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Diffstat (limited to 'include/uapi/linux/virtio_net.h')
-rw-r--r--include/uapi/linux/virtio_net.h24
1 files changed, 22 insertions, 2 deletions
diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h
index a3715a3224c1..6466c5979a93 100644
--- a/include/uapi/linux/virtio_net.h
+++ b/include/uapi/linux/virtio_net.h
@@ -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 */
};