mac80211: mesh: don't use global channel type

Using local->_oper_channel_type in the mesh code is
completely wrong as this value is the combination
of the various interface channel types and can be
a different value from the mesh interface in case
there are multiple virtual interfaces.

Use sdata->vif.bss_conf.channel_type instead as it
tracks the per-vif channel type.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

2 files changed, 10 insertions, 8 deletions

diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 035cd0c8ce33..f2d0d213bcfb 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -109,11 +109,11 @@ bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
 
         /* Disallow HT40+/- mismatch */
         if (ie->ht_operation &&
-            (local->_oper_channel_type == NL80211_CHAN_HT40MINUS ||
-            local->_oper_channel_type == NL80211_CHAN_HT40PLUS) &&
+            (sdata->vif.bss_conf.channel_type == NL80211_CHAN_HT40MINUS ||
+             sdata->vif.bss_conf.channel_type == NL80211_CHAN_HT40PLUS) &&
             (sta_channel_type == NL80211_CHAN_HT40MINUS ||
              sta_channel_type == NL80211_CHAN_HT40PLUS) &&
-            local->_oper_channel_type != sta_channel_type)
+            sdata->vif.bss_conf.channel_type != sta_channel_type)
                 goto mismatch;
 
         return true;
@@ -375,7 +375,7 @@ int mesh_add_ht_cap_ie(struct sk_buff *skb,
 
         sband = local->hw.wiphy->bands[local->oper_channel->band];
         if (!sband->ht_cap.ht_supported ||
-            local->_oper_channel_type == NL80211_CHAN_NO_HT)
+            sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT)
                 return 0;
 
         if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap))
@@ -392,7 +392,8 @@ int mesh_add_ht_oper_ie(struct sk_buff *skb,
 {
         struct ieee80211_local *local = sdata->local;
         struct ieee80211_channel *channel = local->oper_channel;
-        enum nl80211_channel_type channel_type = local->_oper_channel_type;
+        enum nl80211_channel_type channel_type =
+                                sdata->vif.bss_conf.channel_type;
         struct ieee80211_supported_band *sband =
                                 local->hw.wiphy->bands[channel->band];
         struct ieee80211_sta_ht_cap *ht_cap = &sband->ht_cap;
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index 5fd1250f7866..54ce1af491eb 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -117,7 +117,7 @@ static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata)
         u16 ht_opmode;
         bool non_ht_sta = false, ht20_sta = false;
 
-        if (local->_oper_channel_type == NL80211_CHAN_NO_HT)
+        if (sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT)
                 return 0;
 
         rcu_read_lock();
@@ -147,7 +147,8 @@ out:
 
         if (non_ht_sta)
                 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED;
-        else if (ht20_sta && local->_oper_channel_type > NL80211_CHAN_HT20)
+        else if (ht20_sta &&
+                 sdata->vif.bss_conf.channel_type > NL80211_CHAN_HT20)
                 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ;
         else
                 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
@@ -379,7 +380,7 @@ static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
 
         sta->sta.supp_rates[band] = rates;
         if (elems->ht_cap_elem &&
-            sdata->local->_oper_channel_type != NL80211_CHAN_NO_HT)
+            sdata->vif.bss_conf.channel_type != NL80211_CHAN_NO_HT)
                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
                                                   elems->ht_cap_elem,
                                                   &sta->sta.ht_cap);