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linux/net/mac80211
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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 mac80111: aes_ccm: cleanup ieee80211_aes_key_setup_encrypt() 2015-03-30 10:40:03 +02:00
aes_ccm.h mac80111: Add CCMP-256 cipher 2015-01-27 11:07:35 +01:00
aes_cmac.c mac80111: Add BIP-CMAC-256 cipher 2015-01-27 11:09:13 +01:00
aes_cmac.h mac80111: Add BIP-CMAC-256 cipher 2015-01-27 11:09:13 +01:00
aes_gcm.c mac80111: aes_gcm: clean up ieee80211_aes_gcm_key_setup_encrypt() 2015-03-30 10:42:02 +02:00
aes_gcm.h mac80111: Add GCMP and GCMP-256 ciphers 2015-01-27 11:06:09 +01:00
aes_gmac.c mac80211: Fix misplaced return in AES-GMAC key setup 2015-03-30 10:38:07 +02:00
aes_gmac.h mac80111: Add BIP-GMAC-128 and BIP-GMAC-256 ciphers 2015-01-27 11:10:13 +01:00
agg-rx.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-02 16:16:53 -04:00
agg-tx.c mac80211: add an intermediate software queue implementation 2015-04-01 20:44:34 +02:00
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 mac80211: clear sdata->radar_required 2015-02-24 10:51:06 +01:00
debug.h mac80211: 802.11p OCB mode support 2014-11-04 13:18:21 +01:00
debugfs_key.c mac80111: Add BIP-GMAC-128 and BIP-GMAC-256 ciphers 2015-01-27 11:10:13 +01:00
debugfs_key.h
debugfs_netdev.c mac80211: remove drop_unencrypted code 2015-03-20 11:37:36 +01:00
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
debugfs.c mac80211: remove drop_unencrypted code 2015-03-20 11:37:36 +01:00
debugfs.h mac80211: fix some missing includes 2014-04-09 14:49:43 +02:00
driver-ops.h mac80211: add an intermediate software queue implementation 2015-04-01 20:44:34 +02:00
ethtool.c cfg80211: remove enum station_info_flags 2015-01-08 15:28:10 +01:00
event.c
ht.c mac80211: add VHT support for IBSS 2015-03-30 10:48:26 +02:00
ibss.c Lots of updates for net-next; along with the usual flurry 2015-03-31 16:39:04 -04:00
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 mac80111: Add GCMP and GCMP-256 ciphers 2015-01-27 11:06:09 +01:00
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 mac80211: use oneshot blink API for LED triggers 2013-08-01 10:48:49 +02:00
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 mac80111: Add BIP-GMAC-128 and BIP-GMAC-256 ciphers 2015-01-27 11:10:13 +01:00
mesh_hwmp.c mac80211: remove unnecessary break after return 2014-07-15 16:27:00 -07:00
mesh_pathtbl.c mac80211: implement cfg80211_ops to query mesh proxy path table 2014-10-09 11:19:07 +02:00
mesh_plink.c mac80211: add VHT support for IBSS 2015-03-30 10:48:26 +02:00
mesh_ps.c mac80211: clear sequence/fragment number in QoS-null frames 2014-03-05 15:49:54 +01:00
mesh_sync.c mac80211: remove BUG_ON usage 2014-04-29 17:59:27 +02:00
mesh.c Lots of updates for net-next; along with the usual flurry 2015-03-31 16:39:04 -04:00
mesh.h mac80211: implement cfg80211_ops to query mesh proxy path table 2014-10-09 11:19:07 +02:00
michael.c
michael.h mac80211: fix some missing includes 2014-04-09 14:49:43 +02:00
mlme.c mac80211: reduce log spam from ieee80211_handle_pwr_constr 2015-04-01 20:44:34 +02:00
ocb.c mac80211: 802.11p OCB mode support 2014-11-04 13:18:21 +01:00
offchannel.c mac80211: let flush() drop packets when possible 2015-01-14 09:31:18 +01:00
pm.c mac80211: start queues if driver rejected wowlan 2015-03-04 10:34:09 +01:00
rate.c mac80211: add more missing checks for VHT tx rates 2014-11-28 14:24:23 +01:00
rate.h mac80211: add ieee80211_tx_status_noskb 2014-11-28 15:01:51 +01:00
rc80211_minstrel_debugfs.c mac80211: add standard deviation to Minstrel stats 2015-04-01 20:44:33 +02:00
rc80211_minstrel_ht_debugfs.c mac80211: add standard deviation to Minstrel stats 2015-04-01 20:44:33 +02:00
rc80211_minstrel_ht.c mac80211: add max lossless throughput per rate 2015-04-01 20:44:32 +02:00
rc80211_minstrel_ht.h mac80211: add max lossless throughput per rate 2015-04-01 20:44:32 +02:00
rc80211_minstrel.c mac80211: add standard deviation to Minstrel stats 2015-04-01 20:44:33 +02:00
rc80211_minstrel.h 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 mac80211: IBSS fix scan request 2015-03-30 10:47:56 +02:00
spectmgmt.c mac80211: remove unused variable in ieee80211_parse_ch_switch_ie() 2014-12-17 15:45:17 +01:00
sta_info.c mac80211: enable hash table shrinking 2015-04-24 11:11:57 +02:00
sta_info.h There isn't much left, but we have 2015-04-12 20:43:46 -04:00
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_msg.h mac80211: Move message tracepoints to their own header 2015-04-07 12:32:09 -04:00
trace.c mac80211: Move message tracepoints to their own header 2015-04-07 12:32:09 -04:00
trace.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2015-04-15 09:00:47 -07:00
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 mac80211: synchronously reserve TID per station 2014-11-19 18:45:36 +01:00
wme.h mac80211: add WMM admission control support 2014-10-22 10:42:09 +02:00
wpa.c mac80211: Get IV len from key conf and not cipher scheme 2015-03-17 12:34:26 +01:00
wpa.h mac80111: Add BIP-GMAC-128 and BIP-GMAC-256 ciphers 2015-01-27 11:10:13 +01:00