mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
59dd07db92
Move xdp_helper to net/lib to make it easier for other selftests to use the helper. Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Link: https://patch.msgid.link/20250425071018.36078-2-minhquangbui99@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
125 lines
3.7 KiB
Python
Executable file
125 lines
3.7 KiB
Python
Executable file
#!/usr/bin/env python3
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# SPDX-License-Identifier: GPL-2.0
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from lib.py import ksft_disruptive, ksft_exit, ksft_run
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from lib.py import ksft_eq, ksft_not_in, ksft_raises, KsftSkipEx, KsftFailEx
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from lib.py import EthtoolFamily, NetdevFamily, NlError
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from lib.py import NetDrvEnv
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from lib.py import bkg, cmd, defer, ip
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import errno
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import glob
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import os
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import socket
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import struct
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def sys_get_queues(ifname, qtype='rx') -> int:
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folders = glob.glob(f'/sys/class/net/{ifname}/queues/{qtype}-*')
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return len(folders)
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def nl_get_queues(cfg, nl, qtype='rx'):
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queues = nl.queue_get({'ifindex': cfg.ifindex}, dump=True)
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if queues:
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return len([q for q in queues if q['type'] == qtype])
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return None
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def check_xsk(cfg, nl, xdp_queue_id=0) -> None:
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# Probe for support
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xdp = cmd(f'{cfg.net_lib_dir / "xdp_helper"} - -', fail=False)
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if xdp.ret == 255:
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raise KsftSkipEx('AF_XDP unsupported')
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elif xdp.ret > 0:
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raise KsftFailEx('unable to create AF_XDP socket')
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with bkg(f'{cfg.net_lib_dir / "xdp_helper"} {cfg.ifindex} {xdp_queue_id}',
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ksft_wait=3):
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rx = tx = False
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queues = nl.queue_get({'ifindex': cfg.ifindex}, dump=True)
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if not queues:
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raise KsftSkipEx("Netlink reports no queues")
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for q in queues:
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if q['id'] == 0:
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if q['type'] == 'rx':
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rx = True
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if q['type'] == 'tx':
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tx = True
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ksft_eq(q.get('xsk', None), {},
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comment="xsk attr on queue we configured")
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else:
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ksft_not_in('xsk', q,
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comment="xsk attr on queue we didn't configure")
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ksft_eq(rx, True)
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ksft_eq(tx, True)
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def get_queues(cfg, nl) -> None:
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snl = NetdevFamily(recv_size=4096)
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for qtype in ['rx', 'tx']:
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queues = nl_get_queues(cfg, snl, qtype)
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if not queues:
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raise KsftSkipEx('queue-get not supported by device')
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expected = sys_get_queues(cfg.dev['ifname'], qtype)
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ksft_eq(queues, expected)
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def addremove_queues(cfg, nl) -> None:
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queues = nl_get_queues(cfg, nl)
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if not queues:
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raise KsftSkipEx('queue-get not supported by device')
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curr_queues = sys_get_queues(cfg.dev['ifname'])
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if curr_queues == 1:
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raise KsftSkipEx('cannot decrement queue: already at 1')
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netnl = EthtoolFamily()
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channels = netnl.channels_get({'header': {'dev-index': cfg.ifindex}})
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rx_type = 'rx'
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if channels.get('combined-count', 0) > 0:
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rx_type = 'combined'
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expected = curr_queues - 1
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cmd(f"ethtool -L {cfg.dev['ifname']} {rx_type} {expected}", timeout=10)
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queues = nl_get_queues(cfg, nl)
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ksft_eq(queues, expected)
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expected = curr_queues
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cmd(f"ethtool -L {cfg.dev['ifname']} {rx_type} {expected}", timeout=10)
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queues = nl_get_queues(cfg, nl)
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ksft_eq(queues, expected)
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@ksft_disruptive
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def check_down(cfg, nl) -> None:
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# Check the NAPI IDs before interface goes down and hides them
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napis = nl.napi_get({'ifindex': cfg.ifindex}, dump=True)
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ip(f"link set dev {cfg.dev['ifname']} down")
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defer(ip, f"link set dev {cfg.dev['ifname']} up")
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with ksft_raises(NlError) as cm:
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nl.queue_get({'ifindex': cfg.ifindex, 'id': 0, 'type': 'rx'})
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ksft_eq(cm.exception.nl_msg.error, -errno.ENOENT)
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if napis:
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with ksft_raises(NlError) as cm:
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nl.napi_get({'id': napis[0]['id']})
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ksft_eq(cm.exception.nl_msg.error, -errno.ENOENT)
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def main() -> None:
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with NetDrvEnv(__file__, queue_count=100) as cfg:
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ksft_run([get_queues, addremove_queues, check_down, check_xsk],
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args=(cfg, NetdevFamily()))
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ksft_exit()
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if __name__ == "__main__":
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main()
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