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- From: Yuan-Chi Pang <[email protected]>
- 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 <[email protected]>
- Signed-off-by: Johannes Berg <[email protected]>
- ---
- --- 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)) {
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