Re: [PATCHv2 net-next 0/2] gre: add sequence number for collect md mode.

[David Miller]

From: William Tu 
Date: Thu,  1 Mar 2018 13:49:56 -0800

> Currently GRE sequence number can only be used in native tunnel mode.
> The first patch adds sequence number support for gre collect
> metadata mode, and the second patch tests it using BPF.
> 
> RFC2890 defines GRE sequence number to be specific to the traffic
> flow identified by the key.  However, this patch does not implement
> per-key seqno.  The sequence number is shared in the same tunnel
> device. That is, different tunnel keys using the same collect_md
> tunnel share single sequence number.
> 
> A new BFP uapi tunnel flag 'BPF_F_SEQ_NUMBER' is added.
> --
> v1->v2:
>   rename BPF_F_GRE_SEQ to BPF_F_SEQ_NUMBER suggested by Daniel

Series applied, thank you.

[PATCHv2 net-next 0/2] gre: add sequence number for collect md mode.

[William Tu]

Currently GRE sequence number can only be used in native tunnel mode.
The first patch adds sequence number support for gre collect
metadata mode, and the second patch tests it using BPF.

RFC2890 defines GRE sequence number to be specific to the traffic
flow identified by the key.  However, this patch does not implement
per-key seqno.  The sequence number is shared in the same tunnel
device. That is, different tunnel keys using the same collect_md
tunnel share single sequence number.

A new BFP uapi tunnel flag 'BPF_F_SEQ_NUMBER' is added.
--
v1->v2:
  rename BPF_F_GRE_SEQ to BPF_F_SEQ_NUMBER suggested by Daniel
--
William Tu (2):
  gre: add sequence number for collect md mode.
  samples/bpf: add gre sequence number test.

 include/uapi/linux/bpf.h   |  1 +
 net/core/filter.c  |  4 +++-
 net/ipv4/ip_gre.c  |  7 +--
 net/ipv6/ip6_gre.c | 13 -
 samples/bpf/tcbpf2_kern.c  |  6 --
 samples/bpf/test_tunnel_bpf.sh |  5 +++--
 6 files changed, 24 insertions(+), 12 deletions(-)

-- 
2.7.4