1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright (C) 2017 Intel Corporation. All rights reserved. 3 * Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved. 4 */ 5 6 #ifndef SPDK_BDEV_NULL_H 7 #define SPDK_BDEV_NULL_H 8 9 #include "spdk/stdinc.h" 10 11 typedef void (*spdk_delete_null_complete)(void *cb_arg, int bdeverrno); 12 13 struct spdk_bdev; 14 struct spdk_uuid; 15 16 struct spdk_null_bdev_opts { 17 const char *name; 18 const struct spdk_uuid *uuid; 19 uint64_t num_blocks; 20 uint32_t block_size; 21 uint32_t md_size; 22 bool md_interleave; 23 enum spdk_dif_type dif_type; 24 bool dif_is_head_of_md; 25 }; 26 27 int bdev_null_create(struct spdk_bdev **bdev, const struct spdk_null_bdev_opts *opts); 28 29 /** 30 * Delete null bdev. 31 * 32 * \param bdev_name Name of null bdev. 33 * \param cb_fn Function to call after deletion. 34 * \param cb_arg Argument to pass to cb_fn. 35 */ 36 void bdev_null_delete(const char *bdev_name, spdk_delete_null_complete cb_fn, 37 void *cb_arg); 38 /** 39 * Resize null bdev. 40 * 41 * \param bdev_name Name of null bdev. 42 * \param new_size_in_mb The new size in MiB for this bdev 43 */ 44 int bdev_null_resize(const char *bdev_name, const uint64_t new_size_in_mb); 45 46 #endif /* SPDK_BDEV_NULL_H */ 47