Commit 1f631c32 authored Aug 29, 2018 by Yuan-Chi Pang Committed by Johannes Berg Aug 29, 2018

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>

parent b88d26d9

net/mac80211/mesh_hwmp.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -572,6 +572,10 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
		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)) {

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