linux/net/mac80211
Michal Kazior f9dca80b98 mac80211: fix AP_VLAN crypto tailroom calculation
Some splats I was seeing:

 (a) WARNING: CPU: 1 PID: 0 at /devel/src/linux/net/mac80211/wep.c:102 ieee80211_wep_add_iv
 (b) WARNING: CPU: 1 PID: 0 at /devel/src/linux/net/mac80211/wpa.c:73 ieee80211_tx_h_michael_mic_add
 (c) WARNING: CPU: 3 PID: 0 at /devel/src/linux/net/mac80211/wpa.c:433 ieee80211_crypto_ccmp_encrypt

I've seen (a) and (b) with ath9k hw crypto and (c)
with ath9k sw crypto. All of them were related to
insufficient skb tailroom and I was able to
trigger these with ping6 program.

AP_VLANs may inherit crypto keys from parent AP.
This wasn't considered and yielded problems in
some setups resulting in inability to transmit
data because mac80211 wouldn't resize skbs when
necessary and subsequently drop some packets due
to insufficient tailroom.

For efficiency purposes don't inspect both AP_VLAN
and AP sdata looking for tailroom counter. Instead
update AP_VLAN tailroom counters whenever their
master AP tailroom counter changes.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-05-20 15:10:11 +02:00
..
aes_ccm.c
aes_ccm.h
aes_cmac.c
aes_cmac.h mac80111: Add BIP-CMAC-256 cipher 2015-01-27 11:09:13 +01:00
aes_gcm.c
aes_gcm.h
aes_gmac.c
aes_gmac.h
agg-rx.c
agg-tx.c
cfg.c mac80211: don't split remain-on-channel for coalescing 2015-05-20 15:09:22 +02:00
cfg.h mac80211: make cfg80211 ops and privid const 2014-02-04 21:48:21 +01:00
chan.c
debug.h
debugfs.c mac80211: remove drop_unencrypted code 2015-03-20 11:37:36 +01:00
debugfs.h
debugfs_key.c
debugfs_key.h
debugfs_netdev.c
debugfs_netdev.h mac80211: fix some missing includes 2014-04-09 14:49:43 +02:00
debugfs_sta.c mac80211: remove TX latency measurement code 2015-02-28 21:31:11 +01:00
debugfs_sta.h
driver-ops.h mac80211: add an intermediate software queue implementation 2015-04-01 20:44:34 +02:00
ethtool.c
event.c
ht.c
ibss.c
ieee80211_i.h mac80211: don't split remain-on-channel for coalescing 2015-05-20 15:09:22 +02:00
iface.c mac80211: fix AP_VLAN crypto tailroom calculation 2015-05-20 15:10:11 +02:00
Kconfig
key.c mac80211: fix AP_VLAN crypto tailroom calculation 2015-05-20 15:10:11 +02:00
key.h mac80211: fix AP_VLAN crypto tailroom calculation 2015-05-20 15:10:11 +02:00
led.c
led.h mac80211: use oneshot blink API for LED triggers 2013-08-01 10:48:49 +02:00
main.c mac80211: add an intermediate software queue implementation 2015-04-01 20:44:34 +02:00
Makefile
mesh.c
mesh.h
mesh_hwmp.c
mesh_pathtbl.c
mesh_plink.c
mesh_ps.c
mesh_sync.c
michael.c
michael.h
mlme.c
ocb.c mac80211: 802.11p OCB mode support 2014-11-04 13:18:21 +01:00
offchannel.c
pm.c
rate.c
rate.h
rc80211_minstrel.c
rc80211_minstrel.h
rc80211_minstrel_debugfs.c
rc80211_minstrel_ht.c mac80211: add max lossless throughput per rate 2015-04-01 20:44:32 +02:00
rc80211_minstrel_ht.h
rc80211_minstrel_ht_debugfs.c mac80211: add standard deviation to Minstrel stats 2015-04-01 20:44:33 +02:00
rx.c mac80211: don't use napi_gro_receive() outside NAPI context 2015-05-19 15:46:21 +02:00
scan.c
spectmgmt.c
sta_info.c mac80211: enable hash table shrinking 2015-04-24 11:11:57 +02:00
sta_info.h
status.c mac80211: use rhashtable for station table 2015-04-01 10:06:26 +02:00
tdls.c mac80211: send HT/VHT IEs in TDLS discovery response 2015-03-30 10:48:59 +02:00
tkip.c mac80211: fix checkpatch errors 2013-12-18 10:33:06 +01:00
tkip.h
trace.c
trace.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2015-04-15 09:00:47 -07:00
trace_msg.h
tx.c mac80211: add an intermediate software queue implementation 2015-04-01 20:44:34 +02:00
util.c mac80211: fix AP_VLAN crypto tailroom calculation 2015-05-20 15:10:11 +02:00
vht.c mac80211: TDLS: support VHT between peers 2015-03-03 15:56:07 +01:00
wep.c mac80211: move WEP tailroom size check 2015-05-11 14:51:29 +02:00
wep.h
wme.c
wme.h mac80211: add WMM admission control support 2014-10-22 10:42:09 +02:00
wpa.c
wpa.h