#ifndef lint
static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-cfm.c,v 1.2 2006-10-20 18:07:55 hannes Exp $";
+ "@(#) $Header: /tcpdump/master/tcpdump/print-cfm.c,v 1.3 2006-10-29 23:10:07 hannes Exp $";
#endif
#ifdef HAVE_CONFIG_H
#include "extract.h"
#include "ether.h"
#include "addrtoname.h"
+#include "oui.h"
+#include "af.h"
+
+/*
+ * Prototypes
+ */
+const char * cfm_egress_id_string(register const u_char *);
+int cfm_mgmt_addr_print(register const u_char *);
struct cfm_common_header_t {
u_int8_t mdlevel_version;
u_int8_t reserved[3];
};
+static const struct tok cfm_ltm_flag_values[] = {
+ { 0x80, "Use Forwarding-DB only"},
+ { 0, NULL}
+};
+
struct cfm_ltr_t {
u_int8_t transaction_id[4];
u_int8_t last_egress_id[8];
u_int8_t reserved[6];
};
+static const struct tok cfm_ltr_flag_values[] = {
+ { 0x80, "Forwarded"},
+ { 0x40, "Terminal MEP"},
+ { 0, NULL}
+};
+
+static const struct tok cfm_ltr_replay_action_values[] = {
+ { 1, "Exact Match"},
+ { 2, "Filtering DB"},
+ { 3, "MIP CCM DB"},
+ { 0, NULL}
+};
+
+
#define CFM_TLV_END 0
#define CFM_TLV_SENDER_ID 1
#define CFM_TLV_PORT_STATUS 2
{ 0, NULL}
};
+#define CFM_CHASSIS_ID_CHASSIS_COMPONENT 1
+#define CFM_CHASSIS_ID_INTERFACE_ALIAS 2
+#define CFM_CHASSIS_ID_PORT_COMPONENT 3
+#define CFM_CHASSIS_ID_MAC_ADDRESS 4
+#define CFM_CHASSIS_ID_NETWORK_ADDRESS 5
+#define CFM_CHASSIS_ID_INTERFACE_NAME 6
+#define CFM_CHASSIS_ID_LOCAL 7
+
+static const struct tok cfm_tlv_senderid_chassisid_values[] = {
+ { 0, "Reserved"},
+ { CFM_CHASSIS_ID_CHASSIS_COMPONENT, "Chassis component"},
+ { CFM_CHASSIS_ID_INTERFACE_ALIAS, "Interface alias"},
+ { CFM_CHASSIS_ID_PORT_COMPONENT, "Port component"},
+ { CFM_CHASSIS_ID_MAC_ADDRESS, "MAC address"},
+ { CFM_CHASSIS_ID_NETWORK_ADDRESS, "Network address"},
+ { CFM_CHASSIS_ID_INTERFACE_NAME, "Interface name"},
+ { CFM_CHASSIS_ID_LOCAL, "Locally assigned"},
+ { 0, NULL}
+};
+
+
+int
+cfm_mgmt_addr_print(register const u_char *tptr) {
+
+ u_int mgmt_addr_type;
+ u_int hexdump = FALSE;
+
+ /*
+ * Altough AFIs are tpically 2 octects wide,
+ * 802.1ab specifies that this field width
+ * is only once octet
+ */
+ mgmt_addr_type = *tptr;
+ printf("\n\t Management Address Type %s (%u)",
+ tok2str(af_values, "Unknown", mgmt_addr_type),
+ mgmt_addr_type);
+
+ /*
+ * Resolve the passed in Address.
+ */
+ switch(mgmt_addr_type) {
+ case AFNUM_INET:
+ printf(", %s", ipaddr_string(tptr + 1));
+ break;
+
+ case AFNUM_INET6:
+ printf(", %s", ip6addr_string(tptr + 1));
+ break;
+
+ default:
+ hexdump = TRUE;
+ break;
+ }
+
+ return hexdump;
+}
+
+/*
+ * The egress-ID string is a 16-Bit string plus a MAC address.
+ */
+const char *
+cfm_egress_id_string(register const u_char *tptr) {
+ static char egress_id_buffer[80];
+
+ snprintf(egress_id_buffer, sizeof(egress_id_buffer),
+ "MAC %0x4x-%s",
+ EXTRACT_16BITS(tptr),
+ etheraddr_string(tptr+2));
+
+ return egress_id_buffer;
+}
+
void
cfm_print(register const u_char *pptr, register u_int length) {
const struct cfm_common_header_t *cfm_common_header;
const struct cfm_tlv_header_t *cfm_tlv_header;
- const u_int8_t *tptr, *ma_name, *ma_nameformat, *ma_namelength;
- u_int tlen, cfm_tlv_len, cfm_tlv_type, ccm_interval;
+ const u_int8_t *tptr, *tlv_ptr, *ma_name, *ma_nameformat, *ma_namelength;
+ u_int hexdump, tlen, cfm_tlv_len, cfm_tlv_type, ccm_interval;
union {
return;
}
- printf("CFMv%u %s, length %u",
+ printf("CFMv%u %s, MD Level %u, length %u",
CFM_EXTRACT_VERSION(cfm_common_header->mdlevel_version),
tok2str(cfm_opcode_values, "unknown (%u)", cfm_common_header->opcode),
+ CFM_EXTRACT_MD_LEVEL(cfm_common_header->mdlevel_version),
length);
/*
- * In non-verbose mode just lets print the opcode and bail.
+ * In non-verbose mode just print the opcode and md-level.
*/
if (vflag < 1) {
return;
}
- printf("\n\tMD Level %u, First TLV offset %u",
- CFM_EXTRACT_MD_LEVEL(cfm_common_header->mdlevel_version),
- cfm_common_header->first_tlv_offset);
+ printf("\n\tFirst TLV offset %u", cfm_common_header->first_tlv_offset);
tptr += sizeof(const struct cfm_common_header_t);
tlen = length - sizeof(struct cfm_common_header_t);
safeputs(msg_ptr.cfm_ccm->md_name, msg_ptr.cfm_ccm->md_namelength);
break;
+ case CFM_CCM_MD_FORMAT_MAC:
+ printf("\n\t MAC %s", etheraddr_string(
+ msg_ptr.cfm_ccm->md_name));
+ break;
+
/* FIXME add printers for those MD formats - hexdump for now */
case CFM_CCM_MA_FORMAT_8021:
- case CFM_CCM_MD_FORMAT_MAC:
default:
print_unknown_data(msg_ptr.cfm_ccm->md_name, "\n\t ",
msg_ptr.cfm_ccm->md_namelength);
}
break;
+ case CFM_OPCODE_LTM:
+ printf(", Flags [%s]",
+ bittok2str(cfm_ltm_flag_values, "none", cfm_common_header->flags));
+
+ printf("\n\t Transaction-ID 0x%08x, Egress-ID %s, ttl %u",
+ EXTRACT_32BITS(msg_ptr.cfm_ltm->transaction_id),
+ cfm_egress_id_string(msg_ptr.cfm_ltm->egress_id),
+ msg_ptr.cfm_ltm->ttl);
+
+ printf("\n\t Original-MAC %s, Target-MAC %s",
+ etheraddr_string(msg_ptr.cfm_ltm->original_mac),
+ etheraddr_string(msg_ptr.cfm_ltm->target_mac));
+ break;
+
+ case CFM_OPCODE_LTR:
+ printf(", Flags [%s]",
+ bittok2str(cfm_ltr_flag_values, "none", cfm_common_header->flags));
+
+ printf("\n\t Transaction-ID 0x%08x, Last-Egress-ID %s",
+ EXTRACT_32BITS(msg_ptr.cfm_ltr->transaction_id),
+ cfm_egress_id_string(msg_ptr.cfm_ltr->last_egress_id));
+
+ printf("\n\t Next-Egress-ID %s, ttl %u",
+ cfm_egress_id_string(msg_ptr.cfm_ltr->next_egress_id),
+ msg_ptr.cfm_ltr->ttl);
+
+ printf("\n\t Replay-Action %s (%u)",
+ tok2str(cfm_ltr_replay_action_values,
+ "Unknown",
+ msg_ptr.cfm_ltr->replay_action),
+ msg_ptr.cfm_ltr->replay_action);
+ break;
+
/*
* No message decoder yet.
* Hexdump everything up until the start of the TLVs
*/
case CFM_OPCODE_LBR:
case CFM_OPCODE_LBM:
- case CFM_OPCODE_LTR:
- case CFM_OPCODE_LTM:
default:
if (tlen > cfm_common_header->first_tlv_offset) {
print_unknown_data(tptr, "\n\t ",
}
printf("\n\t%s TLV (0x%02x), length %u",
- tok2str(cfm_tlv_values,
- "Unknown",
- cfm_tlv_type),
+ tok2str(cfm_tlv_values, "Unknown", cfm_tlv_type),
cfm_tlv_type,
cfm_tlv_len);
tptr += sizeof(struct cfm_tlv_header_t);
tlen -= sizeof(struct cfm_tlv_header_t);
+ tlv_ptr = tptr;
/* did we capture enough for fully decoding the object ? */
if (cfm_tlv_type != CFM_TLV_END) {
TCHECK2(*tptr, cfm_tlv_len);
}
+ hexdump = FALSE;
switch(cfm_tlv_type) {
case CFM_TLV_END:
/* we are done - bail out */
return;
+
case CFM_TLV_PORT_STATUS:
printf(", Status: %s (%u)",
tok2str(cfm_tlv_port_status_values, "Unknown", *tptr),
*tptr);
break;
+
case CFM_TLV_INTERFACE_STATUS:
printf(", Status: %s (%u)",
tok2str(cfm_tlv_interface_status_values, "Unknown", *tptr),
*tptr);
break;
+ case CFM_TLV_PRIVATE:
+ printf(", Vendor: %s (%u), Sub-Type %u",
+ tok2str(oui_values,"Unknown", EXTRACT_24BITS(tptr)),
+ EXTRACT_24BITS(tptr),
+ *(tptr+3));
+ hexdump = TRUE;
+ break;
+
+ case CFM_TLV_SENDER_ID:
+ {
+ u_int chassis_id_type, chassis_id_length;
+ u_int mgmt_addr_length;
+
+ /*
+ * Check if there is a Chassis-ID.
+ */
+ chassis_id_length = *tptr;
+ if (chassis_id_length > tlen) {
+ hexdump = TRUE;
+ break;
+ }
+
+ tptr++;
+ tlen--;
+
+ if (chassis_id_length) {
+ chassis_id_type = *tptr;
+ printf("\n\t Chassis-ID Type %s (%u), Chassis-ID length %u",
+ tok2str(cfm_tlv_senderid_chassisid_values,
+ "Unknown",
+ chassis_id_type),
+ chassis_id_type,
+ chassis_id_length);
+
+ switch (chassis_id_type) {
+ case CFM_CHASSIS_ID_MAC_ADDRESS:
+ printf("\n\t MAC %s", etheraddr_string(tptr+1));
+ break;
+
+ case CFM_CHASSIS_ID_NETWORK_ADDRESS:
+ hexdump |= cfm_mgmt_addr_print(tptr);
+ break;
+
+ case CFM_CHASSIS_ID_INTERFACE_NAME: /* fall through */
+ case CFM_CHASSIS_ID_INTERFACE_ALIAS:
+ case CFM_CHASSIS_ID_LOCAL:
+ case CFM_CHASSIS_ID_CHASSIS_COMPONENT:
+ case CFM_CHASSIS_ID_PORT_COMPONENT:
+ safeputs(tptr+1, chassis_id_length);
+ break;
+
+ default:
+ hexdump = TRUE;
+ break;
+ }
+ }
+
+ tptr += chassis_id_length;
+ tlen -= chassis_id_length;
+
+ /*
+ * Check if there is a Management Address.
+ */
+ mgmt_addr_length = *tptr;
+ if (mgmt_addr_length > tlen) {
+ hexdump = TRUE;
+ break;
+ }
+
+ tptr++;
+ tlen--;
+
+ if (mgmt_addr_length) {
+ hexdump |= cfm_mgmt_addr_print(tptr);
+ }
+
+ tptr += mgmt_addr_length;
+ tlen -= mgmt_addr_length;
+
+ }
+ break;
+
/*
* FIXME those are the defined TLVs that lack a decoder
* you are welcome to contribute code ;-)
*/
- case CFM_TLV_SENDER_ID:
case CFM_TLV_DATA:
case CFM_TLV_REPLY_INGRESS:
case CFM_TLV_REPLY_EGRESS:
- case CFM_TLV_PRIVATE:
default:
- if (vflag <= 1)
- print_unknown_data(tptr,"\n\t ",cfm_tlv_len);
+ hexdump = TRUE;
break;
}
/* do we want to see an additional hexdump ? */
- if (vflag > 1)
- print_unknown_data(tptr, "\n\t ", cfm_tlv_len);
+ if (hexdump || vflag > 1)
+ print_unknown_data(tlv_ptr, "\n\t ", cfm_tlv_len);
tptr+=cfm_tlv_len;
tlen-=cfm_tlv_len;
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