Re: [PATCH net-next V2] cls_flower: Support multiple masks per priority

[David Miller <davem@davemloft.net>]

From: Paul Blakey <paulb@mellanox.com>
Date: Mon, 30 Apr 2018 14:28:30 +0300

> Currently flower doesn't support inserting filters with different masks
> on a single priority, even if the actual flows (key + mask) inserted
> aren't overlapping, as with the use case of offloading openvswitch
> datapath flows. Instead one must go up one level, and assign different
> priorities for each mask, which will create a different flower
> instances.
> 
> This patch opens flower to support more than one mask per priority,
> and a single flower instance. It does so by adding another hash table
> on top of the existing one which will store the different masks,
> and the filters that share it.
> 
> The user is left with the responsibility of ensuring non overlapping
> flows, otherwise precedence is not guaranteed.
> 
> Signed-off-by: Paul Blakey <paulb@mellanox.com>
> Signed-off-by: Jiri Pirko <jiri@mellanox.com>
> ---
> 
> Changes:
> V1 -> V2: in fl_init, removed unnessecry err variable, just return direct result instead.
>           in fl_mask_range, removed extra new line.
>           commit msg, spelling.

Applied, thanks.