netdev - Re: [PATCH 4/5] io_uring: Introduce IORING_OP

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Date: Fri, 31 May 2024 16:30:54 -0600
From: Jens Axboe <axboe@...nel.dk>
To: Gabriel Krisman Bertazi <krisman@...e.de>
Cc: io-uring@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 4/5] io_uring: Introduce IORING_OP_BIND

On 5/31/24 3:12 PM, Gabriel Krisman Bertazi wrote:
> +int io_bind_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
> +{
> +	struct io_bind *bind = io_kiocb_to_cmd(req, struct io_bind);
> +	struct sockaddr __user *uaddr;
> +	struct io_async_msghdr *io;
> +	int ret;
> +
> +	if (sqe->len || sqe->buf_index || sqe->rw_flags || sqe->splice_fd_in)
> +		return -EINVAL;
> +
> +	uaddr = u64_to_user_ptr(READ_ONCE(sqe->addr));
> +	bind->addr_len =  READ_ONCE(sqe->addr2);
> +
> +	io = io_msg_alloc_async(req);
> +	if (unlikely(!io))
> +		return -ENOMEM;
> +
> +	ret = move_addr_to_kernel(uaddr, bind->addr_len, &io->addr);
> +	if (ret)
> +		io_req_msg_cleanup(req, 0);
> +	return ret;
> +}

As mentioned in the other patch, I think this can just be:

	return move_addr_to_kernel(uaddr, bind->addr_len, &io->addr);
}

and have normal cleanup take care of it.

> +int io_bind(struct io_kiocb *req, unsigned int issue_flags)
> +{
> +	struct io_bind *bind = io_kiocb_to_cmd(req, struct io_bind);
> +	struct io_async_msghdr *io = req->async_data;
> +	int ret;
> +
> +	ret = __sys_bind_socket(sock_from_file(req->file),  &io->addr, bind->addr_len);
> +	if (ret < 0)
> +		req_set_fail(req);
> +	io_req_set_res(req, ret, 0);
> +
> +	return 0;
> +}

Kill the empty line before return.

Outside of those minor nits, patch looks good!

-- 
Jens Axboe