From 1db359946bd1602dd7a70ca461c7cfb3835ab270 Mon Sep 17 00:00:00 2001
From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Date: Mon, 18 Nov 2019 08:23:12 +0000
Subject: [PATCH] qtnfmac: signal that all packets coming from device are already flooded
Git-commit: 1db359946bd1602dd7a70ca461c7cfb3835ab270
Patch-mainline: v5.5-rc1
References: jsc#SLE-13430, bsc#1176741

Firmware floods all packets that need to be flooded (multicast, broadcast,
unknown unicast) as required. Tell kernel bridge subsystem it does not
need to flood packet itself by marking each incoming frame
with skb->offload_fwd_mark flag.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/wireless/quantenna/qtnfmac/core.c      |  3 +++
 drivers/net/wireless/quantenna/qtnfmac/switchdev.h | 24 ++++++++++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 drivers/net/wireless/quantenna/qtnfmac/switchdev.h

diff --git a/drivers/net/wireless/quantenna/qtnfmac/core.c b/drivers/net/wireless/quantenna/qtnfmac/core.c
index a709e378928d..f5aa2c547b94 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/core.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/core.c
@@ -12,6 +12,7 @@
 #include "cfg80211.h"
 #include "event.h"
 #include "util.h"
+#include "switchdev.h"
 
 #define QTNF_DMP_MAX_LEN 48
 #define QTNF_PRIMARY_VIF_IDX	0
@@ -866,6 +867,8 @@ struct net_device *qtnf_classify_skb(struct qtnf_bus *bus, struct sk_buff *skb)
 	}
 
 	__skb_trim(skb, skb->len - sizeof(*meta));
+	/* Firmware always handles packets that require flooding */
+	qtnfmac_switch_mark_skb_flooded(skb);
 
 out:
 	return ndev;
diff --git a/drivers/net/wireless/quantenna/qtnfmac/switchdev.h b/drivers/net/wireless/quantenna/qtnfmac/switchdev.h
new file mode 100644
index 000000000000..b962e670c4b0
--- /dev/null
+++ b/drivers/net/wireless/quantenna/qtnfmac/switchdev.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2019 Quantenna Communications. All rights reserved. */
+
+#ifndef QTNFMAC_SWITCHDEV_H_
+#define QTNFMAC_SWITCHDEV_H_
+
+#include <linux/skbuff.h>
+
+#ifdef CONFIG_NET_SWITCHDEV
+
+static inline void qtnfmac_switch_mark_skb_flooded(struct sk_buff *skb)
+{
+	skb->offload_fwd_mark = 1;
+}
+
+#else
+
+static inline void qtnfmac_switch_mark_skb_flooded(struct sk_buff *skb)
+{
+}
+
+#endif
+
+#endif /* QTNFMAC_SWITCHDEV_H_ */
-- 
2.16.4