CoCalc -- test_rtsock

GitHub Repository: freebsd/freebsd-src
Path: blob/main/tests/sys/net/routing/test_rtsock_lladdr.c
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/*-
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 * SPDX-License-Identifier: BSD-2-Clause
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 *
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 * Copyright (c) 2019 Alexander V. Chernikov
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include "rtsock_common.h"
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#include "rtsock_config.h"
30

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static void
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jump_vnet(struct rtsock_test_config *c, const atf_tc_t *tc)
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{
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	char vnet_name[512];
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	snprintf(vnet_name, sizeof(vnet_name), "vt-%s", atf_tc_get_ident(tc));
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	RLOG("jumping to %s", vnet_name);
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	vnet_switch_one(vnet_name, c->ifname);
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	/* Update ifindex cache */
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	c->ifindex = if_nametoindex(c->ifname);
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}
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static inline struct rtsock_test_config *
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presetup_ipv6(const atf_tc_t *tc)
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{
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	struct rtsock_test_config *c;
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	int ret;
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	c = config_setup(tc, NULL);
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	jump_vnet(c, tc);
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	ret = iface_turn_up(c->ifname);
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	ATF_REQUIRE_MSG(ret == 0, "Unable to turn up %s", c->ifname);
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	ret = iface_enable_ipv6(c->ifname);
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	ATF_REQUIRE_MSG(ret == 0, "Unable to enable IPv6 on %s", c->ifname);
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	c->rtsock_fd = rtsock_setup_socket();
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	return (c);
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}
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static inline struct rtsock_test_config *
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presetup_ipv4(const atf_tc_t *tc)
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{
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	struct rtsock_test_config *c;
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	int ret;
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	c = config_setup(tc, NULL);
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	jump_vnet(c, tc);
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	/* assumes ifconfig doing IFF_UP */
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	ret = iface_setup_addr(c->ifname, c->addr4_str, c->plen4);
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	ATF_REQUIRE_MSG(ret == 0, "ifconfig failed");
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	c->rtsock_fd = rtsock_setup_socket();
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	return (c);
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}
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static void
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prepare_route_message(struct rt_msghdr *rtm, int cmd, struct sockaddr *dst,
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  struct sockaddr *gw)
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{
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	rtsock_prepare_route_message(rtm, cmd, dst, NULL, gw);
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	rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA);
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}
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/* TESTS */
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#define	DECLARE_TEST_VARS					\
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	char buffer[2048], msg[512];				\
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	ssize_t len;						\
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	int ret;						\
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	struct rtsock_test_config *c;				\
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	struct rt_msghdr *rtm = (struct rt_msghdr *)buffer;	\
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	struct sockaddr *sa;					\
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								\
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#define	DECLARE_CLEANUP_VARS					\
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	struct rtsock_test_config *c = config_setup(tc);	\
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								\
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#define	DESCRIBE_ROOT_TEST(_msg)	config_describe_root_test(tc, _msg)
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#define	CLEANUP_AFTER_TEST	config_generic_cleanup(tc)
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#define	RTM_DECLARE_ROOT_TEST(_name, _descr)			\
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ATF_TC_WITH_CLEANUP(_name);					\
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ATF_TC_HEAD(_name, tc)						\
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{								\
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	DESCRIBE_ROOT_TEST(_descr);				\
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}								\
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ATF_TC_CLEANUP(_name, tc)					\
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{								\
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	CLEANUP_AFTER_TEST;					\
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}
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RTM_DECLARE_ROOT_TEST(rtm_add_v6_ll_lle_success, "Tests addition of link-local IPv6 ND entry");
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ATF_TC_BODY(rtm_add_v6_ll_lle_success, tc)
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{
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	DECLARE_TEST_VARS;
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	c = presetup_ipv6(tc);
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	char str_buf[128];
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	struct sockaddr_in6 sin6;
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	/* Interface here is optional. XXX: verify kernel side. */
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	char *v6addr = "fe80::4242:4242";
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	snprintf(str_buf, sizeof(str_buf), "%s%%%s", v6addr, c->ifname);
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	sa_convert_str_to_sa(str_buf, (struct sockaddr *)&sin6);
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	struct sockaddr_dl ether;
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	snprintf(str_buf, sizeof(str_buf), "%s%%%s", c->remote_lladdr, c->ifname);
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	sa_convert_str_to_sa(str_buf, (struct sockaddr *)&ether);
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	prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&sin6, (struct sockaddr *)&ether);
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	rtsock_send_rtm(c->rtsock_fd, rtm);
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	/*
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	 * Got message of size 240 on 2019-12-17 15:06:51
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	 * RTM_ADD: Add Route: len 240, pid: 0, seq 0, errno 0, flags: <UP,HOST,DONE,LLINFO>
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	 * sockaddrs: 0x3 <DST,GATEWAY>
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	 *  af=inet6 len=28 addr=fe80::4242:4242 scope_id=3 if_name=tap4242
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	 *  af=link len=54 sdl_index=3 if_name=tap4242 addr=52:54:00:14:E3:10
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	 */
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	rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
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	sa = rtsock_find_rtm_sa(rtm, RTA_DST);
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	ret = sa_equal_msg(sa, (struct sockaddr *)&sin6, msg, sizeof(msg));
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	RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "DST sa diff: %s", msg);
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	sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
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	int sa_flags = SA_F_IGNORE_IFNAME | SA_F_IGNORE_IFTYPE | SA_F_IGNORE_MEMCMP;
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	ret = sa_equal_msg_flags(sa, (struct sockaddr *)&ether, msg, sizeof(msg), sa_flags);
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	RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "GATEWAY sa diff: %s", msg);
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#if 0
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	/* Disable the check until https://reviews.freebsd.org/D22003 merge */
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	/* Some additional checks to verify kernel has filled in interface data */
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	struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
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	RTSOCK_ATF_REQUIRE_MSG(rtm, sdl->sdl_type > 0, "sdl_type not set");
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#endif
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}
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RTM_DECLARE_ROOT_TEST(rtm_add_v6_gu_lle_success, "Tests addition of global IPv6 ND entry");
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ATF_TC_BODY(rtm_add_v6_gu_lle_success, tc)
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{
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	DECLARE_TEST_VARS;
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	c = presetup_ipv6(tc);
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	char str_buf[128];
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	struct sockaddr_in6 sin6;
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	sin6 = c->net6;
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#define _s6_addr32 __u6_addr.__u6_addr32
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	sin6.sin6_addr._s6_addr32[3] = htonl(0x42424242);
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#undef _s6_addr32
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	struct sockaddr_dl ether;
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	snprintf(str_buf, sizeof(str_buf), "%s%%%s", c->remote_lladdr, c->ifname);
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	sa_convert_str_to_sa(str_buf, (struct sockaddr *)&ether);
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	prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&sin6, (struct sockaddr *)&ether);
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	rtsock_send_rtm(c->rtsock_fd, rtm);
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	/*
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	 * Got message of size 240 on 2019-12-17 14:56:43
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	 * RTM_ADD: Add Route: len 240, pid: 0, seq 0, errno 0, flags: <UP,HOST,DONE,LLINFO>
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	 * sockaddrs: 0x3 <DST,GATEWAY>
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	 *  af=inet6 len=28 addr=2001:db8::4242:4242
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 	 *  af=link len=54 sdl_index=3 if_name=tap4242 addr=52:54:00:14:E3:10
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	 */
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	/* XXX: where is uRPF?! this should fail */
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	rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
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	sa = rtsock_find_rtm_sa(rtm, RTA_DST);
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	ret = sa_equal_msg(sa, (struct sockaddr *)&sin6, msg, sizeof(msg));
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	RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "DST sa diff: %s", msg);
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	sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
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	int sa_flags = SA_F_IGNORE_IFNAME | SA_F_IGNORE_IFTYPE | SA_F_IGNORE_MEMCMP;
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	ret = sa_equal_msg_flags(sa, (struct sockaddr *)&ether, msg, sizeof(msg), sa_flags);
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	RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "GATEWAY sa diff: %s", msg);
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#if 0
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	/* Disable the check until https://reviews.freebsd.org/D22003 merge */
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	/* Some additional checks to verify kernel has filled in interface data */
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	struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
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	RTSOCK_ATF_REQUIRE_MSG(rtm, sdl->sdl_type > 0, "sdl_type not set");
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#endif
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}
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RTM_DECLARE_ROOT_TEST(rtm_add_v4_gu_lle_success, "Tests addition of IPv4 ARP entry");
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ATF_TC_BODY(rtm_add_v4_gu_lle_success, tc)
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{
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	DECLARE_TEST_VARS;
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	c = presetup_ipv4(tc);
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	char str_buf[128];
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	struct sockaddr_in sin;
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	sin = c->addr4;
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	/* Use the next IPv4 address after self */
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	sin.sin_addr.s_addr = htonl(ntohl(sin.sin_addr.s_addr) + 1);
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	struct sockaddr_dl ether;
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	snprintf(str_buf, sizeof(str_buf), "%s%%%s", c->remote_lladdr, c->ifname);
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	sa_convert_str_to_sa(str_buf, (struct sockaddr *)&ether);
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	prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&sin, (struct sockaddr *)&ether);
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	len = rtsock_send_rtm(c->rtsock_fd, rtm);
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	/*
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	 * RTM_ADD: Add Route: len 224, pid: 43131, seq 42, errno 0, flags: <HOST,DONE,LLINFO,STATIC>
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	 * sockaddrs: 0x3 <DST,GATEWAY>
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	 *  af=inet len=16 addr=192.0.2.2
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	 *  af=link len=54 sdl_index=3 if_name=tap4242 addr=52:54:00:14:E3:10
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	 */
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	rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
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	sa = rtsock_find_rtm_sa(rtm, RTA_DST);
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	ret = sa_equal_msg(sa, (struct sockaddr *)&sin, msg, sizeof(msg));
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	RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "DST sa diff: %s", msg);
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257
	sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
258
	int sa_flags = SA_F_IGNORE_IFNAME | SA_F_IGNORE_IFTYPE | SA_F_IGNORE_MEMCMP;
259
	ret = sa_equal_msg_flags(sa, (struct sockaddr *)&ether, msg, sizeof(msg), sa_flags);
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	RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "GATEWAY sa diff: %s", msg);
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262
	/*
263
	 * TODO: Currently kernel code does not set sdl_type, contrary to IPv6.
264
	 */
265
}
266

267
RTM_DECLARE_ROOT_TEST(rtm_del_v6_ll_lle_success, "Tests removal of link-local IPv6 ND entry");
268
ATF_TC_BODY(rtm_del_v6_ll_lle_success, tc)
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{
270
	DECLARE_TEST_VARS;
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	c = presetup_ipv6(tc);
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274
	char str_buf[128];
275

276
	struct sockaddr_in6 sin6;
277
	/* Interface here is optional. XXX: verify kernel side. */
278
	char *v6addr = "fe80::4242:4242";
279
	snprintf(str_buf, sizeof(str_buf), "%s%%%s", v6addr, c->ifname);
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	sa_convert_str_to_sa(str_buf, (struct sockaddr *)&sin6);
281

282
	struct sockaddr_dl ether;
283
	snprintf(str_buf, sizeof(str_buf), "%s%%%s", c->remote_lladdr, c->ifname);
284
	sa_convert_str_to_sa(str_buf, (struct sockaddr *)&ether);
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286
	prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&sin6, (struct sockaddr *)&ether);
287

288
	rtsock_send_rtm(c->rtsock_fd, rtm);
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290
	/* Successfully added an entry, let's try to remove it. */
291
	prepare_route_message(rtm, RTM_DELETE, (struct sockaddr *)&sin6, (struct sockaddr *)&ether);
292

293
	rtsock_send_rtm(c->rtsock_fd, rtm);
294

295
	rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
296

297
	RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_type == RTM_DELETE, "rtm_type is not delete");
298

299
	sa = rtsock_find_rtm_sa(rtm, RTA_DST);
300
	ret = sa_equal_msg(sa, (struct sockaddr *)&sin6, msg, sizeof(msg));
301
	RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "DST sa diff: %s", msg);
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303
	sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
304
	int sa_flags = SA_F_IGNORE_IFNAME | SA_F_IGNORE_IFTYPE | SA_F_IGNORE_MEMCMP;
305
	ret = sa_equal_msg_flags(sa, (struct sockaddr *)&ether, msg, sizeof(msg), sa_flags);
306
	RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "GATEWAY sa diff: %s", msg);
307

308
	/*
309
	 * TODO: Currently kernel code does not set sdl_type on delete.
310
	 */
311
}
312

313
RTM_DECLARE_ROOT_TEST(rtm_del_v6_gu_lle_success, "Tests removal of global IPv6 ND entry");
314
ATF_TC_BODY(rtm_del_v6_gu_lle_success, tc)
315
{
316
	DECLARE_TEST_VARS;
317

318
	c = presetup_ipv6(tc);
319

320
	char str_buf[128];
321

322
	struct sockaddr_in6 sin6;
323
	sin6 = c->net6;
324
#define _s6_addr32 __u6_addr.__u6_addr32
325
	sin6.sin6_addr._s6_addr32[3] = htonl(0x42424242);
326
#undef _s6_addr32
327

328
	struct sockaddr_dl ether;
329
	snprintf(str_buf, sizeof(str_buf), "%s%%%s", c->remote_lladdr, c->ifname);
330
	sa_convert_str_to_sa(str_buf, (struct sockaddr *)&ether);
331

332
	prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&sin6, (struct sockaddr *)&ether);
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334
	len = rtsock_send_rtm(c->rtsock_fd, rtm);
335

336
	/* Successfully added an entry, let's try to remove it. */
337
	prepare_route_message(rtm, RTM_DELETE, (struct sockaddr *)&sin6, (struct sockaddr *)&ether);
338

339
	rtsock_send_rtm(c->rtsock_fd, rtm);
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341
	rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
342

343
	RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_type == RTM_DELETE, "rtm_type is not delete");
344

345
	sa = rtsock_find_rtm_sa(rtm, RTA_DST);
346
	ret = sa_equal_msg(sa, (struct sockaddr *)&sin6, msg, sizeof(msg));
347
	RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "DST sa diff: %s", msg);
348

349
	sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
350
	int sa_flags = SA_F_IGNORE_IFNAME | SA_F_IGNORE_IFTYPE | SA_F_IGNORE_MEMCMP;
351
	ret = sa_equal_msg_flags(sa, (struct sockaddr *)&ether, msg, sizeof(msg), sa_flags);
352
	RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "GATEWAY sa diff: %s", msg);
353

354
	/*
355
	 * TODO: Currently kernel code does not set sdl_type on delete.
356
	 */
357
}
358

359
RTM_DECLARE_ROOT_TEST(rtm_del_v4_gu_lle_success, "Tests removal of IPv4 ARP entry");
360
ATF_TC_BODY(rtm_del_v4_gu_lle_success, tc)
361
{
362
	DECLARE_TEST_VARS;
363

364
	c = presetup_ipv4(tc);
365

366
	char str_buf[128];
367

368
	struct sockaddr_in sin;
369
	sin = c->addr4;
370
	/* Use the next IPv4 address after self */
371
	sin.sin_addr.s_addr = htonl(ntohl(sin.sin_addr.s_addr) + 1);
372

373
	struct sockaddr_dl ether;
374
	snprintf(str_buf, sizeof(str_buf), "%s%%%s", c->remote_lladdr, c->ifname);
375
	sa_convert_str_to_sa(str_buf, (struct sockaddr *)&ether);
376

377
	prepare_route_message(rtm, RTM_ADD, (struct sockaddr *)&sin, (struct sockaddr *)&ether);
378

379
	rtsock_send_rtm(c->rtsock_fd, rtm);
380

381
	/* We successfully added an entry, let's try to remove it. */
382
	prepare_route_message(rtm, RTM_DELETE, (struct sockaddr *)&sin, (struct sockaddr *)&ether);
383

384
	rtsock_send_rtm(c->rtsock_fd, rtm);
385

386
	rtm = rtsock_read_rtm_reply(c->rtsock_fd, buffer, sizeof(buffer), rtm->rtm_seq);
387

388
	RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_type == RTM_DELETE, "rtm_type is not delete");
389

390
	sa = rtsock_find_rtm_sa(rtm, RTA_DST);
391
	ret = sa_equal_msg(sa, (struct sockaddr *)&sin, msg, sizeof(msg));
392
	RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "DST sa diff: %s", msg);
393

394
	sa = rtsock_find_rtm_sa(rtm, RTA_GATEWAY);
395
	int sa_flags = SA_F_IGNORE_IFNAME | SA_F_IGNORE_IFTYPE | SA_F_IGNORE_MEMCMP;
396
	ret = sa_equal_msg_flags(sa, (struct sockaddr *)&ether, msg, sizeof(msg), sa_flags);
397
	RTSOCK_ATF_REQUIRE_MSG(rtm, ret != 0, "GATEWAY sa diff: %s", msg);
398

399
	/*
400
	 * TODO: Currently kernel code does not set sdl_type, contrary to IPv6.
401
	 */
402
}
403

404
ATF_TP_ADD_TCS(tp)
405
{
406
	ATF_TP_ADD_TC(tp, rtm_add_v6_ll_lle_success);
407
	ATF_TP_ADD_TC(tp, rtm_add_v6_gu_lle_success);
408
	ATF_TP_ADD_TC(tp, rtm_add_v4_gu_lle_success);
409
	ATF_TP_ADD_TC(tp, rtm_del_v6_ll_lle_success);
410
	ATF_TP_ADD_TC(tp, rtm_del_v6_gu_lle_success);
411
	ATF_TP_ADD_TC(tp, rtm_del_v4_gu_lle_success);
412

413
	return (atf_no_error());
414
}
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