openwrt/package/kernel/mac80211/patches/383-mac80211-mesh-fix-HWMP-sequence-numbering-to-follow-.patch
Koen Vandeputte 77024a9d95 mac80211: backport upstream fixes
Backport most significant upstream fixes (excl. hwsim fixes)
Refreshed all patches.

Contains important fixes for CSA (Channel Switch Announcement)
and A-MSDU frames.

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2018-09-07 17:21:24 +02:00

29 lines
932 B
Diff

From: Yuan-Chi Pang <fu3mo6goo@gmail.com>
Date: Wed, 29 Aug 2018 09:30:08 +0800
Subject: [PATCH] mac80211: mesh: fix HWMP sequence numbering to follow
standard
IEEE 802.11-2016 14.10.8.3 HWMP sequence numbering says:
If it is a target mesh STA, it shall update its own HWMP SN to
maximum (current HWMP SN, target HWMP SN in the PREQ element) + 1
immediately before it generates a PREP element in response to a
PREQ element.
Signed-off-by: Yuan-Chi Pang <fu3mo6goo@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -572,6 +572,10 @@ static void hwmp_preq_frame_process(stru
forward = false;
reply = true;
target_metric = 0;
+
+ if (SN_GT(target_sn, ifmsh->sn))
+ ifmsh->sn = target_sn;
+
if (time_after(jiffies, ifmsh->last_sn_update +
net_traversal_jiffies(sdata)) ||
time_before(jiffies, ifmsh->last_sn_update)) {