A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 03:27:44 -04:00
Code Issues Projects Releases Packages Wiki Activity

cfg80211: dynamically allocate per-tid stats for station info

Browse source 
With the addition of TXQ stats in the per-tid statistics the struct
station_info grew significantly. This resulted in stack size warnings
due to the structure itself being above the limit for the warnings.

Add an allocation function that those who want to provide per-tid
stats should use to allocate the tid array, i.e.
struct station_info::pertid.

Cc: Toke Høiland-Jørgensen <[email protected]>
Fixes: 52539ca89f ("cfg80211: Expose TXQ stats and parameters to userspace")
Signed-off-by: Arend van Spriel <[email protected]>
[johannes: fix missing BIT() and logic by removing]
Signed-off-by: Johannes Berg <[email protected]>
This commit is contained in:
Arend van Spriel 2018-05-10 13:50:12 +02:00 • committed by Johannes Berg
commit 8689c051a2
4 changed files with 27 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

3
net/wireless/nl80211.c
View file

@ -4658,7 +4658,7 @@ static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
#undef PUT_SINFO
#undef PUT_SINFO_U64
if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
if (sinfo->pertid) {
struct nlattr *tidsattr;
int tid;
@ -4702,6 +4702,7 @@ static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
}
nla_nest_end(msg, tidsattr);
kfree(sinfo->pertid);
}
nla_nest_end(msg, sinfoattr);

11
net/wireless/util.c
View file

@ -1787,6 +1787,17 @@ bool cfg80211_does_bw_fit_range(const struct ieee80211_freq_range *freq_range,
return false;
}
int cfg80211_sinfo_alloc_tid_stats(struct station_info *sinfo, gfp_t gfp)
{
sinfo->pertid = kcalloc(sizeof(*(sinfo->pertid)),
IEEE80211_NUM_TIDS + 1, gfp);
if (!sinfo->pertid)
return -ENOMEM;
return 0;
}
EXPORT_SYMBOL(cfg80211_sinfo_alloc_tid_stats);
/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
const unsigned char rfc1042_header[] __aligned(2) =