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io_uring/net: fix non-zc send with address

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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: 516e82f0e0 ("io_uring/net: support non-zerocopy sendto")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/176ced5e8568aa5d300ca899b7f05b303ebc49fd.1664409532.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2022-09-29 01:03:29 +01:00 committed by Jens Axboe
parent 6ae91ac9a6
commit 04360d3e05
1 changed files with 6 additions and 6 deletions
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12
io_uring/net.c
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@ -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;