86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/*
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* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
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* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
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*/
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#ifndef RXE_POOL_H
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#define RXE_POOL_H
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enum rxe_elem_type {
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RXE_TYPE_UC,
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RXE_TYPE_PD,
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RXE_TYPE_AH,
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RXE_TYPE_SRQ,
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RXE_TYPE_QP,
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RXE_TYPE_CQ,
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RXE_TYPE_MR,
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RXE_TYPE_MW,
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RXE_NUM_TYPES, /* keep me last */
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};
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struct rxe_pool_elem {
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struct rxe_pool *pool;
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void *obj;
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struct kref ref_cnt;
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struct list_head list;
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struct completion complete;
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u32 index;
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};
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struct rxe_pool {
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struct rxe_dev *rxe;
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const char *name;
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void (*cleanup)(struct rxe_pool_elem *elem);
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enum rxe_elem_type type;
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unsigned int max_elem;
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atomic_t num_elem;
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size_t elem_size;
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size_t elem_offset;
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struct xarray xa;
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struct xa_limit limit;
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u32 next;
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};
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/* initialize a pool of objects with given limit on
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* number of elements. gets parameters from rxe_type_info
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* pool elements will be allocated out of a slab cache
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*/
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void rxe_pool_init(struct rxe_dev *rxe, struct rxe_pool *pool,
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enum rxe_elem_type type);
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/* free resources from object pool */
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void rxe_pool_cleanup(struct rxe_pool *pool);
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/* allocate an object from pool */
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void *rxe_alloc(struct rxe_pool *pool);
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/* connect already allocated object to pool */
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int __rxe_add_to_pool(struct rxe_pool *pool, struct rxe_pool_elem *elem,
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bool sleepable);
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#define rxe_add_to_pool(pool, obj) __rxe_add_to_pool(pool, &(obj)->elem, true)
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#define rxe_add_to_pool_ah(pool, obj, sleepable) __rxe_add_to_pool(pool, \
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&(obj)->elem, sleepable)
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/* lookup an indexed object from index. takes a reference on object */
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void *rxe_pool_get_index(struct rxe_pool *pool, u32 index);
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int __rxe_get(struct rxe_pool_elem *elem);
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#define rxe_get(obj) __rxe_get(&(obj)->elem)
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int __rxe_put(struct rxe_pool_elem *elem);
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#define rxe_put(obj) __rxe_put(&(obj)->elem)
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int __rxe_cleanup(struct rxe_pool_elem *elem, bool sleepable);
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#define rxe_cleanup(obj) __rxe_cleanup(&(obj)->elem, true)
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#define rxe_cleanup_ah(obj, sleepable) __rxe_cleanup(&(obj)->elem, sleepable)
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#define rxe_read(obj) kref_read(&(obj)->elem.ref_cnt)
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void __rxe_finalize(struct rxe_pool_elem *elem);
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#define rxe_finalize(obj) __rxe_finalize(&(obj)->elem)
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#endif /* RXE_POOL_H */
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