1 // SPDX-License-Identifier: GPL-2.0
6 #include <linux/nospec.h>
10 #define IO_NOTIF_UBUF_FLAGS (SKBFL_ZEROCOPY_FRAG | SKBFL_DONT_ORPHAN)
11 #define IO_NOTIF_SPLICE_BATCH 32
13 struct io_notif_data {
15 struct ubuf_info uarg;
17 struct io_notif_data *next;
18 struct io_notif_data *head;
20 unsigned account_pages;
26 struct io_kiocb *io_alloc_notif(struct io_ring_ctx *ctx);
27 void io_tx_ubuf_complete(struct sk_buff *skb, struct ubuf_info *uarg,
30 static inline struct io_notif_data *io_notif_to_data(struct io_kiocb *notif)
32 return io_kiocb_to_cmd(notif, struct io_notif_data);
35 static inline void io_notif_flush(struct io_kiocb *notif)
36 __must_hold(¬if->ctx->uring_lock)
38 struct io_notif_data *nd = io_notif_to_data(notif);
40 io_tx_ubuf_complete(NULL, &nd->uarg, true);
43 static inline int io_notif_account_mem(struct io_kiocb *notif, unsigned len)
45 struct io_ring_ctx *ctx = notif->ctx;
46 struct io_notif_data *nd = io_notif_to_data(notif);
47 unsigned nr_pages = (len >> PAGE_SHIFT) + 2;
51 ret = __io_account_mem(ctx->user, nr_pages);
54 nd->account_pages += nr_pages;