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Re: [Xen-devel] [PATCH v5 4/5] public/io/netif.h: add extra info slots for passing hash values



> -----Original Message-----
> From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
> Sent: 22 October 2015 09:51
> To: Paul Durrant
> Cc: Ian Campbell; Ian Jackson; xen-devel@xxxxxxxxxxxxxxxxxxxx; Keir
> (Xen.org); Tim (Xen.org)
> Subject: Re: [PATCH v5 4/5] public/io/netif.h: add extra info slots for 
> passing
> hash values
> 
> >>> On 20.10.15 at 14:35, <paul.durrant@xxxxxxxxxx> wrote:
> > @@ -390,6 +396,18 @@
> >   * type: Must be XEN_NETIF_EXTRA_TYPE_MCAST_{ADD,DEL}
> >   * flags: XEN_NETIF_EXTRA_FLAG_*
> >   * addr: address to add/remove
> > + *
> > + * XEN_NETIF_EXTRA_TYPE_HASH:
> > + *
> > + *    0     1     2     3     4     5     6     7  octet
> > + * +-----+-----+-----+-----+-----+-----+-----+-----+
> > + * |type |flags|htype| pad |LSB ---- value ---- MSB|
> > + * +-----+-----+-----+-----+-----+-----+-----+-----+
> > + *
> > + * type: Must be XEN_NETIF_EXTRA_TYPE_HASH
> > + * flags: XEN_NETIF_EXTRA_FLAG_*
> > + * htype: XEN_NETIF_HASH_TYPE_*
> > + * value: Hash value
> >   */
> 
> For future extensibility, require the pad field to be zero?
> 

Absolutely. That was my intention but you're right that it needs to be stated.

  Paul

> Jan


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