From: Pavel Begunkov <[email protected]>
To: [email protected]
Cc: Jens Axboe <[email protected]>, [email protected]
Subject: [PATCH for-next 1/1] io_uring/net: fix non-zc send with address
Date: Thu, 29 Sep 2022 01:03:29 +0100 [thread overview]
Message-ID: <176ced5e8568aa5d300ca899b7f05b303ebc49fd.1664409532.git.asml.silence@gmail.com> (raw)
We're currently ignoring the dest address with non-zerocopy send because
even though we copy it from the userspace shortly after ->msg_name gets
zeroed. Move msghdr init earlier.
Fixes: 516e82f0e043a ("io_uring/net: support non-zerocopy sendto")
Signed-off-by: Pavel Begunkov <[email protected]>
---
io_uring/net.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/io_uring/net.c b/io_uring/net.c
index 6b69eff6887e..4f671e6c8f3e 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -333,6 +333,12 @@ int io_send(struct io_kiocb *req, unsigned int issue_flags)
int min_ret = 0;
int ret;
+ msg.msg_name = NULL;
+ msg.msg_control = NULL;
+ msg.msg_controllen = 0;
+ msg.msg_namelen = 0;
+ msg.msg_ubuf = NULL;
+
if (sr->addr) {
if (req_has_async_data(req)) {
struct io_async_msghdr *io = req->async_data;
@@ -359,12 +365,6 @@ int io_send(struct io_kiocb *req, unsigned int issue_flags)
if (unlikely(ret))
return ret;
- msg.msg_name = NULL;
- msg.msg_control = NULL;
- msg.msg_controllen = 0;
- msg.msg_namelen = 0;
- msg.msg_ubuf = NULL;
-
flags = sr->msg_flags;
if (issue_flags & IO_URING_F_NONBLOCK)
flags |= MSG_DONTWAIT;
--
2.37.2
next reply other threads:[~2022-09-29 0:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-29 0:03 Pavel Begunkov [this message]
2022-09-29 1:29 ` [PATCH for-next 1/1] io_uring/net: fix non-zc send with address Jens Axboe
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