From 68a43d1bb023fe2d159f98246e7125478345c159 Mon Sep 17 00:00:00 2001 From: Olivier Matz Date: Wed, 29 Mar 2017 10:36:33 +0200 Subject: [PATCH] net/i40e: implement descriptor status API Signed-off-by: Olivier Matz Acked-by: Wenzhuo Lu --- doc/guides/nics/features/i40e.ini | 2 + doc/guides/nics/features/i40e_vec.ini | 2 + doc/guides/nics/features/i40e_vf.ini | 2 + doc/guides/nics/features/i40e_vf_vec.ini | 2 + drivers/net/i40e/i40e_ethdev.c | 2 + drivers/net/i40e/i40e_ethdev_vf.c | 2 + drivers/net/i40e/i40e_rxtx.c | 58 ++++++++++++++++++++++++ drivers/net/i40e/i40e_rxtx.h | 2 + 8 files changed, 72 insertions(+) diff --git a/doc/guides/nics/features/i40e.ini b/doc/guides/nics/features/i40e.ini index 6d11ccefa6..c8bfdc556b 100644 --- a/doc/guides/nics/features/i40e.ini +++ b/doc/guides/nics/features/i40e.ini @@ -38,6 +38,8 @@ Inner L3 checksum = Y Inner L4 checksum = Y Packet type parsing = Y Timesync = Y +Rx descriptor status = Y +Tx descriptor status = Y Basic stats = Y Extended stats = Y FW version = Y diff --git a/doc/guides/nics/features/i40e_vec.ini b/doc/guides/nics/features/i40e_vec.ini index edd6b71775..6fe62df0ef 100644 --- a/doc/guides/nics/features/i40e_vec.ini +++ b/doc/guides/nics/features/i40e_vec.ini @@ -29,6 +29,8 @@ Flow director = Y Flow control = Y Traffic mirroring = Y Timesync = Y +Rx descriptor status = Y +Tx descriptor status = Y Basic stats = Y Extended stats = Y Multiprocess aware = Y diff --git a/doc/guides/nics/features/i40e_vf.ini b/doc/guides/nics/features/i40e_vf.ini index 2f82c6b981..46e0d9fce3 100644 --- a/doc/guides/nics/features/i40e_vf.ini +++ b/doc/guides/nics/features/i40e_vf.ini @@ -26,6 +26,8 @@ L4 checksum offload = Y Inner L3 checksum = Y Inner L4 checksum = Y Packet type parsing = Y +Rx descriptor status = Y +Tx descriptor status = Y Basic stats = Y Extended stats = Y Multiprocess aware = Y diff --git a/doc/guides/nics/features/i40e_vf_vec.ini b/doc/guides/nics/features/i40e_vf_vec.ini index d6674f76ef..c2c6c19fee 100644 --- a/doc/guides/nics/features/i40e_vf_vec.ini +++ b/doc/guides/nics/features/i40e_vf_vec.ini @@ -18,6 +18,8 @@ RSS key update = Y RSS reta update = Y VLAN filter = Y Hash filter = Y +Rx descriptor status = Y +Tx descriptor status = Y Basic stats = Y Extended stats = Y Multiprocess aware = Y diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c index 303027b6a5..8b5fd54e71 100644 --- a/drivers/net/i40e/i40e_ethdev.c +++ b/drivers/net/i40e/i40e_ethdev.c @@ -479,6 +479,8 @@ static const struct eth_dev_ops i40e_eth_dev_ops = { .rx_queue_release = i40e_dev_rx_queue_release, .rx_queue_count = i40e_dev_rx_queue_count, .rx_descriptor_done = i40e_dev_rx_descriptor_done, + .rx_descriptor_status = i40e_dev_rx_descriptor_status, + .tx_descriptor_status = i40e_dev_tx_descriptor_status, .tx_queue_setup = i40e_dev_tx_queue_setup, .tx_queue_release = i40e_dev_tx_queue_release, .dev_led_on = i40e_dev_led_on, diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c index 55fd344255..d3659c94bc 100644 --- a/drivers/net/i40e/i40e_ethdev_vf.c +++ b/drivers/net/i40e/i40e_ethdev_vf.c @@ -217,6 +217,8 @@ static const struct eth_dev_ops i40evf_eth_dev_ops = { .rx_queue_intr_enable = i40evf_dev_rx_queue_intr_enable, .rx_queue_intr_disable = i40evf_dev_rx_queue_intr_disable, .rx_descriptor_done = i40e_dev_rx_descriptor_done, + .rx_descriptor_status = i40e_dev_rx_descriptor_status, + .tx_descriptor_status = i40e_dev_tx_descriptor_status, .tx_queue_setup = i40e_dev_tx_queue_setup, .tx_queue_release = i40e_dev_tx_queue_release, .rx_queue_count = i40e_dev_rx_queue_count, diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c index ec64a20eb0..9ccc354758 100644 --- a/drivers/net/i40e/i40e_rxtx.c +++ b/drivers/net/i40e/i40e_rxtx.c @@ -1923,6 +1923,64 @@ i40e_dev_rx_descriptor_done(void *rx_queue, uint16_t offset) return ret; } +int +i40e_dev_rx_descriptor_status(void *rx_queue, uint16_t offset) +{ + struct i40e_rx_queue *rxq = rx_queue; + volatile uint64_t *status; + uint64_t mask; + uint32_t desc; + + if (unlikely(offset >= rxq->nb_rx_desc)) + return -EINVAL; + + if (offset >= rxq->nb_rx_desc - rxq->nb_rx_hold) + return RTE_ETH_RX_DESC_UNAVAIL; + + desc = rxq->rx_tail + offset; + if (desc >= rxq->nb_rx_desc) + desc -= rxq->nb_rx_desc; + + status = &rxq->rx_ring[desc].wb.qword1.status_error_len; + mask = rte_le_to_cpu_64((1ULL << I40E_RX_DESC_STATUS_DD_SHIFT) + << I40E_RXD_QW1_STATUS_SHIFT); + if (*status & mask) + return RTE_ETH_RX_DESC_DONE; + + return RTE_ETH_RX_DESC_AVAIL; +} + +int +i40e_dev_tx_descriptor_status(void *tx_queue, uint16_t offset) +{ + struct i40e_tx_queue *txq = tx_queue; + volatile uint64_t *status; + uint64_t mask, expect; + uint32_t desc; + + if (unlikely(offset >= txq->nb_tx_desc)) + return -EINVAL; + + desc = txq->tx_tail + offset; + /* go to next desc that has the RS bit */ + desc = ((desc + txq->tx_rs_thresh - 1) / txq->tx_rs_thresh) * + txq->tx_rs_thresh; + if (desc >= txq->nb_tx_desc) { + desc -= txq->nb_tx_desc; + if (desc >= txq->nb_tx_desc) + desc -= txq->nb_tx_desc; + } + + status = &txq->tx_ring[desc].cmd_type_offset_bsz; + mask = rte_le_to_cpu_64(I40E_TXD_QW1_DTYPE_MASK); + expect = rte_cpu_to_le_64( + I40E_TX_DESC_DTYPE_DESC_DONE << I40E_TXD_QW1_DTYPE_SHIFT); + if ((*status & mask) == expect) + return RTE_ETH_TX_DESC_DONE; + + return RTE_ETH_TX_DESC_FULL; +} + int i40e_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx, diff --git a/drivers/net/i40e/i40e_rxtx.h b/drivers/net/i40e/i40e_rxtx.h index 9df8a56fac..7f63328e66 100644 --- a/drivers/net/i40e/i40e_rxtx.h +++ b/drivers/net/i40e/i40e_rxtx.h @@ -246,6 +246,8 @@ void i40e_rx_queue_release_mbufs(struct i40e_rx_queue *rxq); uint32_t i40e_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id); int i40e_dev_rx_descriptor_done(void *rx_queue, uint16_t offset); +int i40e_dev_rx_descriptor_status(void *rx_queue, uint16_t offset); +int i40e_dev_tx_descriptor_status(void *tx_queue, uint16_t offset); uint16_t i40e_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts); -- 2.20.1