On Tue, Mar 29, 2016 at 06:47:43PM -0700, Russell Bryant wrote:
> This patch implements one approach to using ovn-controller to implement
> a software l2 gateway between logical and physical networks.
>
> A new logical port type called "gateway" is introduced here. It is very
> close to how localnet ports work, with the following exception:
> A localnet port makes OVN use the physical network as the
> transport between hypervisors instead of tunnels. A gateway port still
> uses tunnels between all hypervisors, and packets only go to/from the
> specified physical network as needed via the chassis the gateway port
> is bound to.
>
> Signed-off-by: Russell Bryant <russ...@ovn.org>
This isn't a full review yet but I have some comments.
Below, I don't think it's guaranteed that 'chassis_id != NULL'. There's
a check for that just above the patch context, and I don't think that
br_int != NULL implies that chassis_id != NULL. Chasing the usage of
chassis_id down a few levels, it appears to be used without a null test.
> --- a/ovn/controller/ovn-controller.c
> +++ b/ovn/controller/ovn-controller.c
> @@ -293,7 +293,7 @@ main(int argc, char *argv[])
> }
>
> if (br_int) {
> - patch_run(&ctx, br_int, &local_datapaths);
> + patch_run(&ctx, br_int, &local_datapaths, chassis_id);
>
> struct lport_index lports;
> struct mcgroup_index mcgroups;
When I apply the hunk below I get two <dt>s in a row about "localnet",
which seems like a mistake. Is the second one supposed to be about
"gateway"?
> --- a/ovn/ovn-sb.xml
> +++ b/ovn/ovn-sb.xml
> @@ -1299,6 +1299,14 @@ tcp.flags = RST;
> to model direct connectivity to an existing network.
> </dd>
>
> + <dt><code>localnet</code></dt>
> + <dd>
> + A connection to a physical network. The chassis this
> + <ref table="Port_Binding"/> is bound to will serve as
> + an L2 gateway to the network named by
> + <ref column="options"
> table="Port_Binding"/>:<code>network_name</code>.
> + </dd>
> +
> <dt><code>vtep</code></dt>
> <dd>
> A port to a logical switch on a VTEP gateway chassis. In order
> to
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