+static const struct tok lsa_opaque_ri_tlv_values[] = {
+ { LS_OPAQUE_RI_TLV_CAP, "Router Capabilities" },
+ { 0, NULL }
+};
+
+static const struct tok lsa_opaque_ri_tlv_cap_values[] = {
+ { 1, "Reserved" },
+ { 2, "Reserved" },
+ { 4, "Reserved" },
+ { 8, "Reserved" },
+ { 16, "graceful restart capable" },
+ { 32, "graceful restart helper" },
+ { 64, "Stub router support" },
+ { 128, "Traffic engineering" },
+ { 256, "p2p over LAN" },
+ { 512, "path computation server" },
+ { 0, NULL }
+};
+
+static const struct tok ospf_lls_tlv_values[] = {
+ { OSPF_LLS_EO, "Extended Options" },
+ { OSPF_LLS_MD5, "MD5 Authentication" },
+ { 0, NULL }
+};
+
+static const struct tok ospf_lls_eo_options[] = {
+ { OSPF_LLS_EO_LR, "LSDB resync" },
+ { OSPF_LLS_EO_RS, "Restart" },
+ { 0, NULL }
+};
+
+int
+ospf_grace_lsa_print(netdissect_options *ndo,
+ const u_char *tptr, u_int ls_length)
+{
+ u_int tlv_type, tlv_length;
+
+
+ while (ls_length > 0) {
+ ND_TCHECK_4(tptr);
+ if (ls_length < 4) {
+ ND_PRINT("\n\t Remaining LS length %u < 4", ls_length);
+ return -1;
+ }
+ tlv_type = GET_BE_U_2(tptr);
+ tlv_length = GET_BE_U_2(tptr + 2);
+ tptr+=4;
+ ls_length-=4;
+
+ ND_PRINT("\n\t %s TLV (%u), length %u, value: ",
+ tok2str(lsa_opaque_grace_tlv_values,"unknown",tlv_type),
+ tlv_type,
+ tlv_length);
+
+ if (tlv_length > ls_length) {
+ ND_PRINT("\n\t Bogus length %u > %u", tlv_length,
+ ls_length);
+ return -1;
+ }
+
+ /* Infinite loop protection. */
+ if (tlv_type == 0 || tlv_length ==0) {
+ return -1;
+ }
+
+ ND_TCHECK_LEN(tptr, tlv_length);
+ switch(tlv_type) {
+
+ case LS_OPAQUE_GRACE_TLV_PERIOD:
+ if (tlv_length != 4) {
+ ND_PRINT("\n\t Bogus length %u != 4", tlv_length);
+ return -1;
+ }
+ ND_PRINT("%us", GET_BE_U_4(tptr));
+ break;
+
+ case LS_OPAQUE_GRACE_TLV_REASON:
+ if (tlv_length != 1) {
+ ND_PRINT("\n\t Bogus length %u != 1", tlv_length);
+ return -1;
+ }
+ ND_PRINT("%s (%u)",
+ tok2str(lsa_opaque_grace_tlv_reason_values, "Unknown", GET_U_1(tptr)),
+ GET_U_1(tptr));
+ break;
+
+ case LS_OPAQUE_GRACE_TLV_INT_ADDRESS:
+ if (tlv_length != 4) {
+ ND_PRINT("\n\t Bogus length %u != 4", tlv_length);
+ return -1;
+ }
+ ND_PRINT("%s", GET_IPADDR_STRING(tptr));
+ break;
+
+ default:
+ if (ndo->ndo_vflag <= 1) {
+ if (!print_unknown_data(ndo, tptr, "\n\t ", tlv_length))
+ return -1;
+ }
+ break;
+
+ }
+ /* in OSPF everything has to be 32-bit aligned, including TLVs */
+ if (tlv_length%4 != 0)
+ tlv_length+=4-(tlv_length%4);
+ ls_length-=tlv_length;
+ tptr+=tlv_length;
+ }
+
+ return 0;
+trunc:
+ return -1;
+}
+
+int
+ospf_te_lsa_print(netdissect_options *ndo,
+ const u_char *tptr, u_int ls_length)
+{
+ u_int tlv_type, tlv_length, subtlv_type, subtlv_length;
+ u_int priority_level, te_class, count_srlg;
+ union { /* int to float conversion buffer for several subTLVs */
+ float f;
+ uint32_t i;
+ } bw;
+
+ while (ls_length != 0) {
+ ND_TCHECK_4(tptr);
+ if (ls_length < 4) {
+ ND_PRINT("\n\t Remaining LS length %u < 4", ls_length);
+ return -1;
+ }
+ tlv_type = GET_BE_U_2(tptr);
+ tlv_length = GET_BE_U_2(tptr + 2);
+ tptr+=4;
+ ls_length-=4;
+
+ ND_PRINT("\n\t %s TLV (%u), length: %u",
+ tok2str(lsa_opaque_te_tlv_values,"unknown",tlv_type),
+ tlv_type,
+ tlv_length);
+
+ if (tlv_length > ls_length) {
+ ND_PRINT("\n\t Bogus length %u > %u", tlv_length,
+ ls_length);
+ return -1;
+ }
+
+ /* Infinite loop protection. */
+ if (tlv_type == 0 || tlv_length ==0) {
+ return -1;
+ }
+
+ switch(tlv_type) {
+ case LS_OPAQUE_TE_TLV_LINK:
+ while (tlv_length != 0) {
+ if (tlv_length < 4) {
+ ND_PRINT("\n\t Remaining TLV length %u < 4",
+ tlv_length);
+ return -1;
+ }
+ subtlv_type = GET_BE_U_2(tptr);
+ subtlv_length = GET_BE_U_2(tptr + 2);
+ tptr+=4;
+ tlv_length-=4;
+
+ /* Infinite loop protection */
+ if (subtlv_type == 0 || subtlv_length == 0)
+ goto invalid;
+
+ ND_PRINT("\n\t %s subTLV (%u), length: %u",
+ tok2str(lsa_opaque_te_link_tlv_subtlv_values,"unknown",subtlv_type),
+ subtlv_type,
+ subtlv_length);
+
+ if (tlv_length < subtlv_length) {
+ ND_PRINT("\n\t Remaining TLV length %u < %u",
+ tlv_length + 4, subtlv_length + 4);
+ return -1;
+ }
+ ND_TCHECK_LEN(tptr, subtlv_length);
+ switch(subtlv_type) {
+ case LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP:
+ if (subtlv_length != 4) {
+ ND_PRINT(" != 4");
+ goto invalid;
+ }
+ ND_PRINT(", 0x%08x", GET_BE_U_4(tptr));
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID:
+ case LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID:
+ if (subtlv_length != 4 && subtlv_length != 8) {
+ ND_PRINT(" != 4 && != 8");
+ goto invalid;
+ }
+ ND_PRINT(", %s (0x%08x)",
+ GET_IPADDR_STRING(tptr),
+ GET_BE_U_4(tptr));
+ if (subtlv_length == 8) /* rfc4203 */
+ ND_PRINT(", %s (0x%08x)",
+ GET_IPADDR_STRING(tptr+4),
+ GET_BE_U_4(tptr + 4));
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP:
+ case LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP:
+ if (subtlv_length != 4) {
+ ND_PRINT(" != 4");
+ goto invalid;
+ }
+ ND_PRINT(", %s", GET_IPADDR_STRING(tptr));
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW:
+ case LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW:
+ if (subtlv_length != 4) {
+ ND_PRINT(" != 4");
+ goto invalid;
+ }
+ bw.i = GET_BE_U_4(tptr);
+ ND_PRINT(", %.3f Mbps", bw.f * 8 / 1000000);
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW:
+ if (subtlv_length != 32) {
+ ND_PRINT(" != 32");
+ goto invalid;
+ }
+ for (te_class = 0; te_class < 8; te_class++) {
+ bw.i = GET_BE_U_4(tptr + te_class * 4);
+ ND_PRINT("\n\t\tTE-Class %u: %.3f Mbps",
+ te_class,
+ bw.f * 8 / 1000000);
+ }
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS:
+ if (subtlv_length < 4) {
+ ND_PRINT(" < 4");
+ goto invalid;
+ }
+ /* BC Model Id (1 octet) + Reserved (3 octets) */
+ ND_PRINT("\n\t\tBandwidth Constraints Model ID: %s (%u)",
+ tok2str(diffserv_te_bc_values, "unknown", GET_U_1(tptr)),
+ GET_U_1(tptr));
+ if (subtlv_length % 4 != 0) {
+ ND_PRINT("\n\t\tlength %u != N x 4", subtlv_length);
+ goto invalid;
+ }
+ if (subtlv_length > 36) {
+ ND_PRINT("\n\t\tlength %u > 36", subtlv_length);
+ goto invalid;
+ }
+ /* decode BCs until the subTLV ends */
+ for (te_class = 0; te_class < (subtlv_length-4)/4; te_class++) {
+ bw.i = GET_BE_U_4(tptr + 4 + te_class * 4);
+ ND_PRINT("\n\t\t Bandwidth constraint CT%u: %.3f Mbps",
+ te_class,
+ bw.f * 8 / 1000000);
+ }
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC:
+ if (subtlv_length != 4) {
+ ND_PRINT(" != 4");
+ goto invalid;
+ }
+ ND_PRINT(", Metric %u", GET_BE_U_4(tptr));
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE:
+ /* Protection Cap (1 octet) + Reserved ((3 octets) */
+ if (subtlv_length != 4) {
+ ND_PRINT(" != 4");
+ goto invalid;
+ }
+ ND_PRINT(", %s",
+ bittok2str(gmpls_link_prot_values, "none", GET_U_1(tptr)));
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR:
+ if (subtlv_length < 36) {
+ ND_PRINT(" < 36");
+ goto invalid;
+ }
+ /* Switching Cap (1 octet) + Encoding (1) + Reserved (2) */
+ ND_PRINT("\n\t\tInterface Switching Capability: %s",
+ tok2str(gmpls_switch_cap_values, "Unknown", GET_U_1((tptr))));
+ ND_PRINT("\n\t\tLSP Encoding: %s\n\t\tMax LSP Bandwidth:",
+ tok2str(gmpls_encoding_values, "Unknown", GET_U_1((tptr + 1))));
+ for (priority_level = 0; priority_level < 8; priority_level++) {
+ bw.i = GET_BE_U_4(tptr + 4 + (priority_level * 4));
+ ND_PRINT("\n\t\t priority level %u: %.3f Mbps",
+ priority_level,
+ bw.f * 8 / 1000000);
+ }
+ break;
+ case LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE:
+ if (subtlv_length != 1) {
+ ND_PRINT(" != 1");
+ goto invalid;
+ }
+ ND_PRINT(", %s (%u)",
+ tok2str(lsa_opaque_te_tlv_link_type_sub_tlv_values,"unknown",GET_U_1(tptr)),
+ GET_U_1(tptr));
+ break;
+
+ case LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP:
+ if (subtlv_length % 4 != 0) {
+ ND_PRINT(" != N x 4");
+ goto invalid;
+ }
+ count_srlg = subtlv_length / 4;
+ if (count_srlg != 0)
+ ND_PRINT("\n\t\t Shared risk group: ");
+ while (count_srlg > 0) {
+ bw.i = GET_BE_U_4(tptr);
+ ND_PRINT("%u", bw.i);
+ tptr+=4;
+ count_srlg--;
+ if (count_srlg > 0)
+ ND_PRINT(", ");
+ }
+ break;
+
+ default:
+ if (ndo->ndo_vflag <= 1) {
+ if (!print_unknown_data(ndo, tptr, "\n\t\t", subtlv_length))
+ return -1;
+ }
+ break;
+ }
+ /* in OSPF everything has to be 32-bit aligned, including subTLVs */
+ if (subtlv_length%4 != 0)
+ subtlv_length+=4-(subtlv_length%4);
+
+ if (tlv_length < subtlv_length) {
+ ND_PRINT("\n\t Remaining TLV length %u < %u",
+ tlv_length + 4, subtlv_length + 4);
+ return -1;
+ }
+ tlv_length-=subtlv_length;
+ tptr+=subtlv_length;
+
+ }
+ break;
projects / tcpdump / blobdiff