cef13315d0
New cache device must have all the same properties then the previously attached one. Keeping cache properties in cache priv also allows to add new cores to detached cache instance. Signed-off-by: Michal Mielewczyk <michal.mielewczyk@huawei.com> Signed-off-by: Rafal Stefanowski <rafal.stefanowski@huawei.com>
161 lines
3.3 KiB
C
161 lines
3.3 KiB
C
/*
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* Copyright(c) 2012-2022 Intel Corporation
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* Copyright(c) 2024 Huawei Technologies
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef __CAS_CACHE_H__
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#define __CAS_CACHE_H__
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#include "ocf/ocf.h"
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#include "ocf_env.h"
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#include <cas_ioctl_codes.h>
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#include "linux_kernel_version.h"
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#include "control.h"
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#include "layer_cache_management.h"
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#include "service_ui_ioctl.h"
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#include "volume/vol_blk_utils.h"
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#include "classifier.h"
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#include "context.h"
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#include <linux/kallsyms.h>
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#include "disk.h"
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#include "exp_obj.h"
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#define CAS_KERN_EMERG KERN_EMERG OCF_PREFIX_SHORT
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#define CAS_KERN_ALERT KERN_ALERT OCF_PREFIX_SHORT
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#define CAS_KERN_CRIT KERN_CRIT OCF_PREFIX_SHORT
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#define CAS_KERN_ERR KERN_ERR OCF_PREFIX_SHORT
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#define CAS_KERN_WARNING KERN_WARNING OCF_PREFIX_SHORT
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#define CAS_KERN_NOTICE KERN_NOTICE OCF_PREFIX_SHORT
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#define CAS_KERN_INFO KERN_INFO OCF_PREFIX_SHORT
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#define CAS_KERN_DEBUG KERN_DEBUG OCF_PREFIX_SHORT
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#ifndef SECTOR_SHIFT
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#define SECTOR_SHIFT 9
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#endif
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#ifndef SECTOR_SIZE
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#define SECTOR_SIZE (1<<SECTOR_SHIFT)
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#endif
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#define MAX_LINES_PER_IO 16
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/**
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* cache/core object types */
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enum {
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BLOCK_DEVICE_VOLUME = 1, /**< block device volume */
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/** \cond SKIP_IN_DOC */
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OBJECT_TYPE_MAX,
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/** \endcond */
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};
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struct cas_module {
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int disk_major;
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int next_minor;
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struct kmem_cache *disk_cache;
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struct kmem_cache *exp_obj_cache;
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};
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extern struct cas_module cas_module;
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struct cas_classifier;
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struct cache_priv {
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uint64_t core_id_bitmap[DIV_ROUND_UP(OCF_CORE_MAX, 8*sizeof(uint64_t))];
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struct cas_classifier *classifier;
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struct _cache_mngt_stop_context *stop_context;
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atomic_t flush_interrupt_enabled;
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ocf_queue_t mngt_queue;
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void *attach_context;
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bool cache_exp_obj_initialized;
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struct {
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struct queue_limits queue_limits;
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bool fua;
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bool flush;
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} device_properties;
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ocf_queue_t io_queues[];
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};
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extern ocf_ctx_t cas_ctx;
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static inline void cache_name_from_id(char *name, uint16_t id)
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{
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int result;
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result = snprintf(name, OCF_CACHE_NAME_SIZE, "cache%d", id);
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ENV_BUG_ON(result >= OCF_CACHE_NAME_SIZE);
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}
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static inline void core_name_from_id(char *name, uint16_t id)
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{
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int result;
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result = snprintf(name, OCF_CORE_NAME_SIZE, "core%d", id);
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ENV_BUG_ON(result >= OCF_CORE_NAME_SIZE);
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}
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static inline int cache_id_from_name(uint16_t *cache_id, const char *name)
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{
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const char *id_str;
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long res;
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int result;
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if (strnlen(name, OCF_CACHE_NAME_SIZE) < sizeof("cache") - 1)
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return -EINVAL;
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id_str = name + sizeof("cache") - 1;
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result = kstrtol(id_str, 10, &res);
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if (!result)
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*cache_id = res;
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return result;
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}
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static inline int core_id_from_name(uint16_t *core_id, const char *name)
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{
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const char *id_str;
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long res;
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int result;
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if (strnlen(name, OCF_CORE_NAME_SIZE) < sizeof("core") - 1)
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return -EINVAL;
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id_str = name + sizeof("core") - 1;
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result = kstrtol(id_str, 10, &res);
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if (!result)
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*core_id = res;
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return result;
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}
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static inline int mngt_get_cache_by_id(ocf_ctx_t ctx, uint16_t id,
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ocf_cache_t *cache)
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{
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char cache_name[OCF_CACHE_NAME_SIZE];
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cache_name_from_id(cache_name, id);
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return ocf_mngt_cache_get_by_name(ctx, cache_name,
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OCF_CACHE_NAME_SIZE, cache);
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}
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static inline int get_core_by_id(ocf_cache_t cache, uint16_t id,
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ocf_core_t *core)
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{
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char core_name[OCF_CORE_NAME_SIZE];
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core_name_from_id(core_name, id);
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return ocf_core_get_by_name(cache, core_name, OCF_CORE_NAME_SIZE, core);
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}
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#endif
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