[dpdk-dev] [PATCH v5 30/31] net/ice: support advance RX/TX

[Ferruh Yigit]

On 12/17/2018 7:37 AM, Wenzhuo Lu wrote:
> Add RX functions, scatter and bulk.
> Add TX function, simple.
> 
> Signed-off-by: Wenzhuo Lu <wenzhuo.lu at intel.com>
> Signed-off-by: Qiming Yang <qiming.yang at intel.com>
> Signed-off-by: Xiaoyun Li <xiaoyun.li at intel.com>
> Signed-off-by: Jingjing Wu <jingjing.wu at intel.com>

<...>

> +ice_tx_free_bufs(struct ice_tx_queue *txq)
> +{
> +	struct ice_tx_entry *txep;
> +	uint16_t i;
> +
> +	if ((txq->tx_ring[txq->tx_next_dd].cmd_type_offset_bsz &
> +	     rte_cpu_to_le_64(ICE_TXD_QW1_DTYPE_M)) !=
> +	    rte_cpu_to_le_64(ICE_TX_DESC_DTYPE_DESC_DONE))
> +		return 0;
> +
> +	txep = &txq->sw_ring[txq->tx_next_dd - (txq->tx_rs_thresh - 1)];
> +
> +	for (i = 0; i < txq->tx_rs_thresh; i++)
> +		rte_prefetch0((txep + i)->mbuf);
> +
> +	if (txq->offloads & DEV_TX_OFFLOAD_MBUF_FAST_FREE) {

You can announce "Fast mbuf free" feature in .ini file if this is supported.