iwlwifi: pass context to iwl_send_rxon_timing

Sometimes we need to send RXON timing even
when we don't have a virtual interface yet,
so pass the context and allow passing one
without a virtual interface pointer.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

drivers/net/wireless/iwlwifi/iwl-agn.c

@@ -183,14 +183,12 @@ int iwl_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 	iwl_set_rxon_hwcrypto(priv, ctx, !priv->cfg->mod_params->sw_crypto);
 
 	if (new_assoc) {
-		if (WARN_ON(!ctx->vif))
-			return -EINVAL;
 		/*
 		 * First of all, before setting associated, we need to
 		 * send RXON timing so the device knows about the DTIM
 		 * period and other timing values
 		 */
-		ret = iwl_send_rxon_timing(priv, ctx->vif);
+		ret = iwl_send_rxon_timing(priv, ctx);
 		if (ret) {
 			IWL_ERR(priv, "Error setting RXON timing!\n");
 			return ret;
@@ -3296,7 +3294,7 @@ void iwl_post_associate(struct iwl_priv *priv, struct ieee80211_vif *vif)
 	ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 	iwlcore_commit_rxon(priv, ctx);
 
-	ret = iwl_send_rxon_timing(priv, vif);
+	ret = iwl_send_rxon_timing(priv, ctx);
 	if (ret)
 		IWL_WARN(priv, "RXON timing - "
 			    "Attempting to continue.\n");
@@ -3536,7 +3534,7 @@ void iwl_config_ap(struct iwl_priv *priv, struct ieee80211_vif *vif)
 		iwlcore_commit_rxon(priv, ctx);
 
 		/* RXON Timing */
-		ret = iwl_send_rxon_timing(priv, vif);
+		ret = iwl_send_rxon_timing(priv, ctx);
 		if (ret)
 			IWL_WARN(priv, "RXON timing failed - "
 					"Attempting to continue.\n");

drivers/net/wireless/iwlwifi/iwl-core.c

@@ -500,13 +500,13 @@ static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
 	return new_val;
 }
 
-int iwl_send_rxon_timing(struct iwl_priv *priv, struct ieee80211_vif *vif)
+int iwl_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 {
 	u64 tsf;
 	s32 interval_tm, rem;
 	struct ieee80211_conf *conf = NULL;
 	u16 beacon_int;
-	struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
+	struct ieee80211_vif *vif = ctx->vif;
 
 	conf = ieee80211_get_hw_conf(priv->hw);
 
@@ -517,15 +517,13 @@ int iwl_send_rxon_timing(struct iwl_priv *priv, struct ieee80211_vif *vif)
 	ctx->timing.timestamp = cpu_to_le64(priv->timestamp);
 	ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval);
 
-	beacon_int = vif->bss_conf.beacon_int;
+	beacon_int = vif ? vif->bss_conf.beacon_int : 0;
 
-	if (vif->type == NL80211_IFTYPE_ADHOC) {
-		/* TODO: we need to get atim_window from upper stack
-		 * for now we set to 0 */
-		ctx->timing.atim_window = 0;
-	} else {
+	/*
+	 * TODO: For IBSS we need to get atim_window from mac80211,
+	 *	 for now just always use 0
+	 */
 	ctx->timing.atim_window = 0;
-	}
 
 	beacon_int = iwl_adjust_beacon_interval(beacon_int,
 				priv->hw_params.max_beacon_itrvl * TIME_UNIT);
@@ -536,7 +534,7 @@ int iwl_send_rxon_timing(struct iwl_priv *priv, struct ieee80211_vif *vif)
 	rem = do_div(tsf, interval_tm);
 	ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 
-	ctx->timing.dtim_period = vif->bss_conf.dtim_period;
+	ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1;
 
 	IWL_DEBUG_ASSOC(priv,
 			"beacon interval %d beacon timer %d beacon tim %d\n",

drivers/net/wireless/iwlwifi/iwl-core.h

@@ -728,7 +728,7 @@ extern int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
 void iwl_apm_stop(struct iwl_priv *priv);
 int iwl_apm_init(struct iwl_priv *priv);
 
-int iwl_send_rxon_timing(struct iwl_priv *priv, struct ieee80211_vif *vif);
+int iwl_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
 static inline int iwl_send_rxon_assoc(struct iwl_priv *priv,
 				      struct iwl_rxon_context *ctx)
 {

drivers/net/wireless/iwlwifi/iwl3945-base.c

@@ -3110,7 +3110,7 @@ void iwl3945_post_associate(struct iwl_priv *priv, struct ieee80211_vif *vif)
 	ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 	iwlcore_commit_rxon(priv, ctx);
 
-	rc = iwl_send_rxon_timing(priv, vif);
+	rc = iwl_send_rxon_timing(priv, ctx);
 	if (rc)
 		IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
 			    "Attempting to continue.\n");
@@ -3285,7 +3285,7 @@ void iwl3945_config_ap(struct iwl_priv *priv, struct ieee80211_vif *vif)
 		iwlcore_commit_rxon(priv, ctx);
 
 		/* RXON Timing */
-		rc = iwl_send_rxon_timing(priv, vif);
+		rc = iwl_send_rxon_timing(priv, ctx);
 		if (rc)
 			IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
 					"Attempting to continue.\n");