original_kernel/net/mac80211
Karl Beldan 11b2357d5d mac80211: minstrels: fix buffer overflow in HT debugfs rc_stats
ATM an HT rc_stats line is 106 chars.
Times 8(MCS_GROUP_RATES)*3(SS)*2(GI)*2(BW) + CCK(4), i.e. x100, this is
well above the current 8192 - sizeof(*ms) currently allocated.

Fix this by squeezing the output as follows (not that we're short on
memory but this also improves readability and range, the new format adds
one more digit to *ok/*cum and ok/cum):

- Before (HT) (106 ch):
type           rate     throughput  ewma prob   this prob  retry   this succ/attempt   success    attempts
CCK/LP          5.5M           0.0        0.0         0.0      0              0(  0)         0           0
HT20/LGI ABCDP MCS0            0.0        0.0         0.0      1              0(  0)         0           0
- After (75 ch):
type           rate     tpt eprob *prob ret  *ok(*cum)        ok(      cum)
CCK/LP          5.5M    0.0   0.0   0.0   0    0(   0)         0(        0)
HT20/LGI ABCDP MCS0     0.0   0.0   0.0   1    0(   0)         0(        0)

- Align non-HT format Before (non-HT) (83 ch):
rate      throughput  ewma prob  this prob  this succ/attempt   success    attempts
ABCDP  6         0.0        0.0        0.0             0(  0)         0           0
      54         0.0        0.0        0.0             0(  0)         0           0
- After (61 ch):
rate          tpt eprob *prob  *ok(*cum)        ok(      cum)
ABCDP  1      0.0   0.0   0.0    0(   0)         0(        0)
      54      0.0   0.0   0.0    0(   0)         0(        0)

*This also adds dynamic checks for overflow, lowers the size of the
non-HT request (allowing > 30 entries) and replaces the buddy-rounded
allocations (s/sizeof(*ms) + 8192/8192).

Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-10-20 16:37:01 +02:00
..
Kconfig
Makefile
aes_ccm.c
aes_ccm.h
aes_cmac.c
aes_cmac.h
agg-rx.c
agg-tx.c
cfg.c mac80211: return the vif's chandef in ieee80211_cfg_get_channel() 2014-10-09 11:01:58 +02:00
cfg.h
chan.c
debug.h
debugfs.c
debugfs.h
debugfs_key.c
debugfs_key.h
debugfs_netdev.c
debugfs_netdev.h
debugfs_sta.c
debugfs_sta.h
driver-ops.h
ethtool.c
event.c
ht.c
ibss.c
ieee80211_i.h
iface.c
key.c
key.h
led.c
led.h
main.c
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
offchannel.c
pm.c
rate.c mac80211: fix typo in starting baserate for rts_cts_rate_idx 2014-10-14 11:16:16 +02:00
rate.h
rc80211_minstrel.c
rc80211_minstrel.h
rc80211_minstrel_debugfs.c mac80211: minstrels: fix buffer overflow in HT debugfs rc_stats 2014-10-20 16:37:01 +02:00
rc80211_minstrel_ht.c
rc80211_minstrel_ht.h
rc80211_minstrel_ht_debugfs.c mac80211: minstrels: fix buffer overflow in HT debugfs rc_stats 2014-10-20 16:37:01 +02:00
rx.c
scan.c
spectmgmt.c
sta_info.c
sta_info.h
status.c
tdls.c
tkip.c
tkip.h
trace.c
trace.h
tx.c
util.c
vht.c
wep.c
wep.h
wme.c
wme.h
wpa.c
wpa.h