wifi: mac80211: add radio index to ieee80211_chanctx_conf

Will be used to explicitly assign a channel context to a wiphy radio.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/59f76f57d935f155099276be22badfa671d5bfd9.1720514221.git-series.nbd@nbd.nameSigned-off-by: Johannes Berg <johannes.berg@intel.com>

include/net/mac80211.h

@@ -250,6 +250,7 @@ struct ieee80211_chan_req {
  * @min_def: the minimum channel definition currently required.
  * @ap: the channel definition the AP actually is operating as,
  *	for use with (wider bandwidth) OFDMA
+ * @radio_idx: index of the wiphy radio used used for this channel
  * @rx_chains_static: The number of RX chains that must always be
  *	active on the channel to receive MIMO transmissions
  * @rx_chains_dynamic: The number of RX chains that must be enabled
@@ -264,6 +265,7 @@ struct ieee80211_chanctx_conf {
 	struct cfg80211_chan_def min_def;
 	struct cfg80211_chan_def ap;
 
+	int radio_idx;
 	u8 rx_chains_static, rx_chains_dynamic;
 
 	bool radar_enabled;

net/mac80211/chan.c

@@ -656,7 +656,8 @@ ieee80211_chanctx_radar_required(struct ieee80211_local *local,
 static struct ieee80211_chanctx *
 ieee80211_alloc_chanctx(struct ieee80211_local *local,
 			const struct ieee80211_chan_req *chanreq,
-			enum ieee80211_chanctx_mode mode)
+			enum ieee80211_chanctx_mode mode,
+			int radio_idx)
 {
 	struct ieee80211_chanctx *ctx;
 
@@ -674,6 +675,7 @@ ieee80211_alloc_chanctx(struct ieee80211_local *local,
 	ctx->conf.rx_chains_dynamic = 1;
 	ctx->mode = mode;
 	ctx->conf.radar_enabled = false;
+	ctx->conf.radio_idx = radio_idx;
 	_ieee80211_recalc_chanctx_min_def(local, ctx, NULL, false);
 
 	return ctx;
@@ -714,7 +716,7 @@ ieee80211_new_chanctx(struct ieee80211_local *local,
 
 	lockdep_assert_wiphy(local->hw.wiphy);
 
-	ctx = ieee80211_alloc_chanctx(local, chanreq, mode);
+	ctx = ieee80211_alloc_chanctx(local, chanreq, mode, -1);
 	if (!ctx)
 		return ERR_PTR(-ENOMEM);
 
@@ -1155,7 +1157,7 @@ int ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
 			    !list_empty(&curr_ctx->reserved_links))
 				return -EBUSY;
 
-			new_ctx = ieee80211_alloc_chanctx(local, chanreq, mode);
+			new_ctx = ieee80211_alloc_chanctx(local, chanreq, mode, -1);
 			if (!new_ctx)
 				return -ENOMEM;