[PATCH] store rssi as an int
Don't store an (hardware base) u8 value in bss_descriptor, but just an
unsigned int (RSSI is really unsigned). Compilers generate more efficent
code for ints than for bytes.
Signed-off-by: Holger Schurig <hs4233@xxxxxxxxxxxxxxxxxxxx>
Index: wireless-testing/drivers/net/wireless/libertas/scan.h
===================================================================
--- wireless-testing.orig/drivers/net/wireless/libertas/scan.h 2008-03-19 09:04:43.000000000 +0100
+++ wireless-testing/drivers/net/wireless/libertas/scan.h 2008-03-19 09:05:53.000000000 +0100
@@ -34,14 +34,9 @@ struct bss_descriptor {
u8 ssid_len;
u16 capability;
-
- /* receive signal strength in dBm */
- long rssi;
-
+ u32 rssi;
u32 channel;
-
u16 beaconperiod;
-
u32 atimwindow;
/* IW_MODE_AUTO, IW_MODE_ADHOC, IW_MODE_INFRA */
Index: wireless-testing/drivers/net/wireless/libertas/scan.c
===================================================================
--- wireless-testing.orig/drivers/net/wireless/libertas/scan.c 2008-03-19 09:05:48.000000000 +0100
+++ wireless-testing/drivers/net/wireless/libertas/scan.c 2008-03-19 09:27:55.000000000 +0100
@@ -602,7 +602,7 @@ static int lbs_scan_networks(struct lbs_
lbs_deb_scan("scan table:\n");
list_for_each_entry(iter, &priv->network_list, list)
lbs_deb_scan("%02d: BSSID %s, RSSI %d, SSID '%s'\n",
- i++, print_mac(mac, iter->bssid), (int)iter->rssi,
+ i++, print_mac(mac, iter->bssid), iter->rssi,
escape_essid(iter->ssid, iter->ssid_len));
mutex_unlock(&priv->lock);
#endif
@@ -948,7 +948,7 @@ struct bss_descriptor *lbs_find_ssid_in_
uint8_t *bssid, uint8_t mode,
int channel)
{
- uint8_t bestrssi = 0;
+ u32 bestrssi = 0;
struct bss_descriptor * iter_bss = NULL;
struct bss_descriptor * found_bss = NULL;
struct bss_descriptor * tmp_oldest = NULL;
Index: wireless-testing/drivers/net/wireless/libertas/debugfs.c
===================================================================
--- wireless-testing.orig/drivers/net/wireless/libertas/debugfs.c 2008-03-19 09:04:43.000000000 +0100
+++ wireless-testing/drivers/net/wireless/libertas/debugfs.c 2008-03-19 09:05:53.000000000 +0100
@@ -78,7 +78,7 @@ static ssize_t lbs_getscantable(struct f
u16 spectrum_mgmt = (iter_bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT);
pos += snprintf(buf+pos, len-pos,
- "%02u| %03d | %04ld | %s |",
+ "%02u| %03d | %04d | %s |",
numscansdone, iter_bss->channel, iter_bss->rssi,
print_mac(mac, iter_bss->bssid));
pos += snprintf(buf+pos, len-pos, " %04x-", iter_bss->capability);
--
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