1 /*- 2 * BSD LICENSE 3 * 4 * Copyright (c) Intel Corporation. All rights reserved. 5 * Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef SPDK_BDEV_NULL_H 35 #define SPDK_BDEV_NULL_H 36 37 #include "spdk/stdinc.h" 38 39 typedef void (*spdk_delete_null_complete)(void *cb_arg, int bdeverrno); 40 41 struct spdk_bdev; 42 struct spdk_uuid; 43 44 struct spdk_null_bdev_opts { 45 const char *name; 46 const struct spdk_uuid *uuid; 47 uint64_t num_blocks; 48 uint32_t block_size; 49 uint32_t md_size; 50 bool md_interleave; 51 enum spdk_dif_type dif_type; 52 bool dif_is_head_of_md; 53 }; 54 55 int bdev_null_create(struct spdk_bdev **bdev, const struct spdk_null_bdev_opts *opts); 56 57 /** 58 * Delete null bdev. 59 * 60 * \param bdev Pointer to null bdev. 61 * \param cb_fn Function to call after deletion. 62 * \param cb_arg Argument to pass to cb_fn. 63 */ 64 void bdev_null_delete(struct spdk_bdev *bdev, spdk_delete_null_complete cb_fn, 65 void *cb_arg); 66 67 #endif /* SPDK_BDEV_NULL_H */ 68