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98f37634b1
Implement BPF struct ops registration. It's registered off the BPF path, and can be removed by BPF as well as io_uring. To protect it, introduce a global lock synchronising registration. ctx->uring_lock can be nested under it. ctx->bpf_ops is write protected by both locks and so it's safe to read it under either of them. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://patch.msgid.link/1f46bffd76008de49cbafa2ad77d348810a4f69e.1772109579.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
29 lines
503 B
C
29 lines
503 B
C
// SPDX-License-Identifier: GPL-2.0
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#ifndef IOU_BPF_OPS_H
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#define IOU_BPF_OPS_H
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#include <linux/io_uring_types.h>
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enum {
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IOU_REGION_MEM,
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IOU_REGION_CQ,
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IOU_REGION_SQ,
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};
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struct io_uring_bpf_ops {
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int (*loop_step)(struct io_ring_ctx *ctx, struct iou_loop_params *lp);
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__u32 ring_fd;
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void *priv;
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};
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#ifdef CONFIG_IO_URING_BPF_OPS
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void io_unregister_bpf_ops(struct io_ring_ctx *ctx);
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#else
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static inline void io_unregister_bpf_ops(struct io_ring_ctx *ctx)
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{
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}
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#endif
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#endif /* IOU_BPF_OPS_H */
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