mlx5/mlx5_lib/mlx5_gid.c

32  * $FreeBSD: stable/11/sys/dev/mlx5/mlx5_lib/mlx5_gid.c 341572 2018-12-05 14:11:20Z slavash $
36 #include <dev/mlx5/driver.h>
37 #include <dev/mlx5/mlx5_core/mlx5_core.h>
38 #include <dev/mlx5/mlx5_lib/mlx5.h>
40 void mlx5_init_reserved_gids(struct mlx5_core_dev *dev)
42 	unsigned int tblsz = MLX5_CAP_ROCE(dev, roce_address_table_size);
44 	ida_init(&dev->roce.reserved_gids.ida);
45 	dev->roce.reserved_gids.start = tblsz;
46 	dev->roce.reserved_gids.count = 0;
49 void mlx5_cleanup_reserved_gids(struct mlx5_core_dev *dev)
51 	WARN_ON(!ida_is_empty(&dev->roce.reserved_gids.ida));
52 	dev->roce.reserved_gids.start = 0;
53 	dev->roce.reserved_gids.count = 0;
54 	ida_destroy(&dev->roce.reserved_gids.ida);
57 int mlx5_core_reserve_gids(struct mlx5_core_dev *dev, unsigned int count)
59 	if (test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state)) {
60 		mlx5_core_err(dev, "Cannot reserve GIDs when interfaces are up\n");
63 	if (dev->roce.reserved_gids.start < count) {
64 		mlx5_core_warn(dev, "GID table exhausted attempting to reserve %d more GIDs\n",
68 	if (dev->roce.reserved_gids.count + count > MLX5_MAX_RESERVED_GIDS) {
69 		mlx5_core_warn(dev, "Unable to reserve %d more GIDs\n", count);
73 	dev->roce.reserved_gids.start -= count;
74 	dev->roce.reserved_gids.count += count;
75 	mlx5_core_dbg(dev, "Reserved %u GIDs starting at %u\n",
76 		      dev->roce.reserved_gids.count,
77 		      dev->roce.reserved_gids.start);
81 void mlx5_core_unreserve_gids(struct mlx5_core_dev *dev, unsigned int count)
83 	WARN(test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state), "Unreserving GIDs when interfaces are up");
84 	WARN(count > dev->roce.reserved_gids.count, "Unreserving %u GIDs when only %u reserved",
85 	     count, dev->roce.reserved_gids.count);
87 	dev->roce.reserved_gids.start += count;
88 	dev->roce.reserved_gids.count -= count;
89 	mlx5_core_dbg(dev, "%u GIDs starting at %u left reserved\n",
90 		      dev->roce.reserved_gids.count,
91 		      dev->roce.reserved_gids.start);
94 int mlx5_core_reserved_gid_alloc(struct mlx5_core_dev *dev, int *gid_index)
96 	int end = dev->roce.reserved_gids.start +
97 		  dev->roce.reserved_gids.count;
100 	index = ida_simple_get(&dev->roce.reserved_gids.ida,
101 			       dev->roce.reserved_gids.start, end,
106 	mlx5_core_dbg(dev, "Allocating reserved GID %u\n", index);
111 void mlx5_core_reserved_gid_free(struct mlx5_core_dev *dev, int gid_index)
113 	mlx5_core_dbg(dev, "Freeing reserved GID %u\n", gid_index);
114 	ida_simple_remove(&dev->roce.reserved_gids.ida, gid_index);
117 unsigned int mlx5_core_reserved_gids_count(struct mlx5_core_dev *dev)
119 	return dev->roce.reserved_gids.count;
123 int mlx5_core_roce_gid_set(struct mlx5_core_dev *dev, unsigned int index,
137 	if (MLX5_CAP_GEN(dev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
154 	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));