| /* |
| * Copyright (c) 1998-2006 The TCPDUMP project |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that: (1) source code |
| * distributions retain the above copyright notice and this paragraph |
| * in its entirety, and (2) distributions including binary code include |
| * the above copyright notice and this paragraph in its entirety in |
| * the documentation or other materials provided with the distribution. |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND |
| * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT |
| * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE. |
| * |
| * support for the IEEE "slow protocols" LACP, MARKER as per 802.3ad |
| * OAM as per 802.3ah |
| * |
| * Original code by Hannes Gredler ([email protected]) |
| */ |
| |
| /* \summary: IEEE "slow protocols" (802.3ad/802.3ah) printer */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <netdissect-stdinc.h> |
| |
| #include "netdissect.h" |
| #include "extract.h" |
| #include "addrtoname.h" |
| #include "oui.h" |
| |
| #define SLOW_PROTO_LACP 1 |
| #define SLOW_PROTO_MARKER 2 |
| #define SLOW_PROTO_OAM 3 |
| |
| #define LACP_VERSION 1 |
| #define MARKER_VERSION 1 |
| |
| static const struct tok slow_proto_values[] = { |
| { SLOW_PROTO_LACP, "LACP" }, |
| { SLOW_PROTO_MARKER, "MARKER" }, |
| { SLOW_PROTO_OAM, "OAM" }, |
| { 0, NULL} |
| }; |
| |
| static const struct tok slow_oam_flag_values[] = { |
| { 0x0001, "Link Fault" }, |
| { 0x0002, "Dying Gasp" }, |
| { 0x0004, "Critical Event" }, |
| { 0x0008, "Local Evaluating" }, |
| { 0x0010, "Local Stable" }, |
| { 0x0020, "Remote Evaluating" }, |
| { 0x0040, "Remote Stable" }, |
| { 0, NULL} |
| }; |
| |
| #define SLOW_OAM_CODE_INFO 0x00 |
| #define SLOW_OAM_CODE_EVENT_NOTIF 0x01 |
| #define SLOW_OAM_CODE_VAR_REQUEST 0x02 |
| #define SLOW_OAM_CODE_VAR_RESPONSE 0x03 |
| #define SLOW_OAM_CODE_LOOPBACK_CTRL 0x04 |
| #define SLOW_OAM_CODE_PRIVATE 0xfe |
| |
| static const struct tok slow_oam_code_values[] = { |
| { SLOW_OAM_CODE_INFO, "Information" }, |
| { SLOW_OAM_CODE_EVENT_NOTIF, "Event Notification" }, |
| { SLOW_OAM_CODE_VAR_REQUEST, "Variable Request" }, |
| { SLOW_OAM_CODE_VAR_RESPONSE, "Variable Response" }, |
| { SLOW_OAM_CODE_LOOPBACK_CTRL, "Loopback Control" }, |
| { SLOW_OAM_CODE_PRIVATE, "Vendor Private" }, |
| { 0, NULL} |
| }; |
| |
| struct slow_oam_info_t { |
| nd_uint8_t info_type; |
| nd_uint8_t info_length; |
| nd_uint8_t oam_version; |
| nd_uint16_t revision; |
| nd_uint8_t state; |
| nd_uint8_t oam_config; |
| nd_uint16_t oam_pdu_config; |
| nd_uint24_t oui; |
| nd_uint32_t vendor_private; |
| }; |
| |
| #define SLOW_OAM_INFO_TYPE_END_OF_TLV 0x00 |
| #define SLOW_OAM_INFO_TYPE_LOCAL 0x01 |
| #define SLOW_OAM_INFO_TYPE_REMOTE 0x02 |
| #define SLOW_OAM_INFO_TYPE_ORG_SPECIFIC 0xfe |
| |
| static const struct tok slow_oam_info_type_values[] = { |
| { SLOW_OAM_INFO_TYPE_END_OF_TLV, "End of TLV marker" }, |
| { SLOW_OAM_INFO_TYPE_LOCAL, "Local" }, |
| { SLOW_OAM_INFO_TYPE_REMOTE, "Remote" }, |
| { SLOW_OAM_INFO_TYPE_ORG_SPECIFIC, "Organization specific" }, |
| { 0, NULL} |
| }; |
| |
| #define OAM_INFO_TYPE_PARSER_MASK 0x3 |
| static const struct tok slow_oam_info_type_state_parser_values[] = { |
| { 0x00, "forwarding" }, |
| { 0x01, "looping back" }, |
| { 0x02, "discarding" }, |
| { 0x03, "reserved" }, |
| { 0, NULL} |
| }; |
| |
| #define OAM_INFO_TYPE_MUX_MASK 0x4 |
| static const struct tok slow_oam_info_type_state_mux_values[] = { |
| { 0x00, "forwarding" }, |
| { 0x04, "discarding" }, |
| { 0, NULL} |
| }; |
| |
| static const struct tok slow_oam_info_type_oam_config_values[] = { |
| { 0x01, "Active" }, |
| { 0x02, "Unidirectional" }, |
| { 0x04, "Remote-Loopback" }, |
| { 0x08, "Link-Events" }, |
| { 0x10, "Variable-Retrieval" }, |
| { 0, NULL} |
| }; |
| |
| /* 11 Bits */ |
| #define OAM_INFO_TYPE_PDU_SIZE_MASK 0x7ff |
| |
| #define SLOW_OAM_LINK_EVENT_END_OF_TLV 0x00 |
| #define SLOW_OAM_LINK_EVENT_ERR_SYM_PER 0x01 |
| #define SLOW_OAM_LINK_EVENT_ERR_FRM 0x02 |
| #define SLOW_OAM_LINK_EVENT_ERR_FRM_PER 0x03 |
| #define SLOW_OAM_LINK_EVENT_ERR_FRM_SUMM 0x04 |
| #define SLOW_OAM_LINK_EVENT_ORG_SPECIFIC 0xfe |
| |
| static const struct tok slow_oam_link_event_values[] = { |
| { SLOW_OAM_LINK_EVENT_END_OF_TLV, "End of TLV marker" }, |
| { SLOW_OAM_LINK_EVENT_ERR_SYM_PER, "Errored Symbol Period Event" }, |
| { SLOW_OAM_LINK_EVENT_ERR_FRM, "Errored Frame Event" }, |
| { SLOW_OAM_LINK_EVENT_ERR_FRM_PER, "Errored Frame Period Event" }, |
| { SLOW_OAM_LINK_EVENT_ERR_FRM_SUMM, "Errored Frame Seconds Summary Event" }, |
| { SLOW_OAM_LINK_EVENT_ORG_SPECIFIC, "Organization specific" }, |
| { 0, NULL} |
| }; |
| |
| struct slow_oam_link_event_t { |
| nd_uint8_t event_type; |
| nd_uint8_t event_length; |
| nd_uint16_t time_stamp; |
| nd_uint64_t window; |
| nd_uint64_t threshold; |
| nd_uint64_t errors; |
| nd_uint64_t errors_running_total; |
| nd_uint32_t event_running_total; |
| }; |
| |
| struct slow_oam_variablerequest_t { |
| nd_uint8_t branch; |
| nd_uint16_t leaf; |
| }; |
| |
| struct slow_oam_variableresponse_t { |
| nd_uint8_t branch; |
| nd_uint16_t leaf; |
| nd_uint8_t length; |
| }; |
| |
| struct slow_oam_loopbackctrl_t { |
| nd_uint8_t command; |
| }; |
| |
| static const struct tok slow_oam_loopbackctrl_cmd_values[] = { |
| { 0x01, "Enable OAM Remote Loopback" }, |
| { 0x02, "Disable OAM Remote Loopback" }, |
| { 0, NULL} |
| }; |
| |
| struct tlv_header_t { |
| uint8_t type; |
| uint8_t length; |
| }; |
| |
| #define LACP_MARKER_TLV_TERMINATOR 0x00 /* same code for LACP and Marker */ |
| |
| #define LACP_TLV_ACTOR_INFO 0x01 |
| #define LACP_TLV_PARTNER_INFO 0x02 |
| #define LACP_TLV_COLLECTOR_INFO 0x03 |
| |
| #define MARKER_TLV_MARKER_INFO 0x01 |
| |
| static const struct tok slow_tlv_values[] = { |
| { (SLOW_PROTO_LACP << 8) + LACP_MARKER_TLV_TERMINATOR, "Terminator"}, |
| { (SLOW_PROTO_LACP << 8) + LACP_TLV_ACTOR_INFO, "Actor Information"}, |
| { (SLOW_PROTO_LACP << 8) + LACP_TLV_PARTNER_INFO, "Partner Information"}, |
| { (SLOW_PROTO_LACP << 8) + LACP_TLV_COLLECTOR_INFO, "Collector Information"}, |
| |
| { (SLOW_PROTO_MARKER << 8) + LACP_MARKER_TLV_TERMINATOR, "Terminator"}, |
| { (SLOW_PROTO_MARKER << 8) + MARKER_TLV_MARKER_INFO, "Marker Information"}, |
| { 0, NULL} |
| }; |
| |
| struct lacp_tlv_actor_partner_info_t { |
| nd_uint16_t sys_pri; |
| nd_mac_addr sys; |
| nd_uint16_t key; |
| nd_uint16_t port_pri; |
| nd_uint16_t port; |
| nd_uint8_t state; |
| uint8_t pad[3]; |
| }; |
| |
| static const struct tok lacp_tlv_actor_partner_info_state_values[] = { |
| { 0x01, "Activity"}, |
| { 0x02, "Timeout"}, |
| { 0x04, "Aggregation"}, |
| { 0x08, "Synchronization"}, |
| { 0x10, "Collecting"}, |
| { 0x20, "Distributing"}, |
| { 0x40, "Default"}, |
| { 0x80, "Expired"}, |
| { 0, NULL} |
| }; |
| |
| struct lacp_tlv_collector_info_t { |
| nd_uint16_t max_delay; |
| uint8_t pad[12]; |
| }; |
| |
| struct marker_tlv_marker_info_t { |
| nd_uint16_t req_port; |
| nd_mac_addr req_sys; |
| nd_uint32_t req_trans_id; |
| uint8_t pad[2]; |
| }; |
| |
| struct lacp_marker_tlv_terminator_t { |
| uint8_t pad[50]; |
| }; |
| |
| static void slow_marker_lacp_print(netdissect_options *, const u_char *, u_int, u_int); |
| static void slow_oam_print(netdissect_options *, const u_char *, u_int); |
| |
| void |
| slow_print(netdissect_options *ndo, |
| const u_char *pptr, u_int len) |
| { |
| int print_version; |
| u_int subtype; |
| |
| if (len < 1) |
| goto tooshort; |
| ND_TCHECK_1(pptr); |
| subtype = EXTRACT_U_1(pptr); |
| |
| /* |
| * Sanity checking of the header. |
| */ |
| switch (subtype) { |
| case SLOW_PROTO_LACP: |
| if (len < 2) |
| goto tooshort; |
| ND_TCHECK_1(pptr + 1); |
| if (EXTRACT_U_1(pptr + 1) != LACP_VERSION) { |
| ND_PRINT((ndo, "LACP version %u packet not supported", EXTRACT_U_1(pptr + 1))); |
| return; |
| } |
| print_version = 1; |
| break; |
| |
| case SLOW_PROTO_MARKER: |
| if (len < 2) |
| goto tooshort; |
| ND_TCHECK_1(pptr + 1); |
| if (EXTRACT_U_1(pptr + 1) != MARKER_VERSION) { |
| ND_PRINT((ndo, "MARKER version %u packet not supported", EXTRACT_U_1(pptr + 1))); |
| return; |
| } |
| print_version = 1; |
| break; |
| |
| case SLOW_PROTO_OAM: /* fall through */ |
| print_version = 0; |
| break; |
| |
| default: |
| /* print basic information and exit */ |
| print_version = -1; |
| break; |
| } |
| |
| if (print_version == 1) { |
| ND_PRINT((ndo, "%sv%u, length %u", |
| tok2str(slow_proto_values, "unknown (%u)", subtype), |
| EXTRACT_U_1((pptr + 1)), |
| len)); |
| } else { |
| /* some slow protos don't have a version number in the header */ |
| ND_PRINT((ndo, "%s, length %u", |
| tok2str(slow_proto_values, "unknown (%u)", subtype), |
| len)); |
| } |
| |
| /* unrecognized subtype */ |
| if (print_version == -1) { |
| print_unknown_data(ndo, pptr, "\n\t", len); |
| return; |
| } |
| |
| if (!ndo->ndo_vflag) |
| return; |
| |
| switch (subtype) { |
| default: /* should not happen */ |
| break; |
| |
| case SLOW_PROTO_OAM: |
| /* skip subtype */ |
| len -= 1; |
| pptr += 1; |
| slow_oam_print(ndo, pptr, len); |
| break; |
| |
| case SLOW_PROTO_LACP: /* LACP and MARKER share the same semantics */ |
| case SLOW_PROTO_MARKER: |
| /* skip subtype and version */ |
| len -= 2; |
| pptr += 2; |
| slow_marker_lacp_print(ndo, pptr, len, subtype); |
| break; |
| } |
| return; |
| |
| tooshort: |
| if (!ndo->ndo_vflag) |
| ND_PRINT((ndo, " (packet is too short)")); |
| else |
| ND_PRINT((ndo, "\n\t\t packet is too short")); |
| return; |
| |
| trunc: |
| if (!ndo->ndo_vflag) |
| ND_PRINT((ndo, " (packet exceeded snapshot)")); |
| else |
| ND_PRINT((ndo, "\n\t\t packet exceeded snapshot")); |
| } |
| |
| static void |
| slow_marker_lacp_print(netdissect_options *ndo, |
| const u_char *tptr, u_int tlen, |
| u_int proto_subtype) |
| { |
| const struct tlv_header_t *tlv_header; |
| const u_char *tlv_tptr; |
| u_int tlv_len, tlv_tlen; |
| |
| union { |
| const struct lacp_marker_tlv_terminator_t *lacp_marker_tlv_terminator; |
| const struct lacp_tlv_actor_partner_info_t *lacp_tlv_actor_partner_info; |
| const struct lacp_tlv_collector_info_t *lacp_tlv_collector_info; |
| const struct marker_tlv_marker_info_t *marker_tlv_marker_info; |
| } tlv_ptr; |
| |
| while(tlen>0) { |
| /* is the packet big enough to include the tlv header ? */ |
| if (tlen < sizeof(struct tlv_header_t)) |
| goto tooshort; |
| /* did we capture enough for fully decoding the tlv header ? */ |
| ND_TCHECK_LEN(tptr, sizeof(struct tlv_header_t)); |
| tlv_header = (const struct tlv_header_t *)tptr; |
| tlv_len = tlv_header->length; |
| |
| ND_PRINT((ndo, "\n\t%s TLV (0x%02x), length %u", |
| tok2str(slow_tlv_values, |
| "Unknown", |
| (proto_subtype << 8) + tlv_header->type), |
| tlv_header->type, |
| tlv_len)); |
| |
| if (tlv_header->type == LACP_MARKER_TLV_TERMINATOR) { |
| /* |
| * This TLV has a length of zero, and means there are no |
| * more TLVs to process. |
| */ |
| return; |
| } |
| |
| /* length includes the type and length fields */ |
| if (tlv_len < sizeof(struct tlv_header_t)) { |
| ND_PRINT((ndo, "\n\t ERROR: illegal length - should be >= %lu", |
| (unsigned long) sizeof(struct tlv_header_t))); |
| return; |
| } |
| |
| /* is the packet big enough to include the tlv ? */ |
| if (tlen < tlv_len) |
| goto tooshort; |
| /* did we capture enough for fully decoding the tlv ? */ |
| ND_TCHECK_LEN(tptr, tlv_len); |
| |
| tlv_tptr=tptr+sizeof(struct tlv_header_t); |
| tlv_tlen=tlv_len-sizeof(struct tlv_header_t); |
| |
| switch((proto_subtype << 8) + tlv_header->type) { |
| |
| /* those two TLVs have the same structure -> fall through */ |
| case ((SLOW_PROTO_LACP << 8) + LACP_TLV_ACTOR_INFO): |
| case ((SLOW_PROTO_LACP << 8) + LACP_TLV_PARTNER_INFO): |
| if (tlv_tlen != |
| sizeof(struct lacp_tlv_actor_partner_info_t)) { |
| ND_PRINT((ndo, "\n\t ERROR: illegal length - should be %lu", |
| (unsigned long) (sizeof(struct tlv_header_t) + sizeof(struct lacp_tlv_actor_partner_info_t)))); |
| goto badlength; |
| } |
| |
| tlv_ptr.lacp_tlv_actor_partner_info = (const struct lacp_tlv_actor_partner_info_t *)tlv_tptr; |
| |
| ND_PRINT((ndo, "\n\t System %s, System Priority %u, Key %u" \ |
| ", Port %u, Port Priority %u\n\t State Flags [%s]", |
| etheraddr_string(ndo, tlv_ptr.lacp_tlv_actor_partner_info->sys), |
| EXTRACT_BE_U_2(tlv_ptr.lacp_tlv_actor_partner_info->sys_pri), |
| EXTRACT_BE_U_2(tlv_ptr.lacp_tlv_actor_partner_info->key), |
| EXTRACT_BE_U_2(tlv_ptr.lacp_tlv_actor_partner_info->port), |
| EXTRACT_BE_U_2(tlv_ptr.lacp_tlv_actor_partner_info->port_pri), |
| bittok2str(lacp_tlv_actor_partner_info_state_values, |
| "none", |
| EXTRACT_U_1(tlv_ptr.lacp_tlv_actor_partner_info->state)))); |
| |
| break; |
| |
| case ((SLOW_PROTO_LACP << 8) + LACP_TLV_COLLECTOR_INFO): |
| if (tlv_tlen != |
| sizeof(struct lacp_tlv_collector_info_t)) { |
| ND_PRINT((ndo, "\n\t ERROR: illegal length - should be %lu", |
| (unsigned long) (sizeof(struct tlv_header_t) + sizeof(struct lacp_tlv_collector_info_t)))); |
| goto badlength; |
| } |
| |
| tlv_ptr.lacp_tlv_collector_info = (const struct lacp_tlv_collector_info_t *)tlv_tptr; |
| |
| ND_PRINT((ndo, "\n\t Max Delay %u", |
| EXTRACT_BE_U_2(tlv_ptr.lacp_tlv_collector_info->max_delay))); |
| |
| break; |
| |
| case ((SLOW_PROTO_MARKER << 8) + MARKER_TLV_MARKER_INFO): |
| if (tlv_tlen != |
| sizeof(struct marker_tlv_marker_info_t)) { |
| ND_PRINT((ndo, "\n\t ERROR: illegal length - should be %lu", |
| (unsigned long) (sizeof(struct tlv_header_t) + sizeof(struct marker_tlv_marker_info_t)))); |
| goto badlength; |
| } |
| |
| tlv_ptr.marker_tlv_marker_info = (const struct marker_tlv_marker_info_t *)tlv_tptr; |
| |
| ND_PRINT((ndo, "\n\t Request System %s, Request Port %u, Request Transaction ID 0x%08x", |
| etheraddr_string(ndo, tlv_ptr.marker_tlv_marker_info->req_sys), |
| EXTRACT_BE_U_2(tlv_ptr.marker_tlv_marker_info->req_port), |
| EXTRACT_BE_U_4(tlv_ptr.marker_tlv_marker_info->req_trans_id))); |
| |
| break; |
| |
| default: |
| if (ndo->ndo_vflag <= 1) |
| print_unknown_data(ndo, tlv_tptr, "\n\t ", tlv_tlen); |
| break; |
| } |
| |
| badlength: |
| /* do we want to see an additional hexdump ? */ |
| if (ndo->ndo_vflag > 1) { |
| print_unknown_data(ndo, tptr+sizeof(struct tlv_header_t), "\n\t ", |
| tlv_len-sizeof(struct tlv_header_t)); |
| } |
| |
| tptr+=tlv_len; |
| tlen-=tlv_len; |
| } |
| return; |
| |
| tooshort: |
| ND_PRINT((ndo, "\n\t\t packet is too short")); |
| return; |
| |
| trunc: |
| ND_PRINT((ndo, "\n\t\t packet exceeded snapshot")); |
| } |
| |
| static void |
| slow_oam_print(netdissect_options *ndo, |
| const u_char *tptr, u_int tlen) |
| { |
| uint8_t code; |
| uint8_t type, length; |
| uint8_t state; |
| uint8_t command; |
| u_int hexdump; |
| |
| struct slow_oam_common_header_t { |
| nd_uint16_t flags; |
| nd_uint8_t code; |
| }; |
| |
| struct slow_oam_tlv_header_t { |
| nd_uint8_t type; |
| nd_uint8_t length; |
| }; |
| |
| union { |
| const struct slow_oam_common_header_t *slow_oam_common_header; |
| const struct slow_oam_tlv_header_t *slow_oam_tlv_header; |
| } ptr; |
| |
| union { |
| const struct slow_oam_info_t *slow_oam_info; |
| const struct slow_oam_link_event_t *slow_oam_link_event; |
| const struct slow_oam_variablerequest_t *slow_oam_variablerequest; |
| const struct slow_oam_variableresponse_t *slow_oam_variableresponse; |
| const struct slow_oam_loopbackctrl_t *slow_oam_loopbackctrl; |
| } tlv; |
| |
| ptr.slow_oam_common_header = (const struct slow_oam_common_header_t *)tptr; |
| if (tlen < sizeof(*ptr.slow_oam_common_header)) |
| goto tooshort; |
| ND_TCHECK(*ptr.slow_oam_common_header); |
| tptr += sizeof(struct slow_oam_common_header_t); |
| tlen -= sizeof(struct slow_oam_common_header_t); |
| |
| code = EXTRACT_U_1(ptr.slow_oam_common_header->code); |
| ND_PRINT((ndo, "\n\tCode %s OAM PDU, Flags [%s]", |
| tok2str(slow_oam_code_values, "Unknown (%u)", code), |
| bittok2str(slow_oam_flag_values, |
| "none", |
| EXTRACT_BE_U_2(ptr.slow_oam_common_header->flags)))); |
| |
| switch (code) { |
| case SLOW_OAM_CODE_INFO: |
| while (tlen > 0) { |
| ptr.slow_oam_tlv_header = (const struct slow_oam_tlv_header_t *)tptr; |
| if (tlen < sizeof(*ptr.slow_oam_tlv_header)) |
| goto tooshort; |
| ND_TCHECK(*ptr.slow_oam_tlv_header); |
| type = EXTRACT_U_1(ptr.slow_oam_tlv_header->type); |
| length = EXTRACT_U_1(ptr.slow_oam_tlv_header->length); |
| ND_PRINT((ndo, "\n\t %s Information Type (%u), length %u", |
| tok2str(slow_oam_info_type_values, "Reserved", type), |
| type, |
| length)); |
| |
| if (type == SLOW_OAM_INFO_TYPE_END_OF_TLV) { |
| /* |
| * As IEEE Std 802.3-2015 says for the End of TLV Marker, |
| * "(the length and value of the Type 0x00 TLV can be ignored)". |
| */ |
| return; |
| } |
| |
| /* length includes the type and length fields */ |
| if (length < sizeof(struct slow_oam_tlv_header_t)) { |
| ND_PRINT((ndo, "\n\t ERROR: illegal length - should be >= %u", |
| (u_int)sizeof(struct slow_oam_tlv_header_t))); |
| return; |
| } |
| |
| if (tlen < length) |
| goto tooshort; |
| ND_TCHECK_LEN(tptr, length); |
| |
| hexdump = FALSE; |
| switch (type) { |
| case SLOW_OAM_INFO_TYPE_LOCAL: /* identical format - fall through */ |
| case SLOW_OAM_INFO_TYPE_REMOTE: |
| tlv.slow_oam_info = (const struct slow_oam_info_t *)tptr; |
| |
| if (EXTRACT_U_1(tlv.slow_oam_info->info_length) != |
| sizeof(struct slow_oam_info_t)) { |
| ND_PRINT((ndo, "\n\t ERROR: illegal length - should be %lu", |
| (unsigned long) sizeof(struct slow_oam_info_t))); |
| hexdump = TRUE; |
| goto badlength_code_info; |
| } |
| |
| ND_PRINT((ndo, "\n\t OAM-Version %u, Revision %u", |
| EXTRACT_U_1(tlv.slow_oam_info->oam_version), |
| EXTRACT_BE_U_2(tlv.slow_oam_info->revision))); |
| |
| state = EXTRACT_U_1(tlv.slow_oam_info->state); |
| ND_PRINT((ndo, "\n\t State-Parser-Action %s, State-MUX-Action %s", |
| tok2str(slow_oam_info_type_state_parser_values, "Reserved", |
| state & OAM_INFO_TYPE_PARSER_MASK), |
| tok2str(slow_oam_info_type_state_mux_values, "Reserved", |
| state & OAM_INFO_TYPE_MUX_MASK))); |
| ND_PRINT((ndo, "\n\t OAM-Config Flags [%s], OAM-PDU-Config max-PDU size %u", |
| bittok2str(slow_oam_info_type_oam_config_values, "none", |
| EXTRACT_U_1(tlv.slow_oam_info->oam_config)), |
| EXTRACT_BE_U_2(tlv.slow_oam_info->oam_pdu_config) & |
| OAM_INFO_TYPE_PDU_SIZE_MASK)); |
| ND_PRINT((ndo, "\n\t OUI %s (0x%06x), Vendor-Private 0x%08x", |
| tok2str(oui_values, "Unknown", |
| EXTRACT_BE_U_3(tlv.slow_oam_info->oui)), |
| EXTRACT_BE_U_3(tlv.slow_oam_info->oui), |
| EXTRACT_BE_U_4(tlv.slow_oam_info->vendor_private))); |
| break; |
| |
| case SLOW_OAM_INFO_TYPE_ORG_SPECIFIC: |
| hexdump = TRUE; |
| break; |
| |
| default: |
| hexdump = TRUE; |
| break; |
| } |
| |
| badlength_code_info: |
| /* do we also want to see a hex dump ? */ |
| if (ndo->ndo_vflag > 1 || hexdump==TRUE) { |
| print_unknown_data(ndo, tptr, "\n\t ", |
| length); |
| } |
| |
| tlen -= length; |
| tptr += length; |
| } |
| break; |
| |
| case SLOW_OAM_CODE_EVENT_NOTIF: |
| /* Sequence number */ |
| if (tlen < 2) |
| goto tooshort; |
| ND_TCHECK_2(tptr); |
| ND_PRINT((ndo, "\n\t Sequence Number %u", EXTRACT_BE_U_2(tptr))); |
| tlen -= 2; |
| tptr += 2; |
| |
| /* TLVs */ |
| while (tlen > 0) { |
| ptr.slow_oam_tlv_header = (const struct slow_oam_tlv_header_t *)tptr; |
| if (tlen < sizeof(*ptr.slow_oam_tlv_header)) |
| goto tooshort; |
| ND_TCHECK(*ptr.slow_oam_tlv_header); |
| type = EXTRACT_U_1(ptr.slow_oam_tlv_header->type); |
| length = EXTRACT_U_1(ptr.slow_oam_tlv_header->length); |
| ND_PRINT((ndo, "\n\t %s Link Event Type (%u), length %u", |
| tok2str(slow_oam_link_event_values, "Reserved", |
| type), |
| type, |
| length)); |
| |
| if (type == SLOW_OAM_INFO_TYPE_END_OF_TLV) { |
| /* |
| * As IEEE Std 802.3-2015 says for the End of TLV Marker, |
| * "(the length and value of the Type 0x00 TLV can be ignored)". |
| */ |
| return; |
| } |
| |
| /* length includes the type and length fields */ |
| if (length < sizeof(struct slow_oam_tlv_header_t)) { |
| ND_PRINT((ndo, "\n\t ERROR: illegal length - should be >= %u", |
| (u_int)sizeof(struct slow_oam_tlv_header_t))); |
| return; |
| } |
| |
| if (tlen < length) |
| goto tooshort; |
| ND_TCHECK_LEN(tptr, length); |
| |
| hexdump = FALSE; |
| switch (type) { |
| case SLOW_OAM_LINK_EVENT_ERR_SYM_PER: /* identical format - fall through */ |
| case SLOW_OAM_LINK_EVENT_ERR_FRM: |
| case SLOW_OAM_LINK_EVENT_ERR_FRM_PER: |
| case SLOW_OAM_LINK_EVENT_ERR_FRM_SUMM: |
| tlv.slow_oam_link_event = (const struct slow_oam_link_event_t *)tptr; |
| |
| if (EXTRACT_U_1(tlv.slow_oam_link_event->event_length) != |
| sizeof(struct slow_oam_link_event_t)) { |
| ND_PRINT((ndo, "\n\t ERROR: illegal length - should be %lu", |
| (unsigned long) sizeof(struct slow_oam_link_event_t))); |
| hexdump = TRUE; |
| goto badlength_event_notif; |
| } |
| |
| ND_PRINT((ndo, "\n\t Timestamp %u ms, Errored Window %" PRIu64 |
| "\n\t Errored Threshold %" PRIu64 |
| "\n\t Errors %" PRIu64 |
| "\n\t Error Running Total %" PRIu64 |
| "\n\t Event Running Total %u", |
| EXTRACT_BE_U_2(tlv.slow_oam_link_event->time_stamp)*100, |
| EXTRACT_BE_U_8(tlv.slow_oam_link_event->window), |
| EXTRACT_BE_U_8(tlv.slow_oam_link_event->threshold), |
| EXTRACT_BE_U_8(tlv.slow_oam_link_event->errors), |
| EXTRACT_BE_U_8(tlv.slow_oam_link_event->errors_running_total), |
| EXTRACT_BE_U_4(tlv.slow_oam_link_event->event_running_total))); |
| break; |
| |
| case SLOW_OAM_LINK_EVENT_ORG_SPECIFIC: |
| hexdump = TRUE; |
| break; |
| |
| default: |
| hexdump = TRUE; |
| break; |
| } |
| |
| badlength_event_notif: |
| /* do we also want to see a hex dump ? */ |
| if (ndo->ndo_vflag > 1 || hexdump==TRUE) { |
| print_unknown_data(ndo, tptr, "\n\t ", |
| length); |
| } |
| |
| tlen -= length; |
| tptr += length; |
| } |
| break; |
| |
| case SLOW_OAM_CODE_LOOPBACK_CTRL: |
| tlv.slow_oam_loopbackctrl = (const struct slow_oam_loopbackctrl_t *)tptr; |
| if (tlen < sizeof(*tlv.slow_oam_loopbackctrl)) |
| goto tooshort; |
| ND_TCHECK(*tlv.slow_oam_loopbackctrl); |
| command = EXTRACT_U_1(tlv.slow_oam_loopbackctrl->command); |
| ND_PRINT((ndo, "\n\t Command %s (%u)", |
| tok2str(slow_oam_loopbackctrl_cmd_values, |
| "Unknown", |
| command), |
| command)); |
| tptr ++; |
| tlen --; |
| break; |
| |
| /* |
| * FIXME those are the defined codes that lack a decoder |
| * you are welcome to contribute code ;-) |
| */ |
| case SLOW_OAM_CODE_VAR_REQUEST: |
| case SLOW_OAM_CODE_VAR_RESPONSE: |
| case SLOW_OAM_CODE_PRIVATE: |
| default: |
| if (ndo->ndo_vflag <= 1) { |
| print_unknown_data(ndo, tptr, "\n\t ", tlen); |
| } |
| break; |
| } |
| return; |
| |
| tooshort: |
| ND_PRINT((ndo, "\n\t\t packet is too short")); |
| return; |
| |
| trunc: |
| ND_PRINT((ndo, "\n\t\t packet exceeded snapshot")); |
| } |
