62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
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*
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* Copyright (c) 2025, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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*/
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#ifndef RDMA_CORE_FRMR_POOLS_H
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#define RDMA_CORE_FRMR_POOLS_H
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#include <rdma/frmr_pools.h>
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#include <linux/rbtree_types.h>
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#include <linux/spinlock_types.h>
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#include <linux/types.h>
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#include <asm/page.h>
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#include <linux/workqueue.h>
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#define NUM_HANDLES_PER_PAGE \
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((PAGE_SIZE - sizeof(struct list_head)) / sizeof(u32))
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struct frmr_handles_page {
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struct list_head list;
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u32 handles[NUM_HANDLES_PER_PAGE];
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};
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/* FRMR queue holds a list of frmr_handles_page.
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* num_pages: number of pages in the queue.
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* ci: current index in the handles array across all pages.
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*/
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struct frmr_queue {
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struct list_head pages_list;
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u32 num_pages;
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unsigned long ci;
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};
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struct ib_frmr_pool {
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struct rb_node node;
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struct ib_frmr_key key; /* Pool key */
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/* Protect access to the queue */
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spinlock_t lock;
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struct frmr_queue queue;
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struct frmr_queue inactive_queue;
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struct delayed_work aging_work;
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struct ib_device *device;
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u32 max_in_use;
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u32 in_use;
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u32 pinned_handles;
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};
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struct ib_frmr_pools {
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struct rb_root rb_root;
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rwlock_t rb_lock;
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const struct ib_frmr_pool_ops *pool_ops;
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struct workqueue_struct *aging_wq;
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};
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int ib_frmr_pools_set_pinned(struct ib_device *device, struct ib_frmr_key *key,
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u32 pinned_handles);
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#endif /* RDMA_CORE_FRMR_POOLS_H */
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