - u16 capab_info, status_code, aid; - struct ieee802_11_elems elems; - u8 *pos; - - if (wk->type != IEEE80211_WORK_ASSOC) - return WORK_ACT_MISMATCH; - - /* - * AssocResp and ReassocResp have identical structure, so process both - * of them in this function. - */ - - if (len < 24 + 6) - return WORK_ACT_NONE; - - capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); - status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); - aid = le16_to_cpu(mgmt->u.assoc_resp.aid); - - printk(KERN_DEBUG "%s: RX %sssocResp from %pM (capab=0x%x " - "status=%d aid=%d)\n", - sdata->name, reassoc ? "Rea" : "A", mgmt->sa, - capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); - - pos = mgmt->u.assoc_resp.variable; - ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); - - if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && - elems.timeout_int && elems.timeout_int_len == 5 && - elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) { - u32 tu, ms; - tu = get_unaligned_le32(elems.timeout_int + 1); - ms = tu * 1024 / 1000; - printk(KERN_DEBUG "%s: %pM rejected association temporarily; " - "comeback duration %u TU (%u ms)\n", - sdata->name, mgmt->sa, tu, ms); - wk->timeout = jiffies + msecs_to_jiffies(ms); - if (ms > IEEE80211_ASSOC_TIMEOUT) - run_again(local, wk->timeout); - return WORK_ACT_NONE; - } - - if (status_code != WLAN_STATUS_SUCCESS) - printk(KERN_DEBUG "%s: %pM denied association (code=%d)\n", - sdata->name, mgmt->sa, status_code); - else - printk(KERN_DEBUG "%s: associated\n", sdata->name); - - return WORK_ACT_DONE; -} - -static enum work_action __must_check -ieee80211_rx_mgmt_probe_resp(struct ieee80211_work *wk, - struct ieee80211_mgmt *mgmt, size_t len, - struct ieee80211_rx_status *rx_status) -{ - struct ieee80211_sub_if_data *sdata = wk->sdata; - struct ieee80211_local *local = sdata->local; - size_t baselen; - - ASSERT_WORK_MTX(local); - - if (wk->type != IEEE80211_WORK_DIRECT_PROBE) - return WORK_ACT_MISMATCH; - - if (len < 24 + 12) - return WORK_ACT_NONE; - - baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; - if (baselen > len) - return WORK_ACT_NONE; - - printk(KERN_DEBUG "%s: direct probe responded\n", sdata->name); - return WORK_ACT_DONE; -} - -static enum work_action __must_check -ieee80211_rx_mgmt_beacon(struct ieee80211_work *wk, - struct ieee80211_mgmt *mgmt, size_t len) -{ - struct ieee80211_sub_if_data *sdata = wk->sdata; - struct ieee80211_local *local = sdata->local; - - ASSERT_WORK_MTX(local); - - if (wk->type != IEEE80211_WORK_ASSOC_BEACON_WAIT) - return WORK_ACT_MISMATCH; - - if (len < 24 + 12) - return WORK_ACT_NONE; - - printk(KERN_DEBUG "%s: beacon received\n", sdata->name); - return WORK_ACT_DONE; -} - -static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local, - struct sk_buff *skb) -{ - struct ieee80211_rx_status *rx_status; - struct ieee80211_mgmt *mgmt; - struct ieee80211_work *wk; - enum work_action rma = WORK_ACT_NONE; - u16 fc; - - rx_status = (struct ieee80211_rx_status *) skb->cb; - mgmt = (struct ieee80211_mgmt *) skb->data; - fc = le16_to_cpu(mgmt->frame_control); - - mutex_lock(&local->mtx); - - list_for_each_entry(wk, &local->work_list, list) { - const u8 *bssid = NULL; - - switch (wk->type) { - case IEEE80211_WORK_DIRECT_PROBE: - case IEEE80211_WORK_AUTH: - case IEEE80211_WORK_ASSOC: - case IEEE80211_WORK_ASSOC_BEACON_WAIT: - bssid = wk->filter_ta; - break; - default: - continue; - } - - /* - * Before queuing, we already verified mgmt->sa, - * so this is needed just for matching. - */ - if (compare_ether_addr(bssid, mgmt->bssid)) - continue; - - switch (fc & IEEE80211_FCTL_STYPE) { - case IEEE80211_STYPE_BEACON: - rma = ieee80211_rx_mgmt_beacon(wk, mgmt, skb->len); - break; - case IEEE80211_STYPE_PROBE_RESP: - rma = ieee80211_rx_mgmt_probe_resp(wk, mgmt, skb->len, - rx_status); - break; - case IEEE80211_STYPE_AUTH: - rma = ieee80211_rx_mgmt_auth(wk, mgmt, skb->len); - break; - case IEEE80211_STYPE_ASSOC_RESP: - rma = ieee80211_rx_mgmt_assoc_resp(wk, mgmt, - skb->len, false); - break; - case IEEE80211_STYPE_REASSOC_RESP: - rma = ieee80211_rx_mgmt_assoc_resp(wk, mgmt, - skb->len, true); - break; - default: - WARN_ON(1); - rma = WORK_ACT_NONE; - } - - /* - * We've either received an unexpected frame, or we have - * multiple work items and need to match the frame to the - * right one. - */ - if (rma == WORK_ACT_MISMATCH) - continue; - - /* - * We've processed this frame for that work, so it can't - * belong to another work struct. - * NB: this is also required for correctness for 'rma'! - */ - break; - } - - switch (rma) { - case WORK_ACT_MISMATCH: - /* ignore this unmatched frame */ - break; - case WORK_ACT_NONE: - break; - case WORK_ACT_DONE: - list_del_rcu(&wk->list); - break; - default: - WARN(1, "unexpected: %d", rma); - } - - mutex_unlock(&local->mtx); - - if (rma != WORK_ACT_DONE) - goto out; - - switch (wk->done(wk, skb)) { - case WORK_DONE_DESTROY: - free_work(wk); - break; - case WORK_DONE_REQUEUE: - synchronize_rcu(); - wk->started = false; /* restart */ - mutex_lock(&local->mtx); - list_add_tail(&wk->list, &local->work_list); - mutex_unlock(&local->mtx); - } - - out: - kfree_skb(skb); -} - static void ieee80211_work_timer(unsigned long data) { struct ieee80211_local *local = (void *) data; @@ -876,7 +117,6 @@ static void ieee80211_work_work(struct work_struct *work) { struct ieee80211_local *local = container_of(work, struct ieee80211_local, work_work); - struct sk_buff *skb; struct ieee80211_work *wk, *tmp; LIST_HEAD(free_work); enum work_action rma; @@ -892,10 +132,6 @@ static void ieee80211_work_work(struct work_struct *work) if (WARN(local->suspended, "work scheduled while going to suspend\n")) return; - /* first process frames to avoid timing out while a frame is pending */ - while ((skb = skb_dequeue(&local->work_skb_queue))) - ieee80211_work_rx_queued_mgmt(local, skb); - mutex_lock(&local->mtx); ieee80211_recalc_idle(local); @@ -946,24 +182,12 @@ static void ieee80211_work_work(struct work_struct *work) case IEEE80211_WORK_ABORT: rma = WORK_ACT_TIMEOUT; break; - case IEEE80211_WORK_DIRECT_PROBE: - rma = ieee80211_direct_probe(wk); - break; - case IEEE80211_WORK_AUTH: - rma = ieee80211_authenticate(wk); - break; - case IEEE80211_WORK_ASSOC: - rma = ieee80211_associate(wk); - break; case IEEE80211_WORK_REMAIN_ON_CHANNEL: rma = ieee80211_remain_on_channel_timeout(wk); break; case IEEE80211_WORK_OFFCHANNEL_TX: rma = ieee80211_offchannel_tx(wk); break; - case IEEE80211_WORK_ASSOC_BEACON_WAIT: - rma = ieee80211_assoc_beacon_wait(wk); - break; } wk->started = started; @@ -1051,7 +275,6 @@ void ieee80211_work_init(struct ieee80211_local *local) setup_timer(&local->work_timer, ieee80211_work_timer, (unsigned long)local); INIT_WORK(&local->work_work, ieee80211_work_work); - skb_queue_head_init(&local->work_skb_queue); } void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata) @@ -1085,43 +308,6 @@ void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata) mutex_unlock(&local->mtx); } -ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata, - struct sk_buff *skb) -{ - struct ieee80211_local *local = sdata->local; - struct ieee80211_mgmt *mgmt; - struct ieee80211_work *wk; - u16 fc; - - if (skb->len < 24) - return RX_DROP_MONITOR; - - mgmt = (struct ieee80211_mgmt *) skb->data; - fc = le16_to_cpu(mgmt->frame_control); - - list_for_each_entry_rcu(wk, &local->work_list, list) { - if (sdata != wk->sdata) - continue; - if (compare_ether_addr(wk->filter_ta, mgmt->sa)) - continue; - if (compare_ether_addr(wk->filter_ta, mgmt->bssid)) - continue; - - switch (fc & IEEE80211_FCTL_STYPE) { - case IEEE80211_STYPE_AUTH: - case IEEE80211_STYPE_PROBE_RESP: - case IEEE80211_STYPE_ASSOC_RESP: - case IEEE80211_STYPE_REASSOC_RESP: - case IEEE80211_STYPE_BEACON: - skb_queue_tail(&local->work_skb_queue, skb); - ieee80211_queue_work(&local->hw, &local->work_work); - return RX_QUEUED; - } - } - - return RX_CONTINUE; -} - static enum work_done_result ieee80211_remain_done(struct ieee80211_work *wk, struct sk_buff *skb) { diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c index b758350919ff..0ae23c60968c 100644 --- a/net/mac80211/wpa.c +++ b/net/mac80211/wpa.c @@ -138,6 +138,10 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx) if (skb->len < hdrlen + MICHAEL_MIC_LEN) return RX_DROP_UNUSABLE; + if (skb_linearize(rx->skb)) + return RX_DROP_UNUSABLE; + hdr = (void *)skb->data; + data = skb->data + hdrlen; data_len = skb->len - hdrlen - MICHAEL_MIC_LEN; key = &rx->key->conf.key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]; @@ -253,6 +257,11 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx) if (!rx->sta || skb->len - hdrlen < 12) return RX_DROP_UNUSABLE; + /* it may be possible to optimize this a bit more */ + if (skb_linearize(rx->skb)) + return RX_DROP_UNUSABLE; + hdr = (void *)skb->data; + /* * Let TKIP code verify IV, but skip decryption. * In the case where hardware checks the IV as well, @@ -484,6 +493,14 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx) if (!rx->sta || data_len < 0) return RX_DROP_UNUSABLE; + if (status->flag & RX_FLAG_DECRYPTED) { + if (!pskb_may_pull(rx->skb, hdrlen + CCMP_HDR_LEN)) + return RX_DROP_UNUSABLE; + } else { + if (skb_linearize(rx->skb)) + return RX_DROP_UNUSABLE; + } + ccmp_hdr2pn(pn, skb->data + hdrlen); queue = rx->security_idx; @@ -509,7 +526,8 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx) memcpy(key->u.ccmp.rx_pn[queue], pn, CCMP_PN_LEN); /* Remove CCMP header and MIC */ - skb_trim(skb, skb->len - CCMP_MIC_LEN); + if (pskb_trim(skb, skb->len - CCMP_MIC_LEN)) + return RX_DROP_UNUSABLE; memmove(skb->data + CCMP_HDR_LEN, skb->data, hdrlen); skb_pull(skb, CCMP_HDR_LEN); @@ -609,6 +627,8 @@ ieee80211_crypto_aes_cmac_decrypt(struct ieee80211_rx_data *rx) if (!ieee80211_is_mgmt(hdr->frame_control)) return RX_CONTINUE; + /* management frames are already linear */ + if (skb->len < 24 + sizeof(*mmie)) return RX_DROP_UNUSABLE; |