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41 lines
1.1 KiB
Diff
41 lines
1.1 KiB
Diff
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This patch fixes the detection of hidden SSIDs as transmitted
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by some cisco systems.
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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Index: madwifi-trunk-r3776/net80211/ieee80211_scan_sta.c
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===================================================================
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--- madwifi-trunk-r3776.orig/net80211/ieee80211_scan_sta.c 2008-07-17 03:10:02.000000000 +0200
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+++ madwifi-trunk-r3776/net80211/ieee80211_scan_sta.c 2008-07-17 04:02:41.000000000 +0200
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@@ -209,6 +209,19 @@
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ieee80211_saveie(iep, ie);
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}
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+
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+static inline int is_empty_ssid(u_int8_t *ssid)
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+{
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+ if (!ssid)
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+ return 1;
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+ if (ssid[1] == 0)
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+ return 1;
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+ if ((ssid[1] == 1) && (ssid[2] == 0))
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+ return 1;
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+ return 0;
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+}
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+
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+
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/*
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* Process a beacon or probe response frame; create an
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* entry in the scan cache or update any previous entry.
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@@ -252,8 +265,8 @@
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ise = &se->base;
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/* XXX ap beaconing multiple ssid w/ same bssid */
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- if (sp->ssid[1] != 0 &&
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- (ISPROBE(subtype) || ise->se_ssid[1] == 0))
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+ if (!is_empty_ssid(sp->ssid) &&
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+ (ISPROBE(subtype) || is_empty_ssid(ise->se_ssid)))
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memcpy(ise->se_ssid, sp->ssid, 2 + sp->ssid[1]);
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memcpy(ise->se_rates, sp->rates,
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