mac80211: correct use_short_preamble handling
ERP IE bit for preamble mode is 0 for short and 1 for long, not the other
way around. This fixes the value reported to the driver via
bss_conf->use_short_preamble field.
Signed-off-by: Vladimir Koutny <vlado@ksp.sk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index 9aeed53..e0c72d0 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -319,7 +319,7 @@
struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0;
- bool preamble_mode = (erp_value & WLAN_ERP_BARKER_PREAMBLE) != 0;
+ bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0;
DECLARE_MAC_BUF(mac);
u32 changed = 0;
@@ -335,16 +335,15 @@
changed |= BSS_CHANGED_ERP_CTS_PROT;
}
- if (preamble_mode != bss_conf->use_short_preamble) {
+ if (use_short_preamble != bss_conf->use_short_preamble) {
if (net_ratelimit()) {
printk(KERN_DEBUG "%s: switched to %s barker preamble"
" (BSSID=%s)\n",
sdata->dev->name,
- (preamble_mode == WLAN_ERP_PREAMBLE_SHORT) ?
- "short" : "long",
+ use_short_preamble ? "short" : "long",
print_mac(mac, ifsta->bssid));
}
- bss_conf->use_short_preamble = preamble_mode;
+ bss_conf->use_short_preamble = use_short_preamble;
changed |= BSS_CHANGED_ERP_PREAMBLE;
}