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authorThomas Pedersen <thomas@adapt-ip.com>2020-09-22 05:28:03 +0300
committerJohannes Berg <johannes.berg@intel.com>2020-09-28 14:53:05 +0300
commit75b1593533f13a2b77306a1edb971be2d8705dd7 (patch)
treea3be333c6a4c67e65705500c1d70ff0a11ba1abc /net/mac80211/scan.c
parent5e48077498918e9e42f689df5f14dbdc3f1b8cc2 (diff)
downloadlinux-75b1593533f13a2b77306a1edb971be2d8705dd7.tar.xz
mac80211: s1g: choose scanning width based on frequency
An S1G BSS can beacon at either 1 or 2 MHz and the channel width is unique to a given frequency. Ignore scan channel width for now and use the allowed channel width. Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com> Link: https://lore.kernel.org/r/20200922022818.15855-3-thomas@adapt-ip.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/scan.c')
-rw-r--r--net/mac80211/scan.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 7361e1239bf2..d211160e42da 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -909,6 +909,17 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,
local->scan_chandef.center_freq1 = chan->center_freq;
local->scan_chandef.freq1_offset = chan->freq_offset;
local->scan_chandef.center_freq2 = 0;
+
+ /* For scanning on the S1G band, ignore scan_width (which is constant
+ * across all channels) for now since channel width is specific to each
+ * channel. Detect the required channel width here and likely revisit
+ * later. Maybe scan_width could be used to build the channel scan list?
+ */
+ if (chan->band == NL80211_BAND_S1GHZ) {
+ local->scan_chandef.width = ieee80211_s1g_channel_width(chan);
+ goto set_channel;
+ }
+
switch (scan_req->scan_width) {
case NL80211_BSS_CHAN_WIDTH_5:
local->scan_chandef.width = NL80211_CHAN_WIDTH_5;
@@ -929,8 +940,14 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,
else
local->scan_chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
break;
+ case NL80211_BSS_CHAN_WIDTH_1:
+ case NL80211_BSS_CHAN_WIDTH_2:
+ /* shouldn't get here, S1G handled above */
+ WARN_ON(1);
+ break;
}
+set_channel:
if (ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL))
skip = 1;