From ae30bdaa4c2747e96c880d909b48484f41bfd51d Mon Sep 17 00:00:00 2001
From: Ganapathi Bhat <gbhat@marvell.com>
Date: Sat, 26 May 2018 02:09:22 +0530
Subject: [PATCH] mwifiex: skip sending GT_REKEY_OFFLOAD_CFG if firmware has no support
Git-commit: ae30bdaa4c2747e96c880d909b48484f41bfd51d
Patch-mainline: v4.18-rc1
References: FATE#326294

If firmware does not support embedded supplicant, then it in turn
will not support GT rekey offloading. If this is the case, then
driver must not advertise WOWLAN flags related to GTK rekey and
it must also skip sending the GT_REKEY_OFFLOAD_CFG command.

Signed-off-by: Shrenik Shikhare <shrenik@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Ganapathi Bhat <gbhat@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 .../net/wireless/marvell/mwifiex/cfg80211.c    | 18 +++++++++++++++++-
 drivers/net/wireless/marvell/mwifiex/fw.h      |  1 +
 .../net/wireless/marvell/mwifiex/sta_event.c   |  3 +++
 3 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index 54a2297010d2..d04a59903e82 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -3555,6 +3555,9 @@ static int mwifiex_set_rekey_data(struct wiphy *wiphy, struct net_device *dev,
 {
 	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 
+	if (!ISSUPP_FIRMWARE_SUPPLICANT(priv->adapter->fw_cap_info))
+		return -EOPNOTSUPP;
+
 	return mwifiex_send_cmd(priv, HostCmd_CMD_GTK_REKEY_OFFLOAD_CFG,
 				HostCmd_ACT_GEN_SET, 0, data, true);
 }
@@ -4190,6 +4193,16 @@ static const struct wiphy_wowlan_support mwifiex_wowlan_support = {
 	.max_pkt_offset = MWIFIEX_MAX_OFFSET_LEN,
 	.max_nd_match_sets = MWIFIEX_MAX_ND_MATCH_SETS,
 };
+
+static const struct wiphy_wowlan_support mwifiex_wowlan_support_no_gtk = {
+	.flags = WIPHY_WOWLAN_MAGIC_PKT | WIPHY_WOWLAN_DISCONNECT |
+		 WIPHY_WOWLAN_NET_DETECT,
+	.n_patterns = MWIFIEX_MEF_MAX_FILTERS,
+	.pattern_min_len = 1,
+	.pattern_max_len = MWIFIEX_MAX_PATTERN_LEN,
+	.max_pkt_offset = MWIFIEX_MAX_OFFSET_LEN,
+	.max_nd_match_sets = MWIFIEX_MAX_ND_MATCH_SETS,
+};
 #endif
 
 static bool mwifiex_is_valid_alpha2(const char *alpha2)
@@ -4308,7 +4321,10 @@ int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
 				WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
 
 #ifdef CONFIG_PM
-	wiphy->wowlan = &mwifiex_wowlan_support;
+	if (ISSUPP_FIRMWARE_SUPPLICANT(priv->adapter->fw_cap_info))
+		wiphy->wowlan = &mwifiex_wowlan_support;
+	else
+		wiphy->wowlan = &mwifiex_wowlan_support_no_gtk;
 #endif
 
 	wiphy->coalesce = &mwifiex_coalesce_support;
diff --git a/drivers/net/wireless/marvell/mwifiex/fw.h b/drivers/net/wireless/marvell/mwifiex/fw.h
index c5dc518f768b..b73f99dc5a72 100644
--- a/drivers/net/wireless/marvell/mwifiex/fw.h
+++ b/drivers/net/wireless/marvell/mwifiex/fw.h
@@ -249,6 +249,7 @@ enum MWIFIEX_802_11_PRIVACY_FILTER {
 #define ISSUPP_SDIO_SPA_ENABLED(FwCapInfo) (FwCapInfo & BIT(16))
 #define ISSUPP_ADHOC_ENABLED(FwCapInfo) (FwCapInfo & BIT(25))
 #define ISSUPP_RANDOM_MAC(FwCapInfo) (FwCapInfo & BIT(27))
+#define ISSUPP_FIRMWARE_SUPPLICANT(FwCapInfo) (FwCapInfo & BIT(21))
 
 #define MWIFIEX_DEF_HT_CAP	(IEEE80211_HT_CAP_DSSSCCK40 | \
 				 (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT) | \
diff --git a/drivers/net/wireless/marvell/mwifiex/sta_event.c b/drivers/net/wireless/marvell/mwifiex/sta_event.c
index 93dfb76cd8a6..03a6492662ca 100644
--- a/drivers/net/wireless/marvell/mwifiex/sta_event.c
+++ b/drivers/net/wireless/marvell/mwifiex/sta_event.c
@@ -241,6 +241,9 @@ void mwifiex_reset_connect_state(struct mwifiex_private *priv, u16 reason_code,
 	if (netif_carrier_ok(priv->netdev))
 		netif_carrier_off(priv->netdev);
 
+	if (!ISSUPP_FIRMWARE_SUPPLICANT(priv->adapter->fw_cap_info))
+		return;
+
 	mwifiex_send_cmd(priv, HostCmd_CMD_GTK_REKEY_OFFLOAD_CFG,
 			 HostCmd_ACT_GEN_REMOVE, 0, NULL, false);
 }
-- 
2.19.2