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_busy_loop(struct io_ring_ctx *ctx, struct io_wait_queue *iowq);
21 int io_napi_sqpoll_busy_poll(struct io_ring_ctx *ctx);
23 static inline bool io_napi(struct io_ring_ctx *ctx)
25 return !list_empty(&ctx->napi_list);
28 static inline void io_napi_busy_loop(struct io_ring_ctx *ctx,
29 struct io_wait_queue *iowq)
33 __io_napi_busy_loop(ctx, iowq);
37 * io_napi_add() - Add napi id to the busy poll list
38 * @req: pointer to io_kiocb request
40 * Add the napi id of the socket to the napi busy poll list and hash table.
42 static inline void io_napi_add(struct io_kiocb *req)
44 struct io_ring_ctx *ctx = req->ctx;
47 if (!READ_ONCE(ctx->napi_enabled))
50 sock = sock_from_file(req->file);
52 __io_napi_add(ctx, sock);
57 static inline void io_napi_init(struct io_ring_ctx *ctx)
60 static inline void io_napi_free(struct io_ring_ctx *ctx)
63 static inline int io_register_napi(struct io_ring_ctx *ctx, void __user *arg)
67 static inline int io_unregister_napi(struct io_ring_ctx *ctx, void __user *arg)
71 static inline bool io_napi(struct io_ring_ctx *ctx)
75 static inline void io_napi_add(struct io_kiocb *req)
78 static inline void io_napi_busy_loop(struct io_ring_ctx *ctx,
79 struct io_wait_queue *iowq)
82 static inline int io_napi_sqpoll_busy_poll(struct io_ring_ctx *ctx)
86 #endif /* CONFIG_NET_RX_BUSY_POLL */