diff options
Diffstat (limited to 'net/mac80211/mlme.c')
-rw-r--r-- | net/mac80211/mlme.c | 298 |
1 files changed, 160 insertions, 138 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 0839c4e8fd2e..b6c163ac22da 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -478,6 +478,39 @@ static void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, } } +void ieee80211_enable_dyn_ps(struct ieee80211_vif *vif) +{ + struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); + struct ieee80211_local *local = sdata->local; + struct ieee80211_conf *conf = &local->hw.conf; + + WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION || + !(local->hw.flags & IEEE80211_HW_SUPPORTS_PS) || + (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)); + + local->disable_dynamic_ps = false; + conf->dynamic_ps_timeout = local->dynamic_ps_user_timeout; +} +EXPORT_SYMBOL(ieee80211_enable_dyn_ps); + +void ieee80211_disable_dyn_ps(struct ieee80211_vif *vif) +{ + struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); + struct ieee80211_local *local = sdata->local; + struct ieee80211_conf *conf = &local->hw.conf; + + WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION || + !(local->hw.flags & IEEE80211_HW_SUPPORTS_PS) || + (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)); + + local->disable_dynamic_ps = true; + conf->dynamic_ps_timeout = 0; + del_timer_sync(&local->dynamic_ps_timer); + ieee80211_queue_work(&local->hw, + &local->dynamic_ps_enable_work); +} +EXPORT_SYMBOL(ieee80211_disable_dyn_ps); + /* powersave */ static void ieee80211_enable_ps(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata) @@ -553,6 +586,7 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) found->u.mgd.associated->beacon_ies && !(found->u.mgd.flags & (IEEE80211_STA_BEACON_POLL | IEEE80211_STA_CONNECTION_POLL))) { + struct ieee80211_conf *conf = &local->hw.conf; s32 beaconint_us; if (latency < 0) @@ -561,25 +595,24 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) beaconint_us = ieee80211_tu_to_usec( found->vif.bss_conf.beacon_int); - timeout = local->hw.conf.dynamic_ps_forced_timeout; + timeout = local->dynamic_ps_forced_timeout; if (timeout < 0) { /* + * Go to full PSM if the user configures a very low + * latency requirement. * The 2 second value is there for compatibility until * the PM_QOS_NETWORK_LATENCY is configured with real * values. */ - if (latency == 2000000000) - timeout = 100; - else if (latency <= 50000) - timeout = 300; - else if (latency <= 100000) - timeout = 100; - else if (latency <= 500000) - timeout = 50; - else + if (latency > 1900000000 && latency != 2000000000) timeout = 0; + else + timeout = 100; } - local->hw.conf.dynamic_ps_timeout = timeout; + local->dynamic_ps_user_timeout = timeout; + if (!local->disable_dynamic_ps) + conf->dynamic_ps_timeout = + local->dynamic_ps_user_timeout; if (beaconint_us > latency) { local->ps_sdata = NULL; @@ -665,10 +698,11 @@ void ieee80211_dynamic_ps_timer(unsigned long data) /* MLME */ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, - struct ieee80211_if_managed *ifmgd, + struct ieee80211_sub_if_data *sdata, u8 *wmm_param, size_t wmm_param_len) { struct ieee80211_tx_queue_params params; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; size_t left; int count; u8 *pos, uapsd_queues = 0; @@ -757,8 +791,8 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, } /* enable WMM or activate new settings */ - local->hw.conf.flags |= IEEE80211_CONF_QOS; - drv_config(local, IEEE80211_CONF_CHANGE_QOS); + 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, @@ -806,11 +840,12 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, { struct ieee80211_bss *bss = (void *)cbss->priv; struct ieee80211_local *local = sdata->local; + struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; bss_info_changed |= BSS_CHANGED_ASSOC; /* set timing information */ - sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; - sdata->vif.bss_conf.timestamp = cbss->tsf; + bss_conf->beacon_int = cbss->beacon_interval; + bss_conf->timestamp = cbss->tsf; bss_info_changed |= BSS_CHANGED_BEACON_INT; bss_info_changed |= ieee80211_handle_bss_capability(sdata, @@ -835,7 +870,12 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, ieee80211_led_assoc(local, 1); - sdata->vif.bss_conf.assoc = 1; + if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) + bss_conf->dtim_period = bss->dtim_period; + else + 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 @@ -848,9 +888,15 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, /* Tell the driver to monitor connection quality (if supported) */ if ((local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI) && - sdata->vif.bss_conf.cqm_rssi_thold) + bss_conf->cqm_rssi_thold) bss_info_changed |= BSS_CHANGED_CQM; + /* Enable ARP filtering */ + if (bss_conf->arp_filter_enabled != sdata->arp_filter_state) { + bss_conf->arp_filter_enabled = sdata->arp_filter_state; + bss_info_changed |= BSS_CHANGED_ARP_FILTER; + } + ieee80211_bss_info_change_notify(sdata, bss_info_changed); mutex_lock(&local->iflist_mtx); @@ -898,13 +944,13 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, netif_tx_stop_all_queues(sdata->dev); netif_carrier_off(sdata->dev); - rcu_read_lock(); + mutex_lock(&local->sta_mtx); sta = sta_info_get(sdata, bssid); if (sta) { - set_sta_flags(sta, WLAN_STA_DISASSOC); + set_sta_flags(sta, WLAN_STA_BLOCK_BA); ieee80211_sta_tear_down_BA_sessions(sta); } - rcu_read_unlock(); + mutex_unlock(&local->sta_mtx); changed |= ieee80211_reset_erp_info(sdata); @@ -932,6 +978,12 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, 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; + } + /* The BSSID (not really interesting) and HT changed */ changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; ieee80211_bss_info_change_notify(sdata, changed); @@ -1279,7 +1331,7 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk, } if (elems.wmm_param) - ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, + ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, elems.wmm_param_len); else ieee80211_set_wmm_default(sdata); @@ -1551,7 +1603,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); - ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, + ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, elems.wmm_param_len); } @@ -1633,35 +1685,8 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, ieee80211_bss_info_change_notify(sdata, changed); } -ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, - struct sk_buff *skb) -{ - struct ieee80211_local *local = sdata->local; - struct ieee80211_mgmt *mgmt; - u16 fc; - - if (skb->len < 24) - return RX_DROP_MONITOR; - - mgmt = (struct ieee80211_mgmt *) skb->data; - fc = le16_to_cpu(mgmt->frame_control); - - switch (fc & IEEE80211_FCTL_STYPE) { - case IEEE80211_STYPE_PROBE_RESP: - case IEEE80211_STYPE_BEACON: - case IEEE80211_STYPE_DEAUTH: - case IEEE80211_STYPE_DISASSOC: - case IEEE80211_STYPE_ACTION: - skb_queue_tail(&sdata->u.mgd.skb_queue, skb); - ieee80211_queue_work(&local->hw, &sdata->u.mgd.work); - return RX_QUEUED; - } - - return RX_DROP_MONITOR; -} - -static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, - struct sk_buff *skb) +void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_rx_status *rx_status; @@ -1692,14 +1717,14 @@ static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, rma = ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); break; case IEEE80211_STYPE_ACTION: - if (mgmt->u.action.category != WLAN_CATEGORY_SPECTRUM_MGMT) + 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; - - 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); @@ -1716,17 +1741,52 @@ static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, default: WARN(1, "unexpected: %d", rma); } - goto out; + return; } mutex_unlock(&ifmgd->mtx); if (skb->len >= 24 + 2 /* mgmt + deauth reason */ && - (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_DEAUTH) - cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); + (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_DEAUTH) { + struct ieee80211_local *local = sdata->local; + struct ieee80211_work *wk; - out: - kfree_skb(skb); + mutex_lock(&local->work_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->work_mtx); + + cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); + } } static void ieee80211_sta_timer(unsigned long data) @@ -1741,39 +1801,13 @@ static void ieee80211_sta_timer(unsigned long data) return; } - ieee80211_queue_work(&local->hw, &ifmgd->work); + ieee80211_queue_work(&local->hw, &sdata->work); } -static void ieee80211_sta_work(struct work_struct *work) +void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) { - struct ieee80211_sub_if_data *sdata = - container_of(work, struct ieee80211_sub_if_data, u.mgd.work); struct ieee80211_local *local = sdata->local; - struct ieee80211_if_managed *ifmgd; - struct sk_buff *skb; - - if (!ieee80211_sdata_running(sdata)) - return; - - if (local->scanning) - return; - - if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) - return; - - /* - * ieee80211_queue_work() should have picked up most cases, - * here we'll pick the the rest. - */ - if (WARN(local->suspended, "STA MLME work scheduled while " - "going to suspend\n")) - return; - - ifmgd = &sdata->u.mgd; - - /* first process frames to avoid timing out while a frame is pending */ - while ((skb = skb_dequeue(&ifmgd->skb_queue))) - ieee80211_sta_rx_queued_mgmt(sdata, skb); + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; /* then process the rest of the work */ mutex_lock(&ifmgd->mtx); @@ -1868,8 +1902,7 @@ static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) 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->u.mgd.work); + ieee80211_queue_work(&sdata->local->hw, &sdata->work); } } @@ -1884,7 +1917,6 @@ void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata) * time -- the code here is properly synchronised. */ - cancel_work_sync(&ifmgd->work); cancel_work_sync(&ifmgd->beacon_connection_loss_work); if (del_timer_sync(&ifmgd->timer)) set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); @@ -1916,7 +1948,6 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) struct ieee80211_if_managed *ifmgd; ifmgd = &sdata->u.mgd; - INIT_WORK(&ifmgd->work, ieee80211_sta_work); INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); INIT_WORK(&ifmgd->beacon_connection_loss_work, @@ -1929,7 +1960,6 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) (unsigned long) sdata); setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, (unsigned long) sdata); - skb_queue_head_init(&ifmgd->skb_queue); ifmgd->flags = 0; @@ -2007,6 +2037,8 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, auth_alg = WLAN_AUTH_OPEN; break; case NL80211_AUTHTYPE_SHARED_KEY: + if (IS_ERR(sdata->local->wep_tx_tfm)) + return -EOPNOTSUPP; auth_alg = WLAN_AUTH_SHARED_KEY; break; case NL80211_AUTHTYPE_FT: @@ -2060,6 +2092,8 @@ static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk, struct sk_buff *skb) { struct ieee80211_mgmt *mgmt; + struct ieee80211_rx_status *rx_status; + struct ieee802_11_elems elems; u16 status; if (!skb) { @@ -2067,6 +2101,19 @@ static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk, return WORK_DONE_DESTROY; } + 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); + + wk->type = IEEE80211_WORK_ASSOC; + /* not really done yet */ + return WORK_DONE_REQUEUE; + } + mgmt = (void *)skb->data; status = le16_to_cpu(mgmt->u.assoc_resp.status_code); @@ -2079,6 +2126,7 @@ static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk, wk->filter_ta); return WORK_DONE_DESTROY; } + mutex_unlock(&wk->sdata->u.mgd.mtx); } @@ -2179,10 +2227,14 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, if (req->prev_bssid) memcpy(wk->assoc.prev_bssid, req->prev_bssid, ETH_ALEN); - wk->type = IEEE80211_WORK_ASSOC; wk->chan = req->bss->channel; 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; if (req->use_mfp) { ifmgd->mfp = IEEE80211_MFP_REQUIRED; @@ -2208,14 +2260,16 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, struct ieee80211_local *local = sdata->local; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_work *wk; - const u8 *bssid = req->bss->bssid; + u8 bssid[ETH_ALEN]; + bool assoc_bss = false; mutex_lock(&ifmgd->mtx); + memcpy(bssid, req->bss->bssid, ETH_ALEN); if (ifmgd->associated == req->bss) { - bssid = req->bss->bssid; - ieee80211_set_disassoc(sdata, true); + ieee80211_set_disassoc(sdata, false); mutex_unlock(&ifmgd->mtx); + assoc_bss = true; } else { bool not_auth_yet = false; @@ -2228,7 +2282,8 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, if (wk->type != IEEE80211_WORK_DIRECT_PROBE && wk->type != IEEE80211_WORK_AUTH && - wk->type != IEEE80211_WORK_ASSOC) + wk->type != IEEE80211_WORK_ASSOC && + wk->type != IEEE80211_WORK_ASSOC_BEACON_WAIT) continue; if (memcmp(req->bss->bssid, wk->filter_ta, ETH_ALEN)) @@ -2261,6 +2316,8 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, ieee80211_send_deauth_disassoc(sdata, bssid, IEEE80211_STYPE_DEAUTH, req->reason_code, cookie, !req->local_state_change); + if (assoc_bss) + sta_info_destroy_addr(sdata, bssid); ieee80211_recalc_idle(sdata->local); @@ -2305,41 +2362,6 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, return 0; } -int ieee80211_mgd_action(struct ieee80211_sub_if_data *sdata, - struct ieee80211_channel *chan, - enum nl80211_channel_type channel_type, - const u8 *buf, size_t len, u64 *cookie) -{ - struct ieee80211_local *local = sdata->local; - struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - struct sk_buff *skb; - - /* Check that we are on the requested channel for transmission */ - if ((chan != local->tmp_channel || - channel_type != local->tmp_channel_type) && - (chan != local->oper_channel || - channel_type != local->_oper_channel_type)) - return -EBUSY; - - skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); - if (!skb) - return -ENOMEM; - skb_reserve(skb, local->hw.extra_tx_headroom); - - memcpy(skb_put(skb, len), buf, len); - - if (!(ifmgd->flags & IEEE80211_STA_MFP_ENABLED)) - IEEE80211_SKB_CB(skb)->flags |= - IEEE80211_TX_INTFL_DONT_ENCRYPT; - IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_NL80211_FRAME_TX | - IEEE80211_TX_CTL_REQ_TX_STATUS; - skb->dev = sdata->dev; - ieee80211_tx_skb(sdata, skb); - - *cookie = (unsigned long) skb; - return 0; -} - void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, enum nl80211_cqm_rssi_threshold_event rssi_event, gfp_t gfp) |