mir/ovs
2
0
Fork 0
mirror of https://github.com/openvswitch/ovs synced 2025-08-31 06:15:47 +00:00
Code Issues Releases Wiki Activity

netdev-dpdk: Set current timestamp when flushing TX queue.

Browse Source 
The current timestamp should be set every time the queue is flushed.
Thus, if DRAIN_TSC timer cycles have passed since the last timestamp,
the send queue should be flushed again.

Signed-off-by: Ryan Wilson <wryan@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
This commit is contained in:
Ryan Wilson
2014-06-26 17:41:46 -07:00
committed by Pravin B Shelar
parent b170db2aaa
commit 844f2d749a
1 changed files with 2 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lib/netdev-dpdk.c
View File

@@ -584,6 +584,7 @@ dpdk_queue_flush__(struct netdev_dpdk *dev, int qid)
(txq->count - nb_tx));
}
txq->count = 0;
txq->tsc = rte_get_timer_cycles();
}
static inline void
@@ -629,7 +630,6 @@ dpdk_queue_pkts(struct netdev_dpdk *dev, int qid,
{
struct dpdk_tx_queue *txq = &dev->tx_q[qid];
uint64_t diff_tsc;
uint64_t cur_tsc;
int i = 0;
@@ -647,11 +647,7 @@ dpdk_queue_pkts(struct netdev_dpdk *dev, int qid,
if (txq->count == MAX_TX_QUEUE_LEN) {
dpdk_queue_flush__(dev, qid);
}
cur_tsc = rte_get_timer_cycles();
if (txq->count == 1) {
txq->tsc = cur_tsc;
}
diff_tsc = cur_tsc - txq->tsc;
diff_tsc = rte_get_timer_cycles() - txq->tsc;
if (diff_tsc >= DRAIN_TSC) {
dpdk_queue_flush__(dev, qid);
}