diff options
| author | Petr Machata <petrm@mellanox.com> | 2018-09-20 09:21:29 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-09-20 07:46:01 -0700 |
| commit | d144e3a2c9f79af5202d832e85fb72b0d6954ef5 (patch) | |
| tree | 5dff74c54960f04a05a83a86de0e6ea6311774c7 /drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c | |
| parent | f0024f0d98519f7ff5640ab6f11f102594985038 (diff) | |
mlxsw: spectrum_buffers: Allow an infinite maximum for per-TC pool limit
The SBCM register configures the shared buffer configuration according
to port and TC. So far all pools have had a dynamic size, where the
infinite size is easy to express by using max_buff of 0xff. However the
MC pool should be configured with static size, and the infinite size
thus needs to be set using the field SBCM.infi_max.
Therefore add the field infi_max to the SBCM register and to
mlxsw_reg_sbcm_pack(). Extend mlxsw_sp_sb_cm_write() to handle infinite
sizes as well. Report infinite pool limits as if the limit actually were
the total shared buffer size.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c index 646022fa4cbe..de51f567a76b 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c @@ -142,20 +142,24 @@ static int mlxsw_sp_sb_pr_write(struct mlxsw_sp *mlxsw_sp, u16 pool_index, static int mlxsw_sp_sb_cm_write(struct mlxsw_sp *mlxsw_sp, u8 local_port, u8 pg_buff, u32 min_buff, u32 max_buff, - u16 pool_index) + bool infi_max, u16 pool_index) { const struct mlxsw_sp_sb_pool_des *des = &mlxsw_sp_sb_pool_dess[pool_index]; char sbcm_pl[MLXSW_REG_SBCM_LEN]; + struct mlxsw_sp_sb_cm *cm; int err; mlxsw_reg_sbcm_pack(sbcm_pl, local_port, pg_buff, des->dir, - min_buff, max_buff, des->pool); + min_buff, max_buff, infi_max, des->pool); err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbcm), sbcm_pl); if (err) return err; + if (mlxsw_sp_sb_cm_exists(pg_buff, des->dir)) { - struct mlxsw_sp_sb_cm *cm; + if (infi_max) + max_buff = mlxsw_sp_bytes_cells(mlxsw_sp, + mlxsw_sp->sb->sb_size); cm = mlxsw_sp_sb_cm_get(mlxsw_sp, local_port, pg_buff, des->dir); @@ -451,9 +455,14 @@ static int __mlxsw_sp_sb_cms_init(struct mlxsw_sp *mlxsw_sp, u8 local_port, * therefore 'max_buff' isn't specified in cells. */ min_buff = mlxsw_sp_bytes_cells(mlxsw_sp, cm->min_buff); - err = mlxsw_sp_sb_cm_write(mlxsw_sp, local_port, i, - min_buff, cm->max_buff, - cm->pool_index); + if (cm->max_buff == MLXSW_SP_SB_INFI) + err = mlxsw_sp_sb_cm_write(mlxsw_sp, local_port, i, + min_buff, 0, + true, cm->pool_index); + else + err = mlxsw_sp_sb_cm_write(mlxsw_sp, local_port, i, + min_buff, cm->max_buff, + false, cm->pool_index); if (err) return err; } @@ -813,7 +822,7 @@ int mlxsw_sp_sb_tc_pool_bind_set(struct mlxsw_core_port *mlxsw_core_port, return err; return mlxsw_sp_sb_cm_write(mlxsw_sp, local_port, pg_buff, - 0, max_buff, pool_index); + 0, max_buff, false, pool_index); } #define MASKED_COUNT_MAX \ |