[v6,3/9] net/vmxnet3: add Rx queue usage count utility
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Commit Message
From: Pankaj Gupta <pagupta@vmware.com>
Count the number of entries in the Rx queue for debugging.
Tested, using testpmd, for different hardware versions on ESXi 7.0
Update 2.
Signed-off-by: Pankaj Gupta <pagupta@vmware.com>
Reviewed-by: Jochen Behrens <jbehrens@vmware.com>
---
drivers/net/vmxnet3/vmxnet3_ethdev.c | 1 +
drivers/net/vmxnet3/vmxnet3_ethdev.h | 3 +++
drivers/net/vmxnet3/vmxnet3_rxtx.c | 30 ++++++++++++++++++++++++++++
3 files changed, 34 insertions(+)
@@ -294,6 +294,7 @@ eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev)
eth_dev->rx_pkt_burst = &vmxnet3_recv_pkts;
eth_dev->tx_pkt_burst = &vmxnet3_xmit_pkts;
eth_dev->tx_pkt_prepare = vmxnet3_prep_pkts;
+ eth_dev->rx_queue_count = vmxnet3_dev_rx_queue_count;
pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
/* extra mbuf field is required to guess MSS */
@@ -193,6 +193,9 @@ int vmxnet3_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
uint16_t nb_rx_desc, unsigned int socket_id,
const struct rte_eth_rxconf *rx_conf,
struct rte_mempool *mb_pool);
+
+uint32_t vmxnet3_dev_rx_queue_count(void *rx_queue);
+
int vmxnet3_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);
@@ -1019,6 +1019,36 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
return nb_rx;
}
+uint32_t
+vmxnet3_dev_rx_queue_count(void *rx_queue)
+{
+ const vmxnet3_rx_queue_t *rxq;
+ const Vmxnet3_RxCompDesc *rcd;
+ uint32_t idx, nb_rxd = 0;
+ uint8_t gen;
+
+ rxq = rx_queue;
+ if (unlikely(rxq->stopped)) {
+ PMD_RX_LOG(DEBUG, "Rx queue is stopped.");
+ return 0;
+ }
+
+ gen = rxq->comp_ring.gen;
+ idx = rxq->comp_ring.next2proc;
+ rcd = &rxq->comp_ring.base[idx].rcd;
+ while (rcd->gen == gen) {
+ if (rcd->eop)
+ ++nb_rxd;
+ if (++idx == rxq->comp_ring.size) {
+ idx = 0;
+ gen ^= 1;
+ }
+ rcd = &rxq->comp_ring.base[idx].rcd;
+ }
+
+ return nb_rxd;
+}
+
int
vmxnet3_dev_tx_queue_setup(struct rte_eth_dev *dev,
uint16_t queue_idx,