Re: [PATCH] ethdev: convert Tx offloads to Tx queue config

["Ananyev, Konstantin" <konstantin.ananyev@intel.com>]

> -----Original Message-----
> From: Zhang, Qi Z
> Sent: Thursday, May 3, 2018 7:03 AM
> To: Yigit, Ferruh <ferruh.yigit@intel.com>; Ananyev, Konstantin <konstantin.ananyev@intel.com>
> Cc: dev@dpdk.org; Zhang, Qi Z <qi.z.zhang@intel.com>
> Subject: [PATCH] ethdev: convert Tx offloads to Tx queue config
> 
> Tx offload will be converted to txq_flags automatically during
> rte_eth_dev_info_get and rte_eth_tx_queue_info_get. So PMD can
> clean the code to get rid of txq_flags at all while keep old APP
> not be impacted.
> 
> Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
> ---
>  lib/librte_ethdev/rte_ethdev.c | 32 ++++++++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
> 
> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
> index e5605242d..a357ee09f 100644
> --- a/lib/librte_ethdev/rte_ethdev.c
> +++ b/lib/librte_ethdev/rte_ethdev.c
> @@ -1516,6 +1516,30 @@ rte_eth_rx_queue_setup(uint16_t port_id, uint16_t rx_queue_id,
>  }
> 
>  /**
> + * Convert from tx offloads to txq_flags.
> + */
> +static void
> +rte_eth_convert_tx_offload(const uint64_t tx_offloads, uint32_t *txq_flags)
> +{
> +	uint32_t flags = 0;
> +
> +	if (!(tx_offloads & DEV_TX_OFFLOAD_MULTI_SEGS))
> +		flags |= ETH_TXQ_FLAGS_NOMULTSEGS;
> +	if (!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT))
> +		flags |= ETH_TXQ_FLAGS_NOVLANOFFL;
> +	if (!(tx_offloads & DEV_TX_OFFLOAD_SCTP_CKSUM))
> +		flags |= ETH_TXQ_FLAGS_NOXSUMSCTP;
> +	if (!(tx_offloads & DEV_TX_OFFLOAD_UDP_CKSUM))
> +		flags |= ETH_TXQ_FLAGS_NOXSUMUDP;
> +	if (!(tx_offloads & DEV_TX_OFFLOAD_TCP_CKSUM))
> +		flags |= ETH_TXQ_FLAGS_NOXSUMTCP;
> +	if (tx_offloads & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
> +		flags |= ETH_TXQ_FLAGS_NOREFCOUNT | ETH_TXQ_FLAGS_NOMULTMEMP;
> +
> +	*txq_flags = flags;
> +}
> +
> +/**
>   * A conversion function from txq_flags API.
>   */
>  static void
> @@ -2359,6 +2383,7 @@ void
>  rte_eth_dev_info_get(uint16_t port_id, struct rte_eth_dev_info *dev_info)
>  {
>  	struct rte_eth_dev *dev;
> +	struct rte_eth_txconf *txconf;
>  	const struct rte_eth_desc_lim lim = {
>  		.nb_max = UINT16_MAX,
>  		.nb_min = 0,
> @@ -2380,6 +2405,9 @@ rte_eth_dev_info_get(uint16_t port_id, struct rte_eth_dev_info *dev_info)
>  	dev_info->nb_tx_queues = dev->data->nb_tx_queues;
> 
>  	dev_info->dev_flags = &dev->data->dev_flags;
> +	txconf = &dev_info->default_txconf;
> +	/* convert offload to txq_flags to support legacy app */
> +	rte_eth_convert_tx_offload(txconf->offloads, &txconf->txq_flags);
>  }
> 
>  int
> @@ -3799,6 +3827,7 @@ rte_eth_tx_queue_info_get(uint16_t port_id, uint16_t queue_id,
>  	struct rte_eth_txq_info *qinfo)
>  {
>  	struct rte_eth_dev *dev;
> +	struct rte_eth_txconf *txconf = &qinfo->conf;
> 
>  	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
> 
> @@ -3815,6 +3844,9 @@ rte_eth_tx_queue_info_get(uint16_t port_id, uint16_t queue_id,
> 
>  	memset(qinfo, 0, sizeof(*qinfo));
>  	dev->dev_ops->txq_info_get(dev, queue_id, qinfo);
> +	/* convert offload to txq_flags to support legacy app */
> +	rte_eth_convert_tx_offload(txconf->offloads, &txconf->txq_flags);
> +
>  	return 0;
>  }
> 
> --

Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

> 2.13.6