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