From Owen Kirby:

The attached patch adds a dissector for IPv6 over IEEE 802.15.4 (aka 6LoWPAN).
The protocol is specified in RFC 4944. This dissector also processes the
6LoWPAN draft header compression scheme in draft-ietf-6lowpan-hc-05.

svn path=/trunk/; revision=30268

1 files changed, 161 insertions, 0 deletions

diff --git a/epan/dissectors/packet-6lowpan.h b/epan/dissectors/packet-6lowpan.h
new file mode 100644
index 0000000000..497b89efeb
--- /dev/null
+++ b/epan/dissectors/packet-6lowpan.h
@@ -0,0 +1,161 @@
+/* packet-6lowpan.h
+ * Definitions for 6lowpan packet disassembly structures and routines
+ * By Owen Kirby <osk@exegin.com>
+ * Copyright 2009 Owen Kirby
+ *
+ * $Id$
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+/* 6LoWPAN Patterns */
+#define LOWPAN_PATTERN_NALP             0x00
+#define LOWPAN_PATTERN_NALP_BITS        2
+#define LOWPAN_PATTERN_IPV6             0x41
+#define LOWPAN_PATTERN_IPV6_BITS        8
+#define LOWPAN_PATTERN_HC1              0x42    /* Deprecated - replaced with IPHC. */
+#define LOWPAN_PATTERN_HC1_BITS         8
+#define LOWPAN_PATTERN_BC0              0x50
+#define LOWPAN_PATTERN_BC0_BITS         8
+#define LOWPAN_PATTERN_IPHC             0x03    /* See draft-ietf-6lowpan-hc-05.txt */
+#define LOWPAN_PATTERN_IPHC_BITS        3
+#define LOWPAN_PATTERN_ESC              0x7f
+#define LOWPAN_PATTERN_ESC_BITS         8
+#define LOWPAN_PATTERN_MESH             0x02
+#define LOWPAN_PATTERN_MESH_BITS        2
+#define LOWPAN_PATTERN_FRAG1            0x18
+#define LOWPAN_PATTERN_FRAGN            0x1c
+#define LOWPAN_PATTERN_FRAG_BITS        5
+
+/* 6LoWPAN HC1 Header */
+#define LOWPAN_HC1_SOURCE_PREFIX        0x80
+#define LOWPAN_HC1_SOURCE_IFC           0x40
+#define LOWPAN_HC1_DEST_PREFIX          0x20
+#define LOWPAN_HC1_DEST_IFC             0x10
+#define LOWPAN_HC1_TRAFFIC_CLASS        0x08
+#define LOWPAN_HC1_NEXT                 0x06
+#define LOWPAN_HC1_MORE                 0x01
+
+/* IPv6 header field lengths (in bits) */
+#define LOWPAN_IPV6_TRAFFIC_CLASS_BITS  8
+#define LOWPAN_IPV6_FLOW_LABEL_BITS     20
+#define LOWPAN_IPV6_NEXT_HEADER_BITS    8
+#define LOWPAN_IPV6_HOP_LIMIT_BITS      8
+#define LOWPAN_IPV6_PREFIX_BITS         64
+#define LOWPAN_IPV6_INTERFACE_BITS      64
+
+/* HC_UDP header field lengths (in bits). */
+#define LOWPAN_UDP_PORT_BITS            16
+#define LOWPAN_UDP_PORT_COMPRESSED_BITS 4
+#define LOWPAN_UDP_LENGTH_BITS          16
+#define LOWPAN_UDP_CHECKSUM_BITS        16
+
+/* HC1 Next Header compression modes. */
+#define LOWPAN_HC1_NEXT_NONE            0x00
+#define LOWPAN_HC1_NEXT_UDP             0x01
+#define LOWPAN_HC1_NEXT_ICMP            0x02
+#define LOWPAN_HC1_NEXT_TCP             0x03
+
+/* HC_UDP Header */
+#define LOWPAN_HC2_UDP_SRCPORT          0x80
+#define LOWPAN_HC2_UDP_DSTPORT          0x40
+#define LOWPAN_HC2_UDP_LENGTH           0x20
+#define LOWPAN_HC2_UDP_RESERVED         0x1f
+
+/* IPHC Base flags */
+#define LOWPAN_IPHC_FLAG_FLOW           0x1800
+#define LOWPAN_IPHC_FLAG_NHDR           0x0400
+#define LOWPAN_IPHC_FLAG_HLIM           0x0300
+#define LOWPAN_IPHC_FLAG_CONTEXT_ID     0x0080
+#define LOWPAN_IPHC_FLAG_SRC_COMP       0x0040
+#define LOWPAN_IPHC_FLAG_SRC_MODE       0x0030
+#define LOWPAN_IPHC_FLAG_MCAST_COMP     0x0008
+#define LOWPAN_IPHC_FLAG_DST_COMP       0x0004
+#define LOWPAN_IPHC_FLAG_DST_MODE       0x0003
+#define LOWPAN_IPHC_FLAG_SCI            0xf0
+#define LOWPAN_IPHC_FLAG_DCI            0x0f
+/* Offsets for extracting integer fields. */
+#define LOWPAN_IPHC_FLAG_OFFSET_FLOW    11
+#define LOWPAN_IPHC_FLAG_OFFSET_HLIM    8
+#define LOWPAN_IPHC_FLAG_OFFSET_SRC_MODE 4
+#define LOWPAN_IPHC_FLAG_OFFSET_DST_MODE 0
+
+/* IPHC Flow encoding values. */
+#define LOWPAN_IPHC_FLOW_CLASS_LABEL    0x0
+#define LOWPAN_IPHC_FLOW_ECN_LABEL      0x1
+#define LOWPAN_IPHC_FLOW_CLASS          0x2
+#define LOWPAN_IPHC_FLOW_COMPRESSED     0x3
+
+/* IPHC Hop limit encoding. */
+#define LOWPAN_IPHC_HLIM_INLINE         0x0
+#define LOWPAN_IPHC_HLIM_1              0x1
+#define LOWPAN_IPHC_HLIM_64             0x2
+#define LOWPAN_IPHC_HLIM_255            0x3
+
+/* IPHC address modes. */
+#define LOWPAN_IPHC_ADDR_FULL_INLINE    0x0
+#define LOWPAN_IPHC_ADDR_64BIT_INLINE   0x1
+#define LOWPAN_IPHC_ADDR_16BIT_INLINE   0x2
+#define LOWPAN_IPHC_ADDR_COMPRESSED     0x3
+
+/* IPHC Traffic class and flow label field sizes (in bits) */
+#define LOWPAN_IPHC_ECN_BITS            2
+#define LOWPAN_IPHC_DSCP_BITS           6
+#define LOWPAN_IPHC_LABEL_BITS          20
+/* Bitmasks for the reconstructed traffic class field. */
+#define LOWPAN_IPHC_TRAFFIC_ECN         0x03
+#define LOWPAN_IPHC_TRAFFIC_DSCP        0xfc
+
+/* NHC Patterns. */
+#define LOWPAN_NHC_PATTERN_EXT          0x0e
+#define LOWPAN_NHC_PATTERN_EXT_BITS     4
+#define LOWPAN_NHC_PATTERN_UDP          0x1e
+#define LOWPAN_NHC_PATTERN_UDP_BITS     5
+
+/* NHC Extension header fields. */
+#define LOWPAN_NHC_EXT_EID              0x0e
+#define LOWPAN_NHC_EXT_EID_OFFSET       1
+#define LOWPAN_NHC_EXT_NHDR             0x01
+
+#define LOWPAN_NHC_EID_HOP_BY_HOP       0x00
+#define LOWPAN_NHC_EID_ROUTING          0x01
+#define LOWPAN_NHC_EID_FRAGMENT         0x02
+#define LOWPAN_NHC_EID_DEST_OPTIONS     0x03
+#define LOWPAN_NHC_EID_MOBILITY         0x04
+#define LOWPAN_NHC_EID_IPV6             0x07
+
+/* NHC UDP fields. */
+#define LOWPAN_NHC_UDP_CHECKSUM         0x04
+#define LOWPAN_NHC_UDP_SRCPORT          0x02
+#define LOWPAN_NHC_UDP_DSTPORT          0x01
+
+/* 6LoWPAN Mesh Header */
+#define LOWPAN_MESH_HEADER_V            0x20
+#define LOWPAN_MESH_HEADER_F            0x10
+#define LOWPAN_MESH_HEADER_HOPS         0x0f
+
+/* 6LoWPAN First Fragment Header */
+#define LOWPAN_FRAG_DGRAM_SIZE_BITS     11
+
+/* Compressed port number offset. */
+#define LOWPAN_PORT_8BIT_OFFSET         0xf000
+#define LOWPAN_PORT_12BIT_OFFSET        (LOWPAN_PORT_8BIT_OFFSET | 0xb0)
+
+/* 6LoWPAN interface identifier length. */
+#define LOWPAN_IFC_ID_LEN               8