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| author | Jan Scheurich <jan.scheurich@ericsson.com> | 2017-08-05 13:41:08 +0800 |
|---|---|---|
| committer | Ben Pfaff <blp@ovn.org> | 2017-08-07 11:26:09 -0700 |
| commit | 3d2fbd70bda514f7327970b859663f34f994290c (patch) | |
| tree | 5a5fb77fbc30f598c56c5af1d666a70bf815a796 /include/openvswitch/packets.h | |
| parent | 05f282c2e16126577de7704b16f9dd591b927904 (diff) | |
| download | openvswitch-3d2fbd70bda514f7327970b859663f34f994290c.tar.gz | |
userspace: Add support for NSH MD1 match fields
This patch adds support for NSH packet header fields to the OVS
control plane and the userspace datapath. Initially we support the
fields of the NSH base header as defined in
https://www.ietf.org/id/draft-ietf-sfc-nsh-13.txt
and the fixed context headers specified for metadata format MD1.
The variable length MD2 format is parsed but the TLV context headers
are not yet available for matching.
The NSH fields are modelled as experimenter fields with the dedicated
experimenter class 0x005ad650 proposed for NSH in ONF. The following
fields are defined:
NXOXM code ofctl name Size Comment
=====================================================================
NXOXM_NSH_FLAGS nsh_flags 8 Bits 2-9 of 1st NSH word
(0x005ad650,1)
NXOXM_NSH_MDTYPE nsh_mdtype 8 Bits 16-23
(0x005ad650,2)
NXOXM_NSH_NEXTPROTO nsh_np 8 Bits 24-31
(0x005ad650,3)
NXOXM_NSH_SPI nsh_spi 24 Bits 0-23 of 2nd NSH word
(0x005ad650,4)
NXOXM_NSH_SI nsh_si 8 Bits 24-31
(0x005ad650,5)
NXOXM_NSH_C1 nsh_c1 32 Maskable, nsh_mdtype==1
(0x005ad650,6)
NXOXM_NSH_C2 nsh_c2 32 Maskable, nsh_mdtype==1
(0x005ad650,7)
NXOXM_NSH_C3 nsh_c3 32 Maskable, nsh_mdtype==1
(0x005ad650,8)
NXOXM_NSH_C4 nsh_c4 32 Maskable, nsh_mdtype==1
(0x005ad650,9)
Co-authored-by: Johnson Li <johnson.li@intel.com>
Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Jan Scheurich <jan.scheurich@ericsson.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
Diffstat (limited to 'include/openvswitch/packets.h')
| -rw-r--r-- | include/openvswitch/packets.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/openvswitch/packets.h b/include/openvswitch/packets.h index e440f666e..be91e02da 100644 --- a/include/openvswitch/packets.h +++ b/include/openvswitch/packets.h @@ -77,4 +77,20 @@ union flow_vlan_hdr { } #endif +/* Network Service Header keys */ +struct flow_nsh { + uint8_t flags; + uint8_t mdtype; + uint8_t np; + uint8_t si; + ovs_be32 spi; + ovs_be32 c[4]; +}; + +/* NSH flags */ +#define FLOW_NSH_F_OAM (1 << 0) +#define FLOW_NSH_F_CTX (1 << 1) + +#define FLOW_NSH_F_MASK ((1 << 2) - 1) + #endif /* packets.h */ |