Re: [RFC PATCH net-next 2/4] switchdev: add fwd_mark generator helper

roopa
2015-06-15T15:17:35Z

On 6/13/15, 11:04 AM, sfeldma@gmail.com wrote:
> From: Scott Feldman <sfeldma@gmail.com>
>
> skb->fwd_mark and dev->fwd_mark are 32-bit and should be unique for device
> and maybe even unique for a sub-set of ports within device, so add
> switchdev helper function to generate unique marks based on driver-supplied
> key. Typically, the driver would use device switch ID for key, and maybe
> additional fields in key for grouped ports such as bridge ifindex. The key
> can be of arbitrary length.
>
> The generator uses a global hash table to store fwd_marks hashed by key.
>
> Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>