diff options
Diffstat (limited to 'net/mac80211/iface.c')
| -rw-r--r-- | net/mac80211/iface.c | 2181 |
1 files changed, 1442 insertions, 739 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index cc117591f678..4f04d95c19d4 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Interface handling * @@ -5,16 +6,16 @@ * Copyright 2005-2006, Devicescape Software, Inc. * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. + * Copyright 2013-2014 Intel Mobile Communications GmbH + * Copyright (c) 2016 Intel Deutschland GmbH + * Copyright (C) 2018-2025 Intel Corporation */ #include <linux/slab.h> #include <linux/kernel.h> #include <linux/if_arp.h> #include <linux/netdevice.h> #include <linux/rtnetlink.h> +#include <linux/kcov.h> #include <net/mac80211.h> #include <net/ieee80211_radiotap.h> #include "ieee80211_i.h" @@ -32,50 +33,53 @@ * The interface list in each struct ieee80211_local is protected * three-fold: * - * (1) modifications may only be done under the RTNL - * (2) modifications and readers are protected against each other by - * the iflist_mtx. - * (3) modifications are done in an RCU manner so atomic readers + * (1) modifications may only be done under the RTNL *and* wiphy mutex + * *and* iflist_mtx + * (2) modifications are done in an RCU manner so atomic readers * can traverse the list in RCU-safe blocks. * * As a consequence, reads (traversals) of the list can be protected - * by either the RTNL, the iflist_mtx or RCU. + * by either the RTNL, the wiphy mutex, the iflist_mtx or RCU. */ -bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) +static void ieee80211_iface_work(struct wiphy *wiphy, struct wiphy_work *work); + +bool __ieee80211_recalc_txpower(struct ieee80211_link_data *link) { struct ieee80211_chanctx_conf *chanctx_conf; int power; rcu_read_lock(); - chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + chanctx_conf = rcu_dereference(link->conf->chanctx_conf); if (!chanctx_conf) { rcu_read_unlock(); return false; } - power = chanctx_conf->def.chan->max_power; + power = ieee80211_chandef_max_power(&chanctx_conf->def); rcu_read_unlock(); - if (sdata->user_power_level != IEEE80211_UNSET_POWER_LEVEL) - power = min(power, sdata->user_power_level); + if (link->user_power_level != IEEE80211_UNSET_POWER_LEVEL) + power = min(power, link->user_power_level); - if (sdata->ap_power_level != IEEE80211_UNSET_POWER_LEVEL) - power = min(power, sdata->ap_power_level); + if (link->ap_power_level != IEEE80211_UNSET_POWER_LEVEL) + power = min(power, link->ap_power_level); - if (power != sdata->vif.bss_conf.txpower) { - sdata->vif.bss_conf.txpower = power; - ieee80211_hw_config(sdata->local, 0); + if (power != link->conf->txpower) { + link->conf->txpower = power; return true; } return false; } -void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) +void ieee80211_recalc_txpower(struct ieee80211_link_data *link, + bool update_bss) { - if (__ieee80211_recalc_txpower(sdata)) - ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_TXPOWER); + if (__ieee80211_recalc_txpower(link) || + (update_bss && ieee80211_sdata_running(link->sdata))) + ieee80211_link_info_change_notify(link->sdata, link, + BSS_CHANGED_TXPOWER); } static u32 __ieee80211_idle_off(struct ieee80211_local *local) @@ -92,7 +96,7 @@ static u32 __ieee80211_idle_on(struct ieee80211_local *local) if (local->hw.conf.flags & IEEE80211_CONF_IDLE) return 0; - ieee80211_flush_queues(local, NULL); + ieee80211_flush_queues(local, NULL, false); local->hw.conf.flags |= IEEE80211_CONF_IDLE; return IEEE80211_CONF_CHANGE_IDLE; @@ -101,18 +105,22 @@ static u32 __ieee80211_idle_on(struct ieee80211_local *local) static u32 __ieee80211_recalc_idle(struct ieee80211_local *local, bool force_active) { - bool working = false, scanning, active; + bool working, scanning, active; unsigned int led_trig_start = 0, led_trig_stop = 0; - struct ieee80211_roc_work *roc; + struct ieee80211_sub_if_data *iter; - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); active = force_active || !list_empty(&local->chanctx_list) || local->monitors; - if (!local->ops->remain_on_channel) { - list_for_each_entry(roc, &local->roc_list, list) { + working = !local->ops->remain_on_channel && + !list_empty(&local->roc_list); + + list_for_each_entry(iter, &local->interfaces, list) { + if (iter->vif.type == NL80211_IFTYPE_NAN && + iter->u.nan.started) { working = true; break; } @@ -147,16 +155,7 @@ void ieee80211_recalc_idle(struct ieee80211_local *local) { u32 change = __ieee80211_recalc_idle(local, false); if (change) - ieee80211_hw_config(local, change); -} - -static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) -{ - if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) - return -EINVAL; - - dev->mtu = new_mtu; - return 0; + ieee80211_hw_config(local, -1, change); } static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr, @@ -168,6 +167,8 @@ static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr, u8 *m; int ret = 0; + lockdep_assert_wiphy(local->hw.wiphy); + if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) return 0; @@ -184,13 +185,12 @@ static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr, if (!check_dup) return ret; - mutex_lock(&local->iflist_mtx); list_for_each_entry(iter, &local->interfaces, list) { if (iter == sdata) continue; if (iter->vif.type == NL80211_IFTYPE_MONITOR && - !(iter->u.mntr_flags & MONITOR_FLAG_ACTIVE)) + !(iter->u.mntr.flags & MONITOR_FLAG_ACTIVE)) continue; m = iter->vif.addr; @@ -203,47 +203,135 @@ static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr, break; } } - mutex_unlock(&local->iflist_mtx); return ret; } -static int ieee80211_change_mac(struct net_device *dev, void *addr) +static int ieee80211_can_powered_addr_change(struct ieee80211_sub_if_data *sdata) { - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_roc_work *roc; + struct ieee80211_local *local = sdata->local; + struct ieee80211_sub_if_data *scan_sdata; + int ret = 0; + + lockdep_assert_wiphy(local->hw.wiphy); + + /* To be the most flexible here we want to only limit changing the + * address if the specific interface is doing offchannel work or + * scanning. + */ + if (netif_carrier_ok(sdata->dev)) + return -EBUSY; + + /* if any stations are set known (so they know this vif too), reject */ + if (sta_info_get_by_idx(sdata, 0)) + return -EBUSY; + + /* First check no ROC work is happening on this iface */ + list_for_each_entry(roc, &local->roc_list, list) { + if (roc->sdata != sdata) + continue; + + if (roc->started) { + ret = -EBUSY; + goto unlock; + } + } + + /* And if this iface is scanning */ + if (local->scanning) { + scan_sdata = rcu_dereference_protected(local->scan_sdata, + lockdep_is_held(&local->hw.wiphy->mtx)); + if (sdata == scan_sdata) + ret = -EBUSY; + } + + /* + * More interface types could be added here but changing the + * address while powered makes the most sense in client modes. + */ + switch (sdata->vif.type) { + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_P2P_CLIENT: + /* refuse while connecting */ + if (sdata->u.mgd.auth_data || sdata->u.mgd.assoc_data) + return -EBUSY; + break; + default: + ret = -EOPNOTSUPP; + } + +unlock: + return ret; +} + +static int _ieee80211_change_mac(struct ieee80211_sub_if_data *sdata, + void *addr) +{ + struct ieee80211_local *local = sdata->local; struct sockaddr *sa = addr; bool check_dup = true; + bool live = false; int ret; - if (ieee80211_sdata_running(sdata)) - return -EBUSY; + if (ieee80211_sdata_running(sdata)) { + ret = ieee80211_can_powered_addr_change(sdata); + if (ret) + return ret; + + live = true; + } if (sdata->vif.type == NL80211_IFTYPE_MONITOR && - !(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) + !(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) check_dup = false; ret = ieee80211_verify_mac(sdata, sa->sa_data, check_dup); if (ret) return ret; - ret = eth_mac_addr(dev, sa); + if (live) + drv_remove_interface(local, sdata); + ret = eth_mac_addr(sdata->dev, sa); - if (ret == 0) + if (ret == 0) { memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); + ether_addr_copy(sdata->vif.bss_conf.addr, sdata->vif.addr); + } + + /* Regardless of eth_mac_addr() return we still want to add the + * interface back. This should not fail... + */ + if (live) + WARN_ON(drv_add_interface(local, sdata)); return ret; } +static int ieee80211_change_mac(struct net_device *dev, void *addr) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + + /* + * This happens during unregistration if there's a bond device + * active (maybe other cases?) and we must get removed from it. + * But we really don't care anymore if it's not registered now. + */ + if (!dev->ieee80211_ptr->registered) + return 0; + + guard(wiphy)(local->hw.wiphy); + + return _ieee80211_change_mac(sdata, addr); +} + static inline int identical_mac_addr_allowed(int type1, int type2) { return type1 == NL80211_IFTYPE_MONITOR || type2 == NL80211_IFTYPE_MONITOR || type1 == NL80211_IFTYPE_P2P_DEVICE || type2 == NL80211_IFTYPE_P2P_DEVICE || - (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || - (type1 == NL80211_IFTYPE_WDS && - (type2 == NL80211_IFTYPE_WDS || - type2 == NL80211_IFTYPE_AP)) || (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || (type1 == NL80211_IFTYPE_AP_VLAN && (type2 == NL80211_IFTYPE_AP || @@ -257,11 +345,21 @@ static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, struct ieee80211_sub_if_data *nsdata; ASSERT_RTNL(); + lockdep_assert_wiphy(local->hw.wiphy); /* we hold the RTNL here so can safely walk the list */ list_for_each_entry(nsdata, &local->interfaces, list) { if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { /* + * Only OCB and monitor mode may coexist + */ + if ((sdata->vif.type == NL80211_IFTYPE_OCB && + nsdata->vif.type != NL80211_IFTYPE_MONITOR) || + (sdata->vif.type != NL80211_IFTYPE_MONITOR && + nsdata->vif.type == NL80211_IFTYPE_OCB)) + return -EBUSY; + + /* * Allow only a single IBSS interface to be up at any * time. This is restricted because beacon distribution * cannot work properly if both are in the same IBSS. @@ -274,6 +372,12 @@ static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, if (iftype == NL80211_IFTYPE_ADHOC && nsdata->vif.type == NL80211_IFTYPE_ADHOC) return -EBUSY; + /* + * will not add another interface while any channel + * switch is active. + */ + if (nsdata->vif.bss_conf.csa_active) + return -EBUSY; /* * The remaining checks are only performed for interfaces @@ -290,6 +394,13 @@ static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, nsdata->vif.type)) return -ENOTUNIQ; + /* No support for VLAN with MLO yet */ + if (iftype == NL80211_IFTYPE_AP_VLAN && + sdata->wdev.use_4addr && + nsdata->vif.type == NL80211_IFTYPE_AP && + nsdata->vif.valid_links) + return -EOPNOTSUPP; + /* * can only add VLANs to enabled APs */ @@ -299,15 +410,19 @@ static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, } } - return 0; + return ieee80211_check_combinations(sdata, NULL, 0, 0, -1); } -static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata) +static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata, + enum nl80211_iftype iftype) { int n_queues = sdata->local->hw.queues; int i; - if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { + if (iftype == NL80211_IFTYPE_NAN) + return 0; + + if (iftype != NL80211_IFTYPE_P2P_DEVICE) { for (i = 0; i < IEEE80211_NUM_ACS; i++) { if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == IEEE80211_INVAL_HW_QUEUE)) @@ -318,9 +433,10 @@ static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata) } } - if ((sdata->vif.type != NL80211_IFTYPE_AP && - sdata->vif.type != NL80211_IFTYPE_MESH_POINT) || - !(sdata->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)) { + if ((iftype != NL80211_IFTYPE_AP && + iftype != NL80211_IFTYPE_P2P_GO && + iftype != NL80211_IFTYPE_MESH_POINT) || + !ieee80211_hw_check(&sdata->local->hw, QUEUE_CONTROL)) { sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; return 0; } @@ -334,11 +450,682 @@ static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata) return 0; } +static int ieee80211_open(struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + int err; + + /* fail early if user set an invalid address */ + if (!is_valid_ether_addr(dev->dev_addr)) + return -EADDRNOTAVAIL; + + guard(wiphy)(sdata->local->hw.wiphy); + + err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); + if (err) + return err; + + return ieee80211_do_open(&sdata->wdev, true); +} + +static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_down) +{ + struct ieee80211_local *local = sdata->local; + unsigned long flags; + struct sk_buff_head freeq; + struct sk_buff *skb, *tmp; + u32 hw_reconf_flags = 0; + int i, flushed; + struct ps_data *ps; + struct cfg80211_chan_def chandef; + bool cancel_scan; + struct cfg80211_nan_func *func; + + lockdep_assert_wiphy(local->hw.wiphy); + + clear_bit(SDATA_STATE_RUNNING, &sdata->state); + synchronize_rcu(); /* flush _ieee80211_wake_txqs() */ + + cancel_scan = rcu_access_pointer(local->scan_sdata) == sdata; + if (cancel_scan) + ieee80211_scan_cancel(local); + + ieee80211_roc_purge(local, sdata); + + switch (sdata->vif.type) { + case NL80211_IFTYPE_STATION: + ieee80211_mgd_stop(sdata); + break; + case NL80211_IFTYPE_ADHOC: + ieee80211_ibss_stop(sdata); + break; + case NL80211_IFTYPE_MONITOR: + list_del_rcu(&sdata->u.mntr.list); + break; + case NL80211_IFTYPE_AP_VLAN: + ieee80211_apvlan_link_clear(sdata); + break; + default: + break; + } + + /* + * Remove all stations associated with this interface. + * + * This must be done before calling ops->remove_interface() + * because otherwise we can later invoke ops->sta_notify() + * whenever the STAs are removed, and that invalidates driver + * assumptions about always getting a vif pointer that is valid + * (because if we remove a STA after ops->remove_interface() + * the driver will have removed the vif info already!) + * + * For AP_VLANs stations may exist since there's nothing else that + * would have removed them, but in other modes there shouldn't + * be any stations. + */ + flushed = sta_info_flush(sdata, -1); + WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP_VLAN && flushed > 0); + + /* don't count this interface for allmulti while it is down */ + if (sdata->flags & IEEE80211_SDATA_ALLMULTI) + atomic_dec(&local->iff_allmultis); + + if (sdata->vif.type == NL80211_IFTYPE_AP) { + local->fif_pspoll--; + local->fif_probe_req--; + } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { + local->fif_probe_req--; + } + + if (sdata->dev) { + netif_addr_lock_bh(sdata->dev); + spin_lock_bh(&local->filter_lock); + __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, + sdata->dev->addr_len); + spin_unlock_bh(&local->filter_lock); + netif_addr_unlock_bh(sdata->dev); + } + + timer_delete_sync(&local->dynamic_ps_timer); + wiphy_work_cancel(local->hw.wiphy, &local->dynamic_ps_enable_work); + + WARN(ieee80211_vif_is_mld(&sdata->vif), + "destroying interface with valid links 0x%04x\n", + sdata->vif.valid_links); + + sdata->vif.bss_conf.csa_active = false; + if (sdata->vif.type == NL80211_IFTYPE_STATION) + sdata->deflink.u.mgd.csa.waiting_bcn = false; + ieee80211_vif_unblock_queues_csa(sdata); + + wiphy_work_cancel(local->hw.wiphy, &sdata->deflink.csa.finalize_work); + wiphy_work_cancel(local->hw.wiphy, + &sdata->deflink.color_change_finalize_work); + wiphy_delayed_work_cancel(local->hw.wiphy, + &sdata->deflink.dfs_cac_timer_work); + + if (sdata->wdev.links[0].cac_started) { + chandef = sdata->vif.bss_conf.chanreq.oper; + WARN_ON(local->suspended); + ieee80211_link_release_channel(&sdata->deflink); + cfg80211_cac_event(sdata->dev, &chandef, + NL80211_RADAR_CAC_ABORTED, + GFP_KERNEL, 0); + } + + if (sdata->vif.type == NL80211_IFTYPE_AP) { + WARN_ON(!list_empty(&sdata->u.ap.vlans)); + } else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { + /* remove all packets in parent bc_buf pointing to this dev */ + ps = &sdata->bss->ps; + + spin_lock_irqsave(&ps->bc_buf.lock, flags); + skb_queue_walk_safe(&ps->bc_buf, skb, tmp) { + if (skb->dev == sdata->dev) { + __skb_unlink(skb, &ps->bc_buf); + local->total_ps_buffered--; + ieee80211_free_txskb(&local->hw, skb); + } + } + spin_unlock_irqrestore(&ps->bc_buf.lock, flags); + } + + if (going_down) + local->open_count--; + + switch (sdata->vif.type) { + case NL80211_IFTYPE_AP_VLAN: + list_del(&sdata->u.vlan.list); + RCU_INIT_POINTER(sdata->vif.bss_conf.chanctx_conf, NULL); + /* see comment in the default case below */ + ieee80211_free_keys(sdata, true); + /* no need to tell driver */ + break; + case NL80211_IFTYPE_MONITOR: + local->monitors--; + + if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) && + !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) { + + local->virt_monitors--; + if (local->virt_monitors == 0) { + local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; + hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; + } + + ieee80211_adjust_monitor_flags(sdata, -1); + } + break; + case NL80211_IFTYPE_NAN: + /* clean all the functions */ + spin_lock_bh(&sdata->u.nan.func_lock); + + idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, i) { + idr_remove(&sdata->u.nan.function_inst_ids, i); + cfg80211_free_nan_func(func); + } + idr_destroy(&sdata->u.nan.function_inst_ids); + + spin_unlock_bh(&sdata->u.nan.func_lock); + break; + default: + wiphy_work_cancel(sdata->local->hw.wiphy, &sdata->work); + /* + * When we get here, the interface is marked down. + * Free the remaining keys, if there are any + * (which can happen in AP mode if userspace sets + * keys before the interface is operating) + * + * Force the key freeing to always synchronize_net() + * to wait for the RX path in case it is using this + * interface enqueuing frames at this very time on + * another CPU. + */ + ieee80211_free_keys(sdata, true); + skb_queue_purge(&sdata->skb_queue); + skb_queue_purge(&sdata->status_queue); + } + + /* + * Since ieee80211_free_txskb() may issue __dev_queue_xmit() + * which should be called with interrupts enabled, reclamation + * is done in two phases: + */ + __skb_queue_head_init(&freeq); + + /* unlink from local queues... */ + spin_lock_irqsave(&local->queue_stop_reason_lock, flags); + for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { + skb_queue_walk_safe(&local->pending[i], skb, tmp) { + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + if (info->control.vif == &sdata->vif) { + __skb_unlink(skb, &local->pending[i]); + __skb_queue_tail(&freeq, skb); + } + } + } + spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); + + /* ... and perform actual reclamation with interrupts enabled. */ + skb_queue_walk_safe(&freeq, skb, tmp) { + __skb_unlink(skb, &freeq); + ieee80211_free_txskb(&local->hw, skb); + } + + if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + ieee80211_txq_remove_vlan(local, sdata); + + if (sdata->vif.txq) + ieee80211_txq_purge(sdata->local, to_txq_info(sdata->vif.txq)); + + sdata->bss = NULL; + + if (local->open_count == 0) + ieee80211_clear_tx_pending(local); + + sdata->vif.bss_conf.beacon_int = 0; + + /* + * If the interface goes down while suspended, presumably because + * the device was unplugged and that happens before our resume, + * then the driver is already unconfigured and the remainder of + * this function isn't needed. + * XXX: what about WoWLAN? If the device has software state, e.g. + * memory allocated, it might expect teardown commands from + * mac80211 here? + */ + if (local->suspended) { + WARN_ON(local->wowlan); + WARN_ON(rcu_access_pointer(local->monitor_sdata)); + return; + } + + switch (sdata->vif.type) { + case NL80211_IFTYPE_AP_VLAN: + break; + case NL80211_IFTYPE_MONITOR: + if (local->virt_monitors == 0) + ieee80211_del_virtual_monitor(local); + + ieee80211_recalc_idle(local); + ieee80211_recalc_offload(local); + + if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) && + !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) + break; + + ieee80211_link_release_channel(&sdata->deflink); + fallthrough; + default: + if (!going_down) + break; + drv_remove_interface(local, sdata); + + /* Clear private driver data to prevent reuse */ + memset(sdata->vif.drv_priv, 0, local->hw.vif_data_size); + } + + ieee80211_recalc_ps(local); + + if (cancel_scan) + wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work); + + if (local->open_count == 0) { + ieee80211_stop_device(local, false); + + /* no reconfiguring after stop! */ + return; + } + + /* do after stop to avoid reconfiguring when we stop anyway */ + ieee80211_configure_filter(local); + ieee80211_hw_config(local, -1, hw_reconf_flags); + + /* Passing NULL means an interface is picked for configuration */ + if (local->virt_monitors == local->open_count) + ieee80211_add_virtual_monitor(local, NULL); +} + +void ieee80211_stop_mbssid(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_sub_if_data *tx_sdata; + struct ieee80211_bss_conf *link_conf, *tx_bss_conf; + struct ieee80211_link_data *tx_link, *link; + unsigned int link_id; + + lockdep_assert_wiphy(sdata->local->hw.wiphy); + + /* Check if any of the links of current sdata is an MBSSID. */ + for_each_vif_active_link(&sdata->vif, link_conf, link_id) { + tx_bss_conf = sdata_dereference(link_conf->tx_bss_conf, sdata); + if (!tx_bss_conf) + continue; + + tx_sdata = vif_to_sdata(tx_bss_conf->vif); + RCU_INIT_POINTER(link_conf->tx_bss_conf, NULL); + + /* If we are not tx sdata reset tx sdata's tx_bss_conf to avoid recusrion + * while closing tx sdata at the end of outer loop below. + */ + if (sdata != tx_sdata) { + tx_link = sdata_dereference(tx_sdata->link[tx_bss_conf->link_id], + tx_sdata); + if (!tx_link) + continue; + + RCU_INIT_POINTER(tx_link->conf->tx_bss_conf, NULL); + } + + /* loop through sdatas to find if any of their links + * belong to same MBSSID set as the one getting deleted. + */ + for_each_sdata_link(tx_sdata->local, link) { + struct ieee80211_sub_if_data *link_sdata = link->sdata; + + if (link_sdata == sdata || link_sdata == tx_sdata || + rcu_access_pointer(link->conf->tx_bss_conf) != tx_bss_conf) + continue; + + RCU_INIT_POINTER(link->conf->tx_bss_conf, NULL); + + /* Remove all links of matching MLD until dynamic link + * removal can be supported. + */ + cfg80211_stop_iface(link_sdata->wdev.wiphy, &link_sdata->wdev, + GFP_KERNEL); + } + + /* If we are not tx sdata, remove links of tx sdata and proceed */ + if (sdata != tx_sdata && ieee80211_sdata_running(tx_sdata)) + cfg80211_stop_iface(tx_sdata->wdev.wiphy, + &tx_sdata->wdev, GFP_KERNEL); + } +} + +static int ieee80211_stop(struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + /* close dependent VLAN interfaces before locking wiphy */ + if (sdata->vif.type == NL80211_IFTYPE_AP) { + struct ieee80211_sub_if_data *vlan, *tmpsdata; + + list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, + u.vlan.list) + dev_close(vlan->dev); + } + + guard(wiphy)(sdata->local->hw.wiphy); + + wiphy_work_cancel(sdata->local->hw.wiphy, &sdata->activate_links_work); + + /* Close the dependent MBSSID interfaces with wiphy lock as we may be + * terminating its partner links too in case of MLD. + */ + if (sdata->vif.type == NL80211_IFTYPE_AP) + ieee80211_stop_mbssid(sdata); + + ieee80211_do_stop(sdata, true); + + return 0; +} + +static void ieee80211_set_multicast_list(struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + int allmulti, sdata_allmulti; + + allmulti = !!(dev->flags & IFF_ALLMULTI); + sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); + + if (allmulti != sdata_allmulti) { + if (dev->flags & IFF_ALLMULTI) + atomic_inc(&local->iff_allmultis); + else + atomic_dec(&local->iff_allmultis); + sdata->flags ^= IEEE80211_SDATA_ALLMULTI; + } + + spin_lock_bh(&local->filter_lock); + __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); + spin_unlock_bh(&local->filter_lock); + wiphy_work_queue(local->hw.wiphy, &local->reconfig_filter); +} + +/* + * Called when the netdev is removed or, by the code below, before + * the interface type changes. + */ +static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) +{ + if (WARN_ON(!list_empty(&sdata->work.entry))) + wiphy_work_cancel(sdata->local->hw.wiphy, &sdata->work); + + /* free extra data */ + ieee80211_free_keys(sdata, false); + + ieee80211_debugfs_remove_netdev(sdata); + + ieee80211_destroy_frag_cache(&sdata->frags); + + if (ieee80211_vif_is_mesh(&sdata->vif)) + ieee80211_mesh_teardown_sdata(sdata); + + ieee80211_vif_clear_links(sdata); + ieee80211_link_stop(&sdata->deflink); +} + +static void ieee80211_uninit(struct net_device *dev) +{ + ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); +} + +static int ieee80211_netdev_setup_tc(struct net_device *dev, + enum tc_setup_type type, void *type_data) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + + return drv_net_setup_tc(local, sdata, dev, type, type_data); +} + +static const struct net_device_ops ieee80211_dataif_ops = { + .ndo_open = ieee80211_open, + .ndo_stop = ieee80211_stop, + .ndo_uninit = ieee80211_uninit, + .ndo_start_xmit = ieee80211_subif_start_xmit, + .ndo_set_rx_mode = ieee80211_set_multicast_list, + .ndo_set_mac_address = ieee80211_change_mac, + .ndo_setup_tc = ieee80211_netdev_setup_tc, +}; + +static u16 ieee80211_monitor_select_queue(struct net_device *dev, + struct sk_buff *skb, + struct net_device *sb_dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_hdr *hdr; + int len_rthdr; + + if (local->hw.queues < IEEE80211_NUM_ACS) + return 0; + + /* reset flags and info before parsing radiotap header */ + memset(info, 0, sizeof(*info)); + + if (!ieee80211_parse_tx_radiotap(skb, dev)) + return 0; /* doesn't matter, frame will be dropped */ + + len_rthdr = ieee80211_get_radiotap_len(skb->data); + hdr = (struct ieee80211_hdr *)(skb->data + len_rthdr); + if (skb->len < len_rthdr + 2 || + skb->len < len_rthdr + ieee80211_hdrlen(hdr->frame_control)) + return 0; /* doesn't matter, frame will be dropped */ + + return ieee80211_select_queue_80211(sdata, skb, hdr); +} + +static const struct net_device_ops ieee80211_monitorif_ops = { + .ndo_open = ieee80211_open, + .ndo_stop = ieee80211_stop, + .ndo_uninit = ieee80211_uninit, + .ndo_start_xmit = ieee80211_monitor_start_xmit, + .ndo_set_rx_mode = ieee80211_set_multicast_list, + .ndo_set_mac_address = ieee80211_change_mac, + .ndo_select_queue = ieee80211_monitor_select_queue, +}; + +static int ieee80211_netdev_fill_forward_path(struct net_device_path_ctx *ctx, + struct net_device_path *path) +{ + struct ieee80211_sub_if_data *sdata; + struct ieee80211_local *local; + struct sta_info *sta; + int ret = -ENOENT; + + sdata = IEEE80211_DEV_TO_SUB_IF(ctx->dev); + local = sdata->local; + + if (!local->ops->net_fill_forward_path) + return -EOPNOTSUPP; + + rcu_read_lock(); + switch (sdata->vif.type) { + case NL80211_IFTYPE_AP_VLAN: + sta = rcu_dereference(sdata->u.vlan.sta); + if (sta) + break; + if (sdata->wdev.use_4addr) + goto out; + if (is_multicast_ether_addr(ctx->daddr)) + goto out; + sta = sta_info_get_bss(sdata, ctx->daddr); + break; + case NL80211_IFTYPE_AP: + if (is_multicast_ether_addr(ctx->daddr)) + goto out; + sta = sta_info_get(sdata, ctx->daddr); + break; + case NL80211_IFTYPE_STATION: + if (sdata->wdev.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) { + sta = sta_info_get(sdata, ctx->daddr); + if (sta && test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { + if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH)) + goto out; + + break; + } + } + + sta = sta_info_get(sdata, sdata->deflink.u.mgd.bssid); + break; + default: + goto out; + } + + if (!sta) + goto out; + + ret = drv_net_fill_forward_path(local, sdata, &sta->sta, ctx, path); +out: + rcu_read_unlock(); + + return ret; +} + +static const struct net_device_ops ieee80211_dataif_8023_ops = { + .ndo_open = ieee80211_open, + .ndo_stop = ieee80211_stop, + .ndo_uninit = ieee80211_uninit, + .ndo_start_xmit = ieee80211_subif_start_xmit_8023, + .ndo_set_rx_mode = ieee80211_set_multicast_list, + .ndo_set_mac_address = ieee80211_change_mac, + .ndo_fill_forward_path = ieee80211_netdev_fill_forward_path, + .ndo_setup_tc = ieee80211_netdev_setup_tc, +}; + +static bool ieee80211_iftype_supports_hdr_offload(enum nl80211_iftype iftype) +{ + 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; + } +} + +static bool ieee80211_set_sdata_offload_flags(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_local *local = sdata->local; + u32 flags; + + flags = sdata->vif.offload_flags; + + if (ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD) && + ieee80211_iftype_supports_hdr_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->virt_monitors) + flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; + } else { + flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; + } + + if (ieee80211_hw_check(&local->hw, SUPPORTS_RX_DECAP_OFFLOAD) && + ieee80211_iftype_supports_hdr_offload(sdata->vif.type)) { + flags |= IEEE80211_OFFLOAD_DECAP_ENABLED; + + if (local->virt_monitors && + !ieee80211_hw_check(&local->hw, SUPPORTS_CONC_MON_RX_DECAP)) + flags &= ~IEEE80211_OFFLOAD_DECAP_ENABLED; + } else { + flags &= ~IEEE80211_OFFLOAD_DECAP_ENABLED; + } + + if (sdata->vif.offload_flags == flags) + return false; + + sdata->vif.offload_flags = flags; + ieee80211_check_fast_rx_iface(sdata); + 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_hdr_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; + + lockdep_assert_wiphy(local->hw.wiphy); + + list_for_each_entry(sdata, &local->interfaces, list) { + if (!ieee80211_sdata_running(sdata)) + continue; + + ieee80211_recalc_sdata_offload(sdata); + } +} + 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; + u32 flags = sdata->u.mntr.flags; #define ADJUST(_f, _s) do { \ if (flags & MONITOR_FLAG_##_f) \ @@ -350,6 +1137,8 @@ void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, ADJUST(CONTROL, control); ADJUST(CONTROL, pspoll); ADJUST(OTHER_BSS, other_bss); + if (!(flags & MONITOR_FLAG_SKIP_TX)) + local->tx_mntrs += offset; #undef ADJUST } @@ -360,7 +1149,7 @@ static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) int i; for (i = 0; i < IEEE80211_NUM_ACS; i++) { - if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) + 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; @@ -370,55 +1159,118 @@ static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; } -int ieee80211_add_virtual_monitor(struct ieee80211_local *local) +static void ieee80211_sdata_init(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata) +{ + sdata->local = local; + + INIT_LIST_HEAD(&sdata->key_list); + + /* + * Initialize the default link, so we can use link_id 0 for non-MLD, + * and that continues to work for non-MLD-aware drivers that use just + * vif.bss_conf instead of vif.link_conf. + * + * Note that we never change this, so if link ID 0 isn't used in an + * MLD connection, we get a separate allocation for it. + */ + ieee80211_link_init(sdata, -1, &sdata->deflink, &sdata->vif.bss_conf); +} + +int ieee80211_add_virtual_monitor(struct ieee80211_local *local, + struct ieee80211_sub_if_data *creator_sdata) { struct ieee80211_sub_if_data *sdata; int ret; - if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) - return 0; - ASSERT_RTNL(); + lockdep_assert_wiphy(local->hw.wiphy); - if (local->monitor_sdata) + if (ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) return 0; + /* Already have a monitor set up, configure it */ + sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); + if (sdata) + goto configure_monitor; + 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->wdev.wiphy = local->hw.wiphy; + + ieee80211_sdata_init(local, sdata); 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; + if (ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) { + 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); + set_bit(SDATA_STATE_RUNNING, &sdata->state); + + ret = ieee80211_check_queues(sdata, NL80211_IFTYPE_MONITOR); if (ret) { kfree(sdata); return ret; } - ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, - IEEE80211_CHANCTX_EXCLUSIVE); + mutex_lock(&local->iflist_mtx); + rcu_assign_pointer(local->monitor_sdata, sdata); + mutex_unlock(&local->iflist_mtx); + + ret = ieee80211_link_use_channel(&sdata->deflink, &local->monitor_chanreq, + IEEE80211_CHANCTX_EXCLUSIVE); 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; } - mutex_lock(&local->iflist_mtx); - rcu_assign_pointer(local->monitor_sdata, sdata); - mutex_unlock(&local->iflist_mtx); + skb_queue_head_init(&sdata->skb_queue); + skb_queue_head_init(&sdata->status_queue); + wiphy_work_init(&sdata->work, ieee80211_iface_work); + +configure_monitor: + /* Copy in the MU-MIMO configuration if set */ + if (!creator_sdata) { + struct ieee80211_sub_if_data *other; + + list_for_each_entry(other, &local->mon_list, list) { + if (!other->vif.bss_conf.mu_mimo_owner) + continue; + + creator_sdata = other; + break; + } + } + + if (creator_sdata && creator_sdata->vif.bss_conf.mu_mimo_owner) { + sdata->vif.bss_conf.mu_mimo_owner = true; + memcpy(&sdata->vif.bss_conf.mu_group, + &creator_sdata->vif.bss_conf.mu_group, + sizeof(sdata->vif.bss_conf.mu_group)); + memcpy(&sdata->u.mntr.mu_follow_addr, + creator_sdata->u.mntr.mu_follow_addr, ETH_ALEN); + + ieee80211_link_info_change_notify(sdata, &sdata->deflink, + BSS_CHANGED_MU_GROUPS); + } return 0; } @@ -427,10 +1279,11 @@ void ieee80211_del_virtual_monitor(struct ieee80211_local *local) { struct ieee80211_sub_if_data *sdata; - if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) + if (ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) return; ASSERT_RTNL(); + lockdep_assert_wiphy(local->hw.wiphy); mutex_lock(&local->iflist_mtx); @@ -441,14 +1294,16 @@ void ieee80211_del_virtual_monitor(struct ieee80211_local *local) return; } - rcu_assign_pointer(local->monitor_sdata, NULL); - mutex_unlock(&local->iflist_mtx); + clear_bit(SDATA_STATE_RUNNING, &sdata->state); + ieee80211_link_release_channel(&sdata->deflink); - synchronize_net(); + if (ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) + drv_remove_interface(local, sdata); - ieee80211_vif_release_channel(sdata); + RCU_INIT_POINTER(local->monitor_sdata, NULL); + mutex_unlock(&local->iflist_mtx); - drv_remove_interface(local, sdata); + synchronize_net(); kfree(sdata); } @@ -463,16 +1318,13 @@ 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; + u64 changed = 0; int res; u32 hw_reconf_flags = 0; + lockdep_assert_wiphy(local->hw.wiphy); + 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; @@ -487,9 +1339,20 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) 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.chanreq = master->vif.bss_conf.chanreq; + + sdata->crypto_tx_tailroom_needed_cnt += + master->crypto_tx_tailroom_needed_cnt; + + ieee80211_apvlan_link_setup(sdata); + break; } case NL80211_IFTYPE_AP: @@ -500,23 +1363,27 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) 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: + case NL80211_IFTYPE_WDS: /* cannot happen */ WARN_ON(1); break; } if (local->open_count == 0) { + /* here we can consider everything in good order (again) */ + local->reconfig_failure = false; + 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); @@ -527,9 +1394,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) * 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); + eth_hw_addr_set(dev, local->hw.wiphy->perm_addr); memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); if (!is_valid_ether_addr(dev->dev_addr)) { @@ -538,55 +1403,69 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) } } + sdata->vif.addr_valid = sdata->vif.type != NL80211_IFTYPE_MONITOR || + (sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE); 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); + if (sdata->bss->active) { + struct ieee80211_link_data *link; + + for_each_link_data(sdata, link) { + ieee80211_link_vlan_copy_chanctx(link); + } + 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) { + if ((sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) || + ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) { 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; + } else { + /* add/configure if there is no non-monitor interface */ + if (local->virt_monitors == local->open_count) { + res = ieee80211_add_virtual_monitor(local, sdata); + if (res) + goto err_stop; + } + + local->virt_monitors++; + + /* must be before the call to ieee80211_configure_filter */ + if (local->virt_monitors == 1) { + local->hw.conf.flags |= IEEE80211_CONF_MONITOR; + hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; + } } - /* 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_offload(local); ieee80211_recalc_idle(local); - mutex_unlock(&local->mtx); netif_carrier_on(dev); + list_add_tail_rcu(&sdata->u.mntr.list, &local->mon_list); 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; - res = ieee80211_check_queues(sdata); + + ieee80211_set_vif_encap_ops(sdata); + res = ieee80211_check_queues(sdata, + ieee80211_vif_type_p2p(&sdata->vif)); if (res) goto err_del_interface; } @@ -600,19 +1479,27 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) local->fif_probe_req++; } - if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) + 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); + ieee80211_link_info_change_notify(sdata, &sdata->deflink, + 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 */ @@ -620,38 +1507,13 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) } /* - * set default queue parameters so drivers don't + * Set default queue parameters so drivers don't * need to initialise the hardware if the hardware - * doesn't start up with sane defaults + * doesn't start up with sane defaults. + * Enable QoS for anything but station interfaces. */ - ieee80211_set_wmm_default(sdata, true); - } - - set_bit(SDATA_STATE_RUNNING, &sdata->state); - - if (sdata->vif.type == 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); - } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { - rcu_assign_pointer(local->p2p_sdata, sdata); + ieee80211_set_wmm_default(&sdata->deflink, true, + sdata->vif.type != NL80211_IFTYPE_STATION); } /* @@ -662,50 +1524,24 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) if (sdata->flags & IEEE80211_SDATA_ALLMULTI) atomic_inc(&local->iff_allmultis); - if (sdata->flags & IEEE80211_SDATA_PROMISC) - atomic_inc(&local->iff_promiscs); - if (coming_up) local->open_count++; - if (hw_reconf_flags) - ieee80211_hw_config(local, hw_reconf_flags); - - ieee80211_recalc_ps(local, -1); - - if (sdata->vif.type == NL80211_IFTYPE_MONITOR || - sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { - /* XXX: for AP_VLAN, actually track AP queues */ - 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); - } + if (local->open_count == 1) + ieee80211_hw_conf_init(local); + else if (hw_reconf_flags) + ieee80211_hw_config(local, -1, hw_reconf_flags); + + ieee80211_recalc_ps(local); + + set_bit(SDATA_STATE_RUNNING, &sdata->state); return 0; err_del_interface: drv_remove_interface(local, sdata); err_stop: if (!local->open_count) - drv_stop(local); + drv_stop(local, false); err_del_bss: sdata->bss = NULL; if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) @@ -715,502 +1551,256 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) return res; } -static int ieee80211_open(struct net_device *dev) +static void ieee80211_if_setup(struct net_device *dev) { - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - int err; - - /* fail early if user set an invalid address */ - if (!is_valid_ether_addr(dev->dev_addr)) - return -EADDRNOTAVAIL; - - err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); - if (err) - return err; - - return ieee80211_do_open(&sdata->wdev, true); + ether_setup(dev); + dev->priv_flags &= ~IFF_TX_SKB_SHARING; + dev->priv_flags |= IFF_NO_QUEUE; + dev->netdev_ops = &ieee80211_dataif_ops; + dev->needs_free_netdev = true; } -static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, - bool going_down) +static void ieee80211_iface_process_skb(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb) { - struct ieee80211_local *local = sdata->local; - unsigned long flags; - struct sk_buff *skb, *tmp; - u32 hw_reconf_flags = 0; - int i, flushed; - struct ps_data *ps; - - clear_bit(SDATA_STATE_RUNNING, &sdata->state); - - if (rcu_access_pointer(local->scan_sdata) == sdata) - ieee80211_scan_cancel(local); - - /* - * Stop TX on this interface first. - */ - if (sdata->dev) - netif_tx_stop_all_queues(sdata->dev); - - ieee80211_roc_purge(local, sdata); + struct ieee80211_mgmt *mgmt = (void *)skb->data; - if (sdata->vif.type == NL80211_IFTYPE_STATION) - ieee80211_mgd_stop(sdata); + lockdep_assert_wiphy(local->hw.wiphy); - /* - * Remove all stations associated with this interface. - * - * This must be done before calling ops->remove_interface() - * because otherwise we can later invoke ops->sta_notify() - * whenever the STAs are removed, and that invalidates driver - * assumptions about always getting a vif pointer that is valid - * (because if we remove a STA after ops->remove_interface() - * the driver will have removed the vif info already!) - * - * This is relevant only in WDS mode, in all other modes we've - * already removed all stations when disconnecting or similar, - * so warn otherwise. - * - * We call sta_info_flush_cleanup() later, to combine RCU waits. - */ - flushed = sta_info_flush_defer(sdata); - WARN_ON_ONCE((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) || - (sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1)); + if (ieee80211_is_action(mgmt->frame_control) && + mgmt->u.action.category == WLAN_CATEGORY_BACK) { + struct sta_info *sta; + int len = skb->len; - /* don't count this interface for promisc/allmulti while it is down */ - if (sdata->flags & IEEE80211_SDATA_ALLMULTI) - atomic_dec(&local->iff_allmultis); - - if (sdata->flags & IEEE80211_SDATA_PROMISC) - atomic_dec(&local->iff_promiscs); - - if (sdata->vif.type == NL80211_IFTYPE_AP) { - local->fif_pspoll--; - local->fif_probe_req--; - } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { - local->fif_probe_req--; - } - - if (sdata->dev) { - netif_addr_lock_bh(sdata->dev); - spin_lock_bh(&local->filter_lock); - __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, - sdata->dev->addr_len); - spin_unlock_bh(&local->filter_lock); - netif_addr_unlock_bh(sdata->dev); - } - - del_timer_sync(&local->dynamic_ps_timer); - cancel_work_sync(&local->dynamic_ps_enable_work); - - cancel_work_sync(&sdata->recalc_smps); + sta = sta_info_get_bss(sdata, mgmt->sa); + if (sta) { + switch (mgmt->u.action.u.addba_req.action_code) { + case WLAN_ACTION_ADDBA_REQ: + ieee80211_process_addba_request(local, sta, + mgmt, len); + break; + case WLAN_ACTION_ADDBA_RESP: + ieee80211_process_addba_resp(local, sta, + mgmt, len); + break; + case WLAN_ACTION_DELBA: + ieee80211_process_delba(sdata, sta, + mgmt, len); + break; + default: + WARN_ON(1); + break; + } + } + } else if (ieee80211_is_action(mgmt->frame_control) && + mgmt->u.action.category == WLAN_CATEGORY_HT) { + switch (mgmt->u.action.u.ht_smps.action) { + case WLAN_HT_ACTION_NOTIFY_CHANWIDTH: { + u8 chanwidth = mgmt->u.action.u.ht_notify_cw.chanwidth; + struct ieee80211_rx_status *status; + struct link_sta_info *link_sta; + struct sta_info *sta; - cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); + sta = sta_info_get_bss(sdata, mgmt->sa); + if (!sta) + break; - if (sdata->wdev.cac_started) { - WARN_ON(local->suspended); - mutex_lock(&local->iflist_mtx); - ieee80211_vif_release_channel(sdata); - mutex_unlock(&local->iflist_mtx); - cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED, - GFP_KERNEL); - } + status = IEEE80211_SKB_RXCB(skb); + if (!status->link_valid) + link_sta = &sta->deflink; + else + link_sta = rcu_dereference_protected(sta->link[status->link_id], + lockdep_is_held(&local->hw.wiphy->mtx)); + if (link_sta) + ieee80211_ht_handle_chanwidth_notif(local, sdata, sta, + link_sta, chanwidth, + status->band); + break; + } + default: + WARN_ON(1); + break; + } + } else if (ieee80211_is_action(mgmt->frame_control) && + mgmt->u.action.category == WLAN_CATEGORY_VHT) { + switch (mgmt->u.action.u.vht_group_notif.action_code) { + case WLAN_VHT_ACTION_OPMODE_NOTIF: { + struct ieee80211_rx_status *status; + enum nl80211_band band; + struct sta_info *sta; + u8 opmode; + + status = IEEE80211_SKB_RXCB(skb); + band = status->band; + opmode = mgmt->u.action.u.vht_opmode_notif.operating_mode; - /* APs need special treatment */ - if (sdata->vif.type == NL80211_IFTYPE_AP) { - struct ieee80211_sub_if_data *vlan, *tmpsdata; + sta = sta_info_get_bss(sdata, mgmt->sa); - /* down all dependent devices, that is VLANs */ - list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, - u.vlan.list) - dev_close(vlan->dev); - WARN_ON(!list_empty(&sdata->u.ap.vlans)); - } else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { - /* remove all packets in parent bc_buf pointing to this dev */ - ps = &sdata->bss->ps; + if (sta) + ieee80211_vht_handle_opmode(sdata, + &sta->deflink, + opmode, band); - spin_lock_irqsave(&ps->bc_buf.lock, flags); - skb_queue_walk_safe(&ps->bc_buf, skb, tmp) { - if (skb->dev == sdata->dev) { - __skb_unlink(skb, &ps->bc_buf); - local->total_ps_buffered--; - ieee80211_free_txskb(&local->hw, skb); - } + break; } - spin_unlock_irqrestore(&ps->bc_buf.lock, flags); - } - - if (going_down) - local->open_count--; - - switch (sdata->vif.type) { - case NL80211_IFTYPE_AP_VLAN: - list_del(&sdata->u.vlan.list); - rcu_assign_pointer(sdata->vif.chanctx_conf, NULL); - /* no need to tell driver */ - break; - case NL80211_IFTYPE_MONITOR: - if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { - local->cooked_mntrs--; + case WLAN_VHT_ACTION_GROUPID_MGMT: + ieee80211_process_mu_groups(sdata, &sdata->deflink, + mgmt); + break; + default: + WARN_ON(1); break; } - - local->monitors--; - if (local->monitors == 0) { - local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; - hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; + } else if (ieee80211_is_action(mgmt->frame_control) && + mgmt->u.action.category == WLAN_CATEGORY_S1G) { + switch (mgmt->u.action.u.s1g.action_code) { + case WLAN_S1G_TWT_TEARDOWN: + case WLAN_S1G_TWT_SETUP: + ieee80211_s1g_rx_twt_action(sdata, skb); + break; + default: + break; + } + } else if (ieee80211_is_action(mgmt->frame_control) && + mgmt->u.action.category == WLAN_CATEGORY_PROTECTED_EHT) { + if (sdata->vif.type == NL80211_IFTYPE_STATION) { + switch (mgmt->u.action.u.ttlm_req.action_code) { + case WLAN_PROTECTED_EHT_ACTION_TTLM_REQ: + ieee80211_process_neg_ttlm_req(sdata, mgmt, + skb->len); + break; + case WLAN_PROTECTED_EHT_ACTION_TTLM_RES: + ieee80211_process_neg_ttlm_res(sdata, mgmt, + skb->len); + break; + case WLAN_PROTECTED_EHT_ACTION_TTLM_TEARDOWN: + ieee80211_process_ttlm_teardown(sdata); + break; + case WLAN_PROTECTED_EHT_ACTION_LINK_RECONFIG_RESP: + ieee80211_process_ml_reconf_resp(sdata, mgmt, + skb->len); + break; + case WLAN_PROTECTED_EHT_ACTION_EPCS_ENABLE_RESP: + ieee80211_process_epcs_ena_resp(sdata, mgmt, + skb->len); + break; + case WLAN_PROTECTED_EHT_ACTION_EPCS_ENABLE_TEARDOWN: + ieee80211_process_epcs_teardown(sdata, mgmt, + skb->len); + break; + default: + 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; + struct sta_info *sta; - ieee80211_adjust_monitor_flags(sdata, -1); - break; - case NL80211_IFTYPE_P2P_DEVICE: - /* relies on synchronize_rcu() below */ - rcu_assign_pointer(local->p2p_sdata, NULL); - /* fall through */ - default: - cancel_work_sync(&sdata->work); /* - * When we get here, the interface is marked down. + * So the frame isn't mgmt, but frame_control + * is at the right place anyway, of course, so + * the if statement is correct. * - * sta_info_flush_cleanup() requires rcu_barrier() - * first to wait for the station call_rcu() calls - * to complete, and we also need synchronize_rcu() - * to wait for the RX path in case it is using the - * interface and enqueuing frames at this very time on - * another CPU. + * Warn if we have other data frame types here, + * they must not get here. */ - synchronize_rcu(); - rcu_barrier(); - sta_info_flush_cleanup(sdata); - + WARN_ON(hdr->frame_control & + cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); + WARN_ON(!(hdr->seq_ctrl & + cpu_to_le16(IEEE80211_SCTL_FRAG))); /* - * Free all remaining keys, there shouldn't be any, - * except maybe in WDS mode? + * This was a fragment of a frame, received while + * a block-ack session was active. That cannot be + * right, so terminate the session. */ - ieee80211_free_keys(sdata); - - /* fall through */ - case NL80211_IFTYPE_AP: - skb_queue_purge(&sdata->skb_queue); - } - - sdata->bss = NULL; - - spin_lock_irqsave(&local->queue_stop_reason_lock, flags); - for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { - skb_queue_walk_safe(&local->pending[i], skb, tmp) { - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - if (info->control.vif == &sdata->vif) { - __skb_unlink(skb, &local->pending[i]); - ieee80211_free_txskb(&local->hw, skb); - } + sta = sta_info_get_bss(sdata, mgmt->sa); + if (sta) { + u16 tid = ieee80211_get_tid(hdr); + + __ieee80211_stop_rx_ba_session( + sta, tid, WLAN_BACK_RECIPIENT, + WLAN_REASON_QSTA_REQUIRE_SETUP, + true); } - } - spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); - - if (local->open_count == 0) - ieee80211_clear_tx_pending(local); - - /* - * If the interface goes down while suspended, presumably because - * the device was unplugged and that happens before our resume, - * then the driver is already unconfigured and the remainder of - * this function isn't needed. - * XXX: what about WoWLAN? If the device has software state, e.g. - * memory allocated, it might expect teardown commands from - * mac80211 here? - */ - if (local->suspended) { - WARN_ON(local->wowlan); - WARN_ON(rtnl_dereference(local->monitor_sdata)); - return; - } - - switch (sdata->vif.type) { - case NL80211_IFTYPE_AP_VLAN: + } else switch (sdata->vif.type) { + case NL80211_IFTYPE_STATION: + ieee80211_sta_rx_queued_mgmt(sdata, skb); break; - case NL80211_IFTYPE_MONITOR: - if (local->monitors == 0) - ieee80211_del_virtual_monitor(local); - - mutex_lock(&local->mtx); - ieee80211_recalc_idle(local); - mutex_unlock(&local->mtx); - - if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) + case NL80211_IFTYPE_ADHOC: + ieee80211_ibss_rx_queued_mgmt(sdata, skb); + break; + case NL80211_IFTYPE_MESH_POINT: + if (!ieee80211_vif_is_mesh(&sdata->vif)) break; - - /* fall through */ + ieee80211_mesh_rx_queued_mgmt(sdata, skb); + break; default: - if (going_down) - drv_remove_interface(local, sdata); - } - - ieee80211_recalc_ps(local, -1); - - if (local->open_count == 0) { - ieee80211_stop_device(local); - - /* no reconfiguring after stop! */ - return; + WARN(1, "frame for unexpected interface type"); + break; } - - /* do after stop to avoid reconfiguring when we stop anyway */ - ieee80211_configure_filter(local); - ieee80211_hw_config(local, hw_reconf_flags); - - if (local->monitors == local->open_count) - ieee80211_add_virtual_monitor(local); -} - -static int ieee80211_stop(struct net_device *dev) -{ - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - - ieee80211_do_stop(sdata, true); - - return 0; } -static void ieee80211_set_multicast_list(struct net_device *dev) +static void ieee80211_iface_process_status(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb) { - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct ieee80211_local *local = sdata->local; - int allmulti, promisc, sdata_allmulti, sdata_promisc; - - allmulti = !!(dev->flags & IFF_ALLMULTI); - promisc = !!(dev->flags & IFF_PROMISC); - sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); - sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); - - if (allmulti != sdata_allmulti) { - if (dev->flags & IFF_ALLMULTI) - atomic_inc(&local->iff_allmultis); - else - atomic_dec(&local->iff_allmultis); - sdata->flags ^= IEEE80211_SDATA_ALLMULTI; - } - - if (promisc != sdata_promisc) { - if (dev->flags & IFF_PROMISC) - atomic_inc(&local->iff_promiscs); - else - atomic_dec(&local->iff_promiscs); - sdata->flags ^= IEEE80211_SDATA_PROMISC; + struct ieee80211_mgmt *mgmt = (void *)skb->data; + + if (ieee80211_is_action(mgmt->frame_control) && + mgmt->u.action.category == WLAN_CATEGORY_S1G) { + switch (mgmt->u.action.u.s1g.action_code) { + case WLAN_S1G_TWT_TEARDOWN: + case WLAN_S1G_TWT_SETUP: + ieee80211_s1g_status_twt_action(sdata, skb); + break; + default: + break; + } } - - /* - * TODO: If somebody needs this on AP interfaces, - * it can be enabled easily but multicast - * addresses from VLANs need to be synced. - */ - if (sdata->vif.type != NL80211_IFTYPE_MONITOR && - sdata->vif.type != NL80211_IFTYPE_AP_VLAN && - sdata->vif.type != NL80211_IFTYPE_AP) - drv_set_multicast_list(local, sdata, &dev->mc); - - spin_lock_bh(&local->filter_lock); - __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); - spin_unlock_bh(&local->filter_lock); - ieee80211_queue_work(&local->hw, &local->reconfig_filter); -} - -/* - * Called when the netdev is removed or, by the code below, before - * the interface type changes. - */ -static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) -{ - int flushed; - int i; - - /* free extra data */ - ieee80211_free_keys(sdata); - - ieee80211_debugfs_remove_netdev(sdata); - - for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) - __skb_queue_purge(&sdata->fragments[i].skb_list); - sdata->fragment_next = 0; - - if (ieee80211_vif_is_mesh(&sdata->vif)) - mesh_rmc_free(sdata); - - flushed = sta_info_flush(sdata); - WARN_ON(flushed); -} - -static void ieee80211_uninit(struct net_device *dev) -{ - ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); -} - -static u16 ieee80211_netdev_select_queue(struct net_device *dev, - struct sk_buff *skb) -{ - return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); -} - -static const struct net_device_ops ieee80211_dataif_ops = { - .ndo_open = ieee80211_open, - .ndo_stop = ieee80211_stop, - .ndo_uninit = ieee80211_uninit, - .ndo_start_xmit = ieee80211_subif_start_xmit, - .ndo_set_rx_mode = ieee80211_set_multicast_list, - .ndo_change_mtu = ieee80211_change_mtu, - .ndo_set_mac_address = ieee80211_change_mac, - .ndo_select_queue = ieee80211_netdev_select_queue, -}; - -static u16 ieee80211_monitor_select_queue(struct net_device *dev, - struct sk_buff *skb) -{ - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct ieee80211_local *local = sdata->local; - struct ieee80211_hdr *hdr; - struct ieee80211_radiotap_header *rtap = (void *)skb->data; - - if (local->hw.queues < IEEE80211_NUM_ACS) - return 0; - - if (skb->len < 4 || - skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) - return 0; /* doesn't matter, frame will be dropped */ - - hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); - - return ieee80211_select_queue_80211(sdata, skb, hdr); -} - -static const struct net_device_ops ieee80211_monitorif_ops = { - .ndo_open = ieee80211_open, - .ndo_stop = ieee80211_stop, - .ndo_uninit = ieee80211_uninit, - .ndo_start_xmit = ieee80211_monitor_start_xmit, - .ndo_set_rx_mode = ieee80211_set_multicast_list, - .ndo_change_mtu = ieee80211_change_mtu, - .ndo_set_mac_address = ieee80211_change_mac, - .ndo_select_queue = ieee80211_monitor_select_queue, -}; - -static void ieee80211_if_setup(struct net_device *dev) -{ - ether_setup(dev); - dev->priv_flags &= ~IFF_TX_SKB_SHARING; - dev->netdev_ops = &ieee80211_dataif_ops; - dev->destructor = free_netdev; } -static void ieee80211_iface_work(struct work_struct *work) +static void ieee80211_iface_work(struct wiphy *wiphy, struct wiphy_work *work) { struct ieee80211_sub_if_data *sdata = container_of(work, struct ieee80211_sub_if_data, work); struct ieee80211_local *local = sdata->local; struct sk_buff *skb; - struct sta_info *sta; - struct ieee80211_ra_tid *ra_tid; if (!ieee80211_sdata_running(sdata)) return; - if (local->scanning) + if (test_bit(SCAN_SW_SCANNING, &local->scanning)) return; - /* - * ieee80211_queue_work() should have picked up most cases, - * here we'll pick the rest. - */ - if (WARN(local->suspended, - "interface work scheduled while going to suspend\n")) + if (!ieee80211_can_run_worker(local)) return; /* first process frames */ while ((skb = skb_dequeue(&sdata->skb_queue))) { - struct ieee80211_mgmt *mgmt = (void *)skb->data; - - if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { - ra_tid = (void *)&skb->cb; - ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, - ra_tid->tid); - } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { - ra_tid = (void *)&skb->cb; - ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, - ra_tid->tid); - } else if (ieee80211_is_action(mgmt->frame_control) && - mgmt->u.action.category == WLAN_CATEGORY_BACK) { - int len = skb->len; - - mutex_lock(&local->sta_mtx); - sta = sta_info_get_bss(sdata, mgmt->sa); - if (sta) { - switch (mgmt->u.action.u.addba_req.action_code) { - case WLAN_ACTION_ADDBA_REQ: - ieee80211_process_addba_request( - local, sta, mgmt, len); - break; - case WLAN_ACTION_ADDBA_RESP: - ieee80211_process_addba_resp(local, sta, - mgmt, len); - break; - case WLAN_ACTION_DELBA: - ieee80211_process_delba(sdata, sta, - mgmt, len); - break; - default: - WARN_ON(1); - break; - } - } - mutex_unlock(&local->sta_mtx); - } else if (ieee80211_is_data_qos(mgmt->frame_control)) { - struct ieee80211_hdr *hdr = (void *)mgmt; - /* - * So the frame isn't mgmt, but frame_control - * is at the right place anyway, of course, so - * the if statement is correct. - * - * Warn if we have other data frame types here, - * they must not get here. - */ - WARN_ON(hdr->frame_control & - cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); - WARN_ON(!(hdr->seq_ctrl & - cpu_to_le16(IEEE80211_SCTL_FRAG))); - /* - * This was a fragment of a frame, received while - * a block-ack session was active. That cannot be - * right, so terminate the session. - */ - mutex_lock(&local->sta_mtx); - sta = sta_info_get_bss(sdata, mgmt->sa); - if (sta) { - u16 tid = *ieee80211_get_qos_ctl(hdr) & - IEEE80211_QOS_CTL_TID_MASK; - - __ieee80211_stop_rx_ba_session( - sta, tid, WLAN_BACK_RECIPIENT, - WLAN_REASON_QSTA_REQUIRE_SETUP, - true); - } - mutex_unlock(&local->sta_mtx); - } else switch (sdata->vif.type) { - case NL80211_IFTYPE_STATION: - ieee80211_sta_rx_queued_mgmt(sdata, skb); - break; - case NL80211_IFTYPE_ADHOC: - ieee80211_ibss_rx_queued_mgmt(sdata, skb); - break; - case NL80211_IFTYPE_MESH_POINT: - if (!ieee80211_vif_is_mesh(&sdata->vif)) - break; - ieee80211_mesh_rx_queued_mgmt(sdata, skb); - break; - default: - WARN(1, "frame for unexpected interface type"); - break; - } + kcov_remote_start_common(skb_get_kcov_handle(skb)); + + if (skb->protocol == cpu_to_be16(ETH_P_TDLS)) + ieee80211_process_tdls_channel_switch(sdata, skb); + else + ieee80211_iface_process_skb(local, sdata, skb); + + kfree_skb(skb); + kcov_remote_stop(); + } + + /* process status queue */ + while ((skb = skb_dequeue(&sdata->status_queue))) { + kcov_remote_start_common(skb_get_kcov_handle(skb)); + ieee80211_iface_process_status(sdata, skb); kfree_skb(skb); + + kcov_remote_stop(); } /* then other type-dependent work */ @@ -1226,17 +1816,27 @@ static void ieee80211_iface_work(struct work_struct *work) break; ieee80211_mesh_work(sdata); break; + case NL80211_IFTYPE_OCB: + ieee80211_ocb_work(sdata); + break; default: break; } } -static void ieee80211_recalc_smps_work(struct work_struct *work) +static void ieee80211_activate_links_work(struct wiphy *wiphy, + struct wiphy_work *work) { struct ieee80211_sub_if_data *sdata = - container_of(work, struct ieee80211_sub_if_data, recalc_smps); + container_of(work, struct ieee80211_sub_if_data, + activate_links_work); + struct ieee80211_local *local = wiphy_priv(wiphy); - ieee80211_recalc_smps(sdata); + if (local->in_reconfig) + return; + + ieee80211_set_active_links(&sdata->vif, sdata->desired_active_links); + sdata->desired_active_links = 0; } /* @@ -1245,8 +1845,12 @@ static void ieee80211_recalc_smps_work(struct work_struct *work) static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, enum nl80211_iftype type) { - /* clear type-dependent union */ + static const u8 bssid_wildcard[ETH_ALEN] = {0xff, 0xff, 0xff, + 0xff, 0xff, 0xff}; + + /* clear type-dependent unions */ memset(&sdata->u, 0, sizeof(sdata->u)); + memset(&sdata->deflink.u, 0, sizeof(sdata->deflink.u)); /* and set some type-dependent values */ sdata->vif.type = type; @@ -1255,6 +1859,10 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); sdata->control_port_no_encrypt = false; + sdata->control_port_over_nl80211 = false; + sdata->control_port_no_preauth = false; + sdata->vif.cfg.idle = true; + sdata->vif.bss_conf.txpower = INT_MIN; /* unset */ sdata->noack_map = 0; @@ -1265,15 +1873,17 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, } skb_queue_head_init(&sdata->skb_queue); - INIT_WORK(&sdata->work, ieee80211_iface_work); - INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); + skb_queue_head_init(&sdata->status_queue); + wiphy_work_init(&sdata->work, ieee80211_iface_work); + wiphy_work_init(&sdata->activate_links_work, + ieee80211_activate_links_work); switch (type) { case NL80211_IFTYPE_P2P_GO: type = NL80211_IFTYPE_AP; sdata->vif.type = type; sdata->vif.p2p = true; - /* fall through */ + fallthrough; case NL80211_IFTYPE_AP: skb_queue_head_init(&sdata->u.ap.ps.bc_buf); INIT_LIST_HEAD(&sdata->u.ap.vlans); @@ -1283,11 +1893,15 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, type = NL80211_IFTYPE_STATION; sdata->vif.type = type; sdata->vif.p2p = true; - /* fall through */ + fallthrough; case NL80211_IFTYPE_STATION: - sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; + sdata->vif.bss_conf.bssid = sdata->deflink.u.mgd.bssid; ieee80211_sta_setup_sdata(sdata); break; + case NL80211_IFTYPE_OCB: + sdata->vif.bss_conf.bssid = bssid_wildcard; + ieee80211_ocb_setup_sdata(sdata); + break; case NL80211_IFTYPE_ADHOC: sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; ieee80211_ibss_setup_sdata(sdata); @@ -1299,24 +1913,29 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, case NL80211_IFTYPE_MONITOR: sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; sdata->dev->netdev_ops = &ieee80211_monitorif_ops; - sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | + sdata->u.mntr.flags = MONITOR_FLAG_CONTROL | MONITOR_FLAG_OTHER_BSS; break; - case NL80211_IFTYPE_WDS: - sdata->vif.bss_conf.bssid = NULL; + case NL80211_IFTYPE_NAN: + idr_init(&sdata->u.nan.function_inst_ids); + spin_lock_init(&sdata->u.nan.func_lock); + sdata->vif.bss_conf.bssid = sdata->vif.addr; break; case NL80211_IFTYPE_AP_VLAN: - break; case NL80211_IFTYPE_P2P_DEVICE: sdata->vif.bss_conf.bssid = sdata->vif.addr; break; case NL80211_IFTYPE_UNSPECIFIED: + case NL80211_IFTYPE_WDS: case NUM_NL80211_IFTYPES: - BUG(); + WARN_ON(1); break; } - ieee80211_debugfs_add_netdev(sdata); + /* need to do this after the switch so vif.type is correct */ + ieee80211_link_setup(&sdata->deflink); + + ieee80211_debugfs_recreate_netdev(sdata, false); } static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, @@ -1332,10 +1951,18 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, if (!local->ops->change_interface) return -EBUSY; + /* for now, don't support changing while links exist */ + if (ieee80211_vif_is_mld(&sdata->vif)) + return -EBUSY; + switch (sdata->vif.type) { case NL80211_IFTYPE_AP: + if (!list_empty(&sdata->u.ap.vlans)) + return -EBUSY; + break; case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_OCB: /* * Could maybe also all others here? * Just not sure how that interacts @@ -1351,11 +1978,10 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, case NL80211_IFTYPE_AP: case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_OCB: /* * Could probably support everything - * but WDS here (WDS do_open can fail - * under memory pressure, which this - * code isn't prepared to handle). + * but here. */ break; case NL80211_IFTYPE_P2P_CLIENT: @@ -1374,26 +2000,33 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, if (ret) return ret; + ieee80211_stop_vif_queues(local, sdata, + IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE); + /* do_stop will synchronize_rcu() first thing */ ieee80211_do_stop(sdata, false); ieee80211_teardown_sdata(sdata); + ieee80211_set_sdata_offload_flags(sdata); ret = drv_change_interface(local, sdata, internal_type, p2p); if (ret) - type = sdata->vif.type; + type = ieee80211_vif_type_p2p(&sdata->vif); /* * Ignore return value here, there's not much we can do since * the driver changed the interface type internally already. * The warnings will hopefully make driver authors fix it :-) */ - ieee80211_check_queues(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); + ieee80211_wake_vif_queues(local, sdata, + IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE); return ret; } @@ -1418,7 +2051,6 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, } /* reset some values that shouldn't be kept across type changes */ - sdata->drop_unencrypted = 0; if (type == NL80211_IFTYPE_STATION) sdata->u.mgd.use_4addr = false; @@ -1434,6 +2066,8 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local, u8 tmp_addr[ETH_ALEN]; int i; + lockdep_assert_wiphy(local->hw.wiphy); + /* default ... something at least */ memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); @@ -1441,13 +2075,10 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local, local->hw.wiphy->n_addresses <= 1) return; - mutex_lock(&local->iflist_mtx); - switch (type) { case NL80211_IFTYPE_MONITOR: /* doesn't matter */ break; - case NL80211_IFTYPE_WDS: case NL80211_IFTYPE_AP_VLAN: /* match up with an AP interface */ list_for_each_entry(sdata, &local->interfaces, list) { @@ -1460,25 +2091,25 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local, break; case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_P2P_GO: - if (local->hw.flags & IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF) { + if (ieee80211_hw_check(&local->hw, P2P_DEV_ADDR_FOR_INTF)) { list_for_each_entry(sdata, &local->interfaces, list) { if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) continue; if (!ieee80211_sdata_running(sdata)) continue; memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); - goto out_unlock; + return; } } - /* otherwise fall through */ + fallthrough; default: /* assign a new address if possible -- try n_addresses first */ for (i = 0; i < local->hw.wiphy->n_addresses; i++) { bool used = false; list_for_each_entry(sdata, &local->interfaces, list) { - if (memcmp(local->hw.wiphy->addresses[i].addr, - sdata->vif.addr, ETH_ALEN) == 0) { + if (ether_addr_equal(local->hw.wiphy->addresses[i].addr, + sdata->vif.addr)) { used = true; break; } @@ -1538,8 +2169,7 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local, val += inc; list_for_each_entry(sdata, &local->interfaces, list) { - if (memcmp(tmp_addr, sdata->vif.addr, - ETH_ALEN) == 0) { + if (ether_addr_equal(tmp_addr, sdata->vif.addr)) { used = true; break; } @@ -1554,32 +2184,22 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local, break; } - - out_unlock: - mutex_unlock(&local->iflist_mtx); -} - -static void ieee80211_cleanup_sdata_stas_wk(struct work_struct *wk) -{ - struct ieee80211_sub_if_data *sdata; - - sdata = container_of(wk, struct ieee80211_sub_if_data, cleanup_stations_wk); - - ieee80211_cleanup_sdata_stas(sdata); } int ieee80211_if_add(struct ieee80211_local *local, const char *name, + unsigned char name_assign_type, struct wireless_dev **new_wdev, enum nl80211_iftype type, struct vif_params *params) { struct net_device *ndev = NULL; struct ieee80211_sub_if_data *sdata = NULL; + struct txq_info *txqi; int ret, i; - int txqs = 1; ASSERT_RTNL(); + lockdep_assert_wiphy(local->hw.wiphy); - if (type == NL80211_IFTYPE_P2P_DEVICE) { + if (type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN) { struct wireless_dev *wdev; sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, @@ -1589,20 +2209,31 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, wdev = &sdata->wdev; sdata->dev = NULL; - strlcpy(sdata->name, name, IFNAMSIZ); + strscpy(sdata->name, name, IFNAMSIZ); ieee80211_assign_perm_addr(local, wdev->address, type); memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); + ether_addr_copy(sdata->vif.bss_conf.addr, sdata->vif.addr); } else { - if (local->hw.queues >= IEEE80211_NUM_ACS) - txqs = IEEE80211_NUM_ACS; - - ndev = alloc_netdev_mqs(sizeof(*sdata) + - local->hw.vif_data_size, - name, ieee80211_if_setup, txqs, 1); + int size = ALIGN(sizeof(*sdata) + local->hw.vif_data_size, + sizeof(void *)); + int txq_size = 0; + + if (type != NL80211_IFTYPE_AP_VLAN && + (type != NL80211_IFTYPE_MONITOR || + (params->flags & MONITOR_FLAG_ACTIVE))) + txq_size += sizeof(struct txq_info) + + local->hw.txq_data_size; + + ndev = alloc_netdev_mqs(size + txq_size, + name, name_assign_type, + ieee80211_if_setup, 1, 1); if (!ndev) return -ENOMEM; + dev_net_set(ndev, wiphy_net(local->hw.wiphy)); + ndev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS; + ndev->needed_headroom = local->tx_headroom + 4*6 /* four MAC addresses */ + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ @@ -1619,67 +2250,91 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, } ieee80211_assign_perm_addr(local, ndev->perm_addr, type); - memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); + if (is_valid_ether_addr(params->macaddr)) + eth_hw_addr_set(ndev, params->macaddr); + else + eth_hw_addr_set(ndev, ndev->perm_addr); SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ sdata = netdev_priv(ndev); ndev->ieee80211_ptr = &sdata->wdev; memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); + ether_addr_copy(sdata->vif.bss_conf.addr, sdata->vif.addr); memcpy(sdata->name, ndev->name, IFNAMSIZ); + if (txq_size) { + txqi = netdev_priv(ndev) + size; + ieee80211_txq_init(sdata, NULL, txqi, 0); + } + sdata->dev = ndev; } /* initialise type-independent data */ sdata->wdev.wiphy = local->hw.wiphy; - sdata->local = local; - for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) - skb_queue_head_init(&sdata->fragments[i].skb_list); + ieee80211_sdata_init(local, sdata); - INIT_LIST_HEAD(&sdata->key_list); + ieee80211_init_frag_cache(&sdata->frags); - spin_lock_init(&sdata->cleanup_stations_lock); - INIT_LIST_HEAD(&sdata->cleanup_stations); - INIT_WORK(&sdata->cleanup_stations_wk, ieee80211_cleanup_sdata_stas_wk); - INIT_DELAYED_WORK(&sdata->dfs_cac_timer_work, - ieee80211_dfs_cac_timer_work); - INIT_DELAYED_WORK(&sdata->dec_tailroom_needed_wk, - ieee80211_delayed_tailroom_dec); + wiphy_delayed_work_init(&sdata->dec_tailroom_needed_wk, + ieee80211_delayed_tailroom_dec); - for (i = 0; i < IEEE80211_NUM_BANDS; i++) { + for (i = 0; i < NUM_NL80211_BANDS; i++) { struct ieee80211_supported_band *sband; sband = local->hw.wiphy->bands[i]; sdata->rc_rateidx_mask[i] = sband ? (1 << sband->n_bitrates) - 1 : 0; - if (sband) + if (sband) { + __le16 cap; + u16 *vht_rate_mask; + memcpy(sdata->rc_rateidx_mcs_mask[i], sband->ht_cap.mcs.rx_mask, sizeof(sdata->rc_rateidx_mcs_mask[i])); - else + + cap = sband->vht_cap.vht_mcs.rx_mcs_map; + vht_rate_mask = sdata->rc_rateidx_vht_mcs_mask[i]; + ieee80211_get_vht_mask_from_cap(cap, vht_rate_mask); + } else { memset(sdata->rc_rateidx_mcs_mask[i], 0, sizeof(sdata->rc_rateidx_mcs_mask[i])); + memset(sdata->rc_rateidx_vht_mcs_mask[i], 0, + sizeof(sdata->rc_rateidx_vht_mcs_mask[i])); + } } ieee80211_set_default_queues(sdata); - sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; - sdata->user_power_level = local->user_power_level; - /* setup type-dependent data */ ieee80211_setup_sdata(sdata, type); if (ndev) { - if (params) { - ndev->ieee80211_ptr->use_4addr = params->use_4addr; - if (type == NL80211_IFTYPE_STATION) - sdata->u.mgd.use_4addr = params->use_4addr; - } + ndev->ieee80211_ptr->use_4addr = params->use_4addr; + if (type == NL80211_IFTYPE_STATION) + sdata->u.mgd.use_4addr = params->use_4addr; ndev->features |= local->hw.netdev_features; + ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE; + ndev->hw_features |= ndev->features & + MAC80211_SUPPORTED_FEATURES_TX; + sdata->vif.netdev_features = local->hw.netdev_features; + + netdev_set_default_ethtool_ops(ndev, &ieee80211_ethtool_ops); + + /* MTU range is normally 256 - 2304, where the upper limit is + * the maximum MSDU size. Monitor interfaces send and receive + * MPDU and A-MSDU frames which may be much larger so we do + * not impose an upper limit in that case. + */ + ndev->min_mtu = 256; + if (type == NL80211_IFTYPE_MONITOR) + ndev->max_mtu = 0; + else + ndev->max_mtu = local->hw.max_mtu; - ret = register_netdevice(ndev); + ret = cfg80211_register_netdevice(ndev); if (ret) { free_netdev(ndev); return ret; @@ -1699,17 +2354,21 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) { ASSERT_RTNL(); + lockdep_assert_wiphy(sdata->local->hw.wiphy); mutex_lock(&sdata->local->iflist_mtx); list_del_rcu(&sdata->list); mutex_unlock(&sdata->local->iflist_mtx); + if (sdata->vif.txq) + ieee80211_txq_purge(sdata->local, to_txq_info(sdata->vif.txq)); + synchronize_rcu(); - if (sdata->dev) { - unregister_netdevice(sdata->dev); - } else { - cfg80211_unregister_wdev(&sdata->wdev); + cfg80211_unregister_wdev(&sdata->wdev); + + if (!sdata->dev) { + ieee80211_teardown_sdata(sdata); kfree(sdata); } } @@ -1719,47 +2378,57 @@ void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) return; ieee80211_do_stop(sdata, true); - ieee80211_teardown_sdata(sdata); } -/* - * Remove all interfaces, may only be called at hardware unregistration - * time because it doesn't do RCU-safe list removals. - */ void ieee80211_remove_interfaces(struct ieee80211_local *local) { struct ieee80211_sub_if_data *sdata, *tmp; LIST_HEAD(unreg_list); - LIST_HEAD(wdev_list); ASSERT_RTNL(); - /* - * Close all AP_VLAN interfaces first, as otherwise they - * might be closed while the AP interface they belong to - * is closed, causing unregister_netdevice_many() to crash. + /* Before destroying the interfaces, make sure they're all stopped so + * that the hardware is stopped. Otherwise, the driver might still be + * iterating the interfaces during the shutdown, e.g. from a worker + * or from RX processing or similar, and if it does so (using atomic + * iteration) while we're manipulating the list, the iteration will + * crash. + * + * After this, the hardware should be stopped and the driver should + * have stopped all of its activities, so that we can do RCU-unaware + * manipulations of the interface list below. */ - list_for_each_entry(sdata, &local->interfaces, list) - if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) - dev_close(sdata->dev); + cfg80211_shutdown_all_interfaces(local->hw.wiphy); - mutex_lock(&local->iflist_mtx); - list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { - list_del(&sdata->list); + guard(wiphy)(local->hw.wiphy); - if (sdata->dev) - unregister_netdevice_queue(sdata->dev, &unreg_list); - else - list_add(&sdata->list, &wdev_list); - } + WARN(local->open_count, "%s: open count remains %d\n", + wiphy_name(local->hw.wiphy), local->open_count); + + mutex_lock(&local->iflist_mtx); + list_splice_init(&local->interfaces, &unreg_list); mutex_unlock(&local->iflist_mtx); - unregister_netdevice_many(&unreg_list); - list_del(&unreg_list); - list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { + list_for_each_entry_safe(sdata, tmp, &unreg_list, list) { + bool netdev = sdata->dev; + + /* + * Remove IP addresses explicitly, since the notifier will + * skip the callbacks if wdev->registered is false, since + * we can't acquire the wiphy_lock() again there if already + * inside this locked section. + */ + sdata->vif.cfg.arp_addr_cnt = 0; + if (sdata->vif.type == NL80211_IFTYPE_STATION && + sdata->u.mgd.associated) + ieee80211_vif_cfg_change_notify(sdata, + BSS_CHANGED_ARP_FILTER); + list_del(&sdata->list); cfg80211_unregister_wdev(&sdata->wdev); - kfree(sdata); + + if (!netdev) + kfree(sdata); } } @@ -1770,20 +2439,19 @@ static int netdev_notify(struct notifier_block *nb, struct ieee80211_sub_if_data *sdata; if (state != NETDEV_CHANGENAME) - return 0; + return NOTIFY_DONE; if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) - return 0; + return NOTIFY_DONE; if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) - return 0; + return NOTIFY_DONE; sdata = IEEE80211_DEV_TO_SUB_IF(dev); - memcpy(sdata->name, dev->name, IFNAMSIZ); - ieee80211_debugfs_rename_netdev(sdata); - return 0; + + return NOTIFY_OK; } static struct notifier_block mac80211_netdev_notifier = { @@ -1799,3 +2467,38 @@ void ieee80211_iface_exit(void) { unregister_netdevice_notifier(&mac80211_netdev_notifier); } + +void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata) +{ + if (sdata->vif.type == NL80211_IFTYPE_AP) + atomic_inc(&sdata->u.ap.num_mcast_sta); + else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + atomic_inc(&sdata->u.vlan.num_mcast_sta); +} + +void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata) +{ + if (sdata->vif.type == NL80211_IFTYPE_AP) + atomic_dec(&sdata->u.ap.num_mcast_sta); + else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + atomic_dec(&sdata->u.vlan.num_mcast_sta); +} + +void ieee80211_vif_block_queues_csa(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_local *local = sdata->local; + + if (ieee80211_hw_check(&local->hw, HANDLES_QUIET_CSA)) + return; + + ieee80211_stop_vif_queues_norefcount(local, sdata, + IEEE80211_QUEUE_STOP_REASON_CSA); +} + +void ieee80211_vif_unblock_queues_csa(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_local *local = sdata->local; + + ieee80211_wake_vif_queues_norefcount(local, sdata, + IEEE80211_QUEUE_STOP_REASON_CSA); +} |