1 /* $NetBSD: t_pr.c,v 1.6 2011/04/26 18:42:08 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 17 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 23 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 #ifndef lint 32 __RCSID("$NetBSD: t_pr.c,v 1.6 2011/04/26 18:42:08 martin Exp $"); 33 #endif /* not lint */ 34 35 #include <sys/types.h> 36 #include <sys/socket.h> 37 #include <sys/sysctl.h> 38 39 #include <netinet/in.h> 40 #include <net/route.h> 41 42 #include <rump/rump.h> 43 #include <rump/rump_syscalls.h> 44 45 #include <atf-c.h> 46 #include <errno.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <unistd.h> 51 52 #include "../config/netconfig.c" 53 #include "../../h_macros.h" 54 55 /* 56 * Prepare rump, configure interface and route to cause fragmentation 57 */ 58 static void 59 setup(void) 60 { 61 char ifname[IFNAMSIZ]; 62 struct { 63 struct rt_msghdr m_rtm; 64 struct sockaddr_in m_sin; 65 } m_rtmsg; 66 #define rtm m_rtmsg.m_rtm 67 #define rsin m_rtmsg.m_sin 68 struct ifreq ifr; 69 int s; 70 71 rump_init(); 72 73 /* first, config lo0 & route */ 74 strcpy(ifname, "lo0"); 75 netcfg_rump_if(ifname, "127.0.0.1", "255.0.0.0"); 76 netcfg_rump_route("127.0.0.1", "255.0.0.0", "127.0.0.1"); 77 78 if ((s = rump_sys_socket(PF_ROUTE, SOCK_RAW, 0)) == -1) 79 atf_tc_fail_errno("routing socket"); 80 81 /* 82 * set MTU for interface so that route MTU doesn't 83 * get overridden by it. 84 */ 85 memset(&ifr, 0, sizeof(ifr)); 86 strcpy(ifr.ifr_name, "lo0"); 87 ifr.ifr_mtu = 1300; 88 if (rump_sys_ioctl(s, SIOCSIFMTU, &ifr) == -1) 89 atf_tc_fail_errno("set mtu"); 90 91 /* change route MTU to 100 */ 92 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 93 rtm.rtm_type = RTM_CHANGE; 94 rtm.rtm_flags = RTF_STATIC; 95 rtm.rtm_version = RTM_VERSION; 96 rtm.rtm_seq = 3; 97 rtm.rtm_inits = RTV_MTU; 98 rtm.rtm_addrs = RTA_DST; 99 rtm.rtm_rmx.rmx_mtu = 100; 100 rtm.rtm_msglen = sizeof(m_rtmsg); 101 102 memset(&rsin, 0, sizeof(rsin)); 103 rsin.sin_family = AF_INET; 104 rsin.sin_len = sizeof(rsin); 105 rsin.sin_addr.s_addr = inet_addr("127.0.0.1"); 106 107 if (rump_sys_write(s, &m_rtmsg, sizeof(m_rtmsg)) != sizeof(m_rtmsg)) 108 atf_tc_fail_errno("set route mtu"); 109 rump_sys_close(s); 110 } 111 112 /* 113 * Turn on checksums on loopback interfaces 114 */ 115 static int 116 enable_locsums(void) 117 { 118 struct sysctlnode q, ans[256]; 119 int mib[5], enable; 120 size_t alen; 121 unsigned i; 122 123 mib[0] = CTL_NET; 124 mib[1] = PF_INET; 125 mib[2] = IPPROTO_IP; 126 mib[3] = CTL_QUERY; 127 alen = sizeof(ans); 128 129 memset(&q, 0, sizeof(q)); 130 q.sysctl_flags = SYSCTL_VERSION; 131 132 if (rump_sys___sysctl(mib, 4, ans, &alen, &q, sizeof(q)) == -1) 133 return -1; 134 135 for (i = 0; i < __arraycount(ans); i++) 136 if (strcmp("do_loopback_cksum", ans[i].sysctl_name) == 0) 137 break; 138 if (i == __arraycount(ans)) { 139 errno = ENOENT; 140 return -1; 141 } 142 143 mib[3] = ans[i].sysctl_num; 144 145 enable = 1; 146 if (rump_sys___sysctl(mib, 4, NULL, NULL, &enable, 147 sizeof(enable)) == -1) 148 return errno; 149 150 return 0; 151 } 152 153 ATF_TC(loopmtu); 154 ATF_TC_HEAD(loopmtu, tc) 155 { 156 157 atf_tc_set_md_var(tc, "descr", "test lo0 fragmentation"); 158 /* PR kern/43664 */ 159 } 160 161 ATF_TC_BODY(loopmtu, tc) 162 { 163 struct sockaddr_in sin; 164 char data[2000]; 165 int s; 166 167 setup(); 168 169 /* open raw socket */ 170 s = rump_sys_socket(PF_INET, SOCK_RAW, 0); 171 if (s == -1) 172 atf_tc_fail_errno("raw socket"); 173 174 /* then, send data */ 175 memset(&sin, 0, sizeof(sin)); 176 sin.sin_family = AF_INET; 177 sin.sin_len = sizeof(sin); 178 sin.sin_port = htons(12345); 179 sin.sin_addr.s_addr = inet_addr("127.0.0.1"); 180 181 /* 182 * Should not fail anymore, PR has been fixed... 183 * 184 * atf_tc_expect_signal(SIGABRT, "PR kern/43664"); 185 */ 186 if (rump_sys_sendto(s, data, sizeof(data), 0, 187 (struct sockaddr *)&sin, sizeof(sin)) == -1) 188 atf_tc_fail_errno("sendto failed"); 189 } 190 191 ATF_TC(loopmtu_csum); 192 ATF_TC_HEAD(loopmtu_csum, tc) 193 { 194 195 atf_tc_set_md_var(tc, "descr", "test lo0 fragmentation with checksums"); 196 /* PR kern/43664 */ 197 } 198 199 ATF_TC_BODY(loopmtu_csum, tc) 200 { 201 struct sockaddr_in sin; 202 char data[2000]; 203 int s; 204 205 setup(); 206 207 ATF_CHECK(enable_locsums() == 0); 208 209 /* open raw socket */ 210 s = rump_sys_socket(PF_INET, SOCK_RAW, 0); 211 if (s == -1) 212 atf_tc_fail_errno("raw socket"); 213 214 /* then, send data */ 215 memset(&sin, 0, sizeof(sin)); 216 sin.sin_family = AF_INET; 217 sin.sin_len = sizeof(sin); 218 sin.sin_port = htons(12345); 219 sin.sin_addr.s_addr = inet_addr("127.0.0.1"); 220 221 /* 222 * Should not fail anymore, PR has been fixed... 223 * 224 * atf_tc_expect_signal(SIGABRT, "PR kern/43664"); 225 */ 226 if (rump_sys_sendto(s, data, sizeof(data), 0, 227 (struct sockaddr *)&sin, sizeof(sin)) == -1) 228 atf_tc_fail_errno("sendto failed"); 229 } 230 231 ATF_TP_ADD_TCS(tp) 232 { 233 234 ATF_TP_ADD_TC(tp, loopmtu); 235 ATF_TP_ADD_TC(tp, loopmtu_csum); 236 237 return atf_no_error(); 238 } 239 240