korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-09-22 04:31:58 +08:00
Code Issues Packages Projects Releases Wiki Activity

io_uring/net: use io_sr_msg for sendzc

Browse Source 
Reuse struct io_sr_msg for zerocopy sends, which is handy. There is
only one zerocopy specific field, namely .notif, and we have enough
space for it.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/408c5b1b2d8869e1a12da5f5a78ed72cac112149.1662639236.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2022-09-08 13:20:34 +01:00 committed by Jens Axboe
parent 0b048557db
commit ac9e5784bb
1 changed files with 5 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
io_uring/net.c
View File

@ -59,15 +59,7 @@ struct io_sr_msg {
unsigned done_io;
unsigned msg_flags;
u16 flags;
};
struct io_sendzc {
struct file *file;
void __user *buf;
unsigned len;
unsigned done_io;
unsigned msg_flags;
u16 flags;
/* used only for sendzc */
u16 addr_len;
void __user *addr;
struct io_kiocb *notif;
@ -190,7 +182,7 @@ static int io_sendmsg_copy_hdr(struct io_kiocb *req,
int io_sendzc_prep_async(struct io_kiocb *req)
{
struct io_sendzc *zc = io_kiocb_to_cmd(req, struct io_sendzc);
struct io_sr_msg *zc = io_kiocb_to_cmd(req, struct io_sr_msg);
struct io_async_msghdr *io;
int ret;
@ -890,7 +882,7 @@ out_free:
void io_sendzc_cleanup(struct io_kiocb *req)
{
struct io_sendzc *zc = io_kiocb_to_cmd(req, struct io_sendzc);
struct io_sr_msg *zc = io_kiocb_to_cmd(req, struct io_sr_msg);
zc->notif->flags |= REQ_F_CQE_SKIP;
io_notif_flush(zc->notif);
@ -899,7 +891,7 @@ void io_sendzc_cleanup(struct io_kiocb *req)
int io_sendzc_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
struct io_sendzc *zc = io_kiocb_to_cmd(req, struct io_sendzc);
struct io_sr_msg *zc = io_kiocb_to_cmd(req, struct io_sr_msg);
struct io_ring_ctx *ctx = req->ctx;
struct io_kiocb *notif;
@ -1009,7 +1001,7 @@ static int io_sg_from_iter(struct sock *sk, struct sk_buff *skb,
int io_sendzc(struct io_kiocb *req, unsigned int issue_flags)
{
struct sockaddr_storage __address, *addr = NULL;
struct io_sendzc *zc = io_kiocb_to_cmd(req, struct io_sendzc);
struct io_sr_msg *zc = io_kiocb_to_cmd(req, struct io_sr_msg);
struct msghdr msg;
struct iovec iov;
struct socket *sock;