kernel.git/net/mac80211/rx.c, branch linux-2.6.37.y

mac80211: fix mesh forwarding when ratelimited too

2011-02-17T23:13:50Z

commit 919bbad580445801c22ef6ccbe624551fee652bd upstream. Commit b51aff057c9d0ef6c529dc25fd9f775faf7b6c63 said: Under memory pressure, the mac80211 mesh code may helpfully print a message that it failed to clone a mesh frame and then will proceed to crash trying to use it anyway. Fix that. Avoid the reference whenever the frame copy is unsuccessful regardless of the debug message being suppressed or printed. Signed-off-by: Milton Miller Signed-off-by: John W. Linville Signed-off-by: Greg Kroah-Hartman

mac80211: fix mesh forwarding

2010-12-22T18:36:35Z

Under memory pressure, the mac80211 mesh code may helpfully print a message that it failed to clone a mesh frame and then will proceed to crash trying to use it anyway. Fix that. Cc: stable@kernel.org [2.6.27+] Signed-off-by: Johannes Berg Acked-by: Javier Cardona Signed-off-by: John W. Linville

mac80211: Fix STA disconnect due to MIC failure

2010-11-30T18:45:02Z

Th commit titled "mac80211: clean up rx handling wrt. found_sta" removed found_sta variable which caused a MIC failure event to be reported twice for a single failure to supplicant resulted in STA disconnect. This should fix WPA specific countermeasures WiFi test case (5.2.17) issues with mac80211 based drivers which report MIC failure events in rx status. Cc: Stable (2.6.37) Signed-off-by: Senthil Balasubramanian Signed-off-by: John W. Linville

mac80211: ignore non-bcast mcast deauth/disassoc franes

2010-11-30T18:23:06Z

This patch fixes an curious issue due to insufficient rx frame filtering. Saqeb Akhter reported frequent disconnects while streaming videos over samba: > [ 1166.512087] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) > [ 1526.059997] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) > [ 2125.324356] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) > [...] The reason is that the device generates frames with slightly bogus SA/TA addresses. e.g.: [ 2314.402316] Ignore 9f:1f:31:f8:64:ff [ 2314.402321] Ignore 9f:1f:31:f8:64:ff [ 2352.453804] Ignore 0d:1f:31:f8:64:ff [ 2352.453808] Ignore 0d:1f:31:f8:64:ff ^^ the group-address flag is set! (the correct SA/TA would be: 00:1f:31:f8:64:ff) Since the AP does not know from where the frames come, it generates a DEAUTH response for the (invalid) mcast address. This mcast deauth frame then passes through all filters and tricks the stack into thinking that the AP brutally kicked us! This patch fixes the problem by simply ignoring non-broadcast, group-addressed deauth/disassoc frames. Cc: Jouni Malinen Cc: Johannes Berg Reported-by: Saqeb Akhter Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville

mac80211: temporarily disable reorder release timer

2010-10-11T19:04:20Z

Several serve threading problems in the current release reorder timer implementation have been discovered. A lengthy discussion - which lists some of the pitfalls and possible solutions - can be found at: http://marc.info/?t=128635927000001 But due to the complicated nature of the subject and the imminent advent of a new -rc cycle, it was decided to disable the feature for the time being. Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville

cfg80211/mac80211: allow per-station GTKs

2010-10-06T20:30:40Z

This adds API to allow adding per-station GTKs, updates mac80211 to support it, and also allows drivers to remove a key from hwaccel again when this may be necessary due to multiple GTKs. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: fix for WDS interfaces

2010-10-05T17:35:25Z

Initialize the rate table for WDS interfaces, and add cases to allow WDS packets to pass the xmit and receive tests. Signed-off-by: Bill Jordan Signed-off-by: John W. Linville

mac80211: move packet flags into packet

2010-09-27T19:57:54Z

commit 8c0c709eea5cbab97fb464cd68b06f24acc58ee1 Author: Johannes Berg Date: Wed Nov 25 17:46:15 2009 +0100 mac80211: move cmntr flag out of rx flags moved the CMNTR flag into the skb RX flags for some aggregation cleanups, but this was wrong since the optimisation this flag tried to make requires that it is kept across the processing of multiple interfaces -- which isn't true for flags in the skb. The patch not only broke the optimisation, it also introduced a bug: under some (common!) circumstances the flag will be set on an already freed skb! However, investigating this in more detail, I found that most of the flags that we set should be per packet, _except_ for this one, due to a-MPDU processing. Additionally, the flags used for processing (currently just this one) need to be reset before processing a new packet. Since we haven't actually seen bugs reported as a result of the wrong flags handling (which is not too surprising -- the only real bug case I can come up with is an a-MSDU contained in an a-MPDU), I'll make a different fix for rc. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: fix release_reorder_timeout in scan

2010-09-27T19:57:53Z

Even if the reorder timeout timer fires while scanning, the frames weren't received during scanning and therefore shouldn't be dropped. To implement this, changes to the passive scan RX handler simplify understanding it, because it currently checks HW_SCANNING independently of a packet's in-scan receive status (which doesn't make a big difference, since scan_rx() will only pick up probe responses and beacons, which can't be aggregated.) Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: clean up rx handling wrt. found_sta

2010-09-27T19:57:52Z

If a station was found, then we'll have exited the function already, so it is not necessary to have a variable keeping track of it. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville