diff options
Diffstat (limited to 'net/mac80211/tx.c')
-rw-r--r-- | net/mac80211/tx.c | 206 |
1 files changed, 199 insertions, 7 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 87def9cb91ff..49d35936cc9d 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -5,7 +5,7 @@ * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> * Copyright 2013-2014 Intel Mobile Communications GmbH - * Copyright (C) 2018 Intel Corporation + * Copyright (C) 2018-2020 Intel Corporation * * Transmit and frame generation functions. */ @@ -297,7 +297,7 @@ ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx) if (unlikely(test_bit(SCAN_SW_SCANNING, &tx->local->scanning)) && test_bit(SDATA_STATE_OFFCHANNEL, &tx->sdata->state) && !ieee80211_is_probe_req(hdr->frame_control) && - !ieee80211_is_nullfunc(hdr->frame_control)) + !ieee80211_is_any_nullfunc(hdr->frame_control)) /* * When software scanning only nullfunc frames (to notify * the sleep state to the AP) and probe requests (for the @@ -1250,7 +1250,8 @@ static struct txq_info *ieee80211_get_txq(struct ieee80211_local *local, (info->control.flags & IEEE80211_TX_CTRL_PS_RESPONSE)) return NULL; - if (unlikely(!ieee80211_is_data_present(hdr->frame_control))) { + if (!(info->control.flags & IEEE80211_TX_CTRL_HW_80211_ENCAP) && + unlikely(!ieee80211_is_data_present(hdr->frame_control))) { if ((!ieee80211_is_mgmt(hdr->frame_control) || ieee80211_is_bufferable_mmpdu(hdr->frame_control) || vif->type == NL80211_IFTYPE_STATION) && @@ -2360,9 +2361,9 @@ static inline bool ieee80211_is_tdls_setup(struct sk_buff *skb) skb->data[14] == WLAN_TDLS_SNAP_RFTYPE; } -static int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, - struct sk_buff *skb, - struct sta_info **sta_out) +int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb, + struct sta_info **sta_out) { struct sta_info *sta; @@ -3616,6 +3617,9 @@ begin: else info->flags &= ~IEEE80211_TX_CTL_AMPDU; + if (info->control.flags & IEEE80211_TX_CTRL_HW_80211_ENCAP) + goto encap_out; + if (info->control.flags & IEEE80211_TX_CTRL_FAST_XMIT) { struct sta_info *sta = container_of(txq->sta, struct sta_info, sta); @@ -3675,9 +3679,11 @@ begin: break; } +encap_out: IEEE80211_SKB_CB(skb)->control.vif = vif; - if (wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) { + if (vif && + wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) { u32 airtime; airtime = ieee80211_calc_expected_tx_airtime(hw, vif, txq->sta, @@ -4103,6 +4109,153 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, return NETDEV_TX_OK; } +static bool ieee80211_tx_8023(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb, int led_len, + struct sta_info *sta, + bool txpending) +{ + struct ieee80211_local *local = sdata->local; + struct ieee80211_tx_control control = {}; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_sta *pubsta = NULL; + unsigned long flags; + int q = info->hw_queue; + + if (ieee80211_queue_skb(local, sdata, sta, skb)) + return true; + + spin_lock_irqsave(&local->queue_stop_reason_lock, flags); + + if (local->queue_stop_reasons[q] || + (!txpending && !skb_queue_empty(&local->pending[q]))) { + if (txpending) + skb_queue_head(&local->pending[q], skb); + else + skb_queue_tail(&local->pending[q], skb); + + spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); + + return false; + } + + spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); + + if (sta && sta->uploaded) + pubsta = &sta->sta; + + control.sta = pubsta; + + drv_tx(local, &control, skb); + + return true; +} + +static void ieee80211_8023_xmit(struct ieee80211_sub_if_data *sdata, + struct net_device *dev, struct sta_info *sta, + struct sk_buff *skb) +{ + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ethhdr *ehdr = (struct ethhdr *)skb->data; + struct ieee80211_local *local = sdata->local; + bool authorized = false; + bool multicast; + unsigned char *ra = ehdr->h_dest; + + if (IS_ERR(sta) || (sta && !sta->uploaded)) + sta = NULL; + + if (sdata->vif.type == NL80211_IFTYPE_STATION && + (!sta || !test_sta_flag(sta, WLAN_STA_TDLS_PEER))) + ra = sdata->u.mgd.bssid; + + if (!is_valid_ether_addr(ra)) + goto out_free; + + multicast = is_multicast_ether_addr(ra); + + if (sta) + authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); + + if (!multicast && !authorized && + (ehdr->h_proto != sdata->control_port_protocol || + !ether_addr_equal(sdata->vif.addr, ehdr->h_source))) + goto out_free; + + if (multicast && sdata->vif.type == NL80211_IFTYPE_AP && + !atomic_read(&sdata->u.ap.num_mcast_sta)) + goto out_free; + + if (unlikely(test_bit(SCAN_SW_SCANNING, &local->scanning)) && + test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) + goto out_free; + + if (unlikely(!multicast && skb->sk && + skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS)) + ieee80211_store_ack_skb(local, skb, &info->flags); + + memset(info, 0, sizeof(*info)); + + if (unlikely(sdata->control_port_protocol == ehdr->h_proto)) { + if (sdata->control_port_no_encrypt) + info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; + info->control.flags |= IEEE80211_TX_CTRL_PORT_CTRL_PROTO; + } + + if (multicast) + info->flags |= IEEE80211_TX_CTL_NO_ACK; + + info->hw_queue = sdata->vif.hw_queue[skb_get_queue_mapping(skb)]; + + ieee80211_tx_stats(dev, skb->len); + + if (sta) { + sta->tx_stats.bytes[skb_get_queue_mapping(skb)] += skb->len; + sta->tx_stats.packets[skb_get_queue_mapping(skb)]++; + } + + if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + sdata = container_of(sdata->bss, + struct ieee80211_sub_if_data, u.ap); + + info->control.flags |= IEEE80211_TX_CTRL_HW_80211_ENCAP; + info->control.vif = &sdata->vif; + + ieee80211_tx_8023(sdata, skb, skb->len, sta, false); + + return; + +out_free: + kfree_skb(skb); +} + +netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, + struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct sta_info *sta; + + if (WARN_ON(!sdata->hw_80211_encap)) { + kfree_skb(skb); + return NETDEV_TX_OK; + } + + if (unlikely(skb->len < ETH_HLEN)) { + kfree_skb(skb); + return NETDEV_TX_OK; + } + + rcu_read_lock(); + + if (ieee80211_lookup_ra_sta(sdata, skb, &sta)) + kfree_skb(skb); + else + ieee80211_8023_xmit(sdata, dev, sta, skb); + + rcu_read_unlock(); + + return NETDEV_TX_OK; +} + struct sk_buff * ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, u32 info_flags) @@ -4181,6 +4334,16 @@ static bool ieee80211_tx_pending_skb(struct ieee80211_local *local, } info->band = chanctx_conf->def.chan->band; result = ieee80211_tx(sdata, NULL, skb, true, 0); + } else if (info->control.flags & IEEE80211_TX_CTRL_HW_80211_ENCAP) { + if (ieee80211_lookup_ra_sta(sdata, skb, &sta)) { + dev_kfree_skb(skb); + return true; + } + + if (IS_ERR(sta) || (sta && !sta->uploaded)) + sta = NULL; + + result = ieee80211_tx_8023(sdata, skb, skb->len, sta, true); } else { struct sk_buff_head skbs; @@ -4501,6 +4664,32 @@ bool ieee80211_csa_is_complete(struct ieee80211_vif *vif) } EXPORT_SYMBOL(ieee80211_csa_is_complete); +static int ieee80211_beacon_protect(struct sk_buff *skb, + struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata) +{ + ieee80211_tx_result res; + struct ieee80211_tx_data tx; + struct sk_buff *check_skb; + + memset(&tx, 0, sizeof(tx)); + tx.key = rcu_dereference(sdata->default_beacon_key); + if (!tx.key) + return 0; + tx.local = local; + tx.sdata = sdata; + __skb_queue_head_init(&tx.skbs); + __skb_queue_tail(&tx.skbs, skb); + res = ieee80211_tx_h_encrypt(&tx); + check_skb = __skb_dequeue(&tx.skbs); + /* we may crash after this, but it'd be a bug in crypto */ + WARN_ON(check_skb != skb); + if (WARN_ON_ONCE(res != TX_CONTINUE)) + return -EINVAL; + + return 0; +} + static struct sk_buff * __ieee80211_beacon_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, @@ -4568,6 +4757,9 @@ __ieee80211_beacon_get(struct ieee80211_hw *hw, if (beacon->tail) skb_put_data(skb, beacon->tail, beacon->tail_len); + + if (ieee80211_beacon_protect(skb, local, sdata) < 0) + goto out; } else goto out; } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |