/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * RDMA Network Block Driver * * Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved. * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved. * Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved. */ #ifndef RNBD_SRV_DEV_H #define RNBD_SRV_DEV_H #include <linux/fs.h> #include "rnbd-proto.h" struct rnbd_dev { struct block_device *bdev; fmode_t blk_open_flags; }; /** * rnbd_dev_open() - Open a device * @path: path to open * @flags: open flags */ struct rnbd_dev *rnbd_dev_open(const char *path, fmode_t flags); /** * rnbd_dev_close() - Close a device */ void rnbd_dev_close(struct rnbd_dev *dev); void rnbd_endio(void *priv, int error); static inline int rnbd_dev_get_max_segs(const struct rnbd_dev *dev) { return queue_max_segments(bdev_get_queue(dev->bdev)); } static inline int rnbd_dev_get_max_hw_sects(const struct rnbd_dev *dev) { return queue_max_hw_sectors(bdev_get_queue(dev->bdev)); } static inline int rnbd_dev_get_secure_discard(const struct rnbd_dev *dev) { return bdev_max_secure_erase_sectors(dev->bdev); } static inline int rnbd_dev_get_max_discard_sects(const struct rnbd_dev *dev) { return bdev_max_discard_sectors(dev->bdev); } static inline int rnbd_dev_get_discard_granularity(const struct rnbd_dev *dev) { return bdev_get_queue(dev->bdev)->limits.discard_granularity; } static inline int rnbd_dev_get_discard_alignment(const struct rnbd_dev *dev) { return bdev_discard_alignment(dev->bdev); } #endif /* RNBD_SRV_DEV_H */