iwlwifi: initial contextification

In order to support multiple interfaces, we must move
a lot of data into per-context structures so we can
use the contexts the device offers. To start with,
this makes a lot of code context-aware, more changes
will move more things into the context structure.
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-3945-rs.c

@@ -949,7 +949,8 @@ void iwl3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id)
 	switch (priv->band) {
 	case IEEE80211_BAND_2GHZ:
 		/* TODO: this always does G, not a regression */
-		if (priv->active_rxon.flags & RXON_FLG_TGG_PROTECT_MSK) {
+		if (priv->contexts[IWL_RXON_CTX_BSS].active.flags &
+						RXON_FLG_TGG_PROTECT_MSK) {
 			rs_sta->tgg = 1;
 			rs_sta->expected_tpt = iwl3945_expected_tpt_g_prot;
 		} else

drivers/net/wireless/iwlwifi/iwl-3945.c

@@ -245,7 +245,7 @@ int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate)
 		break;
 	case IEEE80211_BAND_2GHZ:
 		if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) &&
-		    iwl_is_associated(priv)) {
+		    iwl_is_associated(priv, IWL_RXON_CTX_BSS)) {
 			if (rate == IWL_RATE_11M_INDEX)
 				next_rate = IWL_RATE_5M_INDEX;
 		}
@@ -1439,17 +1439,18 @@ static int iwl3945_send_tx_power(struct iwl_priv *priv)
 	int rate_idx, i;
 	const struct iwl_channel_info *ch_info = NULL;
 	struct iwl3945_txpowertable_cmd txpower = {
-		.channel = priv->active_rxon.channel,
+		.channel = priv->contexts[IWL_RXON_CTX_BSS].active.channel,
 	};
+	u16 chan;
+
+	chan = le16_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.channel);
 
 	txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1;
-	ch_info = iwl_get_channel_info(priv,
-				       priv->band,
-				       le16_to_cpu(priv->active_rxon.channel));
+	ch_info = iwl_get_channel_info(priv, priv->band, chan);
 	if (!ch_info) {
 		IWL_ERR(priv,
 			"Failed to get channel info for channel %d [%d]\n",
-			le16_to_cpu(priv->active_rxon.channel), priv->band);
+			chan, priv->band);
 		return -EINVAL;
 	}
 
@@ -1710,7 +1711,8 @@ int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
 	return 0;
 }
 
-static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
+static int iwl3945_send_rxon_assoc(struct iwl_priv *priv,
+				   struct iwl_rxon_context *ctx)
 {
 	int rc = 0;
 	struct iwl_rx_packet *pkt;
@@ -1721,8 +1723,8 @@ static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
 		.flags = CMD_WANT_SKB,
 		.data = &rxon_assoc,
 	};
-	const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
-	const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
+	const struct iwl_rxon_cmd *rxon1 = &ctx->staging;
+	const struct iwl_rxon_cmd *rxon2 = &ctx->active;
 
 	if ((rxon1->flags == rxon2->flags) &&
 	    (rxon1->filter_flags == rxon2->filter_flags) &&
@@ -1732,10 +1734,10 @@ static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
 		return 0;
 	}
 
-	rxon_assoc.flags = priv->staging_rxon.flags;
-	rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
-	rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
-	rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
+	rxon_assoc.flags = ctx->staging.flags;
+	rxon_assoc.filter_flags = ctx->staging.filter_flags;
+	rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates;
+	rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates;
 	rxon_assoc.reserved = 0;
 
 	rc = iwl_send_cmd_sync(priv, &cmd);
@@ -1761,14 +1763,14 @@ static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
  * function correctly transitions out of the RXON_ASSOC_MSK state if
  * a HW tune is required based on the RXON structure changes.
  */
-static int iwl3945_commit_rxon(struct iwl_priv *priv)
+static int iwl3945_commit_rxon(struct iwl_priv *priv,
+			       struct iwl_rxon_context *ctx)
 {
 	/* cast away the const for active_rxon in this function */
-	struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
-	struct iwl3945_rxon_cmd *staging_rxon = (void *)&priv->staging_rxon;
+	struct iwl3945_rxon_cmd *active_rxon = (void *)&ctx->active;
+	struct iwl3945_rxon_cmd *staging_rxon = (void *)&ctx->staging;
 	int rc = 0;
-	bool new_assoc =
-		!!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
+	bool new_assoc = !!(staging_rxon->filter_flags & RXON_FILTER_ASSOC_MSK);
 
 	if (!iwl_is_alive(priv))
 		return -1;
@@ -1781,7 +1783,7 @@ static int iwl3945_commit_rxon(struct iwl_priv *priv)
 	    ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
 	staging_rxon->flags |= iwl3945_get_antenna_flags(priv);
 
-	rc = iwl_check_rxon_cmd(priv);
+	rc = iwl_check_rxon_cmd(priv, ctx);
 	if (rc) {
 		IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
 		return -EINVAL;
@@ -1790,8 +1792,9 @@ static int iwl3945_commit_rxon(struct iwl_priv *priv)
 	/* If we don't need to send a full RXON, we can use
 	 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
 	 * and other flags for the current radio configuration. */
-	if (!iwl_full_rxon_required(priv)) {
-		rc = iwl_send_rxon_assoc(priv);
+	if (!iwl_full_rxon_required(priv, &priv->contexts[IWL_RXON_CTX_BSS])) {
+		rc = iwl_send_rxon_assoc(priv,
+					 &priv->contexts[IWL_RXON_CTX_BSS]);
 		if (rc) {
 			IWL_ERR(priv, "Error setting RXON_ASSOC "
 				  "configuration (%d).\n", rc);
@@ -1807,7 +1810,7 @@ static int iwl3945_commit_rxon(struct iwl_priv *priv)
 	 * an RXON_ASSOC and the new config wants the associated mask enabled,
 	 * we must clear the associated from the active configuration
 	 * before we apply the new config */
-	if (iwl_is_associated(priv) && new_assoc) {
+	if (iwl_is_associated(priv, IWL_RXON_CTX_BSS) && new_assoc) {
 		IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
 		active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 
@@ -1819,7 +1822,7 @@ static int iwl3945_commit_rxon(struct iwl_priv *priv)
 		active_rxon->reserved5 = 0;
 		rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 				      sizeof(struct iwl3945_rxon_cmd),
-				      &priv->active_rxon);
+				      &priv->contexts[IWL_RXON_CTX_BSS].active);
 
 		/* If the mask clearing failed then we set
 		 * active_rxon back to what it was previously */
@@ -1848,7 +1851,7 @@ static int iwl3945_commit_rxon(struct iwl_priv *priv)
 	staging_rxon->reserved4 = 0;
 	staging_rxon->reserved5 = 0;
 
-	iwl_set_rxon_hwcrypto(priv, !iwl3945_mod_params.sw_crypto);
+	iwl_set_rxon_hwcrypto(priv, ctx, !iwl3945_mod_params.sw_crypto);
 
 	/* Apply the new configuration */
 	rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
@@ -2366,7 +2369,7 @@ int iwl3945_init_hw_rate_table(struct iwl_priv *priv)
 		 * 1M CCK rates */
 
 		if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) &&
-		    iwl_is_associated(priv)) {
+		    iwl_is_associated(priv, IWL_RXON_CTX_BSS)) {
 
 			index = IWL_FIRST_CCK_RATE;
 			for (i = IWL_RATE_6M_INDEX_TABLE;

drivers/net/wireless/iwlwifi/iwl-4965.c

@@ -347,7 +347,7 @@ static void iwl4965_chain_noise_reset(struct iwl_priv *priv)
 	struct iwl_chain_noise_data *data = &(priv->chain_noise_data);
 
 	if ((data->state == IWL_CHAIN_NOISE_ALIVE) &&
-	     iwl_is_associated(priv)) {
+	    iwl_is_any_associated(priv)) {
 		struct iwl_calib_diff_gain_cmd cmd;
 
 		/* clear data for chain noise calibration algorithm */
@@ -1374,6 +1374,7 @@ static int iwl4965_send_tx_power(struct iwl_priv *priv)
 	u8 band = 0;
 	bool is_ht40 = false;
 	u8 ctrl_chan_high = 0;
+	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 
 	if (test_bit(STATUS_SCANNING, &priv->status)) {
 		/* If this gets hit a lot, switch it to a BUG() and catch
@@ -1385,17 +1386,16 @@ static int iwl4965_send_tx_power(struct iwl_priv *priv)
 
 	band = priv->band == IEEE80211_BAND_2GHZ;
 
-	is_ht40 =  is_ht40_channel(priv->active_rxon.flags);
+	is_ht40 = is_ht40_channel(ctx->active.flags);
 
-	if (is_ht40 &&
-	    (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
+	if (is_ht40 && (ctx->active.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
 		ctrl_chan_high = 1;
 
 	cmd.band = band;
-	cmd.channel = priv->active_rxon.channel;
+	cmd.channel = ctx->active.channel;
 
 	ret = iwl4965_fill_txpower_tbl(priv, band,
-				le16_to_cpu(priv->active_rxon.channel),
+				le16_to_cpu(ctx->active.channel),
 				is_ht40, ctrl_chan_high, &cmd.tx_power);
 	if (ret)
 		goto out;
@@ -1406,12 +1406,13 @@ static int iwl4965_send_tx_power(struct iwl_priv *priv)
 	return ret;
 }
 
-static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
+static int iwl4965_send_rxon_assoc(struct iwl_priv *priv,
+				   struct iwl_rxon_context *ctx)
 {
 	int ret = 0;
 	struct iwl4965_rxon_assoc_cmd rxon_assoc;
-	const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
-	const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
+	const struct iwl_rxon_cmd *rxon1 = &ctx->staging;
+	const struct iwl_rxon_cmd *rxon2 = &ctx->active;
 
 	if ((rxon1->flags == rxon2->flags) &&
 	    (rxon1->filter_flags == rxon2->filter_flags) &&
@@ -1426,16 +1427,16 @@ static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
 		return 0;
 	}
 
-	rxon_assoc.flags = priv->staging_rxon.flags;
-	rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
-	rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
-	rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
+	rxon_assoc.flags = ctx->staging.flags;
+	rxon_assoc.filter_flags = ctx->staging.filter_flags;
+	rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates;
+	rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates;
 	rxon_assoc.reserved = 0;
 	rxon_assoc.ofdm_ht_single_stream_basic_rates =
-	    priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
+	    ctx->staging.ofdm_ht_single_stream_basic_rates;
 	rxon_assoc.ofdm_ht_dual_stream_basic_rates =
-	    priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
-	rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
+	    ctx->staging.ofdm_ht_dual_stream_basic_rates;
+	rxon_assoc.rx_chain_select_flags = ctx->staging.rx_chain;
 
 	ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC,
 				     sizeof(rxon_assoc), &rxon_assoc, NULL);
@@ -1448,6 +1449,7 @@ static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
 static int iwl4965_hw_channel_switch(struct iwl_priv *priv,
 				     struct ieee80211_channel_switch *ch_switch)
 {
+	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 	int rc;
 	u8 band = 0;
 	bool is_ht40 = false;
@@ -1458,22 +1460,22 @@ static int iwl4965_hw_channel_switch(struct iwl_priv *priv,
 	u16 ch;
 	u32 tsf_low;
 	u8 switch_count;
-	u16 beacon_interval = le16_to_cpu(priv->rxon_timing.beacon_interval);
+	u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
 	struct ieee80211_vif *vif = priv->vif;
 	band = priv->band == IEEE80211_BAND_2GHZ;
 
-	is_ht40 = is_ht40_channel(priv->staging_rxon.flags);
+	is_ht40 = is_ht40_channel(ctx->staging.flags);
 
 	if (is_ht40 &&
-	    (priv->staging_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
+	    (ctx->staging.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
 		ctrl_chan_high = 1;
 
 	cmd.band = band;
 	cmd.expect_beacon = 0;
 	ch = ch_switch->channel->hw_value;
 	cmd.channel = cpu_to_le16(ch);
-	cmd.rxon_flags = priv->staging_rxon.flags;
-	cmd.rxon_filter_flags = priv->staging_rxon.filter_flags;
+	cmd.rxon_flags = ctx->staging.flags;
+	cmd.rxon_filter_flags = ctx->staging.filter_flags;
 	switch_count = ch_switch->count;
 	tsf_low = ch_switch->timestamp & 0x0ffffffff;
 	/*
@@ -1508,7 +1510,7 @@ static int iwl4965_hw_channel_switch(struct iwl_priv *priv,
 		cmd.expect_beacon = is_channel_radar(ch_info);
 	else {
 		IWL_ERR(priv, "invalid channel switch from %u to %u\n",
-			priv->active_rxon.channel, ch);
+			ctx->active.channel, ch);
 		return -EFAULT;
 	}
 

drivers/net/wireless/iwlwifi/iwl-5000.c

@@ -275,13 +275,18 @@ static void iwl5150_temperature(struct iwl_priv *priv)
 static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
 				     struct ieee80211_channel_switch *ch_switch)
 {
+	/*
+	 * MULTI-FIXME
+	 * See iwl_mac_channel_switch.
+	 */
+	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 	struct iwl5000_channel_switch_cmd cmd;
 	const struct iwl_channel_info *ch_info;
 	u32 switch_time_in_usec, ucode_switch_time;
 	u16 ch;
 	u32 tsf_low;
 	u8 switch_count;
-	u16 beacon_interval = le16_to_cpu(priv->rxon_timing.beacon_interval);
+	u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
 	struct ieee80211_vif *vif = priv->vif;
 	struct iwl_host_cmd hcmd = {
 		.id = REPLY_CHANNEL_SWITCH,
@@ -293,10 +298,10 @@ static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
 	cmd.band = priv->band == IEEE80211_BAND_2GHZ;
 	ch = ch_switch->channel->hw_value;
 	IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
-		priv->active_rxon.channel, ch);
+		      ctx->active.channel, ch);
 	cmd.channel = cpu_to_le16(ch);
-	cmd.rxon_flags = priv->staging_rxon.flags;
-	cmd.rxon_filter_flags = priv->staging_rxon.filter_flags;
+	cmd.rxon_flags = ctx->staging.flags;
+	cmd.rxon_filter_flags = ctx->staging.filter_flags;
 	switch_count = ch_switch->count;
 	tsf_low = ch_switch->timestamp & 0x0ffffffff;
 	/*
@@ -331,7 +336,7 @@ static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
 		cmd.expect_beacon = is_channel_radar(ch_info);
 	else {
 		IWL_ERR(priv, "invalid channel switch from %u to %u\n",
-			priv->active_rxon.channel, ch);
+			ctx->active.channel, ch);
 		return -EFAULT;
 	}
 	priv->switch_rxon.channel = cmd.channel;

drivers/net/wireless/iwlwifi/iwl-6000.c

@@ -198,13 +198,18 @@ static int iwl6000_hw_set_hw_params(struct iwl_priv *priv)
 static int iwl6000_hw_channel_switch(struct iwl_priv *priv,
 				     struct ieee80211_channel_switch *ch_switch)
 {
+	/*
+	 * MULTI-FIXME
+	 * See iwl_mac_channel_switch.
+	 */
+	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 	struct iwl6000_channel_switch_cmd cmd;
 	const struct iwl_channel_info *ch_info;
 	u32 switch_time_in_usec, ucode_switch_time;
 	u16 ch;
 	u32 tsf_low;
 	u8 switch_count;
-	u16 beacon_interval = le16_to_cpu(priv->rxon_timing.beacon_interval);
+	u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
 	struct ieee80211_vif *vif = priv->vif;
 	struct iwl_host_cmd hcmd = {
 		.id = REPLY_CHANNEL_SWITCH,
@@ -216,10 +221,10 @@ static int iwl6000_hw_channel_switch(struct iwl_priv *priv,
 	cmd.band = priv->band == IEEE80211_BAND_2GHZ;
 	ch = ch_switch->channel->hw_value;
 	IWL_DEBUG_11H(priv, "channel switch from %u to %u\n",
-		      priv->active_rxon.channel, ch);
+		      ctx->active.channel, ch);
 	cmd.channel = cpu_to_le16(ch);
-	cmd.rxon_flags = priv->staging_rxon.flags;
-	cmd.rxon_filter_flags = priv->staging_rxon.filter_flags;
+	cmd.rxon_flags = ctx->staging.flags;
+	cmd.rxon_filter_flags = ctx->staging.filter_flags;
 	switch_count = ch_switch->count;
 	tsf_low = ch_switch->timestamp & 0x0ffffffff;
 	/*
@@ -254,7 +259,7 @@ static int iwl6000_hw_channel_switch(struct iwl_priv *priv,
 		cmd.expect_beacon = is_channel_radar(ch_info);
 	else {
 		IWL_ERR(priv, "invalid channel switch from %u to %u\n",
-			priv->active_rxon.channel, ch);
+			ctx->active.channel, ch);
 		return -EFAULT;
 	}
 	priv->switch_rxon.channel = cmd.channel;

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

@@ -625,7 +625,7 @@ void iwl_sensitivity_calibration(struct iwl_priv *priv, void *resp)
 
 	data = &(priv->sensitivity_data);
 
-	if (!iwl_is_associated(priv)) {
+	if (!iwl_is_any_associated(priv)) {
 		IWL_DEBUG_CALIB(priv, "<< - not associated\n");
 		return;
 	}
@@ -763,6 +763,12 @@ void iwl_chain_noise_calibration(struct iwl_priv *priv, void *stat_resp)
 	unsigned long flags;
 	struct statistics_rx_non_phy *rx_info;
 	u8 first_chain;
+	/*
+	 * MULTI-FIXME:
+	 * When we support multiple interfaces on different channels,
+	 * this must be modified/fixed.
+	 */
+	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 
 	if (priv->disable_chain_noise_cal)
 		return;
@@ -793,8 +799,8 @@ void iwl_chain_noise_calibration(struct iwl_priv *priv, void *stat_resp)
 		return;
 	}
 
-	rxon_band24 = !!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK);
-	rxon_chnum = le16_to_cpu(priv->staging_rxon.channel);
+	rxon_band24 = !!(ctx->staging.flags & RXON_FLG_BAND_24G_MSK);
+	rxon_chnum = le16_to_cpu(ctx->staging.channel);
 	if (priv->cfg->bt_statistics) {
 		stat_band24 = !!(((struct iwl_bt_notif_statistics *)
 				 stat_resp)->flag &

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

@@ -37,12 +37,13 @@
 #include "iwl-io.h"
 #include "iwl-agn.h"
 
-int iwlagn_send_rxon_assoc(struct iwl_priv *priv)
+int iwlagn_send_rxon_assoc(struct iwl_priv *priv,
+			   struct iwl_rxon_context *ctx)
 {
 	int ret = 0;
 	struct iwl5000_rxon_assoc_cmd rxon_assoc;
-	const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
-	const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
+	const struct iwl_rxon_cmd *rxon1 = &ctx->staging;
+	const struct iwl_rxon_cmd *rxon2 = &ctx->active;
 
 	if ((rxon1->flags == rxon2->flags) &&
 	    (rxon1->filter_flags == rxon2->filter_flags) &&
@@ -60,21 +61,21 @@ int iwlagn_send_rxon_assoc(struct iwl_priv *priv)
 		return 0;
 	}
 
-	rxon_assoc.flags = priv->staging_rxon.flags;
-	rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
-	rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
-	rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
+	rxon_assoc.flags = ctx->staging.flags;
+	rxon_assoc.filter_flags = ctx->staging.filter_flags;
+	rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates;
+	rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates;
 	rxon_assoc.reserved1 = 0;
 	rxon_assoc.reserved2 = 0;
 	rxon_assoc.reserved3 = 0;
 	rxon_assoc.ofdm_ht_single_stream_basic_rates =
-	    priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
+	    ctx->staging.ofdm_ht_single_stream_basic_rates;
 	rxon_assoc.ofdm_ht_dual_stream_basic_rates =
-	    priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
-	rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
+	    ctx->staging.ofdm_ht_dual_stream_basic_rates;
+	rxon_assoc.rx_chain_select_flags = ctx->staging.rx_chain;
 	rxon_assoc.ofdm_ht_triple_stream_basic_rates =
-		 priv->staging_rxon.ofdm_ht_triple_stream_basic_rates;
-	rxon_assoc.acquisition_data = priv->staging_rxon.acquisition_data;
+		 ctx->staging.ofdm_ht_triple_stream_basic_rates;
+	rxon_assoc.acquisition_data = ctx->staging.acquisition_data;
 
 	ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC,
 				     sizeof(rxon_assoc), &rxon_assoc, NULL);
@@ -184,7 +185,7 @@ static void iwlagn_chain_noise_reset(struct iwl_priv *priv)
 	int ret;
 
 	if ((data->state == IWL_CHAIN_NOISE_ALIVE) &&
-	     iwl_is_associated(priv)) {
+	    iwl_is_any_associated(priv)) {
 		struct iwl_calib_chain_noise_reset_cmd cmd;
 
 		/* clear data for chain noise calibration algorithm */

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

@@ -1232,7 +1232,7 @@ void iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
 	scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
 	scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
 
-	if (iwl_is_associated(priv)) {
+	if (iwl_is_any_associated(priv)) {
 		u16 interval = 0;
 		u32 extra;
 		u32 suspend_time = 100;
@@ -1289,7 +1289,9 @@ void iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
 	switch (priv->scan_band) {
 	case IEEE80211_BAND_2GHZ:
 		scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
-		chan_mod = le32_to_cpu(priv->active_rxon.flags & RXON_FLG_CHANNEL_MODE_MSK)
+		chan_mod = le32_to_cpu(
+			priv->contexts[IWL_RXON_CTX_BSS].active.flags &
+						RXON_FLG_CHANNEL_MODE_MSK)
 				       >> RXON_FLG_CHANNEL_MODE_POS;
 		if (chan_mod == CHANNEL_MODE_PURE_40) {
 			rate = IWL_RATE_6M_PLCP;

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

@@ -416,18 +416,26 @@ static void iwl_advance_tt_handler(struct iwl_priv *priv, s32 temp, bool force)
 	/* stop ct_kill_waiting_tm timer */
 	del_timer_sync(&priv->thermal_throttle.ct_kill_waiting_tm);
 	if (changed) {
-		struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
-
 		if (tt->state >= IWL_TI_1) {
 			/* force PI = IWL_POWER_INDEX_5 in the case of TI > 0 */
 			tt->tt_power_mode = IWL_POWER_INDEX_5;
-			if (!iwl_ht_enabled(priv))
+
+			if (!iwl_ht_enabled(priv)) {
+				struct iwl_rxon_context *ctx;
+
+				for_each_context(priv, ctx) {
+					struct iwl_rxon_cmd *rxon;
+
+					rxon = &ctx->staging;
+
 					/* disable HT */
-				rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
+					rxon->flags &= ~(
+						RXON_FLG_CHANNEL_MODE_MSK |
 						RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
 						RXON_FLG_HT40_PROT_MSK |
 						RXON_FLG_HT_PROT_MSK);
-			else {
+				}
+			} else {
 				/* check HT capability and set
 				 * according to the system HT capability
 				 * in case get disabled before */

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

@@ -224,7 +224,8 @@ int iwlagn_manage_ibss_station(struct iwl_priv *priv,
 			       struct ieee80211_vif *vif, bool add);
 
 /* hcmd */
-int iwlagn_send_rxon_assoc(struct iwl_priv *priv);
+int iwlagn_send_rxon_assoc(struct iwl_priv *priv,
+			   struct iwl_rxon_context *ctx);
 int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant);
 
 /* bt coex */

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

@@ -88,9 +88,10 @@ struct iwl_cmd;
 #define IWL_CMD(x) case x: return #x
 
 struct iwl_hcmd_ops {
-	int (*rxon_assoc)(struct iwl_priv *priv);
-	int (*commit_rxon)(struct iwl_priv *priv);
-	void (*set_rxon_chain)(struct iwl_priv *priv);
+	int (*rxon_assoc)(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
+	int (*commit_rxon)(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
+	void (*set_rxon_chain)(struct iwl_priv *priv,
+			       struct iwl_rxon_context *ctx);
 	int (*set_tx_ant)(struct iwl_priv *priv, u8 valid_tx_ant);
 	void (*send_bt_config)(struct iwl_priv *priv);
 };
@@ -374,12 +375,15 @@ void iwl_activate_qos(struct iwl_priv *priv);
 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
 		    const struct ieee80211_tx_queue_params *params);
 int iwl_mac_tx_last_beacon(struct ieee80211_hw *hw);
-void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt);
-int iwl_check_rxon_cmd(struct iwl_priv *priv);
-int iwl_full_rxon_required(struct iwl_priv *priv);
-void iwl_set_rxon_chain(struct iwl_priv *priv);
-int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch);
+void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
+			   int hw_decrypt);
+int iwl_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
+int iwl_full_rxon_required(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
+void iwl_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
+int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch,
+			 struct iwl_rxon_context *ctx);
 void iwl_set_flags_for_band(struct iwl_priv *priv,
+			    struct iwl_rxon_context *ctx,
 			    enum ieee80211_band band,
 			    struct ieee80211_vif *vif);
 u8 iwl_get_single_channel_number(struct iwl_priv *priv,
@@ -400,7 +404,7 @@ void iwl_bss_info_changed(struct ieee80211_hw *hw,
 				     struct ieee80211_vif *vif,
 				     struct ieee80211_bss_conf *bss_conf,
 				     u32 changes);
-int iwl_commit_rxon(struct iwl_priv *priv);
+int iwl_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
 int iwl_mac_add_interface(struct ieee80211_hw *hw,
 			  struct ieee80211_vif *vif);
 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
@@ -632,9 +636,11 @@ int iwl_dump_nic_event_log(struct iwl_priv *priv,
 void iwl_dump_csr(struct iwl_priv *priv);
 int iwl_dump_fh(struct iwl_priv *priv, char **buf, bool display);
 #ifdef CONFIG_IWLWIFI_DEBUG
-void iwl_print_rx_config_cmd(struct iwl_priv *priv);
+void iwl_print_rx_config_cmd(struct iwl_priv *priv,
+			     struct iwl_rxon_context *ctx);
 #else
-static inline void iwl_print_rx_config_cmd(struct iwl_priv *priv)
+static inline void iwl_print_rx_config_cmd(struct iwl_priv *priv,
+					   struct iwl_rxon_context *ctx)
 {
 }
 #endif
@@ -720,13 +726,15 @@ 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);
-static inline int iwl_send_rxon_assoc(struct iwl_priv *priv)
+static inline int iwl_send_rxon_assoc(struct iwl_priv *priv,
+				      struct iwl_rxon_context *ctx)
 {
-	return priv->cfg->ops->hcmd->rxon_assoc(priv);
+	return priv->cfg->ops->hcmd->rxon_assoc(priv, ctx);
 }
-static inline int iwlcore_commit_rxon(struct iwl_priv *priv)
+static inline int iwlcore_commit_rxon(struct iwl_priv *priv,
+				      struct iwl_rxon_context *ctx)
 {
-	return priv->cfg->ops->hcmd->commit_rxon(priv);
+	return priv->cfg->ops->hcmd->commit_rxon(priv, ctx);
 }
 static inline void iwlcore_config_ap(struct iwl_priv *priv,
 				     struct ieee80211_vif *vif)

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

@@ -730,7 +730,7 @@ static ssize_t iwl_dbgfs_disable_ht40_write(struct file *file,
 		return -EFAULT;
 	if (sscanf(buf, "%d", &ht40) != 1)
 		return -EFAULT;
-	if (!iwl_is_associated(priv))
+	if (!iwl_is_any_associated(priv))
 		priv->disable_ht40 = ht40 ? true : false;
 	else {
 		IWL_ERR(priv, "Sta associated with AP - "
@@ -1319,7 +1319,8 @@ static ssize_t iwl_dbgfs_rxon_flags_read(struct file *file,
 	int len = 0;
 	char buf[20];
 
-	len = sprintf(buf, "0x%04X\n", le32_to_cpu(priv->active_rxon.flags));
+	len = sprintf(buf, "0x%04X\n",
+		le32_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.flags));
 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 }
 
@@ -1332,7 +1333,7 @@ static ssize_t iwl_dbgfs_rxon_filter_flags_read(struct file *file,
 	char buf[20];
 
 	len = sprintf(buf, "0x%04X\n",
-		      le32_to_cpu(priv->active_rxon.filter_flags));
+		le32_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.filter_flags));
 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 }
 

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

@@ -519,6 +519,7 @@ struct iwl_station_priv {
  * space for us to put data into.
  */
 struct iwl_vif_priv {
+	struct iwl_rxon_context *ctx;
 	u8 ibss_bssid_sta_id;
 };
 
@@ -1097,6 +1098,26 @@ struct iwl_force_reset {
  */
 #define IWLAGN_EXT_BEACON_TIME_POS	22
 
+enum iwl_rxon_context_id {
+	IWL_RXON_CTX_BSS,
+
+	NUM_IWL_RXON_CTX
+};
+
+struct iwl_rxon_context {
+	enum iwl_rxon_context_id ctxid;
+	/*
+	 * We declare this const so it can only be
+	 * changed via explicit cast within the
+	 * routines that actually update the physical
+	 * hardware.
+	 */
+	const struct iwl_rxon_cmd active;
+	struct iwl_rxon_cmd staging;
+
+	struct iwl_rxon_time_cmd timing;
+};
+
 struct iwl_priv {
 
 	/* ieee device used by generic ieee processing code */
@@ -1173,6 +1194,9 @@ struct iwl_priv {
 	u32  hw_wa_rev;
 	u8   rev_id;
 
+	/* microcode/device supports multiple contexts */
+	u8 valid_contexts;
+
 	/* EEPROM MAC addresses */
 	struct mac_address addresses[2];
 
@@ -1190,15 +1214,7 @@ struct iwl_priv {
 	u8 ucode_write_complete;	/* the image write is complete */
 	char firmware_name[25];
 
-
-	struct iwl_rxon_time_cmd rxon_timing;
-
-	/* We declare this const so it can only be
-	 * changed via explicit cast within the
-	 * routines that actually update the physical
-	 * hardware */
-	const struct iwl_rxon_cmd active_rxon;
-	struct iwl_rxon_cmd staging_rxon;
+	struct iwl_rxon_context contexts[NUM_IWL_RXON_CTX];
 
 	struct iwl_switch_rxon switch_rxon;
 
@@ -1490,10 +1506,34 @@ static inline struct ieee80211_hdr *iwl_tx_queue_get_hdr(struct iwl_priv *priv,
 	return NULL;
 }
 
+static inline struct iwl_rxon_context *
+iwl_rxon_ctx_from_vif(struct ieee80211_vif *vif)
+{
+	struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
+
+	return vif_priv->ctx;
+}
+
+#define for_each_context(priv, ctx)				\
+	for (ctx = &priv->contexts[IWL_RXON_CTX_BSS];		\
+	     ctx < &priv->contexts[NUM_IWL_RXON_CTX]; ctx++)	\
+		if (priv->valid_contexts & BIT(ctx->ctxid))
+
+static inline int iwl_is_associated(struct iwl_priv *priv,
+				    enum iwl_rxon_context_id ctxid)
+{
+	return (priv->contexts[ctxid].active.filter_flags &
+			RXON_FILTER_ASSOC_MSK) ? 1 : 0;
+}
+
+static inline int iwl_is_any_associated(struct iwl_priv *priv)
+{
+	return iwl_is_associated(priv, IWL_RXON_CTX_BSS);
+}
 
-static inline int iwl_is_associated(struct iwl_priv *priv)
+static inline int iwl_is_associated_ctx(struct iwl_rxon_context *ctx)
 {
-	return (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
+	return (ctx->active.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
 }
 
 static inline int is_channel_valid(const struct iwl_channel_info *ch_info)

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

@@ -228,7 +228,7 @@ void iwl_recover_from_statistics(struct iwl_priv *priv,
 {
 	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 		return;
-	if (iwl_is_associated(priv)) {
+	if (iwl_is_any_associated(priv)) {
 		if (priv->cfg->ops->lib->check_ack_health) {
 			if (!priv->cfg->ops->lib->check_ack_health(
 			    priv, pkt)) {
@@ -266,7 +266,12 @@ int iwl_set_decrypted_flag(struct iwl_priv *priv,
 {
 	u16 fc = le16_to_cpu(hdr->frame_control);
 
-	if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
+	/*
+	 * All contexts have the same setting here due to it being
+	 * a module parameter, so OK to check any context.
+	 */
+	if (priv->contexts[IWL_RXON_CTX_BSS].active.filter_flags &
+						RXON_FILTER_DIS_DECRYPT_MSK)
 		return 0;
 
 	if (!(fc & IEEE80211_FCTL_PROTECTED))

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

@@ -290,7 +290,8 @@ u16 iwl_get_passive_dwell_time(struct iwl_priv *priv,
 	    IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
 	    IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
 
-	if (iwl_is_associated(priv)) {
+	if (iwl_is_any_associated(priv)) {
+		/* TODO: should use minimum of all contexts */
 		/* If we're associated, we clamp the maximum passive
 		 * dwell time to be 98% of the beacon interval (minus
 		 * 2 * channel tune time) */
@@ -527,6 +528,7 @@ static void iwl_bg_scan_completed(struct work_struct *work)
 	    container_of(work, struct iwl_priv, scan_completed);
 	bool internal = false;
 	bool scan_completed = false;
+	struct iwl_rxon_context *ctx;
 
 	IWL_DEBUG_SCAN(priv, "SCAN complete scan\n");
 
@@ -557,9 +559,8 @@ static void iwl_bg_scan_completed(struct work_struct *work)
 	 * Since setting the RXON may have been deferred while
 	 * performing the scan, fire one off if needed
 	 */
-	if (memcmp(&priv->active_rxon,
-		   &priv->staging_rxon, sizeof(priv->staging_rxon)))
-		iwlcore_commit_rxon(priv);
+	for_each_context(priv, ctx)
+		iwlcore_commit_rxon(priv, ctx);
 
  out:
 	mutex_unlock(&priv->mutex);

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

@@ -1153,12 +1153,16 @@ static bool is_lq_table_valid(struct iwl_priv *priv,
 {
 	int i;
 	struct iwl_ht_config *ht_conf = &priv->current_ht_config;
+#if !TODO
+	struct iwl_rxon_context *ctx =
+			&priv->contexts[IWL_RXON_CTX_BSS];
+#endif
 
 	if (ht_conf->is_ht)
 		return true;
 
 	IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n",
-		       priv->active_rxon.channel);
+		       ctx->active.channel);
 	for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
 		if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) {
 			IWL_DEBUG_INFO(priv,