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, 16 insertions, 19 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c
index 8d4d91d35fd..50d927bb217 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.c
@@ -247,7 +247,7 @@ static void iwl3945_add_radiotap(struct iwl3945_priv *priv,
 	 * the information provided in the skb from the hardware */
 	s8 signal = stats->ssi;
 	s8 noise = 0;
-	int rate = stats->rate;
+	int rate = stats->rate_idx;
 	u64 tsf = stats->mactime;
 	__le16 phy_flags_hw = rx_hdr->phy_flags;
 
@@ -315,7 +315,6 @@ static void iwl3945_add_radiotap(struct iwl3945_priv *priv,
 					  IEEE80211_CHAN_2GHZ),
 			      &iwl3945_rt->rt_chbitmask);
 
-	rate = iwl3945_rate_index_from_plcp(rate);
 	if (rate == -1)
 		iwl3945_rt->rt_rate = 0;
 	else
@@ -387,11 +386,10 @@ static void iwl3945_rx_reply_rx(struct iwl3945_priv *priv,
 	struct ieee80211_rx_status stats = {
 		.mactime = le64_to_cpu(rx_end->timestamp),
 		.freq = ieee80211chan2mhz(le16_to_cpu(rx_hdr->channel)),
-		.channel = le16_to_cpu(rx_hdr->channel),
-		.phymode = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
-		MODE_IEEE80211G : MODE_IEEE80211A,
+		.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
+		IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ,
 		.antenna = 0,
-		.rate = rx_hdr->rate,
+		.rate_idx = iwl3945_rate_index_from_plcp(rx_hdr->rate),
 		.flag = 0,
 	};
 	u8 network_packet;
@@ -450,8 +448,6 @@ static void iwl3945_rx_reply_rx(struct iwl3945_priv *priv,
 			stats.ssi, stats.noise, stats.signal,
 			rx_stats_sig_avg, rx_stats_noise_diff);
 
-	stats.freq = ieee80211chan2mhz(stats.channel);
-
 	/* can be covered by iwl3945_report_frame() in most cases */
 /*      IWL_DEBUG_RX("RX status: 0x%08X\n", rx_end->status); */
 
@@ -464,8 +460,9 @@ static void iwl3945_rx_reply_rx(struct iwl3945_priv *priv,
 		IWL_DEBUG_STATS
 		    ("[%c] %d RSSI: %d Signal: %u, Noise: %u, Rate: %u\n",
 		     network_packet ? '*' : ' ',
-		     stats.channel, stats.ssi, stats.ssi,
-		     stats.ssi, stats.rate);
+		     le16_to_cpu(rx_hdr->channel),
+		     stats.ssi, stats.ssi,
+		     stats.ssi, stats.rate_idx);
 
 	if (iwl3945_debug_level & (IWL_DL_RX))
 		/* Set "1" to report good data frames in groups of 100 */
@@ -689,7 +686,7 @@ void iwl3945_hw_build_tx_cmd_rate(struct iwl3945_priv *priv,
 			      struct ieee80211_hdr *hdr, int sta_id, int tx_id)
 {
 	unsigned long flags;
-	u16 rate_index = min(ctrl->tx_rate & 0xffff, IWL_RATE_COUNT - 1);
+	u16 rate_index = min(ctrl->tx_rate->hw_value & 0xffff, IWL_RATE_COUNT - 1);
 	u16 rate_mask;
 	int rate;
 	u8 rts_retry_limit;
@@ -1552,14 +1549,14 @@ int iwl3945_hw_reg_send_txpower(struct iwl3945_priv *priv)
 		.channel = priv->active_rxon.channel,
 	};
 
-	txpower.band = (priv->phymode == MODE_IEEE80211A) ? 0 : 1;
+	txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1;
 	ch_info = iwl3945_get_channel_info(priv,
-				       priv->phymode,
+				       priv->band,
 				       le16_to_cpu(priv->active_rxon.channel));
 	if (!ch_info) {
 		IWL_ERROR
 		    ("Failed to get channel info for channel %d [%d]\n",
-		     le16_to_cpu(priv->active_rxon.channel), priv->phymode);
+		     le16_to_cpu(priv->active_rxon.channel), priv->band);
 		return -EINVAL;
 	}
 
@@ -2241,8 +2238,8 @@ int iwl3945_init_hw_rate_table(struct iwl3945_priv *priv)
 		table[index].next_rate_index = iwl3945_rates[prev_index].table_rs_index;
 	}
 
-	switch (priv->phymode) {
-	case MODE_IEEE80211A:
+	switch (priv->band) {
+	case IEEE80211_BAND_5GHZ:
 		IWL_DEBUG_RATE("Select A mode rate scale\n");
 		/* If one of the following CCK rates is used,
 		 * have it fall back to the 6M OFDM rate */
@@ -2257,8 +2254,8 @@ int iwl3945_init_hw_rate_table(struct iwl3945_priv *priv)
 		    iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
 		break;
 
-	case MODE_IEEE80211B:
-		IWL_DEBUG_RATE("Select B mode rate scale\n");
+	case IEEE80211_BAND_2GHZ:
+		IWL_DEBUG_RATE("Select B/G mode rate scale\n");
 		/* If an OFDM rate is used, have it fall back to the
 		 * 1M CCK rates */
 		for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE; i++)
@@ -2269,7 +2266,7 @@ int iwl3945_init_hw_rate_table(struct iwl3945_priv *priv)
 		break;
 
 	default:
-		IWL_DEBUG_RATE("Select G mode rate scale\n");
+		WARN_ON(1);
 		break;
 	}