Commit 1f631c32 authored by Yuan-Chi Pang's avatar Yuan-Chi Pang Committed by Johannes Berg

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: default avatarYuan-Chi Pang <fu3mo6goo@gmail.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent b88d26d9
......@@ -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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