diff options
Diffstat (limited to 'dist/net/if_loop/t_pr.c')
| -rw-r--r-- | dist/net/if_loop/t_pr.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/dist/net/if_loop/t_pr.c b/dist/net/if_loop/t_pr.c new file mode 100644 index 0000000..a22953f --- /dev/null +++ b/dist/net/if_loop/t_pr.c @@ -0,0 +1,229 @@ +/* $NetBSD: t_pr.c,v 1.7 2012/03/18 09:46:50 jruoho Exp $ */ + +/*- + * Copyright (c) 2010 The NetBSD Foundation, Inc. + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND + * CONTRIBUTORS ``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 FOUNDATION OR CONTRIBUTORS 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 <sys/cdefs.h> +#ifndef lint +__RCSID("$NetBSD: t_pr.c,v 1.7 2012/03/18 09:46:50 jruoho Exp $"); +#endif /* not lint */ + +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/sysctl.h> + +#include <netinet/in.h> +#include <net/route.h> + +#include <rump/rump.h> +#include <rump/rump_syscalls.h> + +#include <atf-c.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "../config/netconfig.c" +#include "../../h_macros.h" + +/* + * Prepare rump, configure interface and route to cause fragmentation + */ +static void +setup(void) +{ + char ifname[IFNAMSIZ]; + struct { + struct rt_msghdr m_rtm; + struct sockaddr_in m_sin; + } m_rtmsg; +#define rtm m_rtmsg.m_rtm +#define rsin m_rtmsg.m_sin + struct ifreq ifr; + int s; + + rump_init(); + + /* first, config lo0 & route */ + strcpy(ifname, "lo0"); + netcfg_rump_if(ifname, "127.0.0.1", "255.0.0.0"); + netcfg_rump_route("127.0.0.1", "255.0.0.0", "127.0.0.1"); + + if ((s = rump_sys_socket(PF_ROUTE, SOCK_RAW, 0)) == -1) + atf_tc_fail_errno("routing socket"); + + /* + * set MTU for interface so that route MTU doesn't + * get overridden by it. + */ + memset(&ifr, 0, sizeof(ifr)); + strcpy(ifr.ifr_name, "lo0"); + ifr.ifr_mtu = 1300; + if (rump_sys_ioctl(s, SIOCSIFMTU, &ifr) == -1) + atf_tc_fail_errno("set mtu"); + + /* change route MTU to 100 */ + memset(&m_rtmsg, 0, sizeof(m_rtmsg)); + rtm.rtm_type = RTM_CHANGE; + rtm.rtm_flags = RTF_STATIC; + rtm.rtm_version = RTM_VERSION; + rtm.rtm_seq = 3; + rtm.rtm_inits = RTV_MTU; + rtm.rtm_addrs = RTA_DST; + rtm.rtm_rmx.rmx_mtu = 100; + rtm.rtm_msglen = sizeof(m_rtmsg); + + memset(&rsin, 0, sizeof(rsin)); + rsin.sin_family = AF_INET; + rsin.sin_len = sizeof(rsin); + rsin.sin_addr.s_addr = inet_addr("127.0.0.1"); + + if (rump_sys_write(s, &m_rtmsg, sizeof(m_rtmsg)) != sizeof(m_rtmsg)) + atf_tc_fail_errno("set route mtu"); + rump_sys_close(s); +} + +/* + * Turn on checksums on loopback interfaces + */ +static int +enable_locsums(void) +{ + struct sysctlnode q, ans[256]; + int mib[5], enable; + size_t alen; + unsigned i; + + mib[0] = CTL_NET; + mib[1] = PF_INET; + mib[2] = IPPROTO_IP; + mib[3] = CTL_QUERY; + alen = sizeof(ans); + + memset(&q, 0, sizeof(q)); + q.sysctl_flags = SYSCTL_VERSION; + + if (rump_sys___sysctl(mib, 4, ans, &alen, &q, sizeof(q)) == -1) + return -1; + + for (i = 0; i < __arraycount(ans); i++) + if (strcmp("do_loopback_cksum", ans[i].sysctl_name) == 0) + break; + if (i == __arraycount(ans)) { + errno = ENOENT; + return -1; + } + + mib[3] = ans[i].sysctl_num; + + enable = 1; + if (rump_sys___sysctl(mib, 4, NULL, NULL, &enable, + sizeof(enable)) == -1) + return errno; + + return 0; +} + +ATF_TC(loopmtu); +ATF_TC_HEAD(loopmtu, tc) +{ + + atf_tc_set_md_var(tc, "descr", + "test lo0 fragmentation (PR kern/43664)"); +} + +ATF_TC_BODY(loopmtu, tc) +{ + struct sockaddr_in sin; + char data[2000]; + int s; + + setup(); + + /* open raw socket */ + s = rump_sys_socket(PF_INET, SOCK_RAW, 0); + if (s == -1) + atf_tc_fail_errno("raw socket"); + + /* then, send data */ + memset(&sin, 0, sizeof(sin)); + sin.sin_family = AF_INET; + sin.sin_len = sizeof(sin); + sin.sin_port = htons(12345); + sin.sin_addr.s_addr = inet_addr("127.0.0.1"); + + if (rump_sys_sendto(s, data, sizeof(data), 0, + (struct sockaddr *)&sin, sizeof(sin)) == -1) + atf_tc_fail_errno("sendto failed"); +} + +ATF_TC(loopmtu_csum); +ATF_TC_HEAD(loopmtu_csum, tc) +{ + + atf_tc_set_md_var(tc, "descr", + "test lo0 fragmentation with checksums (PR kern/43664)"); +} + +ATF_TC_BODY(loopmtu_csum, tc) +{ + struct sockaddr_in sin; + char data[2000]; + int s; + + setup(); + + ATF_CHECK(enable_locsums() == 0); + + /* open raw socket */ + s = rump_sys_socket(PF_INET, SOCK_RAW, 0); + if (s == -1) + atf_tc_fail_errno("raw socket"); + + /* then, send data */ + memset(&sin, 0, sizeof(sin)); + sin.sin_family = AF_INET; + sin.sin_len = sizeof(sin); + sin.sin_port = htons(12345); + sin.sin_addr.s_addr = inet_addr("127.0.0.1"); + + if (rump_sys_sendto(s, data, sizeof(data), 0, + (struct sockaddr *)&sin, sizeof(sin)) == -1) + atf_tc_fail_errno("sendto failed"); +} + +ATF_TP_ADD_TCS(tp) +{ + + ATF_TP_ADD_TC(tp, loopmtu); + ATF_TP_ADD_TC(tp, loopmtu_csum); + + return atf_no_error(); +} + |
