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From: Thomas Pedersen <thomas@adapt-ip.com>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless <linux-wireless@vger.kernel.org>,
	Thomas Pedersen <thomas@adapt-ip.com>
Subject: [PATCH 11/22] cfg80211: parse S1G Operation element for BSS channel
Date: Thu, 27 Aug 2020 15:32:53 -0700	[thread overview]
Message-ID: <20200827223304.16155-12-thomas@adapt-ip.com> (raw)
In-Reply-To: <20200827223304.16155-1-thomas@adapt-ip.com>

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 --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;
-- 
2.20.1


  parent reply	other threads:[~2020-08-27 22:33 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-27 22:32 [PATCH 00/22] add initial S1G support Thomas Pedersen
2020-08-27 22:32 ` [PATCH 01/22] nl80211: advertise supported channel width in S1G Thomas Pedersen
2020-08-27 22:32 ` [PATCH 02/22] cfg80211: regulatory: pass min. bandwidth to regulatory rule extractor Thomas Pedersen
2020-08-28  1:38   ` kernel test robot
2020-08-28  6:21   ` Thomas Pedersen
2020-08-27 22:32 ` [PATCH 03/22] cfg80211: regulatory: handle S1G channels Thomas Pedersen
2020-08-27 22:32 ` [PATCH 04/22] nl80211: correctly validate S1G beacon head Thomas Pedersen
2020-08-27 22:32 ` [PATCH 05/22] nl80211: support setting S1G channels Thomas Pedersen
2020-08-27 22:32 ` [PATCH 06/22] {cfg,mac}80211: get correct default channel width for S1G Thomas Pedersen
2020-08-27 22:32 ` [PATCH 07/22] mac80211: s1g: choose scanning width based on frequency Thomas Pedersen
2020-08-27 22:32 ` [PATCH 08/22] nl80211: support S1G capabilities Thomas Pedersen
2020-08-27 22:32 ` [PATCH 09/22] mac80211: support S1G STA capabilities Thomas Pedersen
2020-08-27 22:32 ` [PATCH 10/22] cfg80211: convert S1G beacon to scan results Thomas Pedersen
2020-08-27 22:32 ` Thomas Pedersen [this message]
2020-08-27 22:32 ` [PATCH 12/22] mac80211: " Thomas Pedersen
2020-08-27 22:32 ` [PATCH 13/22] cfg80211: handle Association Response from S1G STA Thomas Pedersen
2020-08-27 22:32 ` [PATCH 14/22] mac80211: encode listen interval for S1G Thomas Pedersen
2020-08-27 22:32 ` [PATCH 15/22] mac80211: don't calculate duration " Thomas Pedersen
2020-08-27 22:32 ` [PATCH 16/22] mac80211: handle S1G low rates Thomas Pedersen
2020-08-27 22:32 ` [PATCH 17/22] mac80211: avoid rate init for S1G band Thomas Pedersen
2020-08-27 22:33 ` [PATCH 18/22] mac80211: receive and process S1G beacons Thomas Pedersen
2020-08-27 22:33 ` [PATCH 19/22] mac80211: support S1G association Thomas Pedersen
2020-08-27 22:33 ` [PATCH 20/22] nl80211: include frequency offset in survey info Thomas Pedersen
2020-08-27 22:33 ` [PATCH 21/22] mac80211_hwsim: indicate support for S1G Thomas Pedersen
2020-08-28  6:54   ` kernel test robot
2020-08-28  7:52   ` Kalle Valo
2020-08-31 16:42     ` Thomas Pedersen
2020-08-30  2:28   ` [mac80211_hwsim] dc5ef7078b: BUG:KASAN:stack-out-of-bounds_in__freq_reg_info kernel test robot
2020-08-27 22:33 ` [PATCH 22/22] mac80211_hwsim: fix TSF timestamp write to S1G beacon Thomas Pedersen

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