xref: /freebsd/sys/net/if_vxlan.h (revision 95ee2897e98f5d444f26ed2334cc7c439f9c16c6)
1 /*-
2  * Copyright (c) 2014, Bryan Venteicher <bryanv@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice unmodified, this list of conditions, and the following
10  *    disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26 
27 #ifndef _NET_IF_VXLAN_H_
28 #define _NET_IF_VXLAN_H_
29 
30 #include <sys/types.h>
31 #include <sys/socket.h>
32 #include <net/ethernet.h>
33 #include <net/if.h>
34 #include <netinet/in.h>
35 
36 struct vxlan_header {
37 	uint32_t	vxlh_flags;
38 	uint32_t	vxlh_vni;
39 };
40 
41 #define VXLAN_HDR_FLAGS_VALID_VNI	0x08000000
42 #define VXLAN_HDR_VNI_SHIFT		8
43 
44 #define VXLAN_VNI_MAX	(1 << 24)
45 #define VXLAN_VNI_MASK	(VXLAN_VNI_MAX - 1)
46 
47 /*
48  * The port assigned by IANA is 4789, but some early implementations
49  * (like Linux) use 8472 instead. If not specified, we default to
50  * the IANA port.
51  */
52 #define VXLAN_PORT		4789
53 #define VXLAN_LEGACY_PORT	8472
54 
55 union vxlan_sockaddr {
56 	struct sockaddr		sa;
57 	struct sockaddr_in	in4;
58 	struct sockaddr_in6	in6;
59 };
60 
61 struct ifvxlanparam {
62 	uint64_t		vxlp_with;
63 
64 #define VXLAN_PARAM_WITH_VNI		0x0001
65 #define VXLAN_PARAM_WITH_LOCAL_ADDR4	0x0002
66 #define VXLAN_PARAM_WITH_LOCAL_ADDR6	0x0004
67 #define VXLAN_PARAM_WITH_REMOTE_ADDR4	0x0008
68 #define VXLAN_PARAM_WITH_REMOTE_ADDR6	0x0010
69 #define VXLAN_PARAM_WITH_LOCAL_PORT	0x0020
70 #define VXLAN_PARAM_WITH_REMOTE_PORT	0x0040
71 #define VXLAN_PARAM_WITH_PORT_RANGE	0x0080
72 #define VXLAN_PARAM_WITH_FTABLE_TIMEOUT	0x0100
73 #define VXLAN_PARAM_WITH_FTABLE_MAX	0x0200
74 #define VXLAN_PARAM_WITH_MULTICAST_IF	0x0400
75 #define VXLAN_PARAM_WITH_TTL		0x0800
76 #define VXLAN_PARAM_WITH_LEARN		0x1000
77 
78 	uint32_t		vxlp_vni;
79 	union vxlan_sockaddr 	vxlp_local_sa;
80 	union vxlan_sockaddr 	vxlp_remote_sa;
81 	uint16_t		vxlp_local_port;
82 	uint16_t		vxlp_remote_port;
83 	uint16_t		vxlp_min_port;
84 	uint16_t		vxlp_max_port;
85 	char			vxlp_mc_ifname[IFNAMSIZ];
86 	uint32_t		vxlp_ftable_timeout;
87 	uint32_t		vxlp_ftable_max;
88 	uint8_t			vxlp_ttl;
89 	uint8_t			vxlp_learn;
90 };
91 
92 #define VXLAN_SOCKADDR_IS_IPV4(_vxsin)	((_vxsin)->sa.sa_family == AF_INET)
93 #define VXLAN_SOCKADDR_IS_IPV6(_vxsin)	((_vxsin)->sa.sa_family == AF_INET6)
94 #define VXLAN_SOCKADDR_IS_IPV46(_vxsin) \
95     (VXLAN_SOCKADDR_IS_IPV4(_vxsin) || VXLAN_SOCKADDR_IS_IPV6(_vxsin))
96 
97 #define VXLAN_CMD_GET_CONFIG		0
98 #define VXLAN_CMD_SET_VNI		1
99 #define VXLAN_CMD_SET_LOCAL_ADDR	2
100 #define VXLAN_CMD_SET_REMOTE_ADDR	4
101 #define VXLAN_CMD_SET_LOCAL_PORT	5
102 #define VXLAN_CMD_SET_REMOTE_PORT	6
103 #define VXLAN_CMD_SET_PORT_RANGE	7
104 #define VXLAN_CMD_SET_FTABLE_TIMEOUT	8
105 #define VXLAN_CMD_SET_FTABLE_MAX	9
106 #define VXLAN_CMD_SET_MULTICAST_IF	10
107 #define VXLAN_CMD_SET_TTL		11
108 #define VXLAN_CMD_SET_LEARN		12
109 #define VXLAN_CMD_FTABLE_ENTRY_ADD	13
110 #define VXLAN_CMD_FTABLE_ENTRY_REM	14
111 #define VXLAN_CMD_FLUSH			15
112 
113 struct ifvxlancfg {
114 	uint32_t		vxlc_vni;
115 	union vxlan_sockaddr	vxlc_local_sa;
116 	union vxlan_sockaddr	vxlc_remote_sa;
117 	uint32_t		vxlc_mc_ifindex;
118 	uint32_t		vxlc_ftable_cnt;
119 	uint32_t		vxlc_ftable_max;
120 	uint32_t		vxlc_ftable_timeout;
121 	uint16_t		vxlc_port_min;
122 	uint16_t		vxlc_port_max;
123 	uint8_t			vxlc_learn;
124 	uint8_t			vxlc_ttl;
125 };
126 
127 struct ifvxlancmd {
128 	uint32_t		vxlcmd_flags;
129 #define VXLAN_CMD_FLAG_FLUSH_ALL	0x0001
130 #define VXLAN_CMD_FLAG_LEARN		0x0002
131 
132 	uint32_t		vxlcmd_vni;
133 	uint32_t		vxlcmd_ftable_timeout;
134 	uint32_t		vxlcmd_ftable_max;
135 	uint16_t		vxlcmd_port;
136 	uint16_t		vxlcmd_port_min;
137 	uint16_t		vxlcmd_port_max;
138 	uint8_t			vxlcmd_mac[ETHER_ADDR_LEN];
139 	uint8_t			vxlcmd_ttl;
140 	union vxlan_sockaddr	vxlcmd_sa;
141 	char			vxlcmd_ifname[IFNAMSIZ];
142 };
143 
144 #ifdef _KERNEL
145 typedef void (*vxlan_event_handler_t)(void *, struct ifnet *, sa_family_t,
146     u_int);
147 EVENTHANDLER_DECLARE(vxlan_start, vxlan_event_handler_t);
148 EVENTHANDLER_DECLARE(vxlan_stop, vxlan_event_handler_t);
149 #endif
150 
151 #endif /* _NET_IF_VXLAN_H_ */
152