Hi,
We are trying to test a use case in Srv6 proxy using VPP v22.02, where we want
to configure a End.AD.Flow sid that has iff interface as vlan sub interface.
But when we run the below command, we see the error:-
vpp# sr localsid address 2001:f1:f1:11::111 behavior end.ad.flow nh 9.9.10.102
oif GigabitEthernet0/9/0 iif GigabitEthernet0/8/0.100
sr localsid: Error on the plugin based localsid creation.
On investigating this issue, we found a code snippet in file
"src/plugins/srv6-ad-flow/ad-flow.c" where it finds the interface type for the
iif interface configured, and if it is not a hardware interface (in our case it
is VNET_SW_INTERFACE_TYPE_SUB), it returns with the above error.
vnet_sw_interface_t *sw =
vnet_get_sw_interface (sm->vnet_main, ls_mem->sw_if_index_in);
if (sw->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
{
adj_unlock (ls_mem->nh_adj);
clib_mem_free (ls_mem);
return SID_CREATE_INVALID_IFACE_TYPE;
}
We found an RFC, which explains the working of srv6 flow proxy and it states
that "If the proxy and the service both support 802.1Q, IFACE-OUT and IFACE-IN
can also represent sub-interfaces."
https://datatracker.ietf.org/doc/html/draft-eden-srv6-tagging-proxy-00
Any specific reason why we expect the iif interface to be a hardware interface
and not a sub-interface?
Thanks and Regards,
Chinmaya Agarwal.
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