Re: [Xen-devel] [PATCH net-next 7/8] xen-netback: add support for a multi-queue hash mapping table

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Wed, Oct 21, 2015 at 11:36:24AM +0100, Paul Durrant wrote:
> Advertise the capability to handle a hash mapping specified by the
> frontend (see netif.h for details).
> 
> Add an ndo_select() entry point so that, of the frontend does specify a

"if the frontend ..."

> hash mapping, the skb hash is extracted and mapped to a queue. If no
> mapping is specified then the fallback queue selection function is
> called so there is no change in behaviour.
> 
> Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
[...]
> +static void xen_hash_mapping_changed(struct xenbus_watch *watch,
> +                                  const char **vec, unsigned int len)
> +{
> +     struct xenvif *vif = container_of(watch, struct xenvif,
> +                                       hash_mapping_watch);
> +
> +     xen_net_read_multi_queue_hash_mapping(vif);

Is it safe / correct to not stop the vif before changing mapping table?

Wei.

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel