diff options
Diffstat (limited to 'test/test_ip6.py')
| -rw-r--r-- | test/test_ip6.py | 131 |
1 files changed, 53 insertions, 78 deletions
diff --git a/test/test_ip6.py b/test/test_ip6.py index ea669b708a6..e188970ac10 100644 --- a/test/test_ip6.py +++ b/test/test_ip6.py @@ -5,6 +5,7 @@ import socket from framework import VppTestCase, VppTestRunner from vpp_sub_interface import VppSubInterface, VppDot1QSubint +from vpp_pg_interface import is_ipv6_misc from scapy.packet import Raw from scapy.layers.l2 import Ether, Dot1Q @@ -12,10 +13,9 @@ from scapy.layers.inet6 import IPv6, UDP, ICMPv6ND_NS, ICMPv6ND_RS, \ ICMPv6ND_RA, ICMPv6NDOptSrcLLAddr, getmacbyip6, ICMPv6MRD_Solicitation from util import ppp from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \ - in6_mactoifaceid + in6_mactoifaceid, in6_ismaddr from scapy.utils import inet_pton, inet_ntop - def mk_ll_addr(mac): euid = in6_mactoifaceid(mac) addr = "fe80::" + euid @@ -287,28 +287,39 @@ class TestIPv6(VppTestCase): self.send_and_assert_no_replies(self.pg0, pkts, "No response to NS for unknown target") - def send_and_expect_ra(self, intf, pkts, remark, src_ip=None): - if not src_ip: - src_ip = intf.remote_ip6 - intf.add_stream(pkts) - self.pg0.add_stream(pkts) - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - rx = intf.get_capture(1) + def validate_ra(self, intf, rx, dst_ip=None): + if not dst_ip: + dst_ip = intf.remote_ip6 - self.assertEqual(len(rx), 1) - rx = rx[0] + # unicasted packets must come to the unicast mac + self.assertEqual(rx[Ether].dst, intf.remote_mac) + + # and from the router's MAC + self.assertEqual(rx[Ether].src, intf.local_mac) # the rx'd RA should be addressed to the sender's source self.assertTrue(rx.haslayer(ICMPv6ND_RA)) self.assertEqual(in6_ptop(rx[IPv6].dst), - in6_ptop(src_ip)) + in6_ptop(dst_ip)) # and come from the router's link local self.assertTrue(in6_islladdr(rx[IPv6].src)) self.assertEqual(in6_ptop(rx[IPv6].src), in6_ptop(mk_ll_addr(intf.local_mac))) + + def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None, + filter_out_fn=is_ipv6_misc): + intf.add_stream(pkts) + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = intf.get_capture(1, filter_out_fn=filter_out_fn) + + self.assertEqual(len(rx), 1) + rx = rx[0] + self.validate_ra(intf, rx, dst_ip) + def test_rs(self): """ IPv6 Router Solicitation Exceptions @@ -319,6 +330,9 @@ class TestIPv6(VppTestCase): # Before we begin change the IPv6 RA responses to use the unicast # address - that way we will not confuse them with the periodic # RAs which go to the mcast address + # Sit and wait for the first periodic RA. + # + # TODO # self.pg0.ip6_ra_config(send_unicast=1) @@ -365,8 +379,23 @@ class TestIPv6(VppTestCase): IPv6(dst=self.pg0.local_ip6, src=ll) / ICMPv6ND_RS()) pkts = [p] - self.send_and_expect_ra( - self.pg0, pkts, "RS sourced from link-local", src_ip=ll) + self.send_and_expect_ra(self.pg0, pkts, + "RS sourced from link-local", + dst_ip=ll) + + # + # Send the RS multicast + # + self.pg0.ip6_ra_config(send_unicast=1) + dmac = in6_getnsmac(inet_pton(socket.AF_INET6, "ff02::2")) + ll = mk_ll_addr(self.pg0.remote_mac) + p = (Ether(dst=dmac, src=self.pg0.remote_mac) / + IPv6(dst="ff02::2", src=ll) / + ICMPv6ND_RS()) + pkts = [p] + self.send_and_expect_ra(self.pg0, pkts, + "RS sourced from link-local", + dst_ip=ll) # # Source from the unspecified address ::. This happens when the RS @@ -376,74 +405,20 @@ class TestIPv6(VppTestCase): # If we happen to pick up the periodic RA at this point then so be it, # it's not an error. # - self.pg0.ip6_ra_config(send_unicast=1) - p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / - IPv6(dst=self.pg0.local_ip6, src="::") / + self.pg0.ip6_ra_config(send_unicast=1, suppress=1) + p = (Ether(dst=dmac, src=self.pg0.remote_mac) / + IPv6(dst="ff02::2", src="::") / ICMPv6ND_RS()) pkts = [p] - - self.pg0.add_stream(pkts) - self.pg0.add_stream(pkts) - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - capture = self.pg0.get_capture(1, filter_out_fn=None) - found = 0 - for rx in capture: - if (rx.haslayer(ICMPv6ND_RA)): - # and come from the router's link local - self.assertTrue(in6_islladdr(rx[IPv6].src)) - self.assertEqual(in6_ptop(rx[IPv6].src), - in6_ptop(mk_ll_addr(self.pg0.local_mac))) - # sent to the all hosts mcast - self.assertEqual(in6_ptop(rx[IPv6].dst), "ff02::1") - - found = 1 - self.assertTrue(found) - - @unittest.skip("Unsupported") - def test_mrs(self): - """ IPv6 Multicast Router Solicitation Exceptions - - Test scenario: - """ - - # - # An RS from a link source address - # - expect an RA in return - # - nsma = in6_getnsma(inet_pton(socket.AF_INET6, self.pg0.local_ip6)) - d = inet_ntop(socket.AF_INET6, nsma) - - p = (Ether(dst=getmacbyip6("ff02::2")) / - IPv6(dst=d, src=self.pg0.remote_ip6) / - ICMPv6MRD_Solicitation()) - pkts = [p] - - self.pg0.add_stream(pkts) - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - self.pg0.assert_nothing_captured( - remark="No response to NS source by address not on sub-net") + self.send_and_expect_ra(self.pg0, pkts, + "RS sourced from unspecified", + dst_ip="ff02::1", + filter_out_fn=None) # - # An RS from a non link source address + # Reset the periodic advertisements back to default values # - nsma = in6_getnsma(inet_pton(socket.AF_INET6, self.pg0.local_ip6)) - d = inet_ntop(socket.AF_INET6, nsma) - - p = (Ether(dst=getmacbyip6("ff02::2")) / - IPv6(dst=d, src="2002::2") / - ICMPv6MRD_Solicitation()) - pkts = [p] - - self.send_and_assert_no_replies(self.pg0, pkts, - "RA rate limited") - self.pg0.add_stream(pkts) - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - self.pg0.assert_nothing_captured( - remark="No response to NS source by address not on sub-net") - + self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0) if __name__ == '__main__': unittest.main(testRunner=VppTestRunner) |