for i in self.pg_interfaces:
i.assert_nothing_captured(remark=remark)
- def validate_option_82(self, pkt, intf, ip_addr):
+ def validate_relay_options(self, pkt, intf, ip_addr, fib_id, oui):
dhcp = pkt[DHCP]
found = 0
data = []
# There are two sb-options present - each of length 6.
#
data = i[1]
- self.assertEqual(len(data), 12)
+ if oui != 0:
+ self.assertEqual(len(data), 24)
+ else:
+ self.assertEqual(len(data), 12)
#
# First sub-option is ID 1, len 4, then encoded
self.assertEqual(data[10], claddr[2])
self.assertEqual(data[11], claddr[3])
+ if oui != 0:
+ # sub-option 151 encodes the 3 byte oui
+ # and the 4 byte fib_id
+ self.assertEqual(ord(data[12]), 151)
+ self.assertEqual(ord(data[13]), 8)
+ self.assertEqual(ord(data[14]), 1)
+ self.assertEqual(ord(data[15]), 0)
+ self.assertEqual(ord(data[16]), 0)
+ self.assertEqual(ord(data[17]), oui)
+ self.assertEqual(ord(data[18]), 0)
+ self.assertEqual(ord(data[19]), 0)
+ self.assertEqual(ord(data[20]), 0)
+ self.assertEqual(ord(data[21]), fib_id)
+
+ # VSS control sub-option
+ self.assertEqual(ord(data[22]), 152)
+ self.assertEqual(ord(data[23]), 0)
+
found = 1
self.assertTrue(found)
return data
- def verify_dhcp_offer(self, pkt, intf, check_option_82=True):
+ def verify_dhcp_offer(self, pkt, intf):
ether = pkt[Ether]
self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
self.assertEqual(ether.src, intf.local_mac)
is_offer = True
self.assertTrue(is_offer)
- if check_option_82:
- data = self.validate_option_82(pkt, intf, intf.local_ip4)
+ data = self.validate_relay_options(pkt, intf, intf.local_ip4, 0, 0)
- def verify_dhcp_discover(self, pkt, intf, src_intf=None,
- option_82_present=True):
+ def verify_dhcp_discover(self, pkt, intf, src_intf=None, fib_id=0, oui=0):
ether = pkt[Ether]
self.assertEqual(ether.dst, intf.remote_mac)
self.assertEqual(ether.src, intf.local_mac)
is_discover = True
self.assertTrue(is_discover)
- if option_82_present:
- data = self.validate_option_82(pkt, src_intf, src_intf.local_ip4)
- return data
- else:
- for i in dhcp.options:
- if type(i) is tuple:
- self.assertNotEqual(i[0], "relay_agent_Information")
+ data = self.validate_relay_options(pkt, src_intf,
+ src_intf.local_ip4,
+ fib_id, oui)
+ return data
def verify_dhcp6_solicit(self, pkt, intf,
peer_ip, peer_mac,
self.assertEqual(cll.lltype, 1)
self.assertEqual(cll.clladdr, peer_mac)
- vss = pkt[DHCP6OptVSS]
- self.assertEqual(vss.optlen, 8)
- self.assertEqual(vss.type, 1)
- # the OUI and FIB-id are really 3 and 4 bytes resp.
- # but the tested range is small
- self.assertEqual(ord(vss.data[0]), 0)
- self.assertEqual(ord(vss.data[1]), 0)
- self.assertEqual(ord(vss.data[2]), oui)
- self.assertEqual(ord(vss.data[3]), 0)
- self.assertEqual(ord(vss.data[4]), 0)
- self.assertEqual(ord(vss.data[5]), 0)
- self.assertEqual(ord(vss.data[6]), fib_id)
+ if fib_id != 0:
+ vss = pkt[DHCP6OptVSS]
+ self.assertEqual(vss.optlen, 8)
+ self.assertEqual(vss.type, 1)
+ # the OUI and FIB-id are really 3 and 4 bytes resp.
+ # but the tested range is small
+ self.assertEqual(ord(vss.data[0]), 0)
+ self.assertEqual(ord(vss.data[1]), 0)
+ self.assertEqual(ord(vss.data[2]), oui)
+ self.assertEqual(ord(vss.data[3]), 0)
+ self.assertEqual(ord(vss.data[4]), 0)
+ self.assertEqual(ord(vss.data[5]), 0)
+ self.assertEqual(ord(vss.data[6]), fib_id)
# the relay message should be an encoded Solicit
msg = pkt[DHCP6OptRelayMsg]
rx_table_id=0)
#
- # Now a DHCP request on pg2, which is in the same VRF
- # as the DHCP config, will result in a relayed DHCP
- # message to the [fake] server
- #
- self.pg2.add_stream(pkts_disc_vrf0)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- rx = self.pg0.get_capture(1)
- rx = rx[0]
-
- #
- # Rx'd packet should be to the server address and from the configured
- # source address
- # UDP source ports are unchanged
- # we've no option 82 config so that should be absent
+ # Discover packets from the client are dropped because there is no
+ # IP address configured on the client facing interface
#
- self.verify_dhcp_discover(rx, self.pg0, option_82_present=False)
+ self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
+ "Discover DHCP no relay address")
#
# Inject a response from the server
- # VPP will only relay the offer if option 82 is present.
- # so this one is dropped
+ # dropped, because there is no IP addrees on the
+ # clinet interfce to fill in the option.
#
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
DHCP(options=[('message-type', 'offer'), ('end')]))
pkts = [p]
- self.send_and_assert_no_replies(self.pg0, pkts,
- "DHCP offer no option 82")
-
- #
- # Configure sending option 82 in relayed messages
- #
- self.vapi.dhcp_proxy_config(server_addr,
- src_addr,
- rx_table_id=0,
- insert_circuit_id=1)
-
- #
- # Send a request:
- # again dropped, but ths time because there is no IP addrees on the
- # clinet interfce to fill in the option.
- #
- self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
- "DHCP no relay address")
+ self.send_and_assert_no_replies(self.pg2, pkts,
+ "Offer DHCP no relay address")
#
# configure an IP address on the client facing interface
('relay_agent_Information', bad_ip),
('end')]))
pkts = [p]
-
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- rx = self.pg2.get_capture(1)
- rx = rx[0]
-
- self.verify_dhcp_offer(rx, self.pg2, check_option_82=False)
- self.pg0.assert_nothing_captured(remark="")
+ self.send_and_assert_no_replies(self.pg0, pkts,
+ "DHCP offer option 82 bad address")
# 2. Not a sw_if_index VPP knows
bad_if_index = option_82[0:2] + chr(33) + option_82[3:]
self.vapi.dhcp_proxy_config(server_addr,
src_addr,
rx_table_id=0,
- is_add=0,
- insert_circuit_id=1)
+ is_add=0)
self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
"DHCP config removed VRF 0")
self.vapi.dhcp_proxy_config(server_addr,
src_addr,
rx_table_id=1,
- server_table_id=1,
- insert_circuit_id=1)
+ server_table_id=1)
#
# Confim DHCP requests ok in VRF 1.
rx = rx[0]
self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3)
+ #
+ # Add VSS config
+ # table=1, fib=id=1, oui=4
+ self.vapi.dhcp_proxy_set_vss(1, 1, 4)
+
+ self.pg3.add_stream(pkts_disc_vrf1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg1.get_capture(1)
+ rx = rx[0]
+ self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3,
+ fib_id=1, oui=4)
+
+ #
+ # Remove the VSS config
+ # relayed DHCP has default vlaues in the option.
+ #
+ self.vapi.dhcp_proxy_set_vss(1, 1, 4, is_add=0)
+
+ self.pg3.add_stream(pkts_disc_vrf1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg1.get_capture(1)
+ rx = rx[0]
+ self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3)
+
#
# remove DHCP config to cleanup
#
self.vapi.dhcp_proxy_config(server_addr,
src_addr,
rx_table_id=1,
- server_table_id=1,
- insert_circuit_id=1,
+ server_table_id=11,
is_add=0)
self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
src_addr_vrf0,
rx_table_id=0,
server_table_id=0,
- insert_circuit_id=1,
is_ipv6=1)
self.send_and_assert_no_replies(self.pg2, pkts_solicit_vrf0,
src_addr_vrf1,
rx_table_id=1,
server_table_id=1,
- insert_circuit_id=1,
is_ipv6=1)
self.pg3.config_ip6()
src_addr_vrf1,
rx_table_id=1,
server_table_id=1,
- insert_circuit_id=1,
is_ipv6=1,
is_add=0)
self.vapi.dhcp_proxy_config(server_addr_vrf1,
src_addr_vrf1,
rx_table_id=0,
server_table_id=0,
- insert_circuit_id=1,
is_ipv6=1,
is_add=0)
Code Review / vpp.git / blobdiff