| Message ID | 1462447170-1815-5-git-send-email-paul.durrant@citrix.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, May 05, 2016 at 12:19:30PM +0100, Paul Durrant wrote: > My recent patch to include/xen/interface/io/netif.h defines a new extra > info type that can be used to pass hash values between backend and guest > frontend. > > This patch adds code to xen-netback to use the value in a hash extra > info fragment passed from the guest frontend in a transmit-side > (i.e. netback receive side) packet to set the skb hash accordingly. > > Signed-off-by: Paul Durrant <paul.durrant@citrix.com> > Cc: Wei Liu <wei.liu2@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com>
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index 7c72510..a5b5aad 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -1509,6 +1509,33 @@ static void xenvif_tx_build_gops(struct xenvif_queue *queue, } } + if (extras[XEN_NETIF_EXTRA_TYPE_HASH - 1].type) { + struct xen_netif_extra_info *extra; + enum pkt_hash_types type = PKT_HASH_TYPE_NONE; + + extra = &extras[XEN_NETIF_EXTRA_TYPE_HASH - 1]; + + switch (extra->u.hash.type) { + case _XEN_NETIF_CTRL_HASH_TYPE_IPV4: + case _XEN_NETIF_CTRL_HASH_TYPE_IPV6: + type = PKT_HASH_TYPE_L3; + break; + + case _XEN_NETIF_CTRL_HASH_TYPE_IPV4_TCP: + case _XEN_NETIF_CTRL_HASH_TYPE_IPV6_TCP: + type = PKT_HASH_TYPE_L4; + break; + + default: + break; + } + + if (type != PKT_HASH_TYPE_NONE) + skb_set_hash(skb, + *(u32 *)extra->u.hash.value, + type); + } + XENVIF_TX_CB(skb)->pending_idx = pending_idx; __skb_put(skb, data_len);
My recent patch to include/xen/interface/io/netif.h defines a new extra info type that can be used to pass hash values between backend and guest frontend. This patch adds code to xen-netback to use the value in a hash extra info fragment passed from the guest frontend in a transmit-side (i.e. netback receive side) packet to set the skb hash accordingly. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Cc: Wei Liu <wei.liu2@citrix.com> --- drivers/net/xen-netback/netback.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)