Hi,
I'm doing tests with VLAN support in DSA and I noticed that the EDSA
frame is prepended with a 802.1q header once queued to the underlying
network device, in net/dsa/tag_edsa.c:
skb->dev = p->parent->dst->master_netdev;
dev_queue_xmit(skb);
This issue can be observed with the following dump:
curl -s http://ix.io/iIv | tcpdump -en -r -
I suspect that the DSA code must clear some VLAN flags in the skb
structure, in order to prevent the additional encapsulation by the lower
level. Does this make sense?
Thanks,
-v
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