1 /*
2 * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
3 * Copyright (c) 2017 The strace developers.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following 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 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "tests.h"
30
31 #ifdef HAVE_STRUCT_BR_PORT_MSG
32
33 # include <stdio.h>
34 # include "test_nlattr.h"
35 # include <arpa/inet.h>
36 # include <linux/if_bridge.h>
37 # include <linux/rtnetlink.h>
38
39 # ifndef MDB_TEMPORARY
40 # define MDB_TEMPORARY 0
41 # endif
42 # ifndef MDBA_MDB_ENTRY_INFO
43 # define MDBA_MDB_ENTRY_INFO 1
44 # endif
45 # ifndef MDBA_MDB_EATTR_TIMER
46 # define MDBA_MDB_EATTR_TIMER 1
47 # endif
48
49 const unsigned int hdrlen = sizeof(struct br_port_msg);
50
51 static void
init_br_port_msg(struct nlmsghdr * const nlh,const unsigned int msg_len)52 init_br_port_msg(struct nlmsghdr *const nlh, const unsigned int msg_len)
53 {
54 unsigned int len = msg_len;
55
56 SET_STRUCT(struct nlmsghdr, nlh,
57 .nlmsg_len = len,
58 .nlmsg_type = RTM_GETMDB,
59 .nlmsg_flags = NLM_F_DUMP
60 );
61
62 struct br_port_msg *const msg = NLMSG_DATA(nlh);
63 SET_STRUCT(struct br_port_msg, msg,
64 .family = AF_UNIX,
65 .ifindex = ifindex_lo()
66 );
67
68 struct nlattr *nla = NLMSG_ATTR(nlh, sizeof(*msg));
69 len -= NLMSG_SPACE(hdrlen);
70 SET_STRUCT(struct nlattr, nla,
71 .nla_len = len,
72 .nla_type = MDBA_MDB
73 );
74
75 nla = nla + 1;
76 len -= NLA_HDRLEN;
77 SET_STRUCT(struct nlattr, nla,
78 .nla_len = len,
79 .nla_type = MDBA_MDB_ENTRY
80 );
81 }
82
83 static void
print_br_port_msg(const unsigned int msg_len)84 print_br_port_msg(const unsigned int msg_len)
85 {
86 printf("{len=%u, type=RTM_GETMDB, flags=NLM_F_DUMP"
87 ", seq=0, pid=0}, {family=AF_UNIX"
88 ", ifindex=" IFINDEX_LO_STR "}"
89 ", {{nla_len=%u, nla_type=MDBA_MDB}"
90 ", {{nla_len=%u, nla_type=MDBA_MDB_ENTRY}",
91 msg_len, msg_len - NLMSG_SPACE(hdrlen),
92 msg_len - NLMSG_SPACE(hdrlen) - NLA_HDRLEN);
93 }
94
95 int
main(void)96 main(void)
97 {
98 skip_if_unavailable("/proc/self/fd/");
99
100 const int fd = create_nl_socket(NETLINK_ROUTE);
101
102 void *nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
103
104 static char pattern[4096];
105 fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
106
107 const unsigned int nla_type = 0xffff & NLA_TYPE_MASK;
108 char nla_type_str[256];
109 sprintf(nla_type_str, "%#x /* MDBA_MDB_ENTRY_??? */", nla_type);
110 TEST_NLATTR_(fd, nlh0 - NLA_HDRLEN * 2, hdrlen + NLA_HDRLEN * 2,
111 init_br_port_msg, print_br_port_msg,
112 nla_type, nla_type_str,
113 4, pattern, 4,
114 print_quoted_hex(pattern, 4);
115 printf("}}"));
116
117 # ifdef HAVE_STRUCT_BR_MDB_ENTRY
118 struct br_mdb_entry entry = {
119 .ifindex = ifindex_lo(),
120 .state = MDB_TEMPORARY,
121 # ifdef HAVE_STRUCT_BR_MDB_ENTRY_FLAGS
122 .flags = MDB_FLAGS_OFFLOAD,
123 # endif
124 # ifdef HAVE_STRUCT_BR_MDB_ENTRY_VID
125 .vid = 0xcdef,
126 # endif
127 .addr = {
128 .proto = htons(AF_UNSPEC)
129 }
130 };
131
132 memcpy(&entry.addr.u, pattern, sizeof(entry.addr.u));
133 TEST_NESTED_NLATTR_OBJECT_EX(fd, nlh0, hdrlen,
134 init_br_port_msg, print_br_port_msg,
135 MDBA_MDB_ENTRY_INFO, pattern, entry, 2,
136 printf("{ifindex=" IFINDEX_LO_STR);
137 printf(", state=MDB_TEMPORARY");
138 # ifdef HAVE_STRUCT_BR_MDB_ENTRY_FLAGS
139 printf(", flags=MDB_FLAGS_OFFLOAD");
140 # endif
141 # ifdef HAVE_STRUCT_BR_MDB_ENTRY_VID
142 PRINT_FIELD_U(", ", entry, vid);
143 # endif
144 printf(", addr={u=");
145 print_quoted_hex(&entry.addr.u,
146 sizeof(entry.addr.u));
147 printf(", proto=htons(AF_UNSPEC)}}"));
148
149 static const struct nlattr nla = {
150 .nla_len = sizeof(nla),
151 .nla_type = MDBA_MDB_EATTR_TIMER
152 };
153 char buf[NLMSG_ALIGN(sizeof(entry)) + sizeof(nla)];
154 memcpy(buf, &entry, sizeof(entry));
155 memcpy(buf + NLMSG_ALIGN(sizeof(entry)), &nla, sizeof(nla));
156 TEST_NLATTR(fd, nlh0 - NLA_HDRLEN * 2, hdrlen + NLA_HDRLEN * 2,
157 init_br_port_msg, print_br_port_msg,
158 MDBA_MDB_ENTRY_INFO, sizeof(buf), buf, sizeof(buf),
159 printf("{ifindex=" IFINDEX_LO_STR);
160 printf(", state=MDB_TEMPORARY");
161 # ifdef HAVE_STRUCT_BR_MDB_ENTRY_FLAGS
162 printf(", flags=MDB_FLAGS_OFFLOAD");
163 # endif
164 # ifdef HAVE_STRUCT_BR_MDB_ENTRY_VID
165 PRINT_FIELD_U(", ", entry, vid);
166 # endif
167 printf(", addr={u=");
168 print_quoted_hex(&entry.addr.u, sizeof(entry.addr.u));
169 printf(", proto=htons(AF_UNSPEC)}}"
170 ", {nla_len=%u, nla_type=MDBA_MDB_EATTR_TIMER}}}",
171 nla.nla_len));
172 # endif /* HAVE_STRUCT_BR_MDB_ENTRY */
173
174 puts("+++ exited with 0 +++");
175 return 0;
176 }
177
178 #else
179
180 SKIP_MAIN_UNDEFINED("HAVE_STRUCT_BR_PORT_MSG")
181
182 #endif
183