github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-24 06:24:02 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

wifi: cfg80211: Avoid UNPROT_BEACON on AP interfaces

Browse Source 
Currently, an AP may receive unprotected beacons from neighbouring
BSSes, which cfg80211_rx_unprot_mlme_mgmt() forwards to userspace via
NL80211_CMD_UNPROT_BEACON regardless of interface type.

While the kernel rate-limits these events to once per 10 seconds per
wdev, in multi-BSS scenarios each AP interface maintains its own
rate-limit state, increasing the number of reported events.
In AP mode, hostapd has no handler for NL80211_CMD_UNPROT_BEACON and
logs an unhandled event message for each occurrence, leading to excessive
log noise and making it harder to identify real issues.

Since an AP does not need to act on unprotected beacons from neighbouring
BSSes, skip reporting this event when operating in AP mode.

Signed-off-by: Dhanavandhana Kannan <dhanavandhana.kannan@oss.qualcomm.com>
Link: https://patch.msgid.link/20260623103412.1578812-1-dhanavandhana.kannan@oss.qualcomm.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Dhanavandhana Kannan 2026-06-23 16:04:12 +05:30 committed by Johannes Berg
parent 84442442e0
commit 5e20d72350
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
net/wireless/nl80211.c
View File

@ -20903,6 +20903,9 @@ void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
} else if (ieee80211_is_disassoc(mgmt->frame_control)) {
event.cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
} else if (ieee80211_is_beacon(mgmt->frame_control)) {
if (wdev->iftype == NL80211_IFTYPE_AP ||
wdev->iftype == NL80211_IFTYPE_P2P_GO)
return;
if (wdev->unprot_beacon_reported &&
elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
return;