diff mbox series

[11/22] cfg80211: parse S1G Operation element for BSS channel

Message ID 20200827223304.16155-12-thomas@adapt-ip.com (mailing list archive)
State Superseded
Delegated to: Johannes Berg
Headers show
Series add initial S1G support | expand

Commit Message

Thomas Pedersen Aug. 27, 2020, 10:32 p.m. UTC 
Extract the BSS primary channel from the S1G Operation
element.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 net/wireless/scan.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index bf72a13dd2aa..169b6904e011 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -1318,15 +1318,26 @@  cfg80211_get_bss_channel(struct wiphy *wiphy, const u8 *ie, size_t ielen,
 	tmp = cfg80211_find_ie(WLAN_EID_DS_PARAMS, ie, ielen);
 	if (tmp && tmp[1] == 1) {
 		channel_number = tmp[2];
-	} else {
-		tmp = cfg80211_find_ie(WLAN_EID_HT_OPERATION, ie, ielen);
-		if (tmp && tmp[1] >= sizeof(struct ieee80211_ht_operation)) {
-			struct ieee80211_ht_operation *htop = (void *)(tmp + 2);
+		goto found_channel;
+	}
 
-			channel_number = htop->primary_chan;
-		}
+	tmp = cfg80211_find_ie(WLAN_EID_HT_OPERATION, ie, ielen);
+	if (tmp && tmp[1] >= sizeof(struct ieee80211_ht_operation)) {
+		struct ieee80211_ht_operation *htop = (void *)(tmp + 2);
+
+		channel_number = htop->primary_chan;
+		goto found_channel;
+	}
+
+	tmp = cfg80211_find_ie(WLAN_EID_S1G_OPERATION, ie, ielen);
+	if (tmp && tmp[1] >= sizeof(struct ieee80211_s1g_oper_ie)) {
+		struct ieee80211_s1g_oper_ie *s1gop = (void *)(tmp + 2);
+
+		channel_number = s1gop->primary_ch;
+		goto found_channel;
 	}
 
+found_channel:
 	if (channel_number < 0) {
 		/* No channel information in frame payload */
 		return channel;