Commit 9b29afa1 authored by Jakub Kicinski's avatar Jakub Kicinski
Browse files

selftests: drv-net: give HW stats sync time extra 25% of margin 



There are transient failures for devices which update stats
periodically, especially if it's the FW DMA'ing the stats
rather than host periodic work querying the FW. Wait 25%
longer than strictly necessary.

For devices which don't report stats-block-usecs we retain
25 msec as the default wait time (0.025sec == 20,000usec * 1.25).

Reviewed-by: default avatarPetr Machata <petrm@nvidia.com>
Reviewed-by: default avatarWillem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260318033819.1469350-3-kuba@kernel.org


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 8888bf4f

tools/testing/selftests/drivers/net/lib/py/env.py

+2 −2
Original line number Diff line number Diff line
@@ -288,8 +288,8 @@ class NetDrvEpEnv(NetDrvEnvBase): 
                if "Operation not supported" not in e.cmd.stderr:

                    raise



            self._stats_settle_time = 0.025 + \

                data.get('stats-block-usecs', 0) / 1000 / 1000

            self._stats_settle_time = \

                1.25 * data.get('stats-block-usecs', 20000) / 1000 / 1000



        time.sleep(self._stats_settle_time)