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igc: Add checking for basetime less than zero

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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: ec50a9d437 ("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>
This commit is contained in:
Muhammad Husaini Zulkifli 2022-12-09 12:15:19 +08:00 committed by Tony Nguyen
parent d8f45be01d
commit 3b61764fb4
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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@ -6047,6 +6047,9 @@ 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;