[PATCH v2 net-next 03/12] igc: deny tc-taprio changes to per-tc max SDU
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From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: 2022-09-23 16:34:23
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Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v2 of 4 in this series.
Revisions (4)
- v1 [diff vs current]
- v2 current
- v3 [diff vs current]
- v4 [diff vs current]
Since the driver does not act upon the max_sdu argument, deny any other values except the default all-zeroes, which means that all traffic classes should use the same MTU as the port itself. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> --- v1->v2: none drivers/net/ethernet/intel/igc/igc_main.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index bf6c461e1a2a..47fae443066c 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c@@ -5965,11 +5965,15 @@ static int igc_tsn_enable_qbv_scheduling(struct igc_adapter *adapter, struct tc_taprio_qopt_offload *qopt) { struct igc_hw *hw = &adapter->hw; - int err; + int tc, err; if (hw->mac.type != igc_i225) return -EOPNOTSUPP; + for (tc = 0; tc < TC_MAX_QUEUE; tc++) + if (qopt->max_sdu[tc]) + return -EOPNOTSUPP; + err = igc_save_qbv_schedule(adapter, qopt); if (err) return err;
--
2.34.1