From d6b7c13b018f1785743150f079638bb3ed69fff1 Mon Sep 17 00:00:00 2001 From: Ido Schimmel <idosch@mellanox.com> Date: Wed, 6 Apr 2016 17:10:05 +0200 Subject: [PATCH] mlxsw: spectrum: Set port's shared buffer size to 0 In addition to the priority group (PG) buffers in the headroom, the device enables the allocation of headroom shared buffer, which can be shared between different PGs. However, we are not going to use the headroom shared buffer and instead allow the user to use its size for PGs or the switch's shared buffer. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> --- drivers/net/ethernet/mellanox/mlxsw/reg.h | 2 ++ drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h index f08a17fdd4c31..370914e607e01 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/reg.h +++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h @@ -2455,6 +2455,8 @@ MLXSW_ITEM32(reg, pbmc, xoff_timer_value, 0x04, 16, 16); */ MLXSW_ITEM32(reg, pbmc, xoff_refresh, 0x04, 0, 16); +#define MLXSW_REG_PBMC_PORT_SHARED_BUF_IDX 11 + /* reg_pbmc_buf_lossy * The field indicates if the buffer is lossy. * 0 - Lossless diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c index e7a5b73188f1b..97c8d537be5b6 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c @@ -80,6 +80,8 @@ static int mlxsw_sp_port_pb_init(struct mlxsw_sp_port *mlxsw_sp_port) pb = &mlxsw_sp_pbs[i]; mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, pb->index, pb->size); } + mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, + MLXSW_REG_PBMC_PORT_SHARED_BUF_IDX, 0); return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl); } -- GitLab