mlxsw: spectrum: Use different arrays of FID families per-ASIC type

Egress VID for layer 2 multicast is determined from two tables, the MPE
and PGT tables. The MPE table is a two dimensional table indexed by local
port and SMPE index, which should be thought of as a FID index.

In Spectrum-1 the SMPE index is derived from the PGT entry, whereas in
Spectrum-2 and newer ASICs the SMPE index is a FID attribute configured
via the SFMR register.

The validity of the SMPE index in SFMR is influenced from two factors:
1. FID family. SMPE index is reserved for rFIDs, as their flooding is
   handled by firmware.
2. ASIC generation. SMPE index is always reserved for Spectrum-1.

As such, the validity of the SMPE index should be an attribute of the FID
family and have different arrays of FID families per-ASIC type.

As a preparation for SMPE index configuration, create separate arrays of
FID families for different ASICs.
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/spectrum.c

@@ -3232,6 +3232,7 @@ static int mlxsw_sp1_init(struct mlxsw_core *mlxsw_core,
 	mlxsw_sp->router_ops = &mlxsw_sp1_router_ops;
 	mlxsw_sp->listeners = mlxsw_sp1_listener;
 	mlxsw_sp->listeners_count = ARRAY_SIZE(mlxsw_sp1_listener);
+	mlxsw_sp->fid_family_arr = mlxsw_sp1_fid_family_arr;
 	mlxsw_sp->lowest_shaper_bs = MLXSW_REG_QEEC_LOWEST_SHAPER_BS_SP1;
 
 	return mlxsw_sp_init(mlxsw_core, mlxsw_bus_info, extack);
@@ -3264,6 +3265,7 @@ static int mlxsw_sp2_init(struct mlxsw_core *mlxsw_core,
 	mlxsw_sp->router_ops = &mlxsw_sp2_router_ops;
 	mlxsw_sp->listeners = mlxsw_sp2_listener;
 	mlxsw_sp->listeners_count = ARRAY_SIZE(mlxsw_sp2_listener);
+	mlxsw_sp->fid_family_arr = mlxsw_sp2_fid_family_arr;
 	mlxsw_sp->lowest_shaper_bs = MLXSW_REG_QEEC_LOWEST_SHAPER_BS_SP2;
 
 	return mlxsw_sp_init(mlxsw_core, mlxsw_bus_info, extack);
@@ -3296,6 +3298,7 @@ static int mlxsw_sp3_init(struct mlxsw_core *mlxsw_core,
 	mlxsw_sp->router_ops = &mlxsw_sp2_router_ops;
 	mlxsw_sp->listeners = mlxsw_sp2_listener;
 	mlxsw_sp->listeners_count = ARRAY_SIZE(mlxsw_sp2_listener);
+	mlxsw_sp->fid_family_arr = mlxsw_sp2_fid_family_arr;
 	mlxsw_sp->lowest_shaper_bs = MLXSW_REG_QEEC_LOWEST_SHAPER_BS_SP3;
 
 	return mlxsw_sp_init(mlxsw_core, mlxsw_bus_info, extack);
@@ -3328,6 +3331,7 @@ static int mlxsw_sp4_init(struct mlxsw_core *mlxsw_core,
 	mlxsw_sp->router_ops = &mlxsw_sp2_router_ops;
 	mlxsw_sp->listeners = mlxsw_sp2_listener;
 	mlxsw_sp->listeners_count = ARRAY_SIZE(mlxsw_sp2_listener);
+	mlxsw_sp->fid_family_arr = mlxsw_sp2_fid_family_arr;
 	mlxsw_sp->lowest_shaper_bs = MLXSW_REG_QEEC_LOWEST_SHAPER_BS_SP4;
 
 	return mlxsw_sp_init(mlxsw_core, mlxsw_bus_info, extack);

drivers/net/ethernet/mellanox/mlxsw/spectrum.h

@@ -211,6 +211,7 @@ struct mlxsw_sp {
 	const struct mlxsw_sp_mall_ops *mall_ops;
 	const struct mlxsw_sp_router_ops *router_ops;
 	const struct mlxsw_listener *listeners;
+	const struct mlxsw_sp_fid_family **fid_family_arr;
 	size_t listeners_count;
 	u32 lowest_shaper_bs;
 	struct rhashtable ipv6_addr_ht;
@@ -1286,6 +1287,9 @@ void mlxsw_sp_port_fids_fini(struct mlxsw_sp_port *mlxsw_sp_port);
 int mlxsw_sp_fids_init(struct mlxsw_sp *mlxsw_sp);
 void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp);
 
+extern const struct mlxsw_sp_fid_family *mlxsw_sp1_fid_family_arr[];
+extern const struct mlxsw_sp_fid_family *mlxsw_sp2_fid_family_arr[];
+
 /* spectrum_mr.c */
 enum mlxsw_sp_mr_route_prio {
 	MLXSW_SP_MR_ROUTE_PRIO_SG,

drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c

@@ -969,7 +969,14 @@ static const struct mlxsw_sp_fid_family mlxsw_sp_fid_dummy_family = {
 	.ops			= &mlxsw_sp_fid_dummy_ops,
 };
 
-static const struct mlxsw_sp_fid_family *mlxsw_sp_fid_family_arr[] = {
+const struct mlxsw_sp_fid_family *mlxsw_sp1_fid_family_arr[] = {
+	[MLXSW_SP_FID_TYPE_8021Q]	= &mlxsw_sp_fid_8021q_emu_family,
+	[MLXSW_SP_FID_TYPE_8021D]	= &mlxsw_sp_fid_8021d_family,
+	[MLXSW_SP_FID_TYPE_RFID]	= &mlxsw_sp_fid_rfid_family,
+	[MLXSW_SP_FID_TYPE_DUMMY]	= &mlxsw_sp_fid_dummy_family,
+};
+
+const struct mlxsw_sp_fid_family *mlxsw_sp2_fid_family_arr[] = {
 	[MLXSW_SP_FID_TYPE_8021Q]	= &mlxsw_sp_fid_8021q_emu_family,
 	[MLXSW_SP_FID_TYPE_8021D]	= &mlxsw_sp_fid_8021d_family,
 	[MLXSW_SP_FID_TYPE_RFID]	= &mlxsw_sp_fid_rfid_family,
@@ -1238,7 +1245,7 @@ int mlxsw_sp_fids_init(struct mlxsw_sp *mlxsw_sp)
 
 	for (i = 0; i < MLXSW_SP_FID_TYPE_MAX; i++) {
 		err = mlxsw_sp_fid_family_register(mlxsw_sp,
-						   mlxsw_sp_fid_family_arr[i]);
+						   mlxsw_sp->fid_family_arr[i]);
 
 		if (err)
 			goto err_fid_ops_register;