diff options
| author | Ido Schimmel <idosch@mellanox.com> | 2019-04-22 12:08:43 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-04-22 22:09:32 -0700 |
| commit | 0636f4de791f4e2b1aaab0a92cced4e0c6c191f1 (patch) | |
| tree | c5ded57e4b2c1912a5ce1fa0fbb6f3cec2364f7b /drivers | |
| parent | 93d3668c027d8f6dd55d0b904d88675726662d99 (diff) | |
| download | linux-0636f4de791f4e2b1aaab0a92cced4e0c6c191f1.tar.gz | |
mlxsw: spectrum_buffers: Add ability to veto pool's configuration
Subsequent patches are going to need to veto changes in certain pools' size and / or threshold type (mode). Add two fields to the pool's struct that indicate if either of these attributes is allowed to change and enforce that. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c index 28f44116ad86..f49b8791dcd9 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c @@ -16,6 +16,8 @@ struct mlxsw_sp_sb_pr { enum mlxsw_reg_sbpr_mode mode; u32 size; + u8 freeze_mode:1, + freeze_size:1; }; struct mlxsw_cp_sb_occ { @@ -932,14 +934,27 @@ int mlxsw_sp_sb_pool_set(struct mlxsw_core *mlxsw_core, { struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core); u32 pool_size = mlxsw_sp_bytes_cells(mlxsw_sp, size); + const struct mlxsw_sp_sb_pr *pr; enum mlxsw_reg_sbpr_mode mode; + mode = (enum mlxsw_reg_sbpr_mode) threshold_type; + pr = &mlxsw_sp->sb_vals->prs[pool_index]; + if (size > MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_BUFFER_SIZE)) { NL_SET_ERR_MSG_MOD(extack, "Exceeded shared buffer size"); return -EINVAL; } - mode = (enum mlxsw_reg_sbpr_mode) threshold_type; + if (pr->freeze_mode && pr->mode != mode) { + NL_SET_ERR_MSG_MOD(extack, "Changing this pool's threshold type is forbidden"); + return -EINVAL; + }; + + if (pr->freeze_size && pr->size != size) { + NL_SET_ERR_MSG_MOD(extack, "Changing this pool's size is forbidden"); + return -EINVAL; + }; + return mlxsw_sp_sb_pr_write(mlxsw_sp, pool_index, mode, pool_size, false); } |