kernel/git/stable/linux.git/net/mac80211/tx.c, branch linux-4.7.y

mac80211: check skb_linearize() return value

2016-10-07T13:21:19+00:00

commit 0b97a484e52cb423662eb98904aad82dafcc1f10 upstream. The A-MSDU TX code (within TXQs) didn't always check the return value of skb_linearize() properly, resulting in potentially passing a frag- list SKB down to the driver even when it said it can't handle it. Fix that. Fixes: 6e0456b545456 ("mac80211: add A-MSDU tx support") Signed-off-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman

mac80211: fix purging multicast PS buffer queue

2016-09-07T06:34:49+00:00

commit 6b07d9ca9b5363dda959b9582a3fc9c0b89ef3b5 upstream. The code currently assumes that buffered multicast PS frames don't have a pending ACK frame for tx status reporting. However, hostapd sends a broadcast deauth frame on teardown for which tx status is requested. This can lead to the "Have pending ack frames" warning on module reload. Fix this by using ieee80211_free_txskb/ieee80211_purge_tx_queue. Signed-off-by: Felix Fietkau Signed-off-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman

cfg80211: remove enum ieee80211_band

2016-04-12T13:56:15+00:00

This enum is already perfectly aliased to enum nl80211_band, and the only reason for it is that we get IEEE80211_NUM_BANDS out of it. There's no really good reason to not declare the number of bands in nl80211 though, so do that and remove the cfg80211 one. Signed-off-by: Johannes Berg

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-04-09T21:41:41+00:00

mac80211: add A-MSDU tx support

2016-04-06T11:18:19+00:00

Requires software tx queueing and fast-xmit support. For good performance, drivers need frag_list support as well. This avoids the need for copying data of aggregated frames. Running without it is only supported for debugging purposes. To avoid performance and packet size issues, the rate control module or driver needs to limit the maximum A-MSDU size by setting max_rc_amsdu_len in struct ieee80211_sta. Signed-off-by: Felix Fietkau [fix locking issue] Signed-off-by: Johannes Berg

mac80211: close the SP when we enqueue frames during the SP

2016-04-05T09:33:49+00:00

Since we enqueued the frame that was supposed to be sent during the SP, and that frame may very well cary the IEEE80211_TX_STATUS_EOSP bit, we may never close the SP (WLAN_STA_SP will never be cleared). If that happens, we will not open any new SP and will never respond to any poll frame from the client. Clear WLAN_STA_SP manually if a frame that was polled during the SP is queued because of a starting A-MPDU session. The client may not see the EOSP bit, but it will at least be able to poll new frames in another SP. Reported-by: Alesya Shapira Signed-off-by: Emmanuel Grumbach [remove erroneous comment] Signed-off-by: Johannes Berg

mac80211: don't send deferred frames outside the SP

2016-04-05T09:16:50+00:00

Frames that are sent between ampdu_action(IEEE80211_AMPDU_TX_START) and the move to the HT_AGG_STATE_OPERATIONAL state are buffered. If we try to start an A-MPDU session while the peer is sleeping and polling frames with U-APSD, we may have frames that will be buffered by ieee80211_tx_prep_agg. These frames have IEEE80211_TX_CTL_NO_PS_BUFFER set since they are sent to a sleeping client and possibly IEEE80211_TX_STATUS_EOSP. If the frame is buffered, we need clear these two flags since they will be re-sent after the move to HT_AGG_STATE_OPERATIONAL state which is very likely to happen after the SP ends. Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg

mac80211: do not pass injected frames without a valid rate to the driver

2016-04-05T08:58:21+00:00

Fall back to rate control if the requested bitrate was not found. Fixes: dfdfc2beb0dd ("mac80211: Parse legacy and HT rate in injected frames") Signed-off-by: Felix Fietkau Signed-off-by: Johannes Berg

mac80211: fix parsing of 40Mhz in injected radiotap header

2016-04-05T08:58:16+00:00

The MCS bandwidth part of the radiotap header is 2 bits wide. The full 2 bit have to compared against IEEE80211_RADIOTAP_MCS_BW_40 and not only if the first bit is set. Otherwise IEEE80211_RADIOTAP_MCS_BW_40 can be confused with IEEE80211_RADIOTAP_MCS_BW_20U. Fixes: dfdfc2beb0dd ("mac80211: Parse legacy and HT rate in injected frames") Signed-off-by: Sven Eckelmann Signed-off-by: Johannes Berg

mac80211: mesh: move path tables into if_mesh

2016-04-05T08:56:30+00:00

The mesh path and mesh gate hashtables are global, containing all of the mpaths for every mesh interface, but the paths are all tied logically to a single interface. The common case is just a single mesh interface, so optimize for that by moving the global hashtable into the per-interface struct. Doing so allows us to drop sdata pointer comparisons inside the lookups and also saves a few bytes of BSS and data. Signed-off-by: Bob Copeland Signed-off-by: Johannes Berg