6.15-stable review patch. If anyone has any objections, please let me know.
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From: Ramya Gnanasekar ramya.gnanasekar@oss.qualcomm.com
[ Upstream commit 140c6a61d83cbd85adba769b5ef8d61acfa5b392 ]
Currently, when a non-DFS channel is brought up and the bandwidth is expanded from 80 MHz to 160 MHz, where the primary 80 MHz is non-DFS and the secondary 80 MHz consists of DFS channels, radar detection fails if radar occurs in the secondary 80 MHz.
When the channel is switched from 80 MHz to 160 MHz, with the primary 80 MHz being non-DFS and the secondary 80 MHz consisting of DFS channels, the radar required flag in the channel switch parameters is set to true. However, when using a reserved channel context, it is not updated in sdata, which disables radar detection in the secondary 80 MHz DFS channels.
Update the radar required flag in sdata to fix this issue when using a reserved channel context.
Signed-off-by: Ramya Gnanasekar ramya.gnanasekar@oss.qualcomm.com Signed-off-by: Ramasamy Kaliappan ramasamy.kaliappan@oss.qualcomm.com Link: https://patch.msgid.link/20250608140324.1687117-1-ramasamy.kaliappan@oss.qua... Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/mac80211/chan.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 3aaf5abf1acc..e0fdeaafc489 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -1381,6 +1381,7 @@ ieee80211_link_use_reserved_reassign(struct ieee80211_link_data *link) goto out; }
+ link->radar_required = link->reserved_radar_required; list_move(&link->assigned_chanctx_list, &new_ctx->assigned_links); rcu_assign_pointer(link_conf->chanctx_conf, &new_ctx->conf);