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;