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usr
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src
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linux-headers-6.8.0-88
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include
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linux
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raid_class.h
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/* SPDX-License-Identifier: GPL-2.0-only */ /* * raid_class.h - a generic raid visualisation class * * Copyright (c) 2005 - James Bottomley <James.Bottomley@steeleye.com> */ #include <linux/transport_class.h> struct raid_template { struct transport_container raid_attrs; }; struct raid_function_template { const void *cookie; int (*is_raid)(struct device *); void (*get_resync)(struct device *); void (*get_state)(struct device *); }; enum raid_state { RAID_STATE_UNKNOWN = 0, RAID_STATE_ACTIVE, RAID_STATE_DEGRADED, RAID_STATE_RESYNCING, RAID_STATE_OFFLINE, }; enum raid_level { RAID_LEVEL_UNKNOWN = 0, RAID_LEVEL_LINEAR, RAID_LEVEL_0, RAID_LEVEL_1, RAID_LEVEL_10, RAID_LEVEL_1E, RAID_LEVEL_3, RAID_LEVEL_4, RAID_LEVEL_5, RAID_LEVEL_50, RAID_LEVEL_6, RAID_LEVEL_JBOD, }; struct raid_data { struct list_head component_list; int component_count; enum raid_level level; enum raid_state state; int resync; }; /* resync complete goes from 0 to this */ #define RAID_MAX_RESYNC (10000) #define DEFINE_RAID_ATTRIBUTE(type, attr) \ static inline void \ raid_set_##attr(struct raid_template *r, struct device *dev, type value) { \ struct device *device = \ attribute_container_find_class_device(&r->raid_attrs.ac, dev);\ struct raid_data *rd; \ BUG_ON(!device); \ rd = dev_get_drvdata(device); \ rd->attr = value; \ } \ static inline type \ raid_get_##attr(struct raid_template *r, struct device *dev) { \ struct device *device = \ attribute_container_find_class_device(&r->raid_attrs.ac, dev);\ struct raid_data *rd; \ BUG_ON(!device); \ rd = dev_get_drvdata(device); \ return rd->attr; \ } DEFINE_RAID_ATTRIBUTE(enum raid_level, level) DEFINE_RAID_ATTRIBUTE(int, resync) DEFINE_RAID_ATTRIBUTE(enum raid_state, state) struct raid_template *raid_class_attach(struct raid_function_template *); void raid_class_release(struct raid_template *);