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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>
This commit is contained in:
Ido Schimmel 2016-04-06 17:10:05 +02:00 committed by David S. Miller
parent 7ad7cd6113
commit d6b7c13b01
2 changed files with 4 additions and 0 deletions
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2
drivers/net/ethernet/mellanox/mlxsw/reg.h
View File

@ -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

2
drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
View File

@ -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);
}