On 12/21/2015 6:20 PM, Shaopeng He wrote:
> rx_descriptor_done is used by interrupt mode example application
> (l3fwd-power) to check rxd DD bit to decide the RX trend,
> then l3fwd-power will adjust the cpu frequency according to
> the result.
>
> Signed-off-by: Shaopeng He <shaopeng.he at intel.com>
> Acked-by: Jing Chen <jing.d.chen at intel.com>
> ---
> drivers/net/fm10k/fm10k.h | 3 +++
> drivers/net/fm10k/fm10k_ethdev.c | 1 +
> drivers/net/fm10k/fm10k_rxtx.c | 25 +++++++++++++++++++++++++
> 3 files changed, 29 insertions(+)
>
> diff --git a/drivers/net/fm10k/fm10k.h b/drivers/net/fm10k/fm10k.h
> index cd38af2..e2f677a 100644
> --- a/drivers/net/fm10k/fm10k.h
> +++ b/drivers/net/fm10k/fm10k.h
> @@ -345,6 +345,9 @@ uint16_t fm10k_recv_pkts(void *rx_queue, struct rte_mbuf
> **rx_pkts,
> uint16_t fm10k_recv_scattered_pkts(void *rx_queue,
> struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
>
> +int
> +fm10k_dev_rx_descriptor_done(void *rx_queue, uint16_t offset);
> +
> uint16_t fm10k_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
> uint16_t nb_pkts);
>
> diff --git a/drivers/net/fm10k/fm10k_ethdev.c
> b/drivers/net/fm10k/fm10k_ethdev.c
> index e4aed94..d39c33b 100644
> --- a/drivers/net/fm10k/fm10k_ethdev.c
> +++ b/drivers/net/fm10k/fm10k_ethdev.c
> @@ -2435,6 +2435,7 @@ static const struct eth_dev_ops fm10k_eth_dev_ops = {
> .rx_queue_release = fm10k_rx_queue_release,
> .tx_queue_setup = fm10k_tx_queue_setup,
> .tx_queue_release = fm10k_tx_queue_release,
> + .rx_descriptor_done = fm10k_dev_rx_descriptor_done,
> .reta_update = fm10k_reta_update,
> .reta_query = fm10k_reta_query,
> .rss_hash_update = fm10k_rss_hash_update,
> diff --git a/drivers/net/fm10k/fm10k_rxtx.c b/drivers/net/fm10k/fm10k_rxtx.c
> index e958865..36d3002 100644
> --- a/drivers/net/fm10k/fm10k_rxtx.c
> +++ b/drivers/net/fm10k/fm10k_rxtx.c
> @@ -369,6 +369,31 @@ fm10k_recv_scattered_pkts(void *rx_queue, struct
> rte_mbuf **rx_pkts,
> return nb_rcv;
> }
>
> +int
> +fm10k_dev_rx_descriptor_done(void *rx_queue, uint16_t offset)
> +{
> + volatile union fm10k_rx_desc *rxdp;
> + struct fm10k_rx_queue *rxq = rx_queue;
> + uint16_t desc;
> + int ret;
> +
> + if (unlikely(offset >= rxq->nb_desc)) {
> + PMD_DRV_LOG(ERR, "Invalid RX queue id %u", offset);
Sorry, here makes my confuse: offset for RX queue id?
> + return 0;
> + }
> +
> + desc = rxq->next_dd + offset;
> + if (desc >= rxq->nb_desc)
> + desc -= rxq->nb_desc;
> +
> + rxdp = &rxq->hw_ring[desc];
> +
> + ret = !!(rxdp->w.status &
> + rte_cpu_to_le_16(FM10K_RXD_STATUS_DD));
> +
> + return ret;
> +}
> +
> static inline void tx_free_descriptors(struct fm10k_tx_queue *q)
> {
> uint16_t next_rs, count = 0;
