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io_uring/net: fail zc sendmsg when unsupported by socket 

The previous patch fails zerocopy send requests for protocols that don't
support it, do the same for zerocopy sendmsg.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/0854e7bb4c3d810a48ec8b5853e2f61af36a0467.1666346426.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2022-10-21 11:16:41 +01:00 committed by Jens Axboe
parent edf8143879
commit cc767e7c69
1 changed files with 2 additions and 0 deletions
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2
io_uring/net.c
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@ -1153,6 +1153,8 @@ int io_sendmsg_zc(struct io_kiocb *req, unsigned int issue_flags)
sock = sock_from_file(req->file); sock = sock_from_file(req->file);
if (unlikely(!sock)) if (unlikely(!sock))
return -ENOTSOCK; return -ENOTSOCK;
if (!test_bit(SOCK_SUPPORT_ZC, &sock->flags))
return -EOPNOTSUPP;
if (req_has_async_data(req)) { if (req_has_async_data(req)) {
kmsg = req->async_data; kmsg = req->async_data;