| #!/usr/bin/python3 |
| |
| # Copyright (C) 2017 Netronome Systems, Inc. |
| # |
| # This software is licensed under the GNU General License Version 2, |
| # June 1991 as shown in the file COPYING in the top-level directory of this |
| # source tree. |
| # |
| # THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" |
| # WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, |
| # BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| # FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE |
| # OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME |
| # THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. |
| |
| from datetime import datetime |
| import argparse |
| import json |
| import os |
| import pprint |
| import random |
| import string |
| import struct |
| import subprocess |
| import time |
| |
| logfile = None |
| log_level = 1 |
| skip_extack = False |
| bpf_test_dir = os.path.dirname(os.path.realpath(__file__)) |
| pp = pprint.PrettyPrinter() |
| devs = [] # devices we created for clean up |
| files = [] # files to be removed |
| netns = [] # net namespaces to be removed |
| |
| def log_get_sec(level=0): |
| return "*" * (log_level + level) |
| |
| def log_level_inc(add=1): |
| global log_level |
| log_level += add |
| |
| def log_level_dec(sub=1): |
| global log_level |
| log_level -= sub |
| |
| def log_level_set(level): |
| global log_level |
| log_level = level |
| |
| def log(header, data, level=None): |
| """ |
| Output to an optional log. |
| """ |
| if logfile is None: |
| return |
| if level is not None: |
| log_level_set(level) |
| |
| if not isinstance(data, str): |
| data = pp.pformat(data) |
| |
| if len(header): |
| logfile.write("\n" + log_get_sec() + " ") |
| logfile.write(header) |
| if len(header) and len(data.strip()): |
| logfile.write("\n") |
| logfile.write(data) |
| |
| def skip(cond, msg): |
| if not cond: |
| return |
| print("SKIP: " + msg) |
| log("SKIP: " + msg, "", level=1) |
| os.sys.exit(0) |
| |
| def fail(cond, msg): |
| if not cond: |
| return |
| print("FAIL: " + msg) |
| log("FAIL: " + msg, "", level=1) |
| os.sys.exit(1) |
| |
| def start_test(msg): |
| log(msg, "", level=1) |
| log_level_inc() |
| print(msg) |
| |
| def cmd(cmd, shell=True, include_stderr=False, background=False, fail=True): |
| """ |
| Run a command in subprocess and return tuple of (retval, stdout); |
| optionally return stderr as well as third value. |
| """ |
| proc = subprocess.Popen(cmd, shell=shell, stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE) |
| if background: |
| msg = "%s START: %s" % (log_get_sec(1), |
| datetime.now().strftime("%H:%M:%S.%f")) |
| log("BKG " + proc.args, msg) |
| return proc |
| |
| return cmd_result(proc, include_stderr=include_stderr, fail=fail) |
| |
| def cmd_result(proc, include_stderr=False, fail=False): |
| stdout, stderr = proc.communicate() |
| stdout = stdout.decode("utf-8") |
| stderr = stderr.decode("utf-8") |
| proc.stdout.close() |
| proc.stderr.close() |
| |
| stderr = "\n" + stderr |
| if stderr[-1] == "\n": |
| stderr = stderr[:-1] |
| |
| sec = log_get_sec(1) |
| log("CMD " + proc.args, |
| "RETCODE: %d\n%s STDOUT:\n%s%s STDERR:%s\n%s END: %s" % |
| (proc.returncode, sec, stdout, sec, stderr, |
| sec, datetime.now().strftime("%H:%M:%S.%f"))) |
| |
| if proc.returncode != 0 and fail: |
| if len(stderr) > 0 and stderr[-1] == "\n": |
| stderr = stderr[:-1] |
| raise Exception("Command failed: %s\n%s" % (proc.args, stderr)) |
| |
| if include_stderr: |
| return proc.returncode, stdout, stderr |
| else: |
| return proc.returncode, stdout |
| |
| def rm(f): |
| cmd("rm -f %s" % (f)) |
| if f in files: |
| files.remove(f) |
| |
| def tool(name, args, flags, JSON=True, ns="", fail=True, include_stderr=False): |
| params = "" |
| if JSON: |
| params += "%s " % (flags["json"]) |
| |
| if ns != "": |
| ns = "ip netns exec %s " % (ns) |
| |
| if include_stderr: |
| ret, stdout, stderr = cmd(ns + name + " " + params + args, |
| fail=fail, include_stderr=True) |
| else: |
| ret, stdout = cmd(ns + name + " " + params + args, |
| fail=fail, include_stderr=False) |
| |
| if JSON and len(stdout.strip()) != 0: |
| out = json.loads(stdout) |
| else: |
| out = stdout |
| |
| if include_stderr: |
| return ret, out, stderr |
| else: |
| return ret, out |
| |
| def bpftool(args, JSON=True, ns="", fail=True): |
| return tool("bpftool", args, {"json":"-p"}, JSON=JSON, ns=ns, fail=fail) |
| |
| def bpftool_prog_list(expected=None, ns=""): |
| _, progs = bpftool("prog show", JSON=True, ns=ns, fail=True) |
| if expected is not None: |
| if len(progs) != expected: |
| fail(True, "%d BPF programs loaded, expected %d" % |
| (len(progs), expected)) |
| return progs |
| |
| def bpftool_map_list(expected=None, ns=""): |
| _, maps = bpftool("map show", JSON=True, ns=ns, fail=True) |
| if expected is not None: |
| if len(maps) != expected: |
| fail(True, "%d BPF maps loaded, expected %d" % |
| (len(maps), expected)) |
| return maps |
| |
| def bpftool_prog_list_wait(expected=0, n_retry=20): |
| for i in range(n_retry): |
| nprogs = len(bpftool_prog_list()) |
| if nprogs == expected: |
| return |
| time.sleep(0.05) |
| raise Exception("Time out waiting for program counts to stabilize want %d, have %d" % (expected, nprogs)) |
| |
| def bpftool_map_list_wait(expected=0, n_retry=20): |
| for i in range(n_retry): |
| nmaps = len(bpftool_map_list()) |
| if nmaps == expected: |
| return |
| time.sleep(0.05) |
| raise Exception("Time out waiting for map counts to stabilize want %d, have %d" % (expected, nmaps)) |
| |
| def ip(args, force=False, JSON=True, ns="", fail=True, include_stderr=False): |
| if force: |
| args = "-force " + args |
| return tool("ip", args, {"json":"-j"}, JSON=JSON, ns=ns, |
| fail=fail, include_stderr=include_stderr) |
| |
| def tc(args, JSON=True, ns="", fail=True, include_stderr=False): |
| return tool("tc", args, {"json":"-p"}, JSON=JSON, ns=ns, |
| fail=fail, include_stderr=include_stderr) |
| |
| def ethtool(dev, opt, args, fail=True): |
| return cmd("ethtool %s %s %s" % (opt, dev["ifname"], args), fail=fail) |
| |
| def bpf_obj(name, sec=".text", path=bpf_test_dir,): |
| return "obj %s sec %s" % (os.path.join(path, name), sec) |
| |
| def bpf_pinned(name): |
| return "pinned %s" % (name) |
| |
| def bpf_bytecode(bytecode): |
| return "bytecode \"%s\"" % (bytecode) |
| |
| def mknetns(n_retry=10): |
| for i in range(n_retry): |
| name = ''.join([random.choice(string.ascii_letters) for i in range(8)]) |
| ret, _ = ip("netns add %s" % (name), fail=False) |
| if ret == 0: |
| netns.append(name) |
| return name |
| return None |
| |
| def int2str(fmt, val): |
| ret = [] |
| for b in struct.pack(fmt, val): |
| ret.append(int(b)) |
| return " ".join(map(lambda x: str(x), ret)) |
| |
| def str2int(strtab): |
| inttab = [] |
| for i in strtab: |
| inttab.append(int(i, 16)) |
| ba = bytearray(inttab) |
| if len(strtab) == 4: |
| fmt = "I" |
| elif len(strtab) == 8: |
| fmt = "Q" |
| else: |
| raise Exception("String array of len %d can't be unpacked to an int" % |
| (len(strtab))) |
| return struct.unpack(fmt, ba)[0] |
| |
| class DebugfsDir: |
| """ |
| Class for accessing DebugFS directories as a dictionary. |
| """ |
| |
| def __init__(self, path): |
| self.path = path |
| self._dict = self._debugfs_dir_read(path) |
| |
| def __len__(self): |
| return len(self._dict.keys()) |
| |
| def __getitem__(self, key): |
| if type(key) is int: |
| key = list(self._dict.keys())[key] |
| return self._dict[key] |
| |
| def __setitem__(self, key, value): |
| log("DebugFS set %s = %s" % (key, value), "") |
| log_level_inc() |
| |
| cmd("echo '%s' > %s/%s" % (value, self.path, key)) |
| log_level_dec() |
| |
| _, out = cmd('cat %s/%s' % (self.path, key)) |
| self._dict[key] = out.strip() |
| |
| def _debugfs_dir_read(self, path): |
| dfs = {} |
| |
| log("DebugFS state for %s" % (path), "") |
| log_level_inc(add=2) |
| |
| _, out = cmd('ls ' + path) |
| for f in out.split(): |
| p = os.path.join(path, f) |
| if os.path.isfile(p): |
| _, out = cmd('cat %s/%s' % (path, f)) |
| dfs[f] = out.strip() |
| elif os.path.isdir(p): |
| dfs[f] = DebugfsDir(p) |
| else: |
| raise Exception("%s is neither file nor directory" % (p)) |
| |
| log_level_dec() |
| log("DebugFS state", dfs) |
| log_level_dec() |
| |
| return dfs |
| |
| class NetdevSim: |
| """ |
| Class for netdevsim netdevice and its attributes. |
| """ |
| |
| def __init__(self): |
| self.dev = self._netdevsim_create() |
| devs.append(self) |
| |
| self.ns = "" |
| |
| self.dfs_dir = '/sys/kernel/debug/netdevsim/%s' % (self.dev['ifname']) |
| self.dfs_refresh() |
| |
| def __getitem__(self, key): |
| return self.dev[key] |
| |
| def _netdevsim_create(self): |
| _, old = ip("link show") |
| ip("link add sim%d type netdevsim") |
| _, new = ip("link show") |
| |
| for dev in new: |
| f = filter(lambda x: x["ifname"] == dev["ifname"], old) |
| if len(list(f)) == 0: |
| return dev |
| |
| raise Exception("failed to create netdevsim device") |
| |
| def remove(self): |
| devs.remove(self) |
| ip("link del dev %s" % (self.dev["ifname"]), ns=self.ns) |
| |
| def dfs_refresh(self): |
| self.dfs = DebugfsDir(self.dfs_dir) |
| return self.dfs |
| |
| def dfs_num_bound_progs(self): |
| path = os.path.join(self.dfs_dir, "bpf_bound_progs") |
| _, progs = cmd('ls %s' % (path)) |
| return len(progs.split()) |
| |
| def dfs_get_bound_progs(self, expected): |
| progs = DebugfsDir(os.path.join(self.dfs_dir, "bpf_bound_progs")) |
| if expected is not None: |
| if len(progs) != expected: |
| fail(True, "%d BPF programs bound, expected %d" % |
| (len(progs), expected)) |
| return progs |
| |
| def wait_for_flush(self, bound=0, total=0, n_retry=20): |
| for i in range(n_retry): |
| nbound = self.dfs_num_bound_progs() |
| nprogs = len(bpftool_prog_list()) |
| if nbound == bound and nprogs == total: |
| return |
| time.sleep(0.05) |
| raise Exception("Time out waiting for program counts to stabilize want %d/%d, have %d bound, %d loaded" % (bound, total, nbound, nprogs)) |
| |
| def set_ns(self, ns): |
| name = "1" if ns == "" else ns |
| ip("link set dev %s netns %s" % (self.dev["ifname"], name), ns=self.ns) |
| self.ns = ns |
| |
| def set_mtu(self, mtu, fail=True): |
| return ip("link set dev %s mtu %d" % (self.dev["ifname"], mtu), |
| fail=fail) |
| |
| def set_xdp(self, bpf, mode, force=False, JSON=True, verbose=False, |
| fail=True, include_stderr=False): |
| if verbose: |
| bpf += " verbose" |
| return ip("link set dev %s xdp%s %s" % (self.dev["ifname"], mode, bpf), |
| force=force, JSON=JSON, |
| fail=fail, include_stderr=include_stderr) |
| |
| def unset_xdp(self, mode, force=False, JSON=True, |
| fail=True, include_stderr=False): |
| return ip("link set dev %s xdp%s off" % (self.dev["ifname"], mode), |
| force=force, JSON=JSON, |
| fail=fail, include_stderr=include_stderr) |
| |
| def ip_link_show(self, xdp): |
| _, link = ip("link show dev %s" % (self['ifname'])) |
| if len(link) > 1: |
| raise Exception("Multiple objects on ip link show") |
| if len(link) < 1: |
| return {} |
| fail(xdp != "xdp" in link, |
| "XDP program not reporting in iplink (reported %s, expected %s)" % |
| ("xdp" in link, xdp)) |
| return link[0] |
| |
| def tc_add_ingress(self): |
| tc("qdisc add dev %s ingress" % (self['ifname'])) |
| |
| def tc_del_ingress(self): |
| tc("qdisc del dev %s ingress" % (self['ifname'])) |
| |
| def tc_flush_filters(self, bound=0, total=0): |
| self.tc_del_ingress() |
| self.tc_add_ingress() |
| self.wait_for_flush(bound=bound, total=total) |
| |
| def tc_show_ingress(self, expected=None): |
| # No JSON support, oh well... |
| flags = ["skip_sw", "skip_hw", "in_hw"] |
| named = ["protocol", "pref", "chain", "handle", "id", "tag"] |
| |
| args = "-s filter show dev %s ingress" % (self['ifname']) |
| _, out = tc(args, JSON=False) |
| |
| filters = [] |
| lines = out.split('\n') |
| for line in lines: |
| words = line.split() |
| if "handle" not in words: |
| continue |
| fltr = {} |
| for flag in flags: |
| fltr[flag] = flag in words |
| for name in named: |
| try: |
| idx = words.index(name) |
| fltr[name] = words[idx + 1] |
| except ValueError: |
| pass |
| filters.append(fltr) |
| |
| if expected is not None: |
| fail(len(filters) != expected, |
| "%d ingress filters loaded, expected %d" % |
| (len(filters), expected)) |
| return filters |
| |
| def cls_filter_op(self, op, qdisc="ingress", prio=None, handle=None, |
| chain=None, cls="", params="", |
| fail=True, include_stderr=False): |
| spec = "" |
| if prio is not None: |
| spec += " prio %d" % (prio) |
| if handle: |
| spec += " handle %s" % (handle) |
| if chain is not None: |
| spec += " chain %d" % (chain) |
| |
| return tc("filter {op} dev {dev} {qdisc} {spec} {cls} {params}"\ |
| .format(op=op, dev=self['ifname'], qdisc=qdisc, spec=spec, |
| cls=cls, params=params), |
| fail=fail, include_stderr=include_stderr) |
| |
| def cls_bpf_add_filter(self, bpf, op="add", prio=None, handle=None, |
| chain=None, da=False, verbose=False, |
| skip_sw=False, skip_hw=False, |
| fail=True, include_stderr=False): |
| cls = "bpf " + bpf |
| |
| params = "" |
| if da: |
| params += " da" |
| if verbose: |
| params += " verbose" |
| if skip_sw: |
| params += " skip_sw" |
| if skip_hw: |
| params += " skip_hw" |
| |
| return self.cls_filter_op(op=op, prio=prio, handle=handle, cls=cls, |
| chain=chain, params=params, |
| fail=fail, include_stderr=include_stderr) |
| |
| def set_ethtool_tc_offloads(self, enable, fail=True): |
| args = "hw-tc-offload %s" % ("on" if enable else "off") |
| return ethtool(self, "-K", args, fail=fail) |
| |
| ################################################################################ |
| def clean_up(): |
| global files, netns, devs |
| |
| for dev in devs: |
| dev.remove() |
| for f in files: |
| cmd("rm -f %s" % (f)) |
| for ns in netns: |
| cmd("ip netns delete %s" % (ns)) |
| files = [] |
| netns = [] |
| |
| def pin_prog(file_name, idx=0): |
| progs = bpftool_prog_list(expected=(idx + 1)) |
| prog = progs[idx] |
| bpftool("prog pin id %d %s" % (prog["id"], file_name)) |
| files.append(file_name) |
| |
| return file_name, bpf_pinned(file_name) |
| |
| def pin_map(file_name, idx=0, expected=1): |
| maps = bpftool_map_list(expected=expected) |
| m = maps[idx] |
| bpftool("map pin id %d %s" % (m["id"], file_name)) |
| files.append(file_name) |
| |
| return file_name, bpf_pinned(file_name) |
| |
| def check_dev_info_removed(prog_file=None, map_file=None): |
| bpftool_prog_list(expected=0) |
| ret, err = bpftool("prog show pin %s" % (prog_file), fail=False) |
| fail(ret == 0, "Showing prog with removed device did not fail") |
| fail(err["error"].find("No such device") == -1, |
| "Showing prog with removed device expected ENODEV, error is %s" % |
| (err["error"])) |
| |
| bpftool_map_list(expected=0) |
| ret, err = bpftool("map show pin %s" % (map_file), fail=False) |
| fail(ret == 0, "Showing map with removed device did not fail") |
| fail(err["error"].find("No such device") == -1, |
| "Showing map with removed device expected ENODEV, error is %s" % |
| (err["error"])) |
| |
| def check_dev_info(other_ns, ns, prog_file=None, map_file=None, removed=False): |
| progs = bpftool_prog_list(expected=1, ns=ns) |
| prog = progs[0] |
| |
| fail("dev" not in prog.keys(), "Device parameters not reported") |
| dev = prog["dev"] |
| fail("ifindex" not in dev.keys(), "Device parameters not reported") |
| fail("ns_dev" not in dev.keys(), "Device parameters not reported") |
| fail("ns_inode" not in dev.keys(), "Device parameters not reported") |
| |
| if not other_ns: |
| fail("ifname" not in dev.keys(), "Ifname not reported") |
| fail(dev["ifname"] != sim["ifname"], |
| "Ifname incorrect %s vs %s" % (dev["ifname"], sim["ifname"])) |
| else: |
| fail("ifname" in dev.keys(), "Ifname is reported for other ns") |
| |
| maps = bpftool_map_list(expected=2, ns=ns) |
| for m in maps: |
| fail("dev" not in m.keys(), "Device parameters not reported") |
| fail(dev != m["dev"], "Map's device different than program's") |
| |
| def check_extack(output, reference, args): |
| if skip_extack: |
| return |
| lines = output.split("\n") |
| comp = len(lines) >= 2 and lines[1] == reference |
| fail(not comp, "Missing or incorrect netlink extack message") |
| |
| def check_extack_nsim(output, reference, args): |
| check_extack(output, "Error: netdevsim: " + reference, args) |
| |
| def check_no_extack(res, needle): |
| fail((res[1] + res[2]).count(needle) or (res[1] + res[2]).count("Warning:"), |
| "Found '%s' in command output, leaky extack?" % (needle)) |
| |
| def check_verifier_log(output, reference): |
| lines = output.split("\n") |
| for l in reversed(lines): |
| if l == reference: |
| return |
| fail(True, "Missing or incorrect message from netdevsim in verifier log") |
| |
| def test_spurios_extack(sim, obj, skip_hw, needle): |
| res = sim.cls_bpf_add_filter(obj, prio=1, handle=1, skip_hw=skip_hw, |
| include_stderr=True) |
| check_no_extack(res, needle) |
| res = sim.cls_bpf_add_filter(obj, op="replace", prio=1, handle=1, |
| skip_hw=skip_hw, include_stderr=True) |
| check_no_extack(res, needle) |
| res = sim.cls_filter_op(op="delete", prio=1, handle=1, cls="bpf", |
| include_stderr=True) |
| check_no_extack(res, needle) |
| |
| |
| # Parse command line |
| parser = argparse.ArgumentParser() |
| parser.add_argument("--log", help="output verbose log to given file") |
| args = parser.parse_args() |
| if args.log: |
| logfile = open(args.log, 'w+') |
| logfile.write("# -*-Org-*-") |
| |
| log("Prepare...", "", level=1) |
| log_level_inc() |
| |
| # Check permissions |
| skip(os.getuid() != 0, "test must be run as root") |
| |
| # Check tools |
| ret, progs = bpftool("prog", fail=False) |
| skip(ret != 0, "bpftool not installed") |
| # Check no BPF programs are loaded |
| skip(len(progs) != 0, "BPF programs already loaded on the system") |
| |
| # Check netdevsim |
| ret, out = cmd("modprobe netdevsim", fail=False) |
| skip(ret != 0, "netdevsim module could not be loaded") |
| |
| # Check debugfs |
| _, out = cmd("mount") |
| if out.find("/sys/kernel/debug type debugfs") == -1: |
| cmd("mount -t debugfs none /sys/kernel/debug") |
| |
| # Check samples are compiled |
| samples = ["sample_ret0.o", "sample_map_ret0.o"] |
| for s in samples: |
| ret, out = cmd("ls %s/%s" % (bpf_test_dir, s), fail=False) |
| skip(ret != 0, "sample %s/%s not found, please compile it" % |
| (bpf_test_dir, s)) |
| |
| # Check if iproute2 is built with libmnl (needed by extack support) |
| _, _, err = cmd("tc qdisc delete dev lo handle 0", |
| fail=False, include_stderr=True) |
| if err.find("Error: Failed to find qdisc with specified handle.") == -1: |
| print("Warning: no extack message in iproute2 output, libmnl missing?") |
| log("Warning: no extack message in iproute2 output, libmnl missing?", "") |
| skip_extack = True |
| |
| # Check if net namespaces seem to work |
| ns = mknetns() |
| skip(ns is None, "Could not create a net namespace") |
| cmd("ip netns delete %s" % (ns)) |
| netns = [] |
| |
| try: |
| obj = bpf_obj("sample_ret0.o") |
| bytecode = bpf_bytecode("1,6 0 0 4294967295,") |
| |
| start_test("Test destruction of generic XDP...") |
| sim = NetdevSim() |
| sim.set_xdp(obj, "generic") |
| sim.remove() |
| bpftool_prog_list_wait(expected=0) |
| |
| sim = NetdevSim() |
| sim.tc_add_ingress() |
| |
| start_test("Test TC non-offloaded...") |
| ret, _ = sim.cls_bpf_add_filter(obj, skip_hw=True, fail=False) |
| fail(ret != 0, "Software TC filter did not load") |
| |
| start_test("Test TC non-offloaded isn't getting bound...") |
| ret, _ = sim.cls_bpf_add_filter(obj, fail=False) |
| fail(ret != 0, "Software TC filter did not load") |
| sim.dfs_get_bound_progs(expected=0) |
| |
| sim.tc_flush_filters() |
| |
| start_test("Test TC offloads are off by default...") |
| ret, _, err = sim.cls_bpf_add_filter(obj, skip_sw=True, |
| fail=False, include_stderr=True) |
| fail(ret == 0, "TC filter loaded without enabling TC offloads") |
| check_extack(err, "Error: TC offload is disabled on net device.", args) |
| sim.wait_for_flush() |
| |
| sim.set_ethtool_tc_offloads(True) |
| sim.dfs["bpf_tc_non_bound_accept"] = "Y" |
| |
| start_test("Test TC offload by default...") |
| ret, _ = sim.cls_bpf_add_filter(obj, fail=False) |
| fail(ret != 0, "Software TC filter did not load") |
| sim.dfs_get_bound_progs(expected=0) |
| ingress = sim.tc_show_ingress(expected=1) |
| fltr = ingress[0] |
| fail(not fltr["in_hw"], "Filter not offloaded by default") |
| |
| sim.tc_flush_filters() |
| |
| start_test("Test TC cBPF bytcode tries offload by default...") |
| ret, _ = sim.cls_bpf_add_filter(bytecode, fail=False) |
| fail(ret != 0, "Software TC filter did not load") |
| sim.dfs_get_bound_progs(expected=0) |
| ingress = sim.tc_show_ingress(expected=1) |
| fltr = ingress[0] |
| fail(not fltr["in_hw"], "Bytecode not offloaded by default") |
| |
| sim.tc_flush_filters() |
| sim.dfs["bpf_tc_non_bound_accept"] = "N" |
| |
| start_test("Test TC cBPF unbound bytecode doesn't offload...") |
| ret, _, err = sim.cls_bpf_add_filter(bytecode, skip_sw=True, |
| fail=False, include_stderr=True) |
| fail(ret == 0, "TC bytecode loaded for offload") |
| check_extack_nsim(err, "netdevsim configured to reject unbound programs.", |
| args) |
| sim.wait_for_flush() |
| |
| start_test("Test non-0 chain offload...") |
| ret, _, err = sim.cls_bpf_add_filter(obj, chain=1, prio=1, handle=1, |
| skip_sw=True, |
| fail=False, include_stderr=True) |
| fail(ret == 0, "Offloaded a filter to chain other than 0") |
| check_extack(err, "Error: Driver supports only offload of chain 0.", args) |
| sim.tc_flush_filters() |
| |
| start_test("Test TC replace...") |
| sim.cls_bpf_add_filter(obj, prio=1, handle=1) |
| sim.cls_bpf_add_filter(obj, op="replace", prio=1, handle=1) |
| sim.cls_filter_op(op="delete", prio=1, handle=1, cls="bpf") |
| |
| sim.cls_bpf_add_filter(obj, prio=1, handle=1, skip_sw=True) |
| sim.cls_bpf_add_filter(obj, op="replace", prio=1, handle=1, skip_sw=True) |
| sim.cls_filter_op(op="delete", prio=1, handle=1, cls="bpf") |
| |
| sim.cls_bpf_add_filter(obj, prio=1, handle=1, skip_hw=True) |
| sim.cls_bpf_add_filter(obj, op="replace", prio=1, handle=1, skip_hw=True) |
| sim.cls_filter_op(op="delete", prio=1, handle=1, cls="bpf") |
| |
| start_test("Test TC replace bad flags...") |
| for i in range(3): |
| for j in range(3): |
| ret, _ = sim.cls_bpf_add_filter(obj, op="replace", prio=1, handle=1, |
| skip_sw=(j == 1), skip_hw=(j == 2), |
| fail=False) |
| fail(bool(ret) != bool(j), |
| "Software TC incorrect load in replace test, iteration %d" % |
| (j)) |
| sim.cls_filter_op(op="delete", prio=1, handle=1, cls="bpf") |
| |
| start_test("Test spurious extack from the driver...") |
| test_spurios_extack(sim, obj, False, "netdevsim") |
| test_spurios_extack(sim, obj, True, "netdevsim") |
| |
| sim.set_ethtool_tc_offloads(False) |
| |
| test_spurios_extack(sim, obj, False, "TC offload is disabled") |
| test_spurios_extack(sim, obj, True, "TC offload is disabled") |
| |
| sim.set_ethtool_tc_offloads(True) |
| |
| sim.tc_flush_filters() |
| |
| start_test("Test TC offloads work...") |
| ret, _, err = sim.cls_bpf_add_filter(obj, verbose=True, skip_sw=True, |
| fail=False, include_stderr=True) |
| fail(ret != 0, "TC filter did not load with TC offloads enabled") |
| check_verifier_log(err, "[netdevsim] Hello from netdevsim!") |
| |
| start_test("Test TC offload basics...") |
| dfs = sim.dfs_get_bound_progs(expected=1) |
| progs = bpftool_prog_list(expected=1) |
| ingress = sim.tc_show_ingress(expected=1) |
| |
| dprog = dfs[0] |
| prog = progs[0] |
| fltr = ingress[0] |
| fail(fltr["skip_hw"], "TC does reports 'skip_hw' on offloaded filter") |
| fail(not fltr["in_hw"], "TC does not report 'in_hw' for offloaded filter") |
| fail(not fltr["skip_sw"], "TC does not report 'skip_sw' back") |
| |
| start_test("Test TC offload is device-bound...") |
| fail(str(prog["id"]) != fltr["id"], "Program IDs don't match") |
| fail(prog["tag"] != fltr["tag"], "Program tags don't match") |
| fail(fltr["id"] != dprog["id"], "Program IDs don't match") |
| fail(dprog["state"] != "xlated", "Offloaded program state not translated") |
| fail(dprog["loaded"] != "Y", "Offloaded program is not loaded") |
| |
| start_test("Test disabling TC offloads is rejected while filters installed...") |
| ret, _ = sim.set_ethtool_tc_offloads(False, fail=False) |
| fail(ret == 0, "Driver should refuse to disable TC offloads with filters installed...") |
| |
| start_test("Test qdisc removal frees things...") |
| sim.tc_flush_filters() |
| sim.tc_show_ingress(expected=0) |
| |
| start_test("Test disabling TC offloads is OK without filters...") |
| ret, _ = sim.set_ethtool_tc_offloads(False, fail=False) |
| fail(ret != 0, |
| "Driver refused to disable TC offloads without filters installed...") |
| |
| sim.set_ethtool_tc_offloads(True) |
| |
| start_test("Test destroying device gets rid of TC filters...") |
| sim.cls_bpf_add_filter(obj, skip_sw=True) |
| sim.remove() |
| bpftool_prog_list_wait(expected=0) |
| |
| sim = NetdevSim() |
| sim.set_ethtool_tc_offloads(True) |
| |
| start_test("Test destroying device gets rid of XDP...") |
| sim.set_xdp(obj, "offload") |
| sim.remove() |
| bpftool_prog_list_wait(expected=0) |
| |
| sim = NetdevSim() |
| sim.set_ethtool_tc_offloads(True) |
| |
| start_test("Test XDP prog reporting...") |
| sim.set_xdp(obj, "drv") |
| ipl = sim.ip_link_show(xdp=True) |
| progs = bpftool_prog_list(expected=1) |
| fail(ipl["xdp"]["prog"]["id"] != progs[0]["id"], |
| "Loaded program has wrong ID") |
| |
| start_test("Test XDP prog replace without force...") |
| ret, _ = sim.set_xdp(obj, "drv", fail=False) |
| fail(ret == 0, "Replaced XDP program without -force") |
| sim.wait_for_flush(total=1) |
| |
| start_test("Test XDP prog replace with force...") |
| ret, _ = sim.set_xdp(obj, "drv", force=True, fail=False) |
| fail(ret != 0, "Could not replace XDP program with -force") |
| bpftool_prog_list_wait(expected=1) |
| ipl = sim.ip_link_show(xdp=True) |
| progs = bpftool_prog_list(expected=1) |
| fail(ipl["xdp"]["prog"]["id"] != progs[0]["id"], |
| "Loaded program has wrong ID") |
| fail("dev" in progs[0].keys(), |
| "Device parameters reported for non-offloaded program") |
| |
| start_test("Test XDP prog replace with bad flags...") |
| ret, _, err = sim.set_xdp(obj, "offload", force=True, |
| fail=False, include_stderr=True) |
| fail(ret == 0, "Replaced XDP program with a program in different mode") |
| check_extack_nsim(err, "program loaded with different flags.", args) |
| ret, _, err = sim.set_xdp(obj, "", force=True, |
| fail=False, include_stderr=True) |
| fail(ret == 0, "Replaced XDP program with a program in different mode") |
| check_extack_nsim(err, "program loaded with different flags.", args) |
| |
| start_test("Test XDP prog remove with bad flags...") |
| ret, _, err = sim.unset_xdp("offload", force=True, |
| fail=False, include_stderr=True) |
| fail(ret == 0, "Removed program with a bad mode mode") |
| check_extack_nsim(err, "program loaded with different flags.", args) |
| ret, _, err = sim.unset_xdp("", force=True, |
| fail=False, include_stderr=True) |
| fail(ret == 0, "Removed program with a bad mode mode") |
| check_extack_nsim(err, "program loaded with different flags.", args) |
| |
| start_test("Test MTU restrictions...") |
| ret, _ = sim.set_mtu(9000, fail=False) |
| fail(ret == 0, |
| "Driver should refuse to increase MTU to 9000 with XDP loaded...") |
| sim.unset_xdp("drv") |
| bpftool_prog_list_wait(expected=0) |
| sim.set_mtu(9000) |
| ret, _, err = sim.set_xdp(obj, "drv", fail=False, include_stderr=True) |
| fail(ret == 0, "Driver should refuse to load program with MTU of 9000...") |
| check_extack_nsim(err, "MTU too large w/ XDP enabled.", args) |
| sim.set_mtu(1500) |
| |
| sim.wait_for_flush() |
| start_test("Test XDP offload...") |
| _, _, err = sim.set_xdp(obj, "offload", verbose=True, include_stderr=True) |
| ipl = sim.ip_link_show(xdp=True) |
| link_xdp = ipl["xdp"]["prog"] |
| progs = bpftool_prog_list(expected=1) |
| prog = progs[0] |
| fail(link_xdp["id"] != prog["id"], "Loaded program has wrong ID") |
| check_verifier_log(err, "[netdevsim] Hello from netdevsim!") |
| |
| start_test("Test XDP offload is device bound...") |
| dfs = sim.dfs_get_bound_progs(expected=1) |
| dprog = dfs[0] |
| |
| fail(prog["id"] != link_xdp["id"], "Program IDs don't match") |
| fail(prog["tag"] != link_xdp["tag"], "Program tags don't match") |
| fail(str(link_xdp["id"]) != dprog["id"], "Program IDs don't match") |
| fail(dprog["state"] != "xlated", "Offloaded program state not translated") |
| fail(dprog["loaded"] != "Y", "Offloaded program is not loaded") |
| |
| start_test("Test removing XDP program many times...") |
| sim.unset_xdp("offload") |
| sim.unset_xdp("offload") |
| sim.unset_xdp("drv") |
| sim.unset_xdp("drv") |
| sim.unset_xdp("") |
| sim.unset_xdp("") |
| bpftool_prog_list_wait(expected=0) |
| |
| start_test("Test attempt to use a program for a wrong device...") |
| sim2 = NetdevSim() |
| sim2.set_xdp(obj, "offload") |
| pin_file, pinned = pin_prog("/sys/fs/bpf/tmp") |
| |
| ret, _, err = sim.set_xdp(pinned, "offload", |
| fail=False, include_stderr=True) |
| fail(ret == 0, "Pinned program loaded for a different device accepted") |
| check_extack_nsim(err, "program bound to different dev.", args) |
| sim2.remove() |
| ret, _, err = sim.set_xdp(pinned, "offload", |
| fail=False, include_stderr=True) |
| fail(ret == 0, "Pinned program loaded for a removed device accepted") |
| check_extack_nsim(err, "xdpoffload of non-bound program.", args) |
| rm(pin_file) |
| bpftool_prog_list_wait(expected=0) |
| |
| start_test("Test mixing of TC and XDP...") |
| sim.tc_add_ingress() |
| sim.set_xdp(obj, "offload") |
| ret, _, err = sim.cls_bpf_add_filter(obj, skip_sw=True, |
| fail=False, include_stderr=True) |
| fail(ret == 0, "Loading TC when XDP active should fail") |
| check_extack_nsim(err, "driver and netdev offload states mismatch.", args) |
| sim.unset_xdp("offload") |
| sim.wait_for_flush() |
| |
| sim.cls_bpf_add_filter(obj, skip_sw=True) |
| ret, _, err = sim.set_xdp(obj, "offload", fail=False, include_stderr=True) |
| fail(ret == 0, "Loading XDP when TC active should fail") |
| check_extack_nsim(err, "TC program is already loaded.", args) |
| |
| start_test("Test binding TC from pinned...") |
| pin_file, pinned = pin_prog("/sys/fs/bpf/tmp") |
| sim.tc_flush_filters(bound=1, total=1) |
| sim.cls_bpf_add_filter(pinned, da=True, skip_sw=True) |
| sim.tc_flush_filters(bound=1, total=1) |
| |
| start_test("Test binding XDP from pinned...") |
| sim.set_xdp(obj, "offload") |
| pin_file, pinned = pin_prog("/sys/fs/bpf/tmp2", idx=1) |
| |
| sim.set_xdp(pinned, "offload", force=True) |
| sim.unset_xdp("offload") |
| sim.set_xdp(pinned, "offload", force=True) |
| sim.unset_xdp("offload") |
| |
| start_test("Test offload of wrong type fails...") |
| ret, _ = sim.cls_bpf_add_filter(pinned, da=True, skip_sw=True, fail=False) |
| fail(ret == 0, "Managed to attach XDP program to TC") |
| |
| start_test("Test asking for TC offload of two filters...") |
| sim.cls_bpf_add_filter(obj, da=True, skip_sw=True) |
| ret, _, err = sim.cls_bpf_add_filter(obj, da=True, skip_sw=True, |
| fail=False, include_stderr=True) |
| fail(ret == 0, "Managed to offload two TC filters at the same time") |
| check_extack_nsim(err, "driver and netdev offload states mismatch.", args) |
| |
| sim.tc_flush_filters(bound=2, total=2) |
| |
| start_test("Test if netdev removal waits for translation...") |
| delay_msec = 500 |
| sim.dfs["bpf_bind_verifier_delay"] = delay_msec |
| start = time.time() |
| cmd_line = "tc filter add dev %s ingress bpf %s da skip_sw" % \ |
| (sim['ifname'], obj) |
| tc_proc = cmd(cmd_line, background=True, fail=False) |
| # Wait for the verifier to start |
| while sim.dfs_num_bound_progs() <= 2: |
| pass |
| sim.remove() |
| end = time.time() |
| ret, _ = cmd_result(tc_proc, fail=False) |
| time_diff = end - start |
| log("Time", "start:\t%s\nend:\t%s\ndiff:\t%s" % (start, end, time_diff)) |
| |
| fail(ret == 0, "Managed to load TC filter on a unregistering device") |
| delay_sec = delay_msec * 0.001 |
| fail(time_diff < delay_sec, "Removal process took %s, expected %s" % |
| (time_diff, delay_sec)) |
| |
| # Remove all pinned files and reinstantiate the netdev |
| clean_up() |
| bpftool_prog_list_wait(expected=0) |
| |
| sim = NetdevSim() |
| map_obj = bpf_obj("sample_map_ret0.o") |
| start_test("Test loading program with maps...") |
| sim.set_xdp(map_obj, "offload", JSON=False) # map fixup msg breaks JSON |
| |
| start_test("Test bpftool bound info reporting (own ns)...") |
| check_dev_info(False, "") |
| |
| start_test("Test bpftool bound info reporting (other ns)...") |
| ns = mknetns() |
| sim.set_ns(ns) |
| check_dev_info(True, "") |
| |
| start_test("Test bpftool bound info reporting (remote ns)...") |
| check_dev_info(False, ns) |
| |
| start_test("Test bpftool bound info reporting (back to own ns)...") |
| sim.set_ns("") |
| check_dev_info(False, "") |
| |
| prog_file, _ = pin_prog("/sys/fs/bpf/tmp_prog") |
| map_file, _ = pin_map("/sys/fs/bpf/tmp_map", idx=1, expected=2) |
| sim.remove() |
| |
| start_test("Test bpftool bound info reporting (removed dev)...") |
| check_dev_info_removed(prog_file=prog_file, map_file=map_file) |
| |
| # Remove all pinned files and reinstantiate the netdev |
| clean_up() |
| bpftool_prog_list_wait(expected=0) |
| |
| sim = NetdevSim() |
| |
| start_test("Test map update (no flags)...") |
| sim.set_xdp(map_obj, "offload", JSON=False) # map fixup msg breaks JSON |
| maps = bpftool_map_list(expected=2) |
| array = maps[0] if maps[0]["type"] == "array" else maps[1] |
| htab = maps[0] if maps[0]["type"] == "hash" else maps[1] |
| for m in maps: |
| for i in range(2): |
| bpftool("map update id %d key %s value %s" % |
| (m["id"], int2str("I", i), int2str("Q", i * 3))) |
| |
| for m in maps: |
| ret, _ = bpftool("map update id %d key %s value %s" % |
| (m["id"], int2str("I", 3), int2str("Q", 3 * 3)), |
| fail=False) |
| fail(ret == 0, "added too many entries") |
| |
| start_test("Test map update (exists)...") |
| for m in maps: |
| for i in range(2): |
| bpftool("map update id %d key %s value %s exist" % |
| (m["id"], int2str("I", i), int2str("Q", i * 3))) |
| |
| for m in maps: |
| ret, err = bpftool("map update id %d key %s value %s exist" % |
| (m["id"], int2str("I", 3), int2str("Q", 3 * 3)), |
| fail=False) |
| fail(ret == 0, "updated non-existing key") |
| fail(err["error"].find("No such file or directory") == -1, |
| "expected ENOENT, error is '%s'" % (err["error"])) |
| |
| start_test("Test map update (noexist)...") |
| for m in maps: |
| for i in range(2): |
| ret, err = bpftool("map update id %d key %s value %s noexist" % |
| (m["id"], int2str("I", i), int2str("Q", i * 3)), |
| fail=False) |
| fail(ret == 0, "updated existing key") |
| fail(err["error"].find("File exists") == -1, |
| "expected EEXIST, error is '%s'" % (err["error"])) |
| |
| start_test("Test map dump...") |
| for m in maps: |
| _, entries = bpftool("map dump id %d" % (m["id"])) |
| for i in range(2): |
| key = str2int(entries[i]["key"]) |
| fail(key != i, "expected key %d, got %d" % (key, i)) |
| val = str2int(entries[i]["value"]) |
| fail(val != i * 3, "expected value %d, got %d" % (val, i * 3)) |
| |
| start_test("Test map getnext...") |
| for m in maps: |
| _, entry = bpftool("map getnext id %d" % (m["id"])) |
| key = str2int(entry["next_key"]) |
| fail(key != 0, "next key %d, expected %d" % (key, 0)) |
| _, entry = bpftool("map getnext id %d key %s" % |
| (m["id"], int2str("I", 0))) |
| key = str2int(entry["next_key"]) |
| fail(key != 1, "next key %d, expected %d" % (key, 1)) |
| ret, err = bpftool("map getnext id %d key %s" % |
| (m["id"], int2str("I", 1)), fail=False) |
| fail(ret == 0, "got next key past the end of map") |
| fail(err["error"].find("No such file or directory") == -1, |
| "expected ENOENT, error is '%s'" % (err["error"])) |
| |
| start_test("Test map delete (htab)...") |
| for i in range(2): |
| bpftool("map delete id %d key %s" % (htab["id"], int2str("I", i))) |
| |
| start_test("Test map delete (array)...") |
| for i in range(2): |
| ret, err = bpftool("map delete id %d key %s" % |
| (htab["id"], int2str("I", i)), fail=False) |
| fail(ret == 0, "removed entry from an array") |
| fail(err["error"].find("No such file or directory") == -1, |
| "expected ENOENT, error is '%s'" % (err["error"])) |
| |
| start_test("Test map remove...") |
| sim.unset_xdp("offload") |
| bpftool_map_list_wait(expected=0) |
| sim.remove() |
| |
| sim = NetdevSim() |
| sim.set_xdp(map_obj, "offload", JSON=False) # map fixup msg breaks JSON |
| sim.remove() |
| bpftool_map_list_wait(expected=0) |
| |
| start_test("Test map creation fail path...") |
| sim = NetdevSim() |
| sim.dfs["bpf_map_accept"] = "N" |
| ret, _ = sim.set_xdp(map_obj, "offload", JSON=False, fail=False) |
| fail(ret == 0, |
| "netdevsim didn't refuse to create a map with offload disabled") |
| |
| print("%s: OK" % (os.path.basename(__file__))) |
| |
| finally: |
| log("Clean up...", "", level=1) |
| log_level_inc() |
| clean_up() |
