[PATCH] ath10k: fix monitor vdev for receiving other bss frames

[Rajkumar Manoharan]

In order to receive other BSS entries in mesh mode, Monitor vdev
is created whenever filter flag is set with OTHER_BSS. Recently
it is root caused that setting promisc filter for Mesh interface
is causing performance and stability issues. To fix this issue,
firmware will configure appropriate rxfilters by default for mesh
vdev during vdev creation. This change fixes monitor vdev creation
based on firmware IE

Signed-off-by: Rajkumar Manoharan <rmanohar at qca.qualcomm.com>
---
 drivers/net/wireless/ath/ath10k/core.c | 1 +
 drivers/net/wireless/ath/ath10k/core.h | 7 +++++++
 drivers/net/wireless/ath/ath10k/mac.c  | 4 +++-
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index 7005e2a98726..b796be1d6318 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -326,6 +326,7 @@
 	[ATH10K_FW_FEATURE_PEER_FLOW_CONTROL] = "peer-flow-ctrl",
 	[ATH10K_FW_FEATURE_BTCOEX_PARAM] = "btcoex-param",
 	[ATH10K_FW_FEATURE_SKIP_NULL_FUNC_WAR] = "skip-null-func-war",
+	[ATH10K_FW_FEATURE_ALLOWS_MESH_BCAST] = "allows-mesh-bcast",
 };
 
 static unsigned int ath10k_core_get_fw_feature_str(char *buf,
diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h
index e8decfaba5b6..179e52fbad55 100644
--- a/drivers/net/wireless/ath/ath10k/core.h
+++ b/drivers/net/wireless/ath/ath10k/core.h
@@ -562,6 +562,13 @@ enum ath10k_fw_features {
 	 */
 	ATH10K_FW_FEATURE_SKIP_NULL_FUNC_WAR = 15,
 
+	/* Firmware allow other BSS mesh broadcast/multicast frames without
+	 * creating monitor interface. Appropriate rxfilters are programmed for
+	 * mesh vdev by firmware itself. This feature flags will be used for
+	 * not creating monitor vdev while configuring mesh node.
+	 */
+	ATH10K_FW_FEATURE_ALLOWS_MESH_BCAST = 16,
+
 	/* keep last */
 	ATH10K_FW_FEATURE_COUNT,
 };
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 717b2fad9a8a..56b8859d4a72 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -1167,7 +1167,9 @@ static bool ath10k_mac_monitor_vdev_is_needed(struct ath10k *ar)
 		return false;
 
 	return ar->monitor ||
-	       ar->filter_flags & FIF_OTHER_BSS ||
+	       (!test_bit(ATH10K_FW_FEATURE_ALLOWS_MESH_BCAST,
+			  ar->running_fw->fw_file.fw_features) &&
+		(ar->filter_flags & FIF_OTHER_BSS)) ||
 	       test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
 }
 
-- 
1.9.1