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, 56 insertions, 26 deletions

diff --git a/drivers/net/wireless/rtl8187_dev.c b/drivers/net/wireless/rtl8187_dev.c
index f44505994a0e..6ef67990692d 100644
--- a/drivers/net/wireless/rtl8187_dev.c
+++ b/drivers/net/wireless/rtl8187_dev.c
@@ -45,6 +45,38 @@ static struct usb_device_id rtl8187_table[] __devinitdata = {
 
 MODULE_DEVICE_TABLE(usb, rtl8187_table);
 
+static const struct ieee80211_rate rtl818x_rates[] = {
+	{ .bitrate = 10, .hw_value = 0, },
+	{ .bitrate = 20, .hw_value = 1, },
+	{ .bitrate = 55, .hw_value = 2, },
+	{ .bitrate = 110, .hw_value = 3, },
+	{ .bitrate = 60, .hw_value = 4, },
+	{ .bitrate = 90, .hw_value = 5, },
+	{ .bitrate = 120, .hw_value = 6, },
+	{ .bitrate = 180, .hw_value = 7, },
+	{ .bitrate = 240, .hw_value = 8, },
+	{ .bitrate = 360, .hw_value = 9, },
+	{ .bitrate = 480, .hw_value = 10, },
+	{ .bitrate = 540, .hw_value = 11, },
+};
+
+static const struct ieee80211_channel rtl818x_channels[] = {
+	{ .center_freq = 2412 },
+	{ .center_freq = 2417 },
+	{ .center_freq = 2422 },
+	{ .center_freq = 2427 },
+	{ .center_freq = 2432 },
+	{ .center_freq = 2437 },
+	{ .center_freq = 2442 },
+	{ .center_freq = 2447 },
+	{ .center_freq = 2452 },
+	{ .center_freq = 2457 },
+	{ .center_freq = 2462 },
+	{ .center_freq = 2467 },
+	{ .center_freq = 2472 },
+	{ .center_freq = 2484 },
+};
+
 static void rtl8187_iowrite_async_cb(struct urb *urb)
 {
 	kfree(urb->context);
@@ -146,8 +178,8 @@ static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
 
 	flags = skb->len;
 	flags |= RTL8187_TX_FLAG_NO_ENCRYPT;
-	flags |= control->rts_cts_rate << 19;
-	flags |= control->tx_rate << 24;
+	flags |= control->rts_cts_rate->hw_value << 19;
+	flags |= control->tx_rate->hw_value << 24;
 	if (ieee80211_get_morefrag((struct ieee80211_hdr *)skb->data))
 		flags |= RTL8187_TX_FLAG_MORE_FRAG;
 	if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
@@ -225,10 +257,9 @@ static void rtl8187_rx_cb(struct urb *urb)
 	rx_status.antenna = (hdr->signal >> 7) & 1;
 	rx_status.signal = 64 - min(hdr->noise, (u8)64);
 	rx_status.ssi = signal;
-	rx_status.rate = rate;
-	rx_status.freq = dev->conf.freq;
-	rx_status.channel = dev->conf.channel;
-	rx_status.phymode = dev->conf.phymode;
+	rx_status.rate_idx = rate;
+	rx_status.freq = dev->conf.channel->center_freq;
+	rx_status.band = dev->conf.channel->band;
 	rx_status.mactime = le64_to_cpu(hdr->mac_time);
 	rx_status.flag |= RX_FLAG_TSFT;
 	if (flags & (1 << 13))
@@ -682,19 +713,22 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
 	usb_get_dev(udev);
 
 	skb_queue_head_init(&priv->rx_queue);
+
+	BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
+	BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
+
 	memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 	memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 	priv->map = (struct rtl818x_csr *)0xFF00;
-	priv->modes[0].mode = MODE_IEEE80211G;
-	priv->modes[0].num_rates = ARRAY_SIZE(rtl818x_rates);
-	priv->modes[0].rates = priv->rates;
-	priv->modes[0].num_channels = ARRAY_SIZE(rtl818x_channels);
-	priv->modes[0].channels = priv->channels;
-	priv->modes[1].mode = MODE_IEEE80211B;
-	priv->modes[1].num_rates = 4;
-	priv->modes[1].rates = priv->rates;
-	priv->modes[1].num_channels = ARRAY_SIZE(rtl818x_channels);
-	priv->modes[1].channels = priv->channels;
+
+	priv->band.band = IEEE80211_BAND_2GHZ;
+	priv->band.channels = priv->channels;
+	priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
+	priv->band.bitrates = priv->rates;
+	priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
+	dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
+
+
 	priv->mode = IEEE80211_IF_TYPE_MNTR;
 	dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 		     IEEE80211_HW_RX_INCLUDES_FCS;
@@ -703,10 +737,6 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
 	dev->max_rssi = 65;
 	dev->max_signal = 64;
 
-	for (i = 0; i < 2; i++)
-		if ((err = ieee80211_register_hwmode(dev, &priv->modes[i])))
-			goto err_free_dev;
-
 	eeprom.data = dev;
 	eeprom.register_read = rtl8187_eeprom_register_read;
 	eeprom.register_write = rtl8187_eeprom_register_write;
@@ -730,20 +760,20 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
 	for (i = 0; i < 3; i++) {
 		eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
 				  &txpwr);
-		(*channel++).val = txpwr & 0xFF;
-		(*channel++).val = txpwr >> 8;
+		(*channel++).hw_value = txpwr & 0xFF;
+		(*channel++).hw_value = txpwr >> 8;
 	}
 	for (i = 0; i < 2; i++) {
 		eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
 				  &txpwr);
-		(*channel++).val = txpwr & 0xFF;
-		(*channel++).val = txpwr >> 8;
+		(*channel++).hw_value = txpwr & 0xFF;
+		(*channel++).hw_value = txpwr >> 8;
 	}
 	for (i = 0; i < 2; i++) {
 		eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6 + i,
 				  &txpwr);
-		(*channel++).val = txpwr & 0xFF;
-		(*channel++).val = txpwr >> 8;
+		(*channel++).hw_value = txpwr & 0xFF;
+		(*channel++).hw_value = txpwr >> 8;
 	}
 
 	eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,