Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#!/usr/bin/env python3
2# SPDX-License-Identifier: GPL-2.0
3
4import os
5import random, string, time
6from lib.py import ksft_run, ksft_exit
7from lib.py import ksft_eq, KsftSkipEx, KsftFailEx
8from lib.py import EthtoolFamily, NetDrvEpEnv
9from lib.py import bkg, cmd, wait_port_listen, rand_port
10from lib.py import defer, ethtool, ip
11
12no_sleep=False
13
14def _test_v4(cfg) -> None:
15 if not cfg.addr_v["4"]:
16 return
17
18 cmd("ping -c 1 -W0.5 " + cfg.remote_addr_v["4"])
19 cmd("ping -c 1 -W0.5 " + cfg.addr_v["4"], host=cfg.remote)
20 cmd("ping -s 65000 -c 1 -W0.5 " + cfg.remote_addr_v["4"])
21 cmd("ping -s 65000 -c 1 -W0.5 " + cfg.addr_v["4"], host=cfg.remote)
22
23def _test_v6(cfg) -> None:
24 if not cfg.addr_v["6"]:
25 return
26
27 cmd("ping -c 1 -W5 " + cfg.remote_addr_v["6"])
28 cmd("ping -c 1 -W5 " + cfg.addr_v["6"], host=cfg.remote)
29 cmd("ping -s 65000 -c 1 -W0.5 " + cfg.remote_addr_v["6"])
30 cmd("ping -s 65000 -c 1 -W0.5 " + cfg.addr_v["6"], host=cfg.remote)
31
32def _test_tcp(cfg) -> None:
33 cfg.require_cmd("socat", remote=True)
34
35 port = rand_port()
36 listen_cmd = f"socat -{cfg.addr_ipver} -t 2 -u TCP-LISTEN:{port},reuseport STDOUT"
37
38 test_string = ''.join(random.choice(string.ascii_lowercase) for _ in range(65536))
39 with bkg(listen_cmd, exit_wait=True) as nc:
40 wait_port_listen(port)
41
42 cmd(f"echo {test_string} | socat -t 2 -u STDIN TCP:{cfg.baddr}:{port}",
43 shell=True, host=cfg.remote)
44 ksft_eq(nc.stdout.strip(), test_string)
45
46 test_string = ''.join(random.choice(string.ascii_lowercase) for _ in range(65536))
47 with bkg(listen_cmd, host=cfg.remote, exit_wait=True) as nc:
48 wait_port_listen(port, host=cfg.remote)
49
50 cmd(f"echo {test_string} | socat -t 2 -u STDIN TCP:{cfg.remote_baddr}:{port}", shell=True)
51 ksft_eq(nc.stdout.strip(), test_string)
52
53def _set_offload_checksum(cfg, netnl, on) -> None:
54 try:
55 ethtool(f" -K {cfg.ifname} rx {on} tx {on} ")
56 except:
57 return
58
59def _set_xdp_generic_sb_on(cfg) -> None:
60 prog = cfg.net_lib_dir / "xdp_dummy.bpf.o"
61 cmd(f"ip link set dev {cfg.remote_ifname} mtu 1500", shell=True, host=cfg.remote)
62 cmd(f"ip link set dev {cfg.ifname} mtu 1500 xdpgeneric obj {prog} sec xdp", shell=True)
63 defer(cmd, f"ip link set dev {cfg.ifname} xdpgeneric off")
64
65 if no_sleep != True:
66 time.sleep(10)
67
68def _set_xdp_generic_mb_on(cfg) -> None:
69 prog = cfg.net_lib_dir / "xdp_dummy.bpf.o"
70 cmd(f"ip link set dev {cfg.remote_ifname} mtu 9000", shell=True, host=cfg.remote)
71 defer(ip, f"link set dev {cfg.remote_ifname} mtu 1500", host=cfg.remote)
72 ip("link set dev %s mtu 9000 xdpgeneric obj %s sec xdp.frags" % (cfg.ifname, prog))
73 defer(ip, f"link set dev {cfg.ifname} mtu 1500 xdpgeneric off")
74
75 if no_sleep != True:
76 time.sleep(10)
77
78def _set_xdp_native_sb_on(cfg) -> None:
79 prog = cfg.net_lib_dir / "xdp_dummy.bpf.o"
80 cmd(f"ip link set dev {cfg.remote_ifname} mtu 1500", shell=True, host=cfg.remote)
81 cmd(f"ip -j link set dev {cfg.ifname} mtu 1500 xdp obj {prog} sec xdp", shell=True)
82 defer(ip, f"link set dev {cfg.ifname} mtu 1500 xdp off")
83 xdp_info = ip("-d link show %s" % (cfg.ifname), json=True)[0]
84 if xdp_info['xdp']['mode'] != 1:
85 """
86 If the interface doesn't support native-mode, it falls back to generic mode.
87 The mode value 1 is native and 2 is generic.
88 So it raises an exception if mode is not 1(native mode).
89 """
90 raise KsftSkipEx('device does not support native-XDP')
91
92 if no_sleep != True:
93 time.sleep(10)
94
95def _set_xdp_native_mb_on(cfg) -> None:
96 prog = cfg.net_lib_dir / "xdp_dummy.bpf.o"
97 cmd(f"ip link set dev {cfg.remote_ifname} mtu 9000", shell=True, host=cfg.remote)
98 defer(ip, f"link set dev {cfg.remote_ifname} mtu 1500", host=cfg.remote)
99 try:
100 cmd(f"ip link set dev {cfg.ifname} mtu 9000 xdp obj {prog} sec xdp.frags", shell=True)
101 defer(ip, f"link set dev {cfg.ifname} mtu 1500 xdp off")
102 except Exception as e:
103 raise KsftSkipEx('device does not support native-multi-buffer XDP')
104
105 if no_sleep != True:
106 time.sleep(10)
107
108def _set_xdp_offload_on(cfg) -> None:
109 prog = cfg.net_lib_dir / "xdp_dummy.bpf.o"
110 cmd(f"ip link set dev {cfg.ifname} mtu 1500", shell=True)
111 try:
112 cmd(f"ip link set dev {cfg.ifname} xdpoffload obj {prog} sec xdp", shell=True)
113 except Exception as e:
114 raise KsftSkipEx('device does not support offloaded XDP')
115 defer(ip, f"link set dev {cfg.ifname} xdpoffload off")
116 cmd(f"ip link set dev {cfg.remote_ifname} mtu 1500", shell=True, host=cfg.remote)
117
118 if no_sleep != True:
119 time.sleep(10)
120
121def get_interface_info(cfg) -> None:
122 global no_sleep
123
124 if cfg.remote_ifname == "":
125 raise KsftFailEx('Can not get remote interface')
126 local_info = ip("-d link show %s" % (cfg.ifname), json=True)[0]
127 if 'parentbus' in local_info and local_info['parentbus'] == "netdevsim":
128 no_sleep=True
129 if 'linkinfo' in local_info and local_info['linkinfo']['info_kind'] == "veth":
130 no_sleep=True
131
132def set_interface_init(cfg) -> None:
133 cmd(f"ip link set dev {cfg.ifname} mtu 1500", shell=True)
134 cmd(f"ip link set dev {cfg.ifname} xdp off ", shell=True)
135 cmd(f"ip link set dev {cfg.ifname} xdpgeneric off ", shell=True)
136 cmd(f"ip link set dev {cfg.ifname} xdpoffload off", shell=True)
137 cmd(f"ip link set dev {cfg.remote_ifname} mtu 1500", shell=True, host=cfg.remote)
138
139def test_default_v4(cfg, netnl) -> None:
140 cfg.require_ipver("4")
141
142 _set_offload_checksum(cfg, netnl, "off")
143 _test_v4(cfg)
144 _test_tcp(cfg)
145 _set_offload_checksum(cfg, netnl, "on")
146 _test_v4(cfg)
147 _test_tcp(cfg)
148
149def test_default_v6(cfg, netnl) -> None:
150 cfg.require_ipver("6")
151
152 _set_offload_checksum(cfg, netnl, "off")
153 _test_v6(cfg)
154 _test_tcp(cfg)
155 _set_offload_checksum(cfg, netnl, "on")
156 _test_v6(cfg)
157 _test_tcp(cfg)
158
159def test_xdp_generic_sb(cfg, netnl) -> None:
160 _set_xdp_generic_sb_on(cfg)
161 _set_offload_checksum(cfg, netnl, "off")
162 _test_v4(cfg)
163 _test_v6(cfg)
164 _test_tcp(cfg)
165 _set_offload_checksum(cfg, netnl, "on")
166 _test_v4(cfg)
167 _test_v6(cfg)
168 _test_tcp(cfg)
169
170def test_xdp_generic_mb(cfg, netnl) -> None:
171 _set_xdp_generic_mb_on(cfg)
172 _set_offload_checksum(cfg, netnl, "off")
173 _test_v4(cfg)
174 _test_v6(cfg)
175 _test_tcp(cfg)
176 _set_offload_checksum(cfg, netnl, "on")
177 _test_v4(cfg)
178 _test_v6(cfg)
179 _test_tcp(cfg)
180
181def test_xdp_native_sb(cfg, netnl) -> None:
182 _set_xdp_native_sb_on(cfg)
183 _set_offload_checksum(cfg, netnl, "off")
184 _test_v4(cfg)
185 _test_v6(cfg)
186 _test_tcp(cfg)
187 _set_offload_checksum(cfg, netnl, "on")
188 _test_v4(cfg)
189 _test_v6(cfg)
190 _test_tcp(cfg)
191
192def test_xdp_native_mb(cfg, netnl) -> None:
193 _set_xdp_native_mb_on(cfg)
194 _set_offload_checksum(cfg, netnl, "off")
195 _test_v4(cfg)
196 _test_v6(cfg)
197 _test_tcp(cfg)
198 _set_offload_checksum(cfg, netnl, "on")
199 _test_v4(cfg)
200 _test_v6(cfg)
201 _test_tcp(cfg)
202
203def test_xdp_offload(cfg, netnl) -> None:
204 _set_xdp_offload_on(cfg)
205 _test_v4(cfg)
206 _test_v6(cfg)
207 _test_tcp(cfg)
208
209def main() -> None:
210 with NetDrvEpEnv(__file__) as cfg:
211 get_interface_info(cfg)
212 set_interface_init(cfg)
213 ksft_run([test_default_v4,
214 test_default_v6,
215 test_xdp_generic_sb,
216 test_xdp_generic_mb,
217 test_xdp_native_sb,
218 test_xdp_native_mb,
219 test_xdp_offload],
220 args=(cfg, EthtoolFamily()))
221 ksft_exit()
222
223
224if __name__ == "__main__":
225 main()