1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/*
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 2016-2017 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#ifdef HAVE_STRUCT_BR_PORT_MSG
# include "netlink_route.h"
# include "nlattr.h"
# include "print_fields.h"
# include <netinet/in.h>
# include <linux/if_bridge.h>
# include "netlink.h"
# ifdef HAVE_STRUCT_BR_MDB_ENTRY_FLAGS
# include "xlat/mdb_flags.h"
# endif
# include "xlat/mdb_states.h"
# include "xlat/multicast_router_types.h"
# include "xlat/rtnl_mdb_attrs.h"
# include "xlat/rtnl_mdba_mdb_attrs.h"
# include "xlat/rtnl_mdba_mdb_eattr_attrs.h"
# include "xlat/rtnl_mdba_mdb_entry_attrs.h"
# include "xlat/rtnl_mdba_router_attrs.h"
# include "xlat/rtnl_mdba_router_pattr_attrs.h"
static const nla_decoder_t mdba_mdb_eattr_nla_decoders[] = {
[MDBA_MDB_EATTR_TIMER] = decode_nla_u32
};
static bool
decode_mdba_mdb_entry_info(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
# ifdef HAVE_STRUCT_BR_MDB_ENTRY
struct br_mdb_entry entry;
if (len < sizeof(entry))
return false;
else if (!umove_or_printaddr(tcp, addr, &entry)) {
PRINT_FIELD_IFINDEX("{", entry, ifindex);
PRINT_FIELD_XVAL(", ", entry, state, mdb_states, "MDB_???");
# ifdef HAVE_STRUCT_BR_MDB_ENTRY_FLAGS
PRINT_FIELD_FLAGS(", ", entry, flags,
mdb_flags, "MDB_FLAGS_???");
# endif
# ifdef HAVE_STRUCT_BR_MDB_ENTRY_VID
PRINT_FIELD_U(", ", entry, vid);
# endif
const int proto = ntohs(entry.addr.proto);
tprints(", addr={");
print_inet_addr(proto, &entry.addr.u,
sizeof(entry.addr.u), "u");
tprints(", proto=htons(");
printxval(addrfams, proto, "AF_???");
tprints(")}}");
}
const size_t offset = NLMSG_ALIGN(sizeof(entry));
if (len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
rtnl_mdba_mdb_eattr_attrs, "MDBA_MDB_EATTR_???",
mdba_mdb_eattr_nla_decoders,
ARRAY_SIZE(mdba_mdb_eattr_nla_decoders), NULL);
}
return true;
# else
return false;
# endif /* HAVE_STRUCT_BR_MDB_ENTRY */
}
static const nla_decoder_t mdba_mdb_entry_nla_decoders[] = {
[MDBA_MDB_ENTRY_INFO] = decode_mdba_mdb_entry_info
};
static bool
decode_mdba_mdb_entry(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
decode_nlattr(tcp, addr, len, rtnl_mdba_mdb_entry_attrs,
"MDBA_MDB_ENTRY_???", mdba_mdb_entry_nla_decoders,
ARRAY_SIZE(mdba_mdb_entry_nla_decoders), NULL);
return true;
}
static const nla_decoder_t mdba_mdb_nla_decoders[] = {
[MDBA_MDB_ENTRY] = decode_mdba_mdb_entry
};
static bool
decode_mdba_mdb(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
decode_nlattr(tcp, addr, len, rtnl_mdba_mdb_attrs, "MDBA_MDB_???",
mdba_mdb_nla_decoders,
ARRAY_SIZE(mdba_mdb_nla_decoders), NULL);
return true;
}
static bool
decode_multicast_router_type(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
uint8_t type;
if (!umove_or_printaddr(tcp, addr, &type))
printxval(multicast_router_types, type, "MDB_RTR_TYPE_???");
return true;
}
static const nla_decoder_t mdba_router_pattr_nla_decoders[] = {
[MDBA_ROUTER_PATTR_TIMER] = decode_nla_u32,
[MDBA_ROUTER_PATTR_TYPE] = decode_multicast_router_type
};
static bool
decode_mdba_router_port(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
uint32_t ifindex;
if (len < sizeof(ifindex))
return false;
else if (!umove_or_printaddr(tcp, addr, &ifindex))
print_ifindex(ifindex);
const size_t offset = NLMSG_ALIGN(sizeof(ifindex));
if (len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
rtnl_mdba_router_pattr_attrs,
"MDBA_ROUTER_PATTR_???",
mdba_router_pattr_nla_decoders,
ARRAY_SIZE(mdba_router_pattr_nla_decoders), NULL);
}
return true;
}
static const nla_decoder_t mdba_router_nla_decoders[] = {
[MDBA_ROUTER_PORT] = decode_mdba_router_port
};
static bool
decode_mdba_router(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
decode_nlattr(tcp, addr, len, rtnl_mdba_router_attrs, "MDBA_ROUTER_???",
mdba_router_nla_decoders,
ARRAY_SIZE(mdba_router_nla_decoders), NULL);
return true;
}
static const nla_decoder_t br_port_msg_nla_decoders[] = {
[MDBA_MDB] = decode_mdba_mdb,
[MDBA_ROUTER] = decode_mdba_router
};
DECL_NETLINK_ROUTE_DECODER(decode_br_port_msg)
{
struct br_port_msg bpm = { .family = family };
size_t offset = sizeof(bpm.family);
bool decode_nla = false;
PRINT_FIELD_XVAL("{", bpm, family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(bpm)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(bpm) - offset,
(void *) &bpm + offset)) {
PRINT_FIELD_IFINDEX("", bpm, ifindex);
decode_nla = true;
}
} else
tprints("...");
tprints("}");
offset = NLMSG_ALIGN(sizeof(bpm));
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
rtnl_mdb_attrs, "MDBA_???",
br_port_msg_nla_decoders,
ARRAY_SIZE(br_port_msg_nla_decoders), NULL);
}
}
#endif
|
