Re: [dpdk-dev] [PATCH v4 4/7] move rte_eth_dev_check_mq_mode() logic to driver

["Ouyang, Changchun" <changchun.ouyang@intel.com>]

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Pawel Wodkowski
> Sent: Thursday, February 19, 2015 11:55 PM
> To: dev@dpdk.org
> Subject: [dpdk-dev] [PATCH v4 4/7] move rte_eth_dev_check_mq_mode()
> logic to driver
> 
> Function rte_eth_dev_check_mq_mode() is driver specific. It should be
> done in PF configuration phase. This patch move igb/ixgbe driver specific mq
> check and SRIOV configuration code to driver part. Also rewriting log
> messages to be shorter and more descriptive.
> 
> Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
> ---
>  lib/librte_ether/rte_ethdev.c       | 197 -----------------------------------
>  lib/librte_pmd_e1000/igb_ethdev.c   |  43 ++++++++
>  lib/librte_pmd_ixgbe/ixgbe_ethdev.c | 105 ++++++++++++++++++-
>  lib/librte_pmd_ixgbe/ixgbe_ethdev.h |   5 +-
>  lib/librte_pmd_ixgbe/ixgbe_pf.c     | 202
> +++++++++++++++++++++++++++++++-----
>  5 files changed, 327 insertions(+), 225 deletions(-)
> 
> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> index 4007054..aa27e39 100644
> --- a/lib/librte_ether/rte_ethdev.c
> +++ b/lib/librte_ether/rte_ethdev.c
> @@ -502,195 +502,6 @@ rte_eth_dev_tx_queue_config(struct rte_eth_dev
> *dev, uint16_t nb_queues)
>  	return (0);
>  }
> 
> -static int
> -rte_eth_dev_check_vf_rss_rxq_num(uint8_t port_id, uint16_t nb_rx_q) -{
> -	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
> -	switch (nb_rx_q) {
> -	case 1:
> -	case 2:
> -		RTE_ETH_DEV_SRIOV(dev).active =
> -			ETH_64_POOLS;
> -		break;
> -	case 4:
> -		RTE_ETH_DEV_SRIOV(dev).active =
> -			ETH_32_POOLS;
> -		break;
> -	default:
> -		return -EINVAL;
> -	}
> -
> -	RTE_ETH_DEV_SRIOV(dev).nb_rx_q_per_pool = nb_rx_q;
> -	RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx =
> -		dev->pci_dev->max_vfs * nb_rx_q;
> -
> -	return 0;
> -}
> -
> -static int
> -rte_eth_dev_check_mq_mode(uint8_t port_id, uint16_t nb_rx_q, uint16_t
> nb_tx_q,
> -		      const struct rte_eth_conf *dev_conf)
> -{
> -	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
> -
> -	if (RTE_ETH_DEV_SRIOV(dev).active != 0) {
> -		/* check multi-queue mode */
> -		if ((dev_conf->rxmode.mq_mode == ETH_MQ_RX_DCB) ||
> -		    (dev_conf->rxmode.mq_mode == ETH_MQ_RX_DCB_RSS)
> ||
> -		    (dev_conf->txmode.mq_mode == ETH_MQ_TX_DCB)) {
> -			/* SRIOV only works in VMDq enable mode */
> -			PMD_DEBUG_TRACE("ethdev port_id=%" PRIu8
> -					" SRIOV active, "
> -					"wrong VMDQ mq_mode rx %u
> tx %u\n",
> -					port_id,
> -					dev_conf->rxmode.mq_mode,
> -					dev_conf->txmode.mq_mode);
> -			return (-EINVAL);
> -		}
> -
> -		switch (dev_conf->rxmode.mq_mode) {
> -		case ETH_MQ_RX_VMDQ_DCB:
> -		case ETH_MQ_RX_VMDQ_DCB_RSS:
> -			/* DCB/RSS VMDQ in SRIOV mode, not implement
> yet */
> -			PMD_DEBUG_TRACE("ethdev port_id=%" PRIu8
> -					" SRIOV active, "
> -					"unsupported VMDQ mq_mode
> rx %u\n",
> -					port_id, dev_conf-
> >rxmode.mq_mode);
> -			return (-EINVAL);
> -		case ETH_MQ_RX_RSS:
> -			PMD_DEBUG_TRACE("ethdev port_id=%" PRIu8
> -					" SRIOV active, "
> -					"Rx mq mode is changed from:"
> -					"mq_mode %u into VMDQ
> mq_mode %u\n",
> -					port_id,
> -					dev_conf->rxmode.mq_mode,
> -					dev->data-
> >dev_conf.rxmode.mq_mode);
> -		case ETH_MQ_RX_VMDQ_RSS:
> -			dev->data->dev_conf.rxmode.mq_mode =
> ETH_MQ_RX_VMDQ_RSS;
> -			if (nb_rx_q <=
> RTE_ETH_DEV_SRIOV(dev).nb_rx_q_per_pool)
> -				if
> (rte_eth_dev_check_vf_rss_rxq_num(port_id, nb_rx_q) != 0) {
> -					PMD_DEBUG_TRACE("ethdev
> port_id=%d"
> -						" SRIOV active, invalid queue"
> -						" number for VMDQ RSS,
> allowed"
> -						" value are 1, 2 or 4\n",
> -						port_id);
> -					return -EINVAL;
> -				}
> -			break;
> -		default: /* ETH_MQ_RX_VMDQ_ONLY or
> ETH_MQ_RX_NONE */
> -			/* if nothing mq mode configure, use default scheme
> */
> -			dev->data->dev_conf.rxmode.mq_mode =
> ETH_MQ_RX_VMDQ_ONLY;
> -			if (RTE_ETH_DEV_SRIOV(dev).nb_rx_q_per_pool > 1)
> -
> 	RTE_ETH_DEV_SRIOV(dev).nb_rx_q_per_pool = 1;
> -			break;
> -		}
> -
> -		switch (dev_conf->txmode.mq_mode) {
> -		case ETH_MQ_TX_VMDQ_DCB:
> -			/* DCB VMDQ in SRIOV mode, not implement yet */
> -			PMD_DEBUG_TRACE("ethdev port_id=%" PRIu8
> -					" SRIOV active, "
> -					"unsupported VMDQ mq_mode
> tx %u\n",
> -					port_id, dev_conf-
> >txmode.mq_mode);
> -			return (-EINVAL);
> -		default: /* ETH_MQ_TX_VMDQ_ONLY or
> ETH_MQ_TX_NONE */
> -			/* if nothing mq mode configure, use default scheme
> */
> -			dev->data->dev_conf.txmode.mq_mode =
> ETH_MQ_TX_VMDQ_ONLY;
> -			break;
> -		}
> -
> -		/* check valid queue number */
> -		if ((nb_rx_q > RTE_ETH_DEV_SRIOV(dev).nb_tx_q_per_pool)
> ||
> -		    (nb_tx_q > RTE_ETH_DEV_SRIOV(dev).nb_tx_q_per_pool))
> {
> -			PMD_DEBUG_TRACE("ethdev port_id=%d SRIOV
> active, "
> -				    "queue number must less equal to %d\n",
> -					port_id,
> RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool);
> -			return (-EINVAL);
> -		}
> -	} else {
> -		/* For vmdb+dcb mode check our configuration before we
> go further */
> -		if (dev_conf->rxmode.mq_mode ==
> ETH_MQ_RX_VMDQ_DCB) {
> -			const struct rte_eth_vmdq_dcb_conf *conf;
> -
> -			if (nb_rx_q != ETH_VMDQ_DCB_NUM_QUEUES) {
> -				PMD_DEBUG_TRACE("ethdev port_id=%d
> VMDQ+DCB, nb_rx_q "
> -						"!= %d\n",
> -						port_id,
> ETH_VMDQ_DCB_NUM_QUEUES);
> -				return (-EINVAL);
> -			}
> -			conf = &(dev_conf->rx_adv_conf.vmdq_dcb_conf);
> -			if (! (conf->nb_queue_pools == ETH_16_POOLS ||
> -			       conf->nb_queue_pools == ETH_32_POOLS)) {
> -				PMD_DEBUG_TRACE("ethdev port_id=%d
> VMDQ+DCB selected, "
> -						"nb_queue_pools must
> be %d or %d\n",
> -						port_id, ETH_16_POOLS,
> ETH_32_POOLS);
> -				return (-EINVAL);
> -			}
> -		}
> -		if (dev_conf->txmode.mq_mode ==
> ETH_MQ_TX_VMDQ_DCB) {
> -			const struct rte_eth_vmdq_dcb_tx_conf *conf;
> -
> -			if (nb_tx_q != ETH_VMDQ_DCB_NUM_QUEUES) {
> -				PMD_DEBUG_TRACE("ethdev port_id=%d
> VMDQ+DCB, nb_tx_q "
> -						"!= %d\n",
> -						port_id,
> ETH_VMDQ_DCB_NUM_QUEUES);
> -				return (-EINVAL);
> -			}
> -			conf = &(dev_conf-
> >tx_adv_conf.vmdq_dcb_tx_conf);
> -			if (! (conf->nb_queue_pools == ETH_16_POOLS ||
> -			       conf->nb_queue_pools == ETH_32_POOLS)) {
> -				PMD_DEBUG_TRACE("ethdev port_id=%d
> VMDQ+DCB selected, "
> -						"nb_queue_pools != %d or
> nb_queue_pools "
> -						"!= %d\n",
> -						port_id, ETH_16_POOLS,
> ETH_32_POOLS);
> -				return (-EINVAL);
> -			}
> -		}
> -
> -		/* For DCB mode check our configuration before we go
> further */
> -		if (dev_conf->rxmode.mq_mode == ETH_MQ_RX_DCB) {
> -			const struct rte_eth_dcb_rx_conf *conf;
> -
> -			if (nb_rx_q != ETH_DCB_NUM_QUEUES) {
> -				PMD_DEBUG_TRACE("ethdev port_id=%d
> DCB, nb_rx_q "
> -						"!= %d\n",
> -						port_id,
> ETH_DCB_NUM_QUEUES);
> -				return (-EINVAL);
> -			}
> -			conf = &(dev_conf->rx_adv_conf.dcb_rx_conf);
> -			if (! (conf->nb_tcs == ETH_4_TCS ||
> -			       conf->nb_tcs == ETH_8_TCS)) {
> -				PMD_DEBUG_TRACE("ethdev port_id=%d
> DCB selected, "
> -						"nb_tcs != %d or nb_tcs "
> -						"!= %d\n",
> -						port_id, ETH_4_TCS,
> ETH_8_TCS);
> -				return (-EINVAL);
> -			}
> -		}
> -
> -		if (dev_conf->txmode.mq_mode == ETH_MQ_TX_DCB) {
> -			const struct rte_eth_dcb_tx_conf *conf;
> -
> -			if (nb_tx_q != ETH_DCB_NUM_QUEUES) {
> -				PMD_DEBUG_TRACE("ethdev port_id=%d
> DCB, nb_tx_q "
> -						"!= %d\n",
> -						port_id,
> ETH_DCB_NUM_QUEUES);
> -				return (-EINVAL);
> -			}
> -			conf = &(dev_conf->tx_adv_conf.dcb_tx_conf);
> -			if (! (conf->nb_tcs == ETH_4_TCS ||
> -			       conf->nb_tcs == ETH_8_TCS)) {
> -				PMD_DEBUG_TRACE("ethdev port_id=%d
> DCB selected, "
> -						"nb_tcs != %d or nb_tcs "
> -						"!= %d\n",
> -						port_id, ETH_4_TCS,
> ETH_8_TCS);
> -				return (-EINVAL);
> -			}
> -		}
> -	}
> -	return 0;
> -}
> -
>  int
>  rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
>  		      const struct rte_eth_conf *dev_conf) @@ -798,14 +609,6
> @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t
> nb_tx_q,
>  							ETHER_MAX_LEN;
>  	}
> 
> -	/* multipe queue mode checking */
> -	diag = rte_eth_dev_check_mq_mode(port_id, nb_rx_q, nb_tx_q,
> dev_conf);
> -	if (diag != 0) {
> -		PMD_DEBUG_TRACE("port%d
> rte_eth_dev_check_mq_mode = %d\n",
> -				port_id, diag);
> -		return diag;
> -	}
> -
>  	/*
>  	 * Setup new number of RX/TX queues and reconfigure device.
>  	 */
> diff --git a/lib/librte_pmd_e1000/igb_ethdev.c
> b/lib/librte_pmd_e1000/igb_ethdev.c
> index d451086..5c922df 100644
> --- a/lib/librte_pmd_e1000/igb_ethdev.c
> +++ b/lib/librte_pmd_e1000/igb_ethdev.c
> @@ -742,6 +742,49 @@ eth_igb_configure(struct rte_eth_dev *dev)
>  	struct e1000_interrupt *intr =
>  		E1000_DEV_PRIVATE_TO_INTR(dev->data->dev_private);
> 
> +	enum rte_eth_rx_mq_mode rx_mq_mode = dev->data-
> >dev_conf.rxmode.mq_mode;
> +	enum rte_eth_tx_mq_mode tx_mq_mode =
> +dev->data->dev_conf.txmode.mq_mode;
> +
> +	if (RTE_ETH_DEV_SRIOV(dev).active != 0) {
> +		/* Check multi-queue mode.
> +		 * To no break software we accept ETH_MQ_RX_NONE as
> this might be used
> +		 * to turn off VLAN filter.
> +		 *
> +		 * FIXME if support RSS together with VMDq & SRIOV
> +		 */
> +		if (rx_mq_mode != ETH_MQ_RX_NONE &&
> +				(rx_mq_mode & ETH_MQ_RX_VMDQ_ONLY)
> == 0) {
> +			PMD_INIT_LOG(WARNING, " SRIOV active, RX
> mode %d is not supported."
> +					"Driver will behave as in %d mode as
> fallback.",
> +					rx_mq_mode, ETH_MQ_RX_NONE);
> +		}
> +
> +		/* TX mode is not used in in this driver so mode might be
> ignored.*/
> +		if (tx_mq_mode != ETH_MQ_TX_VMDQ_ONLY) {
> +			/* SRIOV only works in VMDq enable mode */
> +			PMD_INIT_LOG(WARNING, "TX mode %d is not
> supported in SRIOV. "
> +					"Driver will behave as in %d mode as
> fallback.",
> +					tx_mq_mode,
> ETH_MQ_TX_VMDQ_ONLY);
> +		}
> +	} else {
> +		/*
> +		 * To no break software that set invalid mode, only display
> warning if
> +		 * invalid mode is used.
> +		 */
> +		if ((rx_mq_mode & (ETH_MQ_RX_RSS_FLAG |
> ETH_MQ_RX_VMDQ_FLAG))
> +				!= rx_mq_mode) {
> +			PMD_INIT_LOG(WARNING, "RX mode %d is not
> supported. Driver will "
> +					"behave as in %d mode as fallback.",
> rx_mq_mode,
> +					rx_mq_mode &
> (ETH_MQ_RX_RSS_FLAG | ETH_MQ_RX_VMDQ_FLAG));
> +		}
> +
> +		if (tx_mq_mode != ETH_MQ_TX_NONE) {
> +			PMD_INIT_LOG(WARNING, "TX mode %d is not
> supported."
> +					"Driver will behave as in %d mode as
> fallback.",
> +					tx_mq_mode, ETH_MQ_TX_NONE);
> +		}
> +	}
> +

Better to have new function for these new codes.

>  	PMD_INIT_FUNC_TRACE();
>  	intr->flags |= E1000_FLAG_NEED_LINK_UPDATE;
>  	PMD_INIT_FUNC_TRACE();
> diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
> b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
> index 02b9cda..8e9da3b 100644
> --- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
> +++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
> @@ -863,7 +863,8 @@ eth_ixgbe_dev_init(__attribute__((unused)) struct
> eth_driver *eth_drv,
>  			"Failed to allocate %u bytes needed to store "
>  			"MAC addresses",
>  			ETHER_ADDR_LEN * hw->mac.num_rar_entries);
> -		return -ENOMEM;
> +		diag = -ENOMEM;
> +		goto error;
>  	}
>  	/* Copy the permanent MAC address */
>  	ether_addr_copy((struct ether_addr *) hw->mac.perm_addr, @@ -
> 876,7 +877,8 @@ eth_ixgbe_dev_init(__attribute__((unused)) struct
> eth_driver *eth_drv,
>  		PMD_INIT_LOG(ERR,
>  			"Failed to allocate %d bytes needed to store MAC
> addresses",
>  			ETHER_ADDR_LEN * IXGBE_VMDQ_NUM_UC_MAC);
> -		return -ENOMEM;
> +		diag = -ENOMEM;
> +		goto error;
>  	}
> 
>  	/* initialize the vfta */
> @@ -886,7 +888,13 @@ eth_ixgbe_dev_init(__attribute__((unused)) struct
> eth_driver *eth_drv,
>  	memset(hwstrip, 0, sizeof(*hwstrip));
> 
>  	/* initialize PF if max_vfs not zero */
> -	ixgbe_pf_host_init(eth_dev);
> +	diag = ixgbe_pf_host_init(eth_dev);
> +	if (diag < 0) {
> +		PMD_INIT_LOG(ERR,
> +			"Failed to allocate %d bytes needed to store MAC
> addresses",
> +			ETHER_ADDR_LEN * IXGBE_VMDQ_NUM_UC_MAC);
> +		goto error;
> +	}
> 
>  	ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
>  	/* let hardware know driver is loaded */ @@ -918,6 +926,11 @@
> eth_ixgbe_dev_init(__attribute__((unused)) struct eth_driver *eth_drv,
>  	ixgbe_enable_intr(eth_dev);
> 
>  	return 0;
> +
> +error:
> +	rte_free(eth_dev->data->hash_mac_addrs);
> +	rte_free(eth_dev->data->mac_addrs);
> +	return diag;
>  }
> 
> 
> @@ -1434,7 +1447,93 @@ ixgbe_dev_configure(struct rte_eth_dev *dev)
>  	struct ixgbe_interrupt *intr =
>  		IXGBE_DEV_PRIVATE_TO_INTR(dev->data->dev_private);
> 
> +	struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
> +	struct rte_eth_dev_info dev_info;
> +	int retval;
> +
>  	PMD_INIT_FUNC_TRACE();
> +	retval = ixgbe_pf_configure_mq_sriov(dev);

Do we need a non-sriov version to configure mq mode?
In ixgbe_pf_configure_mq_sriov, in the case of no vf,
It will early return, then no chance to configure and check mq mode and queue number.
Do I miss anything here?  

> +	if (retval <= 0)
> +		return retval;
> +
> +	uint16_t nb_rx_q = dev->data->nb_rx_queues;
> +	uint16_t nb_tx_q = dev->data->nb_rx_queues;

Rx or tx here?

> +
> +	/* For DCB we need to obtain maximum number of queues
> dinamically,
> +	 * as this depends on max VF exported in PF. */
> +	if ((dev_conf->rxmode.mq_mode == ETH_MQ_RX_DCB) ||
> +		(dev_conf->txmode.mq_mode == ETH_MQ_TX_DCB)) {
> +		/* Use dev_infos_get field as this might be pointer to PF or
> VF. */
> +		(*dev->dev_ops->dev_infos_get)(dev, &dev_info);
> +	}
> +
> +	/* For vmdq+dcb mode check our configuration before we go further
> */
> +	if (dev_conf->rxmode.mq_mode == ETH_MQ_RX_VMDQ_DCB) {
> +		const struct rte_eth_vmdq_dcb_conf *conf;
> +
> +		if (nb_rx_q != ETH_VMDQ_DCB_NUM_QUEUES) {
> +			PMD_INIT_LOG(ERR, " VMDQ+DCB,
> nb_rx_q != %d\n",
> +					ETH_VMDQ_DCB_NUM_QUEUES);
> +			return (-EINVAL);
> +		}
> +		conf = &(dev_conf->rx_adv_conf.vmdq_dcb_conf);
> +		if (conf->nb_queue_pools != ETH_16_POOLS &&
> +				conf->nb_queue_pools != ETH_32_POOLS) {
> +			PMD_INIT_LOG(ERR, " VMDQ+DCB selected, "
> +					"number of RX queue pools must
> be %d or %d\n",
> +					ETH_16_POOLS, ETH_32_POOLS);
> +			return (-EINVAL);
> +		}
> +	} else if (dev_conf->rxmode.mq_mode == ETH_MQ_RX_DCB) {
> +		/* For DCB mode check out configuration before we go
> further */
> +		const struct rte_eth_dcb_rx_conf *conf;
> +
> +		if (nb_rx_q != dev_info.max_rx_queues) {
> +			PMD_INIT_LOG(ERR, " DCB, number of RX
> queues != %d\n",
> +					ETH_DCB_NUM_QUEUES);
> +			return (-EINVAL);
> +		}
> +		conf = &(dev_conf->rx_adv_conf.dcb_rx_conf);
> +		if (conf->nb_tcs != ETH_4_TCS &&
> +			   conf->nb_tcs != ETH_8_TCS) {
> +			PMD_INIT_LOG(ERR, " DCB, number of RX TC must
> be %d or %d\n",
> +					ETH_4_TCS, ETH_8_TCS);
> +			return (-EINVAL);
> +		}
> +	}
> +
> +	if (dev_conf->txmode.mq_mode == ETH_MQ_TX_VMDQ_DCB) {
> +		const struct rte_eth_vmdq_dcb_tx_conf *conf;
> +
> +		if (nb_tx_q != ETH_VMDQ_DCB_NUM_QUEUES) {
> +			PMD_INIT_LOG(ERR, " VMDQ+DCB, number of TX
> queues != %d\n",
> +					ETH_VMDQ_DCB_NUM_QUEUES);
> +			return (-EINVAL);
> +		}
> +		conf = &(dev_conf->tx_adv_conf.vmdq_dcb_tx_conf);
> +		if (conf->nb_queue_pools != ETH_16_POOLS &&
> +			   conf->nb_queue_pools != ETH_32_POOLS) {
> +			PMD_INIT_LOG(ERR, " VMDQ+DCB selected, "
> +					"number of TX qqueue pools must
> be %d or %d\n",
> +					ETH_16_POOLS, ETH_32_POOLS);
> +			return (-EINVAL);
> +		}
> +	} else if (dev_conf->txmode.mq_mode == ETH_MQ_TX_DCB) {
> +		const struct rte_eth_dcb_tx_conf *conf;
> +
> +		if (nb_tx_q != dev_info.max_tx_queues) {
> +			PMD_INIT_LOG(ERR, " DCB, number of queues must
> be %d\n",
> +					ETH_DCB_NUM_QUEUES);
> +			return (-EINVAL);
> +		}
> +		conf = &(dev_conf->tx_adv_conf.dcb_tx_conf);
> +		if (conf->nb_tcs != ETH_4_TCS &&
> +			   conf->nb_tcs != ETH_8_TCS) {
> +			PMD_INIT_LOG(ERR, " DCB, number of TX TC must
> be %d or %d\n",
> +					ETH_4_TCS, ETH_8_TCS);
> +			return (-EINVAL);
> +		}
> +	}

Better to have a separate function for these new codes.

> 
>  	/* set flag to update link status after init */
>  	intr->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; diff --git
> a/lib/librte_pmd_ixgbe/ixgbe_ethdev.h
> b/lib/librte_pmd_ixgbe/ixgbe_ethdev.h
> index 1383194..e70a6e8 100644
> --- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.h
> +++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.h
> @@ -348,11 +348,14 @@ void ixgbe_vlan_hw_strip_enable_all(struct
> rte_eth_dev *dev);
> 
>  void ixgbe_vlan_hw_strip_disable_all(struct rte_eth_dev *dev);
> 
> -void ixgbe_pf_host_init(struct rte_eth_dev *eth_dev);
> +int ixgbe_pf_host_init(struct rte_eth_dev *eth_dev);
> 
>  void ixgbe_pf_mbx_process(struct rte_eth_dev *eth_dev);
> 
> +int ixgbe_pf_configure_mq_sriov(struct rte_eth_dev *dev);
> +
>  int ixgbe_pf_host_configure(struct rte_eth_dev *eth_dev);
> 
>  uint32_t ixgbe_convert_vm_rx_mask_to_val(uint16_t rx_mask, uint32_t
> orig_val);
> +
>  #endif /* _IXGBE_ETHDEV_H_ */
> diff --git a/lib/librte_pmd_ixgbe/ixgbe_pf.c
> b/lib/librte_pmd_ixgbe/ixgbe_pf.c index 4103e97..a7b9333 100644
> --- a/lib/librte_pmd_ixgbe/ixgbe_pf.c
> +++ b/lib/librte_pmd_ixgbe/ixgbe_pf.c
> @@ -91,7 +91,7 @@ ixgbe_mb_intr_setup(struct rte_eth_dev *dev)
>  	return 0;
>  }
> 
> -void ixgbe_pf_host_init(struct rte_eth_dev *eth_dev)
> +int ixgbe_pf_host_init(struct rte_eth_dev *eth_dev)
>  {
>  	struct ixgbe_vf_info **vfinfo =
>  		IXGBE_DEV_PRIVATE_TO_P_VFDATA(eth_dev->data-
> >dev_private);
> @@ -101,39 +101,31 @@ void ixgbe_pf_host_init(struct rte_eth_dev
> *eth_dev)
>          IXGBE_DEV_PRIVATE_TO_UTA(eth_dev->data->dev_private);
>  	struct ixgbe_hw *hw =
>  		IXGBE_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
> +	int retval;
>  	uint16_t vf_num;
> -	uint8_t nb_queue;
> 
>  	PMD_INIT_FUNC_TRACE();
> 
> -	RTE_ETH_DEV_SRIOV(eth_dev).active = 0;
> -	if (0 == (vf_num = dev_num_vf(eth_dev)))
> -		return;
> +	/* Fill sriov structure using default configuration. */
> +	retval = ixgbe_pf_configure_mq_sriov(eth_dev);
> +	if (retval != 0) {
> +		if (retval < 0)
> +			PMD_INIT_LOG(ERR, " Setting up SRIOV with default
> device "
> +					"configuration should not fail. This is a
> BUG.");
> +		return 0;
> +	}
> 
> +	vf_num = dev_num_vf(eth_dev);
>  	*vfinfo = rte_zmalloc("vf_info", sizeof(struct ixgbe_vf_info) *
> vf_num, 0);
> -	if (*vfinfo == NULL)
> -		rte_panic("Cannot allocate memory for private VF data\n");
> +	if (*vfinfo == NULL) {
> +		PMD_INIT_LOG(ERR, "Cannot allocate memory for private VF
> data.");
> +		return (-ENOMEM);
> +	}
> 
>  	memset(mirror_info,0,sizeof(struct ixgbe_mirror_info));
>  	memset(uta_info,0,sizeof(struct ixgbe_uta_info));
>  	hw->mac.mc_filter_type = 0;
> 
> -	if (vf_num >= ETH_32_POOLS) {
> -		nb_queue = 2;
> -		RTE_ETH_DEV_SRIOV(eth_dev).active = ETH_64_POOLS;
> -	} else if (vf_num >= ETH_16_POOLS) {
> -		nb_queue = 4;
> -		RTE_ETH_DEV_SRIOV(eth_dev).active = ETH_32_POOLS;
> -	} else {
> -		nb_queue = 8;
> -		RTE_ETH_DEV_SRIOV(eth_dev).active = ETH_16_POOLS;
> -	}
> -
> -	RTE_ETH_DEV_SRIOV(eth_dev).nb_rx_q_per_pool = nb_queue;
> -	RTE_ETH_DEV_SRIOV(eth_dev).nb_tx_q_per_pool = nb_queue;
> -	RTE_ETH_DEV_SRIOV(eth_dev).def_vmdq_idx = vf_num;
> -	RTE_ETH_DEV_SRIOV(eth_dev).def_pool_q_idx =
> (uint16_t)(vf_num * nb_queue);
> -
>  	ixgbe_vf_perm_addr_gen(eth_dev, vf_num);
> 
>  	/* init_mailbox_params */
> @@ -142,7 +134,169 @@ void ixgbe_pf_host_init(struct rte_eth_dev
> *eth_dev)
>  	/* set mb interrupt mask */
>  	ixgbe_mb_intr_setup(eth_dev);
> 
> -	return;
> +	return 0;
> +}
> +
> +
> +/*
> + * Function that make SRIOV configuration, based on device
> +configuration,
> + * number of requested queues and number of VF created.
> + * Function returns:
> + * 1 - SRIOV is not enabled (no VF created)
> + * 0 - proper SRIOV configuration found.
> + * -EINVAL - no suitable SRIOV configuration found.
> + */
> +int
> +ixgbe_pf_configure_mq_sriov(struct rte_eth_dev *dev) {
> +	struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
> +	struct rte_eth_dev_sriov *sriov = &RTE_ETH_DEV_SRIOV(dev);
> +	uint16_t vf_num;
> +
> +	vf_num = dev_num_vf(dev);
> +	if (vf_num == 0) {
> +		memset(sriov, 0, sizeof(*sriov));
> +		return 1;
> +	}
> +
> +	/* Check multi-queue mode. */
> +	if ((dev_conf->rxmode.mq_mode == ETH_MQ_RX_DCB) ||
> +		(dev_conf->rxmode.mq_mode == ETH_MQ_RX_DCB_RSS)
> ||
> +		(dev_conf->txmode.mq_mode == ETH_MQ_TX_DCB)) {
> +		/* SRIOV only works in VMDq enable mode */
> +		PMD_INIT_LOG(ERR, " SRIOV active, "
> +				"invlaid VMDQ rx mode (%u) or tx (%u)
> mode.",
> +				dev_conf->rxmode.mq_mode, dev_conf-
> >txmode.mq_mode);
> +		return (-EINVAL);
> +	}
> +
> +	switch (dev_conf->rxmode.mq_mode) {
> +	case ETH_MQ_RX_VMDQ_DCB:
> +		if (vf_num <= ETH_16_POOLS)
> +			sriov->nb_rx_q_per_pool = 8;
> +		else if (vf_num <= ETH_32_POOLS)
> +			sriov->nb_rx_q_per_pool = 4;
> +		else {
> +			PMD_INIT_LOG(ERR,
> +				"DCB (SRIOV active) - VF count (%d) must be
> less or equal 32.",
> +				vf_num);
> +			return (-EINVAL);
> +		}
> +
> +		if (dev->data->nb_rx_queues < sriov->nb_rx_q_per_pool) {
> +			PMD_INIT_LOG(WARNING,
> +				"DCB (SRIOV active) rx queues (%d) count is
> not equal %d.",
> +				dev->data->nb_rx_queues,
> +				sriov->nb_rx_q_per_pool);
> +		}
> +		break;
> +	case ETH_MQ_RX_RSS:
> +		PMD_INIT_LOG(INFO, "RSS (SRIOV active), "
> +				"rx mq mode is changed from: mq_mode %u
> into VMDQ mq_mode %u.",
> +				dev_conf->rxmode.mq_mode, dev->data-
> >dev_conf.rxmode.mq_mode);
> +		dev->data->dev_conf.rxmode.mq_mode =
> ETH_MQ_RX_VMDQ_RSS;
> +		/* falltrought */
> +	case ETH_MQ_RX_VMDQ_RSS:
> +		if (vf_num >= ETH_64_POOLS) {
> +			/* FIXME: Is vf_num > 64 realy supported by
> hardware? */
> +			PMD_INIT_LOG(ERR, "RSS (SRIOV active), "
> +					"VFs num must be less or equal 64.");
> +				return (-EINVAL);
> +		} else if (vf_num >= ETH_32_POOLS) {
> +			if (dev->data->nb_rx_queues != 1 && dev->data-
> >nb_rx_queues != 2) {
> +				PMD_INIT_LOG(ERR, "RSS (SRIOV active, VF
> count >= 32),"
> +						"invalid rx queues count %d.
> It must be 1 or 2.",
> +						dev->data->nb_rx_queues);
> +				return (-EINVAL);
> +			}
> +
> +			sriov->nb_rx_q_per_pool = dev->data-
> >nb_rx_queues;
> +		} else {
> +			/* FIXME: is VT(16) + RSS realy supported? */

Yes, I think it supports.

> +			if (dev->data->nb_rx_queues != 4) {
> +				PMD_INIT_LOG(ERR, "RSS (SRIOV active, VFs
> count < 32), "
> +						"invalid rx queues count %d.
> It must be 4.",
> +						dev->data->nb_rx_queues);
> +				return (-EINVAL);
> +			}
> +
> +			sriov->nb_rx_q_per_pool = 4;

Better to use macro to replace the number, so does above.

> +		}
> +		break;
> +	default: /* ETH_MQ_RX_VMDQ_ONLY or ETH_MQ_RX_NONE */
> +		/* if nothing mq mode configure, use default scheme */
> +		if (dev->data->dev_conf.rxmode.mq_mode !=
> ETH_MQ_RX_VMDQ_ONLY) {
> +			PMD_INIT_LOG(INFO, "Rx mq mode changed
> from %u into VMDQ %u.",
> +					dev->data-
> >dev_conf.rxmode.mq_mode, ETH_MQ_RX_VMDQ_ONLY);
> +
> +			dev->data->dev_conf.rxmode.mq_mode =
> ETH_MQ_RX_VMDQ_ONLY;
> +		}
> +
> +		/* queue 0 of each pool is used. */
> +		sriov->nb_rx_q_per_pool = 1;
> +		break;
> +	}
> +
> +	switch (dev_conf->txmode.mq_mode) {
> +	case ETH_MQ_TX_VMDQ_DCB: /* DCB VMDQ in SRIOV mode*/
> +		if (vf_num <= ETH_16_POOLS)
> +			sriov->nb_tx_q_per_pool = 8;
> +		else if (vf_num <= ETH_32_POOLS)
> +			sriov->nb_tx_q_per_pool = 4;
> +		else if (vf_num <= ETH_64_POOLS)
> +			sriov->nb_tx_q_per_pool = 1;
> +		else {
> +			PMD_INIT_LOG(ERR, "DCB (SRIOV active), "
> +					"VF count (%d) must be less or equal
> 64.",
> +				vf_num);
> +			return (-EINVAL);
> +		}
> +		break;
> +	default: /* ETH_MQ_TX_VMDQ_ONLY or ETH_MQ_TX_NONE */
> +		/* if nothing mq mode configure, use default scheme */
> +		if (dev->data->dev_conf.txmode.mq_mode !=
> ETH_MQ_TX_VMDQ_ONLY) {
> +			PMD_INIT_LOG(INFO, "Tx mq mode is changed
> from %u into VMDQ %u.",
> +					dev->data-
> >dev_conf.txmode.mq_mode, ETH_MQ_TX_VMDQ_ONLY);
> +
> +			dev->data->dev_conf.txmode.mq_mode =
> ETH_MQ_TX_VMDQ_ONLY;
> +		}
> +
> +		/* queue 0 of each pool is used. */
> +		sriov->nb_tx_q_per_pool = 1;
> +		break;
> +	}
> +
> +	sriov->def_vmdq_idx = vf_num;
> +
> +	/*
> +	 * Pools starts at 2xN, 4xN or 8xN
> +	 */
> +	if (vf_num >= ETH_32_POOLS) {
> +		/* This must be vf_num <= ETH_64_POOLS */
> +		sriov->active = ETH_64_POOLS;
> +		sriov->def_pool_q_idx = vf_num * 2;
> +	} else if (vf_num >= ETH_16_POOLS) {
> +		sriov->active = ETH_32_POOLS;
> +		sriov->def_pool_q_idx = vf_num * 4;
> +	} else {
> +		sriov->active = ETH_16_POOLS;
> +		sriov->def_pool_q_idx = vf_num * 8;
> +	}
> +
> +	/* Check if available queus count is not less than allocated.*/

A typo: queus

> +	if (dev->data->nb_rx_queues > sriov->nb_rx_q_per_pool) {
> +		PMD_INIT_LOG(ERR, "SRIOV active, rx queue count must
> less or equal %d.",
> +						sriov->nb_rx_q_per_pool);
> +				return (-EINVAL);
> +	}
> +
> +	if (dev->data->nb_rx_queues > sriov->nb_tx_q_per_pool) {

Replace nb_rx_queues with nb_tx_queues? 

> +		PMD_INIT_LOG(ERR, "SRIOV active, tx queue count must
> less or equal %d.",
> +				sriov->nb_tx_q_per_pool);
> +		return (-EINVAL);
> +	}
> +
> +	return 0;
>  }
> 
>  int ixgbe_pf_host_configure(struct rte_eth_dev *eth_dev)
> --
> 1.9.1