xen: netif.h: add a new extra type for XDP (2cef30d7) · Commits · 戴 / test

include/xen/interface/io/netif.h

+19 −1

Original line number	Diff line number	Diff line
		@@ -160,6 +160,19 @@
		* be applied if it is set.
		*/

		/*
		* "xdp-headroom" is used to request that extra space is added
		* for XDP processing. The value is measured in bytes and passed by
		* the frontend to be consistent between both ends.
		* If the value is greater than zero that means that
		* an RX response is going to be passed to an XDP program for processing.
		* XEN_NETIF_MAX_XDP_HEADROOM defines the maximum headroom offset in bytes
		*
		* "feature-xdp-headroom" is set to "1" by the netback side like other features
		* so a guest can check if an XDP program can be processed.
		*/
		#define XEN_NETIF_MAX_XDP_HEADROOM 0x7FFF

		/*
		* Control ring
		* ============
		@@ -846,7 +859,8 @@ struct xen_netif_tx_request {
		#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)

		/* xen_netif_extra_info_t flags. */
		#define _XEN_NETIF_EXTRA_FLAG_MORE (0)
		@@ -879,6 +893,10 @@ struct xen_netif_extra_info {
		uint8_t algorithm;
		uint8_t value[4];
		} hash;
		struct {
		uint16_t headroom;
		uint16_t pad[2];
		} xdp;
		uint16_t pad[3];
		} u;
		};