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>

1 files changed, 28 insertions, 25 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c
index 8ccfcd08218d..f4aa229986ca 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.c
+++ b/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;