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 <stddef.h> 33 #include "test_nlattr.h" 34 #include <linux/pkt_sched.h> 35 #include <linux/rtnetlink.h> 36 37 static void 38 init_tcmsg(struct nlmsghdr *const nlh, const unsigned int msg_len) 39 { 40 SET_STRUCT(struct nlmsghdr, nlh, 41 .nlmsg_len = msg_len, 42 .nlmsg_type = RTM_GETQDISC, 43 .nlmsg_flags = NLM_F_DUMP 44 ); 45 46 struct tcmsg *const msg = NLMSG_DATA(nlh); 47 SET_STRUCT(struct tcmsg, msg, 48 .tcm_family = AF_UNIX, 49 .tcm_ifindex = ifindex_lo() 50 ); 51 52 } 53 54 static void 55 print_tcmsg(const unsigned int msg_len) 56 { 57 printf("{len=%u, type=RTM_GETQDISC, flags=NLM_F_DUMP" 58 ", seq=0, pid=0}, {tcm_family=AF_UNIX" 59 ", tcm_ifindex=" IFINDEX_LO_STR 60 ", tcm_handle=0, tcm_parent=0, tcm_info=0}", 61 msg_len); 62 } 63 64 int 65 main(void) 66 { 67 skip_if_unavailable("/proc/self/fd/"); 68 69 const int fd = create_nl_socket(NETLINK_ROUTE); 70 const unsigned int hdrlen = sizeof(struct tcmsg); 71 void *nlh0 = tail_alloc(NLMSG_SPACE(hdrlen)); 72 73 static char pattern[4096]; 74 fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1); 75 76 const unsigned int nla_type = 0xffff & NLA_TYPE_MASK; 77 char nla_type_str[256]; 78 sprintf(nla_type_str, "%#x /* TCA_??? */", nla_type); 79 TEST_NLATTR_(fd, nlh0, hdrlen, 80 init_tcmsg, print_tcmsg, 81 nla_type, nla_type_str, 82 4, pattern, 4, 83 print_quoted_hex(pattern, 4)); 84 85 static const struct tc_stats st = { 86 .bytes = 0xabcdcdbefeadefac, 87 .packets = 0xbcdeaefd, 88 .drops = 0xcdedafed, 89 .overlimits = 0xdcdbefad, 90 .bps = 0xefaebfad, 91 .pps = 0xfefbaedb, 92 .qlen = 0xabcdefab, 93 .backlog = 0xbdeabeab 94 }; 95 char buf[offsetofend(struct tc_stats, backlog)]; 96 memcpy(buf, &st, sizeof(buf)); 97 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, 98 init_tcmsg, print_tcmsg, 99 TCA_STATS, pattern, buf, 100 PRINT_FIELD_U("{", st, bytes); 101 PRINT_FIELD_U(", ", st, packets); 102 PRINT_FIELD_U(", ", st, drops); 103 PRINT_FIELD_U(", ", st, overlimits); 104 PRINT_FIELD_U(", ", st, bps); 105 PRINT_FIELD_U(", ", st, pps); 106 PRINT_FIELD_U(", ", st, qlen); 107 PRINT_FIELD_U(", ", st, backlog); 108 printf("}")); 109 110 static const struct tc_estimator est = { 111 .interval = 0xcd, 112 .ewma_log = 0xab 113 }; 114 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen, 115 init_tcmsg, print_tcmsg, 116 TCA_RATE, pattern, est, 117 PRINT_FIELD_D("{", est, interval); 118 PRINT_FIELD_U(", ", est, ewma_log); 119 printf("}")); 120 121 puts("+++ exited with 0 +++"); 122 return 0; 123 } 124
