[PATCH] wireless/airo: WEXT and quality corrections
[linux-3.10.git] / drivers / net / wireless / airo.c
index 463c789cdc77c5e9705e656277050a47b76523ee..fb10a2db63ad018623c2781be4da42db970cf434 100644 (file)
@@ -754,7 +754,7 @@ typedef struct {
   u8 zero;
   u8 ssidLen;
   u8 ssid[32];
-  u16 rssi;
+  u16 dBm;
 #define CAP_ESS (1<<0)
 #define CAP_IBSS (1<<1)
 #define CAP_PRIVACY (1<<4)
@@ -1125,6 +1125,9 @@ static int micsetup(struct airo_info *ai);
 static int encapsulate(struct airo_info *ai, etherHead *pPacket, MICBuffer *buffer, int len);
 static int decapsulate(struct airo_info *ai, MICBuffer *mic, etherHead *pPacket, u16 payLen);
 
+static u8 airo_rssi_to_dbm (tdsRssiEntry *rssi_rid, u8 rssi);
+static u8 airo_dbm_to_pct (tdsRssiEntry *rssi_rid, u8 dbm);
+
 #include <linux/crypto.h>
 #endif
 
@@ -1713,6 +1716,7 @@ static int readBSSListRid(struct airo_info *ai, int first,
        list->fh.dwell = le16_to_cpu(list->fh.dwell);
        list->dsChannel = le16_to_cpu(list->dsChannel);
        list->atimWindow = le16_to_cpu(list->atimWindow);
+       list->dBm = le16_to_cpu(list->dBm);
        return rc;
 }
 
@@ -3245,7 +3249,10 @@ badrx:
                                        wstats.level = 0x100 - apriv->rssi[hdr.rssi[1]].rssidBm;
                                else
                                        wstats.level = (hdr.rssi[1] + 321) / 2;
-                               wstats.updated = 3;     
+                               wstats.noise = apriv->wstats.qual.noise;
+                               wstats.updated = IW_QUAL_LEVEL_UPDATED
+                                       | IW_QUAL_QUAL_UPDATED
+                                       | IW_QUAL_NOISE_UPDATED;
                                /* Update spy records */
                                wireless_spy_update(dev, sa, &wstats);
                        }
@@ -3588,7 +3595,10 @@ void mpi_receive_802_11 (struct airo_info *ai)
                        wstats.level = 0x100 - ai->rssi[hdr.rssi[1]].rssidBm;
                else
                        wstats.level = (hdr.rssi[1] + 321) / 2;
-               wstats.updated = 3;
+               wstats.noise = ai->wstats.qual.noise;
+               wstats.updated = IW_QUAL_QUAL_UPDATED
+                       | IW_QUAL_LEVEL_UPDATED
+                       | IW_QUAL_NOISE_UPDATED;
                /* Update spy records */
                wireless_spy_update(ai->dev, sa, &wstats);
        }
@@ -3679,7 +3689,7 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock)
                status = PC4500_readrid(ai,RID_RSSI,&rssi_rid,sizeof(rssi_rid),lock);
                if ( status == SUCCESS ) {
                        if (ai->rssi || (ai->rssi = kmalloc(512, GFP_KERNEL)) != NULL)
-                               memcpy(ai->rssi, (u8*)&rssi_rid + 2, 512);
+                               memcpy(ai->rssi, (u8*)&rssi_rid + 2, 512); /* Skip RID length member */
                }
                else {
                        if (ai->rssi) {
@@ -5348,7 +5358,7 @@ static int proc_BSSList_open( struct inode *inode, struct file *file ) {
                                (int)BSSList_rid.bssid[5],
                                (int)BSSList_rid.ssidLen,
                                BSSList_rid.ssid,
-                               (int)BSSList_rid.rssi);
+                               (int)BSSList_rid.dBm);
                ptr += sprintf(ptr, " channel = %d %s %s %s %s\n",
                                (int)BSSList_rid.dsChannel,
                                BSSList_rid.cap & CAP_ESS ? "ESS" : "",
@@ -5593,6 +5603,29 @@ static void __exit airo_cleanup_module( void )
  * would not work at all... - Jean II
  */
 
+static u8 airo_rssi_to_dbm (tdsRssiEntry *rssi_rid, u8 rssi)
+{
+       if( !rssi_rid )
+               return 0;
+
+       return (0x100 - rssi_rid[rssi].rssidBm);
+}
+
+static u8 airo_dbm_to_pct (tdsRssiEntry *rssi_rid, u8 dbm)
+{
+       int i;
+
+       if( !rssi_rid )
+               return 0;
+
+       for( i = 0; i < 256; i++ )
+               if (rssi_rid[i].rssidBm == dbm)
+                       return rssi_rid[i].rssipct;
+
+       return 0;
+}
+
+
 static int airo_get_quality (StatusRid *status_rid, CapabilityRid *cap_rid)
 {
        int quality = 0;
@@ -6443,11 +6476,29 @@ static int airo_get_range(struct net_device *dev,
        }
        range->num_frequency = k;
 
+       range->sensitivity = 65535;
+
        /* Hum... Should put the right values there */
-       range->max_qual.qual = airo_get_max_quality(&cap_rid);
-       range->max_qual.level = 0x100 - 120;    /* -120 dBm */
+       if (local->rssi)
+               range->max_qual.qual = 100;     /* % */
+       else
+               range->max_qual.qual = airo_get_max_quality(&cap_rid);
+       range->max_qual.level = 0;      /* 0 means we use dBm  */
        range->max_qual.noise = 0;
-       range->sensitivity = 65535;
+       range->max_qual.updated = 0;
+
+       /* Experimental measurements - boundary 11/5.5 Mb/s */
+       /* Note : with or without the (local->rssi), results
+        * are somewhat different. - Jean II */
+       if (local->rssi) {
+               range->avg_qual.qual = 50;      /* % */
+               range->avg_qual.level = 186;    /* -70 dBm */
+       } else {
+               range->avg_qual.qual = airo_get_avg_quality(&cap_rid);
+               range->avg_qual.level = 176;    /* -80 dBm */
+       }
+       range->avg_qual.noise = 0;
+       range->avg_qual.updated = 0;
 
        for(i = 0 ; i < 8 ; i++) {
                range->bitrate[i] = cap_rid.supportedRates[i] * 500000;
@@ -6508,15 +6559,6 @@ static int airo_get_range(struct net_device *dev,
        range->max_retry = 65535;
        range->min_r_time = 1024;
        range->max_r_time = 65535 * 1024;
-       /* Experimental measurements - boundary 11/5.5 Mb/s */
-       /* Note : with or without the (local->rssi), results
-        * are somewhat different. - Jean II */
-       range->avg_qual.qual = airo_get_avg_quality(&cap_rid);
-       if (local->rssi)
-               range->avg_qual.level = 186;    /* -70 dBm */
-       else
-               range->avg_qual.level = 176;    /* -80 dBm */
-       range->avg_qual.noise = 0;
 
        /* Event capability (kernel + driver) */
        range->event_capa[0] = (IW_EVENT_CAPA_K_0 |
@@ -6676,12 +6718,18 @@ static int airo_get_aplist(struct net_device *dev,
                loseSync = 0;
                memcpy(address[i].sa_data, BSSList.bssid, ETH_ALEN);
                address[i].sa_family = ARPHRD_ETHER;
-               if (local->rssi)
-                       qual[i].level = 0x100 - local->rssi[BSSList.rssi].rssidBm;
-               else
-                       qual[i].level = (BSSList.rssi + 321) / 2;
-               qual[i].qual = qual[i].noise = 0;
-               qual[i].updated = 2;
+               if (local->rssi) {
+                       qual[i].level = 0x100 - BSSList.dBm;
+                       qual[i].qual = airo_dbm_to_pct( local->rssi, BSSList.dBm );
+                       qual[i].updated = IW_QUAL_QUAL_UPDATED;
+               } else {
+                       qual[i].level = (BSSList.dBm + 321) / 2;
+                       qual[i].qual = 0;
+                       qual[i].updated = IW_QUAL_QUAL_INVALID;
+               }
+               qual[i].noise = local->wstats.qual.noise;
+               qual[i].updated = IW_QUAL_LEVEL_UPDATED
+                               | IW_QUAL_NOISE_UPDATED;
                if (BSSList.index == 0xffff)
                        break;
        }
@@ -6760,7 +6808,7 @@ static int airo_set_scan(struct net_device *dev,
 static inline char *airo_translate_scan(struct net_device *dev,
                                        char *current_ev,
                                        char *end_buf,
-                                       BSSListRid *list)
+                                       BSSListRid *bss)
 {
        struct airo_info *ai = dev->priv;
        struct iw_event         iwe;            /* Temporary buffer */
@@ -6771,22 +6819,22 @@ static inline char *airo_translate_scan(struct net_device *dev,
        /* First entry *MUST* be the AP MAC address */
        iwe.cmd = SIOCGIWAP;
        iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
-       memcpy(iwe.u.ap_addr.sa_data, list->bssid, ETH_ALEN);
+       memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN);
        current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_ADDR_LEN);
 
        /* Other entries will be displayed in the order we give them */
 
        /* Add the ESSID */
-       iwe.u.data.length = list->ssidLen;
+       iwe.u.data.length = bss->ssidLen;
        if(iwe.u.data.length > 32)
                iwe.u.data.length = 32;
        iwe.cmd = SIOCGIWESSID;
        iwe.u.data.flags = 1;
-       current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, list->ssid);
+       current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss->ssid);
 
        /* Add mode */
        iwe.cmd = SIOCGIWMODE;
-       capabilities = le16_to_cpu(list->cap);
+       capabilities = le16_to_cpu(bss->cap);
        if(capabilities & (CAP_ESS | CAP_IBSS)) {
                if(capabilities & CAP_ESS)
                        iwe.u.mode = IW_MODE_MASTER;
@@ -6797,19 +6845,25 @@ static inline char *airo_translate_scan(struct net_device *dev,
 
        /* Add frequency */
        iwe.cmd = SIOCGIWFREQ;
-       iwe.u.freq.m = le16_to_cpu(list->dsChannel);
+       iwe.u.freq.m = le16_to_cpu(bss->dsChannel);
        iwe.u.freq.m = frequency_list[iwe.u.freq.m] * 100000;
        iwe.u.freq.e = 1;
        current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_FREQ_LEN);
 
        /* Add quality statistics */
        iwe.cmd = IWEVQUAL;
-       if (ai->rssi)
-               iwe.u.qual.level = 0x100 - ai->rssi[list->rssi].rssidBm;
-       else
-               iwe.u.qual.level = (list->rssi + 321) / 2;
-       iwe.u.qual.noise = 0;
-       iwe.u.qual.qual = 0;
+       if (ai->rssi) {
+               iwe.u.qual.level = 0x100 - bss->dBm;
+               iwe.u.qual.qual = airo_dbm_to_pct( ai->rssi, bss->dBm );
+               iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED;
+       } else {
+               iwe.u.qual.level = (bss->dBm + 321) / 2;
+               iwe.u.qual.qual = 0;
+               iwe.u.qual.updated = IW_QUAL_QUAL_INVALID;
+       }
+       iwe.u.qual.noise = ai->wstats.qual.noise;
+       iwe.u.qual.updated = IW_QUAL_LEVEL_UPDATED
+                       | IW_QUAL_NOISE_UPDATED;
        current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_QUAL_LEN);
 
        /* Add encryption capability */
@@ -6819,7 +6873,7 @@ static inline char *airo_translate_scan(struct net_device *dev,
        else
                iwe.u.data.flags = IW_ENCODE_DISABLED;
        iwe.u.data.length = 0;
-       current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, list->ssid);
+       current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss->ssid);
 
        /* Rate : stuffing multiple values in a single event require a bit
         * more of magic - Jean II */
@@ -6831,10 +6885,10 @@ static inline char *airo_translate_scan(struct net_device *dev,
        /* Max 8 values */
        for(i = 0 ; i < 8 ; i++) {
                /* NULL terminated */
-               if(list->rates[i] == 0)
+               if(bss->rates[i] == 0)
                        break;
                /* Bit rate given in 500 kb/s units (+ 0x80) */
-               iwe.u.bitrate.value = ((list->rates[i] & 0x7f) * 500000);
+               iwe.u.bitrate.value = ((bss->rates[i] & 0x7f) * 500000);
                /* Add new value to event */
                current_val = iwe_stream_add_value(current_ev, current_val, end_buf, &iwe, IW_EV_PARAM_LEN);
        }
@@ -7153,18 +7207,22 @@ static void airo_read_wireless_stats(struct airo_info *local)
        /* The status */
        local->wstats.status = status_rid.mode;
 
-       /* Signal quality and co. But where is the noise level ??? */
-       local->wstats.qual.qual = airo_get_quality(&status_rid, &cap_rid);
-       if (local->rssi)
-               local->wstats.qual.level = 0x100 - local->rssi[status_rid.sigQuality].rssidBm;
-       else
+       /* Signal quality and co */
+       if (local->rssi) {
+               local->wstats.qual.level = airo_rssi_to_dbm( local->rssi, status_rid.sigQuality );
+               /* normalizedSignalStrength appears to be a percentage */
+               local->wstats.qual.qual = status_rid.normalizedSignalStrength;
+       } else {
                local->wstats.qual.level = (status_rid.normalizedSignalStrength + 321) / 2;
+               local->wstats.qual.qual = airo_get_quality(&status_rid, &cap_rid);
+       }
+       local->wstats.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED;
        if (status_rid.len >= 124) {
-               local->wstats.qual.noise = 256 - status_rid.noisedBm;
-               local->wstats.qual.updated = 7;
+               local->wstats.qual.noise = 0x100 - status_rid.noisedBm;
+               local->wstats.qual.updated |= IW_QUAL_NOISE_UPDATED;
        } else {
                local->wstats.qual.noise = 0;
-               local->wstats.qual.updated = 3;
+               local->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
        }
 
        /* Packets discarded in the wireless adapter due to wireless