Re: [dpdk-dev] [PATCH 1/3] i40evf: support I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES_EX in DPDK PF host

[Thomas Monjalon <thomas.monjalon@6wind.com>]

Hi Helin,

The title mention i40evf but the patch is related to PF (for VF communication).
So I wonder wether it would be clearer to prefix it with i40e? Not sure.

2014-08-20 11:33, Helin Zhang:
> To configure VSI queues for VF, Linux PF host supports
> operation of I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES with
> limited configurations. To support more configurations
> (e.g configurable CRC stripping in VF), a new operation
> of I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES_EX has been
> supported in DPDK PF host.

This patch would be easier to read if you could split it in 3 patches:
1) renamings and line wrapping rework
2) introduction of new extended message/operation
3) crc config

> -	int ret = I40E_SUCCESS;
> -	struct i40e_virtchnl_vsi_queue_config_info *qconfig =
> -	    (struct i40e_virtchnl_vsi_queue_config_info *)msg;
> -	int i;
> -	struct i40e_virtchnl_queue_pair_info *qpair;
> -
> -	if (msg == NULL || msglen <= sizeof(*qconfig) ||
> -		qconfig->num_queue_pairs > vsi->nb_qps) {
> +	struct i40e_virtchnl_vsi_queue_config_info *vc_vqci =
> +		(struct i40e_virtchnl_vsi_queue_config_info *)msg;
> +	struct i40e_virtchnl_queue_pair_info *vc_qpi;
> +	struct i40e_virtchnl_queue_pair_extra_info *vc_qpei = NULL;
> +	int i, ret = I40E_SUCCESS;
> +
> +	if (msg == NULL || msglen <= sizeof(*vc_vqci) ||
> +		vc_vqci->num_queue_pairs > vsi->nb_qps) {
>  		PMD_DRV_LOG(ERR, "vsi_queue_config_info argument wrong\n");
>  		ret = I40E_ERR_PARAM;
>  		goto send_msg;
>  	}
>  
> -	qpair = qconfig->qpair;
> -	for (i = 0; i < qconfig->num_queue_pairs; i++) {
> -		if (qpair[i].rxq.queue_id > vsi->nb_qps - 1 ||
> -			qpair[i].txq.queue_id > vsi->nb_qps - 1) {
> +	vc_qpi = vc_vqci->qpair;
> +	if (opcode == I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES_EX)
> +		vc_qpei = (struct i40e_virtchnl_queue_pair_extra_info *)
> +						(((uint8_t *)vc_qpi) +
> +			(sizeof(struct i40e_virtchnl_queue_pair_info) *
> +					vc_vqci->num_queue_pairs));
> +
> +	for (i = 0; i < vc_vqci->num_queue_pairs; i++) {
> +		if (vc_qpi[i].rxq.queue_id > vsi->nb_qps - 1 ||
> +			vc_qpi[i].txq.queue_id > vsi->nb_qps - 1) {
>  			ret = I40E_ERR_PARAM;
>  			goto send_msg;
>  		}

Mixing renaming and new feature makes it difficult to read.

>  	case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
>  		PMD_DRV_LOG(INFO, "OP_ENABLE_QUEUES received\n");
> -		i40e_pf_host_process_cmd_enable_queues(vf,
> -						msg, msglen);
> +		i40e_pf_host_process_cmd_enable_queues(vf, msg, msglen);
>  		break;
>  	case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
>  		PMD_DRV_LOG(INFO, "OP_DISABLE_QUEUE received\n");
> -		i40e_pf_host_process_cmd_disable_queues(vf,
> -						msg, msglen);
> +		i40e_pf_host_process_cmd_disable_queues(vf, msg, msglen);
>  		break;
>  	case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
>  		PMD_DRV_LOG(INFO, "OP_ADD_ETHER_ADDRESS received\n");
> -		i40e_pf_host_process_cmd_add_ether_address(vf,
> -						msg, msglen);
> +		i40e_pf_host_process_cmd_add_ether_address(vf, msg, msglen);
>  		break;
>  	case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
>  		PMD_DRV_LOG(INFO, "OP_DEL_ETHER_ADDRESS received\n");
> -		i40e_pf_host_process_cmd_del_ether_address(vf,
> -						msg, msglen);
> +		i40e_pf_host_process_cmd_del_ether_address(vf, msg, msglen);
>  		break;
>  	case I40E_VIRTCHNL_OP_ADD_VLAN:
>  		PMD_DRV_LOG(INFO, "OP_ADD_VLAN received\n");
> @@ -932,10 +951,9 @@ i40e_pf_host_handle_vf_msg(struct rte_eth_dev *dev,
>  	case I40E_VIRTCHNL_OP_FCOE:
>  		PMD_DRV_LOG(ERR, "OP_FCOE received, not supported\n");
>  	default:
> -		PMD_DRV_LOG(ERR, "%u received, not supported\n",
> -							opcode);
> -		i40e_pf_host_send_msg_to_vf(vf, opcode,
> -				I40E_ERR_PARAM, NULL, 0);
> +		PMD_DRV_LOG(ERR, "%u received, not supported\n", opcode);
> +		i40e_pf_host_send_msg_to_vf(vf, opcode, I40E_ERR_PARAM,
> +								NULL, 0);
>  		break;
>  	}

Line wrapping should go in a cleanup patch (like renaming).

Thanks
-- 
Thomas