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[PATCH] bcm43xx: improved statistics

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This minor patch for wireless-2.6 (softmac) adjusts the parameters of
the wireless statistics to improve the display of programs such as the
"Wireless Network Information" applet of KDE. Thanks to Dan Williams
and Jean Tourrilhes for valuable help in setting up the return of
info in dBm.

Signed-Off-By: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger 2006-07-14 15:42:17 -05:00 committed by John W. Linville
parent 58e5528ee4
commit 27be44ff8e
2 changed files with 17 additions and 16 deletions
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28
drivers/net/wireless/bcm43xx/bcm43xx_wx.c
View file

@ -47,9 +47,8 @@
#define BCM43xx_WX_VERSION 18
#define MAX_WX_STRING 80
/* FIXME: the next line is a guess as to what the maximum value of RX power
(in dBm) might be */
#define RX_POWER_MAX -10
/* FIXME: the next line is a guess as to what the maximum RSSI value might be */
#define RX_RSSI_MAX 60
static int bcm43xx_wx_get_name(struct net_device *net_dev,
@ -230,9 +229,8 @@ static int bcm43xx_wx_get_rangeparams(struct net_device *net_dev,
range->throughput = 27 * 1000 * 1000;
range->max_qual.qual = 100;
/* TODO: Real max RSSI */
range->max_qual.level = 0;
range->max_qual.noise = 0;
range->max_qual.level = 152; /* set floor at -104 dBm (152 - 256) */
range->max_qual.noise = 152;
range->max_qual.updated = IW_QUAL_ALL_UPDATED;
range->avg_qual.qual = 50;
@ -845,6 +843,7 @@ static struct iw_statistics *bcm43xx_get_wireless_stats(struct net_device *net_d
struct iw_statistics *wstats;
struct ieee80211_network *network = NULL;
static int tmp_level = 0;
static int tmp_qual = 0;
unsigned long flags;
wstats = &bcm->stats.wstats;
@ -863,25 +862,28 @@ static struct iw_statistics *bcm43xx_get_wireless_stats(struct net_device *net_d
wstats->qual.level = 0;
wstats->qual.noise = 0;
wstats->qual.updated = 7;
wstats->qual.updated |= IW_QUAL_ALL_UPDATED;
wstats->qual.updated |= IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
return wstats;
}
/* fill in the real statistics when iface associated */
spin_lock_irqsave(&mac->ieee->lock, flags);
list_for_each_entry(network, &mac->ieee->network_list, list) {
if (!memcmp(mac->associnfo.bssid, network->bssid, ETH_ALEN)) {
if (!tmp_level) /* get initial value */
tmp_level = network->stats.rssi;
else /* smooth results */
tmp_level = (7 * tmp_level + network->stats.rssi)/8;
if (!tmp_level) { /* get initial values */
tmp_level = network->stats.signal;
tmp_qual = network->stats.rssi;
} else { /* smooth results */
tmp_level = (15 * tmp_level + network->stats.signal)/16;
tmp_qual = (15 * tmp_qual + network->stats.rssi)/16;
}
break;
}
}
spin_unlock_irqrestore(&mac->ieee->lock, flags);
wstats->qual.level = tmp_level;
wstats->qual.qual = 100 + tmp_level - RX_POWER_MAX; // TODO: get the real signal quality
wstats->qual.qual = 100 * tmp_qual / RX_RSSI_MAX;
wstats->qual.noise = bcm->stats.noise;
wstats->qual.updated = IW_QUAL_ALL_UPDATED;
wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
wstats->discard.code = bcm->ieee->ieee_stats.rx_discards_undecryptable;
wstats->discard.retries = bcm->ieee->ieee_stats.tx_retry_limit_exceeded;
wstats->discard.nwid = bcm->ieee->ieee_stats.tx_discards_wrong_sa;

5
drivers/net/wireless/bcm43xx/bcm43xx_xmit.c
View file

@ -492,16 +492,15 @@ int bcm43xx_rx(struct bcm43xx_private *bcm,
memset(&stats, 0, sizeof(stats));
stats.mac_time = le16_to_cpu(rxhdr->mactime);
stats.rssi = bcm43xx_rssi_postprocess(bcm, rxhdr->rssi, is_ofdm,
stats.rssi = rxhdr->rssi;
stats.signal = bcm43xx_rssi_postprocess(bcm, rxhdr->rssi, is_ofdm,
!!(rxflags1 & BCM43xx_RXHDR_FLAGS1_2053RSSIADJ),
!!(rxflags3 & BCM43xx_RXHDR_FLAGS3_2050RSSIADJ));
stats.signal = rxhdr->signal_quality; //FIXME
//TODO stats.noise =
if (is_ofdm)
stats.rate = bcm43xx_plcp_get_bitrate_ofdm(plcp);
else
stats.rate = bcm43xx_plcp_get_bitrate_cck(plcp);
//printk("RX ofdm %d, rate == %u\n", is_ofdm, stats.rate);
stats.received_channel = radio->channel;
//TODO stats.control =
stats.mask = IEEE80211_STATMASK_SIGNAL |