/* * Copyright (c) 2017 JingPiao Chen * Copyright (c) 2017-2018 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 "tests.h" #include #include #include #include #include #include "test_nlattr.h" #include #include static const char * const sk_meminfo_strs[] = { "SK_MEMINFO_RMEM_ALLOC", "SK_MEMINFO_RCVBUF", "SK_MEMINFO_WMEM_ALLOC", "SK_MEMINFO_SNDBUF", "SK_MEMINFO_FWD_ALLOC", "SK_MEMINFO_WMEM_QUEUED", "SK_MEMINFO_OPTMEM", "SK_MEMINFO_BACKLOG", "SK_MEMINFO_DROPS", }; static const char address[] = "10.11.12.13"; static void init_inet_diag_msg(struct nlmsghdr *const nlh, const unsigned int msg_len) { SET_STRUCT(struct nlmsghdr, nlh, .nlmsg_len = msg_len, .nlmsg_type = SOCK_DIAG_BY_FAMILY, .nlmsg_flags = NLM_F_DUMP ); struct inet_diag_msg *const msg = NLMSG_DATA(nlh); SET_STRUCT(struct inet_diag_msg, msg, .idiag_family = AF_INET, .idiag_state = TCP_LISTEN, .id.idiag_if = ifindex_lo() ); if (!inet_pton(AF_INET, address, msg->id.idiag_src) || !inet_pton(AF_INET, address, msg->id.idiag_dst)) perror_msg_and_skip("inet_pton"); } static void print_inet_diag_msg(const unsigned int msg_len) { printf("{len=%u, type=SOCK_DIAG_BY_FAMILY" ", flags=NLM_F_DUMP, seq=0, pid=0}, {idiag_family=AF_INET" ", idiag_state=TCP_LISTEN, idiag_timer=0, idiag_retrans=0" ", id={idiag_sport=htons(0), idiag_dport=htons(0)" ", idiag_src=inet_addr(\"%s\")" ", idiag_dst=inet_addr(\"%s\")" ", idiag_if=" IFINDEX_LO_STR ", idiag_cookie=[0, 0]}" ", idiag_expires=0, idiag_rqueue=0, idiag_wqueue=0" ", idiag_uid=0, idiag_inode=0}", msg_len, address, address); } static void print_uint(const unsigned int *p, size_t i) { if (i >= ARRAY_SIZE(sk_meminfo_strs)) printf("[%zu /* SK_MEMINFO_??? */", i); else printf("[%s", sk_meminfo_strs[i]); printf("] = %u", *p); } int main(void) { skip_if_unavailable("/proc/self/fd/"); static const struct inet_diag_meminfo minfo = { .idiag_rmem = 0xfadcacdb, .idiag_wmem = 0xbdabcada, .idiag_fmem = 0xbadbfafb, .idiag_tmem = 0xfdacdadf }; static const struct tcpvegas_info vegas = { .tcpv_enabled = 0xfadcacdb, .tcpv_rttcnt = 0xbdabcada, .tcpv_rtt = 0xbadbfafb, .tcpv_minrtt = 0xfdacdadf }; static const struct tcp_dctcp_info dctcp = { .dctcp_enabled = 0xfdac, .dctcp_ce_state = 0xfadc, .dctcp_alpha = 0xbdabcada, .dctcp_ab_ecn = 0xbadbfafb, .dctcp_ab_tot = 0xfdacdadf }; static const struct tcp_bbr_info bbr = { .bbr_bw_lo = 0xfdacdadf, .bbr_bw_hi = 0xfadcacdb, .bbr_min_rtt = 0xbdabcada, .bbr_pacing_gain = 0xbadbfafb, .bbr_cwnd_gain = 0xfdacdadf }; static const uint32_t mem[] = { 0xaffacbad, 0xffadbcab }; static uint32_t bigmem[SK_MEMINFO_VARS + 1]; static const uint32_t mark = 0xabdfadca; static const uint8_t shutdown = 0xcd; const int fd = create_nl_socket(NETLINK_SOCK_DIAG); const unsigned int hdrlen = sizeof(struct inet_diag_msg); void *const nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen), NLA_HDRLEN + MAX(sizeof(bigmem), DEFAULT_STRLEN)); static char pattern[4096]; fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1); TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_MEMINFO, pattern, minfo, PRINT_FIELD_U("{", minfo, idiag_rmem); PRINT_FIELD_U(", ", minfo, idiag_wmem); PRINT_FIELD_U(", ", minfo, idiag_fmem); PRINT_FIELD_U(", ", minfo, idiag_tmem); printf("}")); TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_VEGASINFO, pattern, vegas, PRINT_FIELD_U("{", vegas, tcpv_enabled); PRINT_FIELD_U(", ", vegas, tcpv_rttcnt); PRINT_FIELD_U(", ", vegas, tcpv_rtt); PRINT_FIELD_U(", ", vegas, tcpv_minrtt); printf("}")); TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_DCTCPINFO, pattern, dctcp, PRINT_FIELD_U("{", dctcp, dctcp_enabled); PRINT_FIELD_U(", ", dctcp, dctcp_ce_state); PRINT_FIELD_U(", ", dctcp, dctcp_alpha); PRINT_FIELD_U(", ", dctcp, dctcp_ab_ecn); PRINT_FIELD_U(", ", dctcp, dctcp_ab_tot); printf("}")); TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_BBRINFO, pattern, bbr, PRINT_FIELD_X("{", bbr, bbr_bw_lo); PRINT_FIELD_X(", ", bbr, bbr_bw_hi); PRINT_FIELD_U(", ", bbr, bbr_min_rtt); PRINT_FIELD_U(", ", bbr, bbr_pacing_gain); PRINT_FIELD_U(", ", bbr, bbr_cwnd_gain); printf("}")); TEST_NLATTR_ARRAY(fd, nlh0, hdrlen, init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_SKMEMINFO, pattern, mem, print_uint); memcpy(bigmem, pattern, sizeof(bigmem)); TEST_NLATTR_ARRAY(fd, nlh0, hdrlen, init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_SKMEMINFO, pattern, bigmem, print_uint); TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_MARK, pattern, mark, printf("%u", mark)); TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_CLASS_ID, pattern, mark, printf("%u", mark)); TEST_NLATTR(fd, nlh0, hdrlen, init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_SHUTDOWN, sizeof(shutdown), &shutdown, sizeof(shutdown), printf("%u", shutdown)); char *const str = tail_alloc(DEFAULT_STRLEN); fill_memory_ex(str, DEFAULT_STRLEN, '0', 10); TEST_NLATTR(fd, nlh0, hdrlen, init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_CONG, DEFAULT_STRLEN, str, DEFAULT_STRLEN, printf("\"%.*s\"...", DEFAULT_STRLEN, str)); str[DEFAULT_STRLEN - 1] = '\0'; TEST_NLATTR(fd, nlh0, hdrlen, init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_CONG, DEFAULT_STRLEN, str, DEFAULT_STRLEN, printf("\"%s\"", str)); puts("+++ exited with 0 +++"); return 0; }