xref: /linux-6.15/include/linux/ipv6_route.h (revision ebacaaa0)
1 /*
2  *	Linux INET6 implementation
3  *
4  *	Authors:
5  *	Pedro Roque		<[email protected]>
6  *
7  *	This program is free software; you can redistribute it and/or
8  *      modify it under the terms of the GNU General Public License
9  *      as published by the Free Software Foundation; either version
10  *      2 of the License, or (at your option) any later version.
11  */
12 
13 #ifndef _LINUX_IPV6_ROUTE_H
14 #define _LINUX_IPV6_ROUTE_H
15 
16 #define RTF_DEFAULT	0x00010000	/* default - learned via ND	*/
17 #define RTF_ALLONLINK	0x00020000	/* (deprecated and will be removed)
18 					   fallback, no routers on link */
19 #define RTF_ADDRCONF	0x00040000	/* addrconf route - RA		*/
20 #define RTF_PREFIX_RT	0x00080000	/* A prefix only route - RA	*/
21 #define RTF_ANYCAST	0x00100000	/* Anycast			*/
22 
23 #define RTF_NONEXTHOP	0x00200000	/* route with no nexthop	*/
24 #define RTF_EXPIRES	0x00400000
25 
26 #define RTF_CACHE	0x01000000	/* cache entry			*/
27 #define RTF_FLOW	0x02000000	/* flow significant route	*/
28 #define RTF_POLICY	0x04000000	/* policy route			*/
29 
30 #define RTF_PREF(pref)	((pref) << 27)
31 #define RTF_PREF_MASK	0x18000000
32 
33 #define RTF_LOCAL	0x80000000
34 
35 #ifdef __KERNEL__
36 #define IPV6_EXTRACT_PREF(flag)	(((flag) & RTF_PREF_MASK) >> 27)
37 #define IPV6_DECODE_PREF(pref)	((pref) ^ 2)	/* 1:low,2:med,3:high */
38 #endif
39 
40 struct in6_rtmsg {
41 	struct in6_addr		rtmsg_dst;
42 	struct in6_addr		rtmsg_src;
43 	struct in6_addr		rtmsg_gateway;
44 	__u32			rtmsg_type;
45 	__u16			rtmsg_dst_len;
46 	__u16			rtmsg_src_len;
47 	__u32			rtmsg_metric;
48 	unsigned long		rtmsg_info;
49         __u32			rtmsg_flags;
50 	int			rtmsg_ifindex;
51 };
52 
53 #define RTMSG_NEWDEVICE		0x11
54 #define RTMSG_DELDEVICE		0x12
55 #define RTMSG_NEWROUTE		0x21
56 #define RTMSG_DELROUTE		0x22
57 
58 #endif
59