[LTP] [RFC PATCH v3 2/2] net/route: Add netlink based route change gw/dest tests

Petr Vorel pvorel@suse.cz
Fri Apr 3 18:54:32 CEST 2020


* use libmnl and new C API
* reuse code in tst_net.h (added in previous commit)
* add shell wrapper route-change-netlink.sh (set environment with
  tst_net.sh instead of using deprecated helpers in testcases/network/stress/ns-tools/)
* add tst_ipaddr_un() into C API, unlike shell API this implementation
  does not support -c tst_ipaddr_un [-cCOUNTER] [TYPE] syntax.

Travis:
* add libmnl libraries to most of travis jobs

Cleanup:
* cleanup test description
* other cleanup

Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
Changes v1->v2:
* Drop tst_ipaddr_un() in C. I did more complete implementation than in
v1, but then decided to pass parameters in from shell.
* Find free rhost port in shell and pass it to C.

 configure.ac                                  |   1 +
 include/mk/config.mk.in                       |   2 +
 m4/ltp-libmnl.m4                              |   8 +
 runtest/net_stress.route                      |   4 +
 testcases/network/stress/route/.gitignore     |   1 +
 .../network/stress/route/00_Descriptions.txt  |  39 +-
 testcases/network/stress/route/Makefile       |  30 +-
 .../network/stress/route/route-change-dst.sh  |   1 +
 .../network/stress/route/route-change-gw.sh   |  10 +-
 .../network/stress/route/route-change-if.sh   |   1 +
 .../stress/route/route-change-netlink-dst.sh  |  33 ++
 .../stress/route/route-change-netlink-gw.sh   |  30 ++
 .../stress/route/route-change-netlink.c       | 348 ++++++++++++++++++
 testcases/network/stress/route/route-lib.sh   |  34 +-
 travis/debian.cross-compile.sh                |   1 +
 travis/debian.sh                              |   1 +
 travis/fedora.sh                              |   3 +
 travis/tumbleweed.sh                          |   1 +
 18 files changed, 492 insertions(+), 56 deletions(-)
 create mode 100644 m4/ltp-libmnl.m4
 create mode 100644 testcases/network/stress/route/.gitignore
 create mode 100755 testcases/network/stress/route/route-change-netlink-dst.sh
 create mode 100755 testcases/network/stress/route/route-change-netlink-gw.sh
 create mode 100644 testcases/network/stress/route/route-change-netlink.c

diff --git a/configure.ac b/configure.ac
index e1069b57e..9ccf8c3ea 100644
--- a/configure.ac
+++ b/configure.ac
@@ -300,6 +300,7 @@ LTP_CHECK_CRYPTO
 LTP_CHECK_FORTIFY_SOURCE
 LTP_CHECK_KERNEL_DEVEL
 LTP_CHECK_KEYUTILS_SUPPORT
+LTP_CHECK_LIBMNL
 LTP_CHECK_LINUX_PTRACE
 LTP_CHECK_LINUXRANDOM
 LTP_CHECK_MREMAP_FIXED
diff --git a/include/mk/config.mk.in b/include/mk/config.mk.in
index 5526cfea1..87b2c833d 100644
--- a/include/mk/config.mk.in
+++ b/include/mk/config.mk.in
@@ -43,6 +43,8 @@ TIRPC_CFLAGS		:= @TIRPC_CFLAGS@
 TIRPC_LIBS		:= @TIRPC_LIBS@
 KEYUTILS_LIBS		:= @KEYUTILS_LIBS@
 HAVE_FTS_H		:= @HAVE_FTS_H@
+LIBMNL_LIBS		:= @LIBMNL_LIBS@
+LIBMNL_CFLAGS		:= @LIBMNL_CFLAGS@
 
 prefix			:= @prefix@
 
diff --git a/m4/ltp-libmnl.m4 b/m4/ltp-libmnl.m4
new file mode 100644
index 000000000..be8ab4584
--- /dev/null
+++ b/m4/ltp-libmnl.m4
@@ -0,0 +1,8 @@
+dnl SPDX-License-Identifier: GPL-2.0-or-later
+dnl Copyright (c) 2019 Petr Vorel <pvorel@suse.cz>
+
+AC_DEFUN([LTP_CHECK_LIBMNL], [
+    PKG_CHECK_MODULES([LIBMNL], [libmnl], [
+        AC_DEFINE([HAVE_LIBMNL], [1], [Define to 1 if you have libmnl library and headers])
+	], [have_libmnl=no])
+])
diff --git a/runtest/net_stress.route b/runtest/net_stress.route
index 4eff6766a..cfe31df02 100644
--- a/runtest/net_stress.route
+++ b/runtest/net_stress.route
@@ -2,11 +2,15 @@
 route4-change-dst route-change-dst.sh
 route4-change-gw route-change-gw.sh
 route4-change-if route-change-if.sh
+route4-change-netlink-dst route-change-netlink.sh
+route4-change-netlink-gw route-change-netlink.sh -g
 route4-redirect route4-redirect
 route4-rmmod route4-rmmod
 
 route6-change-dst route-change-dst.sh -6
 route6-change-gw route-change-gw.sh -6
 route6-change-if route-change-if.sh -6
+route6-change-netlink-dst route-change-netlink.sh
+route6-change-netlink-gw route-change-netlink.sh -g
 route6-redirect route6-redirect
 route6-rmmod route6-rmmod
diff --git a/testcases/network/stress/route/.gitignore b/testcases/network/stress/route/.gitignore
new file mode 100644
index 000000000..4ed647a55
--- /dev/null
+++ b/testcases/network/stress/route/.gitignore
@@ -0,0 +1 @@
+/route-change-netlink
diff --git a/testcases/network/stress/route/00_Descriptions.txt b/testcases/network/stress/route/00_Descriptions.txt
index e0e2e42c6..bd9661880 100644
--- a/testcases/network/stress/route/00_Descriptions.txt
+++ b/testcases/network/stress/route/00_Descriptions.txt
@@ -1,36 +1,23 @@
 route{4,6}-change-dst
-	Verify the IPv4/IPv6 is not broken when ip command changes route
-	destination many times
+	Change IPv4/IPv6 route destination by ip command
 
 route{4,6}-change-gw
-	Verify the IPv4/IPv6 is not broken when ip command changes route
-	gateway many times
+	Change IPv4/IPv6 route gateway by ip command
 
 route{4,6}-change-if
-	Verify the IPv4/IPv6 is not broken when ip command changes route
-	interface many times
+	Change IPv4/IPv6 route interface by ip command
 
-route4-redirect01
-	Verify the kernel is not crashed when the IPv4 route is modified by
-	ICMP Redirects frequently
+route{4,6}-change-netlink-dst
+	Change IPv4/IPv6 route destination by libmnl API
 
-route4-rmmod01
-	Verify the kernel is not crashed when IPv4 route is add by route command
-	then it is deleted by the removing network driver
+route{4,6}-change-netlink-gw
+	Change IPv4/IPv6 route gateway by libmnl API
 
-route4-rmmod02
-	Verify the kernel is not crashed when IPv4 route is add by ip command
-	then it is deleted by the removing network driver
+route{4,6}-redirect01
+	Change IPv4/IPv6 route by ICMP Redirects frequently
 
+route{4,6}-rmmod01
+	Add IPv4/IPv6 route by route command then delete it by the removing network driver
 
-route6-redirect01
-	Verify the kernel is not crashed when the IPv6 route is modified by
-	ICMP Redirects frequently
-
-route6-rmmod01
-	Verify the kernel is not crashed when IPv6 route is add by route command
-	then it is deleted by the removing network driver
-
-route6-rmmod02
-	Verify the kernel is not crashed when IPv6 route is add by ip command
-	then it is deleted by the removing network driver
+route{4,6}-rmmod02
+	Add IPv4/IPv6 route by ip command then delete it by the removing network driver
diff --git a/testcases/network/stress/route/Makefile b/testcases/network/stress/route/Makefile
index 2e5eaa2f2..b4e6409be 100644
--- a/testcases/network/stress/route/Makefile
+++ b/testcases/network/stress/route/Makefile
@@ -1,29 +1,15 @@
-#
-#    network/stress/route test suite Makefile.
-#
-#    Copyright (C) 2009, Cisco Systems Inc.
-#
-#    This program is free software; you can redistribute it and/or modify
-#    it under the terms of the GNU General Public License as published by
-#    the Free Software Foundation; either version 2 of the License, or
-#    (at your option) any later version.
-#
-#    This program is distributed in the hope that it will be useful,
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#    GNU General Public License for more details.
-#
-#    You should have received a copy of the GNU General Public License along
-#    with this program; if not, write to the Free Software Foundation, Inc.,
-#    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-#
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2009, Cisco Systems Inc.
+# Copyright (c) Linux Test Project, 2006-2020
 # Ngie Cooper, October 2009
-#
 
 top_srcdir		?= ../../../..
 
-include $(top_srcdir)/include/mk/env_pre.mk
+include $(top_srcdir)/include/mk/testcases.mk
 
-INSTALL_TARGETS		:= route*
+INSTALL_TARGETS		+= route[4-6]-* *.sh
+
+route-change-netlink: CFLAGS += $(LIBMNL_CFLAGS)
+route-change-netlink: LDLIBS += $(LIBMNL_LIBS)
 
 include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/testcases/network/stress/route/route-change-dst.sh b/testcases/network/stress/route/route-change-dst.sh
index fff79fa6e..9b683f9d6 100755
--- a/testcases/network/stress/route/route-change-dst.sh
+++ b/testcases/network/stress/route/route-change-dst.sh
@@ -9,6 +9,7 @@
 # lhost: 10.0.0.2, rhost: 10.23.x.1
 
 TST_TESTFUNC="test_dst"
+TST_CNT=$NS_TIMES
 . route-lib.sh
 
 setup()
diff --git a/testcases/network/stress/route/route-change-gw.sh b/testcases/network/stress/route/route-change-gw.sh
index fc88ee0f3..f1039633e 100755
--- a/testcases/network/stress/route/route-change-gw.sh
+++ b/testcases/network/stress/route/route-change-gw.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 # SPDX-License-Identifier: GPL-2.0-or-later
-# Copyright (c) 2019 Petr Vorel <pvorel@suse.cz>
+# Copyright (c) 2019-2020 Petr Vorel <pvorel@suse.cz>
 # Copyright (c) International Business Machines Corp., 2006
 # Author: Mitsuru Chinen <mitch@jp.ibm.com>
 # Rewrite into new shell API: Petr Vorel
@@ -9,17 +9,13 @@
 # lhost: 10.23.1.1, gw (on rhost): 10.23.1.x, rhost: 10.23.0.1
 
 TST_TESTFUNC="test_gw"
+TST_CNT=$NS_TIMES
 . route-lib.sh
 
 setup()
 {
 	tst_res TINFO "change IPv$TST_IPVER route gateway $NS_TIMES times"
-
-	rt="$(tst_ipaddr_un -p 0 0)"
-	lhost="$(tst_ipaddr_un 1 1)"
-	rhost="$(tst_ipaddr_un 0 1)"
-	tst_add_ipaddr -s -q -a $lhost
-	tst_add_ipaddr -s -q -a $rhost rhost
+	setup_gw
 }
 
 test_gw()
diff --git a/testcases/network/stress/route/route-change-if.sh b/testcases/network/stress/route/route-change-if.sh
index 77661a45e..40f45df41 100755
--- a/testcases/network/stress/route/route-change-if.sh
+++ b/testcases/network/stress/route/route-change-if.sh
@@ -9,6 +9,7 @@
 # lhost: 10.23.x.2, gw (on rhost): 10.23.x.1, rhost: 10.23.0.1, switching ifaces on lhost
 
 TST_TESTFUNC="test_if"
+TST_CNT=$NS_TIMES
 . route-lib.sh
 TST_CLEANUP="cleanup"
 
diff --git a/testcases/network/stress/route/route-change-netlink-dst.sh b/testcases/network/stress/route/route-change-netlink-dst.sh
new file mode 100755
index 000000000..40e44bb98
--- /dev/null
+++ b/testcases/network/stress/route/route-change-netlink-dst.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (c) 2020 Petr Vorel <pvorel@suse.cz>
+#
+# Change route destination via netlink
+# lhost: 10.0.0.2, rhost: 10.23.x.1
+
+TST_TESTFUNC="test_netlink"
+. route-lib.sh
+
+setup()
+{
+	tst_res TINFO "change IPv$TST_IPVER route destination $NS_TIMES times"
+
+	local cnt=0
+	local gw rhost rhost_all rt
+
+	check_max_ip
+
+	while [ $cnt -lt $NS_TIMES -a $cnt -lt $MAX_IP ]; do
+		rt="$(tst_ipaddr_un -p $cnt)"
+		rhost="$(tst_ipaddr_un $cnt 1)"
+		rhost_all="$rhost^$rhost_all"
+
+		tst_add_ipaddr -s -q -a $rhost rhost
+		ROD ip route add $rt dev $(tst_iface)
+		cnt=$((cnt+1))
+	done
+
+	ROUTE_CHANGE_NETLINK_PARAMS="-l $(tst_ipaddr) -r '$rhost_all'"
+}
+
+tst_run
diff --git a/testcases/network/stress/route/route-change-netlink-gw.sh b/testcases/network/stress/route/route-change-netlink-gw.sh
new file mode 100755
index 000000000..c77b9dffc
--- /dev/null
+++ b/testcases/network/stress/route/route-change-netlink-gw.sh
@@ -0,0 +1,30 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (c) 2020 Petr Vorel <pvorel@suse.cz>
+#
+# Change route gateway via netlink
+# lhost: 10.23.1.1, gw (on rhost): 10.23.1.x, rhost: 10.23.0.1
+
+TST_TESTFUNC="test_netlink"
+. route-lib.sh
+
+setup()
+{
+	tst_res TINFO "change IPv$TST_IPVER route gateway $NS_TIMES times"
+
+	local cnt=0
+
+	check_max_ip
+	setup_gw
+
+	while [ $cnt -lt $NS_TIMES -a $cnt -lt $MAX_IP ]; do
+		gw="$(tst_ipaddr_un -h 2,$max_ip_limit 1 $(($cnt + 1)))"
+		gw_all="$gw^$gw_all"
+		tst_add_ipaddr -s -q -a $gw rhost
+		cnt=$((cnt+1))
+	done
+
+	ROUTE_CHANGE_NETLINK_PARAMS="-g "$gw_all" -l $lhost -r $rhost"
+}
+
+tst_run
diff --git a/testcases/network/stress/route/route-change-netlink.c b/testcases/network/stress/route/route-change-netlink.c
new file mode 100644
index 000000000..c85e9224c
--- /dev/null
+++ b/testcases/network/stress/route/route-change-netlink.c
@@ -0,0 +1,348 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2020 Petr Vorel <pvorel@suse.cz>
+ */
+
+/*
+ * dst: lhost: 10.0.0.2, rhost: 10.23.x.1
+ * gw:  lhost: 10.23.1.1, gw (on rhost): 10.23.1.x, rhost: 10.23.0.1
+ * if:  lhost: 10.23.x.2, gw (on rhost): 10.23.x.1, rhost: 10.23.0.1, switching ifaces on lhost
+ */
+
+#include "config.h"
+#include "tst_test.h"
+
+#ifdef HAVE_LIBMNL
+
+#include <string.h>
+
+#include <libmnl/libmnl.h>
+#include <linux/rtnetlink.h>
+#include <net/if.h>
+#include <netdb.h>
+#include <netinet/in.h>
+
+#include "tst_net.h"
+#include "tst_safe_net.h"
+#include "tst_safe_stdio.h"
+
+#define NS_TIMES_MAX 65535
+
+#define IP_ADDR_DELIMITER '^'
+#define STR(x) #x
+#define CHR2STR(x) STR(x)
+
+static char *c_opt, *d_opt, *g_opt, *ipv6_opt, *l_opt, *p_opt, *r_opt;
+
+static int family = AF_INET;
+static int fd, num_loops, port;
+
+static unsigned int is_ipv6, max, prefix;
+
+static struct mnl_socket *nl;
+static struct addrinfo *lhost_addrinfo, *rhost_addrinfo;
+
+struct in_addr ip;
+struct in6_addr ip6;
+
+union {
+	in_addr_t ip;
+	struct in6_addr ip6;
+} dst;
+
+struct iface {
+	char iface[IFNAMSIZ];
+	unsigned int index;
+	struct iface *next;
+};
+
+struct ip_addr {
+	char ip[INET6_ADDRSTRLEN];
+	struct ip_addr *next;
+};
+
+static struct ip_addr *gw, *lhost, *rhost;
+static struct iface *iface;
+static unsigned int gw_len, iface_len, lhost_len, rhost_len;
+
+void save_iface_str(struct iface **list, const char *item)
+{
+	struct iface *n = SAFE_MALLOC(sizeof(*n));
+
+	strncpy(n->iface, item, sizeof(n->iface));
+	n->iface[sizeof(n->iface)-1] = '\0';
+
+	n->index = if_nametoindex(item);
+	if (!n->index)
+		tst_brk(TBROK, "if_nametoindex failed, '%s' not found", item);
+	n->next = *list;
+	*list = n;
+}
+
+void save_ip_str(struct ip_addr **list, const char *item)
+{
+	struct ip_addr *n = SAFE_MALLOC(sizeof(*n));
+
+	strncpy(n->ip, item, sizeof(n->ip));
+	n->ip[sizeof(n->ip)-1] = '\0';
+
+	n->next = *list;
+	*list = n;
+}
+
+int save_iface(struct iface **list, char *item)
+{
+	int len = 0;
+
+	while ((item = strtok(item, CHR2STR(IP_ADDR_DELIMITER))) != NULL) {
+		save_iface_str(list, item);
+		item = NULL;
+		len++;
+	}
+
+	return len;
+}
+
+int save_ip(struct ip_addr **list, char *item)
+{
+	int len = 0;
+
+	while ((item = strtok(item, CHR2STR(IP_ADDR_DELIMITER))) != NULL) {
+		save_ip_str(list, item);
+		item = NULL;
+		len++;
+	}
+
+	return len;
+}
+
+static void setup(void)
+{
+	prefix = 24;
+	if (ipv6_opt) {
+		family = AF_INET6;
+		is_ipv6 = 1;
+		prefix = 64;
+	}
+	if (!c_opt)
+		tst_brk(TBROK, "missing number of loops (-c num)");
+
+	if (!d_opt)
+		tst_brk(TBROK, "Missing iface (-d iface)");
+
+	if (!l_opt)
+		tst_brk(TBROK, "Missing lhost IP (-l IP)");
+
+	if (!p_opt)
+		tst_brk(TBROK, "Missing rhost port (-p port)");
+
+	if (!r_opt)
+		tst_brk(TBROK, "Missing rhost IP (-r IP)");
+
+	if (tst_parse_int(p_opt, &port, 1, 65535))
+		tst_brk(TBROK, "invalid rhost port '%s'", p_opt);
+
+	if (tst_parse_int(c_opt, &num_loops, 1, 65535))
+		tst_brk(TBROK, "invalid number of loops '%s'", c_opt);
+
+	iface_len = save_iface(&iface, d_opt);
+	lhost_len = save_ip(&lhost, l_opt);
+	rhost_len = save_ip(&rhost, r_opt);
+
+	max = MAX(lhost_len, rhost_len);
+	if (lhost_len > 1 && rhost_len > 1 && lhost_len != rhost_len)
+		tst_brk(TBROK, "-l and -r have more IP, they need to have the same count");
+
+	max = MAX(iface_len, max);
+	if (iface_len > 1 && max > 1 && iface_len != max)
+		tst_brk(TBROK, "-d has more NIC and %s has more IP, they need to have the same count",
+				lhost_len > 1 ? "-l" : "-r");
+
+	if (g_opt) {
+		gw_len = save_ip(&gw, g_opt);
+		max = MAX(gw_len, max);
+
+		if (gw_len > 1 && max > 1 && gw_len != max) {
+			if (iface_len == max)
+				tst_brk(TBROK, "-d has more NIC and -g has more IP, they need to have the same count");
+			else
+				tst_brk(TBROK, "-g and %s have more IP, they need to have the same count",
+						lhost_len > 1 ? "-l" : "-r");
+		}
+	}
+}
+
+static void cleanup(void)
+{
+	if (fd > 0)
+		close(fd);
+
+	if (nl)
+		mnl_socket_close(nl);
+
+	if (lhost_addrinfo)
+		freeaddrinfo(lhost_addrinfo);
+
+	if (rhost_addrinfo)
+		freeaddrinfo(rhost_addrinfo);
+}
+
+static void rtnl_route(int iface, char *destination, uint32_t prefix, char
+		       *gateway, int type)
+{
+	union {
+		in_addr_t ip;
+		struct in6_addr ip6;
+	} dst;
+	union {
+		in_addr_t ip;
+		struct in6_addr ip6;
+	} gw;
+
+	struct mnl_socket *nl;
+	char buf[MNL_SOCKET_BUFFER_SIZE];
+	struct nlmsghdr *nlh;
+	struct rtmsg *rtm;
+	uint32_t seq, portid;
+	int ret;
+
+	if (!inet_pton(family, destination, &dst))
+		tst_brk(TBROK, "inet_pton failed ('%s', errno=%d): %s",
+			destination, errno, strerror(errno));
+
+	if (gateway && !inet_pton(family, gateway, &gw))
+		tst_brk(TBROK, "inet_pton failed ('%s', errno=%d): %s", gateway,
+			errno, strerror(errno));
+
+	nlh = mnl_nlmsg_put_header(buf);
+	nlh->nlmsg_type	= type;
+	nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
+	nlh->nlmsg_seq = seq = time(NULL);
+
+	rtm = mnl_nlmsg_put_extra_header(nlh, sizeof(struct rtmsg));
+	rtm->rtm_family = family;
+	rtm->rtm_dst_len = prefix;
+	rtm->rtm_src_len = 0;
+	rtm->rtm_tos = 0;
+	rtm->rtm_protocol = RTPROT_STATIC;
+	rtm->rtm_table = RT_TABLE_MAIN;
+	rtm->rtm_type = RTN_UNICAST;
+	rtm->rtm_scope = (gateway) ? RT_SCOPE_UNIVERSE : RT_SCOPE_LINK;
+	rtm->rtm_flags = 0;
+
+	if (is_ipv6)
+		mnl_attr_put(nlh, RTA_DST, sizeof(struct in6_addr), &dst);
+	else
+		mnl_attr_put_u32(nlh, RTA_DST, dst.ip);
+
+	mnl_attr_put_u32(nlh, RTA_OIF, iface);
+	if (gateway) {
+		if (is_ipv6)
+			mnl_attr_put(nlh, RTA_GATEWAY, sizeof(struct in6_addr),
+					&gw.ip6);
+		else
+			mnl_attr_put_u32(nlh, RTA_GATEWAY, gw.ip);
+	}
+
+	nl = mnl_socket_open(NETLINK_ROUTE);
+	if (nl == NULL)
+		tst_brk(TBROK, "mnl_socket_open failed (errno=%d): %s", errno,
+			strerror(errno));
+
+	if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0)
+		tst_brk(TBROK, "mnl_socket_bind failed (errno=%d): %s", errno,
+			strerror(errno));
+
+	portid = mnl_socket_get_portid(nl);
+
+	if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0)
+		tst_brk(TBROK, "mnl_socket_sendto failed (errno=%d): %s", errno,
+			strerror(errno));
+
+	ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+	if (ret < 0)
+		tst_brk(TBROK, "mnl_socket_recvfrom failed (ret=%d, errno=%d): %s",
+			ret, errno, strerror(errno));
+
+	ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL);
+	if (ret < 0)
+		tst_brk(TBROK, "mnl_cb_run failed (ret=%d, errno=%d): %s", ret,
+			errno, strerror(errno));
+
+	mnl_socket_close(nl);
+}
+
+static void send_udp(char *local, char *remote)
+{
+	fd = SAFE_SOCKET(family, SOCK_DGRAM, IPPROTO_UDP);
+
+	struct addrinfo hints;
+	memset(&hints, 0, sizeof(struct addrinfo));
+	hints.ai_family = family;
+	hints.ai_socktype = SOCK_DGRAM;
+	hints.ai_flags = 0;
+	hints.ai_protocol = 0;
+	hints.ai_addr = INADDR_ANY;
+
+	tst_setup_addrinfo(local, NULL, &hints, &lhost_addrinfo);
+	tst_setup_addrinfo(remote, p_opt, &hints, &rhost_addrinfo);
+
+	SAFE_SENDTO(1, fd, remote, sizeof(remote), MSG_CONFIRM,
+		rhost_addrinfo->ai_addr, rhost_addrinfo->ai_addrlen);
+
+	close(fd);
+}
+
+static void run(void)
+{
+	int i;
+
+	tst_res(TINFO, "adding and deleting route with different destination %d times", num_loops);
+
+	struct ip_addr *p_gw = gw, *p_lhost = lhost, *p_rhost = rhost;
+	struct iface *p_iface = iface;
+	char dst[INET6_ADDRSTRLEN];
+
+	for (i = 0; i < num_loops; i++) {
+		if (!strncpy(dst, rhost->ip, sizeof(dst)))
+			tst_brk(TBROK, "failed copy IP '%s'", rhost->ip);
+		dst[strlen(rhost->ip)-1] = '\0';
+
+		if (!strcat(dst, "0"))
+			tst_brk(TBROK, "strcat failed: '%s'", dst);
+
+		rtnl_route(iface->index, dst, prefix, gw->ip, RTM_NEWROUTE);
+		send_udp(lhost->ip, rhost->ip);
+		rtnl_route(iface->index, dst, prefix, gw->ip, RTM_DELROUTE);
+
+		if (gw)
+			gw = gw->next ?: p_gw;
+		iface = iface->next ?: p_iface;
+		lhost = lhost->next ?: p_lhost;
+		rhost = rhost->next ?: p_rhost;
+	}
+
+	tst_res(TPASS, "routes created and deleted");
+}
+
+static struct tst_option options[] = {
+	{"6", &ipv6_opt, "-6       Use IPv6 (default is IPv4)"},
+	{"c:", &c_opt, "         num loops (mandatory)"},
+	{"d:", &d_opt, "-d iface Interface to work on (mandatory)"},
+	{"g:", &g_opt, "-g x     gateway IP"},
+	{"l:", &l_opt, "-l x     lhost IP (mandatory)"},
+	{"p:", &p_opt, "-p port  rhost port (mandatory)"},
+	{"r:", &r_opt, "-r x     rhost IP (mandatory)\n\n-g, -l, -g IP paramter can contain more IP, separated by "
+		CHR2STR(IP_ADDR_DELIMITER)},
+	{NULL, NULL, NULL}
+};
+static struct tst_test test = {
+	.test_all = run,
+	.needs_root = 1,
+	.setup = setup,
+	.cleanup = cleanup,
+	.options = options,
+};
+#else
+	TST_TEST_TCONF("libmnl library and headers are required");
+#endif /* HAVE_LIBMNL */
diff --git a/testcases/network/stress/route/route-lib.sh b/testcases/network/stress/route/route-lib.sh
index 4afbe6323..dd0f949b7 100644
--- a/testcases/network/stress/route/route-lib.sh
+++ b/testcases/network/stress/route/route-lib.sh
@@ -6,10 +6,42 @@ TST_NEEDS_ROOT=1
 TST_SETUP="setup"
 TST_CLEANUP="route_cleanup"
 TST_NEEDS_CMDS="ip"
-TST_CNT=$NS_TIMES
 
 . tst_net.sh
 
+MAX_IP=${MAX_IP:-5}
+
+check_max_ip()
+{
+	local max_ip_limit=254
+	[ "$TST_IPV6" ] && max_ip_limit=65534
+
+	tst_is_int $MAX_IP || tst_brk TBROK "\$MAX_IP not int ($MAX_IP)"
+	[ "$MAX_IP" -gt $max_ip_limit ] && MAX_IP=$max_ip_limit
+}
+
+setup_gw()
+{
+	tst_res TINFO "change IPv$TST_IPVER route gateway $NS_TIMES times"
+
+	rt="$(tst_ipaddr_un -p 0 0)"
+	lhost="$(tst_ipaddr_un 1 1)"
+	rhost="$(tst_ipaddr_un 0 1)"
+	tst_add_ipaddr -s -q -a $lhost
+	tst_add_ipaddr -s -q -a $rhost rhost
+}
+
+
+test_netlink()
+{
+	local ip_flag
+	[ "$TST_IPV6" ] && ip_flag="-6"
+
+	local port=$(tst_rhost_run -s -c "tst_get_unused_port ipv${TST_IPVER} dgram")
+
+	EXPECT_PASS route-change-netlink -c $NS_TIMES -d $(tst_iface) $ip_flag -p $port $ROUTE_CHANGE_NETLINK_PARAMS
+}
+
 route_cleanup()
 {
 	tst_restore_ipaddr
diff --git a/travis/debian.cross-compile.sh b/travis/debian.cross-compile.sh
index 67307d1e1..08c3805aa 100755
--- a/travis/debian.cross-compile.sh
+++ b/travis/debian.cross-compile.sh
@@ -20,4 +20,5 @@ apt update
 apt install -y --no-install-recommends \
 	gcc-${gcc_arch}-linux-gnu \
 	libc6-dev-${ARCH}-cross \
+	libmnl-dev:$ARCH \
 	libtirpc-dev:$ARCH
diff --git a/travis/debian.sh b/travis/debian.sh
index 97fa91a0d..b759a9576 100755
--- a/travis/debian.sh
+++ b/travis/debian.sh
@@ -28,6 +28,7 @@ apt install -y --no-install-recommends \
 	libkeyutils-dev \
 	libkeyutils1 \
 	libmm-dev \
+	libmnl-dev \
 	libnuma-dev \
 	libnuma1 \
 	libselinux1-dev \
diff --git a/travis/fedora.sh b/travis/fedora.sh
index d68e7573e..990a84daf 100755
--- a/travis/fedora.sh
+++ b/travis/fedora.sh
@@ -13,3 +13,6 @@ yum -y install \
 	libtirpc-devel \
 	pkg-config \
 	redhat-lsb-core
+
+# CentOS 8 doesn't have libmnl-devel
+yum -y install libmnl-devel || yum -y install libmnl
diff --git a/travis/tumbleweed.sh b/travis/tumbleweed.sh
index 4dd71fd13..8143fc885 100755
--- a/travis/tumbleweed.sh
+++ b/travis/tumbleweed.sh
@@ -15,6 +15,7 @@ zypper --non-interactive install --no-recommends \
 	libacl-devel \
 	libaio-devel \
 	libcap-devel \
+	libmnl-devel \
 	libnuma-devel \
 	libopenssl-devel \
 	libselinux-devel \
-- 
2.26.0



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