RE: [PATCH 03/13] net/idpf: support device initialization

[Raslan Darawsheh <rasland@nvidia.com>]

Hi,

> -----Original Message-----
> From: Junfeng Guo <junfeng.guo@intel.com>
> Sent: Wednesday, August 3, 2022 2:31 PM
> To: qi.z.zhang@intel.com; jingjing.wu@intel.com; beilei.xing@intel.com
> Cc: dev@dpdk.org; junfeng.guo@intel.com; Xiaoyun Li
> <xiaoyun.li@intel.com>; Xiao Wang <xiao.w.wang@intel.com>
> Subject: [PATCH 03/13] net/idpf: support device initialization
> 
> Support device init and the following dev ops:
> 	- dev_configure
> 	- dev_start
> 	- dev_stop
> 	- dev_close
> 
> Signed-off-by: Beilei Xing <beilei.xing@intel.com>
> Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
> Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
> Signed-off-by: Junfeng Guo <junfeng.guo@intel.com>
> ---
>  drivers/net/idpf/idpf_ethdev.c | 651
> +++++++++++++++++++++++++++++++++  drivers/net/idpf/idpf_ethdev.h
> | 205 +++++++++++  drivers/net/idpf/idpf_vchnl.c  | 476
> ++++++++++++++++++++++++
>  drivers/net/idpf/meson.build   |  18 +
>  drivers/net/idpf/version.map   |   3 +
>  drivers/net/meson.build        |   1 +
>  6 files changed, 1354 insertions(+)
>  create mode 100644 drivers/net/idpf/idpf_ethdev.c  create mode 100644
> drivers/net/idpf/idpf_ethdev.h  create mode 100644
> drivers/net/idpf/idpf_vchnl.c  create mode 100644
> drivers/net/idpf/meson.build  create mode 100644
> drivers/net/idpf/version.map
> 
> diff --git a/drivers/net/idpf/idpf_ethdev.c b/drivers/net/idpf/idpf_ethdev.c
> new file mode 100644 index 0000000000..87c68226dd
> --- /dev/null
> +++ b/drivers/net/idpf/idpf_ethdev.c
> @@ -0,0 +1,651 @@
> +/* SPDX-License-Identifier: BSD-3-Clause
> + * Copyright(c) 2022 Intel Corporation
> + */
> +
> +#include <rte_atomic.h>
> +#include <rte_eal.h>
> +#include <rte_ether.h>
> +#include <ethdev_driver.h>
> +#include <ethdev_pci.h>
> +#include <rte_malloc.h>
> +#include <rte_memzone.h>
> +#include <rte_dev.h>
> +
> +#include "idpf_ethdev.h"
> +
> +#define REPRESENTOR		"representor"
> +
> +struct idpf_adapter *adapter;
> +uint16_t used_vecs_num;
> +
> +static const char * const idpf_valid_args[] = {
> +	REPRESENTOR,
> +	NULL
> +};
> +
> +static int idpf_dev_configure(struct rte_eth_dev *dev); static int
> +idpf_dev_start(struct rte_eth_dev *dev); static int
> +idpf_dev_stop(struct rte_eth_dev *dev); static int
> +idpf_dev_close(struct rte_eth_dev *dev);
> +
> +static const struct eth_dev_ops idpf_eth_dev_ops = {
> +	.dev_configure			= idpf_dev_configure,
> +	.dev_start			= idpf_dev_start,
> +	.dev_stop			= idpf_dev_stop,
> +	.dev_close			= idpf_dev_close,
> +};
> +
> +static int
> +idpf_init_vport_req_info(struct rte_eth_dev *dev) {
> +	struct virtchnl2_create_vport *vport_info;
> +	uint16_t idx = adapter->next_vport_idx;
> +
> +	if (!adapter->vport_req_info[idx]) {
> +		adapter->vport_req_info[idx] = rte_zmalloc(NULL,
> +				    sizeof(struct virtchnl2_create_vport), 0);
> +		if (!adapter->vport_req_info[idx]) {
> +			PMD_INIT_LOG(ERR, "Failed to allocate
> vport_req_info");
> +			return -1;
> +		}
> +	}
> +
> +	vport_info =
> +		(struct virtchnl2_create_vport *)adapter-
> >vport_req_info[idx];
> +
> +	vport_info->vport_type =
> +rte_cpu_to_le_16(VIRTCHNL2_VPORT_TYPE_DEFAULT);
> +
> +	return 0;
> +}
> +
> +static uint16_t
> +idpf_get_next_vport_idx(struct idpf_vport **vports, uint16_t
> max_vport_nb,
> +			uint16_t cur_vport_idx)
> +{
> +	uint16_t vport_idx;
> +	uint16_t i;
> +
> +	if (cur_vport_idx < max_vport_nb && !vports[cur_vport_idx + 1]) {
> +		vport_idx = cur_vport_idx + 1;
> +		return vport_idx;
> +	}
> +
> +	for (i = 0; i < max_vport_nb; i++) {
> +		if (!vports[i])
> +			break;
> +	}
> +
> +	if (i == max_vport_nb)
> +		vport_idx = IDPF_INVALID_VPORT_IDX;
> +	else
> +		vport_idx = i;
> +
> +	return vport_idx;
> +}
> +
> +#ifndef IDPF_RSS_KEY_LEN
> +#define IDPF_RSS_KEY_LEN 52
> +#endif
> +
> +static int
> +idpf_init_vport(struct rte_eth_dev *dev) {
> +	uint16_t idx = adapter->next_vport_idx;
> +	struct virtchnl2_create_vport *vport_info =
> +		(struct virtchnl2_create_vport *)adapter-
> >vport_recv_info[idx];
> +	struct idpf_vport *vport =
> +		(struct idpf_vport *)dev->data->dev_private;
> +	int i;
> +
> +	vport->adapter = adapter;
> +	vport->vport_id = vport_info->vport_id;
> +	vport->txq_model = vport_info->txq_model;
> +	vport->rxq_model = vport_info->rxq_model;
> +	vport->num_tx_q = vport_info->num_tx_q;
> +	vport->num_tx_complq = vport_info->num_tx_complq;
> +	vport->num_rx_q = vport_info->num_rx_q;
> +	vport->num_rx_bufq = vport_info->num_rx_bufq;
> +	vport->max_mtu = vport_info->max_mtu;
> +	rte_memcpy(vport->default_mac_addr,
> +		   vport_info->default_mac_addr, ETH_ALEN);
> +	vport->rss_algorithm = vport_info->rss_algorithm;
> +	vport->rss_key_size = RTE_MIN(IDPF_RSS_KEY_LEN,
> +				     vport_info->rss_key_size);
> +	vport->rss_lut_size = vport_info->rss_lut_size;
> +	vport->sw_idx = idx;
> +
> +	for (i = 0; i < vport_info->chunks.num_chunks; i++) {
> +		if (vport_info->chunks.chunks[i].type ==
> +		    VIRTCHNL2_QUEUE_TYPE_TX) {
> +			vport->chunks_info.tx_start_qid =
> +				vport_info-
> >chunks.chunks[i].start_queue_id;
> +			vport->chunks_info.tx_qtail_start =
> +				vport_info-
> >chunks.chunks[i].qtail_reg_start;
> +			vport->chunks_info.tx_qtail_spacing =
> +				vport_info-
> >chunks.chunks[i].qtail_reg_spacing;
> +		} else if (vport_info->chunks.chunks[i].type ==
> +			 VIRTCHNL2_QUEUE_TYPE_RX) {
> +			vport->chunks_info.rx_start_qid =
> +				vport_info-
> >chunks.chunks[i].start_queue_id;
> +			vport->chunks_info.rx_qtail_start =
> +				vport_info-
> >chunks.chunks[i].qtail_reg_start;
> +			vport->chunks_info.rx_qtail_spacing =
> +				vport_info-
> >chunks.chunks[i].qtail_reg_spacing;
> +		} else if (vport_info->chunks.chunks[i].type ==
> +			 VIRTCHNL2_QUEUE_TYPE_TX_COMPLETION) {
> +			vport->chunks_info.tx_compl_start_qid =
> +				vport_info-
> >chunks.chunks[i].start_queue_id;
> +			vport->chunks_info.tx_compl_qtail_start =
> +				vport_info-
> >chunks.chunks[i].qtail_reg_start;
> +			vport->chunks_info.tx_compl_qtail_spacing =
> +				vport_info-
> >chunks.chunks[i].qtail_reg_spacing;
> +		} else if (vport_info->chunks.chunks[i].type ==
> +			 VIRTCHNL2_QUEUE_TYPE_RX_BUFFER) {
> +			vport->chunks_info.rx_buf_start_qid =
> +				vport_info-
> >chunks.chunks[i].start_queue_id;
> +			vport->chunks_info.rx_buf_qtail_start =
> +				vport_info-
> >chunks.chunks[i].qtail_reg_start;
> +			vport->chunks_info.rx_buf_qtail_spacing =
> +				vport_info-
> >chunks.chunks[i].qtail_reg_spacing;
> +		}
> +	}
> +
> +	adapter->vports[idx] = vport;
> +	adapter->cur_vport_nb++;
> +	adapter->next_vport_idx = idpf_get_next_vport_idx(adapter-
> >vports,
> +						  adapter->max_vport_nb,
> idx);
> +	if (adapter->next_vport_idx == IDPF_INVALID_VPORT_IDX) {
> +		PMD_INIT_LOG(ERR, "Failed to get next vport id");
> +		return -1;
> +	}
> +
> +	return 0;
> +}
> +
> +static int
> +idpf_dev_configure(struct rte_eth_dev *dev) {
> +	struct idpf_vport *vport =
> +		(struct idpf_vport *)dev->data->dev_private;
> +	int ret = 0;
> +
> +	ret = idpf_init_vport_req_info(dev);
> +	if (ret) {
> +		PMD_INIT_LOG(ERR, "Failed to init vport req_info.");
> +		return ret;
> +	}
> +
> +	ret = idpf_create_vport(dev);
> +	if (ret) {
> +		PMD_INIT_LOG(ERR, "Failed to create vport.");
> +		return ret;
> +	}
> +
> +	ret = idpf_init_vport(dev);
> +	if (ret) {
> +		PMD_INIT_LOG(ERR, "Failed to init vports.");
> +		return ret;
> +	}
> +
> +	rte_ether_addr_copy((struct rte_ether_addr *)vport-
> >default_mac_addr,
> +			    &dev->data->mac_addrs[0]);
> +
> +	return ret;
> +}
> +
> +static int
> +idpf_dev_start(struct rte_eth_dev *dev) {
> +	struct idpf_vport *vport =
> +		(struct idpf_vport *)dev->data->dev_private;
> +
> +	PMD_INIT_FUNC_TRACE();
> +
> +	vport->stopped = 0;
> +
> +	if (idpf_ena_dis_vport(vport, true)) {
> +		PMD_DRV_LOG(ERR, "Failed to enable vport");
> +		goto err_vport;
> +	}
> +
> +	return 0;
> +
> +err_vport:
> +	return -1;
> +}
> +
> +static int
> +idpf_dev_stop(struct rte_eth_dev *dev)
> +{
> +	struct idpf_vport *vport =
> +		(struct idpf_vport *)dev->data->dev_private;
> +
> +	PMD_INIT_FUNC_TRACE();
> +
> +	if (vport->stopped == 1)
> +		return 0;
> +
> +	if (idpf_ena_dis_vport(vport, false))
> +		PMD_DRV_LOG(ERR, "disable vport failed");
> +
> +	vport->stopped = 1;
> +	dev->data->dev_started = 0;
> +
> +	return 0;
> +}
> +
> +static int
> +idpf_dev_close(struct rte_eth_dev *dev) {
> +	struct idpf_vport *vport =
> +		(struct idpf_vport *)dev->data->dev_private;
> +
> +	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
> +		return 0;
> +
> +	idpf_dev_stop(dev);
> +	idpf_destroy_vport(vport);
> +
> +	return 0;
> +}
> +
> +static int idpf_parse_devargs(struct rte_eth_dev *dev) {
> +	struct rte_devargs *devargs = dev->device->devargs;
> +	struct rte_kvargs *kvlist;
> +	int ret = 0;
> +
> +	if (!devargs)
> +		return 0;
> +
> +	kvlist = rte_kvargs_parse(devargs->args, idpf_valid_args);
> +	if (!kvlist) {
> +		PMD_INIT_LOG(ERR, "invalid kvargs key");
> +		return -EINVAL;
> +	}
> +
> +	rte_kvargs_free(kvlist);
> +	return ret;
> +}
> +
> +static void
> +idpf_reset_pf(struct iecm_hw *hw)
> +{
> +	uint32_t reg;
> +
> +	reg = IECM_READ_REG(hw, PFGEN_CTRL);
> +	IECM_WRITE_REG(hw, PFGEN_CTRL, (reg | PFGEN_CTRL_PFSWR)); }
> +
> +#define IDPF_RESET_WAIT_CNT 100
> +static int
> +idpf_check_pf_reset_done(struct iecm_hw *hw) {
> +	uint32_t reg;
> +	int i;
> +
> +	for (i = 0; i < IDPF_RESET_WAIT_CNT; i++) {
> +		reg = IECM_READ_REG(hw, PFGEN_RSTAT);
> +		if (reg != 0xFFFFFFFF && (reg &
> PFGEN_RSTAT_PFR_STATE_M))
> +			return 0;
> +		rte_delay_ms(1000);
> +	}
> +
> +	PMD_INIT_LOG(ERR, "IDPF reset timeout");
> +	return -EBUSY;
> +}
> +
> +#define CTLQ_NUM 2
> +static int
> +idpf_init_mbx(struct iecm_hw *hw)
> +{
> +	struct iecm_ctlq_create_info ctlq_info[CTLQ_NUM] = {
> +		{
> +			.type = IECM_CTLQ_TYPE_MAILBOX_TX,
> +			.id = IDPF_CTLQ_ID,
> +			.len = IDPF_CTLQ_LEN,
> +			.buf_size = IDPF_DFLT_MBX_BUF_SIZE,
> +			.reg = {
> +				.head = PF_FW_ATQH,
> +				.tail = PF_FW_ATQT,
> +				.len = PF_FW_ATQLEN,
> +				.bah = PF_FW_ATQBAH,
> +				.bal = PF_FW_ATQBAL,
> +				.len_mask = PF_FW_ATQLEN_ATQLEN_M,
> +				.len_ena_mask =
> PF_FW_ATQLEN_ATQENABLE_M,
> +				.head_mask = PF_FW_ATQH_ATQH_M,
> +			}
> +		},
> +		{
> +			.type = IECM_CTLQ_TYPE_MAILBOX_RX,
> +			.id = IDPF_CTLQ_ID,
> +			.len = IDPF_CTLQ_LEN,
> +			.buf_size = IDPF_DFLT_MBX_BUF_SIZE,
> +			.reg = {
> +				.head = PF_FW_ARQH,
> +				.tail = PF_FW_ARQT,
> +				.len = PF_FW_ARQLEN,
> +				.bah = PF_FW_ARQBAH,
> +				.bal = PF_FW_ARQBAL,
> +				.len_mask = PF_FW_ARQLEN_ARQLEN_M,
> +				.len_ena_mask =
> PF_FW_ARQLEN_ARQENABLE_M,
> +				.head_mask = PF_FW_ARQH_ARQH_M,
> +			}
> +		}
> +	};
> +	struct iecm_ctlq_info *ctlq;
> +	int ret = 0;
> +
> +	ret = iecm_ctlq_init(hw, CTLQ_NUM, ctlq_info);
> +	if (ret)
> +		return ret;
> +
> +	LIST_FOR_EACH_ENTRY_SAFE(ctlq, NULL, &hw->cq_list_head,
> +				 struct iecm_ctlq_info, cq_list) {
> +		if (ctlq->q_id == IDPF_CTLQ_ID && ctlq->cq_type ==
> IECM_CTLQ_TYPE_MAILBOX_TX)
> +			hw->asq = ctlq;
> +		if (ctlq->q_id == IDPF_CTLQ_ID && ctlq->cq_type ==
> IECM_CTLQ_TYPE_MAILBOX_RX)
> +			hw->arq = ctlq;
> +	}
> +
> +	if (!hw->asq || !hw->arq) {
> +		iecm_ctlq_deinit(hw);
> +		ret = -ENOENT;
> +	}
> +
> +	return ret;
> +}
> +
> +static int
> +idpf_adapter_init(struct rte_eth_dev *dev) {
> +	struct iecm_hw *hw = &adapter->hw;
> +	struct rte_pci_device *pci_dev = IDPF_DEV_TO_PCI(dev);
> +	int ret = 0;
> +
> +	if (adapter->initialized)
> +		return 0;
> +
> +	hw->hw_addr = (void *)pci_dev->mem_resource[0].addr;
> +	hw->hw_addr_len = pci_dev->mem_resource[0].len;
> +	hw->back = adapter;
> +	hw->vendor_id = pci_dev->id.vendor_id;
> +	hw->device_id = pci_dev->id.device_id;
> +	hw->subsystem_vendor_id = pci_dev->id.subsystem_vendor_id;
> +
> +	ret = idpf_parse_devargs(dev);
> +	if (ret) {
> +		PMD_INIT_LOG(ERR, "Failed to parse devargs");
> +		goto err;
> +	}
> +
> +	idpf_reset_pf(hw);
> +	ret = idpf_check_pf_reset_done(hw);
> +	if (ret) {
> +		PMD_INIT_LOG(ERR, "IDPF is still resetting");
> +		goto err;
> +	}
> +
> +	ret = idpf_init_mbx(hw);
> +	if (ret) {
> +		PMD_INIT_LOG(ERR, "Failed to init mailbox");
> +		goto err;
> +	}
> +
> +	adapter->mbx_resp = rte_zmalloc("idpf_adapter_mbx_resp",
> IDPF_DFLT_MBX_BUF_SIZE, 0);
> +	if (!adapter->mbx_resp) {
> +		PMD_INIT_LOG(ERR, "Failed to allocate
> idpf_adapter_mbx_resp memory");
> +		goto err_mbx;
> +	}
> +
> +	if (idpf_check_api_version(adapter)) {
> +		PMD_INIT_LOG(ERR, "Failed to check api version");
> +		goto err_api;
> +	}
> +
> +	adapter->caps = rte_zmalloc("idpf_caps",
> +			       sizeof(struct virtchnl2_get_capabilities), 0);
> +	if (!adapter->caps) {
> +		PMD_INIT_LOG(ERR, "Failed to allocate idpf_caps memory");
> +		goto err_api;
> +	}
> +
> +	if (idpf_get_caps(adapter)) {
> +		PMD_INIT_LOG(ERR, "Failed to get capabilities");
> +		goto err_caps;
> +	}
> +
> +	adapter->max_vport_nb = adapter->caps->max_vports;
> +
> +	adapter->vport_req_info = rte_zmalloc("vport_req_info",
> +					      adapter->max_vport_nb *
> +					      sizeof(*adapter-
> >vport_req_info),
> +					      0);
> +	if (!adapter->vport_req_info) {
> +		PMD_INIT_LOG(ERR, "Failed to allocate vport_req_info
> memory");
> +		goto err_caps;
> +	}
> +
> +	adapter->vport_recv_info = rte_zmalloc("vport_recv_info",
> +					       adapter->max_vport_nb *
> +					       sizeof(*adapter-
> >vport_recv_info),
> +					       0);
> +	if (!adapter->vport_recv_info) {
> +		PMD_INIT_LOG(ERR, "Failed to allocate vport_recv_info
> memory");
> +		goto err_vport_recv_info;
> +	}
> +
> +	adapter->vports = rte_zmalloc("vports",
> +				      adapter->max_vport_nb *
> +				      sizeof(*adapter->vports),
> +				      0);
> +	if (!adapter->vports) {
> +		PMD_INIT_LOG(ERR, "Failed to allocate vports memory");
> +		goto err_vports;
> +	}
> +
> +	adapter->max_rxq_per_msg = (IDPF_DFLT_MBX_BUF_SIZE -
> +			       sizeof(struct virtchnl2_config_rx_queues)) /
> +			       sizeof(struct virtchnl2_rxq_info);
> +	adapter->max_txq_per_msg = (IDPF_DFLT_MBX_BUF_SIZE -
> +			       sizeof(struct virtchnl2_config_tx_queues)) /
> +			       sizeof(struct virtchnl2_txq_info);
> +
> +	adapter->cur_vport_nb = 0;
> +	adapter->next_vport_idx = 0;
> +	adapter->initialized = true;
> +
> +	return ret;
> +
> +err_vports:
> +	rte_free(adapter->vports);
> +	adapter->vports = NULL;
> +err_vport_recv_info:
> +	rte_free(adapter->vport_req_info);
> +	adapter->vport_req_info = NULL;
> +err_caps:
> +	rte_free(adapter->caps);
> +	adapter->caps = NULL;
> +err_api:
> +	rte_free(adapter->mbx_resp);
> +	adapter->mbx_resp = NULL;
> +err_mbx:
> +	iecm_ctlq_deinit(hw);
> +err:
> +	return -1;
> +}
> +
> +
> +static int
> +idpf_dev_init(struct rte_eth_dev *dev, __rte_unused void *init_params)
> +{
> +	struct idpf_vport *vport =
> +		(struct idpf_vport *)dev->data->dev_private;
> +	int ret = 0;
> +
> +	PMD_INIT_FUNC_TRACE();
> +
> +	dev->dev_ops = &idpf_eth_dev_ops;
> +
> +	/* for secondary processes, we don't initialise any further as primary
> +	 * has already done this work.
> +	 */
> +	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
> +		return ret;
> +
> +	ret = idpf_adapter_init(dev);
> +	if (ret) {
> +		PMD_INIT_LOG(ERR, "Failed to init adapter.");
> +		return ret;
> +	}
> +
> +	dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
> +
> +	vport->dev_data = dev->data;
> +
> +	dev->data->mac_addrs = rte_zmalloc(NULL, RTE_ETHER_ADDR_LEN,
> 0);
> +	if (dev->data->mac_addrs == NULL) {
> +		PMD_INIT_LOG(ERR, "Cannot allocate mac_addr memory.");
> +		ret = -ENOMEM;
> +		goto err;
> +	}
> +
> +err:
> +	return ret;
> +}
> +
> +static int
> +idpf_dev_uninit(struct rte_eth_dev *dev) {
> +	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
> +		return -EPERM;
> +
> +	idpf_dev_close(dev);
> +
> +	return 0;
> +}
> +
> +static const struct rte_pci_id pci_id_idpf_map[] = {
> +	{ RTE_PCI_DEVICE(IECM_INTEL_VENDOR_ID, IECM_DEV_ID_PF) },
> +	{ .vendor_id = 0, /* sentinel */ },
> +};
> +
> +static int
> +idpf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
> +	      struct rte_pci_device *pci_dev)
> +{
> +	struct rte_eth_devargs eth_da = { .nb_representor_ports = 0 };
> +	char name[RTE_ETH_NAME_MAX_LEN];
> +	int i, retval;
> +
> +	if (pci_dev->device.devargs) {
> +		retval = rte_eth_devargs_parse(pci_dev->device.devargs-
> >args,
> +				&eth_da);
> +		if (retval)
> +			return retval;
> +	}
> +
> +	if (!eth_da.nb_representor_ports) {
> +		PMD_INIT_LOG(ERR, "Failed to probe, need to add
> representor devargs.");
> +		return -1;
> +	}
> +
> +	if (!adapter) {
> +		adapter = (struct idpf_adapter *)rte_zmalloc("idpf_adapter",
> +					     sizeof(struct idpf_adapter), 0);
> +		if (!adapter) {
> +			PMD_INIT_LOG(ERR, "Failed to allocate adapter.");
> +			return -1;
> +		}
> +	}
> +
> +	for (i = 0; i < eth_da.nb_representor_ports; i++) {
> +		snprintf(name, sizeof(name), "idpf_vport_%d",
> +			 eth_da.representor_ports[i]);
> +		retval = rte_eth_dev_create(&pci_dev->device, name,
> +					    sizeof(struct idpf_vport),
> +					    NULL, NULL, idpf_dev_init,
> +					    NULL);
> +		if (retval)
> +			PMD_DRV_LOG(ERR, "failed to creat vport %d", i);
> +	}
> +
> +	return 0;
> +}
> +
> +static void
> +idpf_adapter_rel(struct idpf_adapter *adapter) {
> +	struct iecm_hw *hw = &adapter->hw;
> +	int i;
> +
> +	iecm_ctlq_deinit(hw);
> +
> +	if (adapter->caps) {
> +		rte_free(adapter->caps);
> +		adapter->caps = NULL;
> +	}
> +
> +	if (adapter->mbx_resp) {
> +		rte_free(adapter->mbx_resp);
> +		adapter->mbx_resp = NULL;
> +	}
> +
> +	if (adapter->vport_req_info) {
> +		for (i = 0; i < adapter->max_vport_nb; i++) {
> +			if (adapter->vport_req_info[i]) {
> +				rte_free(adapter->vport_req_info[i]);
> +				adapter->vport_req_info[i] = NULL;
> +			}
> +		}
> +		rte_free(adapter->vport_req_info);
> +		adapter->vport_req_info = NULL;
> +	}
> +
> +	if (adapter->vport_recv_info) {
> +		for (i = 0; i < adapter->max_vport_nb; i++) {
> +			if (adapter->vport_recv_info[i]) {
> +				rte_free(adapter->vport_recv_info[i]);
> +				adapter->vport_recv_info[i] = NULL;
> +			}
> +		}
> +	}
> +
> +	if (adapter->vports) {
> +		/* Needn't free adapter->vports[i] since it's private data */
> +		rte_free(adapter->vports);
> +		adapter->vports = NULL;
> +	}
> +}
> +
> +static int
> +idpf_pci_remove(struct rte_pci_device *pci_dev) {
> +	if (adapter) {
> +		idpf_adapter_rel(adapter);
> +		rte_free(adapter);
> +		adapter = NULL;
> +	}
> +
> +	return rte_eth_dev_pci_generic_remove(pci_dev, idpf_dev_uninit);
> }
> +
> +static struct rte_pci_driver rte_idpf_pmd = {
> +	.id_table	= pci_id_idpf_map,
> +	.drv_flags	= RTE_PCI_DRV_NEED_MAPPING |
> RTE_PCI_DRV_INTR_LSC |
> +			  RTE_PCI_DRV_PROBE_AGAIN,
> +	.probe		= idpf_pci_probe,
> +	.remove		= idpf_pci_remove,
> +};
> +
> +/**
> + * Driver initialization routine.
> + * Invoked once at EAL init time.
> + * Register itself as the [Poll Mode] Driver of PCI devices.
> + */
> +RTE_PMD_REGISTER_PCI(net_idpf, rte_idpf_pmd);
> +RTE_PMD_REGISTER_PCI_TABLE(net_idpf, pci_id_idpf_map);
> +RTE_PMD_REGISTER_KMOD_DEP(net_ice, "* igb_uio | uio_pci_generic |
> +vfio-pci");
> +
> +RTE_LOG_REGISTER_SUFFIX(idpf_logtype_init, init, NOTICE);
> +RTE_LOG_REGISTER_SUFFIX(idpf_logtype_driver, driver, NOTICE);
> diff --git a/drivers/net/idpf/idpf_ethdev.h b/drivers/net/idpf/idpf_ethdev.h
> new file mode 100644 index 0000000000..501f772fa8
> --- /dev/null
> +++ b/drivers/net/idpf/idpf_ethdev.h
> @@ -0,0 +1,205 @@
> +/* SPDX-License-Identifier: BSD-3-Clause
> + * Copyright(c) 2022 Intel Corporation
> + */
> +
> +#ifndef _IDPF_ETHDEV_H_
> +#define _IDPF_ETHDEV_H_
> +
> +#include <stdint.h>
> +#include <rte_mbuf.h>
> +#include <rte_mempool.h>
> +#include <rte_malloc.h>
> +#include <rte_spinlock.h>
> +#include <rte_ethdev.h>
> +#include <rte_kvargs.h>
> +#include <ethdev_driver.h>
> +
> +#include "base/iecm_osdep.h"
> +#include "base/iecm_type.h"
> +#include "base/iecm_devids.h"
> +#include "base/iecm_lan_txrx.h"
> +#include "base/iecm_lan_pf_regs.h"
> +#include "base/virtchnl.h"
> +#include "base/virtchnl2.h"
> +
> +#define IDPF_INVALID_VPORT_IDX	0xffff
> +#define IDPF_TXQ_PER_GRP	1
> +#define IDPF_TX_COMPLQ_PER_GRP	1
> +#define IDPF_RXQ_PER_GRP	1
> +#define IDPF_RX_BUFQ_PER_GRP	2
> +
> +#define IDPF_CTLQ_ID		-1
> +#define IDPF_CTLQ_LEN		64
> +#define IDPF_DFLT_MBX_BUF_SIZE	4096
> +
> +#define IDPF_DFLT_Q_VEC_NUM	1
> +#define IDPF_DFLT_INTERVAL	16
> +
> +#define IDPF_MAX_NUM_QUEUES	256
> +#define IDPF_MIN_BUF_SIZE	1024
> +#define IDPF_MAX_FRAME_SIZE	9728
> +
> +#define IDPF_NUM_MACADDR_MAX	64
> +
> +#define IDPF_MAX_PKT_TYPE	1024
> +
> +#define IDPF_VLAN_TAG_SIZE	4
> +#define IDPF_ETH_OVERHEAD \
> +	(RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN +
> IDPF_VLAN_TAG_SIZE * 2)
> +
> +#ifndef ETH_ADDR_LEN
> +#define ETH_ADDR_LEN		6
> +#endif
> +
> +/* Message type read in virtual channel from PF */ enum idpf_vc_result
> +{
> +	IDPF_MSG_ERR = -1, /* Meet error when accessing admin queue */
> +	IDPF_MSG_NON,      /* Read nothing from admin queue */
> +	IDPF_MSG_SYS,      /* Read system msg from admin queue */
> +	IDPF_MSG_CMD,      /* Read async command result */
> +};
> +
> +struct idpf_chunks_info {
> +	uint32_t tx_start_qid;
> +	uint32_t rx_start_qid;
> +	/* Valid only if split queue model */
> +	uint32_t tx_compl_start_qid;
> +	uint32_t rx_buf_start_qid;
> +
> +	uint64_t tx_qtail_start;
> +	uint32_t tx_qtail_spacing;
> +	uint64_t rx_qtail_start;
> +	uint32_t rx_qtail_spacing;
> +	uint64_t tx_compl_qtail_start;
> +	uint32_t tx_compl_qtail_spacing;
> +	uint64_t rx_buf_qtail_start;
> +	uint32_t rx_buf_qtail_spacing;
> +};
> +
> +struct idpf_vport {
> +	struct idpf_adapter *adapter; /* Backreference to associated
> adapter */
> +	uint16_t vport_id;
> +	uint32_t txq_model;
> +	uint32_t rxq_model;
> +	uint16_t num_tx_q;
> +	/* valid only if txq_model is split Q */
> +	uint16_t num_tx_complq;
> +	uint16_t num_rx_q;
> +	/* valid only if rxq_model is split Q */
> +	uint16_t num_rx_bufq;
> +
> +	uint16_t max_mtu;
> +	uint8_t default_mac_addr[VIRTCHNL_ETH_LENGTH_OF_ADDRESS];
> +
> +	enum virtchnl_rss_algorithm rss_algorithm;
> +	uint16_t rss_key_size;
> +	uint16_t rss_lut_size;
> +
> +	uint16_t sw_idx; /* SW idx */
> +
> +	struct rte_eth_dev_data *dev_data; /* Pointer to the device data */
> +	uint16_t max_pkt_len; /* Maximum packet length */
> +
> +	/* RSS info */
> +	uint32_t *rss_lut;
> +	uint8_t *rss_key;
> +	uint64_t rss_hf;
> +
> +	/* Chunk info */
> +	struct idpf_chunks_info chunks_info;
> +
> +	/* Event from ipf */
> +	bool link_up;
> +	uint32_t link_speed;
> +
> +	bool stopped;
> +	struct virtchnl2_vport_stats eth_stats_offset; };
> +
> +struct idpf_adapter {
> +	struct iecm_hw hw;
> +
> +	struct virtchnl_version_info virtchnl_version;
> +	struct virtchnl2_get_capabilities *caps;
> +
> +	volatile enum virtchnl_ops pend_cmd; /* pending command not
> finished */
> +	uint32_t cmd_retval; /* return value of the cmd response from ipf */
> +	uint8_t *mbx_resp; /* buffer to store the mailbox response from ipf
> */
> +
> +	uint32_t txq_model;
> +	uint32_t rxq_model;
> +
> +	/* Vport info */
> +	uint8_t **vport_req_info;
> +	uint8_t **vport_recv_info;
> +	struct idpf_vport **vports;
> +	uint16_t max_vport_nb;
> +	uint16_t cur_vport_nb;
> +	uint16_t next_vport_idx;
> +
> +	/* Max config queue number per VC message */
> +	uint32_t max_rxq_per_msg;
> +	uint32_t max_txq_per_msg;
> +
> +	uint32_t ptype_tbl[IDPF_MAX_PKT_TYPE]
> __rte_cache_min_aligned;
> +
> +	bool initialized;
> +	bool stopped;
> +};
> +
> +extern struct idpf_adapter *adapter;
> +
> +#define IDPF_DEV_TO_PCI(eth_dev)		\
> +	RTE_DEV_TO_PCI((eth_dev)->device)
> +
> +/* structure used for sending and checking response of virtchnl ops */
> +struct idpf_cmd_info {
> +	uint32_t ops;
> +	uint8_t *in_args;       /* buffer for sending */
> +	uint32_t in_args_size;  /* buffer size for sending */
> +	uint8_t *out_buffer;    /* buffer for response */
> +	uint32_t out_size;      /* buffer size for response */
> +};
> +
> +/* notify current command done. Only call in case execute
> + * _atomic_set_cmd successfully.
> + */
> +static inline void
> +_notify_cmd(struct idpf_adapter *adapter, int msg_ret) {
> +	adapter->cmd_retval = msg_ret;
> +	rte_wmb();
> +	adapter->pend_cmd = VIRTCHNL_OP_UNKNOWN; }
> +
> +/* clear current command. Only call in case execute
> + * _atomic_set_cmd successfully.
> + */
> +static inline void
> +_clear_cmd(struct idpf_adapter *adapter) {
> +	rte_wmb();
> +	adapter->pend_cmd = VIRTCHNL_OP_UNKNOWN;
> +	adapter->cmd_retval = VIRTCHNL_STATUS_SUCCESS; }
> +
> +/* Check there is pending cmd in execution. If none, set new command.
> +*/ static inline int _atomic_set_cmd(struct idpf_adapter *adapter, enum
> +virtchnl_ops ops) {
> +	int ret = rte_atomic32_cmpset(&adapter->pend_cmd,
> VIRTCHNL_OP_UNKNOWN,
> +ops);
> +
> +	if (!ret)
> +		PMD_DRV_LOG(ERR, "There is incomplete cmd %d",
> adapter->pend_cmd);
> +
> +	return !ret;
> +}
> +
> +void idpf_handle_virtchnl_msg(struct rte_eth_dev *dev); int
> +idpf_check_api_version(struct idpf_adapter *adapter); int
> +idpf_get_caps(struct idpf_adapter *adapter); int
> +idpf_create_vport(__rte_unused struct rte_eth_dev *dev); int
> +idpf_destroy_vport(struct idpf_vport *vport); int
> +idpf_ena_dis_vport(struct idpf_vport *vport, bool enable);
> +
> +#endif /* _IDPF_ETHDEV_H_ */
> diff --git a/drivers/net/idpf/idpf_vchnl.c b/drivers/net/idpf/idpf_vchnl.c new
> file mode 100644 index 0000000000..4fc15d5b71
> --- /dev/null
> +++ b/drivers/net/idpf/idpf_vchnl.c
> @@ -0,0 +1,476 @@
> +/* SPDX-License-Identifier: BSD-3-Clause
> + * Copyright(c) 2022 Intel Corporation
> + */
> +
> +#include <stdio.h>
> +#include <errno.h>
> +#include <stdint.h>
> +#include <string.h>
> +#include <unistd.h>
> +#include <stdarg.h>
> +#include <inttypes.h>
> +#include <rte_byteorder.h>
> +#include <rte_common.h>
> +
> +#include <rte_debug.h>
> +#include <rte_atomic.h>
> +#include <rte_eal.h>
> +#include <rte_ether.h>
> +#include <ethdev_driver.h>
> +#include <ethdev_pci.h>
> +#include <rte_dev.h>
> +
> +#include "idpf_ethdev.h"
> +
> +#include "base/iecm_prototype.h"
> +
> +#define IDPF_CTLQ_LEN	64
> +
> +static int
> +idpf_vc_clean(struct idpf_adapter *adapter) {
> +	struct iecm_ctlq_msg *q_msg[IDPF_CTLQ_LEN];
> +	uint16_t num_q_msg = IDPF_CTLQ_LEN;
> +	struct iecm_dma_mem *dma_mem;
> +	int err = 0;
> +	uint32_t i;
> +
> +	for (i = 0; i < 10; i++) {
> +		err = iecm_ctlq_clean_sq(adapter->hw.asq, &num_q_msg,
> q_msg);
> +		msleep(20);
> +		if (num_q_msg)
> +			break;
> +	}
> +	if (err)
> +		goto error;
> +
> +	/* Empty queue is not an error */
> +	for (i = 0; i < num_q_msg; i++) {
> +		dma_mem = q_msg[i]->ctx.indirect.payload;
> +		if (dma_mem) {
> +			iecm_free_dma_mem(&adapter->hw, dma_mem);
> +			rte_free(dma_mem);
> +		}
> +		rte_free(q_msg[i]);
> +	}
> +
> +error:
> +	return err;
> +}
> +
> +static int
> +idpf_send_vc_msg(struct idpf_adapter *adapter, enum virtchnl_ops op,
> +		 uint16_t msg_size, uint8_t *msg)
> +{
> +	struct iecm_ctlq_msg *ctlq_msg;
> +	struct iecm_dma_mem *dma_mem;
> +	int err = 0;
> +
> +	err = idpf_vc_clean(adapter);
> +	if (err)
> +		goto err;
> +
> +	ctlq_msg = (struct iecm_ctlq_msg *)rte_zmalloc(NULL,
> +				sizeof(struct iecm_ctlq_msg), 0);
> +	if (!ctlq_msg) {
> +		err = -ENOMEM;
> +		goto err;
> +	}
> +
> +	dma_mem = (struct iecm_dma_mem *)rte_zmalloc(NULL,
> +				sizeof(struct iecm_dma_mem), 0);
> +	if (!dma_mem) {
> +		err = -ENOMEM;
> +		goto dma_mem_error;
> +	}
> +
> +	dma_mem->size = IDPF_DFLT_MBX_BUF_SIZE;
> +	iecm_alloc_dma_mem(&adapter->hw, dma_mem, dma_mem-
> >size);
> +	if (!dma_mem->va) {
> +		err = -ENOMEM;
> +		goto dma_alloc_error;
> +	}
> +
> +	memcpy(dma_mem->va, msg, msg_size);
> +
> +	ctlq_msg->opcode = iecm_mbq_opc_send_msg_to_pf;
> +	ctlq_msg->func_id = 0;
> +	ctlq_msg->data_len = msg_size;
> +	ctlq_msg->cookie.mbx.chnl_opcode = op;
> +	ctlq_msg->cookie.mbx.chnl_retval = VIRTCHNL_STATUS_SUCCESS;
> +	ctlq_msg->ctx.indirect.payload = dma_mem;
> +
> +	err = iecm_ctlq_send(&adapter->hw, adapter->hw.asq, 1, ctlq_msg);
> +	if (err)
> +		goto send_error;
> +
> +	return err;
> +
> +send_error:
> +	iecm_free_dma_mem(&adapter->hw, dma_mem);
> +dma_alloc_error:
> +	rte_free(dma_mem);
> +dma_mem_error:
> +	rte_free(ctlq_msg);
> +err:
> +	return err;
> +}
> +
> +static enum idpf_vc_result
> +idpf_read_msg_from_ipf(struct idpf_adapter *adapter, uint16_t buf_len,
> +		       uint8_t *buf)
> +{
> +	struct iecm_hw *hw = &adapter->hw;
> +	struct iecm_ctlq_msg ctlq_msg;
> +	struct iecm_dma_mem *dma_mem = NULL;
> +	enum idpf_vc_result result = IDPF_MSG_NON;
> +	enum virtchnl_ops opcode;
> +	uint16_t pending = 1;
> +	int ret;
> +
> +	ret = iecm_ctlq_recv(hw->arq, &pending, &ctlq_msg);
> +	if (ret) {
> +		PMD_DRV_LOG(DEBUG, "Can't read msg from AQ");
> +		if (ret != IECM_ERR_CTLQ_NO_WORK)
> +			result = IDPF_MSG_ERR;
> +		return result;
> +	}
> +
> +	rte_memcpy(buf, ctlq_msg.ctx.indirect.payload->va, buf_len);
> +
> +	opcode = (enum
> virtchnl_ops)rte_le_to_cpu_32(ctlq_msg.cookie.mbx.chnl_opcode);
> +	adapter->cmd_retval =
> +		(enum
> +virtchnl_status_code)rte_le_to_cpu_32(ctlq_msg.cookie.mbx.chnl_retval);
> +
> +	PMD_DRV_LOG(DEBUG, "CQ from ipf carries opcode %u, retval %d",
> +		    opcode, adapter->cmd_retval);
> +
> +	if (opcode == VIRTCHNL2_OP_EVENT) {
> +		struct virtchnl2_event *ve =
> +			(struct virtchnl2_event
> *)ctlq_msg.ctx.indirect.payload->va;
> +
> +		result = IDPF_MSG_SYS;
> +		switch (ve->event) {
> +		case VIRTCHNL2_EVENT_LINK_CHANGE:
> +			/* TBD */
> +			break;
> +		default:
> +			PMD_DRV_LOG(ERR, "%s: Unknown event %d from
> ipf",
> +				    __func__, ve->event);
> +			break;
> +		}
> +	} else {
> +		/* async reply msg on command issued by pf previously */
> +		result = IDPF_MSG_CMD;
> +		if (opcode != adapter->pend_cmd) {
> +			PMD_DRV_LOG(WARNING, "command mismatch,
> expect %u, get %u",
> +				    adapter->pend_cmd, opcode);
> +			result = IDPF_MSG_ERR;
> +		}
> +	}
> +
> +	if (ctlq_msg.data_len)
> +		dma_mem = ctlq_msg.ctx.indirect.payload;
> +	else
> +		pending = 0;
> +
> +	ret = iecm_ctlq_post_rx_buffs(hw, hw->arq, &pending,
> &dma_mem);
> +	if (ret && dma_mem)
> +		iecm_free_dma_mem(hw, dma_mem);
> +
> +	return result;
> +}
> +
> +#define MAX_TRY_TIMES 200
> +#define ASQ_DELAY_MS  10
> +
> +static int
> +idpf_execute_vc_cmd(struct idpf_adapter *adapter, struct idpf_cmd_info
> +*args) {
> +	enum idpf_vc_result result;
> +	int err = 0;
> +	int i = 0;
> +	int ret;
> +
> +	if (_atomic_set_cmd(adapter, args->ops))
> +		return -1;
> +
> +	ret = idpf_send_vc_msg(adapter, args->ops,
> +			       args->in_args_size,
> +			       args->in_args);
> +	if (ret) {
> +		PMD_DRV_LOG(ERR, "fail to send cmd %d", args->ops);
> +		_clear_cmd(adapter);
> +		return ret;
> +	}
> +
> +	switch (args->ops) {
> +	case VIRTCHNL_OP_VERSION:
> +	case VIRTCHNL2_OP_GET_CAPS:
> +	case VIRTCHNL2_OP_CREATE_VPORT:
> +	case VIRTCHNL2_OP_DESTROY_VPORT:
> +	case VIRTCHNL2_OP_SET_RSS_KEY:
> +	case VIRTCHNL2_OP_SET_RSS_LUT:
> +	case VIRTCHNL2_OP_SET_RSS_HASH:
> +	case VIRTCHNL2_OP_CONFIG_RX_QUEUES:
> +	case VIRTCHNL2_OP_CONFIG_TX_QUEUES:
> +	case VIRTCHNL2_OP_ENABLE_QUEUES:
> +	case VIRTCHNL2_OP_DISABLE_QUEUES:
> +	case VIRTCHNL2_OP_ENABLE_VPORT:
> +	case VIRTCHNL2_OP_DISABLE_VPORT:
> +		/* for init virtchnl ops, need to poll the response */
> +		do {
> +			result = idpf_read_msg_from_ipf(adapter,
> +							args->out_size,
> +							args->out_buffer);
> +			if (result == IDPF_MSG_CMD)
> +				break;
> +			rte_delay_ms(ASQ_DELAY_MS);
> +		} while (i++ < MAX_TRY_TIMES);
> +		if (i >= MAX_TRY_TIMES ||
> +		    adapter->cmd_retval != VIRTCHNL_STATUS_SUCCESS) {
> +			err = -1;
> +			PMD_DRV_LOG(ERR, "No response or return failure
> (%d) for cmd %d",
> +				    adapter->cmd_retval, args->ops);
> +		}
> +		_clear_cmd(adapter);
> +		break;
> +	default:
> +		/* For other virtchnl ops in running time,
> +		 * wait for the cmd done flag.
> +		 */
> +		do {
> +			if (adapter->pend_cmd ==
> VIRTCHNL_OP_UNKNOWN)
> +				break;
> +			rte_delay_ms(ASQ_DELAY_MS);
> +			/* If don't read msg or read sys event, continue */
> +		} while (i++ < MAX_TRY_TIMES);
> +		/* If there's no response is received, clear command */
> +		if (i >= MAX_TRY_TIMES  ||
> +		    adapter->cmd_retval != VIRTCHNL_STATUS_SUCCESS) {
> +			err = -1;
> +			PMD_DRV_LOG(ERR, "No response or return failure
> (%d) for cmd %d",
> +				    adapter->cmd_retval, args->ops);
> +			_clear_cmd(adapter);
> +		}
> +		break;
> +	}
> +
> +	return err;
> +}
> +
> +int
> +idpf_check_api_version(struct idpf_adapter *adapter) {
> +	struct virtchnl_version_info version;
> +	struct idpf_cmd_info args;
> +	int err;
> +
> +	memset(&version, 0, sizeof(struct virtchnl_version_info));
> +	version.major = VIRTCHNL_VERSION_MAJOR_2;
> +	version.minor = VIRTCHNL_VERSION_MINOR_0;
> +
> +	args.ops = VIRTCHNL_OP_VERSION;
> +	args.in_args = (uint8_t *)&version;
> +	args.in_args_size = sizeof(version);
> +	args.out_buffer = adapter->mbx_resp;
> +	args.out_size = IDPF_DFLT_MBX_BUF_SIZE;
> +
> +	err = idpf_execute_vc_cmd(adapter, &args);
> +	if (err) {
> +		PMD_DRV_LOG(ERR,
> +			    "Failed to execute command of
> VIRTCHNL_OP_VERSION");
> +		return err;
> +	}
> +
> +	return err;
> +}
> +
> +int
> +idpf_get_caps(struct idpf_adapter *adapter) {
> +	struct virtchnl2_get_capabilities caps_msg;
> +	struct idpf_cmd_info args;
> +	int err;
> +
> +	 memset(&caps_msg, 0, sizeof(struct virtchnl2_get_capabilities));
> +	 caps_msg.csum_caps =
> +		 VIRTCHNL2_CAP_TX_CSUM_L3_IPV4		|
> +		 VIRTCHNL2_CAP_TX_CSUM_L4_IPV4_TCP	|
> +		 VIRTCHNL2_CAP_TX_CSUM_L4_IPV4_UDP	|
> +		 VIRTCHNL2_CAP_TX_CSUM_L4_IPV4_SCTP	|
> +		 VIRTCHNL2_CAP_TX_CSUM_L4_IPV6_TCP	|
> +		 VIRTCHNL2_CAP_TX_CSUM_L4_IPV6_UDP	|
> +		 VIRTCHNL2_CAP_TX_CSUM_L4_IPV6_SCTP	|
> +		 VIRTCHNL2_CAP_TX_CSUM_GENERIC		|
> +		 VIRTCHNL2_CAP_RX_CSUM_L3_IPV4		|
> +		 VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_TCP	|
> +		 VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_UDP	|
> +		 VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_SCTP	|
> +		 VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_TCP	|
> +		 VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_UDP	|
> +		 VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_SCTP	|
> +		 VIRTCHNL2_CAP_RX_CSUM_GENERIC;
> +
> +	 caps_msg.seg_caps =
> +		 VIRTCHNL2_CAP_SEG_IPV4_TCP		|
> +		 VIRTCHNL2_CAP_SEG_IPV4_UDP		|
> +		 VIRTCHNL2_CAP_SEG_IPV4_SCTP		|
> +		 VIRTCHNL2_CAP_SEG_IPV6_TCP		|
> +		 VIRTCHNL2_CAP_SEG_IPV6_UDP		|
> +		 VIRTCHNL2_CAP_SEG_IPV6_SCTP		|
> +		 VIRTCHNL2_CAP_SEG_GENERIC;
> +
> +	 caps_msg.rss_caps =
> +		 VIRTCHNL2_CAP_RSS_IPV4_TCP		|
> +		 VIRTCHNL2_CAP_RSS_IPV4_UDP		|
> +		 VIRTCHNL2_CAP_RSS_IPV4_SCTP		|
> +		 VIRTCHNL2_CAP_RSS_IPV4_OTHER		|
> +		 VIRTCHNL2_CAP_RSS_IPV6_TCP		|
> +		 VIRTCHNL2_CAP_RSS_IPV6_UDP		|
> +		 VIRTCHNL2_CAP_RSS_IPV6_SCTP		|
> +		 VIRTCHNL2_CAP_RSS_IPV6_OTHER		|
> +		 VIRTCHNL2_CAP_RSS_IPV4_AH		|
> +		 VIRTCHNL2_CAP_RSS_IPV4_ESP		|
> +		 VIRTCHNL2_CAP_RSS_IPV4_AH_ESP		|
> +		 VIRTCHNL2_CAP_RSS_IPV6_AH		|
> +		 VIRTCHNL2_CAP_RSS_IPV6_ESP		|
> +		 VIRTCHNL2_CAP_RSS_IPV6_AH_ESP;
> +
> +	 caps_msg.hsplit_caps =
> +		 VIRTCHNL2_CAP_RX_HSPLIT_AT_L2		|
> +		 VIRTCHNL2_CAP_RX_HSPLIT_AT_L3		|
> +		 VIRTCHNL2_CAP_RX_HSPLIT_AT_L4V4	|
> +		 VIRTCHNL2_CAP_RX_HSPLIT_AT_L4V6;
> +
> +	 caps_msg.rsc_caps =
> +		 VIRTCHNL2_CAP_RSC_IPV4_TCP		|
> +		 VIRTCHNL2_CAP_RSC_IPV4_SCTP		|
> +		 VIRTCHNL2_CAP_RSC_IPV6_TCP		|
> +		 VIRTCHNL2_CAP_RSC_IPV6_SCTP;
> +
> +	 caps_msg.other_caps =
> +		 VIRTCHNL2_CAP_RDMA			|
> +		 VIRTCHNL2_CAP_SRIOV			|
> +		 VIRTCHNL2_CAP_MACFILTER		|
> +		 VIRTCHNL2_CAP_FLOW_DIRECTOR		|
> +		 VIRTCHNL2_CAP_SPLITQ_QSCHED		|
> +		 VIRTCHNL2_CAP_CRC			|
> +		 VIRTCHNL2_CAP_WB_ON_ITR		|
> +		 VIRTCHNL2_CAP_PROMISC			|
> +		 VIRTCHNL2_CAP_LINK_SPEED		|
> +		 VIRTCHNL2_CAP_VLAN;
> +
> +	args.ops = VIRTCHNL2_OP_GET_CAPS;
> +	args.in_args = (uint8_t *)&caps_msg;
> +	args.in_args_size = sizeof(caps_msg);
> +	args.out_buffer = adapter->mbx_resp;
> +	args.out_size = IDPF_DFLT_MBX_BUF_SIZE;
> +
> +	err = idpf_execute_vc_cmd(adapter, &args);
> +	if (err) {
> +		PMD_DRV_LOG(ERR,
> +			    "Failed to execute command of
> VIRTCHNL2_OP_GET_CAPS");
> +		return err;
> +	}
> +
> +	rte_memcpy(adapter->caps, args.out_buffer, sizeof(caps_msg));
> +
> +	return err;
> +}
> +
> +int
> +idpf_create_vport(__rte_unused struct rte_eth_dev *dev) {
> +	uint16_t idx = adapter->next_vport_idx;
> +	struct virtchnl2_create_vport *vport_req_info =
> +		(struct virtchnl2_create_vport *)adapter-
> >vport_req_info[idx];
> +	struct virtchnl2_create_vport vport_msg;
> +	struct idpf_cmd_info args;
> +	int err = -1;
> +
> +	memset(&vport_msg, 0, sizeof(struct virtchnl2_create_vport));
> +	vport_msg.vport_type = vport_req_info->vport_type;
> +	vport_msg.txq_model = vport_req_info->txq_model;
> +	vport_msg.rxq_model = vport_req_info->rxq_model;
> +	vport_msg.num_tx_q = vport_req_info->num_tx_q;
> +	vport_msg.num_tx_complq = vport_req_info->num_tx_complq;
> +	vport_msg.num_rx_q = vport_req_info->num_rx_q;
> +	vport_msg.num_rx_bufq = vport_req_info->num_rx_bufq;
> +
> +	memset(&args, 0, sizeof(args));
> +	args.ops = VIRTCHNL2_OP_CREATE_VPORT;
> +	args.in_args = (uint8_t *)&vport_msg;
> +	args.in_args_size = sizeof(vport_msg);
> +	args.out_buffer = adapter->mbx_resp;
> +	args.out_size = IDPF_DFLT_MBX_BUF_SIZE;
> +
> +	err = idpf_execute_vc_cmd(adapter, &args);
> +	if (err) {
> +		PMD_DRV_LOG(ERR,
> +			    "Failed to execute command of
> VIRTCHNL2_OP_CREATE_VPORT");
> +		return err;
> +	}
> +
> +	if (!adapter->vport_recv_info[idx]) {
> +		adapter->vport_recv_info[idx] = rte_zmalloc(NULL,
> +
> IDPF_DFLT_MBX_BUF_SIZE, 0);
> +		if (!adapter->vport_recv_info[idx]) {
> +			PMD_INIT_LOG(ERR, "Failed to alloc
> vport_recv_info.");
> +			return err;
> +		}
> +	}
> +	rte_memcpy(adapter->vport_recv_info[idx], args.out_buffer,
> +		   IDPF_DFLT_MBX_BUF_SIZE);
> +	return err;
> +}
> +
> +int
> +idpf_destroy_vport(struct idpf_vport *vport) {
> +	struct virtchnl2_vport vc_vport;
> +	struct idpf_cmd_info args;
> +	int err;
> +
> +	vc_vport.vport_id = vport->vport_id;
> +
> +	memset(&args, 0, sizeof(args));
> +	args.ops = VIRTCHNL2_OP_DESTROY_VPORT;
> +	args.in_args = (uint8_t *)&vc_vport;
> +	args.in_args_size = sizeof(vc_vport);
> +	args.out_buffer = adapter->mbx_resp;
> +	args.out_size = IDPF_DFLT_MBX_BUF_SIZE;
> +
> +	err = idpf_execute_vc_cmd(adapter, &args);
> +	if (err) {
> +		PMD_DRV_LOG(ERR, "Failed to execute command of
> VIRTCHNL2_OP_DESTROY_VPORT");
> +		return err;
> +	}
> +
> +	return err;
> +}
> +
> +int
> +idpf_ena_dis_vport(struct idpf_vport *vport, bool enable) {
> +	struct virtchnl2_vport vc_vport;
> +	struct idpf_cmd_info args;
> +	int err;
> +
> +	vc_vport.vport_id = vport->vport_id;
> +	args.ops = enable ? VIRTCHNL2_OP_ENABLE_VPORT :
> +			    VIRTCHNL2_OP_DISABLE_VPORT;
> +	args.in_args = (u8 *)&vc_vport;
> +	args.in_args_size = sizeof(vc_vport);
> +	args.out_buffer = adapter->mbx_resp;
> +	args.out_size = IDPF_DFLT_MBX_BUF_SIZE;
> +
> +	err = idpf_execute_vc_cmd(adapter, &args);
> +	if (err) {
> +		PMD_DRV_LOG(ERR, "Failed to execute command of
> VIRTCHNL2_OP_%s_VPORT",
> +			    enable ? "ENABLE" : "DISABLE");
> +	}
> +
> +	return err;
> +}
> +
> diff --git a/drivers/net/idpf/meson.build b/drivers/net/idpf/meson.build
> new file mode 100644 index 0000000000..3a84162f93
> --- /dev/null
> +++ b/drivers/net/idpf/meson.build
> @@ -0,0 +1,18 @@
> +# SPDX-License-Identifier: BSD-3-Clause # Copyright(c) 2022 Intel
> +Corporation
> +
> +if is_windows
> +	build = false
> +	reason = 'not supported on Windows'
> +	subdir_done()
> +endif
> +
> +subdir('base')
> +objs = [base_objs]
> +
> +sources = files(
> +	'idpf_ethdev.c',
> +	'idpf_vchnl.c',
> +)
> +
> +includes += include_directories('base')
> diff --git a/drivers/net/idpf/version.map b/drivers/net/idpf/version.map
> new file mode 100644 index 0000000000..b7da224860
> --- /dev/null
> +++ b/drivers/net/idpf/version.map
> @@ -0,0 +1,3 @@
> +DPDK_22 {
> +	local: *;
> +};
> \ No newline at end of file
> diff --git a/drivers/net/meson.build b/drivers/net/meson.build index
> e35652fe63..8910154544 100644
> --- a/drivers/net/meson.build
> +++ b/drivers/net/meson.build
> @@ -28,6 +28,7 @@ drivers = [
>          'i40e',
>          'iavf',
>          'ice',
> +        'idpf',
>          'igc',
>          'ionic',
>          'ipn3ke',
> --
> 2.25.1
I'd like to report that this patch is causing a compilation failure over the main tree 22.11-rc2:

this is the failure which I see:
ing-field-initializers -D_GNU_SOURCE -fPIC -march=native -mno-avx512f -mno-avx512f -DALLOW_EXPERIMENTAL_API -DALLOW_INTERNAL_API -DRTE_LOG_DEFAULT_LOGTYPE=pmd.net.idpf -MD -MQ drivers/libtmp_rte_net_idpf.a.p/net_idpf_idpf_vchnl.c.o -MF drivers/libtmp_rte_net_idpf.a.p/net_idpf_idpf_vchnl.c.o.d -o drivers/libtmp_rte_net_idpf.a.p/net_idpf_idpf_vchnl.c.o -c ../../root/dpdk/drivers/net/idpf/idpf_vchnl.c
../../root/dpdk/drivers/net/idpf/idpf_vchnl.c:142:13: error: comparison of constant 522 with expression of type 'enum virtchnl_ops' is always false [-Werror,-Wtautological-constant-out-of-range-compare]
        if (opcode == VIRTCHNL2_OP_EVENT) {
            ~~~~~~ ^  ~~~~~~~~~~~~~~~~~~
1 error generated.
[1424/2559] Generating eal.sym_chk with a meson_exe.py custom command
ninja: build stopped: subcommand failed.

And it's happening with the CLANG compiler:
clang version 3.4.2 (tags/RELEASE_34/dot2-final)

Kindest regards,
Raslan Darawsheh