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| author | Justin Pettit <jpettit@nicira.com> | 2015-10-08 12:58:48 -0700 |
|---|---|---|
| committer | Justin Pettit <jpettit@nicira.com> | 2015-10-16 00:54:38 -0700 |
| commit | 379109949ece0c818e49e153d95f3a9f4057c68e (patch) | |
| tree | 30b5ead2414d7b864cdc79182860a007ee12ca99 /ovn/ovn-architecture.7.xml | |
| parent | 3c6535332029ff6a03121ce9a392c2cb627bea27 (diff) | |
| download | openvswitch-379109949ece0c818e49e153d95f3a9f4057c68e.tar.gz | |
ovn-controller: Support VXLAN enapsulation.
Signed-off-by: Justin Pettit <jpettit@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
Diffstat (limited to 'ovn/ovn-architecture.7.xml')
| -rw-r--r-- | ovn/ovn-architecture.7.xml | 43 |
1 files changed, 29 insertions, 14 deletions
diff --git a/ovn/ovn-architecture.7.xml b/ovn/ovn-architecture.7.xml index f5b84406b..7b540d2ec 100644 --- a/ovn/ovn-architecture.7.xml +++ b/ovn/ovn-architecture.7.xml @@ -634,24 +634,39 @@ <dt>logical input port field</dt> <dd> - A field that denotes the logical port from which the packet - entered the logical datapath. - <!-- Keep the following in sync with MFF_LOG_INPORT in - ovn/controller/lflow.h. --> - OVN stores this in Nicira extension register number 6. (This field is - passed across tunnels as part of the tunnel key.) + <p> + A field that denotes the logical port from which the packet + entered the logical datapath. + <!-- Keep the following in sync with MFF_LOG_INPORT in + ovn/controller/lflow.h. --> + OVN stores this in Nicira extension register number 6. + </p> + + <p> + Geneve and STT tunnels pass this field as part of the tunnel key. + Although VXLAN tunnels do not explicitly carry a logical input port, + OVN only uses VXLAN to communicate with gateways that from OVN's + perspective consist of only a single logical port, so that OVN can set + the logical input port field to this one on ingress to the OVN logical + pipeline. + </p> </dd> <dt>logical output port field</dt> <dd> - A field that denotes the logical port from which the packet will - leave the logical datapath. This is initialized to 0 at the - beginning of the logical ingress pipeline. - <!-- Keep the following in sync with MFF_LOG_OUTPORT in - ovn/controller/lflow.h. --> - OVN stores this in - Nicira extension register number 7. (This field is passed across - tunnels as part of the tunnel key.) + <p> + A field that denotes the logical port from which the packet will + leave the logical datapath. This is initialized to 0 at the + beginning of the logical ingress pipeline. + <!-- Keep the following in sync with MFF_LOG_OUTPORT in + ovn/controller/lflow.h. --> + OVN stores this in Nicira extension register number 7. + </p> + + <p> + Geneve and STT tunnels pass this field as part of the tunnel key. + VXLAN tunnels do not transmit the logical output port field. + </p> </dd> <dt>conntrack zone field</dt> |