virtio_net.h

来自「linux 内核源代码」· C头文件 代码 · 共 37 行

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#ifndef _LINUX_VIRTIO_NET_H#define _LINUX_VIRTIO_NET_H#include <linux/virtio_config.h>/* The ID for virtio_net */#define VIRTIO_ID_NET	1/* The bitmap of config for virtio net */#define VIRTIO_CONFIG_NET_F	0x40#define VIRTIO_NET_F_NO_CSUM	0#define VIRTIO_NET_F_TSO4	1#define VIRTIO_NET_F_UFO	2#define VIRTIO_NET_F_TSO4_ECN	3#define VIRTIO_NET_F_TSO6	4/* The config defining mac address. */#define VIRTIO_CONFIG_NET_MAC_F	0x41/* 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      __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)/* 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      __u8 gso_type;      __u16 gso_size;      __u16 csum_start;      __u16 csum_offset;};#endif /* _LINUX_VIRTIO_NET_H */

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