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test_xdpdump.py
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#!/usr/bin/python3
import os
import unittest
import shutil
from config import *
import utils
import fixtures
import re
import time
from logger_module import *
class XDPDUMP_CASES(unittest.TestCase):
@classmethod
def setUpClass(cls):
os.chdir(XDPDUMP_DIRECTORY)
fixtures.setup()
fixtures.pre_check()
@classmethod
def tearDownClass(cls):
fixtures.clear_env()
os.chdir(os.path.dirname(__file__))
def setUp(self):
logger.info(f"{TITLE_WRAPPER} START TEST [{self.id()}] {TITLE_WRAPPER}")
def tearDown(self):
DEFAULT_TIER = {
"tier1": {
"verbose": [""]
},
"tier2": {
"verbose": ["", "-v", "-vv"]
}
}
try:
os.chdir(XDP_LOADER_DIRECTORY)
utils.run_cmd_local(f"{XDP_LOADER} unload {HOST_IFNAME} -a")
except:
pass
finally:
os.chdir(XDPDUMP_DIRECTORY)
logger.info(f"{TITLE_WRAPPER} END TEST [{self.id()}] {TITLE_WRAPPER}")
def load_prog(self, prog_name, load_mode):
os.chdir(XDP_LOADER_DIRECTORY)
if type(prog_name) == str:
utils.run_cmd_local(f"{XDP_LOADER} load -m {load_mode} {HOST_IFNAME} {TEST_PROG_PATH}/{prog_name}.o")
elif type(prog_name) == list:
prog_list = " ".join([f"{TEST_PROG_PATH}/{p}.o" for p in prog_name])
utils.run_cmd_local(f"{XDP_LOADER} load -m {load_mode} {HOST_IFNAME} {prog_list}")
os.chdir(XDPDUMP_DIRECTORY)
def test_tool(self, prog_name, load_mode):
os.chdir(f"{PROJECT_PATH}")
# Here we load the programs without the xdp-tools loader to make sure
# they are not loaded as a multi-program.
utils.run_cmd_local(f"./test-tool load -m {load_mode} {HOST_IFNAME} {TEST_PROG_PATH}/{prog_name}")
os.chdir(XDPDUMP_DIRECTORY)
def unload_prog(self, wait_time=0):
os.chdir(XDP_LOADER_DIRECTORY)
utils.run_cmd_local(f"{XDP_LOADER} unload {HOST_IFNAME} -a")
os.chdir(XDPDUMP_DIRECTORY)
time.sleep(wait_time)
def get_prog_id(self, prog_name, position=0):
err, output, rc = utils.run_cmd_local(f"{XDPDUMP} -D")
id_reg = re.compile(f"{prog_name}[\s+|a-z]+\d+")
prog_id = re.findall(id_reg, output)[position]
prog_id = prog_id.replace(prog_name, "").replace("native", "").replace("skb", "").replace(" ", "")
return prog_id
def get_ip_link_info(self):
err, output, rc = utils.run_cmd_local(f"ip link show {HOST_IFNAME}")
return output
def xdpdump_case1_list_interface(self):
# TODO: 1. add checkding with prog loaded
no_prog_check = f"{HOST_IFNAME}\s*<No XDP program loaded!>"
if utils.get_multiprog_supported():
prog_check = f"{HOST_IFNAME}\s*xdp_dispatcher[\s\S]*xdp_drop"
else:
prog_check = f"{HOST_IFNAME}\s*xdp_drop"
for verbose in DEFAULT_TIER[TIER]['verbose']:
for list_cmd in ["-D", "--list-interfaces"]:
err, output, rc = utils.run_cmd_local(f"{XDPDUMP} {list_cmd} {verbose}", expect_err=True)
self.assertEqual(rc, 1)
self.assertRegex(output, no_prog_check)
for load_mode in ["skb", "native"]:
self.load_prog("xdp_drop", load_mode)
err, output, rc = utils.run_cmd_local(f"{XDPDUMP} {list_cmd} {verbose}", expect_err=True)
self.assertRegex(output, prog_check)
self.unload_prog()
def xdpdump_case2_rx_capture(self):
DEFAULT_TIER["tier1"]["prog"] = ["xdp_drop"]
DEFAULT_TIER["tier2"]["prog"] = ["xdp_drop", "xdp_pass"]
for verbose in DEFAULT_TIER[TIER]['verbose']:
for mode in TEST_MODE:
for prog in DEFAULT_TIER[TIER]['prog']:
self.load_prog(prog, mode)
for proto in ["ipv4", "ipv6"]:
for point in ["entry", "exit", "entry,exit"]:
dump_proc, logfile, errfile = utils.run_cmd_local_background(f"timeout 10 {XDPDUMP} -i {HOST_IFNAME} --rx-capture {point} {verbose}", wait_time=0.5)
utils.ping_from_remote(proto, 10)
output, err = utils.kill_background_and_get(dump_proc, logfile, errfile)
self.assertIn(prog, output)
if "entry" in point:
self.assertIn(f"@entry", output)
if "exit" in point:
self.assertIn(f"@exit", output)
self.unload_prog()
def xdpdump_case3_load_default_xdp(self):
for verbose in DEFAULT_TIER[TIER]['verbose']:
for default_prog in ["", "--load-xdp-program"]:
if default_prog != "":
for mode in TEST_MODE:
for proto in ["ipv4", "ipv6"]:
dump_proc, logfile, errfile = utils.run_cmd_local_background(f"timeout 10 {XDPDUMP} -i {HOST_IFNAME} {default_prog} --load-xdp-mode {mode} {verbose}", wait_time=1)
utils.ping_from_remote(proto, 10)
output, err = utils.kill_background_and_get(dump_proc, logfile, errfile)
self.assertIn("xdpdump", output)
self.assertIn("Will load a capture only XDP program", err)
else:
for proto in ["ipv4", "ipv6"]:
dump_proc, logfile, errfile = utils.run_cmd_local_background(f"timeout 10 {XDPDUMP} -i {HOST_IFNAME} {verbose}", wait_time=1)
utils.ping_from_remote(proto, 10)
output, err = utils.kill_background_and_get(dump_proc, logfile, errfile)
self.assertIn(HOST_IFNAME, output)
self.assertIn("capturing in legacy mode", err)
def xdpdump_case4_perf_wakeup(self):
perf_events = ["0", "1", "32", "128"]
ping_pkt = [10, 10000]
for verbose in DEFAULT_TIER[TIER]['verbose']:
for mode in TEST_MODE:
self.load_prog('test_long_func_name', mode)
for proto in ["ipv4", "ipv6"]:
for wakeup in perf_events:
for pkt_count in ping_pkt:
test_prog_name = "xdp_test_prog_with_a_long_name"
dump_proc, logfile, errfile = utils.run_cmd_local_background(f"timeout 15 {XDPDUMP} -i {HOST_IFNAME} -p {test_prog_name} --perf-wakeup {wakeup} {verbose}", wait_time=1.5)
utils.ping_from_remote(proto, pkt_count)
output, err = utils.kill_background_and_get(dump_proc, logfile, errfile)
self.assertIn(test_prog_name, output)
self.assertIn("@entry", output)
self.assertIn(f"id {pkt_count}", output)
self.unload_prog()
def xdpdump_case6_prog_name_single_prog(self):
# Case:
# bpftool load with test_long_func_name first prog
# 1. dump with no prog name
# 2. dump with exist but wrong prog name
# 3. dump with correct prog name
# 4. dump with non-exist prog name
# 5. dump xdp progs with duplicate functions
# 6. verify invalid program indexes
# wrong interface with right id
# wrong interface with wrong ID
# right interface with wrong ID
# remove pinned program
logging_check = {
"": "ERROR: Can't identify the full XDP main function!",
"-p xdp_test_prog_with_a_long_name": "",
"-p xdp_test_prog_with_a_long_name_too": "ERROR: Can't load eBPF object:",
"-p xdp_test_prog_with_a_long_non_existing_name": "ERROR: Can't find function 'xdp_test_prog_with_a_long_non_existing_name' on interface!",
"-p hallo@3e": "ERROR: Can't extract valid program id from \"hallo@3e\"!",
"-p hallo@128": "ERROR: Invalid program id supplied, \"hallo@128\"!"
}
for verbose in DEFAULT_TIER[TIER]['verbose']:
for mode in TEST_MODE:
self.test_tool("test_long_func_name.o", mode)
for prog_name, check in logging_check.items():
for proto in ["ipv4", "ipv6"]:
dump_proc, logfile, errfile = utils.run_cmd_local_background(f"timeout 10 {XDPDUMP} -i {HOST_IFNAME} {prog_name} {verbose}", wait_time=1)
utils.ping_from_remote(proto, 10)
output, err = utils.kill_background_and_get(dump_proc, logfile, errfile)
self.assertIn(check, err)
if check == "":
self.assertRegex(output, "xdp_test_prog_with_a_long_name\(\)@entry: packet size [0-9]+ bytes on if_index [0-9]+, rx queue [0-9]+, id [0-9]+")
self.unload_prog(wait_time=0.5)
def xdpdump_case7_prog_name_multi_prog(self):
# Case:
# load multiple 3 programw with xdp-loader
# get all 4 programs ID
# 1. dump should fail with "-p all" option
# 2. dump should fail with wrong ifname and correct ID
# 3. dump shoud fail with wrong ifname
# 4. dump should fail with a not specific prog name
# like: xdp_test_prog_with_a_long_name
# xdp_test_prog_with_a_long_name_too
# 5. same as case4, but with PROGID
for verbose in DEFAULT_TIER[TIER]['verbose']:
for mode in TEST_MODE:
self.load_prog(["test_long_func_name", "xdp_pass", "xdp_drop"], mode)
prog_id_1 = self.get_prog_id("xdp_dispatcher")
prog_id_2 = self.get_prog_id("xdp_test_prog_w")
prog_id_3 = self.get_prog_id('xdp_pass')
prog_id_4 = self.get_prog_id("xdp_drop")
logging_check = {
"-p all": [
f"ERROR: Can't identify the full XDP 'xdp_test_prog_w' function in program {prog_id_2}!",
f"xdp_test_prog_with_a_long_name@{prog_id_2}",
f"xdp_test_prog_with_a_long_name_too@{prog_id_2}",
"Command line to replace 'all':",
f"xdp_dispatcher@{prog_id_1},<function_name>@{prog_id_2},xdp_pass@{prog_id_3},xdp_drop@{prog_id_4}"
],
f"-p hallo@{prog_id_1}": [
f"ERROR: Can't find function 'hallo' in interface program {prog_id_1}!"
],
"-p hallo": [
"ERROR: Can't find function 'hallo' on interface"
],
"-p xdp_test_prog_w": [
"ERROR: Can't identify the full XDP 'xdp_test_prog_w' function!"
],
f"-p xdp_test_prog_w@{prog_id_2}": [
f"ERROR: Can't identify the full XDP 'xdp_test_prog_w' function in program {prog_id_2}!",
f"xdp_test_prog_with_a_long_name_too@{prog_id_2}"
]
}
for cmd, checks in logging_check.items():
dump_prog, logfile, errfile = utils.run_cmd_local_background(f"{XDPDUMP} -i {HOST_IFNAME} {cmd} {verbose}")
output, err = utils.kill_background_and_get(dump_prog, logfile, errfile)
for check in checks:
self.assertIn(check, err)
self.unload_prog(wait_time=0.5)
def xdpdump_case8_prog_name_dup_prog(self):
# load test_long_func_name.o two times and xdp_drop/xdp_pass
# get all for ID
# dump should fail with xdp_test_prog_with_a_long_name
# check output with ID
for verbose in DEFAULT_TIER[TIER]['verbose']:
for mode in TEST_MODE:
self.load_prog(["test_long_func_name", "test_long_func_name"], mode)
prog_id_1 = self.get_prog_id("xdp_dispatcher")
prog_id_2 = self.get_prog_id("xdp_test_prog_w")
prog_id_3 = self.get_prog_id("xdp_test_prog_w", 1)
logging_check = [
"ERROR: The function 'xdp_test_prog_with_a_long_name' exists in multiple programs!",
f"xdp_test_prog_with_a_long_name@{prog_id_2}",
f"xdp_test_prog_with_a_long_name@{prog_id_3}"
]
dump_prog, logfile, errfile = utils.run_cmd_local_background(f"{XDPDUMP} -i {HOST_IFNAME} -p xdp_test_prog_with_a_long_name {verbose}")
output, err = utils.kill_background_and_get(dump_prog, logfile, errfile)
for check in logging_check:
self.assertIn(check, err)
self.unload_prog(wait_time=0.5)
def xdpdump_case9_pkt_size(self):
# check pkt size by using ping (56, 512, 1500)
ping_pkt_size = [56, 512, 1500]
pass_regex = [
"xdp_test_prog_with_a_long_name\(\)@entry: packet size [0-9]+ bytes on if_index [0-9]+, rx queue [0-9]+, id 20000",
"xdp_test_prog_with_a_long_name\(\)@exit\[PASS\]: packet size [0-9]+ bytes on if_index [0-9]+, rx queue [0-9]+, id 20000"
]
for verbose in DEFAULT_TIER[TIER]['verbose']:
for mode in TEST_MODE:
self.load_prog("test_long_func_name", mode)
for proto in ["ipv4", "ipv6"]:
for pkt_size in ping_pkt_size:
dump_proc, logfile, errfile = utils.run_cmd_local_background(f"timeout 10 {XDPDUMP} -i {HOST_IFNAME} -p xdp_test_prog_with_a_long_name --rx-capture=entry,exit {verbose}", wait_time=5)
utils.ping_from_remote(proto, count=20000, pkt_size=pkt_size)
time.sleep(2)
output, err = utils.kill_background_and_get(dump_proc, logfile, errfile)
for check in pass_regex:
self.assertRegex(output, check)
self.unload_prog(wait_time=0.5)
def xdpdump_case10_snapshot_hex(self):
# Case:
# Check use -s and --snapshot-length
# Assert the "captured xx bytes" in output
captured_size = {
"16": "xdp_test_prog_with_a_long_name\(\)@entry: packet size [0-9]+ bytes, captured 16 bytes on if_index [0-9]+, rx queue [0-9]+, id [0-9]+",
"21": "xdp_test_prog_with_a_long_name\(\)@entry: packet size [0-9]+ bytes, captured 21 bytes on if_index [0-9]+, rx queue [0-9]+, id [0-9]+"
}
for verbose in DEFAULT_TIER[TIER]['verbose']:
for mode in TEST_MODE:
self.load_prog("test_long_func_name", mode)
for proto in ["ipv4", "ipv6"]:
for size, check in captured_size.items():
dump_proc, logfile, errfile = utils.run_cmd_local_background(f"timeout 10 {XDPDUMP} -i {HOST_IFNAME} -p xdp_test_prog_with_a_long_name -x --snapshot-length={size} {verbose}", wait_time=1)
utils.ping_from_remote(proto)
output, err = utils.kill_background_and_get(dump_proc, logfile, errfile)
self.assertRegex(output, check)
self.unload_prog()
def xdpdump_case11_promisc_selfload(self):
# case1: check promisc with pre-load prog
# case2: check promisc with self-load default prog
utils.run_cmd_local("dmesg -C")
for verbose in DEFAULT_TIER[TIER]['verbose']:
for proto in ['ipv4', 'ipv6']:
dump_proc, logfile, errfile = utils.run_cmd_local_background(f"timeout 10 {XDPDUMP} -i {HOST_IFNAME} -P {verbose}", wait_time=0.5)
utils.ping_from_remote(proto)
output, err = utils.kill_background_and_get(dump_proc, logfile, errfile)
self.assertRegex(output, f"packet size [0-9]+ bytes on if_name \"{HOST_IFNAME}\"")
err, output, rc = utils.run_cmd_local("dmesg")
self.assertIn(f"device {HOST_IFNAME} entered promiscuous mode", output)
self.assertIn(f"device {HOST_IFNAME} left promiscuous mode", output)
def xdpdump_case12_promisc_preload(self):
check_reg = "xdp_test_prog_with_a_long_name\(\)@entry: packet size [0-9]+ bytes, captured [0-9]+ bytes on if_index [0-9]+, rx queue [0-9]+, id [0-9]+"
for verbose in DEFAULT_TIER[TIER]['verbose']:
for mode in TEST_MODE:
self.load_prog("test_long_func_name", mode)
utils.run_cmd_local("dmesg -C")
for proto in ['ipv4', 'ipv6']:
dump_proc, logfile, errfile = utils.run_cmd_local_background(f"timeout 10 {XDPDUMP} -i {HOST_IFNAME} -p xdp_test_prog_with_a_long_name -x --promiscuous-mode {verbose}", wait_time=0.5)
utils.ping_from_remote(proto)
output, err = utils.kill_background_and_get(dump_proc, logfile, errfile)
self.assertRegex(output, check_reg)
err, output, rc = utils.run_cmd_local("dmesg")
self.assertIn(f"device {HOST_IFNAME} entered promiscuous mode", output)
self.assertIn(f"device {HOST_IFNAME} left promiscuous mode", output)
self.unload_prog(wait_time=0.5)
def xdpdump_case13_multi_prog(self):
entry_regex = "xdp_dispatcher\(\)@entry: packet size [0-9]+ bytes on if_index [0-9]+, rx queue [0-9]+, id [0-9]+[\s\S]*xdp_pass\(\)@entry: packet size [0-9]+ bytes on if_index [0-9]+, rx queue [0-9]+, id [0-9]+"
exit_regex = "xdp_pass\(\)@exit\[PASS\]: packet size [0-9]+ bytes on if_index [0-9]+, rx queue [0-9]+, id [0-9]+[\s\S]*xdp_dispatcher\(\)@exit\[PASS\]: packet size [0-9]+ bytes on if_index [0-9]+, rx queue [0-9]+, id [0-9]+"
rx_capture = [
"",
"--rx-capture=exit",
"--rx-capture=exit,entry"
]
for verbose in DEFAULT_TIER[TIER]['verbose']:
for mode in TEST_MODE:
self.load_prog(["xdp_pass", "test_long_func_name", "xdp_pass"], mode)
prog_id_1 = self.get_prog_id("xdp_dispatcher")
prog_id_4 = self.get_prog_id("xdp_pass", 1)
prog_cmd_list = [
f"xdp_dispatcher,xdp_pass@{prog_id_4}",
f"{prog_id_1},{prog_id_4}",
f"xdp_dispatcher,{prog_id_4}"
]
for proto in ['ipv4', 'ipv6']:
for prog_cmd in prog_cmd_list:
for rx_cap_cmd in rx_capture:
dump_proc, logfile, errfile = utils.run_cmd_local_background(f"timeout 13 {XDPDUMP} -i {HOST_IFNAME} -p {prog_cmd} {rx_cap_cmd} {verbose}", wait_time=5)
utils.ping_from_remote(proto, count=10)
output, err = utils.kill_background_and_get(dump_proc, logfile, errfile)
if "entry" in rx_cap_cmd:
self.assertRegex(output, entry_regex)
if "exit" in rx_cap_cmd:
self.assertRegex(output, exit_regex)
self.unload_prog(wait_time=0.5)