netdev - [RFC net-next 3/3] net: dsa: tag_qca: set offload_fwd

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Date:   Sat,  7 Aug 2021 20:07:26 +0800
From:   DENG Qingfang <dqfext@...il.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        netdev@...r.kernel.org (open list:NETWORKING DRIVERS),
        linux-kernel@...r.kernel.org (open list)
Cc:     Ansuel Smith <ansuelsmth@...il.com>,
        Jonathan McDowell <noodles@...th.li>,
        Michal Vokáč <vokac.m@...il.com>,
        Christian Lamparter <chunkeey@...il.com>,
        Nishka Dasgupta <nishkadg.linux@...il.com>,
        Xiaofei Shen <xiaofeis@...eaurora.org>,
        John Crispin <john@...ozen.org>,
        Stefan Lippers-Hollmann <s.l-h@....de>,
        Hannu Nyman <hannu.nyman@....fi>,
        Imran Khan <gururug@...il.com>,
        Frank Wunderlich <frank-w@...lic-files.de>,
        Nick Lowe <nick.lowe@...il.com>,
        André Valentin <avalentin@....kalnet.hooya.de>
Subject: [RFC net-next 3/3] net: dsa: tag_qca: set offload_fwd_mark

As we offload flooding and forwarding, set offload_fwd_mark according to
Atheros header's type.

Signed-off-by: DENG Qingfang <dqfext@...il.com>
---
 net/dsa/tag_qca.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/net/dsa/tag_qca.c b/net/dsa/tag_qca.c
index 6e3136990491..ee5c1fdfef47 100644
--- a/net/dsa/tag_qca.c
+++ b/net/dsa/tag_qca.c
@@ -50,7 +50,7 @@ static struct sk_buff *qca_tag_xmit(struct sk_buff *skb, struct net_device *dev)
 
 static struct sk_buff *qca_tag_rcv(struct sk_buff *skb, struct net_device *dev)
 {
-	u8 ver;
+	u8 ver, type;
 	u16  hdr;
 	int port;
 	__be16 *phdr;
@@ -82,6 +82,15 @@ static struct sk_buff *qca_tag_rcv(struct sk_buff *skb, struct net_device *dev)
 	if (!skb->dev)
 		return NULL;
 
+	type = (hdr & QCA_HDR_RECV_TYPE_MASK) >> QCA_HDR_RECV_TYPE_S;
+	switch (type) {
+	case 0x00: /* Normal packet */
+	case 0x19: /* Flooding to CPU */
+	case 0x1a: /* Forwarding to CPU */
+		dsa_default_offload_fwd_mark(skb);
+		break;
+	}
+
 	return skb;
 }
 
-- 
2.25.1