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