Commit 1b1de7aa authored Aug 08, 2011 by Javier Cardona Committed by John W. Linville Aug 10, 2011

mac80211: fix erroneous clearing of MESH_PATH_SN_VALID flag



When a PREQ or PREP is received from an intermediate node, it contains
useful information for path selection but it doesn't include the
originator's sequence number.   Therefore, when updating the mesh path
to that intermediate node, we should not set the MESH_PATH_SN_VALID
flag.  BUT, if the flag is set, it should not be unset as we might have
received a valid sequence number for that intermediate node in the past.

This issue was reported, fixed and tested by Ya Bo (游波) and Pedro
Larbig (ASPj).

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent 9f3a35df

net/mac80211/mesh_hwmp.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -449,7 +449,6 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,

		if (fresh_info) {
		mesh_path_assign_nexthop(mpath, sta);
		mpath->flags &= ~MESH_PATH_SN_VALID;
		mpath->metric = last_hop_metric;
		mpath->exp_time = time_after(mpath->exp_time, exp_time)
		? mpath->exp_time : exp_time;

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