[PATCH] ieee80211 Added wireless spy support

Added wireless spy support to Rx code path.
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>

NOTE:  Looks like scripts/Lindent generated output different
than the Lindented version already in-kernel, hence all the
whitespace deltas...  *sigh*
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

include/net/ieee80211.h

@@ -33,7 +33,6 @@
    represents the 2304 bytes of real data, plus a possible 8 bytes of
    WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
 
-
 #define IEEE80211_HLEN			30
 #define IEEE80211_FRAME_LEN		(IEEE80211_DATA_LEN + IEEE80211_HLEN)
 
@@ -117,7 +116,6 @@ struct ieee80211_hdr_3addr {
 #define IEEE80211_SCTL_FRAG		0x000F
 #define IEEE80211_SCTL_SEQ		0xFFF0
 
-
 /* debug macros */
 
 #ifdef CONFIG_IEEE80211_DEBUG
@@ -130,7 +128,6 @@ do { if (ieee80211_debug_level & (level)) \
 #define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
 #endif				/* CONFIG_IEEE80211_DEBUG */
 
-
 /* debug macros not dependent on CONFIG_IEEE80211_DEBUG */
 
 #define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
@@ -140,7 +137,6 @@ do { if (ieee80211_debug_level & (level)) \
  * messages. It should never be used for passing essid to user space. */
 const char *escape_essid(const char *essid, u8 essid_len);
 
-
 /*
  * To use the debug system:
  *
@@ -312,14 +308,12 @@ enum ieee80211_reasoncode {
 	WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
 };
 
-
 #define IEEE80211_STATMASK_SIGNAL (1<<0)
 #define IEEE80211_STATMASK_RSSI (1<<1)
 #define IEEE80211_STATMASK_NOISE (1<<2)
 #define IEEE80211_STATMASK_RATE (1<<3)
 #define IEEE80211_STATMASK_WEMASK 0x7
 
-
 #define IEEE80211_CCK_MODULATION    (1<<0)
 #define IEEE80211_OFDM_MODULATION   (1<<1)
 
@@ -377,9 +371,6 @@ enum ieee80211_reasoncode {
 #define IEEE80211_NUM_CCK_RATES	            4
 #define IEEE80211_OFDM_SHIFT_MASK_A         4
 
-
-
-
 /* NOTE: This data is for statistical purposes; not all hardware provides this
  *       information for frames received.  Not setting these will not cause
  *       any adverse affects. */
@@ -460,17 +451,13 @@ struct ieee80211_device;
 
 struct ieee80211_security {
 	u16 active_key:2,
-            enabled:1,
-	    auth_mode:2,
-            auth_algo:4,
-            unicast_uses_group:1;
+	    enabled:1, auth_mode:2, auth_algo:4, unicast_uses_group:1;
 	u8 key_sizes[WEP_KEYS];
 	u8 keys[WEP_KEYS][WEP_KEY_LEN];
 	u8 level;
 	u16 flags;
 } __attribute__ ((packed));
 
-
 /*
 
  802.11 data frame from AP
@@ -554,7 +541,6 @@ struct ieee80211_authentication {
 	struct ieee80211_info_element info_element;
 } __attribute__ ((packed));
 
-
 struct ieee80211_probe_response {
 	struct ieee80211_hdr_3addr header;
 	u32 time_stamp[2];
@@ -578,7 +564,6 @@ struct ieee80211_assoc_response_frame {
 	struct ieee80211_info_element info_element;	/* supported rates */
 } __attribute__ ((packed));
 
-
 struct ieee80211_txb {
 	u8 nr_frags;
 	u8 encrypted;
@@ -588,7 +573,6 @@ struct ieee80211_txb {
 	struct sk_buff *fragments[0];
 };
 
-
 /* SWEEP TABLE ENTRIES NUMBER */
 #define MAX_SWEEP_TAB_ENTRIES		  42
 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET  7
@@ -651,7 +635,6 @@ enum ieee80211_state {
 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
 #define DEFAULT_FTS 2346
 
-
 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
 
@@ -670,6 +653,7 @@ struct ieee80211_device {
 	int scan_age;
 
 	int iw_mode;		/* operating mode (IW_MODE_*) */
+	struct iw_spy_data spy_data;	/* iwspy support */
 
 	spinlock_t lock;
 
@@ -723,11 +707,11 @@ struct ieee80211_device {
 	int worst_rssi;
 
 	/* Callback functions */
-	void (*set_security)(struct net_device *dev,
-			     struct ieee80211_security *sec);
-	int (*hard_start_xmit)(struct ieee80211_txb *txb,
-			       struct net_device *dev);
-	int (*reset_port)(struct net_device *dev);
+	void (*set_security) (struct net_device * dev,
+			      struct ieee80211_security * sec);
+	int (*hard_start_xmit) (struct ieee80211_txb * txb,
+				struct net_device * dev);
+	int (*reset_port) (struct net_device * dev);
 
 	/* This must be the last item so that it points to the data
 	 * allocated beyond this structure by alloc_ieee80211 */
@@ -760,7 +744,8 @@ extern inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
 	return 1;
 }
 
-extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee, int mode)
+extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
+					  int mode)
 {
 	/*
 	 * It is possible for both access points and our device to support
@@ -811,8 +796,6 @@ extern inline int ieee80211_get_hdrlen(u16 fc)
 	return hdrlen;
 }
 
-
-
 /* ieee80211.c */
 extern void free_ieee80211(struct net_device *dev);
 extern struct net_device *alloc_ieee80211(int sizeof_priv);
@@ -820,11 +803,9 @@ extern struct net_device *alloc_ieee80211(int sizeof_priv);
 extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
 
 /* ieee80211_tx.c */
-extern int ieee80211_xmit(struct sk_buff *skb,
-			  struct net_device *dev);
+extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
 extern void ieee80211_txb_free(struct ieee80211_txb *);
 
-
 /* ieee80211_rx.c */
 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 			struct ieee80211_rx_stats *rx_stats);
@@ -843,7 +824,6 @@ extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
 				   struct iw_request_info *info,
 				   union iwreq_data *wrqu, char *key);
 
-
 extern inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
 {
 	ieee->scans++;
@@ -854,5 +834,4 @@ extern inline int ieee80211_get_scans(struct ieee80211_device *ieee)
 	return ieee->scans;
 }
 
-
 #endif				/* IEEE80211_H */

include/net/ieee80211_crypt.h

@@ -31,10 +31,10 @@ struct ieee80211_crypto_ops {
 	/* init new crypto context (e.g., allocate private data space,
 	 * select IV, etc.); returns NULL on failure or pointer to allocated
 	 * private data on success */
-	void * (*init)(int keyidx);
+	void *(*init) (int keyidx);
 
 	/* deinitialize crypto context and free allocated private data */
-	void (*deinit)(void *priv);
+	void (*deinit) (void *priv);
 
 	/* encrypt/decrypt return < 0 on error or >= 0 on success. The return
 	 * value from decrypt_mpdu is passed as the keyidx value for
@@ -42,21 +42,21 @@ struct ieee80211_crypto_ops {
 	 * encryption; if not, error will be returned; these functions are
 	 * called for all MPDUs (i.e., fragments).
 	 */
-	int (*encrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);
-	int (*decrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);
+	int (*encrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
+	int (*decrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
 
 	/* These functions are called for full MSDUs, i.e. full frames.
 	 * These can be NULL if full MSDU operations are not needed. */
-	int (*encrypt_msdu)(struct sk_buff *skb, int hdr_len, void *priv);
-	int (*decrypt_msdu)(struct sk_buff *skb, int keyidx, int hdr_len,
+	int (*encrypt_msdu) (struct sk_buff * skb, int hdr_len, void *priv);
+	int (*decrypt_msdu) (struct sk_buff * skb, int keyidx, int hdr_len,
 			     void *priv);
 
-	int (*set_key)(void *key, int len, u8 *seq, void *priv);
-	int (*get_key)(void *key, int len, u8 *seq, void *priv);
+	int (*set_key) (void *key, int len, u8 * seq, void *priv);
+	int (*get_key) (void *key, int len, u8 * seq, void *priv);
 
 	/* procfs handler for printing out key information and possible
 	 * statistics */
-	char * (*print_stats)(char *p, void *priv);
+	char *(*print_stats) (char *p, void *priv);
 
 	/* maximum number of bytes added by encryption; encrypt buf is
 	 * allocated with extra_prefix_len bytes, copy of in_buf, and
@@ -77,7 +77,7 @@ struct ieee80211_crypt_data {
 
 int ieee80211_register_crypto_ops(struct ieee80211_crypto_ops *ops);
 int ieee80211_unregister_crypto_ops(struct ieee80211_crypto_ops *ops);
-struct ieee80211_crypto_ops * ieee80211_get_crypto_ops(const char *name);
+struct ieee80211_crypto_ops *ieee80211_get_crypto_ops(const char *name);
 void ieee80211_crypt_deinit_entries(struct ieee80211_device *, int);
 void ieee80211_crypt_deinit_handler(unsigned long);
 void ieee80211_crypt_delayed_deinit(struct ieee80211_device *ieee,

net/ieee80211/ieee80211_rx.c

@@ -378,33 +378,47 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 	frag = WLAN_GET_SEQ_FRAG(sc);
 	hdrlen = ieee80211_get_hdrlen(fc);
 
-#ifdef NOT_YET
-#if WIRELESS_EXT > 15
 	/* Put this code here so that we avoid duplicating it in all
 	 * Rx paths. - Jean II */
 #ifdef IW_WIRELESS_SPY		/* defined in iw_handler.h */
 	/* If spy monitoring on */
-	if (iface->spy_data.spy_number > 0) {
+	if (ieee->spy_data.spy_number > 0) {
 		struct iw_quality wstats;
-		wstats.level = rx_stats->signal;
+
+		wstats.updated = 0;
+		if (rx_stats->mask & IEEE80211_STATMASK_RSSI) {
+			wstats.level = rx_stats->rssi;
+			wstats.updated |= IW_QUAL_LEVEL_UPDATED;
+		} else
+			wstats.updated |= IW_QUAL_LEVEL_INVALID;
+
+		if (rx_stats->mask & IEEE80211_STATMASK_NOISE) {
 			wstats.noise = rx_stats->noise;
-		wstats.updated = 6;	/* No qual value */
+			wstats.updated |= IW_QUAL_NOISE_UPDATED;
+		} else
+			wstats.updated |= IW_QUAL_NOISE_INVALID;
+
+		if (rx_stats->mask & IEEE80211_STATMASK_SIGNAL) {
+			wstats.qual = rx_stats->signal;
+			wstats.updated |= IW_QUAL_QUAL_UPDATED;
+		} else
+			wstats.updated |= IW_QUAL_QUAL_INVALID;
+
 		/* Update spy records */
-		wireless_spy_update(dev, hdr->addr2, &wstats);
+		wireless_spy_update(ieee->dev, hdr->addr2, &wstats);
 	}
 #endif				/* IW_WIRELESS_SPY */
-#endif				/* WIRELESS_EXT > 15 */
+
+#ifdef NOT_YET
 	hostap_update_rx_stats(local->ap, hdr, rx_stats);
 #endif
 
-#if WIRELESS_EXT > 15
 	if (ieee->iw_mode == IW_MODE_MONITOR) {
 		ieee80211_monitor_rx(ieee, skb, rx_stats);
 		stats->rx_packets++;
 		stats->rx_bytes += skb->len;
 		return 1;
 	}
-#endif
 
 	if (ieee->host_decrypt) {
 		int idx = 0;
@@ -771,8 +785,7 @@ static inline int ieee80211_is_ofdm_rate(u8 rate)
 	return 0;
 }
 
-static inline int ieee80211_network_init(struct ieee80211_device *ieee,
-					 struct ieee80211_probe_response
+static inline int ieee80211_network_init(struct ieee80211_device *ieee, struct ieee80211_probe_response
 					 *beacon,
 					 struct ieee80211_network *network,
 					 struct ieee80211_rx_stats *stats)
@@ -1028,11 +1041,9 @@ static inline void update_network(struct ieee80211_network *dst,
 }
 
 static inline void ieee80211_process_probe_response(struct ieee80211_device
-						    *ieee,
-						    struct
+						    *ieee, struct
 						    ieee80211_probe_response
-						    *beacon,
-						    struct ieee80211_rx_stats
+						    *beacon, struct ieee80211_rx_stats
 						    *stats)
 {
 	struct ieee80211_network network;