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#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0
from lib.py import ksft_run, ksft_exit, ksft_eq, KsftSkipEx
from lib.py import EthtoolFamily, NetdevFamily
from lib.py import NetDrvEnv
from lib.py import cmd
import glob
def sys_get_queues(ifname) -> int:
folders = glob.glob(f'/sys/class/net/{ifname}/queues/rx-*')
return len(folders)
def nl_get_queues(cfg, nl):
queues = nl.queue_get({'ifindex': cfg.ifindex}, dump=True)
if queues:
return len([q for q in queues if q['type'] == 'rx'])
return None
def get_queues(cfg, nl) -> None:
queues = nl_get_queues(cfg, nl)
if not queues:
raise KsftSkipEx('queue-get not supported by device')
expected = sys_get_queues(cfg.dev['ifname'])
ksft_eq(queues, expected)
def addremove_queues(cfg, nl) -> None:
queues = nl_get_queues(cfg, nl)
if not queues:
raise KsftSkipEx('queue-get not supported by device')
curr_queues = sys_get_queues(cfg.dev['ifname'])
if curr_queues == 1:
raise KsftSkipEx('cannot decrement queue: already at 1')
netnl = EthtoolFamily()
channels = netnl.channels_get({'header': {'dev-index': cfg.ifindex}})
if channels['combined-count'] == 0:
rx_type = 'rx'
else:
rx_type = 'combined'
expected = curr_queues - 1
cmd(f"ethtool -L {cfg.dev['ifname']} {rx_type} {expected}", timeout=10)
queues = nl_get_queues(cfg, nl)
ksft_eq(queues, expected)
expected = curr_queues
cmd(f"ethtool -L {cfg.dev['ifname']} {rx_type} {expected}", timeout=10)
queues = nl_get_queues(cfg, nl)
ksft_eq(queues, expected)
def main() -> None:
with NetDrvEnv(__file__, queue_count=3) as cfg:
ksft_run([get_queues, addremove_queues], args=(cfg, NetdevFamily()))
ksft_exit()
if __name__ == "__main__":
main()
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