diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/ieee80211_sta.c | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c index f1edaa0c0da3..d1f7199a2083 100644 --- a/net/mac80211/ieee80211_sta.c +++ b/net/mac80211/ieee80211_sta.c @@ -63,6 +63,8 @@ #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0 +#define IEEE80211_DELBA_PARAM_TID_MASK 0xF000 +#define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800 /* next values represent the buffer size for A-MPDU frame. * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */ @@ -1264,6 +1266,36 @@ void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *ra, u16 tid, sta_info_put(sta); } +static void ieee80211_sta_process_delba(struct net_device *dev, + struct ieee80211_mgmt *mgmt, size_t len) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct sta_info *sta; + u16 tid, params; + u16 initiator; + DECLARE_MAC_BUF(mac); + + sta = sta_info_get(local, mgmt->sa); + if (!sta) + return; + + params = le16_to_cpu(mgmt->u.action.u.delba.params); + tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; + initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11; + +#ifdef CONFIG_MAC80211_HT_DEBUG + if (net_ratelimit()) + printk(KERN_DEBUG "delba from %s on tid %d reason code %d\n", + print_mac(mac, mgmt->sa), tid, + mgmt->u.action.u.delba.reason_code); +#endif /* CONFIG_MAC80211_HT_DEBUG */ + + if (initiator == WLAN_BACK_INITIATOR) + ieee80211_sta_stop_rx_ba_session(dev, sta->addr, tid, + WLAN_BACK_INITIATOR, 0); + sta_info_put(sta); +} + /* * After receiving Block Ack Request (BAR) we activated a * timer after each frame arrives from the originator. @@ -2204,9 +2236,15 @@ static void ieee80211_rx_mgmt_action(struct net_device *dev, break; ieee80211_sta_process_addba_request(dev, mgmt, len); break; + case WLAN_ACTION_DELBA: + if (len < (IEEE80211_MIN_ACTION_SIZE + + sizeof(mgmt->u.action.u.delba))) + break; + ieee80211_sta_process_delba(dev, mgmt, len); + break; default: if (net_ratelimit()) - printk(KERN_DEBUG "%s: received unsupported BACK\n", + printk(KERN_DEBUG "%s: Rx unknown A-MPDU action\n", dev->name); break; } |