mac80211: Only process mesh PREPs with equal seq number if metric is better.

This fixes routing loops in PREP propagation and is in accordance with Draft
11, Section: 11C.9.8.4.

Signed-off-by: Fabrice Deyber <[email protected]>
Signed-off-by: Javier Cardona <[email protected]>
Signed-off-by: John W. Linville <[email protected]>

diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index e57f2e728cfe5bb08d5e0ededd06209baef36702..849fecd0820e49dd0dcbbac89d1d2ee275edba6f 100644 (file)
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -391,7 +391,6 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
                            (mpath->flags & MESH_PATH_SN_VALID)) {
                                if (SN_GT(mpath->sn, orig_sn) ||
                                    (mpath->sn == orig_sn &&
-                                    action == MPATH_PREQ &&
                                     new_metric >= mpath->metric)) {
                                        process = false;
                                        fresh_info = false;