mlxsw: spectrum_router: Introduce low-level ops and implement them for RALXX regs

In preparation for support of XM router implementation which uses
different registers to work with trees and FIB entries, introduce
a structure to hold low-level ops and implement tree manipulation
register ops.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
index 8418dc3ae967..c5c7346eb815 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
@@ -48,6 +48,17 @@ struct mlxsw_sp_router {
 	bool adj_discard_index_valid;
 	struct mlxsw_sp_router_nve_decap nve_decap_config;
 	struct mutex lock; /* Protects shared router resources */
+	/* One set of ops for each protocol: IPv4 and IPv6 */
+	const struct mlxsw_sp_router_ll_ops *proto_ll_ops[MLXSW_SP_L3_PROTO_MAX];
+};
+
+/* Low-level router ops. Basically this is to handle the different
+ * register sets to work with ordinary and XM trees and FIB entries.
+ */
+struct mlxsw_sp_router_ll_ops {
+	int (*ralta_write)(struct mlxsw_sp *mlxsw_sp, char *xralta_pl);
+	int (*ralst_write)(struct mlxsw_sp *mlxsw_sp, char *xralst_pl);
+	int (*raltb_write)(struct mlxsw_sp *mlxsw_sp, char *xraltb_pl);
 };
 
 struct mlxsw_sp_rif_ipip_lb;