On Tue, Sep 27, 2016 at 12:14 PM, Ramu Ramamurthy <ramu.ramamur...@gmail.com
> wrote:
> Currently, arping from a vtep-gw physical-switch port to
> a VIF IP address does not work.
> When a physical-switch-port arps for an IP address
> of a VIF, that arp packet comes into the VIF hypervisor via a
> vxlan tunnel. That arp packet must not be responded-to by the
> arp responder table because, potentially, multiple hypervisors
> could independently respond.
> Signed-off-by: Ramu Ramamurthy <ramu.ramamur...@us.ibm.com>
> ---
> ovn/northd/ovn-northd.8.xml | 5 +++--
> ovn/northd/ovn-northd.c | 5 ++++-
> 2 files changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/ovn/northd/ovn-northd.8.xml b/ovn/northd/ovn-northd.8.xml
> index 1da633a..f27b776 100644
> --- a/ovn/northd/ovn-northd.8.xml
> +++ b/ovn/northd/ovn-northd.8.xml
> @@ -421,8 +421,9 @@
>
> <ul>
> <li>
> - Priority-100 flows to skip ARP responder if inport is of type
> - <code>localnet</code>, and advances directly to the next table.
> + Priority-100 flows to skip the ARP responder if inport type is
> + <code>localnet</code> or <code>vtep</code>, and advances directly
> + to the next table.
> </li>
>
> <li>
> diff --git a/ovn/northd/ovn-northd.c b/ovn/northd/ovn-northd.c
> index cdc5525..9606c95 100644
> --- a/ovn/northd/ovn-northd.c
> +++ b/ovn/northd/ovn-northd.c
> @@ -2683,7 +2683,10 @@ build_lswitch_flows(struct hmap *datapaths, struct
> hmap *ports,
> continue;
> }
>
> - if (!strcmp(op->nbsp->type, "localnet")) {
> + /* Skip arp responder if the logical switch inport
> + * is of type localnet or vtep. */
> + if (!strcmp(op->nbsp->type, "localnet")
> + || !strcmp(op->nbsp->type, "vtep")) {
>
The VTEP test case should be updated to also send an arp request packet,
at least from the "gateway HV".
> ds_clear(&match);
> ds_put_format(&match, "inport == %s", op->json_key);
> ovn_lflow_add(lflows, op->od, S_SWITCH_IN_ARP_ND_RSP, 100,
> --
> 1.9.1
>
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>
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