cfg80211 API for channels/bitrates, mac80211 and driver conversion

This patch creates new cfg80211 wiphy API for channel and bitrate
registration and converts mac80211 and drivers to the new API. The
old mac80211 API is completely ripped out. All drivers (except ath5k)
are updated to the new API, in many cases I expect that optimisations
can be done.

Along with the regulatory code I've also ripped out the
IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED flag, I believe it to be
unnecessary if the hardware simply gives us whatever channels it wants
to support and we then enable/disable them as required, which is pretty
much required for travelling.

Additionally, the patch adds proper "basic" rate handling for STA
mode interface, AP mode interface will have to have new API added
to allow userspace to set the basic rate set, currently it'll be
empty... However, the basic rate handling will need to be moved to
the BSS conf stuff.

I do expect there to be bugs in this, especially wrt. transmit
power handling where I'm basically clueless about how it should work.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 29 insertions, 37 deletions

diff --git a/net/mac80211/rc80211_simple.c b/net/mac80211/rc80211_simple.c
index 9a78b116acf..c4678905a14 100644
--- a/net/mac80211/rc80211_simple.c
+++ b/net/mac80211/rc80211_simple.c
@@ -35,8 +35,8 @@ static void rate_control_rate_inc(struct ieee80211_local *local,
                                   struct sta_info *sta)
 {
         struct ieee80211_sub_if_data *sdata;
-        struct ieee80211_hw_mode *mode;
-        int i = sta->txrate;
+        struct ieee80211_supported_band *sband;
+        int i = sta->txrate_idx;
         int maxrate;
 
         sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
@@ -45,18 +45,17 @@ static void rate_control_rate_inc(struct ieee80211_local *local,
                 return;
         }
 
-        mode = local->oper_hw_mode;
+        sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
         maxrate = sdata->bss ? sdata->bss->max_ratectrl_rateidx : -1;
 
-        if (i > mode->num_rates)
-                i = mode->num_rates - 2;
+        if (i > sband->n_bitrates)
+                i = sband->n_bitrates - 2;
 
-        while (i + 1 < mode->num_rates) {
+        while (i + 1 < sband->n_bitrates) {
                 i++;
-                if (sta->supp_rates & BIT(i) &&
-                    mode->rates[i].flags & IEEE80211_RATE_SUPPORTED &&
+                if (rate_supported(sta, sband->band, i) &&
                     (maxrate < 0 || i <= maxrate)) {
-                        sta->txrate = i;
+                        sta->txrate_idx = i;
                         break;
                 }
         }
@@ -67,8 +66,8 @@ static void rate_control_rate_dec(struct ieee80211_local *local,
                                   struct sta_info *sta)
 {
         struct ieee80211_sub_if_data *sdata;
-        struct ieee80211_hw_mode *mode;
-        int i = sta->txrate;
+        struct ieee80211_supported_band *sband;
+        int i = sta->txrate_idx;
 
         sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
         if (sdata->bss && sdata->bss->force_unicast_rateidx > -1) {
@@ -76,15 +75,14 @@ static void rate_control_rate_dec(struct ieee80211_local *local,
                 return;
         }
 
-        mode = local->oper_hw_mode;
-        if (i > mode->num_rates)
-                i = mode->num_rates;
+        sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+        if (i > sband->n_bitrates)
+                i = sband->n_bitrates;
 
         while (i > 0) {
                 i--;
-                if (sta->supp_rates & BIT(i) &&
-                    mode->rates[i].flags & IEEE80211_RATE_SUPPORTED) {
-                        sta->txrate = i;
+                if (rate_supported(sta, sband->band, i)) {
+                        sta->txrate_idx = i;
                         break;
                 }
         }
@@ -168,7 +166,7 @@ static void rate_control_simple_tx_status(void *priv, struct net_device *dev,
                 } else if (per_failed < RATE_CONTROL_NUM_UP) {
                         rate_control_rate_inc(local, sta);
                 }
-                srctrl->tx_avg_rate_sum += status->control.rate->rate;
+                srctrl->tx_avg_rate_sum += status->control.tx_rate->bitrate;
                 srctrl->tx_avg_rate_num++;
                 srctrl->tx_num_failures = 0;
                 srctrl->tx_num_xmit = 0;
@@ -201,7 +199,7 @@ static void rate_control_simple_tx_status(void *priv, struct net_device *dev,
 
 static void
 rate_control_simple_get_rate(void *priv, struct net_device *dev,
-                             struct ieee80211_hw_mode *mode,
+                             struct ieee80211_supported_band *sband,
                              struct sk_buff *skb,
                              struct rate_selection *sel)
 {
@@ -219,7 +217,7 @@ rate_control_simple_get_rate(void *priv, struct net_device *dev,
         fc = le16_to_cpu(hdr->frame_control);
         if ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
             is_multicast_ether_addr(hdr->addr1) || !sta) {
-                sel->rate = rate_lowest(local, mode, sta);
+                sel->rate = rate_lowest(local, sband, sta);
                 if (sta)
                         sta_info_put(sta);
                 return;
@@ -228,18 +226,18 @@ rate_control_simple_get_rate(void *priv, struct net_device *dev,
         /* If a forced rate is in effect, select it. */
         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
         if (sdata->bss && sdata->bss->force_unicast_rateidx > -1)
-                sta->txrate = sdata->bss->force_unicast_rateidx;
+                sta->txrate_idx = sdata->bss->force_unicast_rateidx;
 
-        rateidx = sta->txrate;
+        rateidx = sta->txrate_idx;
 
-        if (rateidx >= mode->num_rates)
-                rateidx = mode->num_rates - 1;
+        if (rateidx >= sband->n_bitrates)
+                rateidx = sband->n_bitrates - 1;
 
-        sta->last_txrate = rateidx;
+        sta->last_txrate_idx = rateidx;
 
         sta_info_put(sta);
 
-        sel->rate = &mode->rates[rateidx];
+        sel->rate = &sband->bitrates[rateidx];
 }
 
 
@@ -247,21 +245,15 @@ static void rate_control_simple_rate_init(void *priv, void *priv_sta,
                                           struct ieee80211_local *local,
                                           struct sta_info *sta)
 {
-        struct ieee80211_hw_mode *mode;
-        int i;
-        sta->txrate = 0;
-        mode = local->oper_hw_mode;
+        struct ieee80211_supported_band *sband;
+
+        sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
         /* TODO: This routine should consider using RSSI from previous packets
          * as we need to have IEEE 802.1X auth succeed immediately after assoc..
          * Until that method is implemented, we will use the lowest supported rate
          * as a workaround, */
-        for (i = 0; i < mode->num_rates; i++) {
-                if ((sta->supp_rates & BIT(i)) &&
-                    (mode->rates[i].flags & IEEE80211_RATE_SUPPORTED)) {
-                        sta->txrate = i;
-                        break;
-                }
-        }
+        sta->txrate_idx = rate_lowest_index(local, sband, sta);
 }