1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _UAPI_IF_TUNNEL_H_
3#define _UAPI_IF_TUNNEL_H_
4
5#include <linux/types.h>
6#include <linux/if.h>
7#include <linux/ip.h>
8#include <linux/in6.h>
9#include <asm/byteorder.h>
10
11
12#define SIOCGETTUNNEL   (SIOCDEVPRIVATE + 0)
13#define SIOCADDTUNNEL   (SIOCDEVPRIVATE + 1)
14#define SIOCDELTUNNEL   (SIOCDEVPRIVATE + 2)
15#define SIOCCHGTUNNEL   (SIOCDEVPRIVATE + 3)
16#define SIOCGETPRL      (SIOCDEVPRIVATE + 4)
17#define SIOCADDPRL      (SIOCDEVPRIVATE + 5)
18#define SIOCDELPRL      (SIOCDEVPRIVATE + 6)
19#define SIOCCHGPRL      (SIOCDEVPRIVATE + 7)
20#define SIOCGET6RD      (SIOCDEVPRIVATE + 8)
21#define SIOCADD6RD      (SIOCDEVPRIVATE + 9)
22#define SIOCDEL6RD      (SIOCDEVPRIVATE + 10)
23#define SIOCCHG6RD      (SIOCDEVPRIVATE + 11)
24
25#define GRE_CSUM	__cpu_to_be16(0x8000)
26#define GRE_ROUTING	__cpu_to_be16(0x4000)
27#define GRE_KEY		__cpu_to_be16(0x2000)
28#define GRE_SEQ		__cpu_to_be16(0x1000)
29#define GRE_STRICT	__cpu_to_be16(0x0800)
30#define GRE_REC		__cpu_to_be16(0x0700)
31#define GRE_ACK		__cpu_to_be16(0x0080)
32#define GRE_FLAGS	__cpu_to_be16(0x0078)
33#define GRE_VERSION	__cpu_to_be16(0x0007)
34
35#define GRE_IS_CSUM(f)		((f) & GRE_CSUM)
36#define GRE_IS_ROUTING(f)	((f) & GRE_ROUTING)
37#define GRE_IS_KEY(f)		((f) & GRE_KEY)
38#define GRE_IS_SEQ(f)		((f) & GRE_SEQ)
39#define GRE_IS_STRICT(f)	((f) & GRE_STRICT)
40#define GRE_IS_REC(f)		((f) & GRE_REC)
41#define GRE_IS_ACK(f)		((f) & GRE_ACK)
42
43#define GRE_VERSION_0		__cpu_to_be16(0x0000)
44#define GRE_VERSION_1		__cpu_to_be16(0x0001)
45#define GRE_PROTO_PPP		__cpu_to_be16(0x880b)
46#define GRE_PPTP_KEY_MASK	__cpu_to_be32(0xffff)
47
48struct ip_tunnel_parm {
49	char			name[IFNAMSIZ];
50	int			link;
51	__be16			i_flags;
52	__be16			o_flags;
53	__be32			i_key;
54	__be32			o_key;
55	struct iphdr		iph;
56};
57
58enum {
59	IFLA_IPTUN_UNSPEC,
60	IFLA_IPTUN_LINK,
61	IFLA_IPTUN_LOCAL,
62	IFLA_IPTUN_REMOTE,
63	IFLA_IPTUN_TTL,
64	IFLA_IPTUN_TOS,
65	IFLA_IPTUN_ENCAP_LIMIT,
66	IFLA_IPTUN_FLOWINFO,
67	IFLA_IPTUN_FLAGS,
68	IFLA_IPTUN_PROTO,
69	IFLA_IPTUN_PMTUDISC,
70	IFLA_IPTUN_6RD_PREFIX,
71	IFLA_IPTUN_6RD_RELAY_PREFIX,
72	IFLA_IPTUN_6RD_PREFIXLEN,
73	IFLA_IPTUN_6RD_RELAY_PREFIXLEN,
74	IFLA_IPTUN_ENCAP_TYPE,
75	IFLA_IPTUN_ENCAP_FLAGS,
76	IFLA_IPTUN_ENCAP_SPORT,
77	IFLA_IPTUN_ENCAP_DPORT,
78	IFLA_IPTUN_COLLECT_METADATA,
79	IFLA_IPTUN_FWMARK,
80	__IFLA_IPTUN_MAX,
81};
82#define IFLA_IPTUN_MAX	(__IFLA_IPTUN_MAX - 1)
83
84enum tunnel_encap_types {
85	TUNNEL_ENCAP_NONE,
86	TUNNEL_ENCAP_FOU,
87	TUNNEL_ENCAP_GUE,
88	TUNNEL_ENCAP_MPLS,
89};
90
91#define TUNNEL_ENCAP_FLAG_CSUM		(1<<0)
92#define TUNNEL_ENCAP_FLAG_CSUM6		(1<<1)
93#define TUNNEL_ENCAP_FLAG_REMCSUM	(1<<2)
94
95/* SIT-mode i_flags */
96#define	SIT_ISATAP	0x0001
97
98struct ip_tunnel_prl {
99	__be32			addr;
100	__u16			flags;
101	__u16			__reserved;
102	__u32			datalen;
103	__u32			__reserved2;
104	/* data follows */
105};
106
107/* PRL flags */
108#define	PRL_DEFAULT		0x0001
109
110struct ip_tunnel_6rd {
111	struct in6_addr		prefix;
112	__be32			relay_prefix;
113	__u16			prefixlen;
114	__u16			relay_prefixlen;
115};
116
117enum {
118	IFLA_GRE_UNSPEC,
119	IFLA_GRE_LINK,
120	IFLA_GRE_IFLAGS,
121	IFLA_GRE_OFLAGS,
122	IFLA_GRE_IKEY,
123	IFLA_GRE_OKEY,
124	IFLA_GRE_LOCAL,
125	IFLA_GRE_REMOTE,
126	IFLA_GRE_TTL,
127	IFLA_GRE_TOS,
128	IFLA_GRE_PMTUDISC,
129	IFLA_GRE_ENCAP_LIMIT,
130	IFLA_GRE_FLOWINFO,
131	IFLA_GRE_FLAGS,
132	IFLA_GRE_ENCAP_TYPE,
133	IFLA_GRE_ENCAP_FLAGS,
134	IFLA_GRE_ENCAP_SPORT,
135	IFLA_GRE_ENCAP_DPORT,
136	IFLA_GRE_COLLECT_METADATA,
137	IFLA_GRE_IGNORE_DF,
138	IFLA_GRE_FWMARK,
139	IFLA_GRE_ERSPAN_INDEX,
140	IFLA_GRE_ERSPAN_VER,
141	IFLA_GRE_ERSPAN_DIR,
142	IFLA_GRE_ERSPAN_HWID,
143	__IFLA_GRE_MAX,
144};
145
146#define IFLA_GRE_MAX	(__IFLA_GRE_MAX - 1)
147
148/* VTI-mode i_flags */
149#define VTI_ISVTI ((__force __be16)0x0001)
150
151enum {
152	IFLA_VTI_UNSPEC,
153	IFLA_VTI_LINK,
154	IFLA_VTI_IKEY,
155	IFLA_VTI_OKEY,
156	IFLA_VTI_LOCAL,
157	IFLA_VTI_REMOTE,
158	IFLA_VTI_FWMARK,
159	__IFLA_VTI_MAX,
160};
161
162#define IFLA_VTI_MAX	(__IFLA_VTI_MAX - 1)
163
164#define TUNNEL_CSUM		__cpu_to_be16(0x01)
165#define TUNNEL_ROUTING		__cpu_to_be16(0x02)
166#define TUNNEL_KEY		__cpu_to_be16(0x04)
167#define TUNNEL_SEQ		__cpu_to_be16(0x08)
168#define TUNNEL_STRICT		__cpu_to_be16(0x10)
169#define TUNNEL_REC		__cpu_to_be16(0x20)
170#define TUNNEL_VERSION		__cpu_to_be16(0x40)
171#define TUNNEL_NO_KEY		__cpu_to_be16(0x80)
172#define TUNNEL_DONT_FRAGMENT    __cpu_to_be16(0x0100)
173#define TUNNEL_OAM		__cpu_to_be16(0x0200)
174#define TUNNEL_CRIT_OPT		__cpu_to_be16(0x0400)
175#define TUNNEL_GENEVE_OPT	__cpu_to_be16(0x0800)
176#define TUNNEL_VXLAN_OPT	__cpu_to_be16(0x1000)
177#define TUNNEL_NOCACHE		__cpu_to_be16(0x2000)
178#define TUNNEL_ERSPAN_OPT	__cpu_to_be16(0x4000)
179#define TUNNEL_GTP_OPT		__cpu_to_be16(0x8000)
180
181#define TUNNEL_OPTIONS_PRESENT \
182		(TUNNEL_GENEVE_OPT | TUNNEL_VXLAN_OPT | TUNNEL_ERSPAN_OPT | \
183		TUNNEL_GTP_OPT)
184
185#endif /* _UAPI_IF_TUNNEL_H_ */
186