1 /* SPDX-License-Identifier: GPL-2.0 */
6 #include <linux/kernel.h>
7 #include <linux/io_uring.h>
8 #include <net/busy_poll.h>
10 #ifdef CONFIG_NET_RX_BUSY_POLL
12 void io_napi_init(struct io_ring_ctx *ctx);
13 void io_napi_free(struct io_ring_ctx *ctx);
15 int io_register_napi(struct io_ring_ctx *ctx, void __user *arg);
16 int io_unregister_napi(struct io_ring_ctx *ctx, void __user *arg);
18 void __io_napi_add(struct io_ring_ctx *ctx, struct socket *sock);
20 void __io_napi_adjust_timeout(struct io_ring_ctx *ctx,
21 struct io_wait_queue *iowq, struct timespec64 *ts);
22 void __io_napi_busy_loop(struct io_ring_ctx *ctx, struct io_wait_queue *iowq);
23 int io_napi_sqpoll_busy_poll(struct io_ring_ctx *ctx);
25 static inline bool io_napi(struct io_ring_ctx *ctx)
27 return !list_empty(&ctx->napi_list);
30 static inline void io_napi_adjust_timeout(struct io_ring_ctx *ctx,
31 struct io_wait_queue *iowq,
32 struct timespec64 *ts)
36 __io_napi_adjust_timeout(ctx, iowq, ts);
39 static inline void io_napi_busy_loop(struct io_ring_ctx *ctx,
40 struct io_wait_queue *iowq)
44 __io_napi_busy_loop(ctx, iowq);
48 * io_napi_add() - Add napi id to the busy poll list
49 * @req: pointer to io_kiocb request
51 * Add the napi id of the socket to the napi busy poll list and hash table.
53 static inline void io_napi_add(struct io_kiocb *req)
55 struct io_ring_ctx *ctx = req->ctx;
58 if (!READ_ONCE(ctx->napi_busy_poll_to))
61 sock = sock_from_file(req->file);
63 __io_napi_add(ctx, sock);
68 static inline void io_napi_init(struct io_ring_ctx *ctx)
71 static inline void io_napi_free(struct io_ring_ctx *ctx)
74 static inline int io_register_napi(struct io_ring_ctx *ctx, void __user *arg)
78 static inline int io_unregister_napi(struct io_ring_ctx *ctx, void __user *arg)
82 static inline bool io_napi(struct io_ring_ctx *ctx)
86 static inline void io_napi_add(struct io_kiocb *req)
89 static inline void io_napi_adjust_timeout(struct io_ring_ctx *ctx,
90 struct io_wait_queue *iowq,
91 struct timespec64 *ts)
94 static inline void io_napi_busy_loop(struct io_ring_ctx *ctx,
95 struct io_wait_queue *iowq)
98 static inline int io_napi_sqpoll_busy_poll(struct io_ring_ctx *ctx)
102 #endif /* CONFIG_NET_RX_BUSY_POLL */