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 "test_nlattr.h" 33 #include <linux/pkt_sched.h> 34 #include <linux/rtnetlink.h> 35 36 #ifndef TCA_STAB 37 # define TCA_STAB 8 38 #endif 39 #ifndef TCA_STAB_DATA 40 # define TCA_STAB_DATA 2 41 #endif 42 43 const unsigned int hdrlen = sizeof(struct tcmsg); 44 45 static void 46 init_tcmsg(struct nlmsghdr *const nlh, const unsigned int msg_len) 47 { 48 SET_STRUCT(struct nlmsghdr, nlh, 49 .nlmsg_len = msg_len, 50 .nlmsg_type = RTM_GETQDISC, 51 .nlmsg_flags = NLM_F_DUMP 52 ); 53 54 struct tcmsg *const msg = NLMSG_DATA(nlh); 55 SET_STRUCT(struct tcmsg, msg, 56 .tcm_family = AF_UNIX, 57 .tcm_ifindex = ifindex_lo() 58 ); 59 60 struct nlattr *const nla = NLMSG_ATTR(nlh, sizeof(*msg)); 61 SET_STRUCT(struct nlattr, nla, 62 .nla_len = msg_len - NLMSG_SPACE(hdrlen), 63 .nla_type = TCA_STAB 64 ); 65 } 66 67 static void 68 print_tcmsg(const unsigned int msg_len) 69 { 70 printf("{len=%u, type=RTM_GETQDISC, flags=NLM_F_DUMP" 71 ", seq=0, pid=0}, {tcm_family=AF_UNIX" 72 ", tcm_ifindex=" IFINDEX_LO_STR 73 ", tcm_handle=0, tcm_parent=0, tcm_info=0}" 74 ", {{nla_len=%u, nla_type=TCA_STAB}", 75 msg_len, msg_len - NLMSG_SPACE(hdrlen)); 76 } 77 78 static void 79 print_uint16(const uint16_t *p) 80 { 81 printf("%u", *p); 82 } 83 84 int 85 main(void) 86 { 87 skip_if_unavailable("/proc/self/fd/"); 88 89 const int fd = create_nl_socket(NETLINK_ROUTE); 90 void *nlh0 = tail_alloc(NLMSG_SPACE(hdrlen)); 91 92 static char pattern[4096]; 93 fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1); 94 95 #ifdef HAVE_STRUCT_TC_SIZESPEC 96 static const struct tc_sizespec s = { 97 .cell_log = 0xab, 98 .size_log = 0xcd, 99 .cell_align = 0xefab, 100 .overhead = 0xcdadeefa, 101 .linklayer = 0xefbaafeb, 102 .mpu = 0xfebfaefb, 103 .mtu = 0xacdbefab, 104 .tsize = 0xbdeaabed 105 }; 106 TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen, 107 init_tcmsg, print_tcmsg, 108 TCA_STAB_BASE, pattern, s, 109 PRINT_FIELD_U("{", s, cell_log); 110 PRINT_FIELD_U(", ", s, size_log); 111 PRINT_FIELD_D(", ", s, cell_align); 112 PRINT_FIELD_D(", ", s, overhead); 113 PRINT_FIELD_U(", ", s, linklayer); 114 PRINT_FIELD_U(", ", s, mpu); 115 PRINT_FIELD_U(", ", s, mtu); 116 PRINT_FIELD_U(", ", s, tsize); 117 printf("}")); 118 #endif 119 120 uint16_t data[2] = { 0xacbd, 0xefba }; 121 TEST_NESTED_NLATTR_ARRAY(fd, nlh0, hdrlen, 122 init_tcmsg, print_tcmsg, 123 TCA_STAB_DATA, pattern, data, print_uint16); 124 125 puts("+++ exited with 0 +++"); 126 return 0; 127 } 128
