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vmxnet3: rework Tx

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Clean up txNumDeferred usage.

Signed-off-by: Yong Wang <yongwang@vmware.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Yong Wang 2016-01-12 18:08:34 -08:00 committed by Thomas Monjalon
parent 6e9893c5ef
commit 55cd9f139e
1 changed files with 6 additions and 5 deletions
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11
drivers/net/vmxnet3/vmxnet3_rxtx.c
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@ -326,6 +326,8 @@ vmxnet3_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_tx;
vmxnet3_tx_queue_t *txq = tx_queue;
struct vmxnet3_hw *hw = txq->hw;
Vmxnet3_TxQueueCtrl *txq_ctrl = &txq->shared->ctrl;
uint32_t deferred = rte_le_to_cpu_32(txq_ctrl->txNumDeferred);
if (unlikely(txq->stopped)) {
PMD_TX_LOG(DEBUG, "Tx queue is stopped.");
@ -413,15 +415,14 @@ vmxnet3_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
rte_compiler_barrier();
gdesc->dword[2] ^= VMXNET3_TXD_GEN;
txq->shared->ctrl.txNumDeferred++;
txq_ctrl->txNumDeferred = rte_cpu_to_le_32(++deferred);
nb_tx++;
}
PMD_TX_LOG(DEBUG, "vmxnet3 txThreshold: %u", txq->shared->ctrl.txThreshold);
PMD_TX_LOG(DEBUG, "vmxnet3 txThreshold: %u", rte_le_to_cpu_32(txq_ctrl->txThreshold));
if (txq->shared->ctrl.txNumDeferred >= txq->shared->ctrl.txThreshold) {
txq->shared->ctrl.txNumDeferred = 0;
if (deferred >= rte_le_to_cpu_32(txq_ctrl->txThreshold)) {
txq_ctrl->txNumDeferred = 0;
/* Notify vSwitch that packets are available. */
VMXNET3_WRITE_BAR0_REG(hw, (VMXNET3_REG_TXPROD + txq->queue_id * VMXNET3_REG_ALIGN),
txq->cmd_ring.next2fill);