[dpdk-dev] [PATCH v3 6/6] net/i40e: implement descriptor status API
Olivier Matz
olivier.matz at 6wind.com
Wed Mar 29 10:36:33 CEST 2017
Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu at intel.com>
---
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 703001510..7c6c97cd0 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 5ec4088cb..372aa0154 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 2f82c6b98..60bdf7aa5 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 d6674f76e..5766aaf6f 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 20636039b..af69c9cfc 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -488,6 +488,8 @@ 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 55fd34425..d3659c94b 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 02367b7f4..9b3b39ede 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -1918,6 +1918,64 @@ i40e_dev_rx_descriptor_done(void *rx_queue, uint16_t offset)
}
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,
uint16_t nb_desc,
diff --git a/drivers/net/i40e/i40e_rxtx.h b/drivers/net/i40e/i40e_rxtx.h
index a87bdb08e..1f8e6817d 100644
--- a/drivers/net/i40e/i40e_rxtx.h
+++ b/drivers/net/i40e/i40e_rxtx.h
@@ -236,6 +236,8 @@ 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);
--
2.11.0
More information about the dev
mailing list