[patch net-next 2/3] mlxsw: spectrum_router: Pass FIB node to LPM tree unlink function

[Jiri Pirko]

From: Ido Schimmel <ido...@mellanox.com>

Next patch will try to optimize the LPM tree and make sure only used
prefix lengths are present, to avoid unnecessary look-ups.

Pass the currently removed FIB node to the unlinking function as its
associated prefix length is a potential candidate for removal from the
tree.

Signed-off-by: Ido Schimmel <ido...@mellanox.com>
Signed-off-by: Jiri Pirko <j...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 634e427fb80e..a590c0ab7524 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -4193,10 +4193,10 @@ mlxsw_sp_fib_node_entry_is_first(const struct 
mlxsw_sp_fib_node *fib_node,
 }
 
 static int mlxsw_sp_fib_lpm_tree_link(struct mlxsw_sp *mlxsw_sp,
-                                     struct mlxsw_sp_fib *fib,
                                      struct mlxsw_sp_fib_node *fib_node)
 {
        struct mlxsw_sp_prefix_usage req_prefix_usage = {{ 0 } };
+       struct mlxsw_sp_fib *fib = fib_node->fib;
        struct mlxsw_sp_lpm_tree *lpm_tree;
        int err;
 
@@ -4230,8 +4230,10 @@ static int mlxsw_sp_fib_lpm_tree_link(struct mlxsw_sp 
*mlxsw_sp,
 }
 
 static void mlxsw_sp_fib_lpm_tree_unlink(struct mlxsw_sp *mlxsw_sp,
-                                        struct mlxsw_sp_fib *fib)
+                                        struct mlxsw_sp_fib_node *fib_node)
 {
+       struct mlxsw_sp_fib *fib = fib_node->fib;
+
        if (!list_is_singular(&fib->node_list))
                return;
        /* Last node is being unlinked from the FIB. Unbind the
@@ -4271,7 +4273,7 @@ static int mlxsw_sp_fib_node_init(struct mlxsw_sp 
*mlxsw_sp,
                return err;
        fib_node->fib = fib;
 
-       err = mlxsw_sp_fib_lpm_tree_link(mlxsw_sp, fib, fib_node);
+       err = mlxsw_sp_fib_lpm_tree_link(mlxsw_sp, fib_node);
        if (err)
                goto err_fib_lpm_tree_link;
 
@@ -4291,7 +4293,7 @@ static void mlxsw_sp_fib_node_fini(struct mlxsw_sp 
*mlxsw_sp,
        struct mlxsw_sp_fib *fib = fib_node->fib;
 
        mlxsw_sp_fib_node_prefix_dec(fib_node);
-       mlxsw_sp_fib_lpm_tree_unlink(mlxsw_sp, fib);
+       mlxsw_sp_fib_lpm_tree_unlink(mlxsw_sp, fib_node);
        fib_node->fib = NULL;
        mlxsw_sp_fib_node_remove(fib, fib_node);
 }
-- 
2.14.3