blob: fc4e1a68ec281b63bcc920cf5ab891c439c5d5ad [file] [log] [blame]
# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import logging
import time
from autotest_lib.client.common_lib import error
from autotest_lib.client.cros import dhcp_handling_rule
from autotest_lib.client.cros import dhcp_packet
from autotest_lib.client.cros import dhcp_test_base
# dhcpcd has a 20 second minimal accepted lease time
LEASE_TIME_SECONDS = 20
# dhcpcd should request a renewal after this many seconds.
LEASE_T1_TIME = 10
# dhcpcd will broadcast a REQUEST after this many seconds.
LEASE_T2_TIME = 15
# We had better have lost the lease 25 seconds after we gained it.
DHCP_RENEWAL_TIMEOUT_SECONDS = 25
# We'll fill in the subnet and give this address to the client.
INTENDED_IP_SUFFIX = "0.0.0.101"
class network_DhcpRenew(dhcp_test_base.DhcpTestBase):
def test_body(self):
subnet_mask = self.ethernet_pair.interface_subnet_mask
intended_ip = dhcp_test_base.DhcpTestBase.rewrite_ip_suffix(
subnet_mask,
self.server_ip,
INTENDED_IP_SUFFIX)
# Two real name servers, and a bogus one to be unpredictable.
dns_servers = ["8.8.8.8", "8.8.4.4", "192.168.87.88"]
domain_name = "corp.google.com"
dns_search_list = [
"corgie.google.com",
"lies.google.com",
"that.is.a.tasty.burger.google.com",
]
# This is the pool of information the server will give out to the client
# upon request.
dhcp_options = {
dhcp_packet.OPTION_SERVER_ID : self.server_ip,
dhcp_packet.OPTION_SUBNET_MASK : subnet_mask,
dhcp_packet.OPTION_IP_LEASE_TIME : LEASE_TIME_SECONDS,
dhcp_packet.OPTION_REQUESTED_IP : intended_ip,
dhcp_packet.OPTION_DNS_SERVERS : dns_servers,
dhcp_packet.OPTION_DOMAIN_NAME : domain_name,
dhcp_packet.OPTION_DNS_DOMAIN_SEARCH_LIST : dns_search_list,
dhcp_packet.OPTION_RENEWAL_T1_TIME_VALUE : LEASE_T1_TIME,
dhcp_packet.OPTION_REBINDING_T2_TIME_VALUE : LEASE_T2_TIME,
}
self.negotiate_and_check_lease(dhcp_options)
# This is very imprecise, since there is some built in delay in
# negotiate_new_lease() for settings propagations, but we're not
# interested in microsecond timings anyway.
lease_start_time = time.time()
t1_deadline = lease_start_time + LEASE_T1_TIME
t2_deadline = lease_start_time + LEASE_T2_TIME
# Ignore the T1 deadline packet.
t1_handler = dhcp_handling_rule.DhcpHandlingRule_RespondToRequest(
intended_ip,
self.server_ip,
dhcp_options,
should_respond=False)
t1_handler.target_time_seconds = t1_deadline
t1_handler.allowable_time_delta_seconds = 1.0
t2_handler = dhcp_handling_rule.DhcpHandlingRule_RespondToPostT2Request(
intended_ip,
self.server_ip,
dhcp_options,
should_respond=False)
t2_handler.target_time_seconds = t2_deadline
t2_handler.allowable_time_delta_seconds = 1.0
discovery_handler = \
dhcp_handling_rule.DhcpHandlingRule_RespondToDiscovery(
intended_ip,
self.server_ip,
dhcp_options,
should_respond=False)
rules = [t1_handler, t2_handler, discovery_handler]
rules[-1].is_final_handler = True
self.server.start_test(rules, DHCP_RENEWAL_TIMEOUT_SECONDS)
self.server.wait_for_test_to_finish()
if not self.server.last_test_passed:
raise error.TestFail("Test server didn't get all the messages it "
"was told to expect for renewal.")
# TODO(wiley) Check that we don't have an IP (crosbug.com/34578)