git: 46b600875685 - stable/13 - pf tests: Test that dup-to doesn't produce extra duplicate packets
Kristof Provost
kp at FreeBSD.org
Tue Feb 23 11:50:39 UTC 2021
The branch stable/13 has been updated by kp:
URL: https://cgit.FreeBSD.org/src/commit/?id=46b6008756858eae5bef28fe0fa4d87e8913ab38
commit 46b6008756858eae5bef28fe0fa4d87e8913ab38
Author: Kristof Provost <kp at FreeBSD.org>
AuthorDate: 2021-01-28 10:02:20 +0000
Commit: Kristof Provost <kp at FreeBSD.org>
CommitDate: 2021-02-23 11:46:25 +0000
pf tests: Test that dup-to doesn't produce extra duplicate packets
(cherry picked from commit cd579b6fba46b9f5005358d1e82def7b26703224)
---
tests/sys/netpfil/common/pft_ping.py | 32 ++++++++++++++
tests/sys/netpfil/common/sniffer.py | 7 +++-
tests/sys/netpfil/pf/Makefile | 1 +
tests/sys/netpfil/pf/dup.sh | 81 ++++++++++++++++++++++++++++++++++++
4 files changed, 119 insertions(+), 2 deletions(-)
diff --git a/tests/sys/netpfil/common/pft_ping.py b/tests/sys/netpfil/common/pft_ping.py
index d960426e4b42..812250803309 100644
--- a/tests/sys/netpfil/common/pft_ping.py
+++ b/tests/sys/netpfil/common/pft_ping.py
@@ -34,6 +34,27 @@ from sniffer import Sniffer
PAYLOAD_MAGIC = bytes.fromhex('42c0ffee')
+dup_found = 0
+
+def check_dup(args, packet):
+ """
+ Verify that this is an ICMP packet, and that we only see one
+ """
+ global dup_found
+
+ icmp = packet.getlayer(sp.ICMP)
+ if not icmp:
+ return False
+
+ raw = packet.getlayer(sp.Raw)
+ if not raw:
+ return False
+ if raw.load != PAYLOAD_MAGIC:
+ return False
+
+ dup_found = dup_found + 1
+ return False
+
def check_ping_request(args, packet):
if args.ip6:
return check_ping6_request(args, packet)
@@ -169,6 +190,8 @@ def main():
help='The interface through which the packet(s) will be sent')
parser.add_argument('--recvif', nargs=1,
help='The interface on which to expect the ICMP echo response')
+ parser.add_argument('--checkdup', nargs=1,
+ help='The interface on which to expect the duplicated ICMP packets')
parser.add_argument('--ip6', action='store_true',
help='Use IPv6')
parser.add_argument('--to', nargs=1,
@@ -202,6 +225,10 @@ def main():
sniffer = Sniffer(args, checkfn)
+ dupsniffer = None
+ if args.checkdup is not None:
+ dupsniffer = Sniffer(args, check_dup, recvif=args.checkdup[0])
+
if args.tcpsyn:
tcpsyn(args.sendif[0], args.to[0], args)
else:
@@ -210,6 +237,11 @@ def main():
else:
ping(args.sendif[0], args.to[0], args)
+ if dupsniffer:
+ dupsniffer.join()
+ if dup_found != 1:
+ sys.exit(1)
+
if sniffer:
sniffer.join()
diff --git a/tests/sys/netpfil/common/sniffer.py b/tests/sys/netpfil/common/sniffer.py
index 58df32cce276..200ac750dd7f 100644
--- a/tests/sys/netpfil/common/sniffer.py
+++ b/tests/sys/netpfil/common/sniffer.py
@@ -30,11 +30,14 @@ import threading
import scapy.all as sp
class Sniffer(threading.Thread):
- def __init__(self, args, check_function):
+ def __init__(self, args, check_function, recvif=None):
threading.Thread.__init__(self)
self._args = args
- self._recvif = args.recvif[0]
+ if recvif is not None:
+ self._recvif = recvif
+ else:
+ self._recvif = args.recvif[0]
self._check_function = check_function
self.foundCorrectPacket = False
diff --git a/tests/sys/netpfil/pf/Makefile b/tests/sys/netpfil/pf/Makefile
index 68f54c801297..6b1e34b69a6d 100644
--- a/tests/sys/netpfil/pf/Makefile
+++ b/tests/sys/netpfil/pf/Makefile
@@ -7,6 +7,7 @@ TESTS_SUBDIRS+= ioctl
ATF_TESTS_SH+= anchor \
checksum \
+ dup \
forward \
fragmentation \
icmp \
diff --git a/tests/sys/netpfil/pf/dup.sh b/tests/sys/netpfil/pf/dup.sh
new file mode 100644
index 000000000000..7b9a91804e96
--- /dev/null
+++ b/tests/sys/netpfil/pf/dup.sh
@@ -0,0 +1,81 @@
+# $FreeBSD$
+#
+# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+#
+# Copyright (c) 2021 Kristof Provost <kp at FreeBSD.org>
+#
+# 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.
+
+. $(atf_get_srcdir)/utils.subr
+
+common_dir=$(atf_get_srcdir)/../common
+
+atf_test_case "dup_to" "cleanup"
+do_to_head()
+{
+ atf_set descr 'dup-to test'
+ atf_set require.user root
+}
+
+dup_to_body()
+{
+ pft_init
+
+ epair_send=$(vnet_mkepair)
+ ifconfig ${epair_send}a 192.0.2.1/24 up
+
+ epair_recv=$(vnet_mkepair)
+ ifconfig ${epair_recv}a up
+
+ epair_dupto=$(vnet_mkepair)
+ ifconfig ${epair_dupto}a up
+
+ vnet_mkjail alcatraz ${epair_send}b ${epair_recv}b ${epair_dupto}b
+ jexec alcatraz ifconfig ${epair_send}b 192.0.2.2/24 up
+ jexec alcatraz ifconfig ${epair_recv}b 198.51.100.2/24 up
+ jexec alcatraz ifconfig ${epair_dupto}b 203.0.113.2/24 up
+ jexec alcatraz sysctl net.inet.ip.forwarding=1
+ jexec alcatraz arp -s 198.51.100.3 00:01:02:03:04:05
+ jexec alcatraz arp -s 203.0.113.3 01:02:03:04:05:06
+ route add -net 198.51.100.0/24 192.0.2.2
+
+ jexec alcatraz pfctl -e
+
+ pft_set_rules alcatraz "pass out on { ${epair_recv}b } \
+ dup-to (${epair_dupto}b 203.0.113.3)"
+
+ atf_check -s exit:0 ${common_dir}/pft_ping.py \
+ --sendif ${epair_send}a \
+ --to 198.51.100.3 \
+ --recv ${epair_recv}a \
+ --checkdup ${epair_dupto}a
+}
+
+dup_to_cleanup()
+{
+ pft_cleanup
+}
+
+atf_init_test_cases()
+{
+ atf_add_test_case "dup_to"
+}
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