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pktgen: avoid calling gettimeofday

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If not using delay then no need to update next_tx after
each packet sent. This allows pktgen to send faster especially
on systems with slower clock sources.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2009-08-27 13:55:15 +00:00 committed by David S. Miller
parent 5b8db2f568
commit 5c9d191c16
1 changed files with 9 additions and 7 deletions
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16
net/core/pktgen.c
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@ -3450,15 +3450,17 @@ static void pktgen_xmit(struct pktgen_dev *pkt_dev)
pkt_dev->last_ok = 0;
}
pkt_dev->next_tx_us = getCurUs();
pkt_dev->next_tx_ns = 0;
if (pkt_dev->delay_us || pkt_dev->delay_ns) {
pkt_dev->next_tx_us = getCurUs();
pkt_dev->next_tx_ns = 0;
pkt_dev->next_tx_us += pkt_dev->delay_us;
pkt_dev->next_tx_ns += pkt_dev->delay_ns;
pkt_dev->next_tx_us += pkt_dev->delay_us;
pkt_dev->next_tx_ns += pkt_dev->delay_ns;
if (pkt_dev->next_tx_ns > 1000) {
pkt_dev->next_tx_us++;
pkt_dev->next_tx_ns -= 1000;
if (pkt_dev->next_tx_ns > 1000) {
pkt_dev->next_tx_us++;
pkt_dev->next_tx_ns -= 1000;
}
}
}
__netif_tx_unlock_bh(txq);