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
aes_gcm.c
aes_gcm.h
aes_gmac.c
aes_gmac.h
agg-rx.c
agg-tx.c
cfg.c
cfg.h
chan.c
debug.h
debugfs_key.c
debugfs_key.h
debugfs_netdev.c
debugfs_netdev.h
debugfs_sta.c
debugfs_sta.h
debugfs.c
debugfs.h
driver-ops.h
ethtool.c
event.c
ht.c
ibss.c
ieee80211_i.h
iface.c
Kconfig
key.c
key.h
led.c
led.h
main.c
Makefile
mesh_hwmp.c
mesh_pathtbl.c
mesh_plink.c
mesh_ps.c
mesh_sync.c
mesh.c
mesh.h
michael.c
michael.h
mlme.c
ocb.c
offchannel.c
pm.c
rate.c
rate.h
rc80211_minstrel_debugfs.c
rc80211_minstrel_ht_debugfs.c
rc80211_minstrel_ht.c
rc80211_minstrel_ht.h
rc80211_minstrel.c
rc80211_minstrel.h
rx.c
scan.c
spectmgmt.c
sta_info.c
sta_info.h
status.c
tdls.c
tkip.c
tkip.h
trace_msg.h
trace.c
trace.h
tx.c
util.c
vht.c
wep.c
wep.h
wme.c
wme.h
wpa.c
wpa.h