netdev - [patch] pktgen: bug when calling ndelay in x86 architectures

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Message-ID: <4E9D5E1B.3080704@gmail.com>
Date:	Tue, 18 Oct 2011 13:08:11 +0200
From:	Daniel Turull <daniel.turull@...il.com>
To:	David Miller <davem@...emloft.net>
CC:	netdev@...r.kernel.org, Robert Olsson <robert@...julf.net>,
	Voravit Tanyingyong <voravit@....se>,
	Jens Laas <jens.laas@...m.uu.se>
Subject: [patch] pktgen: bug when calling ndelay in x86 architectures

The value selected to delay the transmission in pktgen with the ndelay function should be lower.
In Linux/arch/x86/include/asm/delay.h and Linux/arch/sh/include/asm/delay.h
the maximal expected value for a constant is 20000 ns.

Signed-off-by: Daniel Turull <daniel.turull@...il.com>
---
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 796044a..e17bd41 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2145,7 +2145,7 @@ static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
 	}
 
 	start_time = ktime_now();
-	if (remaining < 100000)
+	if (remaining < 20000)
 		ndelay(remaining);	/* really small just spin */
 	else {
 		/* see do_nanosleep */
--
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