wl12xx: configure rate policy for p2p operations

p2p packets should go out only with OFDM rates.

Configure a new rate policy that will (later) be used
during p2p_find (when the p2p_cli / p2p_go interfaces
are in use, we won't have to use this policy, as
the configured rates should already be OFDM-only).

Additionally, update CONF_TX_MAX_RATE_CLASSES to reflect
the current value from the fw api.
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/wl12xx/acx.c

@@ -777,7 +777,23 @@ int wl1271_acx_sta_rate_policies(struct wl1271 *wl)
 	acx->rate_policy.long_retry_limit = c->long_retry_limit;
 	acx->rate_policy.aflags = c->aflags;
 
+	ret = wl1271_cmd_configure(wl, ACX_RATE_POLICY, acx, sizeof(*acx));
+	if (ret < 0) {
+		wl1271_warning("Setting of rate policies failed: %d", ret);
+		goto out;
+	}
 
+	/*
+	 * configure one rate class for basic p2p operations.
+	 * (p2p packets should always go out with OFDM rates, even
+	 * if we are currently connected to 11b AP)
+	 */
+	acx->rate_policy_idx = cpu_to_le32(ACX_TX_BASIC_RATE_P2P);
+	acx->rate_policy.enabled_rates =
+				cpu_to_le32(CONF_TX_RATE_MASK_BASIC_P2P);
+	acx->rate_policy.short_retry_limit = c->short_retry_limit;
+	acx->rate_policy.long_retry_limit = c->long_retry_limit;
+	acx->rate_policy.aflags = c->aflags;
 
 	ret = wl1271_cmd_configure(wl, ACX_RATE_POLICY, acx, sizeof(*acx));
 	if (ret < 0) {

drivers/net/wireless/wl12xx/acx.h

@@ -656,6 +656,7 @@ struct acx_rate_class {
 
 #define ACX_TX_BASIC_RATE      0
 #define ACX_TX_AP_FULL_RATE    1
+#define ACX_TX_BASIC_RATE_P2P  2
 #define ACX_TX_AP_MODE_MGMT_RATE 4
 #define ACX_TX_AP_MODE_BCST_RATE 5
 struct acx_rate_policy {

drivers/net/wireless/wl12xx/conf.h

@@ -416,13 +416,17 @@ struct conf_rx_settings {
 	u8 queue_type;
 };
 
-#define CONF_TX_MAX_RATE_CLASSES       8
+#define CONF_TX_MAX_RATE_CLASSES       10
 
 #define CONF_TX_RATE_MASK_UNSPECIFIED  0
 #define CONF_TX_RATE_MASK_BASIC        (CONF_HW_BIT_RATE_1MBPS | \
 					CONF_HW_BIT_RATE_2MBPS)
 #define CONF_TX_RATE_RETRY_LIMIT       10
 
+/* basic rates for p2p operations (probe req/resp, etc.) */
+#define CONF_TX_RATE_MASK_BASIC_P2P    (CONF_HW_BIT_RATE_6MBPS | \
+	CONF_HW_BIT_RATE_12MBPS | CONF_HW_BIT_RATE_24MBPS)
+
 /*
  * Rates supported for data packets when operating as AP. Note the absence
  * of the 22Mbps rate. There is a FW limitation on 12 rates so we must drop