ath9k: Summarize hw state per channel context

Group and set hw state (opmode, primary_sta, beacon conf) per
channel context instead of whole list of vifs. This would allow
each channel context to run in different mode (STA/AP).
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/ath9k.h

@@ -328,6 +328,9 @@ struct ath_chanctx {
 	struct list_head vifs;
 	struct list_head acq[IEEE80211_NUM_ACS];
 
+	/* do not dereference, use for comparison only */
+	struct ieee80211_vif *primary_sta;
+
 	struct ath_beacon_config beacon;
 	struct ath9k_hw_cal_data caldata;
 	struct timespec tsf_ts;
@@ -438,7 +441,6 @@ struct ath_vif {
 	struct ieee80211_vif *vif;
 	struct ath_node mcast_node;
 	int av_bslot;
-	bool primary_sta_vif;
 	__le64 tsf_adjust; /* TSF adjustment for staggered beacons */
 	struct ath_buf *av_bcbuf;
 	struct ath_chanctx *chanctx;
@@ -451,17 +453,22 @@ struct ath9k_vif_iter_data {
 	u8 hw_macaddr[ETH_ALEN]; /* address of the first vif */
 	u8 mask[ETH_ALEN]; /* bssid mask */
 	bool has_hw_macaddr;
+	u8 slottime;
+	bool beacons;
 
 	int naps;      /* number of AP vifs */
 	int nmeshes;   /* number of mesh vifs */
 	int nstations; /* number of station vifs */
 	int nwds;      /* number of WDS vifs */
 	int nadhocs;   /* number of adhoc vifs */
+	struct ieee80211_vif *primary_sta;
 };
 
-void ath9k_calculate_iter_data(struct ieee80211_hw *hw,
-			       struct ieee80211_vif *vif,
+void ath9k_calculate_iter_data(struct ath_softc *sc,
+			       struct ath_chanctx *ctx,
 			       struct ath9k_vif_iter_data *iter_data);
+void ath9k_calculate_summary_state(struct ath_softc *sc,
+				   struct ath_chanctx *ctx);
 
 /*******************/
 /* Beacon Handling */

drivers/net/wireless/ath/ath9k/beacon.c

@@ -277,8 +277,8 @@ static int ath9k_beacon_choose_slot(struct ath_softc *sc)
 static void ath9k_set_tsfadjust(struct ath_softc *sc, struct ieee80211_vif *vif)
 {
 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
-	struct ath_beacon_config *cur_conf = &sc->cur_chan->beacon;
 	struct ath_vif *avp = (void *)vif->drv_priv;
+	struct ath_beacon_config *cur_conf = &avp->chanctx->beacon;
 	u32 tsfadjust;
 
 	if (avp->av_bslot == 0)
@@ -500,7 +500,6 @@ static bool ath9k_allow_beacon_config(struct ath_softc *sc,
 				      struct ieee80211_vif *vif)
 {
 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
-	struct ath_vif *avp = (void *)vif->drv_priv;
 
 	if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
 		if ((vif->type != NL80211_IFTYPE_AP) ||
@@ -514,7 +513,7 @@ static bool ath9k_allow_beacon_config(struct ath_softc *sc,
 	if (sc->sc_ah->opmode == NL80211_IFTYPE_STATION) {
 		if ((vif->type == NL80211_IFTYPE_STATION) &&
 		    test_bit(ATH_OP_BEACONS, &common->op_flags) &&
-		    !avp->primary_sta_vif) {
+		    vif != sc->cur_chan->primary_sta) {
 			ath_dbg(common, CONFIG,
 				"Beacon already configured for a station interface\n");
 			return false;
@@ -525,10 +524,11 @@ static bool ath9k_allow_beacon_config(struct ath_softc *sc,
 }
 
 static void ath9k_cache_beacon_config(struct ath_softc *sc,
+				      struct ath_chanctx *ctx,
 				      struct ieee80211_bss_conf *bss_conf)
 {
 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
-	struct ath_beacon_config *cur_conf = &sc->cur_chan->beacon;
+	struct ath_beacon_config *cur_conf = &ctx->beacon;
 
 	ath_dbg(common, BEACON,
 		"Caching beacon data for BSS: %pM\n", bss_conf->bssid);
@@ -564,20 +564,29 @@ void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif,
 			 u32 changed)
 {
 	struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
-	struct ath_beacon_config *cur_conf = &sc->cur_chan->beacon;
         struct ath_hw *ah = sc->sc_ah;
         struct ath_common *common = ath9k_hw_common(ah);
+	struct ath_vif *avp = (void *)vif->drv_priv;
+	struct ath_chanctx *ctx = avp->chanctx;
+	struct ath_beacon_config *cur_conf;
 	unsigned long flags;
 	bool skip_beacon = false;
 
+	if (!ctx)
+		return;
+
+	cur_conf = &avp->chanctx->beacon;
 	if (vif->type == NL80211_IFTYPE_AP)
 		ath9k_set_tsfadjust(sc, vif);
 
 	if (!ath9k_allow_beacon_config(sc, vif))
 		return;
 
-	if (sc->sc_ah->opmode == NL80211_IFTYPE_STATION) {
-		ath9k_cache_beacon_config(sc, bss_conf);
+	if (vif->type == NL80211_IFTYPE_STATION) {
+		ath9k_cache_beacon_config(sc, ctx, bss_conf);
+		if (ctx != sc->cur_chan)
+			return;
+
 		ath9k_set_beacon(sc);
 		set_bit(ATH_OP_BEACONS, &common->op_flags);
 		return;
@@ -593,10 +602,13 @@ void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif,
 			cur_conf->enable_beacon = false;
 		} else if (bss_conf->enable_beacon) {
 			cur_conf->enable_beacon = true;
-			ath9k_cache_beacon_config(sc, bss_conf);
+			ath9k_cache_beacon_config(sc, ctx, bss_conf);
 		}
 	}
 
+	if (ctx != sc->cur_chan)
+		return;
+
 	/*
 	 * Configure the HW beacon registers only when we have a valid
 	 * beacon interval.

drivers/net/wireless/ath/ath9k/debug.c

@@ -750,13 +750,13 @@ static ssize_t read_file_misc(struct file *file, char __user *user_buf,
 {
 	struct ath_softc *sc = file->private_data;
 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
-	struct ieee80211_hw *hw = sc->hw;
 	struct ath9k_vif_iter_data iter_data;
+	struct ath_chanctx *ctx;
 	char buf[512];
 	unsigned int len = 0;
 	ssize_t retval = 0;
 	unsigned int reg;
-	u32 rxfilter;
+	u32 rxfilter, i;
 
 	len += scnprintf(buf + len, sizeof(buf) - len,
 			 "BSSID: %pM\n", common->curbssid);
@@ -826,14 +826,20 @@ static ssize_t read_file_misc(struct file *file, char __user *user_buf,
 
 	len += scnprintf(buf + len, sizeof(buf) - len, "\n");
 
-	ath9k_calculate_iter_data(hw, NULL, &iter_data);
-
-	len += scnprintf(buf + len, sizeof(buf) - len,
-			 "VIF-COUNTS: AP: %i STA: %i MESH: %i WDS: %i"
-			 " ADHOC: %i TOTAL: %hi BEACON-VIF: %hi\n",
-			 iter_data.naps, iter_data.nstations, iter_data.nmeshes,
-			 iter_data.nwds, iter_data.nadhocs,
-			 sc->nvifs, sc->nbcnvifs);
+	i = 0;
+	ath_for_each_chanctx(sc, ctx) {
+		if (!ctx->assigned || list_empty(&ctx->vifs))
+			continue;
+		ath9k_calculate_iter_data(sc, ctx, &iter_data);
+
+		len += scnprintf(buf + len, sizeof(buf) - len,
+			"VIF-COUNTS: CTX %i AP: %i STA: %i MESH: %i WDS: %i",
+			i++, iter_data.naps, iter_data.nstations,
+			iter_data.nmeshes, iter_data.nwds);
+		len += scnprintf(buf + len, sizeof(buf) - len,
+			" ADHOC: %i TOTAL: %hi BEACON-VIF: %hi\n",
+			iter_data.nadhocs, sc->nvifs, sc->nbcnvifs);
+	}
 
 	if (len > sizeof(buf))
 		len = sizeof(buf);