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net: dsa: xrs700x: add HSR offloading support

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Add offloading for HSR/PRP (IEC 62439-3) tag insertion, tag removal
forwarding and duplication supported by the xrs7000 series switches.

Only HSR v1 and PRP v1 are supported by the xrs7000 series switches (HSR
v0 is not).

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
George McCollister
2021-02-09 19:02:13 -06:00
committed by David S. Miller
parent 18596f504a
commit bd62e6f5e6
3 changed files with 132 additions and 1 deletions
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7
net/dsa/tag_xrs700x.c
View File

@@ -11,12 +11,17 @@
static struct sk_buff *xrs700x_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct dsa_port *dp = dsa_slave_to_port(dev);
struct dsa_port *partner, *dp = dsa_slave_to_port(dev);
u8 *trailer;
trailer = skb_put(skb, 1);
trailer[0] = BIT(dp->index);
if (dp->hsr_dev)
dsa_hsr_foreach_port(partner, dp->ds, dp->hsr_dev)
if (partner != dp)
trailer[0] |= BIT(partner->index);
return skb;
}