include/uapi/linux/if_tunnel.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/if_tunnel.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/if_tunnel.h
Extension
.h
Size
5653 bytes
Lines
222
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct ip_tunnel_parm {
	char			name[IFNAMSIZ];
	int			link;
	__be16			i_flags;
	__be16			o_flags;
	__be32			i_key;
	__be32			o_key;
	struct iphdr		iph;
};

enum {
	IFLA_IPTUN_UNSPEC,
	IFLA_IPTUN_LINK,
	IFLA_IPTUN_LOCAL,
	IFLA_IPTUN_REMOTE,
	IFLA_IPTUN_TTL,
	IFLA_IPTUN_TOS,
	IFLA_IPTUN_ENCAP_LIMIT,
	IFLA_IPTUN_FLOWINFO,
	IFLA_IPTUN_FLAGS,
	IFLA_IPTUN_PROTO,
	IFLA_IPTUN_PMTUDISC,
	IFLA_IPTUN_6RD_PREFIX,
	IFLA_IPTUN_6RD_RELAY_PREFIX,
	IFLA_IPTUN_6RD_PREFIXLEN,
	IFLA_IPTUN_6RD_RELAY_PREFIXLEN,
	IFLA_IPTUN_ENCAP_TYPE,
	IFLA_IPTUN_ENCAP_FLAGS,
	IFLA_IPTUN_ENCAP_SPORT,
	IFLA_IPTUN_ENCAP_DPORT,
	IFLA_IPTUN_COLLECT_METADATA,
	IFLA_IPTUN_FWMARK,
	__IFLA_IPTUN_MAX,
};
#define IFLA_IPTUN_MAX	(__IFLA_IPTUN_MAX - 1)

enum tunnel_encap_types {
	TUNNEL_ENCAP_NONE,
	TUNNEL_ENCAP_FOU,
	TUNNEL_ENCAP_GUE,
	TUNNEL_ENCAP_MPLS,
};

#define TUNNEL_ENCAP_FLAG_CSUM		(1<<0)
#define TUNNEL_ENCAP_FLAG_CSUM6		(1<<1)
#define TUNNEL_ENCAP_FLAG_REMCSUM	(1<<2)

/* SIT-mode i_flags */
#define	SIT_ISATAP	0x0001

struct ip_tunnel_prl {
	__be32			addr;
	__u16			flags;
	__u16			__reserved;
	__u32			datalen;
	__u32			__reserved2;
	/* data follows */
};

/* PRL flags */
#define	PRL_DEFAULT		0x0001

struct ip_tunnel_6rd {
	struct in6_addr		prefix;
	__be32			relay_prefix;
	__u16			prefixlen;
	__u16			relay_prefixlen;
};

enum {
	IFLA_GRE_UNSPEC,
	IFLA_GRE_LINK,
	IFLA_GRE_IFLAGS,
	IFLA_GRE_OFLAGS,
	IFLA_GRE_IKEY,
	IFLA_GRE_OKEY,
	IFLA_GRE_LOCAL,
	IFLA_GRE_REMOTE,
	IFLA_GRE_TTL,
	IFLA_GRE_TOS,
	IFLA_GRE_PMTUDISC,
	IFLA_GRE_ENCAP_LIMIT,
	IFLA_GRE_FLOWINFO,
	IFLA_GRE_FLAGS,
	IFLA_GRE_ENCAP_TYPE,
	IFLA_GRE_ENCAP_FLAGS,
	IFLA_GRE_ENCAP_SPORT,
	IFLA_GRE_ENCAP_DPORT,
	IFLA_GRE_COLLECT_METADATA,
	IFLA_GRE_IGNORE_DF,

Annotation

Implementation Notes