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|
/* packet-lisp.c
* Routines for LISP Control Message dissection
* Copyright 2011, Lorand Jakab <lj@lispmon.net>
*
* $Id$
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <epan/packet.h>
#include <epan/afn.h>
#include <epan/ipv6-utils.h>
#define INET_ADDRLEN 4
#define INET6_ADDRLEN 16
/* See draft-ietf-lisp-11 "Locator/ID Separation Protocol (LISP)" */
#define LISP_CONTROL_PORT 4342
/* LISP Control Message types */
#define LISP_MAP_REQUEST 1
#define LISP_MAP_REPLY 2
#define LISP_MAP_REGISTER 3
#define LISP_MAP_NOTIFY 4
#define LISP_ECM 8
#define LISP_ECM_HEADER_LEN 4
#define LISP_MAP_ACT 0xE0
#define LISP_MAP_AUTH 0x10
#define LOCAL_BIT_MASK 0x0004
#define PROBE_BIT_MASK 0x0002
#define REACH_BIT_MASK 0x0001
#define MAP_REQ_FLAG_A 0x080000
#define MAP_REQ_FLAG_M 0x040000
#define MAP_REQ_FLAG_P 0x020000
#define MAP_REQ_FLAG_S 0x010000
#define MAP_REQ_FLAG_p 0x008000
#define MAP_REQ_FLAG_s 0x004000
#define MAP_REQ_RESERVED 0x003FE0
#define MAP_REP_FLAG_P 0x080000
#define MAP_REP_FLAG_E 0x040000
#define MAP_REP_RESERVED 0x03FFFF
#define MAP_REG_FLAG_P 0x080000
#define MAP_REG_RESERVED 0x07FFFE
#define MAP_REG_FLAG_M 0x000001
#define MAP_NOT_RESERVED 0x0FFFFF
/* Initialize the protocol and registered fields */
static int proto_lisp = -1;
static int hf_lisp_type = -1;
static int hf_lisp_irc = -1;
static int hf_lisp_records = -1;
static int hf_lisp_nonce = -1;
/* Map-Request fields */
static int hf_lisp_mreq_flags_auth = -1;
static int hf_lisp_mreq_flags_mrp = -1;
static int hf_lisp_mreq_flags_probe = -1;
static int hf_lisp_mreq_flags_smr = -1;
static int hf_lisp_mreq_flags_pitr = -1;
static int hf_lisp_mreq_flags_smri = -1;
static int hf_lisp_mreq_res = -1;
static int hf_lisp_mreq_srceid_afi = -1;
static int hf_lisp_mreq_srceid = -1;
static int hf_lisp_mreq_srceidv6 = -1;
static int hf_lisp_mreq_srcitr = -1;
static int hf_lisp_mreq_srcitrv6 = -1;
/* Map-Reply fields */
static int hf_lisp_mrep_flags = -1;
static int hf_lisp_mrep_flags_probe = -1;
static int hf_lisp_mrep_flags_enlr = -1;
static int hf_lisp_mrep_res = -1;
/* Map-Register fields */
static int hf_lisp_mreg_flags = -1;
static int hf_lisp_mreg_flags_pmr = -1;
static int hf_lisp_mreg_flags_wmn = -1;
static int hf_lisp_mreg_res = -1;
static int hf_lisp_mreg_keyid = -1;
static int hf_lisp_mreg_authlen = -1;
static int hf_lisp_mreg_auth = -1;
/* Map-Notify fields */
static int hf_lisp_mnot_res = -1;
static int hf_lisp_mnot_keyid = -1;
static int hf_lisp_mnot_authlen = -1;
static int hf_lisp_mnot_auth = -1;
/* Mapping record fields */
static int hf_lisp_mapping_res = -1;
static int hf_lisp_mapping_ver = -1;
/* Encapsulated Control Message fields */
static int hf_lisp_ecm_res = -1;
/* Initialize the subtree pointers */
static gint ett_lisp = -1;
static gint ett_lisp_mr = -1;
static gint ett_lisp_mapping = -1;
static gint ett_lisp_itr = -1;
static gint ett_lisp_record = -1;
static dissector_handle_t ipv4_handle;
static dissector_handle_t ipv6_handle;
static dissector_handle_t data_handle;
static gboolean encapsulated = FALSE;
const value_string lisp_typevals[] = {
{ LISP_MAP_REQUEST, "Map-Request" },
{ LISP_MAP_REPLY, "Map-Reply" },
{ LISP_MAP_REGISTER, "Map-Register" },
{ LISP_MAP_NOTIFY, "Map-Notify" },
{ LISP_ECM, "Encapsulated Control Message" },
{ 0, NULL}
};
/*
* Dissector code for locator records within control packets
*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Priority | Weight | M Priority | M Weight |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Unused Flags |L|p|R| Loc-AFI |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Locator |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
*/
static int
dissect_lisp_locator(tvbuff_t *tvb, packet_info *pinfo, proto_tree *lisp_mapping_tree)
{
gint offset = 0;
guint8 prio, weight, m_prio, m_weight;
guint16 flags, loc_afi;
guint32 locator_v4;
struct e_in6_addr locator_v6;
tvbuff_t *next_tvb;
prio = tvb_get_guint8(tvb, offset); offset += 1;
weight = tvb_get_guint8(tvb, offset); offset += 1;
m_prio = tvb_get_guint8(tvb, offset); offset += 1;
m_weight = tvb_get_guint8(tvb, offset); offset += 1;
flags = tvb_get_ntohs(tvb, offset); offset += 2;
loc_afi = tvb_get_ntohs(tvb, offset); offset += 2;
switch (loc_afi) {
case AFNUM_INET:
locator_v4 = tvb_get_ipv4(tvb, offset);
proto_tree_add_text(lisp_mapping_tree, tvb, 0, 8 + INET_ADDRLEN,
"%sRLOC: %s%s, %s, Priority/Weight: %d/%d, Multicast Priority/Weight: %d/%d",
(flags&LOCAL_BIT_MASK) ? "Local " : "",
ip_to_str((guint8 *)&locator_v4),
(flags&PROBE_BIT_MASK) ? " (probed)" : "",
(flags&REACH_BIT_MASK) ? "Reachable" : "Unreachable",
prio, weight, m_prio, m_weight);
offset += INET_ADDRLEN;
break;
case AFNUM_INET6:
tvb_get_ipv6(tvb, offset, &locator_v6);
proto_tree_add_text(lisp_mapping_tree, tvb, 0, 8 + INET6_ADDRLEN,
"%sRLOC: %s%s, %s, Priority/Weight: %d/%d, Multicast Priority/Weight: %d/%d",
(flags&LOCAL_BIT_MASK) ? "Local " : "",
ip6_to_str(&locator_v6),
(flags&PROBE_BIT_MASK) ? " (probed)" : "",
(flags&REACH_BIT_MASK) ? "Reachable" : "Unreachable",
prio, weight, m_prio, m_weight);
offset += INET6_ADDRLEN;
break;
default:
proto_tree_add_text(lisp_mapping_tree, tvb, 0, 2, "Unexpected AFI, cannot decode");
next_tvb = tvb_new_subset(tvb, offset, -1, -1);
call_dissector(data_handle, next_tvb, pinfo, lisp_mapping_tree);
}
return offset;
}
/*
* Dissector code for mapping records within control packets
*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Record TTL |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Locator Count | EID mask-len | ACT |A| Reserved |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Rsvd | Map-Version Number | EID-AFI |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | EID-prefix |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
*/
static int
dissect_lisp_mapping(tvbuff_t *tvb, packet_info *pinfo, proto_tree *lisp_tree, guint8 rec_cnt)
{
int i;
gint offset = 0;
gint mapver_offset = 0;
guint32 ttl;
guint8 loc_cnt;
guint8 prefix_mask, flags, act;
guint16 prefix_afi;
guint32 prefix_v4;
struct e_in6_addr prefix_v6;
proto_item *tir;
proto_tree *lisp_mapping_tree;
tvbuff_t *next_tvb;
const char *lisp_actions[] = {
"No-Action",
"Natively-Forward",
"Send-Map-Request",
"Drop",
"Illegal action value"
};
ttl = tvb_get_ntohl(tvb, offset); offset += 4;
loc_cnt = tvb_get_guint8(tvb, offset); offset += 1;
prefix_mask = tvb_get_guint8(tvb, offset); offset += 1;
flags = tvb_get_guint8(tvb, offset); offset += 2;
mapver_offset = offset; offset += 2;
prefix_afi = tvb_get_ntohs(tvb, offset); offset += 2;
act = flags & LISP_MAP_ACT;
act >>= 5;
if (act > 3) act = 4;
switch (prefix_afi) {
case AFNUM_INET:
prefix_v4 = tvb_get_ipv4(tvb, offset);
tir = proto_tree_add_text(lisp_tree, tvb, 0, 12 + INET_ADDRLEN,
"EID prefix: %s/%d, TTL: %s, %sAuthoritative, %s",
ip_to_str((guint8 *)&prefix_v4), prefix_mask,
(ttl == 0xFFFFFFFF) ? "Unlimited" : g_strdup_printf("%d", ttl),
(flags&LISP_MAP_AUTH) ? "" : "Not ", lisp_actions[act]);
offset += INET_ADDRLEN;
/* Update the INFO column if there is only one record */
if (rec_cnt == 1)
col_append_fstr(pinfo->cinfo, COL_INFO, " for %s/%d",
ip_to_str((guint8 *)&prefix_v4), prefix_mask);
break;
case AFNUM_INET6:
tvb_get_ipv6(tvb, offset, &prefix_v6);
tir = proto_tree_add_text(lisp_tree, tvb, 0, 12 + INET6_ADDRLEN,
"EID prefix: %s/%d, TTL: %s, %sAuthoritative, %s",
ip6_to_str(&prefix_v6), prefix_mask,
(ttl == 0xFFFFFFFF) ? "Unlimited" : g_strdup_printf("%d", ttl),
(flags&LISP_MAP_AUTH) ? "" : "Not ", lisp_actions[act]);
offset += INET6_ADDRLEN;
/* Update the INFO column if there is only one record */
if (rec_cnt == 1)
col_append_fstr(pinfo->cinfo, COL_INFO, " for %s/%d",
ip6_to_str(&prefix_v6), prefix_mask);
break;
default:
proto_tree_add_text(lisp_tree, tvb, 0, 2, "Unexpected AFI, cannot decode");
next_tvb = tvb_new_subset(tvb, offset, -1, -1);
call_dissector(data_handle, next_tvb, pinfo, lisp_tree);
return offset;
}
lisp_mapping_tree = proto_item_add_subtree(tir, ett_lisp_mapping);
/* Reserved (4 bits) */
proto_tree_add_item(lisp_mapping_tree, hf_lisp_mapping_res, tvb, mapver_offset, 2, FALSE);
/* Map-Version Number (12 bits) */
proto_tree_add_item(lisp_mapping_tree, hf_lisp_mapping_ver, tvb, mapver_offset, 2, FALSE);
/* Locators */
for(i=0; i < loc_cnt; i++) {
tvbuff_t *loc_tvb;
int len = 0;
loc_tvb = tvb_new_subset(tvb, offset, -1, -1);
len = dissect_lisp_locator(loc_tvb, pinfo, lisp_mapping_tree);
offset += len;
}
return offset;
}
/*
* Dissector code for Map-Request type control packets
*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* |Type=1 |A|M|P|S|p|s| Reserved | IRC | Record Count |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Nonce . . . |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | . . . Nonce |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Source-EID-AFI | Source EID Address ... |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ITR-RLOC-AFI 1 | ITR-RLOC Address 1 ... |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ... |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ITR-RLOC-AFI n | ITR-RLOC Address n ... |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* / | Reserved | EID mask-len | EID-prefix-AFI |
* Rec +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* \ | EID-prefix ... |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Map-Reply Record ... |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
*/
static void
dissect_lisp_map_request(tvbuff_t *tvb, packet_info *pinfo, proto_tree *lisp_tree)
{
int i;
gint offset = 0;
gboolean mrep = FALSE;
guint8 flags;
guint8 itr_rec_cnt = 0;
guint8 rec_cnt = 0;
guint16 src_eid_afi;
struct e_in6_addr e_in6_addr;
tvbuff_t *next_tvb;
/* Flags (6 bits)*/
flags = tvb_get_guint8(tvb, offset);
mrep = flags & (MAP_REQ_FLAG_M >> 16);
proto_tree_add_item(lisp_tree, hf_lisp_mreq_flags_auth, tvb, offset, 3, FALSE);
proto_tree_add_item(lisp_tree, hf_lisp_mreq_flags_mrp, tvb, offset, 3, FALSE);
proto_tree_add_item(lisp_tree, hf_lisp_mreq_flags_probe, tvb, offset, 3, FALSE);
proto_tree_add_item(lisp_tree, hf_lisp_mreq_flags_smr, tvb, offset, 3, FALSE);
proto_tree_add_item(lisp_tree, hf_lisp_mreq_flags_pitr, tvb, offset, 3, FALSE);
proto_tree_add_item(lisp_tree, hf_lisp_mreq_flags_smri, tvb, offset, 3, FALSE);
/* Reserved bits (9 bits) */
proto_tree_add_item(lisp_tree, hf_lisp_mreq_res, tvb, offset, 3, FALSE);
/* ITR record count (5 bits) */
itr_rec_cnt = tvb_get_guint8(tvb, offset + 2) & 0x1F;
proto_tree_add_item(lisp_tree, hf_lisp_irc, tvb, offset, 3, FALSE);
offset += 3;
/* Record count (8 bits) */
rec_cnt = tvb_get_guint8(tvb, offset);
proto_tree_add_item(lisp_tree, hf_lisp_records, tvb, offset, 1, FALSE);
offset += 1;
/* Nonce (64 bits) */
proto_tree_add_item(lisp_tree, hf_lisp_nonce, tvb, offset, 8, FALSE);
offset += 8;
/* Source EID AFI (16 bits) */
src_eid_afi = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(lisp_tree, hf_lisp_mreq_srceid_afi, tvb, offset, 2, FALSE);
offset += 2;
/* Source EID */
switch (src_eid_afi) {
case AFNUM_RESERVED:
proto_tree_add_text(lisp_tree, tvb, offset, 0, "(Source EID not present)");
break;
case AFNUM_INET:
proto_tree_add_ipv4(lisp_tree,
hf_lisp_mreq_srceid, tvb, offset, INET_ADDRLEN, tvb_get_ipv4(tvb, offset));
offset += INET_ADDRLEN;
break;
case AFNUM_INET6:
tvb_get_ipv6(tvb, offset, &e_in6_addr);
proto_tree_add_ipv6(lisp_tree,
hf_lisp_mreq_srceidv6, tvb, offset, INET6_ADDRLEN, (guint8 *)&e_in6_addr);
offset += INET6_ADDRLEN;
break;
default:
proto_tree_add_text(lisp_tree, tvb, offset, 0,
"Unexpected Source EID AFI, cannot decode");
next_tvb = tvb_new_subset(tvb, offset, -1, -1);
call_dissector(data_handle, next_tvb, pinfo, lisp_tree);
return;
}
/* ITR records */
for(i=0; i < itr_rec_cnt+1; i++) {
guint16 itr_afi;
guint32 itr_rloc_v4;
struct e_in6_addr itr_rloc_v6;
proto_item *tir;
proto_tree *lisp_itr_tree;
itr_afi = tvb_get_ntohs(tvb, offset);
switch (itr_afi) {
case AFNUM_INET:
itr_rloc_v4 = tvb_get_ipv4(tvb, offset + 2);
tir = proto_tree_add_text(lisp_tree, tvb, offset, INET_ADDRLEN + 2,
"ITR-RLOC %d: %s", i + 1, ip_to_str((guint8 *)&itr_rloc_v4));
lisp_itr_tree = proto_item_add_subtree(tir, ett_lisp_itr);
proto_tree_add_text(lisp_itr_tree, tvb, offset, 2, "ITR-RLOC-AFI: %d", itr_afi);
proto_tree_add_ipv4(lisp_itr_tree, hf_lisp_mreq_srcitr, tvb, offset + 2,
INET_ADDRLEN, itr_rloc_v4);
offset += INET_ADDRLEN + 2;
break;
case AFNUM_INET6:
tvb_get_ipv6(tvb, offset + 2, &itr_rloc_v6);
tir = proto_tree_add_text(lisp_tree, tvb, offset, INET6_ADDRLEN + 2,
"ITR-RLOC %d: %s", i + 1, ip6_to_str(&itr_rloc_v6));
lisp_itr_tree = proto_item_add_subtree(tir, ett_lisp_itr);
proto_tree_add_text(lisp_itr_tree, tvb, offset, 2, "ITR-RLOC-AFI: %d", itr_afi);
proto_tree_add_ipv6(lisp_itr_tree, hf_lisp_mreq_srcitrv6, tvb, offset + 2,
INET6_ADDRLEN, (guint8 *)&itr_rloc_v6);
offset += INET6_ADDRLEN + 2;
break;
default:
proto_tree_add_text(lisp_tree, tvb, offset, 2,
"Unexpected ITR-RLOC-AFI, cannot decode");
next_tvb = tvb_new_subset(tvb, offset, -1, -1);
call_dissector(data_handle, next_tvb, pinfo, lisp_tree);
return;
}
}
/* Query records */
for(i=0; i < rec_cnt; i++) {
guint8 reserved;
guint8 prefix_mask;
guint16 prefix_afi;
guint32 prefix_v4;
struct e_in6_addr prefix_v6;
proto_item *tir;
proto_tree *lisp_record_tree;
reserved = tvb_get_guint8(tvb, offset);
prefix_mask = tvb_get_guint8(tvb, offset + 1);
prefix_afi = tvb_get_ntohs(tvb, offset + 2);
switch (prefix_afi) {
case AFNUM_INET:
prefix_v4 = tvb_get_ipv4(tvb, offset + 4);
tir = proto_tree_add_text(lisp_tree, tvb, offset, 4 + INET_ADDRLEN,
"Record %d: %s/%d",
i+1, ip_to_str((guint8 *)&prefix_v4), prefix_mask);
/* Update the INFO column if there is only one record */
if (rec_cnt == 1)
col_append_fstr(pinfo->cinfo, COL_INFO, " for %s/%d",
ip_to_str((guint8 *)&prefix_v4), prefix_mask);
lisp_record_tree = proto_item_add_subtree(tir, ett_lisp_record);
proto_tree_add_text(lisp_record_tree, tvb, offset, 1, "Reserved bits: 0x%02X",
reserved);
proto_tree_add_text(lisp_record_tree, tvb, offset + 1, 1, "Prefix length: %d",
prefix_mask);
proto_tree_add_text(lisp_record_tree, tvb, offset + 2, 2, "Prefix AFI: %d",
prefix_afi);
proto_tree_add_text(lisp_record_tree, tvb, offset + 4, INET_ADDRLEN, "Prefix: %s",
ip_to_str((guint8 *)&prefix_v4));
offset += 4 + INET_ADDRLEN;
break;
case AFNUM_INET6:
tvb_get_ipv6(tvb, offset + 4, &prefix_v6);
tir = proto_tree_add_text(lisp_tree, tvb, offset, 4 + INET6_ADDRLEN,
"Record %d: %s/%d",
i+1, ip6_to_str(&prefix_v6), prefix_mask);
/* Update the INFO column if there is only one record */
if (rec_cnt == 1)
col_append_fstr(pinfo->cinfo, COL_INFO, " for %s/%d",
ip6_to_str(&prefix_v6), prefix_mask);
lisp_record_tree = proto_item_add_subtree(tir, ett_lisp_record);
proto_tree_add_text(lisp_record_tree, tvb, offset, 1, "Reserved bits: 0x%02X",
reserved);
proto_tree_add_text(lisp_record_tree, tvb, offset + 1, 1, "Prefix length: %d",
prefix_mask);
proto_tree_add_text(lisp_record_tree, tvb, offset + 2, 2, "Prefix AFI: %d",
prefix_afi);
proto_tree_add_text(lisp_record_tree, tvb, offset + 4, INET6_ADDRLEN, "Prefix: %s",
ip6_to_str(&prefix_v6));
offset += 4 + INET6_ADDRLEN;
break;
default:
proto_tree_add_text(lisp_tree, tvb, offset, 2, "Unexpected AFI, cannot decode");
next_tvb = tvb_new_subset(tvb, offset, -1, -1);
call_dissector(data_handle, next_tvb, pinfo, lisp_tree);
return;
}
}
/* If M bit is set, we also have a Map-Reply */
if (mrep) {
int len = 0;
tvbuff_t *rep_tvb;
proto_item *tim;
proto_tree *lisp_mr_tree;
tim = proto_tree_add_text(lisp_tree, tvb, offset, -1, "Map-Reply record");
lisp_mr_tree = proto_item_add_subtree(tim, ett_lisp_mr);
rep_tvb = tvb_new_subset(tvb, offset, -1, -1);
len = dissect_lisp_mapping(rep_tvb, pinfo, lisp_mr_tree, 0);
offset += len;
}
next_tvb = tvb_new_subset(tvb, offset, -1, -1);
call_dissector(data_handle, next_tvb, pinfo, lisp_tree);
}
/*
* Dissector code for Map-Reply type control packets
*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* |Type=2 |P|E| Reserved | Record Count |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Nonce . . . |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | . . . Nonce |
* +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | | Record TTL |
* | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* R | Locator Count | EID mask-len | ACT |A| Reserved |
* e +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* c | Rsvd | Map-Version Number | EID-AFI |
* o +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* r | EID-prefix |
* d +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | /| Priority | Weight | M Priority | M Weight |
* | L +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | o | Unused Flags |L|p|R| Loc-AFI |
* | c +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | \| Locator |
* +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
*/
static void
dissect_lisp_map_reply(tvbuff_t *tvb, packet_info *pinfo, proto_tree *lisp_tree)
{
int i;
gint offset = 0;
guint8 rec_cnt = 0;
tvbuff_t *next_tvb;
/* Flags (2 bits) */
proto_tree_add_item(lisp_tree, hf_lisp_mrep_flags_probe, tvb, offset, 3, FALSE);
proto_tree_add_item(lisp_tree, hf_lisp_mrep_flags_enlr, tvb, offset, 3, FALSE);
/* Reserved bits (18 bits) */
proto_tree_add_item(lisp_tree, hf_lisp_mrep_res, tvb, offset, 3, FALSE);
offset += 3;
/* Record count (8 bits) */
rec_cnt = tvb_get_guint8(tvb, offset);
proto_tree_add_item(lisp_tree, hf_lisp_records, tvb, offset, 1, FALSE);
offset += 1;
/* Nonce (64 bits) */
proto_tree_add_item(lisp_tree, hf_lisp_nonce, tvb, offset, 8, FALSE);
offset += 8;
/* Reply records */
for(i=0; i < rec_cnt; i++) {
tvbuff_t *rec_tvb;
int len = 0;
rec_tvb = tvb_new_subset(tvb, offset, -1, -1);
len = dissect_lisp_mapping(rec_tvb, pinfo, lisp_tree, rec_cnt);
offset += len;
}
next_tvb = tvb_new_subset(tvb, offset, -1, -1);
call_dissector(data_handle, next_tvb, pinfo, lisp_tree);
}
/*
* Dissector code for Map-Register type control packets
*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* |Type=3 |P| Reserved |M| Record Count |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Nonce . . . |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | . . . Nonce |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Key ID | Authentication Data Length |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* ~ Authentication Data ~
* +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | | Record TTL |
* | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* R | Locator Count | EID mask-len | ACT |A| Reserved |
* e +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* c | Rsvd | Map-Version Number | EID-AFI |
* o +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* r | EID-prefix |
* d +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | /| Priority | Weight | M Priority | M Weight |
* | L +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | o | Unused Flags |L|p|R| Loc-AFI |
* | c +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | \| Locator |
* +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
*/
static void
dissect_lisp_map_register(tvbuff_t *tvb, packet_info *pinfo, proto_tree *lisp_tree)
{
int i;
gint offset = 0;
guint8 rec_cnt = 0;
tvbuff_t *next_tvb;
guint16 authlen = 0;
/* Flags (1 bit) */
proto_tree_add_item(lisp_tree, hf_lisp_mreg_flags_pmr, tvb, offset, 3, FALSE);
/* Reserved bits (18 bits) */
proto_tree_add_item(lisp_tree, hf_lisp_mreg_res, tvb, offset, 3, FALSE);
/* Flags (1 bit) */
proto_tree_add_item(lisp_tree, hf_lisp_mreg_flags_wmn, tvb, offset, 3, FALSE);
offset += 3;
/* Record count (8 bits) */
rec_cnt = tvb_get_guint8(tvb, offset);
proto_tree_add_item(lisp_tree, hf_lisp_records, tvb, offset, 1, FALSE);
offset += 1;
/* Nonce (64 bits) */
proto_tree_add_item(lisp_tree, hf_lisp_nonce, tvb, offset, 8, FALSE);
offset += 8;
/* Key ID (16 bits) */
proto_tree_add_item(lisp_tree, hf_lisp_mreg_keyid, tvb, offset, 2, FALSE);
offset += 2;
/* Authentication Data Length (16 bits) */
authlen = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(lisp_tree, hf_lisp_mreg_authlen, tvb, offset, 2, FALSE);
offset += 2;
/* Authentication Data */
/* XXX: need to check is there is still enough data in buffer */
proto_tree_add_item(lisp_tree, hf_lisp_mreg_auth, tvb, offset, authlen, FALSE);
offset += authlen;
for(i=0; i < rec_cnt; i++) {
tvbuff_t *rec_tvb;
int len = 0;
rec_tvb = tvb_new_subset(tvb, offset, -1, -1);
len = dissect_lisp_mapping(rec_tvb, pinfo, lisp_tree, rec_cnt);
offset += len;
}
next_tvb = tvb_new_subset(tvb, offset, -1, -1);
call_dissector(data_handle, next_tvb, pinfo, lisp_tree);
}
/*
* Dissector code for Map-Notify type control packets
*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* |Type=4 | Reserved | Record Count |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Nonce . . . |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | . . . Nonce |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Key ID | Authentication Data Length |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* ~ Authentication Data ~
* +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | | Record TTL |
* | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* R | Locator Count | EID mask-len | ACT |A| Reserved |
* e +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* c | Rsvd | Map-Version Number | EID-AFI |
* o +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* r | EID-prefix |
* d +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | /| Priority | Weight | M Priority | M Weight |
* | L +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | o | Unused Flags |L|p|R| Loc-AFI |
* | c +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | \| Locator |
* +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
*/
static void
dissect_lisp_map_notify(tvbuff_t *tvb, packet_info *pinfo, proto_tree *lisp_tree)
{
int i;
gint offset = 0;
guint8 rec_cnt = 0;
tvbuff_t *next_tvb;
guint16 authlen = 0;
/* Reserved bits (20 bits) */
proto_tree_add_item(lisp_tree, hf_lisp_mnot_res, tvb, offset, 3, FALSE);
offset += 3;
/* Record count (8 bits) */
rec_cnt = tvb_get_guint8(tvb, offset);
proto_tree_add_item(lisp_tree, hf_lisp_records, tvb, offset, 1, FALSE);
offset += 1;
/* Nonce (64 bits) */
proto_tree_add_item(lisp_tree, hf_lisp_nonce, tvb, offset, 8, FALSE);
offset += 8;
/* Key ID (16 bits) */
proto_tree_add_item(lisp_tree, hf_lisp_mnot_keyid, tvb, offset, 2, FALSE);
offset += 2;
/* Authentication Data Length (16 bits) */
authlen = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(lisp_tree, hf_lisp_mnot_authlen, tvb, offset, 2, FALSE);
offset += 2;
/* Authentication Data */
/* XXX: need to check is there is still enough data in buffer */
proto_tree_add_item(lisp_tree, hf_lisp_mnot_auth, tvb, offset, authlen, FALSE);
offset += authlen;
for(i=0; i < rec_cnt; i++) {
tvbuff_t *rec_tvb;
int len = 0;
rec_tvb = tvb_new_subset(tvb, offset, -1, -1);
len = dissect_lisp_mapping(rec_tvb, pinfo, lisp_tree, rec_cnt);
offset += len;
}
next_tvb = tvb_new_subset(tvb, offset, -1, -1);
call_dissector(data_handle, next_tvb, pinfo, lisp_tree);
}
/*
* Dissector code for Encapsulated Control Message type packets
*
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* |Type=8 | Reserved |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | IPv4 or IPv6 Header |
* | (uses RLOC or EID addresses) |
* ~ ~
*
*/
static void
dissect_lisp_ecm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *lisp_tree)
{
tvbuff_t *next_tvb;
guint8 ip_ver;
proto_tree_add_item(lisp_tree, hf_lisp_ecm_res, tvb, 0, 4, FALSE);
/* Determine if encapsulated packet is IPv4 or IPv6, and call dissector */
next_tvb = tvb_new_subset(tvb, LISP_ECM_HEADER_LEN, -1, -1);
ip_ver = tvb_get_bits8(next_tvb, 0, 4);
switch (ip_ver) {
case 4:
call_dissector(ipv4_handle, next_tvb, pinfo, tree);
break;
case 6:
call_dissector(ipv6_handle, next_tvb, pinfo, tree);
break;
default:
call_dissector(data_handle, next_tvb, pinfo, tree);
break;
}
encapsulated = FALSE;
}
/*
* Main dissector code
*/
static int
dissect_lisp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint8 type;
proto_item *ti;
proto_tree *lisp_tree;
/* Clear Info column before fetching data in case an exception is thrown */
col_clear(pinfo->cinfo, COL_INFO);
type = tvb_get_bits8(tvb, 0, 4);
/* Make entries in Protocol column and Info column on summary display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "LISP");
if (encapsulated) {
col_add_fstr(pinfo->cinfo, COL_INFO, "Encapsulated %s", val_to_str(type, lisp_typevals,
"Unknown (0x%02x)"));
} else {
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(type, lisp_typevals,
"Unknown (0x%02x)"));
}
if (tree) {
/* create display subtree for the protocol */
ti = proto_tree_add_item(tree, proto_lisp, tvb, 0,
(type == LISP_ECM) ? LISP_ECM_HEADER_LEN : -1, FALSE);
lisp_tree = proto_item_add_subtree(ti, ett_lisp);
proto_tree_add_item(lisp_tree,
hf_lisp_type, tvb, 0, 3, FALSE);
switch (type) {
case LISP_MAP_REQUEST:
dissect_lisp_map_request(tvb, pinfo, lisp_tree);
break;
case LISP_MAP_REPLY:
dissect_lisp_map_reply(tvb, pinfo, lisp_tree);
break;
case LISP_MAP_REGISTER:
dissect_lisp_map_register(tvb, pinfo, lisp_tree);
break;
case LISP_MAP_NOTIFY:
dissect_lisp_map_notify(tvb, pinfo, lisp_tree);
break;
case LISP_ECM:
encapsulated = TRUE;
dissect_lisp_ecm(tvb, pinfo, tree, lisp_tree);
break;
default:
call_dissector(data_handle, tvb, pinfo, tree);
break;
}
}
/* Return the amount of data this dissector was able to dissect */
return tvb_length(tvb);
}
/*
* Register the LISP protocol with Wireshark
*/
void
proto_register_lisp(void)
{
/* Setup list of header fields */
static hf_register_info hf[] = {
{ &hf_lisp_type,
{ "Type", "lisp.type",
FT_UINT24, BASE_DEC, VALS(lisp_typevals), 0xF00000, "LISP Control Message Type", HFILL }},
{ &hf_lisp_irc,
{ "ITR-RLOC Count", "lisp.irc",
FT_UINT24, BASE_DEC, NULL, 0x00001F, NULL, HFILL }},
{ &hf_lisp_records,
{ "Record Count", "lisp.records",
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_lisp_nonce,
{ "Nonce", "lisp.nonce",
FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL }},
{ &hf_lisp_mreq_flags_auth,
{ "A bit (Authoritative)", "lisp.mreq.flags.auth",
FT_BOOLEAN, 24, TFS(&tfs_set_notset), MAP_REQ_FLAG_A, NULL, HFILL }},
{ &hf_lisp_mreq_flags_mrp,
{ "M bit (Map-Reply present)", "lisp.mreq.flags.mrp",
FT_BOOLEAN, 24, TFS(&tfs_set_notset), MAP_REQ_FLAG_M, NULL, HFILL }},
{ &hf_lisp_mreq_flags_probe,
{ "P bit (Probe)", "lisp.mreq.flags.probe",
FT_BOOLEAN, 24, TFS(&tfs_set_notset), MAP_REQ_FLAG_P, NULL, HFILL }},
{ &hf_lisp_mreq_flags_smr,
{ "S bit (Solicit-Map-Request)", "lisp.mreq.flags.smr",
FT_BOOLEAN, 24, TFS(&tfs_set_notset), MAP_REQ_FLAG_S, NULL, HFILL }},
{ &hf_lisp_mreq_flags_pitr,
{ "p bit (Proxy ITR)", "lisp.mreq.flags.pitr",
FT_BOOLEAN, 24, TFS(&tfs_set_notset), MAP_REQ_FLAG_p, NULL, HFILL }},
{ &hf_lisp_mreq_flags_smri,
{ "s bit (SMR-invoked)", "lisp.mreq.flags.smri",
FT_BOOLEAN, 24, TFS(&tfs_set_notset), MAP_REQ_FLAG_s, NULL, HFILL }},
{ &hf_lisp_mreq_res,
{ "Reserved bits", "lisp.mreq.res",
FT_UINT24, BASE_HEX, NULL, MAP_REQ_RESERVED, "Must be zero", HFILL }},
{ &hf_lisp_mreq_srceid_afi,
{ "Source EID AFI", "lisp.mreq.srceid_afi",
FT_UINT16, BASE_DEC, NULL, 0x0, "Source EID Address Family Indicator", HFILL }},
{ &hf_lisp_mreq_srceid,
{ "Source EID", "lisp.mreq.srceid",
FT_IPv4, BASE_NONE, NULL, 0x0, "Source EID Address", HFILL }},
{ &hf_lisp_mreq_srceidv6,
{ "Source EID", "lisp.mreq.srceidv6",
FT_IPv6, BASE_NONE, NULL, 0x0, "Source EID Address", HFILL }},
{ &hf_lisp_mreq_srcitr,
{ "ITR-RLOC Address", "lisp.mreq.srcitr",
FT_IPv4, BASE_NONE, NULL, 0x0, "Originating ITR RLOC Address", HFILL }},
{ &hf_lisp_mreq_srcitrv6,
{ "ITR-RLOC Address", "lisp.mreq.srcitrv6",
FT_IPv6, BASE_NONE, NULL, 0x0, "Originating ITR RLOC Address", HFILL }},
{ &hf_lisp_mrep_flags,
{ "Flags", "lisp.mrep.flags",
FT_UINT8, BASE_HEX, NULL, 0x06, NULL, HFILL }},
{ &hf_lisp_mrep_flags_probe,
{ "P bit (Probe)", "lisp.mrep.flags.probe",
FT_BOOLEAN, 24, TFS(&tfs_set_notset), MAP_REP_FLAG_P, NULL, HFILL }},
{ &hf_lisp_mrep_flags_enlr,
{ "E bit (Echo-Nonce locator reachability algorithm enabled)", "lisp.mrep.flags.enlr",
FT_BOOLEAN, 24, TFS(&tfs_set_notset), MAP_REP_FLAG_E, NULL, HFILL }},
{ &hf_lisp_mrep_res,
{ "Reserved bits", "lisp.mrep.res",
FT_UINT24, BASE_HEX, NULL, MAP_REP_RESERVED, "Must be zero", HFILL }},
{ &hf_lisp_mreg_flags,
{ "Flags", "lisp.mreg.flags",
FT_UINT8, BASE_HEX, NULL, 0x08, NULL, HFILL }},
{ &hf_lisp_mreg_flags_pmr,
{ "P bit (Proxy-Map-Reply)", "lisp.mreg.flags.pmr",
FT_BOOLEAN, 24, TFS(&tfs_set_notset), MAP_REG_FLAG_P, NULL, HFILL }},
{ &hf_lisp_mreg_flags_wmn,
{ "M bit (Want-Map-Notify)", "lisp.mreg.flags.pmr",
FT_BOOLEAN, 24, TFS(&tfs_set_notset), MAP_REG_FLAG_M, NULL, HFILL }},
{ &hf_lisp_mreg_res,
{ "Reserved bits", "lisp.mreg.res",
FT_UINT24, BASE_HEX, NULL, MAP_REG_RESERVED, "Must be zero", HFILL }},
{ &hf_lisp_mreg_keyid,
{ "Key ID", "lisp.mreg.keyid",
FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
{ &hf_lisp_mreg_authlen,
{ "Authentication Data Length", "lisp.mreg.authlen",
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_lisp_mreg_auth,
{ "Authentication Data", "lisp.mreg.auth",
FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_lisp_mnot_res,
{ "Reserved bits", "lisp.mnot.res",
FT_UINT24, BASE_HEX, NULL, MAP_NOT_RESERVED, "Must be zero", HFILL }},
{ &hf_lisp_mnot_keyid,
{ "Key ID", "lisp.mnot.keyid",
FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
{ &hf_lisp_mnot_authlen,
{ "Authentication Data Length", "lisp.mnot.authlen",
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_lisp_mnot_auth,
{ "Authentication Data", "lisp.mnot.auth",
FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_lisp_mapping_res,
{ "Reserved", "lisp.mapping.res",
FT_UINT16, BASE_HEX, NULL, 0xF000, NULL, HFILL }},
{ &hf_lisp_mapping_ver,
{ "Mapping Version", "lisp.mapping.ver",
FT_UINT16, BASE_DEC, NULL, 0x0FFF, NULL, HFILL }},
{ &hf_lisp_ecm_res,
{ "Reserved bits", "lisp.ecm_res",
FT_UINT32, BASE_HEX, NULL, 0x0FFFFFFF, NULL, HFILL }},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_lisp,
&ett_lisp_mr,
&ett_lisp_mapping,
&ett_lisp_itr,
&ett_lisp_record
};
/* Register the protocol name and description */
proto_lisp = proto_register_protocol("Locator/ID Separation Protocol",
"LISP Control", "lisp");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_lisp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
/*
* Simple form of proto_reg_handoff_lisp which can be used if there are
* no prefs-dependent registration function calls.
*/
void
proto_reg_handoff_lisp(void)
{
dissector_handle_t lisp_handle;
lisp_handle = new_create_dissector_handle(dissect_lisp, proto_lisp);
dissector_add_uint("udp.port", LISP_CONTROL_PORT, lisp_handle);
ipv4_handle = find_dissector("ip");
ipv6_handle = find_dissector("ipv6");
data_handle = find_dissector("data");
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=4 expandtab:
* :indentSize=4:tabSize=4:noTabs=true:
*/
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