mac80211: convert to channel definition struct

Convert mac80211 (and where necessary, some drivers a
little bit) to the new channel definition struct.

This will allow extending mac80211 for VHT, which is
currently restricted to channel contexts since there
are no drivers using that which makes it easier. As
I also don't care about VHT for drivers not using the
channel context API, I won't convert the previous API
to VHT support.

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

1 files changed, 18 insertions, 16 deletions

diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 5648bbed240..11a6a1bde2f 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -52,7 +52,6 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
         u32 bss_change;
         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
         struct cfg80211_chan_def chandef;
-        enum nl80211_channel_type chan_type;
 
         lockdep_assert_held(&ifibss->mtx);
 
@@ -80,13 +79,14 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 
         sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0;
 
-        chan_type = ifibss->channel_type;
-        cfg80211_chandef_create(&chandef, chan, chan_type);
-        if (!cfg80211_reg_can_beacon(local->hw.wiphy, &chandef))
-                chan_type = NL80211_CHAN_HT20;
+        cfg80211_chandef_create(&chandef, chan, ifibss->channel_type);
+        if (!cfg80211_reg_can_beacon(local->hw.wiphy, &chandef)) {
+                chandef.width = NL80211_CHAN_WIDTH_20;
+                chandef.center_freq1 = chan->center_freq;
+        }
 
         ieee80211_vif_release_channel(sdata);
-        if (ieee80211_vif_use_channel(sdata, chan, chan_type,
+        if (ieee80211_vif_use_channel(sdata, &chandef,
                                       ifibss->fixed_channel ?
                                         IEEE80211_CHANCTX_SHARED :
                                         IEEE80211_CHANCTX_EXCLUSIVE)) {
@@ -160,7 +160,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
                        ifibss->ie, ifibss->ie_len);
 
         /* add HT capability and information IEs */
-        if (chan_type != NL80211_CHAN_NO_HT &&
+        if (chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
             sband->ht_cap.ht_supported) {
                 pos = skb_put(skb, 4 +
                                    sizeof(struct ieee80211_ht_cap) +
@@ -173,7 +173,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
                  * keep them at 0
                  */
                 pos = ieee80211_ie_build_ht_oper(pos, &sband->ht_cap,
-                                                 chan, chan_type, 0);
+                                                 &chandef, 0);
         }
 
         if (local->hw.queues >= IEEE80211_NUM_ACS) {
@@ -329,7 +329,7 @@ ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
         if (WARN_ON_ONCE(!chanctx_conf))
                 return NULL;
-        band = chanctx_conf->channel->band;
+        band = chanctx_conf->def.chan->band;
         rcu_read_unlock();
 
         sta = sta_info_alloc(sdata, addr, GFP_KERNEL);
@@ -478,9 +478,11 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
                     sdata->u.ibss.channel_type != NL80211_CHAN_NO_HT) {
                         /* we both use HT */
                         struct ieee80211_sta_ht_cap sta_ht_cap_new;
-                        enum nl80211_channel_type channel_type =
-                                ieee80211_ht_oper_to_channel_type(
-                                                        elems->ht_operation);
+                        struct cfg80211_chan_def chandef;
+
+                        ieee80211_ht_oper_to_chandef(channel,
+                                                     elems->ht_operation,
+                                                     &chandef);
 
                         ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
                                                           elems->ht_cap_elem,
@@ -490,9 +492,9 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
                          * fall back to HT20 if we don't use or use
                          * the other extension channel
                          */
-                        if (!(channel_type == NL80211_CHAN_HT40MINUS ||
-                              channel_type == NL80211_CHAN_HT40PLUS) ||
-                            channel_type != sdata->u.ibss.channel_type)
+                        if (chandef.width != NL80211_CHAN_WIDTH_40 ||
+                            cfg80211_get_chandef_type(&chandef) !=
+                                                sdata->u.ibss.channel_type)
                                 sta_ht_cap_new.cap &=
                                         ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 
@@ -616,7 +618,7 @@ void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
                 rcu_read_unlock();
                 return;
         }
-        band = chanctx_conf->channel->band;
+        band = chanctx_conf->def.chan->band;
         rcu_read_unlock();
 
         sta = sta_info_alloc(sdata, addr, GFP_ATOMIC);