Fm10k nic need to support check descriptor status APIs, they are rte_eth_rx_descriptor_status and rte_eth_tx_descriptor_status. So, this patch add ops with function pointer that enable feature.
Signed-off-by: Wei Zhao <wei.zh...@intel.com> --- v2: -fix DD check error in tx descriptor v3: -fix DD check index error --- doc/guides/rel_notes/release_18_08.rst | 6 +++ drivers/net/fm10k/fm10k.h | 7 +++ drivers/net/fm10k/fm10k_ethdev.c | 2 + drivers/net/fm10k/fm10k_rxtx.c | 78 ++++++++++++++++++++++++++++++++++ 4 files changed, 93 insertions(+) diff --git a/doc/guides/rel_notes/release_18_08.rst b/doc/guides/rel_notes/release_18_08.rst index 5bc23c5..5baa09e 100644 --- a/doc/guides/rel_notes/release_18_08.rst +++ b/doc/guides/rel_notes/release_18_08.rst @@ -41,6 +41,12 @@ New Features Also, make sure to start the actual text at the margin. ========================================================= +* **Added fm10k ethernet driver to support check descriptor status APIs.** + + Fm10k nic need to support check descriptor status APIs, they are + rte_eth_rx_descriptor_status and rte_eth_tx_descriptor_status. + add ops pointer with new function which enable feature. + API Changes ----------- diff --git a/drivers/net/fm10k/fm10k.h b/drivers/net/fm10k/fm10k.h index ef30780..1bc2c18 100644 --- a/drivers/net/fm10k/fm10k.h +++ b/drivers/net/fm10k/fm10k.h @@ -329,6 +329,13 @@ uint16_t fm10k_recv_scattered_pkts(void *rx_queue, int fm10k_dev_rx_descriptor_done(void *rx_queue, uint16_t offset); +int +fm10k_dev_rx_descriptor_status(void *rx_queue, uint16_t offset); + +int +fm10k_dev_tx_descriptor_status(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 3ff1b0e..ea2f2bf 100644 --- a/drivers/net/fm10k/fm10k_ethdev.c +++ b/drivers/net/fm10k/fm10k_ethdev.c @@ -2837,6 +2837,8 @@ static const struct eth_dev_ops fm10k_eth_dev_ops = { .tx_queue_setup = fm10k_tx_queue_setup, .tx_queue_release = fm10k_tx_queue_release, .rx_descriptor_done = fm10k_dev_rx_descriptor_done, + .rx_descriptor_status = fm10k_dev_rx_descriptor_status, + .tx_descriptor_status = fm10k_dev_tx_descriptor_status, .rx_queue_intr_enable = fm10k_dev_rx_queue_intr_enable, .rx_queue_intr_disable = fm10k_dev_rx_queue_intr_disable, .reta_update = fm10k_reta_update, diff --git a/drivers/net/fm10k/fm10k_rxtx.c b/drivers/net/fm10k/fm10k_rxtx.c index 9320748..cb06e43 100644 --- a/drivers/net/fm10k/fm10k_rxtx.c +++ b/drivers/net/fm10k/fm10k_rxtx.c @@ -389,6 +389,84 @@ fm10k_dev_rx_descriptor_done(void *rx_queue, uint16_t offset) return ret; } +int +fm10k_dev_rx_descriptor_status(void *rx_queue, uint16_t offset) +{ + volatile union fm10k_rx_desc *rxdp; + struct fm10k_rx_queue *rxq = rx_queue; + uint16_t nb_hold, trigger_last; + uint16_t desc; + int ret; + + if (unlikely(offset >= rxq->nb_desc)) { + PMD_DRV_LOG(ERR, "Invalid RX descriptor offset %u", offset); + return 0; + } + + if (rxq->next_trigger < rxq->alloc_thresh) + trigger_last = rxq->next_trigger + + rxq->nb_desc - rxq->alloc_thresh; + else + trigger_last = rxq->next_trigger - rxq->alloc_thresh; + + if (rxq->next_dd < trigger_last) + nb_hold = rxq->next_dd + rxq->nb_desc - trigger_last; + else + nb_hold = rxq->next_dd - trigger_last; + + if (offset >= rxq->nb_desc - nb_hold) + return RTE_ETH_RX_DESC_UNAVAIL; + + 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; +} + +int +fm10k_dev_tx_descriptor_status(void *tx_queue, uint16_t offset) +{ + volatile struct fm10k_tx_desc *txdp; + struct fm10k_tx_queue *txq = tx_queue; + uint16_t desc; + uint16_t count, next_rs = txq->nb_desc; + struct fifo rs_tracker = txq->rs_tracker; + struct fifo *r = &rs_tracker; + + if (unlikely(offset >= txq->nb_desc)) + return -EINVAL; + + desc = txq->next_free + offset; + /* go to next desc that has the RS bit */ + desc = (desc / txq->rs_thresh + 1) * + txq->rs_thresh - 1; + + if (desc >= txq->nb_desc) { + desc -= txq->nb_desc; + if (desc >= txq->nb_desc) + desc -= txq->nb_desc; + } + + r->head = r->list; + for (count = 0; count < txq->nb_desc; count++) { + if (*r->head >= desc && *r->head < next_rs) + next_rs = *r->tail; + ++r->head; + } + + txdp = &txq->hw_ring[next_rs]; + if (txdp->flags & FM10K_TXD_FLAG_DONE) + return RTE_ETH_TX_DESC_DONE; + + return RTE_ETH_TX_DESC_FULL; +} + /* * Free multiple TX mbuf at a time if they are in the same pool * -- 2.7.5