From f0138e2596f2994129451ee320ff8692cb7bc86b Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Tue, 5 Jan 2016 11:36:40 +0100 Subject: [PATCH] mlxsw: pci: Adjust value of CPU egress traffic class During initialization, when creating the send descriptor queues (SDQs), we specify the CPU egress traffic class of each SDQ. The maximum number of classes of this type is different in the two ASICs supported by this PCI driver. New firmware versions check this value is set correctly, which causes errors on the Spectrum ASIC, as its max exposed egress traffic class is lower than 7. Solve this by setting this field to 3, which is an acceptable value for both ASICs. Note that we currently do not expose the QoS capabilities of the ASICs, so setting this to an hardcoded value is OK for now. Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c index d2102e572b1d..c071077aafbd 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/pci.c +++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c @@ -384,7 +384,7 @@ static int mlxsw_pci_sdq_init(struct mlxsw_pci *mlxsw_pci, char *mbox, /* Set CQ of same number of this SDQ. */ mlxsw_cmd_mbox_sw2hw_dq_cq_set(mbox, q->num); - mlxsw_cmd_mbox_sw2hw_dq_sdq_tclass_set(mbox, 7); + mlxsw_cmd_mbox_sw2hw_dq_sdq_tclass_set(mbox, 3); mlxsw_cmd_mbox_sw2hw_dq_log2_dq_sz_set(mbox, 3); /* 8 pages */ for (i = 0; i < MLXSW_PCI_AQ_PAGES; i++) { dma_addr_t mapaddr = __mlxsw_pci_queue_page_get(q, i); -- 2.39.5