On Wed, 13 Dec 2017 16:38:54 -0800 William Tu <u9012...@gmail.com> wrote:
> ERSPAN has two versions, v1 (type II) and v2 (type III). This patch > series add support for erspan v2 based on existing erspan v1 > implementation. The first patch refactors the existing erspan v1's > header structure, making it extensible to put additional v2's header. > The second and third patch introduces erspan v2's implementation to > ipv4 and ipv6 erspan, for both native mode and collect metadata mode. > Finally, test cases are added under the samples/bpf. > > Note: > ERSPAN version 2 has many features and this patch does not implement > all. One major use case of version 2 over version 1 is its timestamp > and direction. So the traffic collector is able to distinguish the > mirrorred traffic better. Other features such as SGT (security group > tag), FT (frame type) for carrying non-ethernet packet, and optional > subheader are not implemented yet. > > Example commandline for ERSPAN version 2: > ip link add dev ip6erspan11 type ip6erspan seq key 102 \ > local fc00:100::2 remote fc00:100::1 \ > erspan_ver 2 erspan_dir 1 erspan_hwid 17 > > The corresponding iproute2 patch: > https://marc.info/?l=linux-netdev&m=151321141525106&w=2 If this is accepted to net-next you will need to resubmit the iproute2 patch.
