[RFE] create port by providing parameters subnet_id only

[LIU Yulong]

It's really simple for neutron server to query the network id when user only supply the subnet_id during the port creation.
But now when you create the port, you need to input the network id everytime.

[Miguel Lavalle (minsel)]

What do you mean? The user creates a port like:

neutron port-create --fixed-ip subnet_id=<subnet-uuid> <net-uuid>

And you propose:

neutron port-create --fixed-ip subnet_id=<subnet-uuid>?

[Slawek Kaplonski (slaweq)]

I don't think that this is good idea from "ideology" point of view. Port is something what connects device to a network (not to subnet) and IMO this should stay like that.

If You want to make some optimization for Your client lib, You can implement it on client's side as well to make subnet_id enough to create port.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/610335

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/610336

[Miguel Lavalle (minsel)]

Looking at the patches proposed for this (https://review.openstack.org/#/c/610336 and https://review.openstack.org/#/c/610335/), it seems to me that this an API change, that I don't want to take lightly. In principle, I agree with Slawek: this can be implemented in a client without touching the API

[LIU Yulong (dragon889)]

Or, we can propose this without API change, since we have that fixed IP input. We can get network id there.

[Slawek Kaplonski (slaweq)]

LIU: It still would be the API change as now network_id is mandatory during port creation.
Please also note that network_id is required by policy also in: https://github.com/openstack/neutron-lib/blob/master/neutron_lib/api/definitions/port.py#L44
and user can allow create ports for "network_owner" in policy.json file IIRC.
I'm not sure if there is something like "subnet_owner" there.

[OpenStack Infra (hudson-openstack)]

Change abandoned by LIU Yulong (<email address hidden>) on branch: master
Review: https://review.openstack.org/610335
Reason: Add something to the client or sdk may be the proper way for now.

[OpenStack Infra (hudson-openstack)]

Change abandoned by LIU Yulong (<email address hidden>) on branch: master
Review: https://review.openstack.org/610336
Reason: Add something to the client or sdk may be the proper way for now.

[LIU Yulong (dragon889)]

Thanks guys, I'll start a client or sdk change later.