[PATCH v3] nvme-tcp: fix connect failure on receiving partial ICResp PDU

[Keith Busch]

On Fri, Jan 24, 2025 at 11:03:41AM -0700, Caleb Sander Mateos wrote:
> +	msg.msg_flags = MSG_WAITALL;
>  	ret = kernel_recvmsg(queue->sock, &msg, &iov, 1,
>  			iov.iov_len, msg.msg_flags);
> -	if (ret < 0) {
> +	if (ret < sizeof(*icresp)) {
>  		pr_warn("queue %d: failed to receive icresp, error %d\n",
>  			nvme_tcp_queue_id(queue), ret);
> +		ret = -ECONNRESET;

If kernel_recvmsg() returns an error, don't we want to preserve and
return that instead of unconditionally overriding to -ECONNRESET? I
think the suggestion was to set ret to that only if ret >= 0.