and Network Service Header.
This code stands for following internet drafts:
- VXLAN GPE: draft-ietf-nvo3-vxlan-gpe-01
- NSH: draft-ietf-sfc-nsh-01
print-vrrp.c \
print-vtp.c \
print-vxlan.c \
+ print-vxlan-gpe.c \
+ print-nsh.c \
print-wb.c \
print-zephyr.c \
print-zeromq.c \
extern void vrrp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
extern void vtp_print(netdissect_options *, const u_char *, u_int);
extern void vxlan_print(netdissect_options *, const u_char *, u_int);
+extern void vxlan_gpe_print(netdissect_options *ndo, const u_char *bp, u_int len);
extern void wb_print(netdissect_options *, const void *, u_int);
extern void zephyr_print(netdissect_options *, const u_char *, int);
extern void zmtp1_print(netdissect_options *, const u_char *, u_int);
extern void zmtp1_print_datagram(netdissect_options *, const u_char *, const u_int);
+extern void nsh_print(netdissect_options *ndo, const u_char *bp, u_int len);
/* checksum routines */
extern void init_checksum(void);
--- /dev/null
+/* Copyright (c) 2015, bugyo
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <netdissect-stdinc.h>
+
+#include "netdissect.h"
+#include "extract.h"
+
+static const char tstr[] = " [|NSH]";
+static const struct tok nsh_flags [] = {
+ { 0x20, "O" },
+ { 0x10, "C" },
+ { 0, NULL }
+};
+
+#define NSH_BASE_HDR_LEN 4
+#define NSH_SERVICE_PATH_HDR_LEN 4
+#define NSH_HDR_WORD_SIZE 4
+
+/*
+ * NSH, draft-ietf-sfc-nsh-01 Network Service Header
+ */
+
+void
+nsh_print(netdissect_options *ndo, const u_char *bp, u_int len)
+{
+ int n, vn;
+ uint8_t ver;
+ uint8_t flags;
+ uint8_t length;
+ uint8_t md_type;
+ uint8_t next_protocol;
+ uint32_t service_path_id;
+ uint8_t service_index;
+ uint32_t ctx;
+ uint16_t tlv_class;
+ uint8_t tlv_type;
+ uint8_t tlv_len;
+ u_int next_len;
+
+ /* print Base Header and Service Path Header */
+ if (len < NSH_BASE_HDR_LEN + NSH_SERVICE_PATH_HDR_LEN)
+ goto trunc;
+
+ ND_TCHECK2(*bp, NSH_BASE_HDR_LEN + NSH_SERVICE_PATH_HDR_LEN);
+
+ ver = (uint8_t)(*bp >> 6);
+ flags = *bp;
+ bp += 1;
+ length = *bp;
+ bp += 1;
+ md_type = *bp;
+ bp += 1;
+ next_protocol = *bp;
+ bp += 1;
+ service_path_id = EXTRACT_24BITS(bp);
+ bp += 3;
+ service_index = *bp;
+ bp += 1;
+
+ ND_PRINT((ndo, "NSH, "));
+ if (ndo->ndo_vflag > 1) {
+ ND_PRINT((ndo, "ver %d, ", ver));
+ }
+ ND_PRINT((ndo, "flags [%s], ", bittok2str_nosep(nsh_flags, "none", flags)));
+ if (ndo->ndo_vflag > 2) {
+ ND_PRINT((ndo, "length %d, ", length));
+ ND_PRINT((ndo, "md type 0x%x, ", md_type));
+ }
+ if (ndo->ndo_vflag > 1) {
+ ND_PRINT((ndo, "next-protocol 0x%x, ", next_protocol));
+ }
+ ND_PRINT((ndo, "service-path-id 0x%06x, ", service_path_id));
+ ND_PRINT((ndo, "service-index 0x%x", service_index));
+
+ /* print Context Headers */
+ if (len < length * NSH_HDR_WORD_SIZE)
+ goto trunc;
+
+ ND_TCHECK2(*bp, length * NSH_HDR_WORD_SIZE);
+
+ if (ndo->ndo_vflag > 2) {
+ if (md_type == 0x01) {
+ for (n = 0; n < length - 2; n++) {
+ ctx = EXTRACT_32BITS(bp);
+ bp += NSH_HDR_WORD_SIZE;
+ ND_PRINT((ndo, "\n Context[%02d]: 0x%08x", n, ctx));
+ }
+ }
+ else if (md_type == 0x02) {
+ n = 0;
+ while (n < length - 2) {
+ tlv_class = EXTRACT_16BITS(bp);
+ bp += 2;
+ tlv_type = *bp;
+ bp += 1;
+ tlv_len = *bp;
+ bp += 1;
+
+ ND_PRINT((ndo, "\n TLV Class %d, Type %d, Len %d",
+ tlv_class, tlv_type, tlv_len));
+
+ n += 1;
+
+ if (length - 2 < n + tlv_len) {
+ ND_PRINT((ndo, " ERROR: invalid-tlv-length"));
+ return;
+ }
+
+ for (vn = 0; vn < tlv_len; vn++) {
+ ctx = EXTRACT_32BITS(bp);
+ bp += NSH_HDR_WORD_SIZE;
+ ND_PRINT((ndo, "\n Value[%02d]: 0x%08x", vn, ctx));
+ }
+ n += tlv_len;
+ }
+ }
+ else {
+ ND_PRINT((ndo, "ERROR: unknown-next-protocol"));
+ return;
+ }
+ }
+ else {
+ bp += (length - 2) * NSH_HDR_WORD_SIZE;
+ }
+ ND_PRINT((ndo, ndo->ndo_vflag ? "\n " : ": "));
+
+ /* print Next Protocol */
+ next_len = len - length * NSH_HDR_WORD_SIZE;
+ switch (next_protocol) {
+ case 0x1:
+ ip_print(ndo, bp, next_len);
+ break;
+ case 0x2:
+ ip6_print(ndo, bp, next_len);
+ break;
+ case 0x3:
+ ether_print(ndo, bp, next_len, next_len, NULL, NULL);
+ break;
+ default:
+ ND_PRINT((ndo, "ERROR: unknown-next-protocol"));
+ return;
+ }
+
+ return;
+
+trunc:
+ ND_PRINT((ndo, "%s", tstr));
+}
+
geneve_print(ndo, (const u_char *)(up + 1), length);
else if (IS_SRC_OR_DST_PORT(LISP_CONTROL_PORT))
lisp_print(ndo, (const u_char *)(up + 1), length);
+ else if (IS_SRC_OR_DST_PORT(VXLAN_GPE_PORT))
+ vxlan_gpe_print(ndo, (const u_char *)(up + 1), length);
else if (ND_TTEST(((const struct LAP *)cp)->type) &&
((const struct LAP *)cp)->type == lapDDP &&
(atalk_port(sport) || atalk_port(dport))) {
--- /dev/null
+/* Copyright (c) 2015, bugyo
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <netdissect-stdinc.h>
+
+#include "netdissect.h"
+#include "extract.h"
+
+static const char tstr[] = " [|VXLAN-GPE]";
+static const struct tok vxlan_gpe_flags [] = {
+ { 0x08, "I" },
+ { 0x04, "P" },
+ { 0x01, "O" },
+ { 0, NULL }
+};
+
+#define VXLAN_GPE_HDR_LEN 8
+
+/*
+ * VXLAN GPE header, draft-ietf-nvo3-vxlan-gpe-01
+ * Generic Protocol Extension for VXLAN
+ *
+ * 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
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |R|R|Ver|I|P|R|O| Reserved |Next Protocol |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | VXLAN Network Identifier (VNI) | Reserved |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+
+void
+vxlan_gpe_print(netdissect_options *ndo, const u_char *bp, u_int len)
+{
+ uint8_t flags;
+ uint8_t next_protocol;
+ uint32_t vni;
+
+ if (len < VXLAN_GPE_HDR_LEN)
+ goto trunc;
+
+ ND_TCHECK2(*bp, VXLAN_GPE_HDR_LEN);
+
+ flags = *bp;
+ bp += 3;
+
+ next_protocol = *bp;
+ bp += 1;
+
+ vni = EXTRACT_24BITS(bp);
+ bp += 4;
+
+ ND_PRINT((ndo, "VXLAN-GPE, "));
+ ND_PRINT((ndo, "flags [%s], ",
+ bittok2str_nosep(vxlan_gpe_flags, "none", flags)));
+ ND_PRINT((ndo, "vni %u", vni));
+ ND_PRINT((ndo, ndo->ndo_vflag ? "\n " : ": "));
+
+ switch (next_protocol) {
+ case 0x1:
+ ip_print(ndo, bp, len - 8);
+ break;
+ case 0x2:
+ ip6_print(ndo, bp, len - 8);
+ break;
+ case 0x3:
+ ether_print(ndo, bp, len - 8, len - 8, NULL, NULL);
+ break;
+ case 0x4:
+ nsh_print(ndo, bp, len - 8);
+ break;
+ case 0x5:
+ mpls_print(ndo, bp, len - 8);
+ break;
+ default:
+ ND_PRINT((ndo, "ERROR: unknown-next-protocol"));
+ return;
+ }
+
+ return;
+
+trunc:
+ ND_PRINT((ndo, "%s", tstr));
+}
+
# pcap-ng invalid version (first: version = 0.1 ; second: version = 1.1)
pcap-ng-invalid-vers-1 pcap-ng-invalid-vers-1.pcap pcap-ng-invalid-vers-1.out -t
pcap-ng-invalid-vers-2 pcap-ng-invalid-vers-2.pcap pcap-ng-invalid-vers-2.out -t
+
+# NSH over VxLAN-GPE
+nsh-over-vxlan-gpe nsh-over-vxlan-gpe.pcap nsh-over-vxlan-gpe.out -t
+nsh-over-vxlan-gpe-v nsh-over-vxlan-gpe.pcap nsh-over-vxlan-gpe-v.out -t -v
+nsh-over-vxlan-gpe-vv nsh-over-vxlan-gpe.pcap nsh-over-vxlan-gpe-vv.out -t -vv
+nsh-over-vxlan-gpe-vvv nsh-over-vxlan-gpe.pcap nsh-over-vxlan-gpe-vvv.out -t -vvv
--- /dev/null
+IP (tos 0x0, ttl 64, id 16419, offset 0, flags [DF], proto UDP (17), length 92)
+ 127.0.0.1.4790 > 127.0.0.1.4790: VXLAN-GPE, flags [IP], vni 16777215
+ NSH, flags [OC], service-path-id 0xffffff, service-index 0xff
+ IP (tos 0x0, ttl 255, id 54321, offset 0, flags [none], proto UDP (17), length 32)
+ 192.168.0.1.10000 > 192.168.0.2.20000: UDP, length 4
--- /dev/null
+IP (tos 0x0, ttl 64, id 16419, offset 0, flags [DF], proto UDP (17), length 92)
+ 127.0.0.1.4790 > 127.0.0.1.4790: [udp sum ok] VXLAN-GPE, flags [IP], vni 16777215
+ NSH, ver 0, flags [OC], next-protocol 0x1, service-path-id 0xffffff, service-index 0xff
+ IP (tos 0x0, ttl 255, id 54321, offset 0, flags [none], proto UDP (17), length 32)
+ 192.168.0.1.10000 > 192.168.0.2.20000: [udp sum ok] UDP, length 4
--- /dev/null
+IP (tos 0x0, ttl 64, id 16419, offset 0, flags [DF], proto UDP (17), length 92)
+ 127.0.0.1.4790 > 127.0.0.1.4790: [udp sum ok] VXLAN-GPE, flags [IP], vni 16777215
+ NSH, ver 0, flags [OC], length 6, md type 0x2, next-protocol 0x1, service-path-id 0xffffff, service-index 0xff
+ TLV Class 1, Type 2, Len 1
+ Value[00]: 0x12345678
+ TLV Class 2, Type 3, Len 1
+ Value[00]: 0x12345678
+ IP (tos 0x0, ttl 255, id 54321, offset 0, flags [none], proto UDP (17), length 32)
+ 192.168.0.1.10000 > 192.168.0.2.20000: [udp sum ok] UDP, length 4
--- /dev/null
+IP 127.0.0.1.4790 > 127.0.0.1.4790: VXLAN-GPE, flags [IP], vni 16777215: NSH, flags [OC], service-path-id 0xffffff, service-index 0xff: IP 192.168.0.1.10000 > 192.168.0.2.20000: UDP, length 4
#ifndef VXLAN_PORT
#define VXLAN_PORT 4789 /* RFC 7348 */
#endif
+#ifndef VXLAN_GPE_PORT
+#define VXLAN_GPE_PORT 4790 /* draft-ietf-nvo3-vxlan-gpe-01 */
+#endif
#ifndef SIP_DS_PORT
#define SIP_DS_PORT 5059 /*XXX*/
#endif
projects / tcpdump / commitdiff
