From: Junfeng Yang <yjf@stanford.edu>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: [BUG] 2.6.* pktgen doesn't set ethnet header properly
Date: Wed, 19 Jan 2005 18:07:26 -0800 (PST) [thread overview]
Message-ID: <Pine.GSO.4.44.0501191800030.17705-100000@epic8.Stanford.EDU> (raw)
Hi,
I tried to use pktgen module from 2.6.* kernels and found out that I
couldn't receive any packets generated by pktgen. I did not even see a
"packet dropped by kernel" message. It turned out that function
setup_inject in net/core/pktgen.c doesn't setup the ethernet header field
correctly. Below is a patch that fixes the problem.
--- kernel-source-2.6.8-orig/net/core/pktgen.c 2004-08-13 22:37:26.000000000 -0700
+++ kernel-source-2.6.8/net/core/pktgen.c 2005-01-19 17:54:46.000000000 -0800
@@ -259,6 +259,9 @@
/* Set up Dest MAC */
memcpy(&(info->hh[0]), info->dst_mac, 6);
+
+ /* Set up protocol */
+ ((struct ethhdr *)(info->hh))->h_proto = htons(ETH_P_IP);
info->saddr_min = 0;
info->saddr_max = 0;
-Junfeng
next reply other threads:[~2005-01-20 2:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-20 2:07 Junfeng Yang [this message]
2005-01-21 12:22 ` [BUG] 2.6.* pktgen doesn't set ethnet header properly Robert Olsson
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