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Delete the IPv6 link-local Neighbor when ipv6 link-local mode is disa…
…bled (sonic-net#1897) * IPv6 link-local Neighbor deletion when ipv6 link-local mode is disabled. Signed-off-by: Akhilesh Samineni <akhilesh.samineni@broadcom.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| import time | ||
| import json | ||
| import pytest | ||
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||
| from swsscommon import swsscommon | ||
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| class TestIPv6LinkLocal(object): | ||
| def setup_db(self, dvs): | ||
| self.pdb = dvs.get_app_db() | ||
| self.adb = dvs.get_asic_db() | ||
| self.cdb = dvs.get_config_db() | ||
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| def set_admin_status(self, interface, status): | ||
| self.cdb.update_entry("PORT", interface, {"admin_status": status}) | ||
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| def add_ip_address(self, interface, ip): | ||
| self.cdb.create_entry("INTERFACE", interface + "|" + ip, {"NULL": "NULL"}) | ||
| time.sleep(2) | ||
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| def remove_ip_address(self, interface, ip): | ||
| self.cdb.delete_entry("INTERFACE", interface + "|" + ip) | ||
| time.sleep(2) | ||
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| def create_ipv6_link_local_intf(self, interface): | ||
| self.cdb.create_entry("INTERFACE", interface, {"ipv6_use_link_local_only": "enable"}) | ||
| time.sleep(2) | ||
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| def remove_ipv6_link_local_intf(self, interface): | ||
| self.cdb.delete_entry("INTERFACE", interface) | ||
| time.sleep(2) | ||
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| def test_NeighborAddRemoveIpv6LinkLocal(self, dvs, testlog): | ||
| self.setup_db(dvs) | ||
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| # create ipv6 link local intf | ||
| self.create_ipv6_link_local_intf("Ethernet0") | ||
| self.create_ipv6_link_local_intf("Ethernet4") | ||
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| # bring up interface | ||
| self.set_admin_status("Ethernet0", "up") | ||
| self.set_admin_status("Ethernet4", "up") | ||
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| # set ip address | ||
| self.add_ip_address("Ethernet0", "2000::1/64") | ||
| self.add_ip_address("Ethernet4", "2001::1/64") | ||
| dvs.runcmd("sysctl -w net.ipv6.conf.all.forwarding=1") | ||
| dvs.runcmd("sysctl -w net.ipv6.conf.default.forwarding=1") | ||
|
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||
| # set ip address and default route | ||
| dvs.servers[0].runcmd("ip -6 address add 2000::2/64 dev eth0") | ||
| dvs.servers[0].runcmd("ip -6 route add default via 2000::1") | ||
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| dvs.servers[1].runcmd("ip -6 address add 2001::2/64 dev eth0") | ||
| dvs.servers[1].runcmd("ip -6 route add default via 2001::1") | ||
| time.sleep(2) | ||
|
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||
| # get neighbor entry | ||
| dvs.servers[0].runcmd("ping -6 -c 1 2001::2") | ||
| time.sleep(2) | ||
|
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| # Neigh entries should contain Ipv6-link-local neighbors, should be 4 | ||
| neigh_entries = self.pdb.get_keys("NEIGH_TABLE") | ||
| assert (len(neigh_entries) == 4) | ||
|
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||
| found_entry = False | ||
| for key in neigh_entries: | ||
| if (key.find("Ethernet4:2001::2") or key.find("Ethernet0:2000::2")): | ||
| found_entry = True | ||
|
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| assert found_entry | ||
|
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| # remove ip address | ||
| self.remove_ip_address("Ethernet0", "2000::1/64") | ||
| self.remove_ip_address("Ethernet4", "2001::1/64") | ||
|
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||
| # remove ipv6 link local intf | ||
| self.remove_ipv6_link_local_intf("Ethernet0") | ||
| self.remove_ipv6_link_local_intf("Ethernet4") | ||
|
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| # Neigh entries should not contain Ipv6-link-local neighbors, should be 2 | ||
| neigh_after_entries = self.pdb.get_keys("NEIGH_TABLE") | ||
| print(neigh_after_entries) | ||
| assert (len(neigh_after_entries) == 2) | ||
|
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| found_existing_entry = False | ||
| for key in neigh_entries: | ||
| if (key.find("Ethernet4:2001::2") or key.find("Ethernet0:2000::2")): | ||
| found_existing_entry = True | ||
|
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| assert found_existing_entry | ||
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| self.set_admin_status("Ethernet0", "down") | ||
| self.set_admin_status("Ethernet4", "down") | ||
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| # remove ip address and default route | ||
| dvs.servers[0].runcmd("ip -6 route del default dev eth0") | ||
| dvs.servers[0].runcmd("ip -6 address del 2000::2/64 dev eth0") | ||
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| dvs.servers[1].runcmd("ip -6 route del default dev eth0") | ||
| dvs.servers[1].runcmd("ip -6 address del 2001::2/64 dev eth0") | ||
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||
| dvs.runcmd("sysctl -w net.ipv6.conf.all.forwarding=0") | ||
| dvs.runcmd("sysctl -w net.ipv6.conf.default.forwarding=0") | ||
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| neigh_entries = self.pdb.get_keys("NEIGH_TABLE") | ||
| assert (len(neigh_entries) == 0) | ||
|
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| # Add Dummy always-pass test at end as workaroud | ||
| # for issue when Flaky fail on final test it invokes module tear-down before retrying | ||
| def test_nonflaky_dummy(): | ||
| pass | ||
|
|