diff options
Diffstat (limited to 'net/mac80211/iface.c')
| -rw-r--r-- | net/mac80211/iface.c | 1025 |
1 files changed, 532 insertions, 493 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 9740ae8fa697..1be775979132 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -348,439 +348,6 @@ static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata, return 0; } -void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, - const int offset) -{ - struct ieee80211_local *local = sdata->local; - u32 flags = sdata->u.mntr.flags; - -#define ADJUST(_f, _s) do { \ - if (flags & MONITOR_FLAG_##_f) \ - local->fif_##_s += offset; \ - } while (0) - - ADJUST(FCSFAIL, fcsfail); - ADJUST(PLCPFAIL, plcpfail); - ADJUST(CONTROL, control); - ADJUST(CONTROL, pspoll); - ADJUST(OTHER_BSS, other_bss); - -#undef ADJUST -} - -static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) -{ - struct ieee80211_local *local = sdata->local; - int i; - - for (i = 0; i < IEEE80211_NUM_ACS; i++) { - if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) - sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; - else if (local->hw.queues >= IEEE80211_NUM_ACS) - sdata->vif.hw_queue[i] = i; - else - sdata->vif.hw_queue[i] = 0; - } - sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; -} - -int ieee80211_add_virtual_monitor(struct ieee80211_local *local) -{ - struct ieee80211_sub_if_data *sdata; - int ret; - - if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) - return 0; - - ASSERT_RTNL(); - - if (local->monitor_sdata) - return 0; - - sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); - if (!sdata) - return -ENOMEM; - - /* set up data */ - sdata->local = local; - sdata->vif.type = NL80211_IFTYPE_MONITOR; - snprintf(sdata->name, IFNAMSIZ, "%s-monitor", - wiphy_name(local->hw.wiphy)); - sdata->wdev.iftype = NL80211_IFTYPE_MONITOR; - - sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; - - ieee80211_set_default_queues(sdata); - - ret = drv_add_interface(local, sdata); - if (WARN_ON(ret)) { - /* ok .. stupid driver, it asked for this! */ - kfree(sdata); - return ret; - } - - ret = ieee80211_check_queues(sdata, NL80211_IFTYPE_MONITOR); - if (ret) { - kfree(sdata); - return ret; - } - - mutex_lock(&local->iflist_mtx); - rcu_assign_pointer(local->monitor_sdata, sdata); - mutex_unlock(&local->iflist_mtx); - - mutex_lock(&local->mtx); - ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, - IEEE80211_CHANCTX_EXCLUSIVE); - mutex_unlock(&local->mtx); - if (ret) { - mutex_lock(&local->iflist_mtx); - RCU_INIT_POINTER(local->monitor_sdata, NULL); - mutex_unlock(&local->iflist_mtx); - synchronize_net(); - drv_remove_interface(local, sdata); - kfree(sdata); - return ret; - } - - skb_queue_head_init(&sdata->skb_queue); - INIT_WORK(&sdata->work, ieee80211_iface_work); - - return 0; -} - -void ieee80211_del_virtual_monitor(struct ieee80211_local *local) -{ - struct ieee80211_sub_if_data *sdata; - - if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) - return; - - ASSERT_RTNL(); - - mutex_lock(&local->iflist_mtx); - - sdata = rcu_dereference_protected(local->monitor_sdata, - lockdep_is_held(&local->iflist_mtx)); - if (!sdata) { - mutex_unlock(&local->iflist_mtx); - return; - } - - RCU_INIT_POINTER(local->monitor_sdata, NULL); - mutex_unlock(&local->iflist_mtx); - - synchronize_net(); - - mutex_lock(&local->mtx); - ieee80211_vif_release_channel(sdata); - mutex_unlock(&local->mtx); - - drv_remove_interface(local, sdata); - - kfree(sdata); -} - -/* - * NOTE: Be very careful when changing this function, it must NOT return - * an error on interface type changes that have been pre-checked, so most - * checks should be in ieee80211_check_concurrent_iface. - */ -int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) -{ - struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); - struct net_device *dev = wdev->netdev; - struct ieee80211_local *local = sdata->local; - struct sta_info *sta; - u32 changed = 0; - int res; - u32 hw_reconf_flags = 0; - - switch (sdata->vif.type) { - case NL80211_IFTYPE_WDS: - if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) - return -ENOLINK; - break; - case NL80211_IFTYPE_AP_VLAN: { - struct ieee80211_sub_if_data *master; - - if (!sdata->bss) - return -ENOLINK; - - mutex_lock(&local->mtx); - list_add(&sdata->u.vlan.list, &sdata->bss->vlans); - mutex_unlock(&local->mtx); - - master = container_of(sdata->bss, - struct ieee80211_sub_if_data, u.ap); - sdata->control_port_protocol = - master->control_port_protocol; - sdata->control_port_no_encrypt = - master->control_port_no_encrypt; - sdata->control_port_over_nl80211 = - master->control_port_over_nl80211; - sdata->control_port_no_preauth = - master->control_port_no_preauth; - sdata->vif.cab_queue = master->vif.cab_queue; - memcpy(sdata->vif.hw_queue, master->vif.hw_queue, - sizeof(sdata->vif.hw_queue)); - sdata->vif.bss_conf.chandef = master->vif.bss_conf.chandef; - - mutex_lock(&local->key_mtx); - sdata->crypto_tx_tailroom_needed_cnt += - master->crypto_tx_tailroom_needed_cnt; - mutex_unlock(&local->key_mtx); - - break; - } - case NL80211_IFTYPE_AP: - sdata->bss = &sdata->u.ap; - break; - case NL80211_IFTYPE_MESH_POINT: - case NL80211_IFTYPE_STATION: - case NL80211_IFTYPE_MONITOR: - case NL80211_IFTYPE_ADHOC: - case NL80211_IFTYPE_P2P_DEVICE: - case NL80211_IFTYPE_OCB: - case NL80211_IFTYPE_NAN: - /* no special treatment */ - break; - case NL80211_IFTYPE_UNSPECIFIED: - case NUM_NL80211_IFTYPES: - case NL80211_IFTYPE_P2P_CLIENT: - case NL80211_IFTYPE_P2P_GO: - /* cannot happen */ - WARN_ON(1); - break; - } - - if (local->open_count == 0) { - res = drv_start(local); - if (res) - goto err_del_bss; - /* we're brought up, everything changes */ - hw_reconf_flags = ~0; - ieee80211_led_radio(local, true); - ieee80211_mod_tpt_led_trig(local, - IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); - } - - /* - * Copy the hopefully now-present MAC address to - * this interface, if it has the special null one. - */ - if (dev && is_zero_ether_addr(dev->dev_addr)) { - memcpy(dev->dev_addr, - local->hw.wiphy->perm_addr, - ETH_ALEN); - memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); - - if (!is_valid_ether_addr(dev->dev_addr)) { - res = -EADDRNOTAVAIL; - goto err_stop; - } - } - - switch (sdata->vif.type) { - case NL80211_IFTYPE_AP_VLAN: - /* no need to tell driver, but set carrier and chanctx */ - if (rtnl_dereference(sdata->bss->beacon)) { - ieee80211_vif_vlan_copy_chanctx(sdata); - netif_carrier_on(dev); - } else { - netif_carrier_off(dev); - } - break; - case NL80211_IFTYPE_MONITOR: - if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) { - local->cooked_mntrs++; - break; - } - - if (sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) { - res = drv_add_interface(local, sdata); - if (res) - goto err_stop; - } else if (local->monitors == 0 && local->open_count == 0) { - res = ieee80211_add_virtual_monitor(local); - if (res) - goto err_stop; - } - - /* must be before the call to ieee80211_configure_filter */ - local->monitors++; - if (local->monitors == 1) { - local->hw.conf.flags |= IEEE80211_CONF_MONITOR; - hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; - } - - ieee80211_adjust_monitor_flags(sdata, 1); - ieee80211_configure_filter(local); - mutex_lock(&local->mtx); - ieee80211_recalc_idle(local); - mutex_unlock(&local->mtx); - - netif_carrier_on(dev); - break; - default: - if (coming_up) { - ieee80211_del_virtual_monitor(local); - - res = drv_add_interface(local, sdata); - if (res) - goto err_stop; - res = ieee80211_check_queues(sdata, - ieee80211_vif_type_p2p(&sdata->vif)); - if (res) - goto err_del_interface; - } - - if (sdata->vif.type == NL80211_IFTYPE_AP) { - local->fif_pspoll++; - local->fif_probe_req++; - - ieee80211_configure_filter(local); - } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { - local->fif_probe_req++; - } - - if (sdata->vif.probe_req_reg) - drv_config_iface_filter(local, sdata, - FIF_PROBE_REQ, - FIF_PROBE_REQ); - - if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && - sdata->vif.type != NL80211_IFTYPE_NAN) - changed |= ieee80211_reset_erp_info(sdata); - ieee80211_bss_info_change_notify(sdata, changed); - - switch (sdata->vif.type) { - case NL80211_IFTYPE_STATION: - case NL80211_IFTYPE_ADHOC: - case NL80211_IFTYPE_AP: - case NL80211_IFTYPE_MESH_POINT: - case NL80211_IFTYPE_OCB: - netif_carrier_off(dev); - break; - case NL80211_IFTYPE_WDS: - case NL80211_IFTYPE_P2P_DEVICE: - case NL80211_IFTYPE_NAN: - break; - default: - /* not reached */ - WARN_ON(1); - } - - /* - * Set default queue parameters so drivers don't - * need to initialise the hardware if the hardware - * doesn't start up with sane defaults. - * Enable QoS for anything but station interfaces. - */ - ieee80211_set_wmm_default(sdata, true, - sdata->vif.type != NL80211_IFTYPE_STATION); - } - - set_bit(SDATA_STATE_RUNNING, &sdata->state); - - switch (sdata->vif.type) { - case NL80211_IFTYPE_WDS: - /* Create STA entry for the WDS peer */ - sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, - GFP_KERNEL); - if (!sta) { - res = -ENOMEM; - goto err_del_interface; - } - - 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) { - /* STA has been freed */ - goto err_del_interface; - } - - rate_control_rate_init(sta); - netif_carrier_on(dev); - break; - case NL80211_IFTYPE_P2P_DEVICE: - rcu_assign_pointer(local->p2p_sdata, sdata); - break; - case NL80211_IFTYPE_MONITOR: - if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) - break; - list_add_tail_rcu(&sdata->u.mntr.list, &local->mon_list); - break; - default: - break; - } - - /* - * set_multicast_list will be invoked by the networking core - * which will check whether any increments here were done in - * error and sync them down to the hardware as filter flags. - */ - if (sdata->flags & IEEE80211_SDATA_ALLMULTI) - atomic_inc(&local->iff_allmultis); - - if (coming_up) - local->open_count++; - - if (hw_reconf_flags) - ieee80211_hw_config(local, hw_reconf_flags); - - ieee80211_recalc_ps(local); - - if (sdata->vif.type == NL80211_IFTYPE_MONITOR || - sdata->vif.type == NL80211_IFTYPE_AP_VLAN || - local->ops->wake_tx_queue) { - /* XXX: for AP_VLAN, actually track AP queues */ - if (dev) - netif_tx_start_all_queues(dev); - } else if (dev) { - unsigned long flags; - int n_acs = IEEE80211_NUM_ACS; - int ac; - - if (local->hw.queues < IEEE80211_NUM_ACS) - n_acs = 1; - - spin_lock_irqsave(&local->queue_stop_reason_lock, flags); - if (sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE || - (local->queue_stop_reasons[sdata->vif.cab_queue] == 0 && - skb_queue_empty(&local->pending[sdata->vif.cab_queue]))) { - for (ac = 0; ac < n_acs; ac++) { - int ac_queue = sdata->vif.hw_queue[ac]; - - if (local->queue_stop_reasons[ac_queue] == 0 && - skb_queue_empty(&local->pending[ac_queue])) - netif_start_subqueue(dev, ac); - } - } - spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); - } - - return 0; - err_del_interface: - drv_remove_interface(local, sdata); - err_stop: - if (!local->open_count) - drv_stop(local); - err_del_bss: - sdata->bss = NULL; - if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { - mutex_lock(&local->mtx); - list_del(&sdata->u.vlan.list); - mutex_unlock(&local->mtx); - } - /* might already be clear but that doesn't matter */ - clear_bit(SDATA_STATE_RUNNING, &sdata->state); - return res; -} - static int ieee80211_open(struct net_device *dev) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); @@ -1142,28 +709,7 @@ static u16 ieee80211_netdev_select_queue(struct net_device *dev, static void ieee80211_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) { - int i; - - for_each_possible_cpu(i) { - const struct pcpu_sw_netstats *tstats; - u64 rx_packets, rx_bytes, tx_packets, tx_bytes; - unsigned int start; - - tstats = per_cpu_ptr(dev->tstats, i); - - do { - start = u64_stats_fetch_begin_irq(&tstats->syncp); - rx_packets = tstats->rx_packets; - tx_packets = tstats->tx_packets; - rx_bytes = tstats->rx_bytes; - tx_bytes = tstats->tx_bytes; - } while (u64_stats_fetch_retry_irq(&tstats->syncp, start)); - - stats->rx_packets += rx_packets; - stats->tx_packets += tx_packets; - stats->rx_bytes += rx_bytes; - stats->tx_bytes += tx_bytes; - } + dev_fetch_sw_netstats(stats, dev->tstats); } static const struct net_device_ops ieee80211_dataif_ops = { @@ -1227,60 +773,547 @@ static const struct net_device_ops ieee80211_dataif_8023_ops = { .ndo_get_stats64 = ieee80211_get_stats64, }; -static void __ieee80211_set_hw_80211_encap(struct ieee80211_sub_if_data *sdata, - bool enable) +static bool ieee80211_iftype_supports_encap_offload(enum nl80211_iftype iftype) { - sdata->dev->netdev_ops = enable ? &ieee80211_dataif_8023_ops : - &ieee80211_dataif_ops; - sdata->hw_80211_encap = enable; + switch (iftype) { + /* P2P GO and client are mapped to AP/STATION types */ + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_STATION: + return true; + default: + return false; + } } -bool ieee80211_set_hw_80211_encap(struct ieee80211_vif *vif, bool enable) +static bool ieee80211_set_sdata_offload_flags(struct ieee80211_sub_if_data *sdata) { - struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct ieee80211_local *local = sdata->local; - struct ieee80211_sub_if_data *iter; - struct ieee80211_key *key; + u32 flags; + + flags = sdata->vif.offload_flags; + + if (ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD) && + ieee80211_iftype_supports_encap_offload(sdata->vif.type)) { + flags |= IEEE80211_OFFLOAD_ENCAP_ENABLED; + + if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_FRAG) && + local->hw.wiphy->frag_threshold != (u32)-1) + flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; + + if (local->monitors) + flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; + } else { + flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; + } + + if (sdata->vif.offload_flags == flags) + return false; + + sdata->vif.offload_flags = flags; + return true; +} + +static void ieee80211_set_vif_encap_ops(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_local *local = sdata->local; + struct ieee80211_sub_if_data *bss = sdata; + bool enabled; + + if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { + if (!sdata->bss) + return; + + bss = container_of(sdata->bss, struct ieee80211_sub_if_data, u.ap); + } + + if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD) || + !ieee80211_iftype_supports_encap_offload(bss->vif.type)) + return; + + enabled = bss->vif.offload_flags & IEEE80211_OFFLOAD_ENCAP_ENABLED; + if (sdata->wdev.use_4addr && + !(bss->vif.offload_flags & IEEE80211_OFFLOAD_ENCAP_4ADDR)) + enabled = false; + + sdata->dev->netdev_ops = enabled ? &ieee80211_dataif_8023_ops : + &ieee80211_dataif_ops; +} + +static void ieee80211_recalc_sdata_offload(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_local *local = sdata->local; + struct ieee80211_sub_if_data *vsdata; + + if (ieee80211_set_sdata_offload_flags(sdata)) { + drv_update_vif_offload(local, sdata); + ieee80211_set_vif_encap_ops(sdata); + } + + list_for_each_entry(vsdata, &local->interfaces, list) { + if (vsdata->vif.type != NL80211_IFTYPE_AP_VLAN || + vsdata->bss != &sdata->u.ap) + continue; + + ieee80211_set_vif_encap_ops(vsdata); + } +} + +void ieee80211_recalc_offload(struct ieee80211_local *local) +{ + struct ieee80211_sub_if_data *sdata; + + if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD)) + return; mutex_lock(&local->iflist_mtx); - list_for_each_entry(iter, &local->interfaces, list) { - struct ieee80211_sub_if_data *disable = NULL; - - if (vif->type == NL80211_IFTYPE_MONITOR) { - disable = iter; - __ieee80211_set_hw_80211_encap(iter, false); - } else if (iter->vif.type == NL80211_IFTYPE_MONITOR) { - disable = sdata; - enable = false; - } - if (disable) - sdata_dbg(disable, - "disable hw 80211 encap due to mon co-exist\n"); + + list_for_each_entry(sdata, &local->interfaces, list) { + if (!ieee80211_sdata_running(sdata)) + continue; + + ieee80211_recalc_sdata_offload(sdata); } + mutex_unlock(&local->iflist_mtx); +} - if (enable == sdata->hw_80211_encap) - return enable; +void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, + const int offset) +{ + struct ieee80211_local *local = sdata->local; + u32 flags = sdata->u.mntr.flags; - if (!sdata->dev) - return false; +#define ADJUST(_f, _s) do { \ + if (flags & MONITOR_FLAG_##_f) \ + local->fif_##_s += offset; \ + } while (0) + + ADJUST(FCSFAIL, fcsfail); + ADJUST(PLCPFAIL, plcpfail); + ADJUST(CONTROL, control); + ADJUST(CONTROL, pspoll); + ADJUST(OTHER_BSS, other_bss); + +#undef ADJUST +} + +static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_local *local = sdata->local; + int i; + + for (i = 0; i < IEEE80211_NUM_ACS; i++) { + if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) + sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; + else if (local->hw.queues >= IEEE80211_NUM_ACS) + sdata->vif.hw_queue[i] = i; + else + sdata->vif.hw_queue[i] = 0; + } + sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; +} + +int ieee80211_add_virtual_monitor(struct ieee80211_local *local) +{ + struct ieee80211_sub_if_data *sdata; + int ret; + + if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) + return 0; + + ASSERT_RTNL(); + + if (local->monitor_sdata) + return 0; + + sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); + if (!sdata) + return -ENOMEM; + + /* set up data */ + sdata->local = local; + sdata->vif.type = NL80211_IFTYPE_MONITOR; + snprintf(sdata->name, IFNAMSIZ, "%s-monitor", + wiphy_name(local->hw.wiphy)); + sdata->wdev.iftype = NL80211_IFTYPE_MONITOR; + + sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; + + ieee80211_set_default_queues(sdata); + + ret = drv_add_interface(local, sdata); + if (WARN_ON(ret)) { + /* ok .. stupid driver, it asked for this! */ + kfree(sdata); + return ret; + } + + ret = ieee80211_check_queues(sdata, NL80211_IFTYPE_MONITOR); + if (ret) { + kfree(sdata); + return ret; + } + + mutex_lock(&local->iflist_mtx); + rcu_assign_pointer(local->monitor_sdata, sdata); + mutex_unlock(&local->iflist_mtx); + + mutex_lock(&local->mtx); + ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, + IEEE80211_CHANCTX_EXCLUSIVE); + mutex_unlock(&local->mtx); + if (ret) { + mutex_lock(&local->iflist_mtx); + RCU_INIT_POINTER(local->monitor_sdata, NULL); + mutex_unlock(&local->iflist_mtx); + synchronize_net(); + drv_remove_interface(local, sdata); + kfree(sdata); + return ret; + } - if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_FRAG) && - (local->hw.wiphy->frag_threshold != (u32)-1)) - enable = false; + skb_queue_head_init(&sdata->skb_queue); + INIT_WORK(&sdata->work, ieee80211_iface_work); + + return 0; +} - mutex_lock(&sdata->local->key_mtx); - list_for_each_entry(key, &sdata->key_list, list) { - if (key->conf.cipher == WLAN_CIPHER_SUITE_TKIP) - enable = false; +void ieee80211_del_virtual_monitor(struct ieee80211_local *local) +{ + struct ieee80211_sub_if_data *sdata; + + if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) + return; + + ASSERT_RTNL(); + + mutex_lock(&local->iflist_mtx); + + sdata = rcu_dereference_protected(local->monitor_sdata, + lockdep_is_held(&local->iflist_mtx)); + if (!sdata) { + mutex_unlock(&local->iflist_mtx); + return; } - mutex_unlock(&sdata->local->key_mtx); - __ieee80211_set_hw_80211_encap(sdata, enable); + RCU_INIT_POINTER(local->monitor_sdata, NULL); + mutex_unlock(&local->iflist_mtx); + + synchronize_net(); - return enable; + mutex_lock(&local->mtx); + ieee80211_vif_release_channel(sdata); + mutex_unlock(&local->mtx); + + drv_remove_interface(local, sdata); + + kfree(sdata); +} + +/* + * NOTE: Be very careful when changing this function, it must NOT return + * an error on interface type changes that have been pre-checked, so most + * checks should be in ieee80211_check_concurrent_iface. + */ +int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + struct net_device *dev = wdev->netdev; + struct ieee80211_local *local = sdata->local; + struct sta_info *sta; + u32 changed = 0; + int res; + u32 hw_reconf_flags = 0; + + switch (sdata->vif.type) { + case NL80211_IFTYPE_WDS: + if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) + return -ENOLINK; + break; + case NL80211_IFTYPE_AP_VLAN: { + struct ieee80211_sub_if_data *master; + + if (!sdata->bss) + return -ENOLINK; + + mutex_lock(&local->mtx); + list_add(&sdata->u.vlan.list, &sdata->bss->vlans); + mutex_unlock(&local->mtx); + + master = container_of(sdata->bss, + struct ieee80211_sub_if_data, u.ap); + sdata->control_port_protocol = + master->control_port_protocol; + sdata->control_port_no_encrypt = + master->control_port_no_encrypt; + sdata->control_port_over_nl80211 = + master->control_port_over_nl80211; + sdata->control_port_no_preauth = + master->control_port_no_preauth; + sdata->vif.cab_queue = master->vif.cab_queue; + memcpy(sdata->vif.hw_queue, master->vif.hw_queue, + sizeof(sdata->vif.hw_queue)); + sdata->vif.bss_conf.chandef = master->vif.bss_conf.chandef; + + mutex_lock(&local->key_mtx); + sdata->crypto_tx_tailroom_needed_cnt += + master->crypto_tx_tailroom_needed_cnt; + mutex_unlock(&local->key_mtx); + + break; + } + case NL80211_IFTYPE_AP: + sdata->bss = &sdata->u.ap; + break; + case NL80211_IFTYPE_MESH_POINT: + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_MONITOR: + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_P2P_DEVICE: + case NL80211_IFTYPE_OCB: + case NL80211_IFTYPE_NAN: + /* no special treatment */ + break; + case NL80211_IFTYPE_UNSPECIFIED: + case NUM_NL80211_IFTYPES: + case NL80211_IFTYPE_P2P_CLIENT: + case NL80211_IFTYPE_P2P_GO: + /* cannot happen */ + WARN_ON(1); + break; + } + + if (local->open_count == 0) { + res = drv_start(local); + if (res) + goto err_del_bss; + /* we're brought up, everything changes */ + hw_reconf_flags = ~0; + ieee80211_led_radio(local, true); + ieee80211_mod_tpt_led_trig(local, + IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); + } + + /* + * Copy the hopefully now-present MAC address to + * this interface, if it has the special null one. + */ + if (dev && is_zero_ether_addr(dev->dev_addr)) { + memcpy(dev->dev_addr, + local->hw.wiphy->perm_addr, + ETH_ALEN); + memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); + + if (!is_valid_ether_addr(dev->dev_addr)) { + res = -EADDRNOTAVAIL; + goto err_stop; + } + } + + switch (sdata->vif.type) { + case NL80211_IFTYPE_AP_VLAN: + /* no need to tell driver, but set carrier and chanctx */ + if (rtnl_dereference(sdata->bss->beacon)) { + ieee80211_vif_vlan_copy_chanctx(sdata); + netif_carrier_on(dev); + ieee80211_set_vif_encap_ops(sdata); + } else { + netif_carrier_off(dev); + } + break; + case NL80211_IFTYPE_MONITOR: + if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) { + local->cooked_mntrs++; + break; + } + + if (sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) { + res = drv_add_interface(local, sdata); + if (res) + goto err_stop; + } else if (local->monitors == 0 && local->open_count == 0) { + res = ieee80211_add_virtual_monitor(local); + if (res) + goto err_stop; + } + + /* must be before the call to ieee80211_configure_filter */ + local->monitors++; + if (local->monitors == 1) { + local->hw.conf.flags |= IEEE80211_CONF_MONITOR; + hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; + } + + ieee80211_adjust_monitor_flags(sdata, 1); + ieee80211_configure_filter(local); + ieee80211_recalc_offload(local); + mutex_lock(&local->mtx); + ieee80211_recalc_idle(local); + mutex_unlock(&local->mtx); + + netif_carrier_on(dev); + break; + default: + if (coming_up) { + ieee80211_del_virtual_monitor(local); + ieee80211_set_sdata_offload_flags(sdata); + + res = drv_add_interface(local, sdata); + if (res) + goto err_stop; + + ieee80211_set_vif_encap_ops(sdata); + res = ieee80211_check_queues(sdata, + ieee80211_vif_type_p2p(&sdata->vif)); + if (res) + goto err_del_interface; + } + + if (sdata->vif.type == NL80211_IFTYPE_AP) { + local->fif_pspoll++; + local->fif_probe_req++; + + ieee80211_configure_filter(local); + } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { + local->fif_probe_req++; + } + + if (sdata->vif.probe_req_reg) + drv_config_iface_filter(local, sdata, + FIF_PROBE_REQ, + FIF_PROBE_REQ); + + if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && + sdata->vif.type != NL80211_IFTYPE_NAN) + changed |= ieee80211_reset_erp_info(sdata); + ieee80211_bss_info_change_notify(sdata, changed); + + switch (sdata->vif.type) { + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_MESH_POINT: + case NL80211_IFTYPE_OCB: + netif_carrier_off(dev); + break; + case NL80211_IFTYPE_WDS: + case NL80211_IFTYPE_P2P_DEVICE: + case NL80211_IFTYPE_NAN: + break; + default: + /* not reached */ + WARN_ON(1); + } + + /* + * Set default queue parameters so drivers don't + * need to initialise the hardware if the hardware + * doesn't start up with sane defaults. + * Enable QoS for anything but station interfaces. + */ + ieee80211_set_wmm_default(sdata, true, + sdata->vif.type != NL80211_IFTYPE_STATION); + } + + set_bit(SDATA_STATE_RUNNING, &sdata->state); + + switch (sdata->vif.type) { + case NL80211_IFTYPE_WDS: + /* Create STA entry for the WDS peer */ + sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, + GFP_KERNEL); + if (!sta) { + res = -ENOMEM; + goto err_del_interface; + } + + 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) { + /* STA has been freed */ + goto err_del_interface; + } + + rate_control_rate_init(sta); + netif_carrier_on(dev); + break; + case NL80211_IFTYPE_P2P_DEVICE: + rcu_assign_pointer(local->p2p_sdata, sdata); + break; + case NL80211_IFTYPE_MONITOR: + if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) + break; + list_add_tail_rcu(&sdata->u.mntr.list, &local->mon_list); + break; + default: + break; + } + + /* + * set_multicast_list will be invoked by the networking core + * which will check whether any increments here were done in + * error and sync them down to the hardware as filter flags. + */ + if (sdata->flags & IEEE80211_SDATA_ALLMULTI) + atomic_inc(&local->iff_allmultis); + + if (coming_up) + local->open_count++; + + if (hw_reconf_flags) + ieee80211_hw_config(local, hw_reconf_flags); + + ieee80211_recalc_ps(local); + + if (sdata->vif.type == NL80211_IFTYPE_MONITOR || + sdata->vif.type == NL80211_IFTYPE_AP_VLAN || + local->ops->wake_tx_queue) { + /* XXX: for AP_VLAN, actually track AP queues */ + if (dev) + netif_tx_start_all_queues(dev); + } else if (dev) { + unsigned long flags; + int n_acs = IEEE80211_NUM_ACS; + int ac; + + if (local->hw.queues < IEEE80211_NUM_ACS) + n_acs = 1; + + spin_lock_irqsave(&local->queue_stop_reason_lock, flags); + if (sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE || + (local->queue_stop_reasons[sdata->vif.cab_queue] == 0 && + skb_queue_empty(&local->pending[sdata->vif.cab_queue]))) { + for (ac = 0; ac < n_acs; ac++) { + int ac_queue = sdata->vif.hw_queue[ac]; + + if (local->queue_stop_reasons[ac_queue] == 0 && + skb_queue_empty(&local->pending[ac_queue])) + netif_start_subqueue(dev, ac); + } + } + spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); + } + + return 0; + err_del_interface: + drv_remove_interface(local, sdata); + err_stop: + if (!local->open_count) + drv_stop(local); + err_del_bss: + sdata->bss = NULL; + if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { + mutex_lock(&local->mtx); + list_del(&sdata->u.vlan.list); + mutex_unlock(&local->mtx); + } + /* might already be clear but that doesn't matter */ + clear_bit(SDATA_STATE_RUNNING, &sdata->state); + return res; } -EXPORT_SYMBOL(ieee80211_set_hw_80211_encap); static void ieee80211_if_free(struct net_device *dev) { @@ -1379,6 +1412,11 @@ static void ieee80211_iface_work(struct work_struct *work) WARN_ON(1); break; } + } else if (ieee80211_is_ext(mgmt->frame_control)) { + if (sdata->vif.type == NL80211_IFTYPE_STATION) + ieee80211_sta_rx_queued_ext(sdata, skb); + else + WARN_ON(1); } else if (ieee80211_is_data_qos(mgmt->frame_control)) { struct ieee80211_hdr *hdr = (void *)mgmt; /* @@ -1484,7 +1522,6 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, sdata->vif.bss_conf.txpower = INT_MIN; /* unset */ sdata->noack_map = 0; - sdata->hw_80211_encap = false; /* only monitor/p2p-device differ */ if (sdata->dev) { @@ -1619,6 +1656,7 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, ieee80211_teardown_sdata(sdata); + ieee80211_set_sdata_offload_flags(sdata); ret = drv_change_interface(local, sdata, internal_type, p2p); if (ret) type = ieee80211_vif_type_p2p(&sdata->vif); @@ -1631,6 +1669,7 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, ieee80211_check_queues(sdata, type); ieee80211_setup_sdata(sdata, type); + ieee80211_set_vif_encap_ops(sdata); err = ieee80211_do_open(&sdata->wdev, false); WARN(err, "type change: do_open returned %d", err); |