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igc: Add checking for basetime less than zero

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[ Upstream commit 3b61764fb49a6e147ac90d71dccdddc9d5508ba1 ]

Using the tc qdisc command, the user can set basetime to any value.
Checking should be done on the driver's side to prevent registering
basetime values that are less than zero.

Fixes: ec50a9d437f0 ("igc: Add support for taprio offloading")
Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Muhammad Husaini Zulkifli 2022-12-09 12:15:19 +08:00 committed by Greg Kroah-Hartman
parent 94a033ae7d
commit 3770bdee96
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/intel/igc/igc_main.c
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@ -6040,6 +6040,9 @@ static int igc_save_qbv_schedule(struct igc_adapter *adapter,
if (!qopt->enable)
return igc_tsn_clear_schedule(adapter);
if (qopt->base_time < 0)
return -ERANGE;
if (adapter->base_time)
return -EALREADY;