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Python
Executable File

#!/usr/bin/env python3
"""
Custom MAC address on interface
Verify support for setting and removing a custom MAC address on interfaces.
Both static MAC address and derived from the chassis MAC with, or without,
an offset applied.
"""
import infamy
import infamy.iface as iface
from infamy.util import until
def calc_mac(base_mac, mac_offset):
"""Add mac_offset to base_mac and return result."""
base = [int(x, 16) for x in base_mac.split(':')]
offset = [int(x, 16) for x in mac_offset.split(':')]
result = [0] * 6
carry = 0
for i in range(5, -1, -1):
total = base[i] + offset[i] + carry
result[i] = total & 0xFF
carry = 1 if total > 0xFF else 0
return ':'.join(f'{x:02x}' for x in result)
def reset_mac(tgt, port):
"""Reset DUT interface MAC address to default."""
node = "infix-interfaces:custom-phys-address"
xpath = iface.get_xpath(port, node)
tgt.delete_xpath(xpath)
with infamy.Test() as test:
with test.step("Set up topology and attach to target DUT"):
env = infamy.Env()
target = env.attach("target", "mgmt")
_, tport = env.ltop.xlate("target", "data")
pmac = iface.get_phys_address(target, tport)
data = target.get_data("/ietf-hardware:hardware/component[name='mainboard']")
components = data.get("hardware", {}).get("component", {})
cmac = components["mainboard"].get("phys-address", "") \
if "mainboard" in components else ""
STATIC = "02:01:00:c0:ff:ee"
OFFSET = "00:00:00:00:ff:aa"
print(f"Chassis MAC address target: {cmac}")
print(f"Default MAC address of {tport} : {pmac}")
with test.step("Set target:data static MAC address '02:01:00:c0:ff:ee'"):
config = {
"interfaces": {
"interface": [{
"name": f"{tport}",
"custom-phys-address": {
"static": f"{STATIC}"
}
}]
}
}
target.put_config_dicts({"ietf-interfaces": config})
with test.step("Verify target:data has MAC address '02:01:00:c0:ff:ee'"):
mac = iface.get_phys_address(target, tport)
print(f"Current MAC: {mac}, should be: {STATIC}")
assert mac == STATIC
with test.step("Reset target:data MAC address to default"):
reset_mac(target, tport)
with test.step("Verify target:data MAC address is reset to default"):
until(lambda: iface.get_phys_address(target, tport) == pmac)
with test.step("Set target:data to chassis MAC"):
config = {
"interfaces": {
"interface": [{
"name": f"{tport}",
"custom-phys-address": {
"chassis": {}
}
}]
}
}
target.put_config_dicts({"ietf-interfaces": config})
with test.step("Verify target:data has chassis MAC"):
until(lambda: iface.get_phys_address(target, tport) == cmac)
with test.step("Set target:data to chassis MAC + offset"):
print(f"Setting chassis MAC {cmac} + offset {OFFSET}")
config = {
"interfaces": {
"interface": [{
"name": f"{tport}",
"custom-phys-address": {
"chassis": {
"offset": f"{OFFSET}"
}
}
}]
}
}
target.put_config_dicts({"ietf-interfaces": config})
with test.step("Verify target:data has chassis MAC + offset"):
BMAC = calc_mac(cmac, OFFSET)
until(lambda: iface.get_phys_address(target, tport) == BMAC)
with test.step("Reset target:data MAC address to default"):
reset_mac(target, tport)
with test.step("Verify target:data MAC address is reset to default"):
until(lambda: iface.get_phys_address(target, tport) == pmac)
test.succeed()