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io_uring/net: extract io_send_select_buffer()

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Extract a helper out of io_send() for provided buffer selection to
improve readability as it has grown to take too many lines.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
Link: https://lore.kernel.org/r/26a769cdabd61af7f40c5d88a22469c5ad071796.1738087204.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2025-01-28 20:56:14 +00:00 committed by Jens Axboe
parent 2b350f756b
commit 86e62354ee
1 changed files with 50 additions and 37 deletions
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53
io_uring/net.c
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@ -566,29 +566,12 @@ int io_sendmsg(struct io_kiocb *req, unsigned int issue_flags)
return IOU_OK;
}
int io_send(struct io_kiocb *req, unsigned int issue_flags)
static int io_send_select_buffer(struct io_kiocb *req, unsigned int issue_flags,
struct io_async_msghdr *kmsg)
{
struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg);
struct io_async_msghdr *kmsg = req->async_data;
struct socket *sock;
unsigned flags;
int min_ret = 0;
int ret;
sock = sock_from_file(req->file);
if (unlikely(!sock))
return -ENOTSOCK;
if (!(req->flags & REQ_F_POLLED) &&
(sr->flags & IORING_RECVSEND_POLL_FIRST))
return -EAGAIN;
flags = sr->msg_flags;
if (issue_flags & IO_URING_F_NONBLOCK)
flags |= MSG_DONTWAIT;
retry_bundle:
if (io_do_buffer_select(req)) {
struct buf_sel_arg arg = {
.iovs = &kmsg->fast_iov,
.max_len = min_not_zero(sr->len, INT_MAX),
@ -627,6 +610,36 @@ retry_bundle:
iov_iter_init(&kmsg->msg.msg_iter, ITER_SOURCE,
arg.iovs, ret, arg.out_len);
}
return 0;
}
int io_send(struct io_kiocb *req, unsigned int issue_flags)
{
struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg);
struct io_async_msghdr *kmsg = req->async_data;
struct socket *sock;
unsigned flags;
int min_ret = 0;
int ret;
sock = sock_from_file(req->file);
if (unlikely(!sock))
return -ENOTSOCK;
if (!(req->flags & REQ_F_POLLED) &&
(sr->flags & IORING_RECVSEND_POLL_FIRST))
return -EAGAIN;
flags = sr->msg_flags;
if (issue_flags & IO_URING_F_NONBLOCK)
flags |= MSG_DONTWAIT;
retry_bundle:
if (io_do_buffer_select(req)) {
ret = io_send_select_buffer(req, issue_flags, kmsg);
if (ret)
return ret;
}
/*