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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144#!/usr/bin/env python3# SPDX-License-Identifier: GPL-2.0
"""Test napi threaded states."""
from lib.py import ksft_run, ksft_exitfrom lib.py import ksft_eq, ksft_ne, ksft_gefrom lib.py import NetDrvEnv, NetdevFamilyfrom lib.py import cmd, defer, ethtool
def _assert_napi_threaded_enabled(nl, napi_id) -> None: napi = nl.napi_get({'id': napi_id}) ksft_eq(napi['threaded'], 'enabled') ksft_ne(napi.get('pid'), None)
def _assert_napi_threaded_disabled(nl, napi_id) -> None: napi = nl.napi_get({'id': napi_id}) ksft_eq(napi['threaded'], 'disabled') ksft_eq(napi.get('pid'), None)
def _set_threaded_state(cfg, threaded) -> None: with open(f"/sys/class/net/{cfg.ifname}/threaded", "wb") as fp: fp.write(str(threaded).encode('utf-8'))
def _setup_deferred_cleanup(cfg) -> None: combined = ethtool(f"-l {cfg.ifname}", json=True)[0].get("combined", 0) ksft_ge(combined, 2) defer(ethtool, f"-L {cfg.ifname} combined {combined}")
threaded = cmd(f"cat /sys/class/net/{cfg.ifname}/threaded").stdout defer(_set_threaded_state, cfg, threaded)
return combined
def napi_init(cfg, nl) -> None: """ Test that threaded state (in the persistent NAPI config) gets updated even when NAPI with given ID is not allocated at the time. """
qcnt = _setup_deferred_cleanup(cfg)
_set_threaded_state(cfg, 1) cmd(f"ethtool -L {cfg.ifname} combined 1") _set_threaded_state(cfg, 0) cmd(f"ethtool -L {cfg.ifname} combined {qcnt}")
napis = nl.napi_get({'ifindex': cfg.ifindex}, dump=True) for napi in napis: ksft_eq(napi['threaded'], 'disabled') ksft_eq(napi.get('pid'), None)
cmd(f"ethtool -L {cfg.ifname} combined 1") _set_threaded_state(cfg, 1) cmd(f"ethtool -L {cfg.ifname} combined {qcnt}")
napis = nl.napi_get({'ifindex': cfg.ifindex}, dump=True) for napi in napis: ksft_eq(napi['threaded'], 'enabled') ksft_ne(napi.get('pid'), None)
def enable_dev_threaded_disable_napi_threaded(cfg, nl) -> None: """ Test that when napi threaded is enabled at device level and then disabled at napi level for one napi, the threaded state of all napis is preserved after a change in number of queues. """
napis = nl.napi_get({'ifindex': cfg.ifindex}, dump=True) ksft_ge(len(napis), 2)
napi0_id = napis[0]['id'] napi1_id = napis[1]['id']
qcnt = _setup_deferred_cleanup(cfg)
# set threaded _set_threaded_state(cfg, 1)
# check napi threaded is set for both napis _assert_napi_threaded_enabled(nl, napi0_id) _assert_napi_threaded_enabled(nl, napi1_id)
# disable threaded for napi1 nl.napi_set({'id': napi1_id, 'threaded': 'disabled'})
cmd(f"ethtool -L {cfg.ifname} combined 1") cmd(f"ethtool -L {cfg.ifname} combined {qcnt}") _assert_napi_threaded_enabled(nl, napi0_id) _assert_napi_threaded_disabled(nl, napi1_id)
def change_num_queues(cfg, nl) -> None: """ Test that when napi threaded is enabled at device level, the napi threaded state is preserved after a change in number of queues. """
napis = nl.napi_get({'ifindex': cfg.ifindex}, dump=True) ksft_ge(len(napis), 2)
napi0_id = napis[0]['id'] napi1_id = napis[1]['id']
qcnt = _setup_deferred_cleanup(cfg)
# set threaded _set_threaded_state(cfg, 1)
# check napi threaded is set for both napis _assert_napi_threaded_enabled(nl, napi0_id) _assert_napi_threaded_enabled(nl, napi1_id)
cmd(f"ethtool -L {cfg.ifname} combined 1") cmd(f"ethtool -L {cfg.ifname} combined {qcnt}")
# check napi threaded is set for both napis _assert_napi_threaded_enabled(nl, napi0_id) _assert_napi_threaded_enabled(nl, napi1_id)
def main() -> None: """ Ksft boiler plate main """
with NetDrvEnv(__file__, queue_count=2) as cfg: ksft_run([napi_init, change_num_queues, enable_dev_threaded_disable_napi_threaded], args=(cfg, NetdevFamily())) ksft_exit()
if __name__ == "__main__": main()