mlxsw: spectrum_router: Enable IPv6 router

Before we add IPv6 constructs like traps and router interfaces, we first
need to enable IPv6 routing in the device.
Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
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>

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

@@ -3953,10 +3953,12 @@ MLXSW_ITEM32(reg, rgcr, pcp_rw, 0x18, 16, 2);
  */
 MLXSW_ITEM32(reg, rgcr, activity_dis, 0x20, 0, 8);
 
-static inline void mlxsw_reg_rgcr_pack(char *payload, bool ipv4_en)
+static inline void mlxsw_reg_rgcr_pack(char *payload, bool ipv4_en,
+				       bool ipv6_en)
 {
 	MLXSW_REG_ZERO(rgcr, payload);
 	mlxsw_reg_rgcr_ipv4_en_set(payload, ipv4_en);
+	mlxsw_reg_rgcr_ipv6_en_set(payload, ipv6_en);
 }
 
 /* RITR - Router Interface Table Register

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

@@ -3697,7 +3697,7 @@ static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp)
 		return -EIO;
 	max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS);
 
-	mlxsw_reg_rgcr_pack(rgcr_pl, true);
+	mlxsw_reg_rgcr_pack(rgcr_pl, true, true);
 	mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs);
 	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl);
 	if (err)
@@ -3709,7 +3709,7 @@ static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp)
 {
 	char rgcr_pl[MLXSW_REG_RGCR_LEN];
 
-	mlxsw_reg_rgcr_pack(rgcr_pl, false);
+	mlxsw_reg_rgcr_pack(rgcr_pl, false, false);
 	mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl);
 }