#ifndef lint
static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-lldp.c,v 1.1 2007-08-03 11:03:19 hannes Exp $";
+"@(#) $Header: /tcpdump/master/tcpdump/print-lldp.c,v 1.2 2007-08-08 14:39:52 hannes Exp $";
#endif
#ifdef HAVE_CONFIG_H
#include "interface.h"
#include "extract.h"
#include "addrtoname.h"
+#include "af.h"
+#include "oui.h"
#define LLDP_EXTRACT_TYPE(x) (((x)&0xfe00)>>9)
#define LLDP_EXTRACT_LEN(x) ((x)&0x01ff)
+/*
+ * TLV type codes
+ */
#define LLDP_END_TLV 0
#define LLDP_CHASSIS_ID_TLV 1
#define LLDP_PORT_ID_TLV 2
#define LLDP_MGMT_ADDR_TLV 8
#define LLDP_PRIVATE_TLV 127
-
static const struct tok lldp_tlv_values[] = {
{ LLDP_END_TLV, "End" },
{ LLDP_CHASSIS_ID_TLV, "Chassis ID" },
{ 0, NULL}
};
-void lldp_print(register const u_char *pptr, register u_int len) {
+/*
+ * Chassis ID subtypes
+ */
+#define LLDP_CHASSIS_CHASSIS_COMP_SUBTYPE 1
+#define LLDP_CHASSIS_INTF_ALIAS_SUBTYPE 2
+#define LLDP_CHASSIS_PORT_COMP_SUBTYPE 3
+#define LLDP_CHASSIS_MAC_ADDR_SUBTYPE 4
+#define LLDP_CHASSIS_NETWORK_ADDR_SUBTYPE 5
+#define LLDP_CHASSIS_INTF_NAME_SUBTYPE 6
+#define LLDP_CHASSIS_LOCAL_SUBTYPE 7
+
+static const struct tok lldp_chassis_subtype_values[] = {
+ { LLDP_CHASSIS_CHASSIS_COMP_SUBTYPE, "Chassis component"},
+ { LLDP_CHASSIS_INTF_ALIAS_SUBTYPE, "Interface alias"},
+ { LLDP_CHASSIS_PORT_COMP_SUBTYPE, "Port component"},
+ { LLDP_CHASSIS_MAC_ADDR_SUBTYPE, "MAC address"},
+ { LLDP_CHASSIS_NETWORK_ADDR_SUBTYPE, "Network address"},
+ { LLDP_CHASSIS_INTF_NAME_SUBTYPE, "Interface name"},
+ { LLDP_CHASSIS_LOCAL_SUBTYPE, "Local"},
+ { 0, NULL}
+};
+
+/*
+ * Port ID subtypes
+ */
+#define LLDP_PORT_INTF_ALIAS_SUBTYPE 1
+#define LLDP_PORT_PORT_COMP_SUBTYPE 2
+#define LLDP_PORT_MAC_ADDR_SUBTYPE 3
+#define LLDP_PORT_NETWORK_ADDR_SUBTYPE 4
+#define LLDP_PORT_INTF_NAME_SUBTYPE 5
+#define LLDP_PORT_AGENT_CIRC_ID_SUBTYPE 6
+#define LLDP_PORT_LOCAL_SUBTYPE 7
+
+static const struct tok lldp_port_subtype_values[] = {
+ { LLDP_PORT_INTF_ALIAS_SUBTYPE, "Interface alias"},
+ { LLDP_PORT_PORT_COMP_SUBTYPE, "Port component"},
+ { LLDP_PORT_MAC_ADDR_SUBTYPE, "MAC address"},
+ { LLDP_PORT_NETWORK_ADDR_SUBTYPE, "Network Address"},
+ { LLDP_PORT_INTF_NAME_SUBTYPE, "Interface Name"},
+ { LLDP_PORT_AGENT_CIRC_ID_SUBTYPE, "Agent circuit ID"},
+ { LLDP_PORT_LOCAL_SUBTYPE, "Local"},
+ { 0, NULL}
+};
+
+/*
+ * System Capabilities
+ */
+#define LLDP_CAP_OTHER 1 << 0
+#define LLDP_CAP_REPEATER 1 << 1
+#define LLDP_CAP_BRIDGE 1 << 2
+#define LLDP_CAP_WLAN_AP 1 << 3
+#define LLDP_CAP_ROUTER 1 << 4
+#define LLDP_CAP_PHONE 1 << 5
+#define LLDP_CAP_DOCSIS 1 << 6
+#define LLDP_CAP_STATION_ONLY 1 << 7
+
+static const struct tok lldp_cap_values[] = {
+ { LLDP_CAP_OTHER, "Other"},
+ { LLDP_CAP_REPEATER, "Repeater"},
+ { LLDP_CAP_BRIDGE, "Bridge"},
+ { LLDP_CAP_WLAN_AP, "WLAN AP"},
+ { LLDP_CAP_ROUTER, "Router"},
+ { LLDP_CAP_PHONE, "Telephone"},
+ { LLDP_CAP_DOCSIS, "Docsis"},
+ { LLDP_CAP_STATION_ONLY, "Station Only"},
+ { 0, NULL}
+};
+
+/*
+ * Interface numbering subtypes.
+ */
+#define LLDP_INTF_NUMB_IFX_SUBTYPE 2
+#define LLDP_INTF_NUMB_SYSPORT_SUBTYPE 3
+
+static const struct tok lldp_intf_numb_subtype_values[] = {
+ { LLDP_INTF_NUMB_IFX_SUBTYPE, "Interface Index" },
+ { LLDP_INTF_NUMB_SYSPORT_SUBTYPE, "System Port Number" },
+ { 0, NULL}
+};
+
+
+static char *
+lldp_network_addr_print(const u_char *tptr) {
+
+ u_int8_t af;
+ static char buf[BUFSIZE];
+ const char * (*pfunc)(const u_char *);
+
+ af = *(tptr);
+ switch (af) {
+ case AFNUM_INET:
+ pfunc = getname;
+ break;
+#ifdef INET6
+ case AFNUM_INET6:
+ pfunc = getname6;
+ break;
+#endif
+ case AFNUM_802:
+ pfunc = etheraddr_string;
+ break;
+ default:
+ pfunc = NULL;
+ break;
+ }
- u_int16_t tlv;
- u_int tlen, hexdump, tlv_type, tlv_len;
+ if (!pfunc) {
+ snprintf(buf, sizeof(buf), "AFI %s (%u) XXX",
+ tok2str(af_values, "Unknown", af), af);
+ } else {
+ snprintf(buf, sizeof(buf), "AFI %s (%u): %s",
+ tok2str(af_values, "Unknown", af), af, (*pfunc)(tptr+1));
+ }
+
+ return buf;
+}
+
+static int
+lldp_mgmt_addr_tlv_print(const u_char *pptr, u_int len) {
+
+ u_int8_t mgmt_addr_len, intf_num_subtype, oid_len;
const u_char *tptr;
+ u_int tlen;
- tptr = pptr;
tlen = len;
+ tptr = pptr;
+
+ mgmt_addr_len = *tptr++;
+ tlen--;
+
+ if (tlen < mgmt_addr_len) {
+ return 0;
+ }
- printf("LLDP, length %u", len);
+ printf("\n\t Management Address length %u, %s",
+ mgmt_addr_len,
+ lldp_network_addr_print(tptr));
+ tptr += mgmt_addr_len;
+ tlen -= mgmt_addr_len;
- if (!vflag) {
- return;
+ if (tlen < 5) {
+ return 0;
+ }
+
+ intf_num_subtype = *tptr;
+ printf("\n\t %s Interface Numbering (%u): %u",
+ tok2str(lldp_intf_numb_subtype_values, "Unknown", intf_num_subtype),
+ intf_num_subtype,
+ EXTRACT_32BITS(tptr+1));
+ tptr += 5;
+ tlen -= 5;
+
+ /*
+ * The OID is optional.
+ */
+ if (tlen) {
+ oid_len = *tptr;
+
+ if (oid_len) {
+ printf("\n\t OID length %u", oid_len);
+ safeputs((const char *)tptr+1, oid_len);
+ }
+ }
+
+ return 1;
+}
+
+void
+lldp_print(register const u_char *pptr, register u_int len) {
+
+ u_int8_t subtype;
+ u_int16_t tlv, cap, ena_cap;
+ u_int oui, tlen, hexdump, tlv_type, tlv_len;
+ const u_char *tptr;
+
+ tptr = pptr;
+ tlen = len;
+
+ if (vflag) {
+ printf("LLDP, length %u", len);
}
while (tlen >= sizeof(tlv)) {
tlen -= sizeof(tlv);
tptr += sizeof(tlv);
- printf("\n\t%s TLV (%u), length %u",
- tok2str(lldp_tlv_values, "Unknown", tlv_type),
- tlv_type, tlv_len);
+ if (vflag) {
+ printf("\n\t%s TLV (%u), length %u",
+ tok2str(lldp_tlv_values, "Unknown", tlv_type),
+ tlv_type, tlv_len);
+ }
/* infinite loop check */
if (!tlv_type || !tlv_len) {
switch (tlv_type) {
case LLDP_TTL_TLV:
- printf(", TTL %us", EXTRACT_16BITS(tptr));
+ if (vflag) {
+ printf(": TTL %us", EXTRACT_16BITS(tptr));
+ }
break;
case LLDP_SYSTEM_NAME_TLV:
+
+ /*
+ * The system name is also print in non-verbose mode
+ * similar to the CDP printer.
+ */
+ if (vflag) {
+ printf(": ");
+ safeputs((const char *)tptr, tlv_len);
+ } else {
+ printf("LLDP, name ");
+ safeputs((const char *)tptr, tlv_len);
+ printf(", length %u", len);
+ }
+ break;
+
case LLDP_PORT_DESCR_TLV:
- printf(", ");
- safeputs((const char *)tptr, tlv_len);
+ if (vflag) {
+ printf(": ");
+ safeputs((const char *)tptr, tlv_len);
+ }
break;
case LLDP_SYSTEM_DESCR_TLV:
- printf("\n\t ");
- safeputs((const char *)tptr, tlv_len);
+ if (vflag) {
+ printf("\n\t ");
+ safeputs((const char *)tptr, tlv_len);
+ }
+ break;
+
+
+ case LLDP_CHASSIS_ID_TLV:
+ if (vflag) {
+ subtype = *tptr;
+ printf("\n\t Subtype %s (%u): ",
+ tok2str(lldp_chassis_subtype_values, "Unknown", subtype),
+ subtype);
+
+ switch (subtype) {
+ case LLDP_CHASSIS_MAC_ADDR_SUBTYPE:
+ printf("%s", etheraddr_string(tptr+1));
+ break;
+
+ case LLDP_CHASSIS_INTF_NAME_SUBTYPE: /* fall through */
+ case LLDP_CHASSIS_LOCAL_SUBTYPE:
+ case LLDP_CHASSIS_CHASSIS_COMP_SUBTYPE:
+ case LLDP_CHASSIS_INTF_ALIAS_SUBTYPE:
+ case LLDP_CHASSIS_PORT_COMP_SUBTYPE:
+ safeputs((const char *)tptr+1, tlv_len-1);
+ break;
+
+ case LLDP_CHASSIS_NETWORK_ADDR_SUBTYPE:
+ printf("%s", lldp_network_addr_print(tptr+1));
+ break;
+
+ default:
+ hexdump = TRUE;
+ break;
+ }
+ }
+ break;
+
+ case LLDP_PORT_ID_TLV:
+ if (vflag) {
+ subtype = *tptr;
+ printf("\n\t Subtype %s (%u): ",
+ tok2str(lldp_port_subtype_values, "Unknown", subtype),
+ subtype);
+
+ switch (subtype) {
+ case LLDP_PORT_MAC_ADDR_SUBTYPE:
+ printf("%s", etheraddr_string(tptr+1));
+ break;
+
+ case LLDP_PORT_INTF_NAME_SUBTYPE: /* fall through */
+ case LLDP_PORT_LOCAL_SUBTYPE:
+ case LLDP_PORT_AGENT_CIRC_ID_SUBTYPE:
+ case LLDP_PORT_INTF_ALIAS_SUBTYPE:
+ case LLDP_PORT_PORT_COMP_SUBTYPE:
+ safeputs((const char *)tptr+1, tlv_len-1);
+ break;
+
+ case LLDP_PORT_NETWORK_ADDR_SUBTYPE:
+ printf("%s", lldp_network_addr_print(tptr+1));
+ break;
+
+ default:
+ hexdump = TRUE;
+ break;
+ }
+ }
+ break;
+
+ case LLDP_PRIVATE_TLV:
+ if (vflag) {
+
+ oui = EXTRACT_24BITS(tptr);
+ printf(": OUI %s (0x%06x)", tok2str(oui_values, "Unknown", oui), oui);
+ hexdump = TRUE;
+ }
+ break;
+
+ case LLDP_SYSTEM_CAP_TLV:
+ if (vflag) {
+ cap = EXTRACT_16BITS(tptr);
+ ena_cap = EXTRACT_16BITS(tptr+2);
+ printf("\n\t System Capabilities [%s] (0x%04x)",
+ bittok2str(lldp_cap_values, "none", cap), cap);
+ printf("\n\t Enabled Capabilities [%s] (0x%04x)",
+ bittok2str(lldp_cap_values, "none", ena_cap), ena_cap);
+ }
+ break;
+
+ case LLDP_MGMT_ADDR_TLV:
+ if (vflag) {
+ if (!lldp_mgmt_addr_tlv_print(tptr, tlen)) {
+ goto trunc;
+ }
+ }
break;
default:
hexdump = TRUE;
+ break;
}
/* do we also want to see a hex dump ? */
- if (vflag > 1 || hexdump) {
+ if (vflag > 1 || (vflag && hexdump)) {
print_unknown_data(tptr,"\n\t ", tlv_len);
}
trunc:
printf("\n\t[|LLDP]");
}
+
+/*
+ * Local Variables:
+ * c-style: whitesmith
+ * c-basic-offset: 4
+ * End:
+ */
projects / tcpdump / commitdiff
