Hi,
Try again, the attachment seems to have been dropped somewhere
last time.
Find attached a small patch to print ethernet frames encapsulated
in GRE using the Transparent Ethernet Bridge ethertype (0x6558),
as used in a recent addition to the Linux kernel, gretap.
-- bill
diff -cr tcpdump-4.0.0/ethertype.h tcpdump-4.0.0.patch/ethertype.h
*** tcpdump-4.0.0/ethertype.h 2008-09-01 03:44:13.000000000 +0100
--- tcpdump-4.0.0.patch/ethertype.h 2009-02-24 14:24:10.000000000
+0000
***************
*** 76,81 ****
--- 76,84 ----
#ifndef ETHERTYPE_SCA
#define ETHERTYPE_SCA 0x6007
#endif
+ #ifndef ETHERTYPE_TEB
+ #define ETHERTYPE_TEB 0x6558
+ #endif
#ifndef ETHERTYPE_LANBRIDGE
#define ETHERTYPE_LANBRIDGE 0x8038
#endif
diff -cr tcpdump-4.0.0/print-ether.c tcpdump-4.0.0.patch/print-ether.c
*** tcpdump-4.0.0/print-ether.c 2008-09-01 03:44:22.000000000 +0100
--- tcpdump-4.0.0.patch/print-ether.c 2009-02-24 14:24:36.000000000
+0000
***************
*** 56,61 ****
--- 56,62 ----
{ ETHERTYPE_DN, "DN" },
{ ETHERTYPE_LAT, "LAT" },
{ ETHERTYPE_SCA, "SCA" },
+ { ETHERTYPE_TEB, "TEB" },
{ ETHERTYPE_LANBRIDGE, "Lanbridge" },
{ ETHERTYPE_DECDNS, "DEC DNS" },
{ ETHERTYPE_DECDTS, "DEC DTS" },
diff -cr tcpdump-4.0.0/print-gre.c tcpdump-4.0.0.patch/print-gre.c
*** tcpdump-4.0.0/print-gre.c 2008-09-01 03:44:23.000000000 +0100
--- tcpdump-4.0.0.patch/print-gre.c 2009-02-24 14:09:18.000000000
+0000
***************
*** 225,230 ****
--- 225,233 ----
case ETHERTYPE_GRE_ISO:
isoclns_print(bp, len, len);
break;
+ case ETHERTYPE_TEB:
+ ether_print(bp, len, len);
+ break;
default:
printf("gre-proto-0x%x", prot);
}
--
William J Hulley
[email protected]
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