Learn IP6 link-local ND entries from NSs sourced from link-local address
Change-Id: I4c3ce4d58df7977490fc94991291422ea1e31ee3 Signed-off-by: Neale Ranns <nranns@cisco.com>
This commit is contained in:
Neale Ranns
committed by
Florin Coras
Florin Coras
parent
c06eeb0e3c
commit
2a3ea49d5c
106
test/test_ip6.py
106
test/test_ip6.py
@ -77,7 +77,6 @@ class TestIPv6ND(VppTestCase):
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def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
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filter_out_fn=is_ipv6_misc):
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intf.add_stream(pkts)
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self.pg0.add_stream(pkts)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
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@ -86,11 +85,25 @@ class TestIPv6ND(VppTestCase):
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rx = rx[0]
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self.validate_ra(intf, rx, dst_ip)
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def send_and_expect_na(self, intf, pkts, remark, dst_ip=None,
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tgt_ip=None,
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filter_out_fn=is_ipv6_misc):
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intf.add_stream(pkts)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
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self.assertEqual(len(rx), 1)
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rx = rx[0]
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self.validate_na(intf, rx, dst_ip, tgt_ip)
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def send_and_assert_no_replies(self, intf, pkts, remark):
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intf.add_stream(pkts)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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intf.assert_nothing_captured(remark=remark)
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for i in self.pg_interfaces:
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i.get_capture(0)
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i.assert_nothing_captured(remark=remark)
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class TestIPv6(TestIPv6ND):
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@ -376,6 +389,59 @@ class TestIPv6(TestIPv6ND):
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128,
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inet=AF_INET6))
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#
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# send an NS from a link local address to the interface's global
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# address
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#
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p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
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IPv6(dst=d, src=self.pg0._remote_hosts[2].ip6_ll) /
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ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
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ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
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self.send_and_expect_na(self.pg0, p,
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"NS from link-local",
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dst_ip=self.pg0._remote_hosts[2].ip6_ll,
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tgt_ip=self.pg0.local_ip6)
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#
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# we should have learned an ND entry for the peer's link-local
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# but not inserted a route to it in the FIB
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#
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self.assertTrue(find_nbr(self,
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self.pg0.sw_if_index,
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self.pg0._remote_hosts[2].ip6_ll,
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inet=AF_INET6))
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self.assertFalse(find_route(self,
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self.pg0._remote_hosts[2].ip6_ll,
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128,
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inet=AF_INET6))
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#
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# An NS to the router's own Link-local
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#
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p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
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IPv6(dst=d, src=self.pg0._remote_hosts[3].ip6_ll) /
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ICMPv6ND_NS(tgt=self.pg0.local_ip6_ll) /
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ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
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self.send_and_expect_na(self.pg0, p,
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"NS to/from link-local",
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dst_ip=self.pg0._remote_hosts[3].ip6_ll,
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tgt_ip=self.pg0.local_ip6_ll)
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#
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# we should have learned an ND entry for the peer's link-local
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# but not inserted a route to it in the FIB
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#
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self.assertTrue(find_nbr(self,
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self.pg0.sw_if_index,
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self.pg0._remote_hosts[3].ip6_ll,
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inet=AF_INET6))
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self.assertFalse(find_route(self,
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self.pg0._remote_hosts[3].ip6_ll,
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128,
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inet=AF_INET6))
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def validate_ra(self, intf, rx, dst_ip=None, mtu=9000, pi_opt=None):
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if not dst_ip:
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dst_ip = intf.remote_ip6
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@ -770,14 +836,10 @@ class IPv6NDProxyTest(TestIPv6ND):
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#
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# try that NS again. this time we expect an NA back
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#
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self.pg1.add_stream(ns_pg1)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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rx = self.pg1.get_capture(1)
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self.validate_na(self.pg1, rx[0],
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dst_ip=self.pg0._remote_hosts[2].ip6,
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tgt_ip=self.pg0.local_ip6)
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self.send_and_expect_na(self.pg1, ns_pg1,
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"NS to proxy entry",
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dst_ip=self.pg0._remote_hosts[2].ip6,
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tgt_ip=self.pg0.local_ip6)
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#
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# ... and that we have an entry in the ND cache
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@ -816,14 +878,10 @@ class IPv6NDProxyTest(TestIPv6ND):
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ICMPv6ND_NS(tgt=self.pg0._remote_hosts[2].ip6) /
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ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
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self.pg0.add_stream(ns_pg0)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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rx = self.pg0.get_capture(1)
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self.validate_na(self.pg0, rx[0],
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tgt_ip=self.pg0._remote_hosts[2].ip6,
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dst_ip=self.pg0.remote_ip6)
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self.send_and_expect_na(self.pg0, ns_pg0,
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"NS to proxy entry on main",
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tgt_ip=self.pg0._remote_hosts[2].ip6,
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dst_ip=self.pg0.remote_ip6)
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#
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# Setup and resolve proxy for another host on another interface
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@ -837,14 +895,10 @@ class IPv6NDProxyTest(TestIPv6ND):
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inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
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self.pg2.sw_if_index)
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self.pg2.add_stream(ns_pg2)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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rx = self.pg2.get_capture(1)
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self.validate_na(self.pg2, rx[0],
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dst_ip=self.pg0._remote_hosts[3].ip6,
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tgt_ip=self.pg0.local_ip6)
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self.send_and_expect_na(self.pg2, ns_pg2,
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"NS to proxy entry other interface",
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dst_ip=self.pg0._remote_hosts[3].ip6,
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tgt_ip=self.pg0.local_ip6)
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self.assertTrue(find_nbr(self,
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self.pg2.sw_if_index,
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