Until now, the wifi default channels were assumed to be
NL80211_CHAN_NO_HT, or NL80211_CHAN_WIDTH_20_NOHT. S1G
devices however do not support these channel types/width.
When a default channel width is requested (during default
chandef init, or chanctx removal when not using channel
context), for S1G calculate the correct width. Fixes eg.
configuring strange (20Mhz) width during a scan on the S1G
band.
Signed-off-by: Thomas Pedersen <thomas@xxxxxxxxxxxx>
---
net/mac80211/chan.c | 9 ++++++++-
net/wireless/chan.c | 10 ++++++++++
2 files changed, 18 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index bdc0f29dc6cd..8f48aff74c7b 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -536,7 +536,14 @@ static void ieee80211_del_chanctx(struct ieee80211_local *local,
if (!local->use_chanctx) {
struct cfg80211_chan_def *chandef = &local->_oper_chandef;
- chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
+ /* S1G doesn't have 20MHz, so get the correct width for the
+ * current channel.
+ */
+ if (chandef->chan->band == NL80211_BAND_S1GHZ)
+ chandef->width =
+ ieee80211_s1g_channel_width(chandef->chan);
+ else
+ chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
chandef->center_freq1 = chandef->chan->center_freq;
chandef->freq1_offset = chandef->chan->freq_offset;
chandef->center_freq2 = 0;
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index 0a4b8d3eaed9..3bff52d51b05 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -32,6 +32,16 @@ void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
chandef->edmg.bw_config = 0;
chandef->edmg.channels = 0;
+ /* S1G allows a single width per channel, and since chan_type seems to
+ * be for backwards compatibility only, ignore it and return the per
+ * frequency width.
+ */
+ if (chan->band == NL80211_BAND_S1GHZ) {
+ chandef->width = ieee80211_s1g_channel_width(chan);
+ chandef->center_freq1 = chan->center_freq;
+ return;
+ }
+
switch (chan_type) {
case NL80211_CHAN_NO_HT:
chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
--
2.20.1
