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Add userland tests for route table/lltable rtsock operations.

Browse source 
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D22860
This commit is contained in:
Alexander V. Chernikov 2019-12-28 12:16:40 +00:00
parent 863dc8aff0
commit 775dc8613d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=356146
7 changed files with 2206 additions and 0 deletions
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2
tests/sys/net/Makefile
View file

@ -10,6 +10,8 @@ ATF_TESTS_SH+= if_clone_test
ATF_TESTS_SH+= if_tun_test
ATF_TESTS_SH+= if_vlan
TESTS_SUBDIRS+= routing
# The tests are written to be run in parallel, but doing so leads to random
# panics. I think it's because the kernel's list of interfaces isn't properly
# locked.

14
tests/sys/net/routing/Makefile Normal file
View file

@ -0,0 +1,14 @@
# $FreeBSD$
PACKAGE= tests
TESTSDIR= ${TESTSBASE}/sys/net
ATF_TESTS_C += test_rtsock_l3
ATF_TESTS_C += test_rtsock_lladdr
# Most of the tests operates on a common IPv4/IPv6 prefix,
# so running them in parallel will lead to weird results.
TEST_METADATA+= is_exclusive=true
.include <bsd.test.mk>

766
tests/sys/net/routing/rtsock_common.h Normal file
View file

@ -0,0 +1,766 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Alexander V. Chernikov
*
* 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 AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef _NET_ROUTING_RTSOCK_COMMON_H_
#define _NET_ROUTING_RTSOCK_COMMON_H_
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdbool.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/route.h>
#include <arpa/inet.h>
#include <net/ethernet.h>
#include <netinet/in.h>
#include <netinet6/in6_var.h>
#include <netinet6/nd6.h>
#include <ifaddrs.h>
#include <errno.h>
#include <err.h>
#include <sysexits.h>
#include <atf-c.h>
#include "rtsock_print.h"
void rtsock_update_rtm_len(struct rt_msghdr *rtm);
void rtsock_validate_message(char *buffer, ssize_t len);
void rtsock_add_rtm_sa(struct rt_msghdr *rtm, int addr_type, struct sockaddr *sa);
static int _rtm_seq = 42;
/*
* Checks if the interface cloner module is present for @name.
*/
static int
_check_cloner(char *name)
{
struct if_clonereq ifcr;
char *cp, *buf;
int idx;
int s;
int found = 0;
s = socket(AF_LOCAL, SOCK_DGRAM, 0);
if (s == -1)
err(1, "socket(AF_LOCAL,SOCK_DGRAM)");
memset(&ifcr, 0, sizeof(ifcr));
if (ioctl(s, SIOCIFGCLONERS, &ifcr) < 0)
err(1, "SIOCIFGCLONERS for count");
buf = malloc(ifcr.ifcr_total * IFNAMSIZ);
if (buf == NULL)
err(1, "unable to allocate cloner name buffer");
ifcr.ifcr_count = ifcr.ifcr_total;
ifcr.ifcr_buffer = buf;
if (ioctl(s, SIOCIFGCLONERS, &ifcr) < 0)
err(1, "SIOCIFGCLONERS for names");
/*
* In case some disappeared in the mean time, clamp it down.
*/
if (ifcr.ifcr_count > ifcr.ifcr_total)
ifcr.ifcr_count = ifcr.ifcr_total;
for (cp = buf, idx = 0; idx < ifcr.ifcr_count; idx++, cp += IFNAMSIZ) {
if (!strcmp(cp, name)) {
found = 1;
break;
}
}
free(buf);
close(s);
return (found);
}
/*
* Tries to ensure if_tap is loaded.
* Checks list of interface cloners first, then tries
* to load the module.
*
* return nonzero on success.
*/
static int
_enforce_cloner_loaded(char *cloner_name)
{
if (_check_cloner(cloner_name))
return (1);
/* need to load */
RLOG("trying to load %s driver", cloner_name);
char cmd[64];
snprintf(cmd, sizeof(cmd), "/sbin/kldload if_%s", cloner_name);
int ret = system(cmd);
if (ret != 0) {
RLOG("'%s' failed, error %d", cmd, ret);
return (0);
}
return (1);
}
static int
iface_create_cloned(char *ifname_ptr)
{
struct ifreq ifr;
int s;
char prefix[IFNAMSIZ];
char *src, *dst;
for (src = ifname_ptr, dst = prefix; *src && isalpha(*src); src++)
*dst++ = *src;
*dst = '\0';
if (_enforce_cloner_loaded(prefix) == 0)
return (0);
memset(&ifr, 0, sizeof(struct ifreq));
s = socket(AF_LOCAL, SOCK_DGRAM, 0);
strlcpy(ifr.ifr_name, ifname_ptr, sizeof(ifr.ifr_name));
RLOG("creating iface %s %s", prefix, ifr.ifr_name);
if (ioctl(s, SIOCIFCREATE2, &ifr) < 0)
err(1, "SIOCIFCREATE2");
strlcpy(ifname_ptr, ifr.ifr_name, IFNAMSIZ);
RLOG("created interface %s", ifname_ptr);
return (1);
}
static int
iface_destroy(char *ifname)
{
struct ifreq ifr;
int s;
s = socket(AF_LOCAL, SOCK_DGRAM, 0);
strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
RLOG("destroying interface %s", ifname);
if (ioctl(s, SIOCIFDESTROY, &ifr) < 0)
return (0);
return (1);
}
/*
* Open tunneling device such as tuntap and returns fd.
*/
int
iface_open(char *ifname)
{
char path[256];
snprintf(path, sizeof(path), "/dev/%s", ifname);
RLOG("opening interface %s", ifname);
int fd = open(path, O_RDWR|O_EXCL);
if (fd == -1) {
RLOG_ERRNO("unable to open interface %s", ifname);
return (-1);
}
return (fd);
}
/*
* Sets primary IPv4 addr.
* Returns 0 on success.
*/
inline int
iface_setup_addr(char *ifname, char *addr, int plen)
{
char cmd[512];
char *af;
if (strchr(addr, ':'))
af = "inet6";
else
af = "inet";
RLOG("setting af_%s %s/%d on %s", af, addr, plen, ifname);
snprintf(cmd, sizeof(cmd), "/sbin/ifconfig %s %s %s/%d", ifname,
af, addr, plen);
return system(cmd);
}
/*
* Removes primary IPv4 prefix.
* Returns 0 on success.
*/
inline int
iface_delete_addr(char *ifname, char *addr)
{
char cmd[512];
if (strchr(addr, ':')) {
RLOG("removing IPv6 %s from %s", addr, ifname);
snprintf(cmd, sizeof(cmd), "/sbin/ifconfig %s inet6 %s delete", ifname, addr);
} else {
RLOG("removing IPv4 %s from %s", addr, ifname);
snprintf(cmd, sizeof(cmd), "/sbin/ifconfig %s -alias %s", ifname, addr);
}
return system(cmd);
}
int
iface_turn_up(char *ifname)
{
struct ifreq ifr;
int s;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
RLOG_ERRNO("socket");
return (-1);
}
memset(&ifr, 0, sizeof(struct ifreq));
strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
RLOG_ERRNO("ioctl(SIOCGIFFLAGS)");
return (-1);
}
/* Update flags */
if ((ifr.ifr_flags & IFF_UP) == 0) {
ifr.ifr_flags |= IFF_UP;
if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
RLOG_ERRNO("ioctl(SIOSGIFFLAGS)");
return (-1);
}
RLOG("turned interface %s up", ifname);
}
return (0);
}
/*
* Removes ND6_IFF_IFDISABLED from IPv6 interface flags.
* Returns 0 on success.
*/
int
iface_enable_ipv6(char *ifname)
{
struct in6_ndireq nd;
int s;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
err(1, "socket");
}
memset(&nd, 0, sizeof(nd));
strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
RLOG_ERRNO("ioctl(SIOCGIFINFO_IN6)");
return (-1);
}
/* Update flags */
if ((nd.ndi.flags & ND6_IFF_IFDISABLED) != 0) {
nd.ndi.flags &= ~ND6_IFF_IFDISABLED;
if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) {
RLOG_ERRNO("ioctl(SIOCSIFINFO_IN6)");
return (-1);
}
RLOG("enabled IPv6 for %s", ifname);
}
return (0);
}
#define SA_F_IGNORE_IFNAME 0x01
#define SA_F_IGNORE_IFTYPE 0x02
#define SA_F_IGNORE_MEMCMP 0x04
int
sa_equal_msg_flags(const struct sockaddr *a, const struct sockaddr *b, char *msg, size_t sz, int flags)
{
char a_s[64], b_s[64];
const struct sockaddr_in *a4, *b4;
const struct sockaddr_in6 *a6, *b6;
const struct sockaddr_dl *al, *bl;
if (a == NULL) {
snprintf(msg, sz, "first sa is NULL");
return 0;
}
if (b == NULL) {
snprintf(msg, sz, "second sa is NULL");
return 0;
}
if (a->sa_family != b->sa_family) {
snprintf(msg, sz, "family: %d vs %d", a->sa_family, b->sa_family);
return 0;
}
if (a->sa_len != b->sa_len) {
snprintf(msg, sz, "len: %d vs %d", a->sa_len, b->sa_len);
return 0;
}
switch (a->sa_family) {
case AF_INET:
a4 = (const struct sockaddr_in *)a;
b4 = (const struct sockaddr_in *)b;
if (a4->sin_addr.s_addr != b4->sin_addr.s_addr) {
inet_ntop(AF_INET, &a4->sin_addr, a_s, sizeof(a_s));
inet_ntop(AF_INET, &b4->sin_addr, b_s, sizeof(b_s));
snprintf(msg, sz, "addr diff: %s vs %s", a_s, b_s);
return 0;
}
if (a4->sin_port != b4->sin_port) {
snprintf(msg, sz, "port diff: %d vs %d",
ntohs(a4->sin_port), ntohs(b4->sin_port));
//return 0;
}
const uint32_t *a32, *b32;
a32 = (const uint32_t *)a4->sin_zero;
b32 = (const uint32_t *)b4->sin_zero;
if ((*a32 != *b32) || (*(a32 + 1) != *(b32 + 1))) {
snprintf(msg, sz, "zero diff: 0x%08X%08X vs 0x%08X%08X",
ntohl(*a32), ntohl(*(a32 + 1)),
ntohl(*b32), ntohl(*(b32 + 1)));
return 0;
}
return 1;
case AF_INET6:
a6 = (const struct sockaddr_in6 *)a;
b6 = (const struct sockaddr_in6 *)b;
if (!IN6_ARE_ADDR_EQUAL(&a6->sin6_addr, &b6->sin6_addr)) {
inet_ntop(AF_INET6, &a6->sin6_addr, a_s, sizeof(a_s));
inet_ntop(AF_INET6, &b6->sin6_addr, a_s, sizeof(a_s));
snprintf(msg, sz, "addr diff: %s vs %s", a_s, b_s);
return 0;
}
if (a6->sin6_scope_id != b6->sin6_scope_id) {
snprintf(msg, sz, "scope diff: %u vs %u", a6->sin6_scope_id, b6->sin6_scope_id);
return 0;
}
break;
case AF_LINK:
al = (const struct sockaddr_dl *)a;
bl = (const struct sockaddr_dl *)b;
if (al->sdl_index != bl->sdl_index) {
snprintf(msg, sz, "sdl_index diff: %u vs %u", al->sdl_index, bl->sdl_index);
return 0;
}
if ((al->sdl_alen != bl->sdl_alen) || (memcmp(LLADDR(al), LLADDR(bl), al->sdl_alen) != 0)) {
char abuf[64], bbuf[64];
sa_print_hd(abuf, sizeof(abuf), LLADDR(al), al->sdl_alen);
sa_print_hd(bbuf, sizeof(bbuf), LLADDR(bl), bl->sdl_alen);
snprintf(msg, sz, "sdl_alen diff: {%s} (%d) vs {%s} (%d)",
abuf, al->sdl_alen, bbuf, bl->sdl_alen);
return 0;
}
if (((flags & SA_F_IGNORE_IFTYPE) == 0) && (al->sdl_type != bl->sdl_type)) {
snprintf(msg, sz, "sdl_type diff: %u vs %u", al->sdl_type, bl->sdl_type);
return 0;
}
if (((flags & SA_F_IGNORE_IFNAME) == 0) && ((al->sdl_nlen != bl->sdl_nlen) ||
(memcmp(al->sdl_data, bl->sdl_data, al->sdl_nlen) != 0))) {
char abuf[64], bbuf[64];
memcpy(abuf, al->sdl_data, al->sdl_nlen);
abuf[al->sdl_nlen] = '\0';
memcpy(bbuf, bl->sdl_data, bl->sdl_nlen);
abuf[bl->sdl_nlen] = '\0';
snprintf(msg, sz, "sdl_nlen diff: {%s} (%d) vs {%s} (%d)",
abuf, al->sdl_nlen, bbuf, bl->sdl_nlen);
return 0;
}
if (flags & SA_F_IGNORE_MEMCMP)
return 1;
break;
}
if (memcmp(a, b, a->sa_len)) {
int i;
for (i = 0; i < a->sa_len; i++)
if (((const char *)a)[i] != ((const char *)b)[i])
break;
sa_print(a, 1);
sa_print(b, 1);
snprintf(msg, sz, "overall memcmp() reports diff for af %d offset %d",
a->sa_family, i);
return 0;
}
return 1;
}
int
sa_equal_msg(const struct sockaddr *a, const struct sockaddr *b, char *msg, size_t sz)
{
return sa_equal_msg_flags(a, b, msg, sz, 0);
}
void
sa_fill_mask4(struct sockaddr_in *sin, int plen)
{
memset(sin, 0, sizeof(struct sockaddr_in));
sin->sin_family = AF_INET;
sin->sin_len = sizeof(struct sockaddr_in);
sin->sin_addr.s_addr = htonl(plen ? ~((1 << (32 - plen)) - 1) : 0);
}
void
sa_fill_mask6(struct sockaddr_in6 *sin6, uint8_t mask)
{
uint32_t *cp;
memset(sin6, 0, sizeof(struct sockaddr_in6));
sin6->sin6_family = AF_INET6;
sin6->sin6_len = sizeof(struct sockaddr_in6);
for (cp = (uint32_t *)&sin6->sin6_addr; mask >= 32; mask -= 32)
*cp++ = 0xFFFFFFFF;
if (mask > 0)
*cp = htonl(mask ? ~((1 << (32 - mask)) - 1) : 0);
}
/* 52:54:00:14:e3:10 */
#define ETHER_MAC_MAX_LENGTH 17
int
sa_convert_str_to_sa(const char *_addr, struct sockaddr *sa)
{
int error;
int af = AF_UNSPEC;
char *addr = strdup(_addr);
int retcode = 0;
/* classify AF by str */
if (strchr(addr, ':')) {
/* inet6 or ether */
char *k;
int delim_cnt = 0;
for (k = addr; *k; k++)
if (*k == ':')
delim_cnt++;
af = AF_INET6;
if (delim_cnt == 5) {
k = strchr(addr, '%');
if (k != NULL && (k - addr) <= ETHER_MAC_MAX_LENGTH)
af = AF_LINK;
}
} else if (strchr(addr, '.'))
af = AF_INET;
/* */
char *delimiter;
int ifindex = 0;
char *ifname = NULL;
if ((delimiter = strchr(addr, '%')) != NULL) {
*delimiter = '\0';
ifname = delimiter + 1;
ifindex = if_nametoindex(ifname);
if (ifindex == 0)
RLOG("unable to find ifindex for '%s'", ifname);
else
RLOG("if %s mapped to %d", ifname, ifindex);
}
if (af == AF_INET6) {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
memset(sin6, 0, sizeof(struct sockaddr_in6));
sin6->sin6_family = AF_INET6;
sin6->sin6_len = sizeof(struct sockaddr_in6);
sin6->sin6_scope_id = ifindex;
error = inet_pton(AF_INET6, addr, &sin6->sin6_addr);
if (error != 1)
RLOG_ERRNO("inet_ntop() failed: ret=%d", error);
else
retcode = 1;
} else if (af == AF_INET) {
struct sockaddr_in *sin = (struct sockaddr_in *)sa;
memset(sin, 0, sizeof(struct sockaddr_in));
sin->sin_family = AF_INET;
sin->sin_len = sizeof(struct sockaddr_in);
error = inet_pton(AF_INET, addr, &sin->sin_addr);
if (error != 1)
RLOG("inet_ntop() failed: ret=%d", error);
else
retcode = 1;
} else if (af == AF_LINK) {
struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
memset(sdl, 0, sizeof(struct sockaddr_dl));
sdl->sdl_family = AF_LINK;
sdl->sdl_len = sizeof(struct sockaddr_dl);
sdl->sdl_index = ifindex;
sdl->sdl_alen = 6;
struct ether_addr *ea = (struct ether_addr *)LLADDR(sdl);
if (ether_aton_r(addr, ea) == NULL)
RLOG("ether_aton() failed");
else
retcode = 1;
}
return (retcode);
}
int
rtsock_setup_socket()
{
int fd;
int af = AF_UNSPEC; /* 0 to capture messages from all AFs */
fd = socket(PF_ROUTE, SOCK_RAW, af);
ATF_REQUIRE_MSG(fd != -1, "rtsock open failed: %s", strerror(errno));
/* Listen for our messages */
int on = 1;
if (setsockopt(fd, SOL_SOCKET,SO_USELOOPBACK, &on, sizeof(on)) < 0)
RLOG_ERRNO("setsockopt failed");
return (fd);
}
ssize_t
rtsock_send_rtm(int fd, struct rt_msghdr *rtm)
{
int my_errno;
ssize_t len;
rtsock_update_rtm_len(rtm);
len = write(fd, rtm, rtm->rtm_msglen);
my_errno = errno;
RTSOCK_ATF_REQUIRE_MSG(rtm, len == rtm->rtm_msglen,
"rtsock write failed: want %d got %zd (%s)",
rtm->rtm_msglen, len, strerror(my_errno));
return (len);
}
struct rt_msghdr *
rtsock_read_rtm(int fd, char *buffer, size_t buflen)
{
ssize_t len;
len = read(fd, buffer, buflen);
int my_errno = errno;
ATF_REQUIRE_MSG(len > 0, "rtsock read failed: %s", strerror(my_errno));
rtsock_validate_message(buffer, len);
return ((struct rt_msghdr *)buffer);
}
struct rt_msghdr *
rtsock_read_rtm_reply(int fd, char *buffer, size_t buflen, int seq)
{
struct rt_msghdr *rtm;
while (true) {
rtm = rtsock_read_rtm(fd, buffer, buflen);
if (rtm->rtm_pid != getpid())
continue;
if (rtm->rtm_seq != seq)
continue;
return (rtm);
}
/* NOTREACHED */
}
void
rtsock_prepare_route_message_base(struct rt_msghdr *rtm, int cmd)
{
memset(rtm, 0, sizeof(struct rt_msghdr));
rtm->rtm_type = cmd;
rtm->rtm_version = RTM_VERSION;
rtm->rtm_seq = _rtm_seq++;
}
void
rtsock_prepare_route_message(struct rt_msghdr *rtm, int cmd, struct sockaddr *dst,
struct sockaddr *mask, struct sockaddr *gw)
{
rtsock_prepare_route_message_base(rtm, cmd);
if (dst != NULL)
rtsock_add_rtm_sa(rtm, RTA_DST, dst);
if (gw != NULL) {
rtsock_add_rtm_sa(rtm, RTA_GATEWAY, gw);
rtm->rtm_flags |= RTF_GATEWAY;
}
if (mask != NULL)
rtsock_add_rtm_sa(rtm, RTA_NETMASK, mask);
}
void
rtsock_add_rtm_sa(struct rt_msghdr *rtm, int addr_type, struct sockaddr *sa)
{
char *ptr = (char *)(rtm + 1);
for (int i = 0; i < RTAX_MAX; i++) {
if (rtm->rtm_addrs & (1 << i)) {
/* add */
ptr += ALIGN(((struct sockaddr *)ptr)->sa_len);
}
}
rtm->rtm_addrs |= addr_type;
memcpy(ptr, sa, sa->sa_len);
}
struct sockaddr *
rtsock_find_rtm_sa(struct rt_msghdr *rtm, int addr_type)
{
char *ptr = (char *)(rtm + 1);
for (int i = 0; i < RTAX_MAX; i++) {
if (rtm->rtm_addrs & (1 << i)) {
if (addr_type == (1 << i))
return ((struct sockaddr *)ptr);
/* add */
ptr += ALIGN(((struct sockaddr *)ptr)->sa_len);
}
}
return (NULL);
}
size_t
rtsock_calc_rtm_len(struct rt_msghdr *rtm)
{
size_t len = sizeof(struct rt_msghdr);
char *ptr = (char *)(rtm + 1);
for (int i = 0; i < RTAX_MAX; i++) {
if (rtm->rtm_addrs & (1 << i)) {
/* add */
int sa_len = ALIGN(((struct sockaddr *)ptr)->sa_len);
len += sa_len;
ptr += sa_len;
}
}
return len;
}
void
rtsock_update_rtm_len(struct rt_msghdr *rtm)
{
rtm->rtm_msglen = rtsock_calc_rtm_len(rtm);
}
static void
_validate_route_message(struct rt_msghdr *rtm)
{
struct sockaddr *sa;
size_t parsed_len = sizeof(struct rt_msghdr);
int len = rtm->rtm_msglen;
sa = (struct sockaddr *)(rtm + 1);
for (int i = 0; i < RTAX_MAX; i++) {
if ((rtm->rtm_addrs & (1 << i)) == 0)
continue;
parsed_len += SA_SIZE(sa);
RTSOCK_ATF_REQUIRE_MSG(rtm, parsed_len <= len,
"SA %d: len %d exceeds msg size %d", i, (int)sa->sa_len, len);
if (sa->sa_family == AF_LINK) {
struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
int data_len = sdl->sdl_nlen + sdl->sdl_alen;
data_len += offsetof(struct sockaddr_dl, sdl_data);
RTSOCK_ATF_REQUIRE_MSG(rtm, data_len <= len,
"AF_LINK data size exceeds total len: %u vs %u",
data_len, len);
}
sa = (struct sockaddr *)((char *)sa + SA_SIZE(sa));
}
RTSOCK_ATF_REQUIRE_MSG(rtm, parsed_len == rtm->rtm_msglen,
"message len != parsed len: expected %d parsed %d",
rtm->rtm_msglen, (int)parsed_len);
}
/*
* Raises error if base syntax checks fails.
*/
void
rtsock_validate_message(char *buffer, ssize_t len)
{
struct rt_msghdr *rtm;
ATF_REQUIRE_MSG(len > 0, "read() return %zd, error: %s", len, strerror(errno));
rtm = (struct rt_msghdr *)buffer;
ATF_REQUIRE_MSG(rtm->rtm_version == RTM_VERSION, "unknown RTM_VERSION: expected %d got %d",
RTM_VERSION, rtm->rtm_version);
ATF_REQUIRE_MSG(rtm->rtm_msglen <= len, "wrong message length: expected %d got %d",
(int)len, (int)rtm->rtm_msglen);
switch (rtm->rtm_type) {
case RTM_GET:
case RTM_ADD:
case RTM_DELETE:
case RTM_CHANGE:
_validate_route_message(rtm);
break;
}
}
#endif

164
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Alexander V. Chernikov
*
* 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 AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef _NET_ROUTING_RTSOCK_CONFIG_H_
#define _NET_ROUTING_RTSOCK_CONFIG_H_
struct rtsock_test_config {
int ifindex;
char net4_str[INET_ADDRSTRLEN];
char addr4_str[INET_ADDRSTRLEN];
char net6_str[INET6_ADDRSTRLEN];
char addr6_str[INET6_ADDRSTRLEN];
struct sockaddr_in net4;
struct sockaddr_in mask4;
struct sockaddr_in addr4;
struct sockaddr_in6 net6;
struct sockaddr_in6 mask6;
struct sockaddr_in6 addr6;
int plen4;
int plen6;
char *remote_lladdr;
char *ifname;
bool autocreated_interface;
int rtsock_fd;
};
struct rtsock_test_config *
config_setup_base(const atf_tc_t *tc)
{
struct rtsock_test_config *c;
c = calloc(1, sizeof(struct rtsock_test_config));
c->rtsock_fd = -1;
return c;
}
struct rtsock_test_config *
config_setup(const atf_tc_t *tc)
{
struct rtsock_test_config *c;
char buf[64], *s;
const char *key;
int mask;
c = config_setup_base(tc);
key = atf_tc_get_config_var_wd(tc, "rtsock.v4prefix", "192.0.2.0/24");
strlcpy(buf, key, sizeof(buf));
if ((s = strchr(buf, '/')) == NULL)
return (NULL);
*s++ = '\0';
mask = strtol(s, NULL, 10);
if (mask < 0 || mask > 32)
return (NULL);
c->plen4 = mask;
inet_pton(AF_INET, buf, &c->net4.sin_addr);
c->net4.sin_len = sizeof(struct sockaddr_in);
c->net4.sin_family = AF_INET;
c->addr4.sin_len = sizeof(struct sockaddr_in);
c->addr4.sin_family = AF_INET;
sa_fill_mask4(&c->mask4, c->plen4);
/* Fill in interface IPv4 address. Assume the first address in net */
c->addr4.sin_addr.s_addr = htonl(ntohl(c->net4.sin_addr.s_addr) + 1);
inet_ntop(AF_INET, &c->net4.sin_addr, c->net4_str, INET_ADDRSTRLEN);
inet_ntop(AF_INET, &c->addr4.sin_addr, c->addr4_str, INET_ADDRSTRLEN);
key = atf_tc_get_config_var_wd(tc, "rtsock.v6prefix", "2001:DB8::/32");
strlcpy(buf, key, sizeof(buf));
if ((s = strchr(buf, '/')) == NULL)
return (NULL);
*s++ = '\0';
mask = strtol(s, NULL, 10);
if (mask < 0 || mask > 128)
return (NULL);
c->plen6 = mask;
inet_pton(AF_INET6, buf, &c->net6.sin6_addr);
c->net6.sin6_len = sizeof(struct sockaddr_in6);
c->net6.sin6_family = AF_INET6;
c->addr6.sin6_len = sizeof(struct sockaddr_in6);
c->addr6.sin6_family = AF_INET6;
sa_fill_mask6(&c->mask6, c->plen6);
/* Fill in interface IPv6 address. Assume the first address in net */
memcpy(&c->addr6.sin6_addr, &c->net6.sin6_addr, sizeof(struct in6_addr));
#define _s6_addr32 __u6_addr.__u6_addr32
c->addr6.sin6_addr._s6_addr32[3] = htonl(ntohl(c->net6.sin6_addr._s6_addr32[3]) + 1);
#undef _s6_addr32
inet_ntop(AF_INET6, &c->net6.sin6_addr, c->net6_str, INET6_ADDRSTRLEN);
inet_ntop(AF_INET6, &c->addr6.sin6_addr, c->addr6_str, INET6_ADDRSTRLEN);
c->ifname = strdup(atf_tc_get_config_var_wd(tc, "rtsock.ifname", "tap4242"));
c->autocreated_interface = atf_tc_get_config_var_as_bool_wd(tc, "rtsock.create_interface", true);
if (c->autocreated_interface && (if_nametoindex(c->ifname) == 0))
{
/* create our own interface */
char new_ifname[IFNAMSIZ];
strlcpy(new_ifname, c->ifname, sizeof(new_ifname));
int ret = iface_create_cloned(new_ifname);
ATF_REQUIRE_MSG(ret != 0, "tap interface creation failed: %s", strerror(errno));
c->ifname = strdup(new_ifname);
}
c->ifindex = if_nametoindex(c->ifname);
ATF_REQUIRE_MSG(c->ifindex != 0, "inteface %s not found", c->ifname);
c->remote_lladdr = strdup(atf_tc_get_config_var_wd(tc,
"rtsock.remote_lladdr", "00:00:5E:00:53:42"));
return (c);
}
void
config_generic_cleanup(struct rtsock_test_config *c)
{
if (c->ifname != NULL && c->autocreated_interface) {
iface_destroy(c->ifname);
free(c->ifname);
c->ifname = NULL;
}
}
void
config_describe_root_test(atf_tc_t *tc, char *test_descr)
{
atf_tc_set_md_var(tc, "descr", test_descr);
// Adding/deleting prefix requires root privileges
atf_tc_set_md_var(tc, "require.user", "root");
}
#endif

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Alexander V. Chernikov
*
* 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 AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef _NET_ROUTING_RTSOCK_PRINT_H_
#define _NET_ROUTING_RTSOCK_PRINT_H_
#define RLOG(_fmt, ...) printf("%s: " _fmt "\n", __func__, ##__VA_ARGS__)
#define RLOG_ERRNO(_fmt, ...) do { \
printf("%s: " _fmt, __func__, ##__VA_ARGS__); \
printf(": %s\n", strerror(errno)); \
} while(0)
#define RTSOCK_ATF_REQUIRE_MSG(_rtm, _cond, _fmt, ...) do { \
if (!(_cond)) { \
printf("-- CONDITION FAILED, rtm dump --\n\n");\
rtsock_print_rtm(_rtm); \
} \
ATF_REQUIRE_MSG(_cond, _fmt, ##__VA_ARGS__); \
} while (0);
/* from route.c */
static const char *const msgtypes[] = {
"",
"RTM_ADD",
"RTM_DELETE",
"RTM_CHANGE",
"RTM_GET",
"RTM_LOSING",
"RTM_REDIRECT",
"RTM_MISS",
"RTM_LOCK",
"RTM_OLDADD",
"RTM_OLDDEL",
"RTM_RESOLVE",
"RTM_NEWADDR",
"RTM_DELADDR",
"RTM_IFINFO",
"RTM_NEWMADDR",
"RTM_DELMADDR",
"RTM_IFANNOUNCE",
"RTM_IEEE80211",
};
static const char metricnames[] =
"\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire"
"\1mtu";
static const char routeflags[] =
"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE"
"\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE"
"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3"
"\024FIXEDMTU\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY";
static const char ifnetflags[] =
"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
"\017LINK2\020MULTICAST";
static const char addrnames[] =
"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
static int
_printb(char *buf, size_t bufsize, int b, const char *str)
{
int i;
int gotsome = 0;
char *pbuf = buf;
if (b == 0) {
*pbuf = '\0';
return (0);
}
while ((i = *str++) != 0) {
if (b & (1 << (i-1))) {
if (gotsome == 0)
i = '<';
else
i = ',';
*pbuf++ = i;
gotsome = 1;
for (; (i = *str) > 32; str++)
*pbuf++ = i;
} else
while (*str > 32)
str++;
}
if (gotsome)
*pbuf++ = '>';
*pbuf = '\0';
return (int)(pbuf - buf);
}
const char *
rtsock_print_cmdtype(int cmd)
{
return (msgtypes[cmd]);
}
#define _PRINTX(fmt, ...) do { \
one_len = snprintf(ptr, rem_len, fmt, __VA_ARGS__); \
ptr += one_len; \
rem_len -= one_len; \
} while(0)
void
sa_print_hd(char *buf, int buflen, const char *data, int len)
{
char *ptr;
int one_len, rem_len;
ptr = buf;
rem_len = buflen;
const char *last_char = NULL;
unsigned char v;
int repeat_count = 0;
for (int i = 0; i < len; i++) {
if (last_char && *last_char == data[i]) {
repeat_count++;
continue;
}
if (repeat_count > 1) {
_PRINTX("{%d}", repeat_count);
repeat_count = 0;
}
v = ((const unsigned char *)data)[i];
if (last_char == NULL)
_PRINTX("%02X", v);
else
_PRINTX(", %02X", v);
last_char = &data[i];
repeat_count = 1;
}
if (repeat_count > 1)
snprintf(ptr, rem_len, "{%d}", repeat_count);
}
#undef _PRINTX
void
sa_print(const struct sockaddr *sa, int include_hexdump)
{
char hdbuf[512], abuf[64];
char ifbuf[128];
const struct sockaddr_dl *sdl;
const struct sockaddr_in6 *sin6;
const struct sockaddr_in *sin;
int i;
switch (sa->sa_family) {
case AF_INET:
sin = (struct sockaddr_in *)sa;
inet_ntop(AF_INET, &sin->sin_addr, abuf, sizeof(abuf));
printf(" af=inet len=%d addr=%s", sa->sa_len, abuf);
break;
case AF_INET6:
sin6 = (struct sockaddr_in6 *)sa;
inet_ntop(AF_INET6, &sin6->sin6_addr, abuf, sizeof(abuf));
int scope_id = sin6->sin6_scope_id;
printf(" af=inet6 len=%d addr=%s", sa->sa_len, abuf);
if (scope_id != 0) {
memset(ifbuf, 0, sizeof(ifbuf));
if_indextoname(scope_id, ifbuf);
printf(" scope_id=%d if_name=%s", scope_id, ifbuf);
}
break;
case AF_LINK:
sdl = (const struct sockaddr_dl *)sa;
int sdl_index = sdl->sdl_index;
if (sdl_index != 0) {
memset(ifbuf, 0, sizeof(ifbuf));
if_indextoname(sdl_index, ifbuf);
printf(" af=link len=%d sdl_index=%d if_name=%s", sdl->sdl_len, sdl_index, ifbuf);
}
if (sdl->sdl_nlen) {
char _ifname[IFNAMSIZ];
memcpy(_ifname, sdl->sdl_data, sdl->sdl_nlen);
_ifname[sdl->sdl_nlen] = '\0';
printf(" name=%s", _ifname);
}
if (sdl->sdl_alen) {
printf(" addr=");
const char *lladdr = LLADDR(sdl);
for (int i = 0; i < sdl->sdl_alen; i++) {
if (i + 1 < sdl->sdl_alen)
printf("%02X:", ((const unsigned char *)lladdr)[i]);
else
printf("%02X", ((const unsigned char *)lladdr)[i]);
}
}
break;
default:
printf(" af=%d len=%d", sa->sa_family, sa->sa_len);
}
if (include_hexdump) {
sa_print_hd(hdbuf, sizeof(hdbuf), ((char *)sa), sa->sa_len);
printf(" hd={%s}", hdbuf);
}
printf("\n");
}
/*
got message of size 240 on Mon Dec 16 09:23:31 2019
RTM_ADD: Add Route: len 240, pid: 25534, seq 2, errno 0, flags:<HOST,DONE,LLINFO,STATIC>
locks: inits:
sockaddrs: <DST,GATEWAY>
*/
void
rtsock_print_rtm(struct rt_msghdr *rtm)
{
struct timeval tv;
struct tm tm_res;
char buf[64];
gettimeofday(&tv, NULL);
localtime_r(&tv.tv_sec, &tm_res);
strftime(buf, sizeof(buf), "%F %T", &tm_res);
printf("Got message of size %hu on %s\n", rtm->rtm_msglen, buf);
char flags_buf[256];
_printb(flags_buf, sizeof(flags_buf), rtm->rtm_flags, routeflags);
printf("%s: len %hu, pid: %d, seq %d, errno %d, flags: %s\n", msgtypes[rtm->rtm_type],
rtm->rtm_msglen, rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno, flags_buf);
_printb(flags_buf, sizeof(flags_buf), rtm->rtm_addrs, addrnames);
printf("sockaddrs: 0x%X %s\n", rtm->rtm_addrs, flags_buf);
char *ptr = (char *)(rtm + 1);
for (int i = 0; i < RTAX_MAX; i++) {
if (rtm->rtm_addrs & (1 << i)) {
struct sockaddr *sa = (struct sockaddr *)ptr;
sa_print(sa, 1);
/* add */
ptr += ALIGN(((struct sockaddr *)ptr)->sa_len);
}
}
printf("\n");
}
#endif

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Alexander V. Chernikov
*
* 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 AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#include "rtsock_common.h"
#include "rtsock_config.h"
static inline struct rtsock_test_config *
presetup_ipv6(const atf_tc_t *tc)
{
struct rtsock_test_config *c;
int ret;
c = config_setup(tc);
ret = iface_turn_up(c->ifname);
ATF_REQUIRE_MSG(ret == 0, "Unable to turn up %s", c->ifname);
ret = iface_enable_ipv6(c->ifname);
ATF_REQUIRE_MSG(ret == 0, "Unable to enable IPv6 on %s", c->ifname);
ret = iface_setup_addr(c->ifname, c->addr6_str, c->plen6);
c->rtsock_fd = rtsock_setup_socket();
return (c);
}
static inline struct rtsock_test_config *
presetup_ipv4(const atf_tc_t *tc)
{
struct rtsock_test_config *c;
int ret;
c = config_setup(tc);
/* assumes ifconfig doing IFF_UP */
ret = iface_setup_addr(c->ifname, c->addr4_str, c->plen4);
ATF_REQUIRE_MSG(ret == 0, "ifconfig failed");
/* Actually open interface, so kernel writes won't fail */
if (c->autocreated_interface) {
ret = iface_open(c->ifname);
ATF_REQUIRE_MSG(ret >= 0, "unable to open interface %s", c->ifname);
}
c->rtsock_fd = rtsock_setup_socket();
return (c);
}
static void
prepare_v4_network(struct rtsock_test_config *c, struct sockaddr_in *dst,
struct sockaddr_in *mask, struct sockaddr_in *gw)
{
/* Create IPv4 subnetwork with smaller prefix */
sa_fill_mask4(mask, c->plen4 + 1);
*dst = c->net4;
/* Calculate GW as last-net-address - 1 */
*gw = c->net4;
gw->sin_addr.s_addr = htonl((ntohl(c->net4.sin_addr.s_addr) | ~ntohl(c->mask4.sin_addr.s_addr)) - 1);
sa_print((struct sockaddr *)dst, 0);
sa_print((struct sockaddr *)mask, 0);
sa_print((struct sockaddr *)gw, 0);
}
static void
prepare_v6_network(struct rtsock_test_config *c, struct sockaddr_in6 *dst,
struct sockaddr_in6 *mask, struct sockaddr_in6 *gw)
{
/* Create IPv6 subnetwork with smaller prefix */
sa_fill_mask6(mask, c->plen6 + 1);
*dst = c->net6;
/* Calculate GW as last-net-address - 1 */
*gw = c->net6;
#define _s6_addr32 __u6_addr.__u6_addr32
gw->sin6_addr._s6_addr32[0] = htonl((ntohl(gw->sin6_addr._s6_addr32[0]) | ~ntohl(c->mask6.sin6_addr._s6_addr32[0])));
gw->sin6_addr._s6_addr32[1] = htonl((ntohl(gw->sin6_addr._s6_addr32[1]) | ~ntohl(c->mask6.sin6_addr._s6_addr32[1])));
gw->sin6_addr._s6_addr32[2] = htonl((ntohl(gw->sin6_addr._s6_addr32[2]) | ~ntohl(c->mask6.sin6_addr._s6_addr32[2])));
gw->sin6_addr._s6_addr32[3] = htonl((ntohl(gw->sin6_addr._s6_addr32[3]) | ~ntohl(c->mask6.sin6_addr._s6_addr32[3])) - 1);
#undef _s6_addr32
sa_print((struct sockaddr *)dst, 0);
sa_print((struct sockaddr *)mask, 0);
sa_print((struct sockaddr *)gw, 0);
}
static void
prepare_route_message(struct rt_msghdr *rtm, int cmd, struct sockaddr *dst,
struct sockaddr *mask, struct sockaddr *gw)
{
rtsock_prepare_route_message(rtm, cmd, dst, mask, gw);
if (cmd == RTM_ADD || cmd == RTM_CHANGE)
rtm->rtm_flags |= RTF_STATIC;
}
static void
verify_route_message(struct rt_msghdr *rtm, int cmd, struct sockaddr *dst,
struct sockaddr *mask, struct sockaddr *gw)
{
char msg[512];
struct sockaddr *sa;
int ret;
RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_type == cmd,
"expected %s message, got %d (%s)", rtsock_print_cmdtype(cmd),
rtm->rtm_type, rtsock_print_cmdtype(rtm->rtm_type));
RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_errno == 0,
"got got errno %d as message reply", rtm->rtm_errno);
RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->_rtm_spare1 == 0,
"expected rtm_spare==0, got %d", rtm->_rtm_spare1);
/* kernel MAY return more sockaddrs, including RTA_IFP / RTA_IFA, so verify the needed ones */
if (dst != NULL) {
sa = rtsock_find_rtm_sa(rtm, RTA_DST);
RTSOCK_ATF_REQUIRE_MSG(rtm, sa != NULL, "DST is not set");
ret = sa_equal_msg(sa, dst, msg, sizeof(msg));
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "DST sa diff: %s", msg);
}
if (mask != NULL) {
sa = rtsock_find_rtm_sa(rtm, RTA_NETMASK);
RTSOCK_ATF_REQUIRE_MSG(rtm, sa != NULL, "NETMASK is not set");
ret = sa_equal_msg(sa, mask, msg, sizeof(msg));
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "NETMASK sa diff: %s", msg);
}
if (gw != NULL) {
sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
RTSOCK_ATF_REQUIRE_MSG(rtm, sa != NULL, "GATEWAY is not set");
ret = sa_equal_msg(sa, gw, msg, sizeof(msg));
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "GATEWAY sa diff: %s", msg);
}
RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_pid > 0, "expected non-zero pid");
}
static void
verify_route_message_extra(struct rt_msghdr *rtm, int ifindex, int rtm_flags)
{
RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_index == ifindex,
"expected ifindex %d, got %d", ifindex, rtm->rtm_index);
RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_flags == rtm_flags,
"expected flags: %X, got %X", rtm_flags, rtm->rtm_flags);
}
/* TESTS */
#define DECLARE_TEST_VARS \
char buffer[2048]; \
struct rtsock_test_config *c; \
struct rt_msghdr *rtm = (struct rt_msghdr *)buffer; \
struct sockaddr *sa; \
int ret; \
\
#define DESCRIBE_ROOT_TEST(_msg) config_describe_root_test(tc, _msg)
#define CLEANUP_AFTER_TEST config_generic_cleanup(config_setup(tc))
ATF_TC_WITH_CLEANUP(rtm_get_v4_exact_success);
ATF_TC_HEAD(rtm_get_v4_exact_success, tc)
{
DESCRIBE_ROOT_TEST("Tests RTM_GET with exact prefix lookup on an interface prefix");
}
ATF_TC_BODY(rtm_get_v4_exact_success, tc)
{
DECLARE_TEST_VARS;
c = presetup_ipv4(tc);
prepare_route_message(rtm, RTM_GET, (struct sockaddr *)&c->net4,
(struct sockaddr *)&c->mask4, NULL);
rtsock_send_rtm(c->rtsock_fd, rtm);
rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
/*
* RTM_GET: Report Metrics: len 240, pid: 45072, seq 42, errno 0, flags: <UP,DONE,PINNED>
* sockaddrs: 0x7 <DST,GATEWAY,NETMASK>
* af=inet len=16 addr=192.0.2.0 hd={10, 02, 00{2}, C0, 00, 02, 00{9}}
* af=link len=54 sdl_index=3 if_name=tap4242 hd={36, 12, 03, 00, 06, 00{49}}
* af=inet len=16 addr=255.255.255.0 hd={10, 02, FF{5}, 00{9}}
*/
verify_route_message(rtm, RTM_GET, (struct sockaddr *)&c->net4,
(struct sockaddr *)&c->mask4, NULL);
verify_route_message_extra(rtm, c->ifindex, RTF_UP | RTF_DONE | RTF_PINNED);
/* Explicitly verify gateway for the interface route */
sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
RTSOCK_ATF_REQUIRE_MSG(rtm, sa != NULL, "GATEWAY is not set");
RTSOCK_ATF_REQUIRE_MSG(rtm, sa->sa_family == AF_LINK, "GW sa family is %d", sa->sa_family);
struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
RTSOCK_ATF_REQUIRE_MSG(rtm, sdl->sdl_index == c->ifindex, "GW ifindex is %d", sdl->sdl_index);
}
ATF_TC_CLEANUP(rtm_get_v4_exact_success, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TC_WITH_CLEANUP(rtm_get_v4_lpm_success);
ATF_TC_HEAD(rtm_get_v4_lpm_success, tc)
{
DESCRIBE_ROOT_TEST("Tests RTM_GET with address lookup on an existing prefix");
}
ATF_TC_BODY(rtm_get_v4_lpm_success, tc)
{
DECLARE_TEST_VARS;
c = presetup_ipv4(tc);
prepare_route_message(rtm, RTM_GET, (struct sockaddr *)&c->net4, NULL, NULL);
rtsock_send_rtm(c->rtsock_fd, rtm);
rtm = rtsock_read_rtm(c->rtsock_fd, buffer, sizeof(buffer));
/*
* RTM_GET: Report Metrics: len 312, pid: 67074, seq 1, errno 0, flags:<UP,DONE,PINNED>
* locks: inits:
* sockaddrs: <DST,GATEWAY,NETMASK,IFP,IFA>
* 10.0.0.0 link#1 255.255.255.0 vtnet0:52.54.0.42.f.ef 10.0.0.157
*/
verify_route_message(rtm, RTM_GET, (struct sockaddr *)&c->net4,
(struct sockaddr *)&c->mask4, NULL);
verify_route_message_extra(rtm, c->ifindex, RTF_UP | RTF_DONE | RTF_PINNED);
}
ATF_TC_CLEANUP(rtm_get_v4_lpm_success, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TC_WITH_CLEANUP(rtm_get_v4_empty_dst_failure);
ATF_TC_HEAD(rtm_get_v4_empty_dst_failure, tc)
{
DESCRIBE_ROOT_TEST("Tests RTM_GET with empty DST addr");
}
ATF_TC_BODY(rtm_get_v4_empty_dst_failure, tc)
{
DECLARE_TEST_VARS;
c = config_setup_base(tc);
c->rtsock_fd = rtsock_setup_socket();
rtsock_prepare_route_message(rtm, RTM_GET, NULL,
(struct sockaddr *)&c->mask4, NULL);
rtsock_update_rtm_len(rtm);
write(c->rtsock_fd, rtm, rtm->rtm_msglen);
ATF_CHECK_ERRNO(EINVAL, write(c->rtsock_fd, rtm, rtm->rtm_msglen));
}
ATF_TC_CLEANUP(rtm_get_v4_empty_dst_failure, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TC_WITH_CLEANUP(rtm_get_v4_hostbits_failure);
ATF_TC_HEAD(rtm_get_v4_hostbits_failure, tc)
{
DESCRIBE_ROOT_TEST("Tests RTM_GET with prefix with some hosts-bits set");
}
ATF_TC_BODY(rtm_get_v4_hostbits_failure, tc)
{
DECLARE_TEST_VARS;
c = presetup_ipv4(tc);
/* Q the same prefix */
rtsock_prepare_route_message(rtm, RTM_GET, (struct sockaddr *)&c->addr4,
(struct sockaddr *)&c->mask4, NULL);
rtsock_update_rtm_len(rtm);
ATF_CHECK_ERRNO(ESRCH, write(c->rtsock_fd, rtm, rtm->rtm_msglen));
}
ATF_TC_CLEANUP(rtm_get_v4_hostbits_failure, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TC_WITH_CLEANUP(rtm_add_v4_gw_direct_success);
ATF_TC_HEAD(rtm_add_v4_gw_direct_success, tc)
{
DESCRIBE_ROOT_TEST("Tests IPv4 route addition with directly-reachable GW specified by IP");
}
ATF_TC_BODY(rtm_add_v4_gw_direct_success, tc)
{
DECLARE_TEST_VARS;
c = presetup_ipv4(tc);
/* Create IPv4 subnetwork with smaller prefix */
struct sockaddr_in mask4;
struct sockaddr_in net4;
struct sockaddr_in gw4;
prepare_v4_network(c, &net4, &mask4, &gw4);
prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&net4,
(struct sockaddr *)&mask4, (struct sockaddr *)&gw4);
rtsock_send_rtm(c->rtsock_fd, rtm);
rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
/*
* RTM_ADD: Add Route: len 200, pid: 46068, seq 42, errno 0, flags:<GATEWAY,DONE,STATIC>
* locks: inits:
* sockaddrs: <DST,GATEWAY,NETMASK>
* 192.0.2.0 192.0.2.254 255.255.255.128
*/
verify_route_message(rtm, RTM_ADD, (struct sockaddr *)&net4,
(struct sockaddr *)&mask4, (struct sockaddr *)&gw4);
/* XXX: Currently kernel sets RTF_UP automatically but does NOT report it in the reply */
verify_route_message_extra(rtm, c->ifindex, RTF_DONE | RTF_GATEWAY | RTF_STATIC);
}
ATF_TC_CLEANUP(rtm_add_v4_gw_direct_success, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TC_WITH_CLEANUP(rtm_del_v4_prefix_nogw_success);
ATF_TC_HEAD(rtm_del_v4_prefix_nogw_success, tc)
{
DESCRIBE_ROOT_TEST("Tests IPv4 route removal without specifying gateway");
}
ATF_TC_BODY(rtm_del_v4_prefix_nogw_success, tc)
{
DECLARE_TEST_VARS;
c = presetup_ipv4(tc);
/* Create IPv4 subnetwork with smaller prefix */
struct sockaddr_in mask4;
struct sockaddr_in net4;
struct sockaddr_in gw4;
prepare_v4_network(c, &net4, &mask4, &gw4);
prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&net4,
(struct sockaddr *)&mask4, (struct sockaddr *)&gw4);
rtsock_send_rtm(c->rtsock_fd, rtm);
/* Route has been added successfully, try to delete it */
prepare_route_message(rtm, RTM_DELETE, (struct sockaddr *)&net4,
(struct sockaddr *)&mask4, NULL);
rtsock_send_rtm(c->rtsock_fd, rtm);
rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
/*
* RTM_DELETE: Delete Route: len 200, pid: 46417, seq 43, errno 0, flags: <GATEWAY,DONE,STATIC>
* sockaddrs: 0x7 <DST,GATEWAY,NETMASK>
* af=inet len=16 addr=192.0.2.0 hd={10, 02, 00{2}, C0, 00, 02, 00{9}}
* af=inet len=16 addr=192.0.2.254 hd={10, 02, 00{2}, C0, 00, 02, FE, 00{8}}
* af=inet len=16 addr=255.255.255.128 hd={10, 02, FF{5}, 80, 00{8}}
*/
verify_route_message(rtm, RTM_DELETE, (struct sockaddr *)&net4,
(struct sockaddr *)&mask4, (struct sockaddr *)&gw4);
verify_route_message_extra(rtm, c->ifindex, RTF_DONE | RTF_GATEWAY | RTF_STATIC);
}
ATF_TC_CLEANUP(rtm_del_v4_prefix_nogw_success, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TC_WITH_CLEANUP(rtm_add_v6_gu_gw_gu_direct_success);
ATF_TC_HEAD(rtm_add_v6_gu_gw_gu_direct_success, tc)
{
DESCRIBE_ROOT_TEST("Tests IPv6 global unicast prefix addition with directly-reachable GU GW");
}
ATF_TC_BODY(rtm_add_v6_gu_gw_gu_direct_success, tc)
{
DECLARE_TEST_VARS;
c = presetup_ipv6(tc);
/* Create IPv6 subnetwork with smaller prefix */
struct sockaddr_in6 mask6;
struct sockaddr_in6 net6;
struct sockaddr_in6 gw6;
prepare_v6_network(c, &net6, &mask6, &gw6);
prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&net6,
(struct sockaddr *)&mask6, (struct sockaddr *)&gw6);
rtsock_send_rtm(c->rtsock_fd, rtm);
rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
/*
* RTM_ADD: Add Route: len 200, pid: 46068, seq 42, errno 0, flags:<GATEWAY,DONE,STATIC>
* locks: inits:
* sockaddrs: <DST,GATEWAY,NETMASK>
* 192.0.2.0 192.0.2.254 255.255.255.128
*/
verify_route_message(rtm, RTM_ADD, (struct sockaddr *)&net6,
(struct sockaddr *)&mask6, (struct sockaddr *)&gw6);
/* XXX: Currently kernel sets RTF_UP automatically but does NOT report it in the reply */
verify_route_message_extra(rtm, c->ifindex, RTF_DONE | RTF_GATEWAY | RTF_STATIC);
}
ATF_TC_CLEANUP(rtm_add_v6_gu_gw_gu_direct_success, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TC_WITH_CLEANUP(rtm_del_v6_gu_prefix_nogw_success);
ATF_TC_HEAD(rtm_del_v6_gu_prefix_nogw_success, tc)
{
DESCRIBE_ROOT_TEST("Tests IPv6 global unicast prefix removal without specifying gateway");
}
ATF_TC_BODY(rtm_del_v6_gu_prefix_nogw_success, tc)
{
DECLARE_TEST_VARS;
c = presetup_ipv6(tc);
/* Create IPv6 subnetwork with smaller prefix */
struct sockaddr_in6 mask6;
struct sockaddr_in6 net6;
struct sockaddr_in6 gw6;
prepare_v6_network(c, &net6, &mask6, &gw6);
prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&net6,
(struct sockaddr *)&mask6, (struct sockaddr *)&gw6);
rtsock_send_rtm(c->rtsock_fd, rtm);
/* Route has been added successfully, try to delete it */
prepare_route_message(rtm, RTM_DELETE, (struct sockaddr *)&net6,
(struct sockaddr *)&mask6, NULL);
rtsock_send_rtm(c->rtsock_fd, rtm);
rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
/*
* RTM_DELETE: Delete Route: len 200, pid: 46417, seq 43, errno 0, flags: <GATEWAY,DONE,STATIC>
* sockaddrs: 0x7 <DST,GATEWAY,NETMASK>
* af=inet len=16 addr=192.0.2.0 hd={10, 02, 00{2}, C0, 00, 02, 00{9}}
* af=inet len=16 addr=192.0.2.254 hd={10, 02, 00{2}, C0, 00, 02, FE, 00{8}}
* af=inet len=16 addr=255.255.255.128 hd={10, 02, FF{5}, 80, 00{8}}
*/
verify_route_message(rtm, RTM_DELETE, (struct sockaddr *)&net6,
(struct sockaddr *)&mask6, (struct sockaddr *)&gw6);
verify_route_message_extra(rtm, c->ifindex, RTF_DONE | RTF_GATEWAY | RTF_STATIC);
}
ATF_TC_CLEANUP(rtm_del_v6_gu_prefix_nogw_success, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, rtm_get_v4_exact_success);
ATF_TP_ADD_TC(tp, rtm_get_v4_lpm_success);
ATF_TP_ADD_TC(tp, rtm_get_v4_hostbits_failure);
ATF_TP_ADD_TC(tp, rtm_get_v4_empty_dst_failure);
ATF_TP_ADD_TC(tp, rtm_add_v4_gw_direct_success);
ATF_TP_ADD_TC(tp, rtm_del_v4_prefix_nogw_success);
ATF_TP_ADD_TC(tp, rtm_add_v6_gu_gw_gu_direct_success);
ATF_TP_ADD_TC(tp, rtm_del_v6_gu_prefix_nogw_success);
return (atf_no_error());
}

459
tests/sys/net/routing/test_rtsock_lladdr.c Normal file
View file

@ -0,0 +1,459 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Alexander V. Chernikov
*
* 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 AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#include "rtsock_common.h"
#include "rtsock_config.h"
static inline struct rtsock_test_config *
presetup_ipv6(const atf_tc_t *tc)
{
struct rtsock_test_config *c;
int ret;
c = config_setup(tc);
ret = iface_turn_up(c->ifname);
ATF_REQUIRE_MSG(ret == 0, "Unable to turn up %s", c->ifname);
ret = iface_enable_ipv6(c->ifname);
ATF_REQUIRE_MSG(ret == 0, "Unable to enable IPv6 on %s", c->ifname);
c->rtsock_fd = rtsock_setup_socket();
return (c);
}
static inline struct rtsock_test_config *
presetup_ipv4(const atf_tc_t *tc)
{
struct rtsock_test_config *c;
int ret;
c = config_setup(tc);
/* assumes ifconfig doing IFF_UP */
ret = iface_setup_addr(c->ifname, c->addr4_str, c->plen4);
ATF_REQUIRE_MSG(ret == 0, "ifconfig failed");
/* Actually open interface, so kernel writes won't fail */
if (c->autocreated_interface) {
ret = iface_open(c->ifname);
ATF_REQUIRE_MSG(ret >= 0, "unable to open interface %s", c->ifname);
}
c->rtsock_fd = rtsock_setup_socket();
return (c);
}
static void
prepare_route_message(struct rt_msghdr *rtm, int cmd, struct sockaddr *dst,
struct sockaddr *gw)
{
rtsock_prepare_route_message(rtm, cmd, dst, NULL, gw);
rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA);
}
/* TESTS */
#define DECLARE_TEST_VARS \
char buffer[2048], msg[512]; \
ssize_t len; \
int ret; \
struct rtsock_test_config *c; \
struct rt_msghdr *rtm = (struct rt_msghdr *)buffer; \
struct sockaddr *sa; \
\
#define DECLARE_CLEANUP_VARS \
struct rtsock_test_config *c = config_setup(tc); \
\
#define DESCRIBE_ROOT_TEST(_msg) config_describe_root_test(tc, _msg)
#define CLEANUP_AFTER_TEST config_generic_cleanup(config_setup(tc))
ATF_TC_WITH_CLEANUP(rtm_add_v6_ll_lle_success);
ATF_TC_HEAD(rtm_add_v6_ll_lle_success, tc)
{
DESCRIBE_ROOT_TEST("Tests addition of link-local IPv6 ND entry");
}
ATF_TC_BODY(rtm_add_v6_ll_lle_success, tc)
{
DECLARE_TEST_VARS;
c = presetup_ipv6(tc);
char str_buf[128];
struct sockaddr_in6 sin6;
/* Interface here is optional. XXX: verify kernel side. */
char *v6addr = "fe80::4242:4242";
snprintf(str_buf, sizeof(str_buf), "%s%%%s", v6addr, c->ifname);
sa_convert_str_to_sa(str_buf, (struct sockaddr *)&sin6);
struct sockaddr_dl ether;
snprintf(str_buf, sizeof(str_buf), "%s%%%s", c->remote_lladdr, c->ifname);
sa_convert_str_to_sa(str_buf, (struct sockaddr *)&ether);
prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&sin6, (struct sockaddr *)&ether);
rtsock_send_rtm(c->rtsock_fd, rtm);
/*
* Got message of size 240 on 2019-12-17 15:06:51
* RTM_ADD: Add Route: len 240, pid: 0, seq 0, errno 0, flags: <UP,HOST,DONE,LLINFO>
* sockaddrs: 0x3 <DST,GATEWAY>
* af=inet6 len=28 addr=fe80::4242:4242 scope_id=3 if_name=tap4242
* af=link len=54 sdl_index=3 if_name=tap4242 addr=52:54:00:14:E3:10
*/
rtm = rtsock_read_rtm(c->rtsock_fd, buffer, sizeof(buffer));
sa = rtsock_find_rtm_sa(rtm, RTA_DST);
ret = sa_equal_msg(sa, (struct sockaddr *)&sin6, msg, sizeof(msg));
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "DST sa diff: %s", msg);
sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
int sa_flags = SA_F_IGNORE_IFNAME | SA_F_IGNORE_IFTYPE | SA_F_IGNORE_MEMCMP;
ret = sa_equal_msg_flags(sa, (struct sockaddr *)&ether, msg, sizeof(msg), sa_flags);
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "GATEWAY sa diff: %s", msg);
/* Some additional checks to verify kernel has filled in interface data */
struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
RTSOCK_ATF_REQUIRE_MSG(rtm, sdl->sdl_type > 0, "sdl_type not set");
}
ATF_TC_CLEANUP(rtm_add_v6_ll_lle_success, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TC_WITH_CLEANUP(rtm_add_v6_gu_lle_success);
ATF_TC_HEAD(rtm_add_v6_gu_lle_success, tc)
{
DESCRIBE_ROOT_TEST("Tests addition of global IPv6 ND entry");
}
ATF_TC_BODY(rtm_add_v6_gu_lle_success, tc)
{
DECLARE_TEST_VARS;
c = presetup_ipv6(tc);
char str_buf[128];
struct sockaddr_in6 sin6;
sin6 = c->net6;
#define _s6_addr32 __u6_addr.__u6_addr32
sin6.sin6_addr._s6_addr32[3] = htonl(0x42424242);
#undef _s6_addr32
struct sockaddr_dl ether;
snprintf(str_buf, sizeof(str_buf), "%s%%%s", c->remote_lladdr, c->ifname);
sa_convert_str_to_sa(str_buf, (struct sockaddr *)&ether);
prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&sin6, (struct sockaddr *)&ether);
rtsock_send_rtm(c->rtsock_fd, rtm);
/*
* Got message of size 240 on 2019-12-17 14:56:43
* RTM_ADD: Add Route: len 240, pid: 0, seq 0, errno 0, flags: <UP,HOST,DONE,LLINFO>
* sockaddrs: 0x3 <DST,GATEWAY>
* af=inet6 len=28 addr=2001:db8::4242:4242
* af=link len=54 sdl_index=3 if_name=tap4242 addr=52:54:00:14:E3:10
*/
/* XXX: where is uRPF?! this should fail */
rtm = rtsock_read_rtm(c->rtsock_fd, buffer, sizeof(buffer));
sa = rtsock_find_rtm_sa(rtm, RTA_DST);
ret = sa_equal_msg(sa, (struct sockaddr *)&sin6, msg, sizeof(msg));
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "DST sa diff: %s", msg);
sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
int sa_flags = SA_F_IGNORE_IFNAME | SA_F_IGNORE_IFTYPE | SA_F_IGNORE_MEMCMP;
ret = sa_equal_msg_flags(sa, (struct sockaddr *)&ether, msg, sizeof(msg), sa_flags);
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "GATEWAY sa diff: %s", msg);
/* Some additional checks to verify kernel has filled in interface data */
struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
RTSOCK_ATF_REQUIRE_MSG(rtm, sdl->sdl_type > 0, "sdl_type not set");
}
ATF_TC_CLEANUP(rtm_add_v6_gu_lle_success, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TC_WITH_CLEANUP(rtm_add_v4_gu_lle_success);
ATF_TC_HEAD(rtm_add_v4_gu_lle_success, tc)
{
DESCRIBE_ROOT_TEST("Tests addition of IPv4 ARP entry");
}
ATF_TC_BODY(rtm_add_v4_gu_lle_success, tc)
{
DECLARE_TEST_VARS;
c = presetup_ipv4(tc);
char str_buf[128];
struct sockaddr_in sin;
sin = c->addr4;
/* Use the next IPv4 address after self */
sin.sin_addr.s_addr = htonl(ntohl(sin.sin_addr.s_addr) + 1);
struct sockaddr_dl ether;
snprintf(str_buf, sizeof(str_buf), "%s%%%s", c->remote_lladdr, c->ifname);
sa_convert_str_to_sa(str_buf, (struct sockaddr *)&ether);
prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&sin, (struct sockaddr *)&ether);
len = rtsock_send_rtm(c->rtsock_fd, rtm);
/*
* RTM_ADD: Add Route: len 224, pid: 43131, seq 42, errno 0, flags: <HOST,DONE,LLINFO,STATIC>
* sockaddrs: 0x3 <DST,GATEWAY>
* af=inet len=16 addr=192.0.2.2
* af=link len=54 sdl_index=3 if_name=tap4242 addr=52:54:00:14:E3:10
*/
rtm = rtsock_read_rtm(c->rtsock_fd, buffer, sizeof(buffer));
sa = rtsock_find_rtm_sa(rtm, RTA_DST);
ret = sa_equal_msg(sa, (struct sockaddr *)&sin, msg, sizeof(msg));
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "DST sa diff: %s", msg);
sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
int sa_flags = SA_F_IGNORE_IFNAME | SA_F_IGNORE_IFTYPE | SA_F_IGNORE_MEMCMP;
ret = sa_equal_msg_flags(sa, (struct sockaddr *)&ether, msg, sizeof(msg), sa_flags);
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "GATEWAY sa diff: %s", msg);
/*
* TODO: Currently kernel code does not set sdl_type, contrary to IPv6.
*/
}
ATF_TC_CLEANUP(rtm_add_v4_gu_lle_success, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TC_WITH_CLEANUP(rtm_del_v6_ll_lle_success);
ATF_TC_HEAD(rtm_del_v6_ll_lle_success, tc)
{
DESCRIBE_ROOT_TEST("Tests removal of link-local IPv6 ND entry");
}
ATF_TC_BODY(rtm_del_v6_ll_lle_success, tc)
{
DECLARE_TEST_VARS;
c = presetup_ipv6(tc);
char str_buf[128];
struct sockaddr_in6 sin6;
/* Interface here is optional. XXX: verify kernel side. */
char *v6addr = "fe80::4242:4242";
snprintf(str_buf, sizeof(str_buf), "%s%%%s", v6addr, c->ifname);
sa_convert_str_to_sa(str_buf, (struct sockaddr *)&sin6);
struct sockaddr_dl ether;
snprintf(str_buf, sizeof(str_buf), "%s%%%s", c->remote_lladdr, c->ifname);
sa_convert_str_to_sa(str_buf, (struct sockaddr *)&ether);
prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&sin6, (struct sockaddr *)&ether);
rtsock_send_rtm(c->rtsock_fd, rtm);
/* Successfully added an entry, let's try to remove it. */
prepare_route_message(rtm, RTM_DELETE, (struct sockaddr *)&sin6, (struct sockaddr *)&ether);
rtsock_send_rtm(c->rtsock_fd, rtm);
rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_type == RTM_DELETE, "rtm_type is not delete");
sa = rtsock_find_rtm_sa(rtm, RTA_DST);
ret = sa_equal_msg(sa, (struct sockaddr *)&sin6, msg, sizeof(msg));
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "DST sa diff: %s", msg);
sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
int sa_flags = SA_F_IGNORE_IFNAME | SA_F_IGNORE_IFTYPE | SA_F_IGNORE_MEMCMP;
ret = sa_equal_msg_flags(sa, (struct sockaddr *)&ether, msg, sizeof(msg), sa_flags);
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "GATEWAY sa diff: %s", msg);
/*
* TODO: Currently kernel code does not set sdl_type on delete.
*/
}
ATF_TC_CLEANUP(rtm_del_v6_ll_lle_success, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TC_WITH_CLEANUP(rtm_del_v6_gu_lle_success);
ATF_TC_HEAD(rtm_del_v6_gu_lle_success, tc)
{
DESCRIBE_ROOT_TEST("Tests removal of global IPv6 ND entry");
}
ATF_TC_BODY(rtm_del_v6_gu_lle_success, tc)
{
DECLARE_TEST_VARS;
c = presetup_ipv6(tc);
char str_buf[128];
struct sockaddr_in6 sin6;
sin6 = c->net6;
#define _s6_addr32 __u6_addr.__u6_addr32
sin6.sin6_addr._s6_addr32[3] = htonl(0x42424242);
#undef _s6_addr32
struct sockaddr_dl ether;
snprintf(str_buf, sizeof(str_buf), "%s%%%s", c->remote_lladdr, c->ifname);
sa_convert_str_to_sa(str_buf, (struct sockaddr *)&ether);
prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&sin6, (struct sockaddr *)&ether);
len = rtsock_send_rtm(c->rtsock_fd, rtm);
/* Successfully added an entry, let's try to remove it. */
prepare_route_message(rtm, RTM_DELETE, (struct sockaddr *)&sin6, (struct sockaddr *)&ether);
rtsock_send_rtm(c->rtsock_fd, rtm);
rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_type == RTM_DELETE, "rtm_type is not delete");
sa = rtsock_find_rtm_sa(rtm, RTA_DST);
ret = sa_equal_msg(sa, (struct sockaddr *)&sin6, msg, sizeof(msg));
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "DST sa diff: %s", msg);
sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
int sa_flags = SA_F_IGNORE_IFNAME | SA_F_IGNORE_IFTYPE | SA_F_IGNORE_MEMCMP;
ret = sa_equal_msg_flags(sa, (struct sockaddr *)&ether, msg, sizeof(msg), sa_flags);
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "GATEWAY sa diff: %s", msg);
/*
* TODO: Currently kernel code does not set sdl_type on delete.
*/
}
ATF_TC_CLEANUP(rtm_del_v6_gu_lle_success, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TC_WITH_CLEANUP(rtm_del_v4_gu_lle_success);
ATF_TC_HEAD(rtm_del_v4_gu_lle_success, tc)
{
DESCRIBE_ROOT_TEST("Tests removal of IPv4 ARP entry");
}
ATF_TC_BODY(rtm_del_v4_gu_lle_success, tc)
{
DECLARE_TEST_VARS;
c = presetup_ipv4(tc);
char str_buf[128];
struct sockaddr_in sin;
sin = c->addr4;
/* Use the next IPv4 address after self */
sin.sin_addr.s_addr = htonl(ntohl(sin.sin_addr.s_addr) + 1);
struct sockaddr_dl ether;
snprintf(str_buf, sizeof(str_buf), "%s%%%s", c->remote_lladdr, c->ifname);
sa_convert_str_to_sa(str_buf, (struct sockaddr *)&ether);
prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&sin, (struct sockaddr *)&ether);
rtsock_send_rtm(c->rtsock_fd, rtm);
rtsock_read_rtm(c->rtsock_fd, buffer, sizeof(buffer));
/* We successfully added an entry, let's try to remove it. */
prepare_route_message(rtm, RTM_DELETE, (struct sockaddr *)&sin, (struct sockaddr *)&ether);
rtsock_send_rtm(c->rtsock_fd, rtm);
rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_type == RTM_DELETE, "rtm_type is not delete");
sa = rtsock_find_rtm_sa(rtm, RTA_DST);
ret = sa_equal_msg(sa, (struct sockaddr *)&sin, msg, sizeof(msg));
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "DST sa diff: %s", msg);
sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
int sa_flags = SA_F_IGNORE_IFNAME | SA_F_IGNORE_IFTYPE | SA_F_IGNORE_MEMCMP;
ret = sa_equal_msg_flags(sa, (struct sockaddr *)&ether, msg, sizeof(msg), sa_flags);
RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "GATEWAY sa diff: %s", msg);
/*
* TODO: Currently kernel code does not set sdl_type, contrary to IPv6.
*/
}
ATF_TC_CLEANUP(rtm_del_v4_gu_lle_success, tc)
{
CLEANUP_AFTER_TEST;
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, rtm_add_v6_ll_lle_success);
ATF_TP_ADD_TC(tp, rtm_add_v6_gu_lle_success);
ATF_TP_ADD_TC(tp, rtm_add_v4_gu_lle_success);
ATF_TP_ADD_TC(tp, rtm_del_v6_ll_lle_success);
ATF_TP_ADD_TC(tp, rtm_del_v6_gu_lle_success);
ATF_TP_ADD_TC(tp, rtm_del_v4_gu_lle_success);
return (atf_no_error());
}