The ieee80211_check_combinations() computes
radar_detect accordingly depending on chanctx
reservation status.
This makes it possible to use the function for
channel_switch validation.
Signed-off-by: Michal Kazior <michal.kazior@xxxxxxxxx>
---
v3:
* fix typo in comment [Johannes]
* fix comment style [Johannes]
net/mac80211/util.c | 39 +++++++++++++++++++++++++++++++++++++--
1 file changed, 37 insertions(+), 2 deletions(-)
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 09c4794..e9dc90c 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -2802,6 +2802,42 @@ void ieee80211_recalc_dtim(struct ieee80211_local *local,
ps->dtim_count = dtim_count;
}
+static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
+ struct ieee80211_chanctx *ctx)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_chanctx_conf *conf;
+ u8 radar_detect = 0;
+ bool in_place = false;
+
+ lockdep_assert_held(&local->chanctx_mtx);
+
+ list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list) {
+ if (sdata->reserved_radar_required)
+ radar_detect |= BIT(sdata->reserved_chandef.width);
+
+ conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
+ lockdep_is_held(&local->chanctx_mtx));
+ if (conf == &ctx->conf)
+ in_place = true;
+ }
+
+ /*
+ * if chanctx has in-place reservation then consider only the future
+ * radar_detect. multi-vif reservation is deferred so ignore assigned
+ * vifs. it is impossible for new vifs to be bound to an in-place
+ * reserved chanctx so consistency is guaranteed
+ */
+ if (in_place)
+ return radar_detect;
+
+ list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
+ if (sdata->radar_required)
+ radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
+
+ return radar_detect;
+}
+
int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
const struct cfg80211_chan_def *chandef,
enum ieee80211_chanctx_mode chanmode,
@@ -2843,8 +2879,7 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
num[iftype] = 1;
list_for_each_entry(ctx, &local->chanctx_list, list) {
- if (ctx->conf.radar_enabled)
- radar_detect |= BIT(ctx->conf.def.width);
+ radar_detect |= ieee80211_chanctx_radar_detect(local, ctx);
if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
num_different_channels++;
continue;
--
1.8.5.3
--
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