Commit cfd70e3e authored by Taehee Yoo's avatar Taehee Yoo Committed by Jakub Kicinski
Browse files

selftest: net-drv: hds: add test for HDS feature 



HDS/HDS-thresh features were updated/implemented. so add some tests for
these features.

HDS tests are the same with `ethtool -G eth0 tcp-data-split <on | off |
auto >` but `auto` depends on driver specification.
So, it doesn't include `auto` case.

HDS-thresh tests are same with `ethtool -G eth0 hds-thresh <0 - MAX>`
It includes both 0 and MAX cases. It also includes exceed case, MAX + 1.

Signed-off-by: default avatarTaehee Yoo <ap420073@gmail.com>
Link: https://patch.msgid.link/20250114142852.3364986-11-ap420073@gmail.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent f394d07b

tools/testing/selftests/drivers/net/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ TEST_PROGS := \ 
	queues.py \

	stats.py \

	shaper.py \

	hds.py \

# end of TEST_PROGS



include ../../lib.mk

tools/testing/selftests/drivers/net/hds.py

0 → 100755
+120 −0
Original line number Diff line number Diff line 
#!/usr/bin/env python3

# SPDX-License-Identifier: GPL-2.0



import errno

from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_raises, KsftSkipEx

from lib.py import EthtoolFamily, NlError

from lib.py import NetDrvEnv



def get_hds(cfg, netnl) -> None:

    try:

        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})

    except NlError as e:

        raise KsftSkipEx('ring-get not supported by device')

    if 'tcp-data-split' not in rings:

        raise KsftSkipEx('tcp-data-split not supported by device')



def get_hds_thresh(cfg, netnl) -> None:

    try:

        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})

    except NlError as e:

        raise KsftSkipEx('ring-get not supported by device')

    if 'hds-thresh' not in rings:

        raise KsftSkipEx('hds-thresh not supported by device')



def set_hds_enable(cfg, netnl) -> None:

    try:

        netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'tcp-data-split': 'enabled'})

    except NlError as e:

        if e.error == errno.EINVAL:

            raise KsftSkipEx("disabling of HDS not supported by the device")

        elif e.error == errno.EOPNOTSUPP:

            raise KsftSkipEx("ring-set not supported by the device")

    try:

        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})

    except NlError as e:

        raise KsftSkipEx('ring-get not supported by device')

    if 'tcp-data-split' not in rings:

        raise KsftSkipEx('tcp-data-split not supported by device')



    ksft_eq('enabled', rings['tcp-data-split'])



def set_hds_disable(cfg, netnl) -> None:

    try:

        netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'tcp-data-split': 'disabled'})

    except NlError as e:

        if e.error == errno.EINVAL:

            raise KsftSkipEx("disabling of HDS not supported by the device")

        elif e.error == errno.EOPNOTSUPP:

            raise KsftSkipEx("ring-set not supported by the device")

    try:

        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})

    except NlError as e:

        raise KsftSkipEx('ring-get not supported by device')

    if 'tcp-data-split' not in rings:

        raise KsftSkipEx('tcp-data-split not supported by device')



    ksft_eq('disabled', rings['tcp-data-split'])



def set_hds_thresh_zero(cfg, netnl) -> None:

    try:

        netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'hds-thresh': 0})

    except NlError as e:

        if e.error == errno.EINVAL:

            raise KsftSkipEx("hds-thresh-set not supported by the device")

        elif e.error == errno.EOPNOTSUPP:

            raise KsftSkipEx("ring-set not supported by the device")

    try:

        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})

    except NlError as e:

        raise KsftSkipEx('ring-get not supported by device')

    if 'hds-thresh' not in rings:

        raise KsftSkipEx('hds-thresh not supported by device')



    ksft_eq(0, rings['hds-thresh'])



def set_hds_thresh_max(cfg, netnl) -> None:

    try:

        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})

    except NlError as e:

        raise KsftSkipEx('ring-get not supported by device')

    if 'hds-thresh' not in rings:

        raise KsftSkipEx('hds-thresh not supported by device')

    try:

        netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'hds-thresh': rings['hds-thresh-max']})

    except NlError as e:

        if e.error == errno.EINVAL:

            raise KsftSkipEx("hds-thresh-set not supported by the device")

        elif e.error == errno.EOPNOTSUPP:

            raise KsftSkipEx("ring-set not supported by the device")

    rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})

    ksft_eq(rings['hds-thresh'], rings['hds-thresh-max'])



def set_hds_thresh_gt(cfg, netnl) -> None:

    try:

        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})

    except NlError as e:

        raise KsftSkipEx('ring-get not supported by device')

    if 'hds-thresh' not in rings:

        raise KsftSkipEx('hds-thresh not supported by device')

    if 'hds-thresh-max' not in rings:

        raise KsftSkipEx('hds-thresh-max not defined by device')

    hds_gt = rings['hds-thresh-max'] + 1

    with ksft_raises(NlError) as e:

        netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'hds-thresh': hds_gt})

    ksft_eq(e.exception.nl_msg.error, -errno.EINVAL)



def main() -> None:

    with NetDrvEnv(__file__, queue_count=3) as cfg:

        ksft_run([get_hds,

                  get_hds_thresh,

                  set_hds_disable,

                  set_hds_enable,

                  set_hds_thresh_zero,

                  set_hds_thresh_max,

                  set_hds_thresh_gt],

                 args=(cfg, EthtoolFamily()))

    ksft_exit()



if __name__ == "__main__":

    main()