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nsh: add dec_nsh_ttl action

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NSH ttl is a 6-bit field ranged from 0 to 63, it should be
decremented by 1 every hop, if it is 0 or it is so after
decremented, the packet should be dropped and a packet-in
message is sent to main controller.

Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
This commit is contained in:
Yi Yang
2018-01-11 13:24:03 +08:00
committed by Ben Pfaff
parent 81fdabb94d
commit 491e05c233
6 changed files with 97 additions and 4 deletions
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1
include/openvswitch/ofp-actions.h
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@@ -93,6 +93,7 @@ struct vl_mff_map;
OFPACT(DEC_MPLS_TTL, ofpact_null, ofpact, "dec_mpls_ttl") \
OFPACT(PUSH_MPLS, ofpact_push_mpls, ofpact, "push_mpls") \
OFPACT(POP_MPLS, ofpact_pop_mpls, ofpact, "pop_mpls") \
OFPACT(DEC_NSH_TTL, ofpact_null, ofpact, "dec_nsh_ttl") \
\
/* Generic encap & decap */ \
OFPACT(ENCAP, ofpact_encap, props, "encap") \