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diff --git a/tests/sys/netpfil/pf/Makefile b/tests/sys/netpfil/pf/Makefile
--- a/tests/sys/netpfil/pf/Makefile
+++ b/tests/sys/netpfil/pf/Makefile
@@ -40,6 +40,7 @@
tos
ATF_TESTS_PYTEST+= frag6.py
+ATF_TESTS_PYTEST+= sctp.py
# Tests reuse jail names and so cannot run in parallel.
TEST_METADATA+= is_exclusive=true
diff --git a/tests/sys/netpfil/pf/sctp.py b/tests/sys/netpfil/pf/sctp.py
new file mode 100644
--- /dev/null
+++ b/tests/sys/netpfil/pf/sctp.py
@@ -0,0 +1,442 @@
+import pytest
+import ctypes
+import socket
+import ipaddress
+import re
+from atf_python.sys.net.tools import ToolsHelper
+from atf_python.sys.net.vnet import VnetTestTemplate
+
+import time
+
+SCTP_UNORDERED = 0x0400
+
+SCTP_NODELAY = 0x00000004
+SCTP_SET_PEER_PRIMARY_ADDR = 0x00000006
+SCTP_PRIMARY_ADDR = 0x00000007
+
+SCTP_BINDX_ADD_ADDR = 0x00008001
+SCTP_BINDX_REM_ADDR = 0x00008002
+
+class sockaddr_in(ctypes.Structure):
+ _fields_ = [
+ ('sin_len', ctypes.c_uint8),
+ ('sin_family', ctypes.c_uint8),
+ ('sin_port', ctypes.c_uint16),
+ ('sin_addr', ctypes.c_uint32),
+ ('sin_zero', ctypes.c_int8 * 8)
+ ]
+
+class sockaddr_in6(ctypes.Structure):
+ _fields_ = [
+ ('sin6_len', ctypes.c_uint8),
+ ('sin6_family', ctypes.c_uint8),
+ ('sin6_port', ctypes.c_uint16),
+ ('sin6_flowinfo', ctypes.c_uint32),
+ ('sin6_addr', ctypes.c_uint8 * 16),
+ ('sin6_scope_id', ctypes.c_uint32)
+ ]
+
+class sockaddr_storage(ctypes.Union):
+ _fields_ = [
+ ("v4", sockaddr_in),
+ ("v6", sockaddr_in6)
+ ]
+
+class sctp_sndrcvinfo(ctypes.Structure):
+ _fields_ = [
+ ('sinfo_stream', ctypes.c_uint16),
+ ('sinfo_ssn', ctypes.c_uint16),
+ ('sinfo_flags', ctypes.c_uint16),
+ ('sinfo_ppid', ctypes.c_uint32),
+ ('sinfo_context', ctypes.c_uint32),
+ ('sinfo_timetolive', ctypes.c_uint32),
+ ('sinfo_tsn', ctypes.c_uint32),
+ ('sinfo_cumtsn', ctypes.c_uint32),
+ ('sinfo_assoc_id', ctypes.c_uint32),
+ ]
+
+class sctp_setprim(ctypes.Structure):
+ _fields_ = [
+ ('ssp_addr', sockaddr_storage),
+ ('ssp_pad', ctypes.c_int8 * (128 - 16)),
+ ('ssp_assoc_id', ctypes.c_uint32),
+ ('ssp_padding', ctypes.c_uint32)
+ ]
+
+def to_sockaddr(ip, port):
+ ip = ipaddress.ip_address(ip)
+
+ if ip.version == 4:
+ addr = sockaddr_in()
+ addr.sin_len = ctypes.sizeof(addr)
+ addr.sin_family = socket.AF_INET
+ addr.sin_port = socket.htons(port)
+ addr.sin_addr = socket.htonl(int.from_bytes(ip.packed, byteorder='big'))
+ else:
+ assert ip.version == 6
+
+ addr = sockaddr_in6()
+ addr.sin6_len = ctypes.sizeof(addr)
+ addr.sin6_family = socket.AF_INET6
+ addr.sin6_port = socket.htons(port)
+ for i in range(0, 16):
+ addr.sin6_addr[i] = ip.packed[i]
+
+ return addr
+
+class SCTPServer:
+ def __init__(self, family, port=1234):
+ self._libc = ctypes.CDLL("libc.so.7", use_errno=True)
+
+ self._listen_fd = self._libc.socket(family, socket.SOCK_STREAM, socket.IPPROTO_SCTP)
+ if self._listen_fd == -1:
+ raise Exception("Failed to create socket")
+
+ if family == socket.AF_INET:
+ srvaddr = sockaddr_in()
+ srvaddr.sin_len = ctypes.sizeof(srvaddr)
+ srvaddr.sin_family = socket.AF_INET
+ srvaddr.sin_port = socket.htons(port)
+ srvaddr.sin_addr = socket.INADDR_ANY
+ else:
+ srvaddr = sockaddr_in6()
+ srvaddr.sin6_len = ctypes.sizeof(srvaddr)
+ srvaddr.sin6_family = family
+ srvaddr.sin6_port = socket.htons(port)
+ # Leave sin_addr empty, because ANY is zero
+
+ ret = self._libc.bind(self._listen_fd, ctypes.pointer(srvaddr),
+ ctypes.sizeof(srvaddr))
+ if ret == -1:
+ raise Exception("Failed to bind: %d" % ctypes.get_errno())
+
+ ret = self._libc.listen(self._listen_fd, 2)
+ if ret == -1:
+ raise Exception("Failed to listen")
+
+ def _to_string(self, buf):
+ return ''.join([chr(int.from_bytes(i, byteorder='big')) for i in buf]).rstrip('\x00')
+
+ def accept(self, vnet):
+ fd = self._libc.accept(self._listen_fd, 0, 0)
+ if fd < 0:
+ raise Exception("Failed to accept")
+
+ print("SCTPServer: connection opened")
+ while True:
+ rcvinfo = sctp_sndrcvinfo()
+ flags = ctypes.c_int()
+ buf = ctypes.create_string_buffer(128)
+
+ # Receive a single message, and inform the other vnet about it.
+ ret = self._libc.sctp_recvmsg(fd, ctypes.cast(buf, ctypes.c_void_p), 128,
+ 0, 0, ctypes.pointer(rcvinfo), ctypes.pointer(flags))
+ if ret < 0:
+ print("SCTPServer: connection closed")
+ return
+ if ret == 0:
+ continue
+
+ rcvd = {}
+ rcvd['ppid'] = socket.ntohl(rcvinfo.sinfo_ppid)
+ rcvd['data'] = self._to_string(buf)
+ rcvd['len'] = ret
+ print(rcvd)
+ vnet.pipe.send(rcvd)
+
+class SCTPClient:
+ def __init__(self, ip, port=1234, fromaddr=None):
+ self._libc = ctypes.CDLL("libc.so.7", use_errno=True)
+
+ if ipaddress.ip_address(ip).version == 4:
+ family = socket.AF_INET
+ else:
+ family = socket.AF_INET6
+
+ self._fd = self._libc.socket(family, socket.SOCK_STREAM,
+ socket.IPPROTO_SCTP)
+ if self._fd == -1:
+ raise Exception("Failed to open socket")
+
+ if fromaddr is not None:
+ addr = to_sockaddr(fromaddr, 0)
+
+ ret = self._libc.bind(self._fd, ctypes.pointer(addr), ctypes.sizeof(addr))
+ if ret != 0:
+ print("bind() => %d", ctypes.get_errno())
+ raise
+
+ addr = to_sockaddr(ip, port)
+ ret = self._libc.connect(self._fd, ctypes.pointer(addr), ctypes.sizeof(addr))
+ if ret == -1:
+ raise Exception("Failed to connect")
+
+ # Enable NODELAY, because otherwise the sending host may wait for SACK
+ # on a data chunk we've removed
+ enable = ctypes.c_int(1)
+ ret = self._libc.setsockopt(self._fd, socket.IPPROTO_SCTP,
+ SCTP_NODELAY, ctypes.pointer(enable), 4)
+
+ def newpeer(self, addr):
+ print("newpeer(%s)" % (addr))
+
+ setp = sctp_setprim()
+ a = to_sockaddr(addr, 0)
+ if type(a) is sockaddr_in:
+ setp.ssp_addr.v4 = a
+ else:
+ assert type(a) is sockaddr_in6
+ setp.ssp_addr.v6 = a
+
+ ret = self._libc.setsockopt(self._fd, socket.IPPROTO_SCTP,
+ SCTP_PRIMARY_ADDR, ctypes.pointer(setp), ctypes.sizeof(setp))
+ if ret != 0:
+ print("errno %d" % ctypes.get_errno())
+ raise Exception(ctypes.get_errno())
+
+ def newprimary(self, addr):
+ print("newprimary(%s)" % (addr))
+
+ # Strictly speaking needs to be struct sctp_setpeerprim, but that's
+ # identical to sctp_setprim
+ setp = sctp_setprim()
+ a = to_sockaddr(addr, 0)
+ if type(a) is sockaddr_in:
+ setp.ssp_addr.v4 = a
+ else:
+ assert type(a) is sockaddr_in6
+ setp.ssp_addr.v6 = a
+
+ ret = self._libc.setsockopt(self._fd, socket.IPPROTO_SCTP,
+ SCTP_SET_PEER_PRIMARY_ADDR, ctypes.pointer(setp), ctypes.sizeof(setp))
+ if ret != 0:
+ print("errno %d" % ctypes.get_errno())
+ raise
+
+ def bindx(self, addr, add):
+ print("bindx(%s, %s)" % (addr, add))
+
+ addr = to_sockaddr(addr, 0)
+
+ if add:
+ flag = SCTP_BINDX_ADD_ADDR
+ else:
+ flag = SCTP_BINDX_REM_ADDR
+ ret = self._libc.sctp_bindx(self._fd, ctypes.pointer(addr), 1, flag)
+ if ret != 0:
+ print("sctp_bindx() errno %d" % ctypes.get_errno())
+ raise
+
+ def send(self, buf, ppid, ordered=False):
+ flags = 0
+
+ if not ordered:
+ flags = SCTP_UNORDERED
+
+ ppid = socket.htonl(ppid)
+ ret = self._libc.sctp_sendmsg(self._fd, ctypes.c_char_p(buf), len(buf),
+ ctypes.c_void_p(0), 0, ppid, flags, 0, 0, 0)
+ if ret < 0:
+ raise Exception("Failed to send message")
+
+ def close(self):
+ self._libc.close(self._fd)
+ self._fd = -1
+
+class TestSCTP(VnetTestTemplate):
+ REQUIRED_MODULES = ["sctp", "pf"]
+ TOPOLOGY = {
+ "vnet1": {"ifaces": ["if1"]},
+ "vnet2": {"ifaces": ["if1"]},
+ "if1": {"prefixes4": [("192.0.2.1/24", "192.0.2.2/24")]},
+ }
+
+ def vnet2_handler(self, vnet):
+ # Give ourself a second IP address, for multihome testing
+ ifname = vnet.iface_alias_map["if1"].name
+ ToolsHelper.print_output("/sbin/ifconfig %s inet alias 192.0.2.3/24" % ifname)
+
+ # Start an SCTP server process, pipe the ppid + data back to the other vnet?
+ srv = SCTPServer(socket.AF_INET, port=1234)
+ while True:
+ srv.accept(vnet)
+
+ @pytest.mark.require_user("root")
+ def test_multihome(self):
+ srv_vnet = self.vnet_map["vnet2"]
+
+ ToolsHelper.print_output("/sbin/pfctl -e")
+ ToolsHelper.pf_rules([
+ "block proto sctp",
+ "pass inet proto sctp to 192.0.2.0/24"])
+
+ # Sanity check, we can communicate with the primary address.
+ client = SCTPClient("192.0.2.3", 1234)
+ client.send(b"hello", 0)
+ rcvd = self.wait_object(srv_vnet.pipe)
+ print(rcvd)
+ assert rcvd['ppid'] == 0
+ assert rcvd['data'] == "hello"
+
+ try:
+ client.newpeer("192.0.2.2")
+ client.send(b"world", 0)
+ rcvd = self.wait_object(srv_vnet.pipe)
+ print(rcvd)
+ assert rcvd['ppid'] == 0
+ assert rcvd['data'] == "world"
+ finally:
+ # Debug output
+ ToolsHelper.print_output("/sbin/pfctl -ss")
+ ToolsHelper.print_output("/sbin/pfctl -sr -vv")
+
+ # Check that we have a state for 192.0.2.3 and 192.0.2.2 to 192.0.2.1
+ states = ToolsHelper.get_output("/sbin/pfctl -ss")
+ assert re.search(r"all sctp 192.0.2.1:.*192.0.2.3:1234", states)
+ assert re.search(r"all sctp 192.0.2.1:.*192.0.2.2:1234", states)
+
+ @pytest.mark.require_user("root")
+ def test_multihome_asconf(self):
+ srv_vnet = self.vnet_map["vnet2"]
+
+ # Assign a second IP to ourselves
+ ToolsHelper.print_output("/sbin/ifconfig %s inet alias 192.0.2.10/24"
+ % self.vnet.iface_alias_map["if1"].name)
+ ToolsHelper.print_output("/sbin/pfctl -e")
+ ToolsHelper.pf_rules([
+ "block proto sctp",
+ "pass inet proto sctp from 192.0.2.0/24"])
+
+ # Sanity check, we can communicate with the primary address.
+ client = SCTPClient("192.0.2.3", 1234, "192.0.2.1")
+ client.send(b"hello", 0)
+ rcvd = self.wait_object(srv_vnet.pipe)
+ print(rcvd)
+ assert rcvd['ppid'] == 0
+ assert rcvd['data'] == "hello"
+
+ # Now add our second address to the connection
+ client.bindx("192.0.2.10", True)
+
+ # We can still communicate
+ client.send(b"world", 0)
+ rcvd = self.wait_object(srv_vnet.pipe)
+ print(rcvd)
+ assert rcvd['ppid'] == 0
+ assert rcvd['data'] == "world"
+
+ # Now change to a different peer address
+ try:
+ client.newprimary("192.0.2.10")
+ client.send(b"!", 0)
+ rcvd = self.wait_object(srv_vnet.pipe, 5)
+ print(rcvd)
+ assert rcvd['ppid'] == 0
+ assert rcvd['data'] == "!"
+ finally:
+ # Debug output
+ ToolsHelper.print_output("/sbin/pfctl -ss -vv")
+
+ # Ensure we have the states we'd expect
+ states = ToolsHelper.get_output("/sbin/pfctl -ss")
+ assert re.search(r"all sctp 192.0.2.1:.*192.0.2.3:1234", states)
+ assert re.search(r"all sctp 192.0.2.10:.*192.0.2.3:1234", states)
+
+class TestSCTPv6(VnetTestTemplate):
+ REQUIRED_MODULES = ["sctp", "pf"]
+ TOPOLOGY = {
+ "vnet1": {"ifaces": ["if1"]},
+ "vnet2": {"ifaces": ["if1"]},
+ "if1": {"prefixes6": [("2001:db8::1/64", "2001:db8::2/64")]},
+ }
+
+ def vnet2_handler(self, vnet):
+ # Give ourself a second IP address, for multihome testing
+ ifname = vnet.iface_alias_map["if1"].name
+ ToolsHelper.print_output("/sbin/ifconfig %s inet6 alias 2001:db8::3/64" % ifname)
+
+ # Start an SCTP server process, pipe the ppid + data back to the other vnet?
+ srv = SCTPServer(socket.AF_INET6, port=1234)
+ while True:
+ srv.accept(vnet)
+
+ @pytest.mark.require_user("root")
+ def test_multihome(self):
+ srv_vnet = self.vnet_map["vnet2"]
+
+ ToolsHelper.print_output("/sbin/pfctl -e")
+ ToolsHelper.pf_rules([
+ "block proto sctp",
+ "pass inet6 proto sctp to 2001:db8::0/64"])
+
+ # Sanity check, we can communicate with the primary address.
+ client = SCTPClient("2001:db8::3", 1234)
+ client.send(b"hello", 0)
+ rcvd = self.wait_object(srv_vnet.pipe)
+ print(rcvd)
+ assert rcvd['ppid'] == 0
+ assert rcvd['data'] == "hello"
+
+ # Now change to a different peer address
+ try:
+ client.newpeer("2001:db8::2")
+ client.send(b"world", 0)
+ rcvd = self.wait_object(srv_vnet.pipe)
+ print(rcvd)
+ assert rcvd['ppid'] == 0
+ assert rcvd['data'] == "world"
+ finally:
+ # Debug output
+ ToolsHelper.print_output("/sbin/pfctl -ss -vv")
+
+ # Check that we have the expected states
+ states = ToolsHelper.get_output("/sbin/pfctl -ss")
+ assert re.search(r"all sctp 2001:db8::1\[.*2001:db8::3\[1234\]", states)
+ assert re.search(r"all sctp 2001:db8::1\[.*2001:db8::2\[1234\]", states)
+
+ @pytest.mark.require_user("root")
+ def test_multihome_asconf(self):
+ srv_vnet = self.vnet_map["vnet2"]
+
+ # Assign a second IP to ourselves
+ ToolsHelper.print_output("/sbin/ifconfig %s inet6 alias 2001:db8::10/64"
+ % self.vnet.iface_alias_map["if1"].name)
+ ToolsHelper.print_output("/sbin/pfctl -e")
+ ToolsHelper.pf_rules([
+ "block proto sctp",
+ "pass inet6 proto sctp from 2001:db8::/64"])
+
+ # Sanity check, we can communicate with the primary address.
+ client = SCTPClient("2001:db8::3", 1234, "2001:db8::1")
+ client.send(b"hello", 0)
+ rcvd = self.wait_object(srv_vnet.pipe)
+ print(rcvd)
+ assert rcvd['ppid'] == 0
+ assert rcvd['data'] == "hello"
+
+ # Now add our second address to the connection
+ client.bindx("2001:db8::10", True)
+
+ # We can still communicate
+ client.send(b"world", 0)
+ rcvd = self.wait_object(srv_vnet.pipe)
+ print(rcvd)
+ assert rcvd['ppid'] == 0
+ assert rcvd['data'] == "world"
+
+ # Now change to a different peer address
+ try:
+ client.newprimary("2001:db8::10")
+ client.send(b"!", 0)
+ rcvd = self.wait_object(srv_vnet.pipe, 5)
+ print(rcvd)
+ assert rcvd['ppid'] == 0
+ assert rcvd['data'] == "!"
+ finally:
+ # Debug output
+ ToolsHelper.print_output("/sbin/pfctl -ss -vv")
+
+ # Check that we have the expected states
+ states = ToolsHelper.get_output("/sbin/pfctl -ss")
+ assert re.search(r"all sctp 2001:db8::1\[.*2001:db8::3\[1234\]", states)
+ assert re.search(r"all sctp 2001:db8::10\[.*2001:db8::3\[1234\]", states)

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