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net: dsa: Implement flow_dissect callback for tag_dsa.

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RPS not work for DSA devices since the 'skb_get_hash'
will always get the invalid hash for dsa tagged packets.

"[PATCH] tag_mtk: add flow_dissect callback to the ops struct"
introduced the flow_dissect callback to get the right hash for
MTK tagged packet. Tag_dsa and tag_edsa  also need to implement
the callback.

Signed-off-by: Rundong Ge <rdong.ge@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rundong Ge 2019-02-16 08:35:24 +00:00 committed by David S. Miller
parent 6e07902f56
commit 57fd967838
2 changed files with 18 additions and 0 deletions
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9
net/dsa/tag_dsa.c
View file

@ -146,8 +146,17 @@ static struct sk_buff *dsa_rcv(struct sk_buff *skb, struct net_device *dev,
return skb;
}
static int dsa_tag_flow_dissect(const struct sk_buff *skb, __be16 *proto,
int *offset)
{
*offset = 4;
*proto = ((__be16 *)skb->data)[1];
return 0;
}
const struct dsa_device_ops dsa_netdev_ops = {
.xmit = dsa_xmit,
.rcv = dsa_rcv,
.flow_dissect = dsa_tag_flow_dissect,
.overhead = DSA_HLEN,
};

9
net/dsa/tag_edsa.c
View file

@ -165,8 +165,17 @@ static struct sk_buff *edsa_rcv(struct sk_buff *skb, struct net_device *dev,
return skb;
}
static int edsa_tag_flow_dissect(const struct sk_buff *skb, __be16 *proto,
int *offset)
{
*offset = 8;
*proto = ((__be16 *)skb->data)[3];
return 0;
}
const struct dsa_device_ops edsa_netdev_ops = {
.xmit = edsa_xmit,
.rcv = edsa_rcv,
.flow_dissect = edsa_tag_flow_dissect,
.overhead = EDSA_HLEN,
};