1 /* $NetBSD: t_pr.c,v 1.5 2011/04/10 11:31:48 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 1.5 2011/04/10 11:31:48 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 server, 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 static bool init_done = false; 72 if (init_done) return; 73 74 strcpy(ifname, "lo0"); 75 rump_init(); 76 77 /* first, config lo0 & route */ 78 netcfg_rump_if(ifname, "127.0.0.1", "255.0.0.0"); 79 netcfg_rump_route("127.0.0.1", "255.0.0.0", "127.0.0.1"); 80 81 if ((s = rump_sys_socket(PF_ROUTE, SOCK_RAW, 0)) == -1) 82 atf_tc_fail_errno("routing socket"); 83 84 /* 85 * set MTU for interface so that route MTU doesn't 86 * get overridden by it. 87 */ 88 memset(&ifr, 0, sizeof(ifr)); 89 strcpy(ifr.ifr_name, "lo0"); 90 ifr.ifr_mtu = 1300; 91 if (rump_sys_ioctl(s, SIOCSIFMTU, &ifr) == -1) 92 atf_tc_fail_errno("set mtu"); 93 94 /* change route MTU to 100 */ 95 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 96 rtm.rtm_type = RTM_CHANGE; 97 rtm.rtm_flags = RTF_STATIC; 98 rtm.rtm_version = RTM_VERSION; 99 rtm.rtm_seq = 3; 100 rtm.rtm_inits = RTV_MTU; 101 rtm.rtm_addrs = RTA_DST; 102 rtm.rtm_rmx.rmx_mtu = 100; 103 rtm.rtm_msglen = sizeof(m_rtmsg); 104 105 memset(&rsin, 0, sizeof(rsin)); 106 rsin.sin_family = AF_INET; 107 rsin.sin_len = sizeof(rsin); 108 rsin.sin_addr.s_addr = inet_addr("127.0.0.1"); 109 110 if (rump_sys_write(s, &m_rtmsg, sizeof(m_rtmsg)) != sizeof(m_rtmsg)) 111 atf_tc_fail_errno("set route mtu"); 112 rump_sys_close(s); 113 114 init_done = true; 115 } 116 117 /* 118 * Turn on checksums on loopback interfaces 119 */ 120 static int 121 enable_locsums(void) 122 { 123 struct sysctlnode q, ans[256]; 124 int mib[5], enable; 125 size_t alen; 126 unsigned i; 127 128 mib[0] = CTL_NET; 129 mib[1] = PF_INET; 130 mib[2] = IPPROTO_IP; 131 mib[3] = CTL_QUERY; 132 alen = sizeof(ans); 133 134 memset(&q, 0, sizeof(q)); 135 q.sysctl_flags = SYSCTL_VERSION; 136 137 if (rump_sys___sysctl(mib, 4, ans, &alen, &q, sizeof(q)) == -1) 138 return -1; 139 140 for (i = 0; i < __arraycount(ans); i++) 141 if (strcmp("do_loopback_cksum", ans[i].sysctl_name) == 0) 142 break; 143 if (i == __arraycount(ans)) { 144 errno = ENOENT; 145 return -1; 146 } 147 148 mib[3] = ans[i].sysctl_num; 149 150 enable = 1; 151 if (rump_sys___sysctl(mib, 4, NULL, NULL, &enable, 152 sizeof(enable)) == -1) 153 return errno; 154 155 return 0; 156 } 157 158 ATF_TC(loopmtu); 159 ATF_TC_HEAD(loopmtu, tc) 160 { 161 162 atf_tc_set_md_var(tc, "descr", "test lo0 fragmentation"); 163 /* PR kern/43664 */ 164 } 165 166 ATF_TC_BODY(loopmtu, tc) 167 { 168 struct sockaddr_in sin; 169 char data[2000]; 170 int s; 171 172 setup(); 173 174 /* open raw socket */ 175 s = rump_sys_socket(PF_INET, SOCK_RAW, 0); 176 if (s == -1) 177 atf_tc_fail_errno("raw socket"); 178 179 /* then, send data */ 180 memset(&sin, 0, sizeof(sin)); 181 sin.sin_family = AF_INET; 182 sin.sin_len = sizeof(sin); 183 sin.sin_port = htons(12345); 184 sin.sin_addr.s_addr = inet_addr("127.0.0.1"); 185 186 /* 187 * Should not fail anymore, PR has been fixed... 188 * 189 * atf_tc_expect_signal(SIGABRT, "PR kern/43664"); 190 */ 191 if (rump_sys_sendto(s, data, sizeof(data), 0, 192 (struct sockaddr *)&sin, sizeof(sin)) == -1) 193 atf_tc_fail_errno("sendto failed"); 194 } 195 196 ATF_TC(loopmtu_csum); 197 ATF_TC_HEAD(loopmtu_csum, tc) 198 { 199 200 atf_tc_set_md_var(tc, "descr", "test lo0 fragmentation with checksums"); 201 /* PR kern/43664 */ 202 } 203 204 ATF_TC_BODY(loopmtu_csum, tc) 205 { 206 struct sockaddr_in sin; 207 char data[2000]; 208 int s; 209 210 setup(); 211 212 ATF_CHECK(enable_locsums() == 0); 213 214 /* open raw socket */ 215 s = rump_sys_socket(PF_INET, SOCK_RAW, 0); 216 if (s == -1) 217 atf_tc_fail_errno("raw socket"); 218 219 /* then, send data */ 220 memset(&sin, 0, sizeof(sin)); 221 sin.sin_family = AF_INET; 222 sin.sin_len = sizeof(sin); 223 sin.sin_port = htons(12345); 224 sin.sin_addr.s_addr = inet_addr("127.0.0.1"); 225 226 /* 227 * Should not fail anymore, PR has been fixed... 228 * 229 * atf_tc_expect_signal(SIGABRT, "PR kern/43664"); 230 */ 231 if (rump_sys_sendto(s, data, sizeof(data), 0, 232 (struct sockaddr *)&sin, sizeof(sin)) == -1) 233 atf_tc_fail_errno("sendto failed"); 234 } 235 236 ATF_TP_ADD_TCS(tp) 237 { 238 239 ATF_TP_ADD_TC(tp, loopmtu); 240 ATF_TP_ADD_TC(tp, loopmtu_csum); 241 242 return atf_no_error(); 243 } 244 245