From: David Lebrun
Date: Wed, 23 Aug 2017 17:32:00 +0200
> + case SEG6_IPTUN_MODE_L2ENCAP:
> + head = sizeof(struct ipv6hdr) + 14;
> + break;
This 14 is ETH_HLEN.
>
> + if (pskb_expand_head(skb, skb->mac_len, 0, GFP_ATOMIC) < 0)
> +
This patch implements the L2 frame encapsulation mechanism, referred to
as T.Encaps.L2 in the SRv6 specifications [1].
A new type of SRv6 tunnel mode is added (SEG6_IPTUN_MODE_L2ENCAP). It only
accepts packets with an existing MAC header (i.e., it will not work for
locally generated packets). The
