* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
- * Original code by Hannes Gredler (hannes@juniper.net)
+ * Original code by Hannes Gredler (hannes@gredler.at)
*/
-#ifndef lint
-static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-bfd.c,v 1.10 2006-02-02 06:35:52 hannes Exp $";
-#endif
+/* \summary: Bidirectional Forwarding Detection (BFD) printer */
+
+/*
+ * specification: draft-ietf-bfd-base-01 for version 0,
+ * RFC 5880 for version 1, and RFC 5881
+ */
#ifdef HAVE_CONFIG_H
-#include "config.h"
+#include <config.h>
#endif
-#include <tcpdump-stdinc.h>
-
-#include <stdio.h>
-#include <stdlib.h>
+#include "netdissect-stdinc.h"
-#include "interface.h"
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
#include "extract.h"
-#include "addrtoname.h"
#include "udp.h"
/*
- * Control packet, BFDv0, draft-katz-ward-bfd-01.txt
+ * Control packet, BFDv0, draft-ietf-bfd-base-01
*
* 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
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * |Vers | Diag |H|D|P|F| Rsvd | Detect Mult | Length |
+ * |Vers | Diag |H|D|P|F|C|A|Rsv| Detect Mult | Length |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | My Discriminator |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
/*
- * Control packet, BFDv1, draft-ietf-bfd-base-02.txt
+ * Control packet, BFDv1, RFC 5880
*
* 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
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * |Vers | Diag |Sta|P|F|C|A|D|R| Detect Mult | Length |
+ * |Vers | Diag |Sta|P|F|C|A|D|M| Detect Mult | Length |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | My Discriminator |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
struct bfd_header_t {
- u_int8_t version_diag;
- u_int8_t flags;
- u_int8_t detect_time_multiplier;
- u_int8_t length;
- u_int8_t my_discriminator[4];
- u_int8_t your_discriminator[4];
- u_int8_t desired_min_tx_interval[4];
- u_int8_t required_min_rx_interval[4];
- u_int8_t required_min_echo_interval[4];
+ nd_uint8_t version_diag;
+ nd_uint8_t flags;
+ nd_uint8_t detect_time_multiplier;
+ nd_uint8_t length;
+ nd_uint32_t my_discriminator;
+ nd_uint32_t your_discriminator;
+ nd_uint32_t desired_min_tx_interval;
+ nd_uint32_t required_min_rx_interval;
+ nd_uint32_t required_min_echo_interval;
};
/*
*/
struct bfd_auth_header_t {
- u_int8_t auth_type;
- u_int8_t auth_len;
- u_int8_t auth_data;
+ nd_uint8_t auth_type;
+ nd_uint8_t auth_len;
+ nd_uint8_t auth_data;
+ nd_uint8_t dummy; /* minimum 4 bytes */
+};
+
+enum auth_type {
+ AUTH_PASSWORD = 1,
+ AUTH_MD5 = 2,
+ AUTH_MET_MD5 = 3,
+ AUTH_SHA1 = 4,
+ AUTH_MET_SHA1 = 5
};
static const struct tok bfd_v1_authentication_values[] = {
- { 0, "Reserved" },
- { 1, "Simple Password" },
- { 2, "Keyed MD5" },
- { 3, "Meticulous Keyed MD5" },
- { 4, "Keyed SHA1" },
- { 5, "Meticulous Keyed SHA1" },
+ { AUTH_PASSWORD, "Simple Password" },
+ { AUTH_MD5, "Keyed MD5" },
+ { AUTH_MET_MD5, "Meticulous Keyed MD5" },
+ { AUTH_SHA1, "Keyed SHA1" },
+ { AUTH_MET_SHA1, "Meticulous Keyed SHA1" },
{ 0, NULL }
};
-#define BFD_EXTRACT_VERSION(x) (((x)&0xe0)>>5)
-#define BFD_EXTRACT_DIAG(x) ((x)&0x1f)
-
-static const struct tok bfd_port_values[] = {
- { BFD_CONTROL_PORT, "Control" },
- { BFD_ECHO_PORT, "Echo" },
- { 0, NULL }
+enum auth_length {
+ AUTH_PASSWORD_FIELD_MIN_LEN = 4, /* header + password min: 3 + 1 */
+ AUTH_PASSWORD_FIELD_MAX_LEN = 19, /* header + password max: 3 + 16 */
+ AUTH_MD5_FIELD_LEN = 24,
+ AUTH_MD5_HASH_LEN = 16,
+ AUTH_SHA1_FIELD_LEN = 28,
+ AUTH_SHA1_HASH_LEN = 20
};
+#define BFD_EXTRACT_VERSION(x) (((x)&0xe0)>>5)
+#define BFD_EXTRACT_DIAG(x) ((x)&0x1f)
static const struct tok bfd_diag_values[] = {
{ 0, "No Diagnostic" },
{ 0, NULL }
};
-static const struct tok bfd_v0_flag_values[] = {
- { 0x80, "I Hear You" },
- { 0x40, "Demand" },
- { 0x20, "Poll" },
- { 0x10, "Final" },
- { 0x08, "Reserved" },
- { 0x04, "Reserved" },
- { 0x02, "Reserved" },
- { 0x01, "Reserved" },
+static const struct tok bfd_port_values[] = {
+ { BFD_CONTROL_PORT, "Control" },
+ { BFD_MULTIHOP_PORT, "Multihop" },
+ { BFD_LAG_PORT, "LAG" },
+ { SBFD_PORT, "S-BFD" },
{ 0, NULL }
};
#define BFD_FLAG_AUTH 0x04
+static const struct tok bfd_v0_flag_values[] = {
+ { 0x80, "I Hear You" },
+ { 0x40, "Demand" },
+ { 0x20, "Poll" },
+ { 0x10, "Final" },
+ { 0x08, "Control Plane Independent" },
+ { BFD_FLAG_AUTH, "Authentication Present" },
+ { 0x02, "Reserved" },
+ { 0x01, "Reserved" },
+ { 0, NULL }
+};
+
static const struct tok bfd_v1_flag_values[] = {
{ 0x20, "Poll" },
{ 0x10, "Final" },
{ 0x08, "Control Plane Independent" },
{ BFD_FLAG_AUTH, "Authentication Present" },
{ 0x02, "Demand" },
- { 0x01, "Reserved" },
+ { 0x01, "Multipoint" },
{ 0, NULL }
};
{ 0, NULL }
};
-void
-bfd_print(register const u_char *pptr, register u_int len, register u_int port)
+static void
+auth_print(netdissect_options *ndo, const u_char *pptr)
{
- const struct bfd_header_t *bfd_header;
const struct bfd_auth_header_t *bfd_auth_header;
- u_int8_t version = 0;
-
- bfd_header = (const struct bfd_header_t *)pptr;
- if (port == BFD_CONTROL_PORT) {
- TCHECK(*bfd_header);
- version = BFD_EXTRACT_VERSION(bfd_header->version_diag);
- } else if (port == BFD_ECHO_PORT) {
- /* Echo is BFD v1 only */
- version = 1;
+ uint8_t auth_type, auth_len;
+ int i;
+
+ pptr += sizeof (struct bfd_header_t);
+ bfd_auth_header = (const struct bfd_auth_header_t *)pptr;
+ ND_TCHECK_SIZE(bfd_auth_header);
+ auth_type = GET_U_1(bfd_auth_header->auth_type);
+ auth_len = GET_U_1(bfd_auth_header->auth_len);
+ ND_PRINT("\n\tAuthentication: %s (%u), length: %u",
+ tok2str(bfd_v1_authentication_values,"Unknown",auth_type),
+ auth_type, auth_len);
+ pptr += 2;
+ ND_PRINT("\n\t Auth Key ID: %u", GET_U_1(pptr));
+
+ switch(auth_type) {
+ case AUTH_PASSWORD:
+/*
+ * Simple Password Authentication Section Format
+ *
+ * 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
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Auth Type | Auth Len | Auth Key ID | Password... |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | ... |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+ if (auth_len < AUTH_PASSWORD_FIELD_MIN_LEN ||
+ auth_len > AUTH_PASSWORD_FIELD_MAX_LEN) {
+ ND_PRINT("[invalid length %u]",
+ auth_len);
+ break;
+ }
+ pptr++;
+ ND_PRINT(", Password: ");
+ /* the length is equal to the password length plus three */
+ nd_printjn(ndo, pptr, auth_len - 3);
+ break;
+ case AUTH_MD5:
+ case AUTH_MET_MD5:
+/*
+ * Keyed MD5 and Meticulous Keyed MD5 Authentication Section Format
+ *
+ * 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
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Auth Type | Auth Len | Auth Key ID | Reserved |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Sequence Number |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Auth Key/Digest... |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | ... |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+ if (auth_len != AUTH_MD5_FIELD_LEN) {
+ ND_PRINT("[invalid length %u]",
+ auth_len);
+ break;
+ }
+ pptr += 2;
+ ND_PRINT(", Sequence Number: 0x%08x", GET_BE_U_4(pptr));
+ pptr += 4;
+ ND_TCHECK_LEN(pptr, AUTH_MD5_HASH_LEN);
+ ND_PRINT("\n\t Digest: ");
+ for(i = 0; i < AUTH_MD5_HASH_LEN; i++)
+ ND_PRINT("%02x", GET_U_1(pptr + i));
+ break;
+ case AUTH_SHA1:
+ case AUTH_MET_SHA1:
+/*
+ * Keyed SHA1 and Meticulous Keyed SHA1 Authentication Section Format
+ *
+ * 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
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Auth Type | Auth Len | Auth Key ID | Reserved |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Sequence Number |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Auth Key/Hash... |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | ... |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+ if (auth_len != AUTH_SHA1_FIELD_LEN) {
+ ND_PRINT("[invalid length %u]",
+ auth_len);
+ break;
+ }
+ pptr += 2;
+ ND_PRINT(", Sequence Number: 0x%08x", GET_BE_U_4(pptr));
+ pptr += 4;
+ ND_TCHECK_LEN(pptr, AUTH_SHA1_HASH_LEN);
+ ND_PRINT("\n\t Hash: ");
+ for(i = 0; i < AUTH_SHA1_HASH_LEN; i++)
+ ND_PRINT("%02x", GET_U_1(pptr + i));
+ break;
}
- switch ((port << 8) | version) {
+}
- /* BFDv0 */
- case (BFD_CONTROL_PORT << 8):
- if (vflag < 1 )
- {
- printf("BFDv%u, %s, Flags: [%s], length: %u",
- version,
- tok2str(bfd_port_values, "unknown (%u)", port),
- bittok2str(bfd_v0_flag_values, "none", bfd_header->flags),
- len);
- return;
- }
+void
+bfd_print(netdissect_options *ndo, const u_char *pptr,
+ u_int len, u_int port)
+{
+ ndo->ndo_protocol = "bfd";
+ if (port == BFD_CONTROL_PORT ||
+ port == BFD_MULTIHOP_PORT ||
+ port == BFD_LAG_PORT ||
+ port == SBFD_PORT) {
+ /*
+ * Control packet.
+ */
+ const struct bfd_header_t *bfd_header;
+ uint8_t version_diag;
+ uint8_t version = 0;
+ uint8_t flags;
+
+ bfd_header = (const struct bfd_header_t *)pptr;
+ ND_TCHECK_SIZE(bfd_header);
+ version_diag = GET_U_1(bfd_header->version_diag);
+ version = BFD_EXTRACT_VERSION(version_diag);
+ flags = GET_U_1(bfd_header->flags);
+
+ switch (version) {
+
+ /* BFDv0 */
+ case 0:
+ if (ndo->ndo_vflag < 1) {
+ ND_PRINT("BFDv0, Control, Flags: [%s], length: %u",
+ bittok2str(bfd_v0_flag_values, "none", flags),
+ len);
+ return;
+ }
+
+ ND_PRINT("BFDv0, length: %u\n\tControl, Flags: [%s], Diagnostic: %s (0x%02x)",
+ len,
+ bittok2str(bfd_v0_flag_values, "none", flags),
+ tok2str(bfd_diag_values,"unknown",BFD_EXTRACT_DIAG(version_diag)),
+ BFD_EXTRACT_DIAG(version_diag));
+
+ ND_PRINT("\n\tDetection Timer Multiplier: %u (%u ms Detection time), BFD Length: %u",
+ GET_U_1(bfd_header->detect_time_multiplier),
+ GET_U_1(bfd_header->detect_time_multiplier) * GET_BE_U_4(bfd_header->desired_min_tx_interval)/1000,
+ GET_U_1(bfd_header->length));
+
+
+ ND_PRINT("\n\tMy Discriminator: 0x%08x",
+ GET_BE_U_4(bfd_header->my_discriminator));
+ ND_PRINT(", Your Discriminator: 0x%08x",
+ GET_BE_U_4(bfd_header->your_discriminator));
+ ND_PRINT("\n\t Desired min Tx Interval: %4u ms",
+ GET_BE_U_4(bfd_header->desired_min_tx_interval)/1000);
+ ND_PRINT("\n\t Required min Rx Interval: %4u ms",
+ GET_BE_U_4(bfd_header->required_min_rx_interval)/1000);
+ ND_PRINT("\n\t Required min Echo Interval: %4u ms",
+ GET_BE_U_4(bfd_header->required_min_echo_interval)/1000);
+
+ if (flags & BFD_FLAG_AUTH) {
+ auth_print(ndo, pptr);
+ }
+ break;
+
+ /* BFDv1 */
+ case 1:
+ if (ndo->ndo_vflag < 1) {
+ ND_PRINT("BFDv1, %s, State %s, Flags: [%s], length: %u",
+ tok2str(bfd_port_values, "unknown (%u)", port),
+ tok2str(bfd_v1_state_values, "unknown (%u)", (flags & 0xc0) >> 6),
+ bittok2str(bfd_v1_flag_values, "none", flags & 0x3f),
+ len);
+ return;
+ }
- printf("BFDv%u, length: %u\n\t%s, Flags: [%s], Diagnostic: %s (0x%02x)",
- version,
- len,
- tok2str(bfd_port_values, "unknown (%u)", port),
- bittok2str(bfd_v0_flag_values, "none", bfd_header->flags),
- tok2str(bfd_diag_values,"unknown",BFD_EXTRACT_DIAG(bfd_header->version_diag)),
- BFD_EXTRACT_DIAG(bfd_header->version_diag));
-
- printf("\n\tDetection Timer Multiplier: %u (%u ms Detection time), BFD Length: %u",
- bfd_header->detect_time_multiplier,
- bfd_header->detect_time_multiplier * EXTRACT_32BITS(bfd_header->desired_min_tx_interval)/1000,
- bfd_header->length);
-
-
- printf("\n\tMy Discriminator: 0x%08x", EXTRACT_32BITS(bfd_header->my_discriminator));
- printf(", Your Discriminator: 0x%08x", EXTRACT_32BITS(bfd_header->your_discriminator));
- printf("\n\t Desired min Tx Interval: %4u ms", EXTRACT_32BITS(bfd_header->desired_min_tx_interval)/1000);
- printf("\n\t Required min Rx Interval: %4u ms", EXTRACT_32BITS(bfd_header->required_min_rx_interval)/1000);
- printf("\n\t Required min Echo Interval: %4u ms", EXTRACT_32BITS(bfd_header->required_min_echo_interval)/1000);
- break;
-
- /* BFDv1 */
- case (BFD_CONTROL_PORT << 8 | 1):
- if (vflag < 1 )
- {
- printf("BFDv%u, %s, State %s, Flags: [%s], length: %u",
- version,
+ ND_PRINT("BFDv1, length: %u\n\t%s, State %s, Flags: [%s], Diagnostic: %s (0x%02x)",
+ len,
tok2str(bfd_port_values, "unknown (%u)", port),
- tok2str(bfd_v1_state_values, "unknown (%u)", (bfd_header->flags & 0xc0) >> 6),
- bittok2str(bfd_v1_flag_values, "none", bfd_header->flags & 0x3f),
+ tok2str(bfd_v1_state_values, "unknown (%u)", (flags & 0xc0) >> 6),
+ bittok2str(bfd_v1_flag_values, "none", flags & 0x3f),
+ tok2str(bfd_diag_values,"unknown",BFD_EXTRACT_DIAG(version_diag)),
+ BFD_EXTRACT_DIAG(version_diag));
+
+ ND_PRINT("\n\tDetection Timer Multiplier: %u (%u ms Detection time), BFD Length: %u",
+ GET_U_1(bfd_header->detect_time_multiplier),
+ GET_U_1(bfd_header->detect_time_multiplier) * GET_BE_U_4(bfd_header->desired_min_tx_interval)/1000,
+ GET_U_1(bfd_header->length));
+
+
+ ND_PRINT("\n\tMy Discriminator: 0x%08x",
+ GET_BE_U_4(bfd_header->my_discriminator));
+ ND_PRINT(", Your Discriminator: 0x%08x",
+ GET_BE_U_4(bfd_header->your_discriminator));
+ ND_PRINT("\n\t Desired min Tx Interval: %4u ms",
+ GET_BE_U_4(bfd_header->desired_min_tx_interval)/1000);
+ ND_PRINT("\n\t Required min Rx Interval: %4u ms",
+ GET_BE_U_4(bfd_header->required_min_rx_interval)/1000);
+ ND_PRINT("\n\t Required min Echo Interval: %4u ms",
+ GET_BE_U_4(bfd_header->required_min_echo_interval)/1000);
+
+ if (flags & BFD_FLAG_AUTH) {
+ auth_print(ndo, pptr);
+ }
+ break;
+
+ default:
+ ND_PRINT("BFDv%u, Control, length: %u",
+ version,
len);
- return;
- }
-
- printf("BFDv%u, length: %u\n\t%s, State %s, Flags: [%s], Diagnostic: %s (0x%02x)",
- version,
- len,
- tok2str(bfd_port_values, "unknown (%u)", port),
- tok2str(bfd_v1_state_values, "unknown (%u)", (bfd_header->flags & 0xc0) >> 6),
- bittok2str(bfd_v1_flag_values, "none", bfd_header->flags & 0x3f),
- tok2str(bfd_diag_values,"unknown",BFD_EXTRACT_DIAG(bfd_header->version_diag)),
- BFD_EXTRACT_DIAG(bfd_header->version_diag));
-
- printf("\n\tDetection Timer Multiplier: %u (%u ms Detection time), BFD Length: %u",
- bfd_header->detect_time_multiplier,
- bfd_header->detect_time_multiplier * EXTRACT_32BITS(bfd_header->desired_min_tx_interval)/1000,
- bfd_header->length);
-
-
- printf("\n\tMy Discriminator: 0x%08x", EXTRACT_32BITS(bfd_header->my_discriminator));
- printf(", Your Discriminator: 0x%08x", EXTRACT_32BITS(bfd_header->your_discriminator));
- printf("\n\t Desired min Tx Interval: %4u ms", EXTRACT_32BITS(bfd_header->desired_min_tx_interval)/1000);
- printf("\n\t Required min Rx Interval: %4u ms", EXTRACT_32BITS(bfd_header->required_min_rx_interval)/1000);
- printf("\n\t Required min Echo Interval: %4u ms", EXTRACT_32BITS(bfd_header->required_min_echo_interval)/1000);
-
- if (bfd_header->flags & BFD_FLAG_AUTH) {
- pptr += sizeof (const struct bfd_header_t);
- bfd_auth_header = (const struct bfd_auth_header_t *)pptr;
- TCHECK2(*bfd_auth_header, sizeof(const struct bfd_auth_header_t));
- printf("\n\t%s (%u) Authentication, length %u present",
- tok2str(bfd_v1_authentication_values,"Unknown",bfd_auth_header->auth_type),
- bfd_auth_header->auth_type,
- bfd_auth_header->auth_len);
+ if (ndo->ndo_vflag >= 1) {
+ if(!print_unknown_data(ndo, pptr,"\n\t",len))
+ return;
+ }
+ break;
}
- break;
-
- /* BFDv0 */
- case (BFD_ECHO_PORT << 8): /* not yet supported - fall through */
- /* BFDv1 */
- case (BFD_ECHO_PORT << 8 | 1):
-
- default:
- printf("BFD, %s, length: %u",
- tok2str(bfd_port_values, "unknown (%u)", port),
+ } else if (port == BFD_ECHO_PORT) {
+ /*
+ * Echo packet.
+ */
+ ND_PRINT("BFD, Echo, length: %u",
len);
- if (vflag >= 1) {
- if(!print_unknown_data(pptr,"\n\t",len))
+ if (ndo->ndo_vflag >= 1) {
+ if(!print_unknown_data(ndo, pptr,"\n\t",len))
return;
}
- break;
+ } else {
+ /*
+ * Unknown packet type.
+ */
+ ND_PRINT("BFD, unknown (%u), length: %u",
+ port,
+ len);
+ if (ndo->ndo_vflag >= 1) {
+ if(!print_unknown_data(ndo, pptr,"\n\t",len))
+ return;
+ }
}
- return;
-
-trunc:
- printf("[|BFD]");
}
projects / tcpdump / blobdiff