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io_uring/net: reject SEND_VECTORIZED when unsupported

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IORING_SEND_VECTORIZED with registered buffers is not implemented but
could be. Don't silently ignore the flag in this case but reject it with
an error. It only affects sendzc as normal sends don't support
registered buffers.

Fixes: 6f02527729 ("io_uring/net: Allow to do vectorized send")
Cc: stable@vger.kernel.org
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2026-03-02 14:32:04 +00:00 • committed by Jens Axboe
parent 0ed2e8bf61
commit c36e28becd
1 changed files with 2 additions and 0 deletions
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2
io_uring/net.c
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@ -375,6 +375,8 @@ static int io_send_setup(struct io_kiocb *req, const struct io_uring_sqe *sqe)
kmsg->msg.msg_namelen = addr_len;
}
if (sr->flags & IORING_RECVSEND_FIXED_BUF) {
if (sr->flags & IORING_SEND_VECTORIZED)
return -EINVAL;
req->flags |= REQ_F_IMPORT_BUFFER;
return 0;
}