virtio-net: Introduce extended RSC feature (22b436c9) · Commits · 戴 / test

include/uapi/linux/virtio_net.h

+22 −2

Original line number	Diff line number	Diff line
		@@ -57,6 +57,7 @@
		* Steering */
		#define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */

		#define VIRTIO_NET_F_RSC_EXT 61 /* extended coalescing info */
		#define VIRTIO_NET_F_STANDBY 62 /* Act as standby for another device
		* with the same MAC.
		*/
		@@ -104,6 +105,7 @@ struct virtio_net_config {
		struct virtio_net_hdr_v1 {
		#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 /* Use csum_start, csum_offset */
		#define VIRTIO_NET_HDR_F_DATA_VALID 2 /* Csum is valid */
		#define VIRTIO_NET_HDR_F_RSC_INFO 4 /* rsc info in csum_ fields */
		__u8 flags;
		#define VIRTIO_NET_HDR_GSO_NONE 0 /* Not a GSO frame */
		#define VIRTIO_NET_HDR_GSO_TCPV4 1 /* GSO frame, IPv4 TCP (TSO) */
		@@ -113,8 +115,26 @@ struct virtio_net_hdr_v1 {
		__u8 gso_type;
		__virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */
		__virtio16 gso_size; /* Bytes to append to hdr_len per frame */
		__virtio16 csum_start; /* Position to start checksumming from */
		__virtio16 csum_offset; /* Offset after that to place checksum */
		union {
		struct {
		__virtio16 csum_start;
		__virtio16 csum_offset;
		};
		/* Checksum calculation */
		struct {
		/* Position to start checksumming from */
		__virtio16 start;
		/* Offset after that to place checksum */
		__virtio16 offset;
		} csum;
		/* Receive Segment Coalescing */
		struct {
		/* Number of coalesced segments */
		__le16 segments;
		/* Number of duplicated acks */
		__le16 dup_acks;
		} rsc;
		};
		__virtio16 num_buffers; /* Number of merged rx buffers */
		};