[PATCH net 3/3] net/mlx5e: Reject unsupported CB Shaper TSA in ETS validation
From: Tariq Toukan <tariqt@nvidia.com>
Date: 2026-06-22 11:30:28
Also in:
linux-rdma, lkml
Subsystem:
mellanox ethernet driver (mlx5e), mellanox mlx5 core vpi driver, networking drivers, the rest · Maintainers:
Saeed Mahameed, Tariq Toukan, Mark Bloch, Leon Romanovsky, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Alexei Lazar <redacted>
Credit Based (CB) TSA is not supported by the mlx5 driver, so reject
any configurations that specify it.
Fixes: 08fb1dacdd76 ("net/mlx5e: Support DCBNL IEEE ETS")
Signed-off-by: Alexei Lazar <redacted>
Reviewed-by: Carolina Jubran <redacted>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
index e4161603cdc0..602b982b1bbf 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c@@ -326,6 +326,12 @@ static int mlx5e_dbcnl_validate_ets(struct net_device *netdev, /* Validate Non ETS BW */ for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { + if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_CB_SHAPER) { + netdev_err(netdev, + "Failed to validate ETS: CB Shaper is not supported\n"); + return -EOPNOTSUPP; + } + if (ets->tc_tsa[i] != IEEE_8021QAZ_TSA_ETS && ets->tc_tx_bw[i]) { netdev_err(netdev,
--
2.44.0