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Date: Mon, 25 May 2020 00:51:01 +0300 From: Ido Schimmel <idosch@...sch.org> To: netdev@...r.kernel.org Cc: davem@...emloft.net, kuba@...nel.org, jiri@...lanox.com, mlxsw@...lanox.com, Ido Schimmel <idosch@...lanox.com> Subject: [PATCH net-next 05/11] mlxsw: spectrum_buffers: Assign non-zero quotas to TC 0 of the CPU port From: Ido Schimmel <idosch@...lanox.com> As explained in commit 9ffcc3725f09 ("mlxsw: spectrum: Allow packets to be trapped from any PG"), incoming packets can be admitted to the shared buffer and forwarded / trapped, if: (Ingress{Port}.Usage < Thres && Ingress{Port,PG}.Usage < Thres && Egress{Port}.Usage < Thres && Egress{Port,TC}.Usage < Thres) || (Ingress{Port}.Usage < Min || Ingress{Port,PG} < Min || Egress{Port}.Usage < Min || Egress{Port,TC}.Usage < Min) Trapped packets are scheduled to transmission through the CPU port. Currently, the minimum and maximum quotas of traffic class (TC) 0 of the CPU port are 0, which means it is not usable. Assign non-zero quotas to TC 0 of the CPU port, so that it could be utilized by subsequent patches. Signed-off-by: Ido Schimmel <idosch@...lanox.com> Reviewed-by: Jiri Pirko <jiri@...lanox.com> --- drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c index 968f0902e4fe..21bfb2f6a6f0 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c @@ -614,7 +614,7 @@ static const struct mlxsw_sp_sb_cm mlxsw_sp2_sb_cms_egress[] = { #define MLXSW_SP_CPU_PORT_SB_CM MLXSW_SP_SB_CM(0, 0, MLXSW_SP_SB_POOL_EGR_CPU) static const struct mlxsw_sp_sb_cm mlxsw_sp_cpu_port_sb_cms[] = { - MLXSW_SP_CPU_PORT_SB_CM, + MLXSW_SP_SB_CM(1000, 8, MLXSW_SP_SB_POOL_EGR_CPU), MLXSW_SP_SB_CM(1000, 8, MLXSW_SP_SB_POOL_EGR_CPU), MLXSW_SP_SB_CM(1000, 8, MLXSW_SP_SB_POOL_EGR_CPU), MLXSW_SP_SB_CM(1000, 8, MLXSW_SP_SB_POOL_EGR_CPU), -- 2.26.2
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