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
-
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