1 /* 2 * Copyright (c) 2017 JingPiao Chen <chenjingpiao (at) 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 static void 43 init_inet_diag_msg(struct nlmsghdr *const nlh, const unsigned int msg_len) 44 { 45 SET_STRUCT(struct nlmsghdr, nlh, 46 .nlmsg_len = msg_len, 47 .nlmsg_type = SOCK_DIAG_BY_FAMILY, 48 .nlmsg_flags = NLM_F_DUMP 49 ); 50 51 struct inet_diag_msg *const msg = NLMSG_DATA(nlh); 52 SET_STRUCT(struct inet_diag_msg, msg, 53 .idiag_family = AF_INET, 54 .idiag_state = TCP_LISTEN, 55 .id.idiag_if = ifindex_lo() 56 ); 57 58 if (!inet_pton(AF_INET, address, msg->id.idiag_src) || 59 !inet_pton(AF_INET, address, msg->id.idiag_dst)) 60 perror_msg_and_skip("inet_pton"); 61 } 62 63 static void 64 print_inet_diag_msg(const unsigned int msg_len) 65 { 66 printf("{len=%u, type=SOCK_DIAG_BY_FAMILY" 67 ", flags=NLM_F_DUMP, seq=0, pid=0}, {idiag_family=AF_INET" 68 ", idiag_state=TCP_LISTEN, idiag_timer=0, idiag_retrans=0" 69 ", id={idiag_sport=htons(0), idiag_dport=htons(0)" 70 ", idiag_src=inet_addr(\"%s\")" 71 ", idiag_dst=inet_addr(\"%s\")" 72 ", idiag_if=" IFINDEX_LO_STR 73 ", idiag_cookie=[0, 0]}" 74 ", idiag_expires=0, idiag_rqueue=0, idiag_wqueue=0" 75 ", idiag_uid=0, idiag_inode=0}", 76 msg_len, address, address); 77 } 78 79 static void 80 print_uint(const unsigned int *p) 81 { 82 printf("%u", *p); 83 } 84 85 int 86 main(void) 87 { 88 skip_if_unavailable("/proc/self/fd/"); 89 90 const int fd = create_nl_socket(NETLINK_SOCK_DIAG); 91 const unsigned int hdrlen = sizeof(struct inet_diag_msg); 92 void *const nlh0 = tail_alloc(NLMSG_SPACE(hdrlen)); 93 94 static char pattern[4096]; 95 fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1); 96 97 static const struct inet_diag_meminfo minfo = { 98 .idiag_rmem = 0xfadcacdb, 99 .idiag_wmem = 0xbdabcada, 100 .idiag_fmem = 0xbadbfafb, 101 .idiag_tmem = 0xfdacdadf 102 }; 103 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, 104 init_inet_diag_msg, print_inet_diag_msg, 105 INET_DIAG_MEMINFO, pattern, minfo, 106 PRINT_FIELD_U("{", minfo, idiag_rmem); 107 PRINT_FIELD_U(", ", minfo, idiag_wmem); 108 PRINT_FIELD_U(", ", minfo, idiag_fmem); 109 PRINT_FIELD_U(", ", minfo, idiag_tmem); 110 printf("}")); 111 112 static const struct tcpvegas_info vegas = { 113 .tcpv_enabled = 0xfadcacdb, 114 .tcpv_rttcnt = 0xbdabcada, 115 .tcpv_rtt = 0xbadbfafb, 116 .tcpv_minrtt = 0xfdacdadf 117 }; 118 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, 119 init_inet_diag_msg, print_inet_diag_msg, 120 INET_DIAG_VEGASINFO, pattern, vegas, 121 PRINT_FIELD_U("{", vegas, tcpv_enabled); 122 PRINT_FIELD_U(", ", vegas, tcpv_rttcnt); 123 PRINT_FIELD_U(", ", vegas, tcpv_rtt); 124 PRINT_FIELD_U(", ", vegas, tcpv_minrtt); 125 printf("}")); 126 127 128 static const struct tcp_dctcp_info dctcp = { 129 .dctcp_enabled = 0xfdac, 130 .dctcp_ce_state = 0xfadc, 131 .dctcp_alpha = 0xbdabcada, 132 .dctcp_ab_ecn = 0xbadbfafb, 133 .dctcp_ab_tot = 0xfdacdadf 134 }; 135 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, 136 init_inet_diag_msg, print_inet_diag_msg, 137 INET_DIAG_DCTCPINFO, pattern, dctcp, 138 PRINT_FIELD_U("{", dctcp, dctcp_enabled); 139 PRINT_FIELD_U(", ", dctcp, dctcp_ce_state); 140 PRINT_FIELD_U(", ", dctcp, dctcp_alpha); 141 PRINT_FIELD_U(", ", dctcp, dctcp_ab_ecn); 142 PRINT_FIELD_U(", ", dctcp, dctcp_ab_tot); 143 printf("}")); 144 145 static const struct tcp_bbr_info bbr = { 146 .bbr_bw_lo = 0xfdacdadf, 147 .bbr_bw_hi = 0xfadcacdb, 148 .bbr_min_rtt = 0xbdabcada, 149 .bbr_pacing_gain = 0xbadbfafb, 150 .bbr_cwnd_gain = 0xfdacdadf 151 }; 152 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, 153 init_inet_diag_msg, print_inet_diag_msg, 154 INET_DIAG_BBRINFO, pattern, bbr, 155 PRINT_FIELD_X("{", bbr, bbr_bw_lo); 156 PRINT_FIELD_X(", ", bbr, bbr_bw_hi); 157 PRINT_FIELD_U(", ", bbr, bbr_min_rtt); 158 PRINT_FIELD_U(", ", bbr, bbr_pacing_gain); 159 PRINT_FIELD_U(", ", bbr, bbr_cwnd_gain); 160 printf("}")); 161 162 static const uint32_t mem[] = { 0xaffacbad, 0xffadbcab }; 163 TEST_NLATTR_ARRAY(fd, nlh0, hdrlen, 164 init_inet_diag_msg, print_inet_diag_msg, 165 INET_DIAG_SKMEMINFO, pattern, mem, print_uint); 166 167 static uint32_t bigmem[SK_MEMINFO_VARS + 1]; 168 memcpy(bigmem, pattern, sizeof(bigmem)); 169 170 TEST_NLATTR(fd, nlh0, hdrlen, init_inet_diag_msg, print_inet_diag_msg, 171 INET_DIAG_SKMEMINFO, sizeof(bigmem), bigmem, sizeof(bigmem), 172 size_t i; 173 for (i = 0; i < SK_MEMINFO_VARS; ++i) { 174 printf(i ? ", " : "["); 175 print_uint(&bigmem[i]); 176 } 177 printf(", ...]")); 178 179 static const uint32_t mark = 0xabdfadca; 180 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, 181 init_inet_diag_msg, print_inet_diag_msg, 182 INET_DIAG_MARK, pattern, mark, 183 printf("%u", mark)); 184 185 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, 186 init_inet_diag_msg, print_inet_diag_msg, 187 INET_DIAG_CLASS_ID, pattern, mark, 188 printf("%u", mark)); 189 190 static const uint8_t shutdown = 0xcd; 191 TEST_NLATTR(fd, nlh0, hdrlen, 192 init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_SHUTDOWN, 193 sizeof(shutdown), &shutdown, sizeof(shutdown), 194 printf("%u", shutdown)); 195 196 char *const str = tail_alloc(DEFAULT_STRLEN); 197 fill_memory_ex(str, DEFAULT_STRLEN, '0', 10); 198 TEST_NLATTR(fd, nlh0, hdrlen, 199 init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_CONG, 200 DEFAULT_STRLEN, str, DEFAULT_STRLEN, 201 printf("\"%.*s\"...", DEFAULT_STRLEN, str)); 202 str[DEFAULT_STRLEN - 1] = '\0'; 203 TEST_NLATTR(fd, nlh0, hdrlen, 204 init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_CONG, 205 DEFAULT_STRLEN, str, DEFAULT_STRLEN, 206 printf("\"%s\"", str)); 207 208 puts("+++ exited with 0 +++"); 209 return 0; 210 } 211
