linux-stable/include/net/gue.h

#ifndef __NET_GUE_H
#define __NET_GUE_H

struct guehdr {
	union {
		struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
			__u8	hlen:4,
			version:4;
#elif defined (__BIG_ENDIAN_BITFIELD)
			__u8	version:4,
				hlen:4;
#else
#error  "Please fix <asm/byteorder.h>"
#endif
			__u8    next_hdr;
			__u16   flags;
		};
		__u32 word;
	};
};

#endif
gue: Receive side for Generic UDP Encapsulation This patch adds support receiving for GUE packets in the fou module. The fou module now supports direct foo-over-udp (no encapsulation header) and GUE. To support this a type parameter is added to the fou netlink parameters. For a GUE socket we define gue_udp_recv, gue_gro_receive, and gue_gro_complete to handle the specifics of the GUE protocol. Most of the code to manage and configure sockets is common with the fou. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> 2014-10-03 22:48:09 +00:00			`#ifndef __NET_GUE_H`
			`#define __NET_GUE_H`

			`struct guehdr {`
			`union {`
			`struct {`
			`#if defined(__LITTLE_ENDIAN_BITFIELD)`
			`__u8 hlen:4,`
			`version:4;`
			`#elif defined (__BIG_ENDIAN_BITFIELD)`
			`__u8 version:4,`
			`hlen:4;`
			`#else`
			`#error "Please fix <asm/byteorder.h>"`
			`#endif`
			`__u8 next_hdr;`
			`__u16 flags;`
			`};`
			`__u32 word;`
			`};`
			`};`

			`#endif`