[PATCH v15 05/20] nvme-tcp: Add DDP offload control path

[Sagi Grimberg]

> +static int nvme_tcp_offload_socket(struct nvme_tcp_queue *queue)
> +{
> +	struct ulp_ddp_config config = {.type = ULP_DDP_NVME};
> +	int ret;
> +
> +	config.nvmeotcp.pfv = NVME_TCP_PFV_1_0;
> +	config.nvmeotcp.cpda = 0;
> +	config.nvmeotcp.dgst =
> +		queue->hdr_digest ? NVME_TCP_HDR_DIGEST_ENABLE : 0;
> +	config.nvmeotcp.dgst |=
> +		queue->data_digest ? NVME_TCP_DATA_DIGEST_ENABLE : 0;
> +	config.nvmeotcp.queue_size = queue->ctrl->ctrl.sqsize + 1;
> +	config.nvmeotcp.queue_id = nvme_tcp_queue_id(queue);
> +	config.nvmeotcp.io_cpu = queue->sock->sk->sk_incoming_cpu;

Please hide io_cpu inside the interface. There is no reason for
the ulp to assign this. btw, is sk_incoming_cpu stable at this
point?