diff options
| -rw-r--r-- | include/linux/ieee80211.h | 4 | ||||
| -rw-r--r-- | include/net/mac80211.h | 3 | ||||
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 1 | ||||
| -rw-r--r-- | net/mac80211/main.c | 21 | ||||
| -rw-r--r-- | net/mac80211/mlme.c | 29 |
5 files changed, 56 insertions, 2 deletions
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index cffd6d0094f9..aa603c3d76d1 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -658,6 +658,10 @@ struct ieee80211_bar { __le16 start_seq_num; } __attribute__((packed)); +/* 802.11 BAR control masks */ +#define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000 +#define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004 + /** * struct ieee80211_ht_cap - HT capabilities * diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 3a204acad901..0a5de3ef527a 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -235,6 +235,8 @@ struct ieee80211_bss_conf { * @IEEE80211_TX_STAT_ACK: Frame was acknowledged * @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status * is for the whole aggregation. + * @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned, + * so consider using block ack request (BAR). */ enum mac80211_tx_control_flags { IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0), @@ -260,6 +262,7 @@ enum mac80211_tx_control_flags { IEEE80211_TX_STAT_TX_FILTERED = BIT(20), IEEE80211_TX_STAT_ACK = BIT(21), IEEE80211_TX_STAT_AMPDU = BIT(22), + IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(23), }; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index f90da1bbec49..175cbdd36d7f 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -904,6 +904,7 @@ void ieee80211_send_addba_request(struct net_device *dev, const u8 *da, u16 agg_size, u16 timeout); void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid, u16 initiator, u16 reason_code); +void ieee80211_send_bar(struct net_device *dev, u8 *ra, u16 tid, u16 ssn); void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *da, u16 tid, u16 initiator, u16 reason); diff --git a/net/mac80211/main.c b/net/mac80211/main.c index f18cfd727872..074f71a62a6d 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -1404,14 +1404,15 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) struct ieee80211_local *local = hw_to_local(hw); struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); u16 frag, type; + __le16 fc; struct ieee80211_tx_status_rtap_hdr *rthdr; struct ieee80211_sub_if_data *sdata; struct net_device *prev_dev = NULL; + struct sta_info *sta; rcu_read_lock(); if (info->status.excessive_retries) { - struct sta_info *sta; sta = sta_info_get(local, hdr->addr1); if (sta) { if (test_sta_flags(sta, WLAN_STA_PS)) { @@ -1426,8 +1427,24 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) } } + fc = hdr->frame_control; + + if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && + (ieee80211_is_data_qos(fc))) { + u16 tid, ssn; + u8 *qc; + sta = sta_info_get(local, hdr->addr1); + if (sta) { + qc = ieee80211_get_qos_ctl(hdr); + tid = qc[0] & 0xf; + ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) + & IEEE80211_SCTL_SEQ); + ieee80211_send_bar(sta->sdata->dev, hdr->addr1, + tid, ssn); + } + } + if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { - struct sta_info *sta; sta = sta_info_get(local, hdr->addr1); if (sta) { ieee80211_handle_filtered_frame(local, sta, skb); diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 86abdf96390c..e080482b63cd 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1536,6 +1536,35 @@ void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid, ieee80211_sta_tx(dev, skb, 0); } +void ieee80211_send_bar(struct net_device *dev, u8 *ra, u16 tid, u16 ssn) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct sk_buff *skb; + struct ieee80211_bar *bar; + u16 bar_control = 0; + + skb = dev_alloc_skb(sizeof(*bar) + local->hw.extra_tx_headroom); + if (!skb) { + printk(KERN_ERR "%s: failed to allocate buffer for " + "bar frame\n", dev->name); + return; + } + skb_reserve(skb, local->hw.extra_tx_headroom); + bar = (struct ieee80211_bar *)skb_put(skb, sizeof(*bar)); + memset(bar, 0, sizeof(*bar)); + bar->frame_control = IEEE80211_FC(IEEE80211_FTYPE_CTL, + IEEE80211_STYPE_BACK_REQ); + memcpy(bar->ra, ra, ETH_ALEN); + memcpy(bar->ta, dev->dev_addr, ETH_ALEN); + bar_control |= (u16)IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL; + bar_control |= (u16)IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA; + bar_control |= (u16)(tid << 12); + bar->control = cpu_to_le16(bar_control); + bar->start_seq_num = cpu_to_le16(ssn); + + ieee80211_sta_tx(dev, skb, 0); +} + void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *ra, u16 tid, u16 initiator, u16 reason) { |