mwifiex: add tdls_mgmt handler support

This patch adds support for TDLS management frames transmit
handler. mwifiex driver supports TDLS with external support,
i.e. expects user space application to form TDLS frames.
Same is advertised to cfg80211 during registration.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 81 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index c6606288c61e..2968af273ef9 100644
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -2594,6 +2594,81 @@ static int mwifiex_cfg80211_set_coalesce(struct wiphy *wiphy,
 				     HostCmd_ACT_GEN_SET, 0, &coalesce_cfg);
 }
 
+/* cfg80211 ops handler for tdls_mgmt.
+ * Function prepares TDLS action frame packets and forwards them to FW
+ */
+static int
+mwifiex_cfg80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
+			   u8 *peer, u8 action_code, u8 dialog_token,
+			   u16 status_code, const u8 *extra_ies,
+			   size_t extra_ies_len)
+{
+	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
+	int ret;
+
+	if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
+		return -ENOTSUPP;
+
+	/* make sure we are in station mode and connected */
+	if (!(priv->bss_type == MWIFIEX_BSS_TYPE_STA && priv->media_connected))
+		return -ENOTSUPP;
+
+	switch (action_code) {
+	case WLAN_TDLS_SETUP_REQUEST:
+		dev_dbg(priv->adapter->dev,
+			"Send TDLS Setup Request to %pM status_code=%d\n", peer,
+			 status_code);
+		ret = mwifiex_send_tdls_data_frame(priv, peer, action_code,
+						   dialog_token, status_code,
+						   extra_ies, extra_ies_len);
+		break;
+	case WLAN_TDLS_SETUP_RESPONSE:
+		dev_dbg(priv->adapter->dev,
+			"Send TDLS Setup Response to %pM status_code=%d\n",
+			peer, status_code);
+		ret = mwifiex_send_tdls_data_frame(priv, peer, action_code,
+						   dialog_token, status_code,
+						   extra_ies, extra_ies_len);
+		break;
+	case WLAN_TDLS_SETUP_CONFIRM:
+		dev_dbg(priv->adapter->dev,
+			"Send TDLS Confirm to %pM status_code=%d\n", peer,
+			status_code);
+		ret = mwifiex_send_tdls_data_frame(priv, peer, action_code,
+						   dialog_token, status_code,
+						   extra_ies, extra_ies_len);
+		break;
+	case WLAN_TDLS_TEARDOWN:
+		dev_dbg(priv->adapter->dev, "Send TDLS Tear down to %pM\n",
+			peer);
+		ret = mwifiex_send_tdls_data_frame(priv, peer, action_code,
+						   dialog_token, status_code,
+						   extra_ies, extra_ies_len);
+		break;
+	case WLAN_TDLS_DISCOVERY_REQUEST:
+		dev_dbg(priv->adapter->dev,
+			"Send TDLS Discovery Request to %pM\n", peer);
+		ret = mwifiex_send_tdls_data_frame(priv, peer, action_code,
+						   dialog_token, status_code,
+						   extra_ies, extra_ies_len);
+		break;
+	case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
+		dev_dbg(priv->adapter->dev,
+			"Send TDLS Discovery Response to %pM\n", peer);
+		ret = mwifiex_send_tdls_action_frame(priv, peer, action_code,
+						   dialog_token, status_code,
+						   extra_ies, extra_ies_len);
+		break;
+	default:
+		dev_warn(priv->adapter->dev,
+			 "Unknown TDLS mgmt/action frame %pM\n", peer);
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
 /* station cfg80211 operations */
 static struct cfg80211_ops mwifiex_cfg80211_ops = {
 	.add_virtual_intf = mwifiex_add_virtual_intf,
@@ -2629,6 +2704,7 @@ static struct cfg80211_ops mwifiex_cfg80211_ops = {
 	.set_wakeup = mwifiex_cfg80211_set_wakeup,
 #endif
 	.set_coalesce = mwifiex_cfg80211_set_coalesce,
+	.tdls_mgmt = mwifiex_cfg80211_tdls_mgmt,
 };
 
 #ifdef CONFIG_PM
@@ -2714,6 +2790,11 @@ int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
 			WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD |
 			WIPHY_FLAG_AP_UAPSD |
 			WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
+
+	if (ISSUPP_TDLS_ENABLED(adapter->fw_cap_info))
+		wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
+				WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
+
 	wiphy->regulatory_flags |=
 			REGULATORY_CUSTOM_REG |
 			REGULATORY_STRICT_REG;