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authorH. Peter Anvin <hpa@zytor.com>2008-08-12 10:34:51 -0700
committerH. Peter Anvin <hpa@zytor.com>2008-08-12 10:34:51 -0700
commita19312bee0a7cef7cfa0fa109312600cc2da36f7 (patch)
tree19bab255da0e9d14a7dd1fb4a6db7587da848834 /gpxe/src/drivers/net/virtio-net.h
parent7552258bacc4ef63f7ad40baf26162a1bcf81f78 (diff)
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Merge updated version of the gPXE code
Merge gPXE up to upstream git version gpxe-0.9.3-release-197-gff2b6a5 (ff2b6a512d7a4f351e48dc9a042099a1010342a3). Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'gpxe/src/drivers/net/virtio-net.h')
-rw-r--r--gpxe/src/drivers/net/virtio-net.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/gpxe/src/drivers/net/virtio-net.h b/gpxe/src/drivers/net/virtio-net.h
new file mode 100644
index 00000000..3abef28e
--- /dev/null
+++ b/gpxe/src/drivers/net/virtio-net.h
@@ -0,0 +1,44 @@
+#ifndef _VIRTIO_NET_H_
+# define _VIRTIO_NET_H_
+
+/* The feature bitmap for virtio net */
+#define VIRTIO_NET_F_CSUM 0 /* Host handles pkts w/ partial csum */
+#define VIRTIO_NET_F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */
+#define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */
+#define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */
+#define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */
+#define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */
+#define VIRTIO_NET_F_GUEST_ECN 9 /* Guest can handle TSO[6] w/ ECN in. */
+#define VIRTIO_NET_F_GUEST_UFO 10 /* Guest can handle UFO in. */
+#define VIRTIO_NET_F_HOST_TSO4 11 /* Host can handle TSOv4 in. */
+#define VIRTIO_NET_F_HOST_TSO6 12 /* Host can handle TSOv6 in. */
+#define VIRTIO_NET_F_HOST_ECN 13 /* Host can handle TSO[6] w/ ECN in. */
+#define VIRTIO_NET_F_HOST_UFO 14 /* Host can handle UFO in. */
+
+struct virtio_net_config
+{
+ /* The config defining mac address (if VIRTIO_NET_F_MAC) */
+ u8 mac[6];
+} __attribute__((packed));
+
+/* This is the first element of the scatter-gather list. If you don't
+ * specify GSO or CSUM features, you can simply ignore the header. */
+
+struct virtio_net_hdr
+{
+#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 // Use csum_start, csum_offset
+ uint8_t flags;
+#define VIRTIO_NET_HDR_GSO_NONE 0 // Not a GSO frame
+#define VIRTIO_NET_HDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO)
+/* FIXME: Do we need this? If they said they can handle ECN, do they care? */
+#define VIRTIO_NET_HDR_GSO_TCPV4_ECN 2 // GSO frame, IPv4 TCP w/ ECN
+#define VIRTIO_NET_HDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO)
+#define VIRTIO_NET_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP
+#define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set
+ uint8_t gso_type;
+ uint16_t hdr_len;
+ uint16_t gso_size;
+ uint16_t csum_start;
+ uint16_t csum_offset;
+};
+#endif /* _VIRTIO_NET_H_ */