mlxsw: spectrum_buffers: Forbid changing threshold type of first egress pool

Multicast packets have three egress quotas:
* Per egress port
* Per egress port and traffic class
* Per switch priority

The limits on the switch priority are not exposed to the user and
specified as dynamic threshold on the first egress pool.

Forbid changing the threshold type of the first egress pool so that
these limits are always valid.

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>

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
index 0d82cf68ff6da3ffad4a0892077370856d79c354..3c08816183bce7b1d17211774f23ba4b920f190b 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
@@ -421,8 +421,8 @@ static const struct mlxsw_sp_sb_pr mlxsw_sp1_sb_prs[] = {
        MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC,
                       MLXSW_SP1_SB_PR_INGRESS_MNG_SIZE),
        /* Egress pools. */
-       MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC,
-                      MLXSW_SP1_SB_PR_EGRESS_SIZE),
+       MLXSW_SP_SB_PR_EXT(MLXSW_REG_SBPR_MODE_DYNAMIC,
+                          MLXSW_SP1_SB_PR_EGRESS_SIZE, true, false),
        MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
        MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
        MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
@@ -443,8 +443,8 @@ static const struct mlxsw_sp_sb_pr mlxsw_sp2_sb_prs[] = {
        MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC,
                       MLXSW_SP2_SB_PR_INGRESS_MNG_SIZE),
        /* Egress pools. */
-       MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC,
-                      MLXSW_SP2_SB_PR_EGRESS_SIZE),
+       MLXSW_SP_SB_PR_EXT(MLXSW_REG_SBPR_MODE_DYNAMIC,
+                          MLXSW_SP2_SB_PR_EGRESS_SIZE, true, false),
        MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_STATIC, 0),
        MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_STATIC, 0),
        MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_STATIC, 0),