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 #ifdef HAVE_IF_INDEXTONAME 43 # define IFINDEX_LO (if_nametoindex("lo")) 44 #else 45 # define IFINDEX_LO 1 46 #endif 47 48 static void 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 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 85 print_uint(const unsigned int *p) 86 { 87 printf("%u", *p); 88 } 89 90 int 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
