diff options
Diffstat (limited to 'contrib/tcpdump/print-slow.c')
| -rw-r--r-- | contrib/tcpdump/print-slow.c | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/contrib/tcpdump/print-slow.c b/contrib/tcpdump/print-slow.c new file mode 100644 index 000000000000..96099221b9f7 --- /dev/null +++ b/contrib/tcpdump/print-slow.c @@ -0,0 +1,264 @@ +/* + * Copyright (c) 1998-2005 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 + * + * Original code by Hannes Gredler (hannes@juniper.net) + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/tcpdump/print-slow.c,v 1.1.2.1 2005/07/10 14:47:56 hannes Exp $"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <tcpdump-stdinc.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "interface.h" +#include "extract.h" +#include "addrtoname.h" +#include "ether.h" + +struct slow_common_header { + u_int8_t proto_subtype; + u_int8_t version; +}; + +#define SLOW_PROTO_LACP 1 +#define SLOW_PROTO_MARKER 2 + +#define LACP_VERSION 1 +#define MARKER_VERSION 1 + +static const struct tok slow_proto_values[] = { + { SLOW_PROTO_LACP, "LACP" }, + { SLOW_PROTO_MARKER, "MARKER" }, + { 0, NULL} +}; + +struct tlv_header_t { + u_int8_t type; + u_int8_t length; +}; + +#define LACP_TLV_TERMINATOR 0x00 +#define LACP_TLV_ACTOR_INFO 0x01 +#define LACP_TLV_PARTNER_INFO 0x02 +#define LACP_TLV_COLLECTOR_INFO 0x03 + +#define MARKER_TLV_TERMINATOR 0x00 +#define MARKER_TLV_MARKER_INFO 0x01 + +static const struct tok slow_tlv_values[] = { + { (SLOW_PROTO_LACP << 8) + LACP_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) + MARKER_TLV_TERMINATOR, "Terminator"}, + { (SLOW_PROTO_MARKER << 8) + MARKER_TLV_MARKER_INFO, "Marker Information"}, + { 0, NULL} +}; + +struct lacp_tlv_actor_partner_info_t { + u_int8_t sys_pri[2]; + u_int8_t sys[ETHER_ADDR_LEN]; + u_int8_t key[2]; + u_int8_t port_pri[2]; + u_int8_t port[2]; + u_int8_t state; + u_int8_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 { + u_int8_t max_delay[2]; + u_int8_t pad[12]; +}; + +struct marker_tlv_marker_info_t { + u_int8_t req_port[2]; + u_int8_t req_sys[ETHER_ADDR_LEN]; + u_int8_t req_trans_id[4]; + u_int8_t pad[2]; +}; + +struct lacp_marker_tlv_terminator_t { + u_int8_t pad[50]; +}; + +void +slow_print(register const u_char *pptr, register u_int len) { + + const struct slow_common_header *slow_com_header; + const struct tlv_header_t *tlv_header; + const u_char *tptr,*tlv_tptr; + u_int tlv_len,tlen,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; + + tptr=pptr; + slow_com_header = (const struct slow_common_header *)pptr; + TCHECK(*slow_com_header); + + /* + * Sanity checking of the header. + */ + if (slow_com_header->proto_subtype == SLOW_PROTO_LACP && + slow_com_header->version != LACP_VERSION) { + printf("LACP version %u packet not supported",slow_com_header->version); + return; + } + if (slow_com_header->proto_subtype == SLOW_PROTO_MARKER && + slow_com_header->version != MARKER_VERSION) { + printf("MARKER version %u packet not supported",slow_com_header->version); + return; + } + + printf("%sv%u, length: %u", + tok2str(slow_proto_values, "unknown (%u)",slow_com_header->proto_subtype), + slow_com_header->version, + len); + + if (!vflag) + return; + + /* ok they seem to want to know everything - lets fully decode it */ + tlen=len-sizeof(struct slow_common_header); + tptr+=sizeof(const struct slow_common_header); + + while(tlen>0) { + /* did we capture enough for fully decoding the tlv header ? */ + TCHECK2(*tptr, sizeof(struct tlv_header_t)); + tlv_header = (const struct tlv_header_t *)tptr; + tlv_len = tlv_header->length; + + printf("\n\t%s TLV (0x%02x), length: %u", + tok2str(slow_tlv_values, + "Unknown", + (slow_com_header->proto_subtype << 8) + tlv_header->type), + tlv_header->type, + tlv_len); + + if ((tlv_len < sizeof(struct tlv_header_t) || + tlv_len > tlen) && + tlv_header->type != LACP_TLV_TERMINATOR && + tlv_header->type != MARKER_TLV_TERMINATOR) { + printf("\n\t-----trailing data-----"); + print_unknown_data(tptr+sizeof(sizeof(struct tlv_header_t)),"\n\t ",tlen); + return; + } + + tlv_tptr=tptr+sizeof(struct tlv_header_t); + tlv_tlen=tlv_len-sizeof(struct tlv_header_t); + + /* did we capture enough for fully decoding the tlv ? */ + TCHECK2(*tptr, tlv_len); + + switch((slow_com_header->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): + tlv_ptr.lacp_tlv_actor_partner_info = (const struct lacp_tlv_actor_partner_info_t *)tlv_tptr; + + printf("\n\t System %s, System Priority %u, Key %u" \ + ", Port %u, Port Priority %u\n\t State Flags [%s]", + etheraddr_string(tlv_ptr.lacp_tlv_actor_partner_info->sys), + EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->sys_pri), + EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->key), + EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->port), + EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->port_pri), + bittok2str(lacp_tlv_actor_partner_info_state_values, + "none", + tlv_ptr.lacp_tlv_actor_partner_info->state)); + + break; + + case ((SLOW_PROTO_LACP << 8) + LACP_TLV_COLLECTOR_INFO): + tlv_ptr.lacp_tlv_collector_info = (const struct lacp_tlv_collector_info_t *)tlv_tptr; + + printf("\n\t Max Delay %u", + EXTRACT_16BITS(tlv_ptr.lacp_tlv_collector_info->max_delay)); + + break; + + case ((SLOW_PROTO_MARKER << 8) + MARKER_TLV_MARKER_INFO): + tlv_ptr.marker_tlv_marker_info = (const struct marker_tlv_marker_info_t *)tlv_tptr; + + printf("\n\t Request System %s, Request Port %u, Request Transaction ID 0x%08x", + etheraddr_string(tlv_ptr.marker_tlv_marker_info->req_sys), + EXTRACT_16BITS(tlv_ptr.marker_tlv_marker_info->req_port), + EXTRACT_32BITS(tlv_ptr.marker_tlv_marker_info->req_trans_id)); + + break; + + /* those two TLVs have the same structure -> fall through */ + case ((SLOW_PROTO_LACP << 8) + LACP_TLV_TERMINATOR): + case ((SLOW_PROTO_MARKER << 8) + LACP_TLV_TERMINATOR): + tlv_ptr.lacp_marker_tlv_terminator = (const struct lacp_marker_tlv_terminator_t *)tlv_tptr; + if (tlv_len == 0) { + tlv_len = sizeof(tlv_ptr.lacp_marker_tlv_terminator->pad) + + sizeof(struct tlv_header_t); + /* tell the user that we modified the length field */ + if (vflag>1) + printf(" (=%u)",tlv_len); + /* we have messed around with the length field - now we need to check + * again if there are enough bytes on the wire for the hexdump */ + TCHECK2(tlv_ptr.lacp_marker_tlv_terminator->pad[0], + sizeof(tlv_ptr.lacp_marker_tlv_terminator->pad)); + } + + break; + + default: + if (vflag <= 1) + print_unknown_data(tlv_tptr,"\n\t ",tlv_tlen); + break; + } + /* do we want to see an additionally hexdump ? */ + if (vflag > 1) + print_unknown_data(tptr+sizeof(sizeof(struct tlv_header_t)),"\n\t ", + tlv_len-sizeof(struct tlv_header_t)); + + tptr+=tlv_len; + tlen-=tlv_len; + } + return; +trunc: + printf("\n\t\t packet exceeded snapshot"); +} |