Re: [patch net-next 16/17] mlxsw: spectrum_router: Abort on source-specific routes

On Wed, Jul 19, 2017 at 10:16:19AM -0600, David Ahern wrote:

On 7/19/17 1:02 AM, Jiri Pirko wrote:

quoted

From: Ido Schimmel <redacted>

Without resorting to ACLs, the device performs route lookup solely based
on the destination IP address.

In case source-specific routing is needed, an error is returned and the
abort mechanism is activated, thus allowing the kernel to take over
forwarding decisions.

Instead of aborting, we can trap specific destination prefixes where
source-specific routes are present, but this will result in a lot more
code that is unlikely to ever be used.

Do you have a document summarizing these for users?

As you know, we've a Wiki we maintain for the features covered by mlxsw.
Once these patches are applied to net-next I intend to extend it with
IPv6 documentation and mention the above there.

I did a similar thing with inter-VRF routes:
https://github.com/Mellanox/mlxsw/wiki/Virtual-Routing-and-Forwarding-(VRF)#inter-vrf-routing