1/**
2 * Copyright (c) 2012
3 *
4 * Gregory Detal <gregory.detal@uclouvain.be>
5 * Christoph Paasch <christoph.paasch@uclouvain.be>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * 3. Neither the name of the University nor of the Laboratory may be used
19 *    to endorse or promote products derived from this software without
20 *    specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#define MPTCP_SUB_CAPABLE       0x0
36#define MPTCP_SUB_JOIN          0x1
37#define MPTCP_SUB_DSS           0x2
38#define MPTCP_SUB_ADD_ADDR      0x3
39#define MPTCP_SUB_REMOVE_ADDR   0x4
40#define MPTCP_SUB_PRIO          0x5
41#define MPTCP_SUB_FAIL          0x6
42#define MPTCP_SUB_FCLOSE        0x7
43
44
45struct mptcp_option {
46        u_int8_t        kind;
47        u_int8_t        len;
48        u_int8_t        sub_etc;        /* subtype upper 4 bits, other stuff lower 4 bits */
49};
50
51#define MPTCP_OPT_SUBTYPE(sub_etc)      (((sub_etc) >> 4) & 0xF)
52
53struct mp_capable {
54        u_int8_t        kind;
55        u_int8_t        len;
56        u_int8_t        sub_ver;
57        u_int8_t        flags;
58        u_int8_t        sender_key[8];
59        u_int8_t        receiver_key[8];
60};
61
62#define MP_CAPABLE_OPT_VERSION(sub_ver) (((sub_ver) >> 0) & 0xF)
63#define MP_CAPABLE_C                    0x80
64#define MP_CAPABLE_S                    0x01
65
66struct mp_join {
67        u_int8_t        kind;
68        u_int8_t        len;
69        u_int8_t        sub_b;
70        u_int8_t        addr_id;
71        union {
72                struct {
73                        u_int8_t         token[4];
74                        u_int8_t         nonce[4];
75                } syn;
76                struct {
77                        u_int8_t         mac[8];
78                        u_int8_t         nonce[4];
79                } synack;
80                struct {
81                        u_int8_t        mac[20];
82                } ack;
83        } u;
84};
85
86#define MP_JOIN_B                       0x01
87
88struct mp_dss {
89        u_int8_t        kind;
90        u_int8_t        len;
91        u_int8_t        sub;
92        u_int8_t        flags;
93};
94
95#define MP_DSS_F                        0x10
96#define MP_DSS_m                        0x08
97#define MP_DSS_M                        0x04
98#define MP_DSS_a                        0x02
99#define MP_DSS_A                        0x01
100
101struct mp_add_addr {
102        u_int8_t        kind;
103        u_int8_t        len;
104        u_int8_t        sub_ipver;
105        u_int8_t        addr_id;
106        union {
107                struct {
108                        u_int8_t         addr[4];
109                        u_int8_t         port[2];
110                } v4;
111                struct {
112                        u_int8_t         addr[16];
113                        u_int8_t         port[2];
114                } v6;
115        } u;
116};
117
118#define MP_ADD_ADDR_IPVER(sub_ipver)    (((sub_ipver) >> 0) & 0xF)
119
120struct mp_remove_addr {
121        u_int8_t        kind;
122        u_int8_t        len;
123        u_int8_t        sub;
124        /* list of addr_id */
125        u_int8_t        addrs_id;
126};
127
128struct mp_fail {
129        u_int8_t        kind;
130        u_int8_t        len;
131        u_int8_t        sub;
132        u_int8_t        resv;
133        u_int8_t        data_seq[8];
134};
135
136struct mp_close {
137        u_int8_t        kind;
138        u_int8_t        len;
139        u_int8_t        sub;
140        u_int8_t        rsv;
141        u_int8_t        key[8];
142};
143
144struct mp_prio {
145        u_int8_t        kind;
146        u_int8_t        len;
147        u_int8_t        sub_b;
148        u_int8_t        addr_id;
149};
150
151#define MP_PRIO_B                       0x01
152