[PATCH] public/io/netif.h: add a new extra type for XDP

[Denis Kirjanov <kda@xxxxxxxxxxxxxxxxx>]

The patch adds a new extra type to be able to diffirentiate
between RX responses on xen-netfront side with the adjusted offset
required for XDP processing.

For Linux the offset value is going to be passed via xenstore.

Signed-off-by: Denis Kirjanov <denis.kirjanov@xxxxxxxx>
---
 xen/include/public/io/netif.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/xen/include/public/io/netif.h b/xen/include/public/io/netif.h
index 9fcf91a..759c88a 100644
--- a/xen/include/public/io/netif.h
+++ b/xen/include/public/io/netif.h
@@ -985,7 +985,8 @@ typedef struct netif_tx_request netif_tx_request_t;
 #define XEN_NETIF_EXTRA_TYPE_MCAST_ADD (2)  /* u.mcast */
 #define XEN_NETIF_EXTRA_TYPE_MCAST_DEL (3)  /* u.mcast */
 #define XEN_NETIF_EXTRA_TYPE_HASH      (4)  /* u.hash */
-#define XEN_NETIF_EXTRA_TYPE_MAX       (5)
+#define XEN_NETIF_EXTRA_TYPE_XDP       (5)  /* u.xdp */
+#define XEN_NETIF_EXTRA_TYPE_MAX       (6)
 
 /* netif_extra_info_t flags. */
 #define _XEN_NETIF_EXTRA_FLAG_MORE (0)
@@ -1018,6 +1019,10 @@ struct netif_extra_info {
             uint8_t algorithm;
             uint8_t value[4];
         } hash;
+        struct {
+            uint16_t headroom;
+            uint32_t pad;
+        } xdp;
         uint16_t pad[3];
     } u;
 };
-- 
1.8.3.1