vpp/test/test_offload.py
Mohsin Kazmi 6809538e64 vlib: refactor checksum offload support
Type: refactor

This patch refactors the offload flags in vlib_buffer_t.
There are two main reasons behind this refactoring.
First, offload flags are insufficient to represent outer
and inner headers offloads. Second, room for these flags
in first cacheline of vlib_buffer_t is also limited.

This patch introduces a generic offload flag in first
cacheline. And detailed offload flags in 2nd cacheline
of the structure for performance optimization.

Change-Id: Icc363a142fb9208ec7113ab5bbfc8230181f6004
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2021-02-15 20:32:56 +00:00

76 lines
2.5 KiB
Python

#!/usr/bin/env python3
import unittest
from framework import VppTestCase, VppTestRunner, running_gcov_tests
from vpp_ip_route import VppIpTable, VppIpRoute, VppRoutePath
class TestOffload(VppTestCase):
""" Offload Unit Test Cases """
@classmethod
def setUpClass(cls):
super(TestOffload, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TestOffload, cls).tearDownClass()
def setUp(self):
super(TestOffload, self).setUp()
def tearDown(self):
super(TestOffload, self).tearDown()
def test_offload_unittest(self):
""" Checksum Offload Test """
cmds = ["loop create",
"set int ip address loop0 11.22.33.1/24",
"set int state loop0 up",
"loop create",
"set int ip address loop1 11.22.34.1/24",
"set int state loop1 up",
"set ip neighbor loop1 11.22.34.44 03:00:11:22:34:44",
"packet-generator new {\n"
" name s0\n"
" limit 100\n"
" size 128-128\n"
" interface loop0\n"
" tx-interface loop1\n"
" node loop1-output\n"
" buffer-flags ip4 offload\n"
" buffer-offload-flags offload-ip-cksum offload-udp-cksum\n"
" data {\n"
" IP4: 1.2.3 -> dead.0000.0001\n"
" UDP: 11.22.33.44 -> 11.22.34.44\n"
" ttl 2 checksum 13\n"
" UDP: 1234 -> 2345\n"
" checksum 11\n"
" incrementing 114\n"
" }\n"
"}",
"trace add pg-input 1",
"pa en",
"show error"]
for cmd in cmds:
r = self.vapi.cli_return_response(cmd)
if r.retval != 0:
if hasattr(r, 'reply'):
self.logger.info(cmd + " FAIL reply " + r.reply)
else:
self.logger.info(cmd + " FAIL retval " + str(r.retval))
r = self.vapi.cli_return_response("show trace")
self.assertTrue(r.retval == 0)
self.assertTrue(hasattr(r, 'reply'))
rv = r.reply
look_here = rv.find('ethernet-input')
self.assertFalse(look_here == -1)
bad_checksum_index = rv[look_here:].find('should be')
self.assertTrue(bad_checksum_index == -1)
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)