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io_uring/net: don't lose partial send/recv on fail

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Just as with rw, partial send/recv may end up in
io_req_complete_failed() and loose the result, make sure we return the
number of bytes processed.

Cc: stable@vger.kernel.org
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/a4ff95897b5419356fca9ea55db91ac15b2975f9.1663668091.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2022-09-21 12:17:48 +01:00 committed by Jens Axboe
parent 47b4c68660
commit 7e6b638ed5
3 changed files with 16 additions and 0 deletions
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10
io_uring/net.c
View file

@ -1093,6 +1093,16 @@ int io_sendzc(struct io_kiocb *req, unsigned int issue_flags)
return IOU_OK;
}
void io_sendrecv_fail(struct io_kiocb *req)
{
struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg);
int res = req->cqe.res;
if (req->flags & REQ_F_PARTIAL_IO)
res = sr->done_io;
io_req_set_res(req, res, req->cqe.flags);
}
int io_accept_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
struct io_accept *accept = io_kiocb_to_cmd(req, struct io_accept);

2
io_uring/net.h
View file

@ -43,6 +43,8 @@ int io_recvmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
int io_recvmsg(struct io_kiocb *req, unsigned int issue_flags);
int io_recv(struct io_kiocb *req, unsigned int issue_flags);
void io_sendrecv_fail(struct io_kiocb *req);
int io_accept_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
int io_accept(struct io_kiocb *req, unsigned int issue_flags);

4
io_uring/opdef.c
View file

@ -158,6 +158,7 @@ const struct io_op_def io_op_defs[] = {
.issue = io_sendmsg,
.prep_async = io_sendmsg_prep_async,
.cleanup = io_sendmsg_recvmsg_cleanup,
.fail = io_sendrecv_fail,
#else
.prep = io_eopnotsupp_prep,
#endif
@ -176,6 +177,7 @@ const struct io_op_def io_op_defs[] = {
.issue = io_recvmsg,
.prep_async = io_recvmsg_prep_async,
.cleanup = io_sendmsg_recvmsg_cleanup,
.fail = io_sendrecv_fail,
#else
.prep = io_eopnotsupp_prep,
#endif
@ -318,6 +320,7 @@ const struct io_op_def io_op_defs[] = {
#if defined(CONFIG_NET)
.prep = io_sendmsg_prep,
.issue = io_send,
.fail = io_sendrecv_fail,
#else
.prep = io_eopnotsupp_prep,
#endif
@ -333,6 +336,7 @@ const struct io_op_def io_op_defs[] = {
#if defined(CONFIG_NET)
.prep = io_recvmsg_prep,
.issue = io_recv,
.fail = io_sendrecv_fail,
#else
.prep = io_eopnotsupp_prep,
#endif