| /* |
| * Copyright (c) 1998-2007 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. |
| * |
| * Original code by Carles Kishimoto <carles.kishimoto@gmail.com> |
| * |
| * Expansion and refactoring by Rick Jones <rick.jones2@hp.com> |
| */ |
| |
| /* \summary: sFlow protocol printer */ |
| |
| /* specification: https://sflow.org/developers/specifications.php */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include "netdissect-stdinc.h" |
| |
| #define ND_LONGJMP_FROM_TCHECK |
| #include "netdissect.h" |
| #include "extract.h" |
| #include "addrtoname.h" |
| |
| /* |
| * sFlow datagram |
| * |
| * 0 1 2 3 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Sflow version (2,4,5) | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | IP version (1 for IPv4 | 2 for IPv6) | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | IP Address AGENT (4 or 16 bytes) | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Sub agent ID | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Datagram sequence number | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Switch uptime in ms | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | num samples in datagram | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * |
| */ |
| |
| struct sflow_datagram_t { |
| nd_uint32_t version; |
| nd_uint32_t ip_version; |
| nd_ipv4 agent; |
| nd_uint32_t agent_id; |
| nd_uint32_t seqnum; |
| nd_uint32_t uptime; |
| nd_uint32_t samples; |
| }; |
| |
| struct sflow_v6_datagram_t { |
| nd_uint32_t version; |
| nd_uint32_t ip_version; |
| nd_ipv6 agent; |
| nd_uint32_t agent_id; |
| nd_uint32_t seqnum; |
| nd_uint32_t uptime; |
| nd_uint32_t samples; |
| }; |
| |
| struct sflow_sample_header { |
| nd_uint32_t format; |
| nd_uint32_t len; |
| }; |
| |
| #define SFLOW_FLOW_SAMPLE 1 |
| #define SFLOW_COUNTER_SAMPLE 2 |
| #define SFLOW_EXPANDED_FLOW_SAMPLE 3 |
| #define SFLOW_EXPANDED_COUNTER_SAMPLE 4 |
| |
| static const struct tok sflow_format_values[] = { |
| { SFLOW_FLOW_SAMPLE, "flow sample" }, |
| { SFLOW_COUNTER_SAMPLE, "counter sample" }, |
| { SFLOW_EXPANDED_FLOW_SAMPLE, "expanded flow sample" }, |
| { SFLOW_EXPANDED_COUNTER_SAMPLE, "expanded counter sample" }, |
| { 0, NULL} |
| }; |
| |
| struct sflow_flow_sample_t { |
| nd_uint32_t seqnum; |
| nd_uint8_t type; |
| nd_uint24_t index; |
| nd_uint32_t rate; |
| nd_uint32_t pool; |
| nd_uint32_t drops; |
| nd_uint32_t in_interface; |
| nd_uint32_t out_interface; |
| nd_uint32_t records; |
| |
| }; |
| |
| struct sflow_expanded_flow_sample_t { |
| nd_uint32_t seqnum; |
| nd_uint32_t type; |
| nd_uint32_t index; |
| nd_uint32_t rate; |
| nd_uint32_t pool; |
| nd_uint32_t drops; |
| nd_uint32_t in_interface_format; |
| nd_uint32_t in_interface_value; |
| nd_uint32_t out_interface_format; |
| nd_uint32_t out_interface_value; |
| nd_uint32_t records; |
| }; |
| |
| #define SFLOW_FLOW_RAW_PACKET 1 |
| #define SFLOW_FLOW_ETHERNET_FRAME 2 |
| #define SFLOW_FLOW_IPV4_DATA 3 |
| #define SFLOW_FLOW_IPV6_DATA 4 |
| #define SFLOW_FLOW_EXTENDED_SWITCH_DATA 1001 |
| #define SFLOW_FLOW_EXTENDED_ROUTER_DATA 1002 |
| #define SFLOW_FLOW_EXTENDED_GATEWAY_DATA 1003 |
| #define SFLOW_FLOW_EXTENDED_USER_DATA 1004 |
| #define SFLOW_FLOW_EXTENDED_URL_DATA 1005 |
| #define SFLOW_FLOW_EXTENDED_MPLS_DATA 1006 |
| #define SFLOW_FLOW_EXTENDED_NAT_DATA 1007 |
| #define SFLOW_FLOW_EXTENDED_MPLS_TUNNEL 1008 |
| #define SFLOW_FLOW_EXTENDED_MPLS_VC 1009 |
| #define SFLOW_FLOW_EXTENDED_MPLS_FEC 1010 |
| #define SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC 1011 |
| #define SFLOW_FLOW_EXTENDED_VLAN_TUNNEL 1012 |
| |
| static const struct tok sflow_flow_type_values[] = { |
| { SFLOW_FLOW_RAW_PACKET, "Raw packet"}, |
| { SFLOW_FLOW_ETHERNET_FRAME, "Ethernet frame"}, |
| { SFLOW_FLOW_IPV4_DATA, "IPv4 Data"}, |
| { SFLOW_FLOW_IPV6_DATA, "IPv6 Data"}, |
| { SFLOW_FLOW_EXTENDED_SWITCH_DATA, "Extended Switch data"}, |
| { SFLOW_FLOW_EXTENDED_ROUTER_DATA, "Extended Router data"}, |
| { SFLOW_FLOW_EXTENDED_GATEWAY_DATA, "Extended Gateway data"}, |
| { SFLOW_FLOW_EXTENDED_USER_DATA, "Extended User data"}, |
| { SFLOW_FLOW_EXTENDED_URL_DATA, "Extended URL data"}, |
| { SFLOW_FLOW_EXTENDED_MPLS_DATA, "Extended MPLS data"}, |
| { SFLOW_FLOW_EXTENDED_NAT_DATA, "Extended NAT data"}, |
| { SFLOW_FLOW_EXTENDED_MPLS_TUNNEL, "Extended MPLS tunnel"}, |
| { SFLOW_FLOW_EXTENDED_MPLS_VC, "Extended MPLS VC"}, |
| { SFLOW_FLOW_EXTENDED_MPLS_FEC, "Extended MPLS FEC"}, |
| { SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC, "Extended MPLS LVP FEC"}, |
| { SFLOW_FLOW_EXTENDED_VLAN_TUNNEL, "Extended VLAN Tunnel"}, |
| { 0, NULL} |
| }; |
| |
| #define SFLOW_HEADER_PROTOCOL_ETHERNET 1 |
| #define SFLOW_HEADER_PROTOCOL_IPV4 11 |
| #define SFLOW_HEADER_PROTOCOL_IPV6 12 |
| |
| static const struct tok sflow_flow_raw_protocol_values[] = { |
| { SFLOW_HEADER_PROTOCOL_ETHERNET, "Ethernet"}, |
| { SFLOW_HEADER_PROTOCOL_IPV4, "IPv4"}, |
| { SFLOW_HEADER_PROTOCOL_IPV6, "IPv6"}, |
| { 0, NULL} |
| }; |
| |
| struct sflow_expanded_flow_raw_t { |
| nd_uint32_t protocol; |
| nd_uint32_t length; |
| nd_uint32_t stripped_bytes; |
| nd_uint32_t header_size; |
| }; |
| |
| struct sflow_ethernet_frame_t { |
| nd_uint32_t length; |
| nd_byte src_mac[8]; |
| nd_byte dst_mac[8]; |
| nd_uint32_t type; |
| }; |
| |
| struct sflow_extended_switch_data_t { |
| nd_uint32_t src_vlan; |
| nd_uint32_t src_pri; |
| nd_uint32_t dst_vlan; |
| nd_uint32_t dst_pri; |
| }; |
| |
| struct sflow_counter_record_t { |
| nd_uint32_t format; |
| nd_uint32_t length; |
| }; |
| |
| struct sflow_flow_record_t { |
| nd_uint32_t format; |
| nd_uint32_t length; |
| }; |
| |
| struct sflow_counter_sample_t { |
| nd_uint32_t seqnum; |
| nd_uint8_t type; |
| nd_uint24_t index; |
| nd_uint32_t records; |
| }; |
| |
| struct sflow_expanded_counter_sample_t { |
| nd_uint32_t seqnum; |
| nd_uint32_t type; |
| nd_uint32_t index; |
| nd_uint32_t records; |
| }; |
| |
| #define SFLOW_COUNTER_GENERIC 1 |
| #define SFLOW_COUNTER_ETHERNET 2 |
| #define SFLOW_COUNTER_TOKEN_RING 3 |
| #define SFLOW_COUNTER_BASEVG 4 |
| #define SFLOW_COUNTER_VLAN 5 |
| #define SFLOW_COUNTER_PROCESSOR 1001 |
| |
| static const struct tok sflow_counter_type_values[] = { |
| { SFLOW_COUNTER_GENERIC, "Generic counter"}, |
| { SFLOW_COUNTER_ETHERNET, "Ethernet counter"}, |
| { SFLOW_COUNTER_TOKEN_RING, "Token ring counter"}, |
| { SFLOW_COUNTER_BASEVG, "100 BaseVG counter"}, |
| { SFLOW_COUNTER_VLAN, "Vlan counter"}, |
| { SFLOW_COUNTER_PROCESSOR, "Processor counter"}, |
| { 0, NULL} |
| }; |
| |
| #define SFLOW_IFACE_DIRECTION_UNKNOWN 0 |
| #define SFLOW_IFACE_DIRECTION_FULLDUPLEX 1 |
| #define SFLOW_IFACE_DIRECTION_HALFDUPLEX 2 |
| #define SFLOW_IFACE_DIRECTION_IN 3 |
| #define SFLOW_IFACE_DIRECTION_OUT 4 |
| |
| static const struct tok sflow_iface_direction_values[] = { |
| { SFLOW_IFACE_DIRECTION_UNKNOWN, "unknown"}, |
| { SFLOW_IFACE_DIRECTION_FULLDUPLEX, "full-duplex"}, |
| { SFLOW_IFACE_DIRECTION_HALFDUPLEX, "half-duplex"}, |
| { SFLOW_IFACE_DIRECTION_IN, "in"}, |
| { SFLOW_IFACE_DIRECTION_OUT, "out"}, |
| { 0, NULL} |
| }; |
| |
| struct sflow_generic_counter_t { |
| nd_uint32_t ifindex; |
| nd_uint32_t iftype; |
| nd_uint64_t ifspeed; |
| nd_uint32_t ifdirection; |
| nd_uint32_t ifstatus; |
| nd_uint64_t ifinoctets; |
| nd_uint32_t ifinunicastpkts; |
| nd_uint32_t ifinmulticastpkts; |
| nd_uint32_t ifinbroadcastpkts; |
| nd_uint32_t ifindiscards; |
| nd_uint32_t ifinerrors; |
| nd_uint32_t ifinunkownprotos; |
| nd_uint64_t ifoutoctets; |
| nd_uint32_t ifoutunicastpkts; |
| nd_uint32_t ifoutmulticastpkts; |
| nd_uint32_t ifoutbroadcastpkts; |
| nd_uint32_t ifoutdiscards; |
| nd_uint32_t ifouterrors; |
| nd_uint32_t ifpromiscmode; |
| }; |
| |
| struct sflow_ethernet_counter_t { |
| nd_uint32_t alignerrors; |
| nd_uint32_t fcserrors; |
| nd_uint32_t single_collision_frames; |
| nd_uint32_t multiple_collision_frames; |
| nd_uint32_t test_errors; |
| nd_uint32_t deferred_transmissions; |
| nd_uint32_t late_collisions; |
| nd_uint32_t excessive_collisions; |
| nd_uint32_t mac_transmit_errors; |
| nd_uint32_t carrier_sense_errors; |
| nd_uint32_t frame_too_longs; |
| nd_uint32_t mac_receive_errors; |
| nd_uint32_t symbol_errors; |
| }; |
| |
| struct sflow_100basevg_counter_t { |
| nd_uint32_t in_highpriority_frames; |
| nd_uint64_t in_highpriority_octets; |
| nd_uint32_t in_normpriority_frames; |
| nd_uint64_t in_normpriority_octets; |
| nd_uint32_t in_ipmerrors; |
| nd_uint32_t in_oversized; |
| nd_uint32_t in_data_errors; |
| nd_uint32_t in_null_addressed_frames; |
| nd_uint32_t out_highpriority_frames; |
| nd_uint64_t out_highpriority_octets; |
| nd_uint32_t transitioninto_frames; |
| nd_uint64_t hc_in_highpriority_octets; |
| nd_uint64_t hc_in_normpriority_octets; |
| nd_uint64_t hc_out_highpriority_octets; |
| }; |
| |
| struct sflow_vlan_counter_t { |
| nd_uint32_t vlan_id; |
| nd_uint64_t octets; |
| nd_uint32_t unicast_pkt; |
| nd_uint32_t multicast_pkt; |
| nd_uint32_t broadcast_pkt; |
| nd_uint32_t discards; |
| }; |
| |
| static int |
| print_sflow_counter_generic(netdissect_options *ndo, |
| const u_char *pointer, u_int len) |
| { |
| const struct sflow_generic_counter_t *sflow_gen_counter; |
| |
| if (len < sizeof(struct sflow_generic_counter_t)) |
| return 1; |
| |
| sflow_gen_counter = (const struct sflow_generic_counter_t *)pointer; |
| ND_PRINT("\n\t ifindex %u, iftype %u, ifspeed %" PRIu64 ", ifdirection %u (%s)", |
| GET_BE_U_4(sflow_gen_counter->ifindex), |
| GET_BE_U_4(sflow_gen_counter->iftype), |
| GET_BE_U_8(sflow_gen_counter->ifspeed), |
| GET_BE_U_4(sflow_gen_counter->ifdirection), |
| tok2str(sflow_iface_direction_values, "Unknown", |
| GET_BE_U_4(sflow_gen_counter->ifdirection))); |
| ND_PRINT("\n\t ifstatus %u, adminstatus: %s, operstatus: %s", |
| GET_BE_U_4(sflow_gen_counter->ifstatus), |
| GET_BE_U_4(sflow_gen_counter->ifstatus)&1 ? "up" : "down", |
| (GET_BE_U_4(sflow_gen_counter->ifstatus)>>1)&1 ? "up" : "down"); |
| ND_PRINT("\n\t In octets %" PRIu64 |
| ", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u", |
| GET_BE_U_8(sflow_gen_counter->ifinoctets), |
| GET_BE_U_4(sflow_gen_counter->ifinunicastpkts), |
| GET_BE_U_4(sflow_gen_counter->ifinmulticastpkts), |
| GET_BE_U_4(sflow_gen_counter->ifinbroadcastpkts), |
| GET_BE_U_4(sflow_gen_counter->ifindiscards)); |
| ND_PRINT("\n\t In errors %u, unknown protos %u", |
| GET_BE_U_4(sflow_gen_counter->ifinerrors), |
| GET_BE_U_4(sflow_gen_counter->ifinunkownprotos)); |
| ND_PRINT("\n\t Out octets %" PRIu64 |
| ", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u", |
| GET_BE_U_8(sflow_gen_counter->ifoutoctets), |
| GET_BE_U_4(sflow_gen_counter->ifoutunicastpkts), |
| GET_BE_U_4(sflow_gen_counter->ifoutmulticastpkts), |
| GET_BE_U_4(sflow_gen_counter->ifoutbroadcastpkts), |
| GET_BE_U_4(sflow_gen_counter->ifoutdiscards)); |
| ND_PRINT("\n\t Out errors %u, promisc mode %u", |
| GET_BE_U_4(sflow_gen_counter->ifouterrors), |
| GET_BE_U_4(sflow_gen_counter->ifpromiscmode)); |
| |
| return 0; |
| } |
| |
| static int |
| print_sflow_counter_ethernet(netdissect_options *ndo, |
| const u_char *pointer, u_int len) |
| { |
| const struct sflow_ethernet_counter_t *sflow_eth_counter; |
| |
| if (len < sizeof(struct sflow_ethernet_counter_t)) |
| return 1; |
| |
| sflow_eth_counter = (const struct sflow_ethernet_counter_t *)pointer; |
| ND_PRINT("\n\t align errors %u, fcs errors %u, single collision %u, multiple collision %u, test error %u", |
| GET_BE_U_4(sflow_eth_counter->alignerrors), |
| GET_BE_U_4(sflow_eth_counter->fcserrors), |
| GET_BE_U_4(sflow_eth_counter->single_collision_frames), |
| GET_BE_U_4(sflow_eth_counter->multiple_collision_frames), |
| GET_BE_U_4(sflow_eth_counter->test_errors)); |
| ND_PRINT("\n\t deferred %u, late collision %u, excessive collision %u, mac trans error %u", |
| GET_BE_U_4(sflow_eth_counter->deferred_transmissions), |
| GET_BE_U_4(sflow_eth_counter->late_collisions), |
| GET_BE_U_4(sflow_eth_counter->excessive_collisions), |
| GET_BE_U_4(sflow_eth_counter->mac_transmit_errors)); |
| ND_PRINT("\n\t carrier error %u, frames too long %u, mac receive errors %u, symbol errors %u", |
| GET_BE_U_4(sflow_eth_counter->carrier_sense_errors), |
| GET_BE_U_4(sflow_eth_counter->frame_too_longs), |
| GET_BE_U_4(sflow_eth_counter->mac_receive_errors), |
| GET_BE_U_4(sflow_eth_counter->symbol_errors)); |
| |
| return 0; |
| } |
| |
| static int |
| print_sflow_counter_token_ring(netdissect_options *ndo _U_, |
| const u_char *pointer _U_, u_int len _U_) |
| { |
| return 0; |
| } |
| |
| static int |
| print_sflow_counter_basevg(netdissect_options *ndo, |
| const u_char *pointer, u_int len) |
| { |
| const struct sflow_100basevg_counter_t *sflow_100basevg_counter; |
| |
| if (len < sizeof(struct sflow_100basevg_counter_t)) |
| return 1; |
| |
| sflow_100basevg_counter = (const struct sflow_100basevg_counter_t *)pointer; |
| ND_PRINT("\n\t in high prio frames %u, in high prio octets %" PRIu64, |
| GET_BE_U_4(sflow_100basevg_counter->in_highpriority_frames), |
| GET_BE_U_8(sflow_100basevg_counter->in_highpriority_octets)); |
| ND_PRINT("\n\t in norm prio frames %u, in norm prio octets %" PRIu64, |
| GET_BE_U_4(sflow_100basevg_counter->in_normpriority_frames), |
| GET_BE_U_8(sflow_100basevg_counter->in_normpriority_octets)); |
| ND_PRINT("\n\t in ipm errors %u, oversized %u, in data errors %u, null addressed frames %u", |
| GET_BE_U_4(sflow_100basevg_counter->in_ipmerrors), |
| GET_BE_U_4(sflow_100basevg_counter->in_oversized), |
| GET_BE_U_4(sflow_100basevg_counter->in_data_errors), |
| GET_BE_U_4(sflow_100basevg_counter->in_null_addressed_frames)); |
| ND_PRINT("\n\t out high prio frames %u, out high prio octets %" PRIu64 |
| ", trans into frames %u", |
| GET_BE_U_4(sflow_100basevg_counter->out_highpriority_frames), |
| GET_BE_U_8(sflow_100basevg_counter->out_highpriority_octets), |
| GET_BE_U_4(sflow_100basevg_counter->transitioninto_frames)); |
| ND_PRINT("\n\t in hc high prio octets %" PRIu64 |
| ", in hc norm prio octets %" PRIu64 |
| ", out hc high prio octets %" PRIu64, |
| GET_BE_U_8(sflow_100basevg_counter->hc_in_highpriority_octets), |
| GET_BE_U_8(sflow_100basevg_counter->hc_in_normpriority_octets), |
| GET_BE_U_8(sflow_100basevg_counter->hc_out_highpriority_octets)); |
| |
| return 0; |
| } |
| |
| static int |
| print_sflow_counter_vlan(netdissect_options *ndo, |
| const u_char *pointer, u_int len) |
| { |
| const struct sflow_vlan_counter_t *sflow_vlan_counter; |
| |
| if (len < sizeof(struct sflow_vlan_counter_t)) |
| return 1; |
| |
| sflow_vlan_counter = (const struct sflow_vlan_counter_t *)pointer; |
| ND_PRINT("\n\t vlan_id %u, octets %" PRIu64 |
| ", unicast_pkt %u, multicast_pkt %u, broadcast_pkt %u, discards %u", |
| GET_BE_U_4(sflow_vlan_counter->vlan_id), |
| GET_BE_U_8(sflow_vlan_counter->octets), |
| GET_BE_U_4(sflow_vlan_counter->unicast_pkt), |
| GET_BE_U_4(sflow_vlan_counter->multicast_pkt), |
| GET_BE_U_4(sflow_vlan_counter->broadcast_pkt), |
| GET_BE_U_4(sflow_vlan_counter->discards)); |
| |
| return 0; |
| } |
| |
| struct sflow_processor_counter_t { |
| nd_uint32_t five_sec_util; |
| nd_uint32_t one_min_util; |
| nd_uint32_t five_min_util; |
| nd_uint64_t total_memory; |
| nd_uint64_t free_memory; |
| }; |
| |
| static int |
| print_sflow_counter_processor(netdissect_options *ndo, |
| const u_char *pointer, u_int len) |
| { |
| const struct sflow_processor_counter_t *sflow_processor_counter; |
| |
| if (len < sizeof(struct sflow_processor_counter_t)) |
| return 1; |
| |
| sflow_processor_counter = (const struct sflow_processor_counter_t *)pointer; |
| ND_PRINT("\n\t 5sec %u, 1min %u, 5min %u, total_mem %" PRIu64 |
| ", total_mem %" PRIu64, |
| GET_BE_U_4(sflow_processor_counter->five_sec_util), |
| GET_BE_U_4(sflow_processor_counter->one_min_util), |
| GET_BE_U_4(sflow_processor_counter->five_min_util), |
| GET_BE_U_8(sflow_processor_counter->total_memory), |
| GET_BE_U_8(sflow_processor_counter->free_memory)); |
| |
| return 0; |
| } |
| |
| static int |
| sflow_print_counter_records(netdissect_options *ndo, |
| const u_char *pointer, u_int len, u_int records) |
| { |
| u_int nrecords; |
| const u_char *tptr; |
| u_int tlen; |
| u_int counter_type; |
| u_int counter_len; |
| u_int enterprise; |
| const struct sflow_counter_record_t *sflow_counter_record; |
| |
| nrecords = records; |
| tptr = pointer; |
| tlen = len; |
| |
| while (nrecords > 0) { |
| /* do we have the "header?" */ |
| if (tlen < sizeof(struct sflow_counter_record_t)) |
| return 1; |
| sflow_counter_record = (const struct sflow_counter_record_t *)tptr; |
| |
| enterprise = GET_BE_U_4(sflow_counter_record->format); |
| counter_type = enterprise & 0x0FFF; |
| enterprise = enterprise >> 20; |
| counter_len = GET_BE_U_4(sflow_counter_record->length); |
| ND_PRINT("\n\t enterprise %u, %s (%u) length %u", |
| enterprise, |
| (enterprise == 0) ? tok2str(sflow_counter_type_values,"Unknown",counter_type) : "Unknown", |
| counter_type, |
| counter_len); |
| |
| tptr += sizeof(struct sflow_counter_record_t); |
| tlen -= sizeof(struct sflow_counter_record_t); |
| |
| if (tlen < counter_len) |
| return 1; |
| if (enterprise == 0) { |
| switch (counter_type) { |
| case SFLOW_COUNTER_GENERIC: |
| if (print_sflow_counter_generic(ndo, tptr, tlen)) |
| return 1; |
| break; |
| case SFLOW_COUNTER_ETHERNET: |
| if (print_sflow_counter_ethernet(ndo, tptr, tlen)) |
| return 1; |
| break; |
| case SFLOW_COUNTER_TOKEN_RING: |
| if (print_sflow_counter_token_ring(ndo, tptr,tlen)) |
| return 1; |
| break; |
| case SFLOW_COUNTER_BASEVG: |
| if (print_sflow_counter_basevg(ndo, tptr, tlen)) |
| return 1; |
| break; |
| case SFLOW_COUNTER_VLAN: |
| if (print_sflow_counter_vlan(ndo, tptr, tlen)) |
| return 1; |
| break; |
| case SFLOW_COUNTER_PROCESSOR: |
| if (print_sflow_counter_processor(ndo, tptr, tlen)) |
| return 1; |
| break; |
| default: |
| if (ndo->ndo_vflag <= 1) |
| print_unknown_data(ndo, tptr, "\n\t\t", counter_len); |
| break; |
| } |
| } |
| tptr += counter_len; |
| tlen -= counter_len; |
| nrecords--; |
| |
| } |
| |
| return 0; |
| } |
| |
| static int |
| sflow_print_counter_sample(netdissect_options *ndo, |
| const u_char *pointer, u_int len) |
| { |
| const struct sflow_counter_sample_t *sflow_counter_sample; |
| u_int nrecords; |
| |
| if (len < sizeof(struct sflow_counter_sample_t)) |
| return 1; |
| |
| sflow_counter_sample = (const struct sflow_counter_sample_t *)pointer; |
| |
| nrecords = GET_BE_U_4(sflow_counter_sample->records); |
| |
| ND_PRINT(" seqnum %u, type %u, idx %u, records %u", |
| GET_BE_U_4(sflow_counter_sample->seqnum), |
| GET_U_1(sflow_counter_sample->type), |
| GET_BE_U_3(sflow_counter_sample->index), |
| nrecords); |
| |
| return sflow_print_counter_records(ndo, pointer + sizeof(struct sflow_counter_sample_t), |
| len - sizeof(struct sflow_counter_sample_t), |
| nrecords); |
| } |
| |
| static int |
| sflow_print_expanded_counter_sample(netdissect_options *ndo, |
| const u_char *pointer, u_int len) |
| { |
| const struct sflow_expanded_counter_sample_t *sflow_expanded_counter_sample; |
| u_int nrecords; |
| |
| |
| if (len < sizeof(struct sflow_expanded_counter_sample_t)) |
| return 1; |
| |
| sflow_expanded_counter_sample = (const struct sflow_expanded_counter_sample_t *)pointer; |
| |
| nrecords = GET_BE_U_4(sflow_expanded_counter_sample->records); |
| |
| ND_PRINT(" seqnum %u, type %u, idx %u, records %u", |
| GET_BE_U_4(sflow_expanded_counter_sample->seqnum), |
| GET_BE_U_4(sflow_expanded_counter_sample->type), |
| GET_BE_U_4(sflow_expanded_counter_sample->index), |
| nrecords); |
| |
| return sflow_print_counter_records(ndo, pointer + sizeof(struct sflow_expanded_counter_sample_t), |
| len - sizeof(struct sflow_expanded_counter_sample_t), |
| nrecords); |
| } |
| |
| static int |
| print_sflow_raw_packet(netdissect_options *ndo, |
| const u_char *pointer, u_int len) |
| { |
| const struct sflow_expanded_flow_raw_t *sflow_flow_raw; |
| |
| if (len < sizeof(struct sflow_expanded_flow_raw_t)) |
| return 1; |
| |
| sflow_flow_raw = (const struct sflow_expanded_flow_raw_t *)pointer; |
| ND_PRINT("\n\t protocol %s (%u), length %u, stripped bytes %u, header_size %u", |
| tok2str(sflow_flow_raw_protocol_values,"Unknown",GET_BE_U_4(sflow_flow_raw->protocol)), |
| GET_BE_U_4(sflow_flow_raw->protocol), |
| GET_BE_U_4(sflow_flow_raw->length), |
| GET_BE_U_4(sflow_flow_raw->stripped_bytes), |
| GET_BE_U_4(sflow_flow_raw->header_size)); |
| |
| /* QUESTION - should we attempt to print the raw header itself? |
| assuming of course there is enough data present to do so... */ |
| |
| return 0; |
| } |
| |
| static int |
| print_sflow_ethernet_frame(netdissect_options *ndo, |
| const u_char *pointer, u_int len) |
| { |
| const struct sflow_ethernet_frame_t *sflow_ethernet_frame; |
| |
| if (len < sizeof(struct sflow_ethernet_frame_t)) |
| return 1; |
| |
| sflow_ethernet_frame = (const struct sflow_ethernet_frame_t *)pointer; |
| |
| ND_PRINT("\n\t frame len %u, type %u", |
| GET_BE_U_4(sflow_ethernet_frame->length), |
| GET_BE_U_4(sflow_ethernet_frame->type)); |
| |
| return 0; |
| } |
| |
| static int |
| print_sflow_extended_switch_data(netdissect_options *ndo, |
| const u_char *pointer, u_int len) |
| { |
| const struct sflow_extended_switch_data_t *sflow_extended_sw_data; |
| |
| if (len < sizeof(struct sflow_extended_switch_data_t)) |
| return 1; |
| |
| sflow_extended_sw_data = (const struct sflow_extended_switch_data_t *)pointer; |
| ND_PRINT("\n\t src vlan %u, src pri %u, dst vlan %u, dst pri %u", |
| GET_BE_U_4(sflow_extended_sw_data->src_vlan), |
| GET_BE_U_4(sflow_extended_sw_data->src_pri), |
| GET_BE_U_4(sflow_extended_sw_data->dst_vlan), |
| GET_BE_U_4(sflow_extended_sw_data->dst_pri)); |
| |
| return 0; |
| } |
| |
| static int |
| sflow_print_flow_records(netdissect_options *ndo, |
| const u_char *pointer, u_int len, u_int records) |
| { |
| u_int nrecords; |
| const u_char *tptr; |
| u_int tlen; |
| u_int flow_type; |
| u_int enterprise; |
| u_int flow_len; |
| const struct sflow_flow_record_t *sflow_flow_record; |
| |
| nrecords = records; |
| tptr = pointer; |
| tlen = len; |
| |
| while (nrecords > 0) { |
| /* do we have the "header?" */ |
| if (tlen < sizeof(struct sflow_flow_record_t)) |
| return 1; |
| |
| sflow_flow_record = (const struct sflow_flow_record_t *)tptr; |
| |
| /* so, the funky encoding means we cannot blythly mask-off |
| bits, we must also check the enterprise. */ |
| |
| enterprise = GET_BE_U_4(sflow_flow_record->format); |
| flow_type = enterprise & 0x0FFF; |
| enterprise = enterprise >> 12; |
| flow_len = GET_BE_U_4(sflow_flow_record->length); |
| ND_PRINT("\n\t enterprise %u %s (%u) length %u", |
| enterprise, |
| (enterprise == 0) ? tok2str(sflow_flow_type_values,"Unknown",flow_type) : "Unknown", |
| flow_type, |
| flow_len); |
| |
| tptr += sizeof(struct sflow_flow_record_t); |
| tlen -= sizeof(struct sflow_flow_record_t); |
| |
| if (tlen < flow_len) |
| return 1; |
| |
| if (enterprise == 0) { |
| switch (flow_type) { |
| case SFLOW_FLOW_RAW_PACKET: |
| if (print_sflow_raw_packet(ndo, tptr, tlen)) |
| return 1; |
| break; |
| case SFLOW_FLOW_EXTENDED_SWITCH_DATA: |
| if (print_sflow_extended_switch_data(ndo, tptr, tlen)) |
| return 1; |
| break; |
| case SFLOW_FLOW_ETHERNET_FRAME: |
| if (print_sflow_ethernet_frame(ndo, tptr, tlen)) |
| return 1; |
| break; |
| /* FIXME these need a decoder */ |
| case SFLOW_FLOW_IPV4_DATA: |
| case SFLOW_FLOW_IPV6_DATA: |
| case SFLOW_FLOW_EXTENDED_ROUTER_DATA: |
| case SFLOW_FLOW_EXTENDED_GATEWAY_DATA: |
| case SFLOW_FLOW_EXTENDED_USER_DATA: |
| case SFLOW_FLOW_EXTENDED_URL_DATA: |
| case SFLOW_FLOW_EXTENDED_MPLS_DATA: |
| case SFLOW_FLOW_EXTENDED_NAT_DATA: |
| case SFLOW_FLOW_EXTENDED_MPLS_TUNNEL: |
| case SFLOW_FLOW_EXTENDED_MPLS_VC: |
| case SFLOW_FLOW_EXTENDED_MPLS_FEC: |
| case SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC: |
| case SFLOW_FLOW_EXTENDED_VLAN_TUNNEL: |
| break; |
| default: |
| if (ndo->ndo_vflag <= 1) |
| print_unknown_data(ndo, tptr, "\n\t\t", flow_len); |
| break; |
| } |
| } |
| tptr += flow_len; |
| tlen -= flow_len; |
| nrecords--; |
| |
| } |
| |
| return 0; |
| } |
| |
| static int |
| sflow_print_flow_sample(netdissect_options *ndo, |
| const u_char *pointer, u_int len) |
| { |
| const struct sflow_flow_sample_t *sflow_flow_sample; |
| u_int nrecords; |
| |
| if (len < sizeof(struct sflow_flow_sample_t)) |
| return 1; |
| |
| sflow_flow_sample = (const struct sflow_flow_sample_t *)pointer; |
| |
| nrecords = GET_BE_U_4(sflow_flow_sample->records); |
| |
| ND_PRINT(" seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, input %u output %u records %u", |
| GET_BE_U_4(sflow_flow_sample->seqnum), |
| GET_U_1(sflow_flow_sample->type), |
| GET_BE_U_3(sflow_flow_sample->index), |
| GET_BE_U_4(sflow_flow_sample->rate), |
| GET_BE_U_4(sflow_flow_sample->pool), |
| GET_BE_U_4(sflow_flow_sample->drops), |
| GET_BE_U_4(sflow_flow_sample->in_interface), |
| GET_BE_U_4(sflow_flow_sample->out_interface), |
| nrecords); |
| |
| return sflow_print_flow_records(ndo, pointer + sizeof(struct sflow_flow_sample_t), |
| len - sizeof(struct sflow_flow_sample_t), |
| nrecords); |
| } |
| |
| static int |
| sflow_print_expanded_flow_sample(netdissect_options *ndo, |
| const u_char *pointer, u_int len) |
| { |
| const struct sflow_expanded_flow_sample_t *sflow_expanded_flow_sample; |
| u_int nrecords; |
| |
| if (len < sizeof(struct sflow_expanded_flow_sample_t)) |
| return 1; |
| |
| sflow_expanded_flow_sample = (const struct sflow_expanded_flow_sample_t *)pointer; |
| |
| nrecords = GET_BE_U_4(sflow_expanded_flow_sample->records); |
| |
| ND_PRINT(" seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, records %u", |
| GET_BE_U_4(sflow_expanded_flow_sample->seqnum), |
| GET_BE_U_4(sflow_expanded_flow_sample->type), |
| GET_BE_U_4(sflow_expanded_flow_sample->index), |
| GET_BE_U_4(sflow_expanded_flow_sample->rate), |
| GET_BE_U_4(sflow_expanded_flow_sample->pool), |
| GET_BE_U_4(sflow_expanded_flow_sample->drops), |
| nrecords); |
| |
| return sflow_print_flow_records(ndo, pointer + sizeof(struct sflow_expanded_flow_sample_t), |
| len - sizeof(struct sflow_expanded_flow_sample_t), |
| nrecords); |
| } |
| |
| void |
| sflow_print(netdissect_options *ndo, |
| const u_char *pptr, u_int len) |
| { |
| const struct sflow_datagram_t *sflow_datagram; |
| const struct sflow_v6_datagram_t *sflow_v6_datagram; |
| const struct sflow_sample_header *sflow_sample; |
| |
| const u_char *tptr; |
| u_int tlen; |
| uint32_t sflow_sample_type, sflow_sample_len; |
| uint32_t nsamples; |
| uint32_t ip_version; |
| |
| ndo->ndo_protocol = "sflow"; |
| tptr = pptr; |
| tlen = len; |
| sflow_datagram = (const struct sflow_datagram_t *)pptr; |
| sflow_v6_datagram = (const struct sflow_v6_datagram_t *)pptr; |
| ip_version = GET_BE_U_4(sflow_datagram->ip_version); |
| |
| if ((len < sizeof(struct sflow_datagram_t) && (ip_version == 1)) || |
| (len < sizeof(struct sflow_v6_datagram_t) && (ip_version == 2))) { |
| ND_PRINT("sFlowv%u", GET_BE_U_4(sflow_datagram->version)); |
| ND_PRINT(" [length %u < %zu]", len, sizeof(struct sflow_datagram_t)); |
| nd_print_invalid(ndo); |
| return; |
| } |
| ND_TCHECK_SIZE(sflow_datagram); |
| |
| /* |
| * Sanity checking of the header. |
| */ |
| if (GET_BE_U_4(sflow_datagram->version) != 5) { |
| ND_PRINT("sFlow version %u packet not supported", |
| GET_BE_U_4(sflow_datagram->version)); |
| return; |
| } |
| |
| if (ndo->ndo_vflag < 1) { |
| ND_PRINT("sFlowv%u, %s agent %s, agent-id %u, length %u", |
| GET_BE_U_4(sflow_datagram->version), |
| ip_version == 1 ? "IPv4" : "IPv6", |
| ip_version == 1 ? GET_IPADDR_STRING(sflow_datagram->agent) : |
| GET_IP6ADDR_STRING( sflow_v6_datagram->agent), |
| ip_version == 1 ? GET_BE_U_4(sflow_datagram->agent_id) : |
| GET_BE_U_4(sflow_v6_datagram->agent_id), |
| len); |
| return; |
| } |
| |
| /* ok they seem to want to know everything - lets fully decode it */ |
| if (ip_version == 1) { |
| nsamples=GET_BE_U_4(sflow_datagram->samples); |
| ND_PRINT("sFlowv%u, %s agent %s, agent-id %u, seqnum %u, uptime %u, samples %u, length %u", |
| GET_BE_U_4(sflow_datagram->version), |
| "IPv4", |
| GET_IPADDR_STRING(sflow_datagram->agent), |
| GET_BE_U_4(sflow_datagram->agent_id), |
| GET_BE_U_4(sflow_datagram->seqnum), |
| GET_BE_U_4(sflow_datagram->uptime), |
| nsamples, |
| len); |
| |
| /* skip Common header */ |
| ND_LCHECK_ZU(tlen, sizeof(struct sflow_datagram_t)); |
| tptr += sizeof(struct sflow_datagram_t); |
| tlen -= sizeof(struct sflow_datagram_t); |
| } else { |
| nsamples=GET_BE_U_4(sflow_v6_datagram->samples); |
| ND_PRINT("sFlowv%u, %s agent %s, agent-id %u, seqnum %u, uptime %u, samples %u, length %u", |
| GET_BE_U_4(sflow_v6_datagram->version), |
| "IPv6", |
| GET_IP6ADDR_STRING(sflow_v6_datagram->agent), |
| GET_BE_U_4(sflow_v6_datagram->agent_id), |
| GET_BE_U_4(sflow_v6_datagram->seqnum), |
| GET_BE_U_4(sflow_v6_datagram->uptime), |
| nsamples, |
| len); |
| |
| /* skip Common header */ |
| ND_LCHECK_ZU(tlen, sizeof(struct sflow_v6_datagram_t)); |
| tptr += sizeof(struct sflow_v6_datagram_t); |
| tlen -= sizeof(struct sflow_v6_datagram_t); |
| } |
| while (nsamples > 0 && tlen > 0) { |
| sflow_sample = (const struct sflow_sample_header *)tptr; |
| |
| sflow_sample_type = (GET_BE_U_4(sflow_sample->format)&0x0FFF); |
| sflow_sample_len = GET_BE_U_4(sflow_sample->len); |
| |
| if (tlen < sizeof(struct sflow_sample_header)) |
| goto invalid; |
| |
| tptr += sizeof(struct sflow_sample_header); |
| tlen -= sizeof(struct sflow_sample_header); |
| |
| ND_PRINT("\n\t%s (%u), length %u,", |
| tok2str(sflow_format_values, "Unknown", sflow_sample_type), |
| sflow_sample_type, |
| sflow_sample_len); |
| |
| /* basic sanity check */ |
| if (sflow_sample_type == 0 || sflow_sample_len ==0) { |
| return; |
| } |
| |
| if (tlen < sflow_sample_len) |
| goto invalid; |
| |
| /* did we capture enough for fully decoding the sample ? */ |
| ND_TCHECK_LEN(tptr, sflow_sample_len); |
| |
| switch(sflow_sample_type) { |
| case SFLOW_FLOW_SAMPLE: |
| if (sflow_print_flow_sample(ndo, tptr, tlen)) |
| goto invalid; |
| break; |
| |
| case SFLOW_COUNTER_SAMPLE: |
| if (sflow_print_counter_sample(ndo, tptr,tlen)) |
| goto invalid; |
| break; |
| |
| case SFLOW_EXPANDED_FLOW_SAMPLE: |
| if (sflow_print_expanded_flow_sample(ndo, tptr, tlen)) |
| goto invalid; |
| break; |
| |
| case SFLOW_EXPANDED_COUNTER_SAMPLE: |
| if (sflow_print_expanded_counter_sample(ndo, tptr,tlen)) |
| goto invalid; |
| break; |
| |
| default: |
| if (ndo->ndo_vflag <= 1) |
| print_unknown_data(ndo, tptr, "\n\t ", sflow_sample_len); |
| break; |
| } |
| tptr += sflow_sample_len; |
| tlen -= sflow_sample_len; |
| nsamples--; |
| } |
| return; |
| |
| invalid: |
| nd_print_invalid(ndo); |
| ND_TCHECK_LEN(tptr, tlen); |
| } |
