diff options
Diffstat (limited to 'net/mac80211/tx.c')
-rw-r--r-- | net/mac80211/tx.c | 243 |
1 files changed, 106 insertions, 137 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index de8548bf0a7f..9972e07a2f96 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -48,15 +48,15 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx, struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); /* assume HW handles this */ - if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS) + if (tx->rate.flags & IEEE80211_TX_RC_MCS) return 0; /* uh huh? */ - if (WARN_ON_ONCE(info->control.rates[0].idx < 0)) + if (WARN_ON_ONCE(tx->rate.idx < 0)) return 0; sband = local->hw.wiphy->bands[info->band]; - txrate = &sband->bitrates[info->control.rates[0].idx]; + txrate = &sband->bitrates[tx->rate.idx]; erp = txrate->flags & IEEE80211_RATE_ERP_G; @@ -233,6 +233,7 @@ ieee80211_tx_h_dynamic_ps(struct ieee80211_tx_data *tx) if (local->hw.conf.flags & IEEE80211_CONF_PS) { ieee80211_stop_queues_by_reason(&local->hw, + IEEE80211_MAX_QUEUE_MAP, IEEE80211_QUEUE_STOP_REASON_PS); ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; ieee80211_queue_work(&local->hw, @@ -616,11 +617,9 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb); struct ieee80211_hdr *hdr = (void *)tx->skb->data; struct ieee80211_supported_band *sband; - struct ieee80211_rate *rate; - int i; u32 len; - bool inval = false, rts = false, short_preamble = false; struct ieee80211_tx_rate_control txrc; + struct ieee80211_sta_rates *ratetbl = NULL; bool assoc = false; memset(&txrc, 0, sizeof(txrc)); @@ -641,18 +640,23 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) txrc.max_rate_idx = -1; else txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1; - memcpy(txrc.rate_idx_mcs_mask, - tx->sdata->rc_rateidx_mcs_mask[info->band], - sizeof(txrc.rate_idx_mcs_mask)); + + if (tx->sdata->rc_has_mcs_mask[info->band]) + txrc.rate_idx_mcs_mask = + tx->sdata->rc_rateidx_mcs_mask[info->band]; + txrc.bss = (tx->sdata->vif.type == NL80211_IFTYPE_AP || tx->sdata->vif.type == NL80211_IFTYPE_MESH_POINT || tx->sdata->vif.type == NL80211_IFTYPE_ADHOC); /* set up RTS protection if desired */ if (len > tx->local->hw.wiphy->rts_threshold) { - txrc.rts = rts = true; + txrc.rts = true; } + info->control.use_rts = txrc.rts; + info->control.use_cts_prot = tx->sdata->vif.bss_conf.use_cts_prot; + /* * Use short preamble if the BSS can handle it, but not for * management frames unless we know the receiver can handle @@ -662,7 +666,9 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) if (tx->sdata->vif.bss_conf.use_short_preamble && (ieee80211_is_data(hdr->frame_control) || (tx->sta && test_sta_flag(tx->sta, WLAN_STA_SHORT_PREAMBLE)))) - txrc.short_preamble = short_preamble = true; + txrc.short_preamble = true; + + info->control.short_preamble = txrc.short_preamble; if (tx->sta) assoc = test_sta_flag(tx->sta, WLAN_STA_ASSOC); @@ -686,16 +692,38 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) */ rate_control_get_rate(tx->sdata, tx->sta, &txrc); - if (unlikely(info->control.rates[0].idx < 0)) - return TX_DROP; + if (tx->sta && !info->control.skip_table) + ratetbl = rcu_dereference(tx->sta->sta.rates); + + if (unlikely(info->control.rates[0].idx < 0)) { + if (ratetbl) { + struct ieee80211_tx_rate rate = { + .idx = ratetbl->rate[0].idx, + .flags = ratetbl->rate[0].flags, + .count = ratetbl->rate[0].count + }; + + if (ratetbl->rate[0].idx < 0) + return TX_DROP; + + tx->rate = rate; + } else { + return TX_DROP; + } + } else { + tx->rate = info->control.rates[0]; + } if (txrc.reported_rate.idx < 0) { - txrc.reported_rate = info->control.rates[0]; + txrc.reported_rate = tx->rate; if (tx->sta && ieee80211_is_data(hdr->frame_control)) tx->sta->last_tx_rate = txrc.reported_rate; } else if (tx->sta) tx->sta->last_tx_rate = txrc.reported_rate; + if (ratetbl) + return TX_CONTINUE; + if (unlikely(!info->control.rates[0].count)) info->control.rates[0].count = 1; @@ -703,91 +731,6 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) (info->flags & IEEE80211_TX_CTL_NO_ACK))) info->control.rates[0].count = 1; - if (is_multicast_ether_addr(hdr->addr1)) { - /* - * XXX: verify the rate is in the basic rateset - */ - return TX_CONTINUE; - } - - /* - * set up the RTS/CTS rate as the fastest basic rate - * that is not faster than the data rate - * - * XXX: Should this check all retry rates? - */ - if (!(info->control.rates[0].flags & IEEE80211_TX_RC_MCS)) { - s8 baserate = 0; - - rate = &sband->bitrates[info->control.rates[0].idx]; - - for (i = 0; i < sband->n_bitrates; i++) { - /* must be a basic rate */ - if (!(tx->sdata->vif.bss_conf.basic_rates & BIT(i))) - continue; - /* must not be faster than the data rate */ - if (sband->bitrates[i].bitrate > rate->bitrate) - continue; - /* maximum */ - if (sband->bitrates[baserate].bitrate < - sband->bitrates[i].bitrate) - baserate = i; - } - - info->control.rts_cts_rate_idx = baserate; - } - - for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { - /* - * make sure there's no valid rate following - * an invalid one, just in case drivers don't - * take the API seriously to stop at -1. - */ - if (inval) { - info->control.rates[i].idx = -1; - continue; - } - if (info->control.rates[i].idx < 0) { - inval = true; - continue; - } - - /* - * For now assume MCS is already set up correctly, this - * needs to be fixed. - */ - if (info->control.rates[i].flags & IEEE80211_TX_RC_MCS) { - WARN_ON(info->control.rates[i].idx > 76); - continue; - } - - /* set up RTS protection if desired */ - if (rts) - info->control.rates[i].flags |= - IEEE80211_TX_RC_USE_RTS_CTS; - - /* RC is busted */ - if (WARN_ON_ONCE(info->control.rates[i].idx >= - sband->n_bitrates)) { - info->control.rates[i].idx = -1; - continue; - } - - rate = &sband->bitrates[info->control.rates[i].idx]; - - /* set up short preamble */ - if (short_preamble && - rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) - info->control.rates[i].flags |= - IEEE80211_TX_RC_USE_SHORT_PREAMBLE; - - /* set up G protection */ - if (!rts && tx->sdata->vif.bss_conf.use_cts_prot && - rate->flags & IEEE80211_RATE_ERP_G) - info->control.rates[i].flags |= - IEEE80211_TX_RC_USE_CTS_PROTECT; - } - return TX_CONTINUE; } @@ -991,15 +934,18 @@ static ieee80211_tx_result debug_noinline ieee80211_tx_h_stats(struct ieee80211_tx_data *tx) { struct sk_buff *skb; + int ac = -1; if (!tx->sta) return TX_CONTINUE; - tx->sta->tx_packets++; skb_queue_walk(&tx->skbs, skb) { + ac = skb_get_queue_mapping(skb); tx->sta->tx_fragments++; - tx->sta->tx_bytes += skb->len; + tx->sta->tx_bytes[ac] += skb->len; } + if (ac >= 0) + tx->sta->tx_packets[ac]++; return TX_CONTINUE; } @@ -1231,34 +1177,40 @@ static bool ieee80211_tx_frags(struct ieee80211_local *local, if (local->queue_stop_reasons[q] || (!txpending && !skb_queue_empty(&local->pending[q]))) { if (unlikely(info->flags & - IEEE80211_TX_INTFL_OFFCHAN_TX_OK && - local->queue_stop_reasons[q] & - ~BIT(IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL))) { + IEEE80211_TX_INTFL_OFFCHAN_TX_OK)) { + if (local->queue_stop_reasons[q] & + ~BIT(IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL)) { + /* + * Drop off-channel frames if queues + * are stopped for any reason other + * than off-channel operation. Never + * queue them. + */ + spin_unlock_irqrestore( + &local->queue_stop_reason_lock, + flags); + ieee80211_purge_tx_queue(&local->hw, + skbs); + return true; + } + } else { + /* - * Drop off-channel frames if queues are stopped - * for any reason other than off-channel - * operation. Never queue them. + * Since queue is stopped, queue up frames for + * later transmission from the tx-pending + * tasklet when the queue is woken again. */ - spin_unlock_irqrestore( - &local->queue_stop_reason_lock, flags); - ieee80211_purge_tx_queue(&local->hw, skbs); - return true; + if (txpending) + skb_queue_splice_init(skbs, + &local->pending[q]); + else + skb_queue_splice_tail_init(skbs, + &local->pending[q]); + + spin_unlock_irqrestore(&local->queue_stop_reason_lock, + flags); + return false; } - - /* - * Since queue is stopped, queue up frames for later - * transmission from the tx-pending tasklet when the - * queue is woken again. - */ - if (txpending) - skb_queue_splice_init(skbs, &local->pending[q]); - else - skb_queue_splice_tail_init(skbs, - &local->pending[q]); - - spin_unlock_irqrestore(&local->queue_stop_reason_lock, - flags); - return false; } spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); @@ -1699,7 +1651,7 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, if (chanctx_conf) chan = chanctx_conf->def.chan; else if (!local->use_chanctx) - chan = local->_oper_channel; + chan = local->_oper_chandef.chan; else goto fail_rcu; @@ -1833,7 +1785,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, * This is the exception! WDS style interfaces are prohibited * when channel contexts are in used so this must be valid */ - band = local->hw.conf.channel->band; + band = local->hw.conf.chandef.chan->band; break; #ifdef CONFIG_MAC80211_MESH case NL80211_IFTYPE_MESH_POINT: @@ -1844,9 +1796,24 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, } if (!is_multicast_ether_addr(skb->data)) { + struct sta_info *next_hop; + bool mpp_lookup = true; + mpath = mesh_path_lookup(sdata, skb->data); - if (!mpath) + if (mpath) { + mpp_lookup = false; + next_hop = rcu_dereference(mpath->next_hop); + if (!next_hop || + !(mpath->flags & (MESH_PATH_ACTIVE | + MESH_PATH_RESOLVING))) + mpp_lookup = true; + } + + if (mpp_lookup) mppath = mpp_path_lookup(sdata, skb->data); + + if (mppath && mpath) + mesh_path_del(mpath->sdata, mpath->dst); } /* @@ -2064,7 +2031,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, encaps_data = bridge_tunnel_header; encaps_len = sizeof(bridge_tunnel_header); skip_header_bytes -= 2; - } else if (ethertype >= 0x600) { + } else if (ethertype >= ETH_P_802_3_MIN) { encaps_data = rfc1042_header; encaps_len = sizeof(rfc1042_header); skip_header_bytes -= 2; @@ -2350,9 +2317,9 @@ static int ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata, if (local->tim_in_locked_section) { __ieee80211_beacon_add_tim(sdata, ps, skb); } else { - spin_lock(&local->tim_lock); + spin_lock_bh(&local->tim_lock); __ieee80211_beacon_add_tim(sdata, ps, skb); - spin_unlock(&local->tim_lock); + spin_unlock_bh(&local->tim_lock); } return 0; @@ -2417,14 +2384,17 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; struct ieee80211_hdr *hdr; - struct sk_buff *presp = rcu_dereference(ifibss->presp); + struct beacon_data *presp = rcu_dereference(ifibss->presp); if (!presp) goto out; - skb = skb_copy(presp, GFP_ATOMIC); + skb = dev_alloc_skb(local->tx_headroom + presp->head_len); if (!skb) goto out; + skb_reserve(skb, local->tx_headroom); + memcpy(skb_put(skb, presp->head_len), presp->head, + presp->head_len); hdr = (struct ieee80211_hdr *) skb->data; hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | @@ -2474,8 +2444,6 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, txrc.max_rate_idx = -1; else txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1; - memcpy(txrc.rate_idx_mcs_mask, sdata->rc_rateidx_mcs_mask[band], - sizeof(txrc.rate_idx_mcs_mask)); txrc.bss = true; rate_control_get_rate(sdata, NULL, &txrc); @@ -2724,7 +2692,8 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw, cpu_to_le16(IEEE80211_FCTL_MOREDATA); } - sdata = IEEE80211_DEV_TO_SUB_IF(skb->dev); + if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + sdata = IEEE80211_DEV_TO_SUB_IF(skb->dev); if (!ieee80211_tx_prepare(sdata, &tx, skb)) break; dev_kfree_skb_any(skb); |