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 #include <stdio.h>
32 #include <string.h>
33 #include <arpa/inet.h>
34 #include <net/if.h>
35 #include <netinet/tcp.h>
36 #include "test_nlattr.h"
37 #include <linux/inet_diag.h>
38 #include <linux/sock_diag.h>
39
40 static const char address[] = "10.11.12.13";
41
42 #ifdef HAVE_IF_INDEXTONAME
43 # define IFINDEX_LO (if_nametoindex("lo"))
44 #else
45 # define IFINDEX_LO 1
46 #endif
47
48 static void
init_inet_diag_msg(struct nlmsghdr * const nlh,const unsigned int msg_len)49 init_inet_diag_msg(struct nlmsghdr *const nlh, const unsigned int msg_len)
50 {
51 SET_STRUCT(struct nlmsghdr, nlh,
52 .nlmsg_len = msg_len,
53 .nlmsg_type = SOCK_DIAG_BY_FAMILY,
54 .nlmsg_flags = NLM_F_DUMP
55 );
56
57 struct inet_diag_msg *const msg = NLMSG_DATA(nlh);
58 SET_STRUCT(struct inet_diag_msg, msg,
59 .idiag_family = AF_INET,
60 .idiag_state = TCP_LISTEN,
61 .id.idiag_if = IFINDEX_LO
62 );
63
64 if (!inet_pton(AF_INET, address, msg->id.idiag_src) ||
65 !inet_pton(AF_INET, address, msg->id.idiag_dst))
66 perror_msg_and_skip("inet_pton");
67 }
68
69 static void
print_inet_diag_msg(const unsigned int msg_len)70 print_inet_diag_msg(const unsigned int msg_len)
71 {
72 printf("{len=%u, type=SOCK_DIAG_BY_FAMILY"
73 ", flags=NLM_F_DUMP, seq=0, pid=0}, {idiag_family=AF_INET"
74 ", idiag_state=TCP_LISTEN, idiag_timer=0, idiag_retrans=0"
75 ", id={idiag_sport=htons(0), idiag_dport=htons(0)"
76 ", inet_pton(AF_INET, \"%s\", &idiag_src)"
77 ", inet_pton(AF_INET, \"%s\", &idiag_dst)"
78 ", idiag_if=if_nametoindex(\"lo\"), idiag_cookie=[0, 0]}"
79 ", idiag_expires=0, idiag_rqueue=0, idiag_wqueue=0"
80 ", idiag_uid=0, idiag_inode=0}",
81 msg_len, address, address);
82 }
83
84 static void
print_uint(const unsigned int * p)85 print_uint(const unsigned int *p)
86 {
87 printf("%u", *p);
88 }
89
90 int
main(void)91 main(void)
92 {
93 skip_if_unavailable("/proc/self/fd/");
94
95 const int fd = create_nl_socket(NETLINK_SOCK_DIAG);
96 const unsigned int hdrlen = sizeof(struct inet_diag_msg);
97 void *const nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
98
99 static char pattern[4096];
100 fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
101
102 static const struct inet_diag_meminfo minfo = {
103 .idiag_rmem = 0xfadcacdb,
104 .idiag_wmem = 0xbdabcada,
105 .idiag_fmem = 0xbadbfafb,
106 .idiag_tmem = 0xfdacdadf
107 };
108 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
109 init_inet_diag_msg, print_inet_diag_msg,
110 INET_DIAG_MEMINFO, pattern, minfo,
111 PRINT_FIELD_U("{", minfo, idiag_rmem);
112 PRINT_FIELD_U(", ", minfo, idiag_wmem);
113 PRINT_FIELD_U(", ", minfo, idiag_fmem);
114 PRINT_FIELD_U(", ", minfo, idiag_tmem);
115 printf("}"));
116
117 static const struct tcpvegas_info vegas = {
118 .tcpv_enabled = 0xfadcacdb,
119 .tcpv_rttcnt = 0xbdabcada,
120 .tcpv_rtt = 0xbadbfafb,
121 .tcpv_minrtt = 0xfdacdadf
122 };
123 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
124 init_inet_diag_msg, print_inet_diag_msg,
125 INET_DIAG_VEGASINFO, pattern, vegas,
126 PRINT_FIELD_U("{", vegas, tcpv_enabled);
127 PRINT_FIELD_U(", ", vegas, tcpv_rttcnt);
128 PRINT_FIELD_U(", ", vegas, tcpv_rtt);
129 PRINT_FIELD_U(", ", vegas, tcpv_minrtt);
130 printf("}"));
131
132
133 static const struct tcp_dctcp_info dctcp = {
134 .dctcp_enabled = 0xfdac,
135 .dctcp_ce_state = 0xfadc,
136 .dctcp_alpha = 0xbdabcada,
137 .dctcp_ab_ecn = 0xbadbfafb,
138 .dctcp_ab_tot = 0xfdacdadf
139 };
140 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
141 init_inet_diag_msg, print_inet_diag_msg,
142 INET_DIAG_DCTCPINFO, pattern, dctcp,
143 PRINT_FIELD_U("{", dctcp, dctcp_enabled);
144 PRINT_FIELD_U(", ", dctcp, dctcp_ce_state);
145 PRINT_FIELD_U(", ", dctcp, dctcp_alpha);
146 PRINT_FIELD_U(", ", dctcp, dctcp_ab_ecn);
147 PRINT_FIELD_U(", ", dctcp, dctcp_ab_tot);
148 printf("}"));
149
150 static const struct tcp_bbr_info bbr = {
151 .bbr_bw_lo = 0xfdacdadf,
152 .bbr_bw_hi = 0xfadcacdb,
153 .bbr_min_rtt = 0xbdabcada,
154 .bbr_pacing_gain = 0xbadbfafb,
155 .bbr_cwnd_gain = 0xfdacdadf
156 };
157 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
158 init_inet_diag_msg, print_inet_diag_msg,
159 INET_DIAG_BBRINFO, pattern, bbr,
160 PRINT_FIELD_X("{", bbr, bbr_bw_lo);
161 PRINT_FIELD_X(", ", bbr, bbr_bw_hi);
162 PRINT_FIELD_U(", ", bbr, bbr_min_rtt);
163 PRINT_FIELD_U(", ", bbr, bbr_pacing_gain);
164 PRINT_FIELD_U(", ", bbr, bbr_cwnd_gain);
165 printf("}"));
166
167 static const uint32_t mem[] = { 0xaffacbad, 0xffadbcab };
168 TEST_NLATTR_ARRAY(fd, nlh0, hdrlen,
169 init_inet_diag_msg, print_inet_diag_msg,
170 INET_DIAG_SKMEMINFO, pattern, mem, print_uint);
171
172 static const uint32_t mark = 0xabdfadca;
173 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
174 init_inet_diag_msg, print_inet_diag_msg,
175 INET_DIAG_MARK, pattern, mark,
176 printf("%u", mark));
177
178 static const uint8_t shutdown = 0xcd;
179 TEST_NLATTR(fd, nlh0, hdrlen,
180 init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_SHUTDOWN,
181 sizeof(shutdown), &shutdown, sizeof(shutdown),
182 printf("%u", shutdown));
183
184 char *const str = tail_alloc(DEFAULT_STRLEN);
185 fill_memory_ex(str, DEFAULT_STRLEN, '0', 10);
186 TEST_NLATTR(fd, nlh0, hdrlen,
187 init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_CONG,
188 DEFAULT_STRLEN, str, DEFAULT_STRLEN,
189 printf("\"%.*s\"...", DEFAULT_STRLEN, str));
190 str[DEFAULT_STRLEN - 1] = '\0';
191 TEST_NLATTR(fd, nlh0, hdrlen,
192 init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_CONG,
193 DEFAULT_STRLEN, str, DEFAULT_STRLEN,
194 printf("\"%s\"", str));
195
196 puts("+++ exited with 0 +++");
197 return 0;
198 }
199