[SRU][F:linux-bluefield][PATCH v1 0/4] Completely support vxlan and erspan for flower

[Tony Duan]

BugLink: https://bugs.launchpad.net/bugs/2016829

SRU Justification:

[Impact]

* This patch is adding vxlan and erspan support to act_tunnel_key and fixes the bugs in erspan for the sake of completeness.

[Fix]

* cherry-pick c96adff95619178e2118925578343ad54857c80c c96adff95619 cls_flower: call nla_ok() before nla_next()
  cherry-pick 8e1b3ac4786680c2d2b5a24e38a2d714c3bcd1ef 8e1b3ac47866 net: sched: initialize with 0 before setting erspan md->u
  cherry-pick e20d4ff2acd7db2ffce64a6ddbdaeec43a8eec19 e20d4ff2acd7 net: sched: add erspan option support to act_tunnel_key
  cherry-pick fca3f91cc38ad866c995fb099d961b31cd687849 fca3f91cc38a net: sched: add vxlan option support to act_tunnel_key

[Test Plan]

* For vxlan support:
	It is to allow setting vxlan options using the
    act_tunnel_key action. Different from geneve options,
    only one option can be set. And also, geneve options
    and vxlan options can't be set at the same time.
    gbp is the only param for vxlan options:

      # ip link add name vxlan0 type vxlan dstport 0 external
      # tc qdisc add dev eth0 ingress
      # tc filter add dev eth0 protocol ip parent ffff: \
               flower indev eth0 \
                  ip_proto udp \
                  action tunnel_key \
                      set src_ip 10.0.99.192 \
                      dst_ip 10.0.99.193 \
                      dst_port 6081 \
                      id 11 \
                      vxlan_opts 01020304 \
               action mirred egress redirect dev vxlan0

For erspan support:
	It is to allow setting erspan options using the
    act_tunnel_key action. Different from geneve options,
    only one option can be set. And also, geneve options,
    vxlan options or erspan options can't be set at the
    same time.

    Options are expressed as ver:index:dir:hwid, when ver
    is set to 1, index will be applied while dir and hwid
    will be ignored, and when ver is set to 2, dir and
    hwid will be used while index will be ignored.

      # ip link add name erspan1 type erspan external
      # tc qdisc add dev eth0 ingress
      # tc filter add dev eth0 protocol ip parent ffff: \
               flower indev eth0 \
                  ip_proto udp \
                  action tunnel_key \
                      set src_ip 10.0.99.192 \
                      dst_ip 10.0.99.193 \
                      dst_port 6081 \
                      id 11 \
                    erspan_opts 1:2:0:0 \
               action mirred egress redirect dev erspan1
			   
  Check the action is correcttly filtered

[Where problems could occur]

* Without this patch, it does not support vxlan / erspan with act_tunnel_key

[Other Info]

* nothing

Cong Wang (1):
  cls_flower: call nla_ok() before nla_next()

Xin Long (3):
  net: sched: add vxlan option support to act_tunnel_key
  net: sched: add erspan option support to act_tunnel_key
  net: sched: initialize with 0 before setting erspan md->u

 include/uapi/linux/tc_act/tc_tunnel_key.h |  29 ++++
 net/sched/act_tunnel_key.c                | 203 +++++++++++++++++++++-
 net/sched/cls_flower.c                    |  23 ++-
 3 files changed, 245 insertions(+), 10 deletions(-)

-- 
2.25.1