mac80211: Allow nonHT/HT peering in mesh

Now that we have protection enabled, allow non-HT and HT20 stations to peer
with HT40+/- stations. Peering is still disallowed for HT40+/- mismatch.

Signed-off-by: Ashok Nagarajan <ashok@cozybit.com>
Reviewed-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 8a952e04690abbc6981d7f0ce5097f7c9f807100..0fabb8bae9fb4e1263caffe9c56c3d26a68bfa4a 100644 (file)
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -76,6 +76,7 @@ bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
        struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
        struct ieee80211_local *local = sdata->local;
        u32 basic_rates = 0;
+       enum nl80211_channel_type sta_channel_type = NL80211_CHAN_NO_HT;
 
        /*
         * As support for each feature is added, check for matching
@@ -102,10 +103,15 @@ bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
        if (sdata->vif.bss_conf.basic_rates != basic_rates)
                goto mismatch;
 
-       /* disallow peering with mismatched channel types for now */
+       if (ie->ht_operation)
+               sta_channel_type =
+                       ieee80211_ht_oper_to_channel_type(ie->ht_operation);
+
+       /* Disallow HT40+/- mismatch */
        if (ie->ht_operation &&
-           (local->_oper_channel_type !=
-            ieee80211_ht_oper_to_channel_type(ie->ht_operation)))
+           local->_oper_channel_type > NL80211_CHAN_HT20 &&
+           sta_channel_type > NL80211_CHAN_HT20 &&
+           local->_oper_channel_type != sta_channel_type)
                goto mismatch;
 
        return true;