netdev - Re: [PATCH 1/2] pktgen: increasing transmission granularity

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Date:	Thu, 10 Jun 2010 10:44:51 +0200
From:	Daniel Turull <daniel.turull@...il.com>
To:	David Miller <davem@...emloft.net>
CC:	netdev@...r.kernel.org, robert@...julf.net, jens.laas@....uu.se
Subject: Re: [PATCH 1/2] pktgen: increasing transmission granularity

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@...il.com>

---
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 2ad68da..1dacd7b 100644
--- 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)
--
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