pktgen: Fix accuracy of inter-packet delay.

This patch correct a bug in the delay of pktgen.
It makes sure the inter-packet interval is accurate.

Signed-off-by: Daniel Turull <daniel.turull@gmail.com>
Signed-off-by: Robert Olsson <robert.olsson@its.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 2ad68da..1dacd7b 100644 (file)
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2170,7 +2170,7 @@ static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
        end_time = ktime_now();
 
        pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
-       pkt_dev->next_tx = ktime_add_ns(end_time, pkt_dev->delay);
+       pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
 }
 
 static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)