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, 13 insertions, 50 deletions

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 9d09ba8cc02b..54eea5f24474 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -79,8 +79,7 @@ struct ieee80211_sta_bss {
 	u8 ssid[IEEE80211_MAX_SSID_LEN];
 	size_t ssid_len;
 	u16 capability; /* host byte order */
-	int hw_mode;
-	int channel;
+	enum ieee80211_band band;
 	int freq;
 	int rssi, signal, noise;
 	u8 *wpa_ie;
@@ -136,13 +135,12 @@ struct ieee80211_txrx_data {
 	union {
 		struct {
 			struct ieee80211_tx_control *control;
-			struct ieee80211_hw_mode *mode;
+			struct ieee80211_channel *channel;
 			struct ieee80211_rate *rate;
 			/* use this rate (if set) for last fragment; rate can
 			 * be set to lower rate for the first fragments, e.g.,
 			 * when using CTS protection with IEEE 802.11g. */
 			struct ieee80211_rate *last_frag_rate;
-			int last_frag_hwrate;
 
 			/* Extra fragments (in addition to the first fragment
 			 * in skb) */
@@ -151,6 +149,7 @@ struct ieee80211_txrx_data {
 		} tx;
 		struct {
 			struct ieee80211_rx_status *status;
+			struct ieee80211_rate *rate;
 			int sent_ps_buffered;
 			int queue;
 			int load;
@@ -179,8 +178,6 @@ struct ieee80211_tx_stored_packet {
 	struct sk_buff *skb;
 	int num_extra_frag;
 	struct sk_buff **extra_frag;
-	int last_frag_rateidx;
-	int last_frag_hwrate;
 	struct ieee80211_rate *last_frag_rate;
 	unsigned int last_frag_rate_ctrl_probe;
 };
@@ -283,7 +280,7 @@ struct ieee80211_if_sta {
 
 	unsigned long ibss_join_req;
 	struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
-	u32 supp_rates_bits;
+	u32 supp_rates_bits[IEEE80211_NUM_BANDS];
 
 	int wmm_last_param_set;
 };
@@ -293,6 +290,7 @@ struct ieee80211_if_sta {
 #define IEEE80211_SDATA_ALLMULTI	BIT(0)
 #define IEEE80211_SDATA_PROMISC		BIT(1)
 #define IEEE80211_SDATA_USERSPACE_MLME	BIT(2)
+#define IEEE80211_SDATA_OPERATING_GMODE	BIT(3)
 struct ieee80211_sub_if_data {
 	struct list_head list;
 
@@ -313,6 +311,11 @@ struct ieee80211_sub_if_data {
 	 */
 	int ieee802_1x_pac;
 
+	/*
+	 * basic rates of this AP or the AP we're associated to
+	 */
+	u64 basic_rates;
+
 	u16 sequence;
 
 	/* Fragment table for host-based reassembly */
@@ -420,9 +423,6 @@ struct ieee80211_local {
 
 	const struct ieee80211_ops *ops;
 
-	/* List of registered struct ieee80211_hw_mode */
-	struct list_head modes_list;
-
 	struct net_device *mdev; /* wmaster# - "master" 802.11 device */
 	int open_count;
 	int monitors;
@@ -462,11 +462,6 @@ struct ieee80211_local {
 
 	struct rate_control_ref *rate_ctrl;
 
-	/* Supported and basic rate filters for different modes. These are
-	 * pointers to -1 terminated lists and rates in 100 kbps units. */
-	int *supp_rates[NUM_IEEE80211_MODES];
-	int *basic_rates[NUM_IEEE80211_MODES];
-
 	int rts_threshold;
 	int fragmentation_threshold;
 	int short_retry_limit; /* dot11ShortRetryLimit */
@@ -488,12 +483,13 @@ struct ieee80211_local {
 	bool sta_sw_scanning;
 	bool sta_hw_scanning;
 	int scan_channel_idx;
+	enum ieee80211_band scan_band;
+
 	enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
 	unsigned long last_scan_completed;
 	struct delayed_work scan_work;
 	struct net_device *scan_dev;
 	struct ieee80211_channel *oper_channel, *scan_channel;
-	struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode;
 	u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
 	size_t scan_ssid_len;
 	struct list_head sta_bss_list;
@@ -562,14 +558,8 @@ struct ieee80211_local {
 	int wifi_wme_noack_test;
 	unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 
-	unsigned int enabled_modes; /* bitfield of allowed modes;
-				      * (1 << MODE_*) */
-	unsigned int hw_modes; /* bitfield of supported hardware modes;
-				* (1 << MODE_*) */
-
 #ifdef CONFIG_MAC80211_DEBUGFS
 	struct local_debugfsdentries {
-		struct dentry *channel;
 		struct dentry *frequency;
 		struct dentry *antenna_sel_tx;
 		struct dentry *antenna_sel_rx;
@@ -579,9 +569,7 @@ struct ieee80211_local {
 		struct dentry *short_retry_limit;
 		struct dentry *long_retry_limit;
 		struct dentry *total_ps_buffered;
-		struct dentry *mode;
 		struct dentry *wep_iv;
-		struct dentry *modes;
 		struct dentry *statistics;
 		struct local_debugfsdentries_statsdentries {
 			struct dentry *transmitted_fragment_count;
@@ -692,23 +680,6 @@ static inline void bss_tim_clear(struct ieee80211_local *local,
 	read_unlock_bh(&local->sta_lock);
 }
 
-/**
- * ieee80211_is_erp_rate - Check if a rate is an ERP rate
- * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
- * @rate: Transmission rate to check, in 100 kbps
- *
- * Check if a given rate is an Extended Rate PHY (ERP) rate.
- */
-static inline int ieee80211_is_erp_rate(int phymode, int rate)
-{
-	if (phymode == MODE_IEEE80211G) {
-		if (rate != 10 && rate != 20 &&
-		    rate != 55 && rate != 110)
-			return 1;
-	}
-	return 0;
-}
-
 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
 {
 	return compare_ether_addr(raddr, addr) == 0 ||
@@ -720,13 +691,9 @@ static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
 int ieee80211_hw_config(struct ieee80211_local *local);
 int ieee80211_if_config(struct net_device *dev);
 int ieee80211_if_config_beacon(struct net_device *dev);
-void ieee80211_prepare_rates(struct ieee80211_local *local,
-			     struct ieee80211_hw_mode *mode);
 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
 void ieee80211_if_setup(struct net_device *dev);
-struct ieee80211_rate *ieee80211_get_rate(struct ieee80211_local *local,
-					  int phymode, int hwrate);
 int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht,
 			   struct ieee80211_ht_info *req_ht_cap,
 			   struct ieee80211_ht_bss_info *req_bss_cap);
@@ -757,7 +724,7 @@ extern const struct iw_handler_def ieee80211_iw_handler_def;
 /* ieee80211_ioctl.c */
 int ieee80211_set_compression(struct ieee80211_local *local,
 			      struct net_device *dev, struct sta_info *sta);
-int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq);
+int ieee80211_set_freq(struct ieee80211_local *local, int freq);
 /* ieee80211_sta.c */
 void ieee80211_sta_timer(unsigned long data);
 void ieee80211_sta_work(struct work_struct *work);
@@ -810,10 +777,6 @@ int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
 void ieee80211_if_free(struct net_device *dev);
 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
 
-/* regdomain.c */
-void ieee80211_regdomain_init(void);
-void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode);
-
 /* rx handling */
 extern ieee80211_rx_handler ieee80211_rx_handlers[];