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net/ngbe: support Rx and Tx descriptor status

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Supports to get the number of used Rx descriptors,
and check the status of Rx and Tx descriptors.

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
This commit is contained in:
Jiawen Wu 2021-10-21 17:50:22 +08:00 committed by Ferruh Yigit
parent eec3e73693
commit b7aad633b3
4 changed files with 82 additions and 0 deletions
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2
doc/guides/nics/features/ngbe.ini
View File

@ -31,6 +31,8 @@ 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
Stats per queue = Y

3
drivers/net/ngbe/ngbe_ethdev.c
View File

@ -320,6 +320,9 @@ eth_ngbe_dev_init(struct rte_eth_dev *eth_dev, void *init_params __rte_unused)
PMD_INIT_FUNC_TRACE();
eth_dev->dev_ops = &ngbe_eth_dev_ops;
eth_dev->rx_queue_count = ngbe_dev_rx_queue_count;
eth_dev->rx_descriptor_status = ngbe_dev_rx_descriptor_status;
eth_dev->tx_descriptor_status = ngbe_dev_tx_descriptor_status;
eth_dev->rx_pkt_burst = &ngbe_recv_pkts;
eth_dev->tx_pkt_burst = &ngbe_xmit_pkts;
eth_dev->tx_pkt_prepare = &ngbe_prep_pkts;

5
drivers/net/ngbe/ngbe_ethdev.h
View File

@ -202,6 +202,11 @@ int ngbe_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
uint16_t nb_tx_desc, unsigned int socket_id,
const struct rte_eth_txconf *tx_conf);
uint32_t ngbe_dev_rx_queue_count(void *rx_queue);
int ngbe_dev_rx_descriptor_status(void *rx_queue, uint16_t offset);
int ngbe_dev_tx_descriptor_status(void *tx_queue, uint16_t offset);
int ngbe_dev_rx_init(struct rte_eth_dev *dev);
void ngbe_dev_tx_init(struct rte_eth_dev *dev);

72
drivers/net/ngbe/ngbe_rxtx.c
View File

@ -2285,6 +2285,78 @@ ngbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
return 0;
}
uint32_t
ngbe_dev_rx_queue_count(void *rx_queue)
{
#define NGBE_RXQ_SCAN_INTERVAL 4
volatile struct ngbe_rx_desc *rxdp;
struct ngbe_rx_queue *rxq = rx_queue;
uint32_t desc = 0;
rxdp = &rxq->rx_ring[rxq->rx_tail];
while ((desc < rxq->nb_rx_desc) &&
(rxdp->qw1.lo.status &
rte_cpu_to_le_32(NGBE_RXD_STAT_DD))) {
desc += NGBE_RXQ_SCAN_INTERVAL;
rxdp += NGBE_RXQ_SCAN_INTERVAL;
if (rxq->rx_tail + desc >= rxq->nb_rx_desc)
rxdp = &(rxq->rx_ring[rxq->rx_tail +
desc - rxq->nb_rx_desc]);
}
return desc;
}
int
ngbe_dev_rx_descriptor_status(void *rx_queue, uint16_t offset)
{
struct ngbe_rx_queue *rxq = rx_queue;
volatile uint32_t *status;
uint32_t nb_hold, desc;
if (unlikely(offset >= rxq->nb_rx_desc))
return -EINVAL;
nb_hold = rxq->nb_rx_hold;
if (offset >= rxq->nb_rx_desc - nb_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].qw1.lo.status;
if (*status & rte_cpu_to_le_32(NGBE_RXD_STAT_DD))
return RTE_ETH_RX_DESC_DONE;
return RTE_ETH_RX_DESC_AVAIL;
}
int
ngbe_dev_tx_descriptor_status(void *tx_queue, uint16_t offset)
{
struct ngbe_tx_queue *txq = tx_queue;
volatile uint32_t *status;
uint32_t desc;
if (unlikely(offset >= txq->nb_tx_desc))
return -EINVAL;
desc = txq->tx_tail + offset;
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].dw3;
if (*status & rte_cpu_to_le_32(NGBE_TXD_DD))
return RTE_ETH_TX_DESC_DONE;
return RTE_ETH_TX_DESC_FULL;
}
void
ngbe_dev_clear_queues(struct rte_eth_dev *dev)
{