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>
---
Notes:
v3:
* fix typo in comment [Johannes]
* fix comment style [Johannes]
v7:
* use replaces/replaced_by pointers
* replace radar_detect calculation in ieee80211_max_num_channels() too
net/mac80211/util.c | 34 ++++++++++++++++++++++++++++++----
1 file changed, 30 insertions(+), 4 deletions(-)
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 6615044..b2f7bf9 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -2836,6 +2836,34 @@ 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;
+ u8 radar_detect = 0;
+
+ lockdep_assert_held(&local->chanctx_mtx);
+
+ if (WARN_ON(ctx->replaced_by))
+ return 0;
+
+ list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
+ if (sdata->reserved_radar_required)
+ radar_detect |= BIT(sdata->reserved_chandef.width);
+
+ /*
+ * An in-place reservation context should not have any assigned vifs
+ * until it replaces the other context.
+ */
+ WARN_ON(ctx->replaces && !list_empty(&ctx->assigned_vifs));
+
+ 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,
@@ -2879,8 +2907,7 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
list_for_each_entry(ctx, &local->chanctx_list, list) {
if (ctx->replaced_by)
continue;
- 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;
@@ -2942,8 +2969,7 @@ int ieee80211_max_num_channels(struct ieee80211_local *local)
num_different_channels++;
- if (ctx->conf.radar_enabled)
- radar_detect |= BIT(ctx->conf.def.width);
+ radar_detect |= ieee80211_chanctx_radar_detect(local, ctx);
}
list_for_each_entry_rcu(sdata, &local->interfaces, list)
--
1.8.5.3
--
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