* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
- * support for the IEEE Link Discovery Protocol as per 802.1ab
+ * support for the IEEE Link Discovery Protocol as per 802.1AB
*
*/
#ifndef lint
{ 0, NULL}
};
+/*
+ * DCBX protocol subtypes.
+ */
+#define LLDP_DCBX_SUBTYPE_1 1
+#define LLDP_DCBX_SUBTYPE_2 2
+
+static const struct tok lldp_dcbx_subtype_values[] = {
+ { LLDP_DCBX_SUBTYPE_1, "DCB Capability Exchange Protocol Rev 1" },
+ { LLDP_DCBX_SUBTYPE_2, "DCB Capability Exchange Protocol Rev 1.01" },
+ { 0, NULL}
+};
+
+#define LLDP_DCBX_CONTROL_TLV 1
+#define LLDP_DCBX_PRIORITY_GROUPS_TLV 2
+#define LLDP_DCBX_PRIORITY_FLOW_CONTROL_TLV 3
+#define LLDP_DCBX_APPLICATION_TLV 4
+
/*
* Interface numbering subtypes.
*/
#define LLDP_INTF_NUM_LEN 5
/*
- * Print IEEE private extensions. (802.1 annex F)
+ * Print IEEE 802.1 private extensions. (802.1AB annex E)
*/
static int
-lldp_private_8021_print(const u_char *tptr)
+lldp_private_8021_print(const u_char *tptr, u_int tlv_len)
{
int subtype, hexdump = FALSE;
+ u_int sublen;
+ if (tlv_len < 4) {
+ return hexdump;
+ }
subtype = *(tptr+3);
printf("\n\t %s Subtype (%u)",
switch (subtype) {
case LLDP_PRIVATE_8021_SUBTYPE_PORT_VLAN_ID:
+ if (tlv_len < 6) {
+ return hexdump;
+ }
printf("\n\t port vlan id (PVID): %u",
EXTRACT_16BITS(tptr+4));
break;
case LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_VLAN_ID:
+ if (tlv_len < 7) {
+ return hexdump;
+ }
printf("\n\t port and protocol vlan id (PPVID): %u, flags [%s] (0x%02x)",
EXTRACT_16BITS(tptr+5),
bittok2str(lldp_8021_port_protocol_id_values, "none", *(tptr+4)),
*(tptr+4));
break;
case LLDP_PRIVATE_8021_SUBTYPE_VLAN_NAME:
+ if (tlv_len < 6) {
+ return hexdump;
+ }
printf("\n\t vlan id (VID): %u",
EXTRACT_16BITS(tptr+4));
+ if (tlv_len < 7) {
+ return hexdump;
+ }
+ sublen = *(tptr+6);
+ if (tlv_len < 7+sublen) {
+ return hexdump;
+ }
printf("\n\t vlan name: ");
- safeputs((const char *)tptr+7, *(tptr+6));
+ safeputs((const char *)tptr+7, sublen);
break;
case LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_IDENTITY:
+ if (tlv_len < 5) {
+ return hexdump;
+ }
+ sublen = *(tptr+4);
+ if (tlv_len < 5+sublen) {
+ return hexdump;
+ }
printf("\n\t protocol identity: ");
- safeputs((const char *)tptr+5, *(tptr+4));
+ safeputs((const char *)tptr+5, sublen);
break;
default:
}
/*
- * Print IEEE private extensions. (802.3)
+ * Print IEEE 802.3 private extensions. (802.3bc)
*/
static int
-lldp_private_8023_print(const u_char *tptr)
+lldp_private_8023_print(const u_char *tptr, u_int tlv_len)
{
int subtype, hexdump = FALSE;
+ if (tlv_len < 4) {
+ return hexdump;
+ }
subtype = *(tptr+3);
printf("\n\t %s Subtype (%u)",
switch (subtype) {
case LLDP_PRIVATE_8023_SUBTYPE_MACPHY:
+ if (tlv_len < 9) {
+ return hexdump;
+ }
printf("\n\t autonegotiation [%s] (0x%02x)",
bittok2str(lldp_8023_autonegotiation_values, "none", *(tptr+4)),
*(tptr+4));
break;
case LLDP_PRIVATE_8023_SUBTYPE_MDIPOWER:
+ if (tlv_len < 7) {
+ return hexdump;
+ }
printf("\n\t MDI power support [%s], power pair %s, power class %s",
bittok2str(lldp_mdi_values, "none", *(tptr+4)),
tok2str(lldp_mdi_power_pairs_values, "unknown", *(tptr+5)),
break;
case LLDP_PRIVATE_8023_SUBTYPE_LINKAGGR:
+ if (tlv_len < 9) {
+ return hexdump;
+ }
printf("\n\t aggregation status [%s], aggregation port ID %u",
bittok2str(lldp_aggregation_values, "none", *(tptr+4)),
EXTRACT_32BITS(tptr+5));
int subtype, hexdump = FALSE;
u_int8_t location_format;
u_int16_t power_val;
- u_int8_t lci_len, ca_type, ca_len;
+ u_int lci_len;
+ u_int8_t ca_type, ca_len;
+ if (tlv_len < 4) {
+ return hexdump;
+ }
subtype = *(tptr+3);
printf("\n\t %s Subtype (%u)",
switch (subtype) {
case LLDP_PRIVATE_TIA_SUBTYPE_CAPABILITIES:
+ if (tlv_len < 7) {
+ return hexdump;
+ }
printf("\n\t Media capabilities [%s] (0x%04x)",
bittok2str(lldp_tia_capabilities_values, "none",
EXTRACT_16BITS(tptr+4)), EXTRACT_16BITS(tptr+4));
break;
case LLDP_PRIVATE_TIA_SUBTYPE_NETWORK_POLICY:
+ if (tlv_len < 8) {
+ return hexdump;
+ }
printf("\n\t Application type [%s] (0x%02x)",
tok2str(lldp_tia_application_type_values, "none", *(tptr+4)),
*(tptr+4));
break;
case LLDP_PRIVATE_TIA_SUBTYPE_LOCAL_ID:
+ if (tlv_len < 5) {
+ return hexdump;
+ }
location_format = *(tptr+4);
printf("\n\t Location data format %s (0x%02x)",
tok2str(lldp_tia_location_data_format_values, "unknown", location_format),
switch (location_format) {
case LLDP_TIA_LOCATION_DATA_FORMAT_COORDINATE_BASED:
+ if (tlv_len < 21) {
+ return hexdump;
+ }
printf("\n\t Latitude resolution %u, latitude value %" PRIu64,
(*(tptr+5)>>2), lldp_extract_latlon(tptr+5));
printf("\n\t Longitude resolution %u, longitude value %" PRIu64,
break;
case LLDP_TIA_LOCATION_DATA_FORMAT_CIVIC_ADDRESS:
+ if (tlv_len < 6) {
+ return hexdump;
+ }
lci_len = *(tptr+5);
+ if (lci_len < 3) {
+ return hexdump;
+ }
+ if (tlv_len < 7+lci_len) {
+ return hexdump;
+ }
printf("\n\t LCI length %u, LCI what %s (0x%02x), Country-code ",
lci_len,
tok2str(lldp_tia_location_lci_what_values, "unknown", *(tptr+6)),
/* Decode each civic address element */
while (lci_len > 0) {
+ if (lci_len < 2) {
+ return hexdump;
+ }
ca_type = *(tptr);
ca_len = *(tptr+1);
if ( ca_type == 0 || ca_len == 0) {
return hexdump;
}
+ if (lci_len < ca_len) {
+ return hexdump;
+ }
safeputs((const char *)tptr, ca_len);
tptr += ca_len;
break;
case LLDP_PRIVATE_TIA_SUBTYPE_EXTENDED_POWER_MDI:
+ if (tlv_len < 7) {
+ return hexdump;
+ }
printf("\n\t Power type [%s]",
(*(tptr+4)&0xC0>>6) ? "PD device" : "PSE device");
printf(", Power source [%s]",
return hexdump;
}
+/*
+ * Print DCBX Protocol fields (V 1.01).
+ */
+static int
+lldp_private_dcbx_print(const u_char *pptr, u_int len)
+{
+ int subtype, hexdump = FALSE;
+ u_int8_t tval;
+ u_int16_t tlv;
+ u_int32_t i, pgval, uval;
+ u_int tlen, tlv_type, tlv_len;
+ const u_char *tptr, *mptr;
+
+ if (len < 4) {
+ return hexdump;
+ }
+ subtype = *(pptr+3);
+
+ printf("\n\t %s Subtype (%u)",
+ tok2str(lldp_dcbx_subtype_values, "unknown", subtype),
+ subtype);
+
+ /* by passing old version */
+ if (subtype == LLDP_DCBX_SUBTYPE_1)
+ return TRUE;
+
+ tptr = pptr + 4;
+ tlen = len - 4;
+
+ while (tlen >= sizeof(tlv)) {
+
+ TCHECK2(*tptr, sizeof(tlv));
+
+ tlv = EXTRACT_16BITS(tptr);
+
+ tlv_type = LLDP_EXTRACT_TYPE(tlv);
+ tlv_len = LLDP_EXTRACT_LEN(tlv);
+ hexdump = FALSE;
+
+ tlen -= sizeof(tlv);
+ tptr += sizeof(tlv);
+
+ /* loop check */
+ if (!tlv_type || !tlv_len) {
+ break;
+ }
+
+ TCHECK2(*tptr, tlv_len);
+ if (tlen < tlv_len) {
+ goto trunc;
+ }
+
+ /* decode every tlv */
+ switch (tlv_type) {
+ case LLDP_DCBX_CONTROL_TLV:
+ if (tlv_len < 10) {
+ goto trunc;
+ }
+ printf("\n\t Control - Protocol Control (type 0x%x, length %d)",
+ LLDP_DCBX_CONTROL_TLV, tlv_len);
+ printf("\n\t Oper_Version: %d", *tptr);
+ printf("\n\t Max_Version: %d", *(tptr+1));
+ printf("\n\t Sequence Number: %d", EXTRACT_32BITS(tptr+2));
+ printf("\n\t Acknowledgement Number: %d",
+ EXTRACT_32BITS(tptr+6));
+ break;
+ case LLDP_DCBX_PRIORITY_GROUPS_TLV:
+ if (tlv_len < 17) {
+ goto trunc;
+ }
+ printf("\n\t Feature - Priority Group (type 0x%x, length %d)",
+ LLDP_DCBX_PRIORITY_GROUPS_TLV, tlv_len);
+ printf("\n\t Oper_Version: %d", *tptr);
+ printf("\n\t Max_Version: %d", *(tptr+1));
+ printf("\n\t Info block(0x%02X): ", *(tptr+2));
+ tval = *(tptr+2);
+ printf("Enable bit: %d, Willing bit: %d, Error Bit: %d",
+ (tval & 0x80) ? 1 : 0, (tval & 0x40) ? 1 : 0,
+ (tval & 0x20) ? 1 : 0);
+ printf("\n\t SubType: %d", *(tptr+3));
+ printf("\n\t Priority Allocation");
+
+ pgval = EXTRACT_32BITS(tptr+4);
+ for (i = 0; i <= 7; i++) {
+ tval = *(tptr+4+(i/2));
+ printf("\n\t PgId_%d: %d",
+ i, (pgval >> (28-4*i)) & 0xF);
+ }
+ printf("\n\t Priority Group Allocation");
+ for (i = 0; i <= 7; i++)
+ printf("\n\t Pg percentage[%d]: %d", i, *(tptr+8+i));
+ printf("\n\t NumTCsSupported: %d", *(tptr+8+8));
+ break;
+ case LLDP_DCBX_PRIORITY_FLOW_CONTROL_TLV:
+ if (tlv_len < 6) {
+ goto trunc;
+ }
+ printf("\n\t Feature - Priority Flow Control");
+ printf(" (type 0x%x, length %d)",
+ LLDP_DCBX_PRIORITY_FLOW_CONTROL_TLV, tlv_len);
+ printf("\n\t Oper_Version: %d", *tptr);
+ printf("\n\t Max_Version: %d", *(tptr+1));
+ printf("\n\t Info block(0x%02X): ", *(tptr+2));
+ tval = *(tptr+2);
+ printf("Enable bit: %d, Willing bit: %d, Error Bit: %d",
+ (tval & 0x80) ? 1 : 0, (tval & 0x40) ? 1 : 0,
+ (tval & 0x20) ? 1 : 0);
+ printf("\n\t SubType: %d", *(tptr+3));
+ tval = *(tptr+4);
+ printf("\n\t PFC Config (0x%02X)", *(tptr+4));
+ for (i = 0; i <= 7; i++)
+ printf("\n\t Priority Bit %d: %s",
+ i, (tval & (1 << i)) ? "Enabled" : "Disabled");
+ printf("\n\t NumTCPFCSupported: %d", *(tptr+5));
+ break;
+ case LLDP_DCBX_APPLICATION_TLV:
+ if (tlv_len < 4) {
+ goto trunc;
+ }
+ printf("\n\t Feature - Application (type 0x%x, length %d)",
+ LLDP_DCBX_APPLICATION_TLV, tlv_len);
+ printf("\n\t Oper_Version: %d", *tptr);
+ printf("\n\t Max_Version: %d", *(tptr+1));
+ printf("\n\t Info block(0x%02X): ", *(tptr+2));
+ tval = *(tptr+2);
+ printf("Enable bit: %d, Willing bit: %d, Error Bit: %d",
+ (tval & 0x80) ? 1 : 0, (tval & 0x40) ? 1 : 0,
+ (tval & 0x20) ? 1 : 0);
+ printf("\n\t SubType: %d", *(tptr+3));
+ tval = tlv_len - 4;
+ mptr = tptr + 4;
+ while (tval >= 6) {
+ printf("\n\t Application Value");
+ printf("\n\t Application Protocol ID: 0x%04x",
+ EXTRACT_16BITS(mptr));
+ uval = EXTRACT_24BITS(mptr+2);
+ printf("\n\t SF (0x%x) Application Protocol ID is %s",
+ (uval >> 22),
+ (uval >> 22) ? "Socket Number" : "L2 EtherType");
+ printf("\n\t OUI: 0x%06x", uval & 0x3fffff);
+ printf("\n\t User Priority Map: 0x%02x", *(mptr+5));
+ tval = tval - 6;
+ mptr = mptr + 6;
+ }
+ break;
+ default:
+ hexdump = TRUE;
+ break;
+ }
+
+ /* do we also want to see a hex dump ? */
+ if (vflag > 1 || (vflag && hexdump)) {
+ print_unknown_data(tptr,"\n\t ", tlv_len);
+ }
+
+ tlen -= tlv_len;
+ tptr += tlv_len;
+ }
+
+ trunc:
+ return hexdump;
+}
+
static char *
-lldp_network_addr_print(const u_char *tptr) {
+lldp_network_addr_print(const u_char *tptr, u_int len) {
u_int8_t af;
static char buf[BUFSIZE];
const char * (*pfunc)(const u_char *);
+ if (len < 1)
+ return NULL;
+ len--;
af = *tptr;
switch (af) {
case AFNUM_INET:
+ if (len < 4)
+ return NULL;
pfunc = getname;
break;
#ifdef INET6
case AFNUM_INET6:
+ if (len < 16)
+ return NULL;
pfunc = getname6;
break;
#endif
case AFNUM_802:
+ if (len < 6)
+ return NULL;
pfunc = etheraddr_string;
break;
default:
u_int8_t mgmt_addr_len, intf_num_subtype, oid_len;
const u_char *tptr;
u_int tlen;
+ char *mgmt_addr;
tlen = len;
tptr = pptr;
+ if (tlen < 1) {
+ return 0;
+ }
mgmt_addr_len = *tptr++;
tlen--;
return 0;
}
+ mgmt_addr = lldp_network_addr_print(tptr, mgmt_addr_len);
+ if (mgmt_addr == NULL) {
+ return 0;
+ }
printf("\n\t Management Address length %u, %s",
- mgmt_addr_len,
- lldp_network_addr_print(tptr));
+ mgmt_addr_len, mgmt_addr);
tptr += mgmt_addr_len;
tlen -= mgmt_addr_len;
if (tlen) {
oid_len = *tptr;
+ if (tlen < oid_len) {
+ return 0;
+ }
if (oid_len) {
printf("\n\t OID length %u", oid_len);
safeputs((const char *)tptr+1, oid_len);
u_int16_t tlv, cap, ena_cap;
u_int oui, tlen, hexdump, tlv_type, tlv_len;
const u_char *tptr;
+ char *network_addr;
tptr = pptr;
tlen = len;
}
TCHECK2(*tptr, tlv_len);
+ if (tlen < tlv_len) {
+ goto trunc;
+ }
switch (tlv_type) {
- case LLDP_TTL_TLV:
- 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:
- if (vflag) {
- printf(": ");
- safeputs((const char *)tptr, tlv_len);
- }
- break;
-
- case LLDP_SYSTEM_DESCR_TLV:
- if (vflag) {
- printf("\n\t ");
- safeputs((const char *)tptr, tlv_len);
- }
- break;
-
case LLDP_CHASSIS_ID_TLV:
if (vflag) {
+ if (tlv_len < 2) {
+ goto trunc;
+ }
subtype = *tptr;
printf("\n\t Subtype %s (%u): ",
tok2str(lldp_chassis_subtype_values, "Unknown", subtype),
switch (subtype) {
case LLDP_CHASSIS_MAC_ADDR_SUBTYPE:
+ if (tlv_len < 1+6) {
+ goto trunc;
+ }
printf("%s", etheraddr_string(tptr+1));
break;
break;
case LLDP_CHASSIS_NETWORK_ADDR_SUBTYPE:
- printf("%s", lldp_network_addr_print(tptr+1));
+ network_addr = lldp_network_addr_print(tptr+1, tlv_len-1);
+ if (network_addr == NULL) {
+ goto trunc;
+ }
+ printf("%s", network_addr);
break;
default:
case LLDP_PORT_ID_TLV:
if (vflag) {
+ if (tlv_len < 2) {
+ goto trunc;
+ }
subtype = *tptr;
printf("\n\t Subtype %s (%u): ",
tok2str(lldp_port_subtype_values, "Unknown", subtype),
switch (subtype) {
case LLDP_PORT_MAC_ADDR_SUBTYPE:
+ if (tlv_len < 1+6) {
+ goto trunc;
+ }
printf("%s", etheraddr_string(tptr+1));
break;
break;
case LLDP_PORT_NETWORK_ADDR_SUBTYPE:
- printf("%s", lldp_network_addr_print(tptr+1));
+ network_addr = lldp_network_addr_print(tptr+1, tlv_len-1);
+ if (network_addr == NULL) {
+ goto trunc;
+ }
+ printf("%s", network_addr);
break;
default:
}
break;
- case LLDP_PRIVATE_TLV:
+ case LLDP_TTL_TLV:
if (vflag) {
- oui = EXTRACT_24BITS(tptr);
- printf(": OUI %s (0x%06x)", tok2str(oui_values, "Unknown", oui), oui);
-
- switch (oui) {
- case OUI_IEEE_8021_PRIVATE:
- hexdump = lldp_private_8021_print(tptr);
- break;
- case OUI_IEEE_8023_PRIVATE:
- hexdump = lldp_private_8023_print(tptr);
- break;
- case OUI_TIA:
- hexdump = lldp_private_tia_print(tptr, tlv_len);
- break;
- default:
- hexdump = TRUE;
- break;
+ if (tlv_len < 2) {
+ goto trunc;
}
+ printf(": TTL %us", EXTRACT_16BITS(tptr));
+ }
+ break;
+
+ case LLDP_PORT_DESCR_TLV:
+ if (vflag) {
+ printf(": ");
+ safeputs((const char *)tptr, tlv_len);
+ }
+ 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_SYSTEM_DESCR_TLV:
+ if (vflag) {
+ printf("\n\t ");
+ safeputs((const char *)tptr, tlv_len);
}
break;
case LLDP_SYSTEM_CAP_TLV:
if (vflag) {
+ /*
+ * XXX - IEEE Std 802.1AB-2009 says the first octet
+ * if a chassis ID subtype, with the system
+ * capabilities and enabled capabilities following
+ * it.
+ */
+ if (tlv_len < 4) {
+ goto trunc;
+ }
cap = EXTRACT_16BITS(tptr);
ena_cap = EXTRACT_16BITS(tptr+2);
printf("\n\t System Capabilities [%s] (0x%04x)",
case LLDP_MGMT_ADDR_TLV:
if (vflag) {
- if (!lldp_mgmt_addr_tlv_print(tptr, tlen)) {
+ if (!lldp_mgmt_addr_tlv_print(tptr, tlv_len)) {
+ goto trunc;
+ }
+ }
+ break;
+
+ case LLDP_PRIVATE_TLV:
+ if (vflag) {
+ if (tlv_len < 3) {
goto trunc;
}
+ oui = EXTRACT_24BITS(tptr);
+ printf(": OUI %s (0x%06x)", tok2str(oui_values, "Unknown", oui), oui);
+
+ switch (oui) {
+ case OUI_IEEE_8021_PRIVATE:
+ hexdump = lldp_private_8021_print(tptr, tlv_len);
+ break;
+ case OUI_IEEE_8023_PRIVATE:
+ hexdump = lldp_private_8023_print(tptr, tlv_len);
+ break;
+ case OUI_TIA:
+ hexdump = lldp_private_tia_print(tptr, tlv_len);
+ break;
+ case OUI_DCBX:
+ hexdump = lldp_private_dcbx_print(tptr, tlv_len);
+ break;
+ default:
+ hexdump = TRUE;
+ break;
+ }
}
break;
projects / tcpdump / blobdiff