From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yuan-Chi Pang Subject: [PATCH] mac80211: fix HWMP sequence numbering to follow standard Date: Wed, 29 Aug 2018 09:30:08 +0800 Message-ID: <1535506208-17680-1-git-send-email-fu3mo6goo@gmail.com> Cc: davem@davemloft.net, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Yuan-Chi Pang To: johannes@sipsolutions.net Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org 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 --- net/mac80211/mesh_hwmp.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c index 35ad398..daf9db3 100644 --- a/net/mac80211/mesh_hwmp.c +++ b/net/mac80211/mesh_hwmp.c @@ -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)) { -- 2.7.4