int PfRingDevice::openSingleRxChannel(const char* deviceName, pfring** ring) { if (m_DeviceOpened) { LOG_ERROR("Device already opened"); return false; } uint32_t flags = PF_RING_PROMISC | PF_RING_HW_TIMESTAMP | PF_RING_DNA_SYMMETRIC_RSS; *ring = pfring_open(deviceName, DEFAULT_PF_RING_SNAPLEN, flags); if (*ring == NULL) { return 1; } LOG_DEBUG("pfring_open Succeeded for device [%s]", deviceName); if (getIsHwClockEnable()) { setPfRingDeviceClock(*ring); LOG_DEBUG("H/W clock set for device [%s]", deviceName); } if (pfring_enable_rss_rehash(*ring) < 0 || pfring_enable_ring(*ring) < 0) { pfring_close(*ring); return 2; } LOG_DEBUG("pfring enabled for device [%s]", deviceName); return 0; }
int add_to_pfring_bundle(pfring_bundle *bundle, pfring *ring) { if(bundle->num_sockets >= (MAX_NUM_BUNDLE_ELEMENTS-1)) return(-1); pfring_enable_ring(ring); bundle->sockets[bundle->num_sockets++] = ring; return(0); }
int pfring_bundle_add(pfring_bundle *bundle, pfring *ring) { if(bundle->num_sockets >= (MAX_NUM_BUNDLE_ELEMENTS-1)) return(-1); bundle->sockets[bundle->num_sockets] = ring; bundle->pfd[bundle->num_sockets].fd = pfring_get_selectable_fd(ring); bundle->num_sockets++; pfring_enable_ring(ring); return(0); }
int pfring_set_reflector_device(pfring *ring, char *device_name) { if((device_name == NULL) || ring->reflector_socket) return(-1); ring->reflector_socket = pfring_open(device_name, ring->caplen, PF_RING_PROMISC); if(ring->reflector_socket != NULL) { pfring_set_socket_mode(ring->reflector_socket, send_only_mode); pfring_enable_ring(ring->reflector_socket); return(0); } else return(-1); }
void cluster::_Run() { std::string thread_name = device_name + "_cluster"; prctl(PR_SET_NAME, thread_name.c_str()); int len = 2048; u_char *buffer = new u_char[len]; struct pfring_pkthdr *hdr = (pfring_pkthdr *)buffer; u_char* lpPkt = buffer + sizeof(struct pfring_pkthdr); int waitable = 1; /* 0-->non-blocking, otherwise blocking*/ //u_int8_t level = 4; /* 2 of OSI-7*/ //u_int8_t addtimestamp = 1; /* 1 --> add timetamp */ //u_int8_t addhash = 0; /* 0 --> don't add hash */ pfring_enable_ring(ring); //解码的结果集 _nic_stat_session_tuple tuple; for(;;) { int ret = pfring_recv(ring, (u_char**)&lpPkt, PF_CAP_LEN, hdr, waitable); if( ret > 0 ) { decode((uint8_t *)lpPkt, hdr->caplen); tuple.init(); fill_tuple(tuple, hdr->caplen); cluster_stat_flow(&tuple); } } }
int frame_pfring(pfring *pd, struct frame_buf *f){ fbuf = f; pfcount = 0; packet_direction direction = rx_and_tx_direction; int rc; pfring_set_direction(pd, direction); if((rc = pfring_set_socket_mode(pd, recv_only_mode)) != 0) fprintf(stderr, "pfring_set_socket_mode returned [rc=%d]\n", rc); pfring_set_application_stats(pd, "statistics not yet computed, please try again...\n"); if(pfring_enable_ring(pd) != 0){ fprintf(stderr, "unable to enable ring\n"); pfring_close(pd); return -1; } printf("capture start...\n"); pfring_loop(pd, pf_dummy_packet, (u_char *)NULL, 1); pfring_close(pd); return 0; }
long stream_pfring_open(struct stream** stptr, const struct ether_addr* addr, const char* iface, size_t buffer_size){ int ret = 0; assert(stptr); /* validate arguments */ if ( !(addr && iface) ){ return EINVAL; } /* get MTU for interface */ const int if_mtu = iface_mtu(iface); if ( if_mtu < 0 ){ return errno; } pfring_config(99); /* open pfring */ char* derp = strdup(iface); pfring* pd = pfring_open(derp, 1, 9000, 0); if ( !pd ){ return errno; } pfring_set_application_name(pd, "libcap_utils"); uint32_t version; pfring_version(pd, &version); fprintf(stderr, "Using PF_RING v.%d.%d.%d\n", (version & 0xFFFF0000) >> 16, (version & 0x0000FF00) >> 8, version & 0x000000FF); if((ret = pfring_set_direction(pd, rx_and_tx_direction)) != 0) fprintf(stderr, "pfring_set_direction returned %d (perhaps you use a direction other than rx only with DNA ?)\n", ret); if((ret = pfring_set_socket_mode(pd, recv_only_mode)) != 0) fprintf(stderr, "pfring_set_socket_mode returned [rc=%d]\n", ret); char bpfFilter[] = "ether proto 0x810"; ret = pfring_set_bpf_filter(pd, bpfFilter); if ( ret != 0 ) { fprintf(stderr, "pfring_set_bpf_filter(%s) returned %d\n", bpfFilter, ret); } else { fprintf(stderr, "Successfully set BPF filter '%s'\n", bpfFilter); } /* default buffer_size of 25*MTU */ if ( buffer_size == 0 ){ buffer_size = 250 * if_mtu; } /* ensure buffer is a multiple of MTU and can hold at least one frame */ if ( buffer_size < if_mtu ){ return ERROR_BUFFER_LENGTH; } else if ( buffer_size % if_mtu != 0 ){ return ERROR_BUFFER_MULTIPLE; } /* additional memory for the frame pointers */ size_t frames = buffer_size / if_mtu; size_t frame_offset = sizeof(char*) * frames; buffer_size += frame_offset; /* Initialize the structure */ if ( (ret = stream_alloc(stptr, PROTOCOL_ETHERNET_MULTICAST, sizeof(struct stream_pfring), buffer_size) != 0) ){ return ret; } struct stream_pfring* st = (struct stream_pfring*)*stptr; st->pd = pd; st->num_address = 0; st->if_mtu = if_mtu; memset(st->seqnum, 0, sizeof(long unsigned int) * MAX_ADDRESS); if (pfring_enable_ring(pd) != 0) { fprintf(stderr, "Unable to enable ring :-(\n"); pfring_close(pd); return(-1); } /* setup buffer pointers (see brief overview at struct declaration) */ st->num_frames = frames; st->num_packets = 0; st->read_ptr = NULL; st->base.readPos = 0; st->base.writePos = 0; for ( unsigned int i = 0; i < frames; i++ ){ st->frame[i] = st->base.buffer + frame_offset + i * if_mtu; } /* add membership to group */ if ( (ret=stream_pfring_add(&st->base, addr)) != 0 ){ return ret; } /* if ( (ret=stream_pfring_init(stptr, addr, iface, ETH_P_ALL, buffer_size)) != 0 ){ return ret; } */ st->base.type = PROTOCOL_ETHERNET_MULTICAST; st->base.FH.comment_size = 0; st->base.comment = NULL; /* callbacks */ st->base.fill_buffer = NULL; st->base.destroy = (destroy_callback)destroy; st->base.write = NULL; st->base.read = (read_callback)stream_pfring_read; return 0; }
/** * \brief Recieves packets from an interface via libpfring. * * This function recieves packets from an interface and passes * the packet on to the pfring callback function. * * \param tv pointer to ThreadVars * \param data pointer that gets cast into PfringThreadVars for ptv * \param slot slot containing task information * \retval TM_ECODE_OK on success * \retval TM_ECODE_FAILED on failure */ TmEcode ReceivePfringLoop(ThreadVars *tv, void *data, void *slot) { SCEnter(); PfringThreadVars *ptv = (PfringThreadVars *)data; Packet *p = NULL; struct pfring_pkthdr hdr; TmSlot *s = (TmSlot *)slot; time_t last_dump = 0; u_int buffer_size; u_char *pkt_buffer; ptv->slot = s->slot_next; /* we have to enable the ring here as we need to do it after all * the threads have called pfring_set_cluster(). */ int rc = pfring_enable_ring(ptv->pd); if (rc != 0) { SCLogError(SC_ERR_PF_RING_OPEN, "pfring_enable_ring failed returned %d ", rc); SCReturnInt(TM_ECODE_FAILED); } while(1) { if (suricata_ctl_flags & (SURICATA_STOP | SURICATA_KILL)) { SCReturnInt(TM_ECODE_OK); } /* make sure we have at least one packet in the packet pool, to prevent * us from alloc'ing packets at line rate */ PacketPoolWait(); p = PacketGetFromQueueOrAlloc(); if (p == NULL) { SCReturnInt(TM_ECODE_FAILED); } PKT_SET_SRC(p, PKT_SRC_WIRE); /* Some flavours of PF_RING may fail to set timestamp - see PF-RING-enabled libpcap code*/ hdr.ts.tv_sec = hdr.ts.tv_usec = 0; /* Check for Zero-copy mode */ if (ptv->flags & PFRING_FLAGS_ZERO_COPY) { buffer_size = 0; pkt_buffer = NULL; } else { buffer_size = GET_PKT_DIRECT_MAX_SIZE(p); pkt_buffer = GET_PKT_DIRECT_DATA(p); } int r = pfring_recv(ptv->pd, &pkt_buffer, buffer_size, &hdr, LIBPFRING_WAIT_FOR_INCOMING); if (likely(r == 1)) { /* profiling started before blocking pfring_recv call, so * reset it here */ PACKET_PROFILING_RESTART(p); /* Check for Zero-copy mode */ if (ptv->flags & PFRING_FLAGS_ZERO_COPY) { PacketSetData(p, pkt_buffer, hdr.caplen); } //printf("RecievePfring src %" PRIu32 " sport %" PRIu32 " dst %" PRIu32 " dstport %" PRIu32 "\n", // hdr.parsed_pkt.ipv4_src,hdr.parsed_pkt.l4_src_port, hdr.parsed_pkt.ipv4_dst,hdr.parsed_pkt.l4_dst_port); PfringProcessPacket(ptv, &hdr, p); if (TmThreadsSlotProcessPkt(ptv->tv, ptv->slot, p) != TM_ECODE_OK) { TmqhOutputPacketpool(ptv->tv, p); SCReturnInt(TM_ECODE_FAILED); } /* Trigger one dump of stats every second */ if (p->ts.tv_sec != last_dump) { PfringDumpCounters(ptv); last_dump = p->ts.tv_sec; } } else if (unlikely(r == 0)) { if (suricata_ctl_flags & (SURICATA_STOP | SURICATA_KILL)) { SCReturnInt(TM_ECODE_OK); } /* pfring didn't use the packet yet */ TmThreadsCaptureInjectPacket(tv, ptv->slot, p); } else { SCLogError(SC_ERR_PF_RING_RECV,"pfring_recv error %" PRId32 "", r); TmqhOutputPacketpool(ptv->tv, p); SCReturnInt(TM_ECODE_FAILED); } StatsSyncCountersIfSignalled(tv); } return TM_ECODE_OK; }
/** * \brief Recieves packets from an interface via libpfring. * * This function recieves packets from an interface and passes * the packet on to the pfring callback function. * * \param tv pointer to ThreadVars * \param data pointer that gets cast into PfringThreadVars for ptv * \param slot slot containing task information * \retval TM_ECODE_OK on success * \retval TM_ECODE_FAILED on failure */ TmEcode ReceivePfringLoop(ThreadVars *tv, void *data, void *slot) { SCEnter(); uint16_t packet_q_len = 0; PfringThreadVars *ptv = (PfringThreadVars *)data; Packet *p = NULL; struct pfring_pkthdr hdr; TmSlot *s = (TmSlot *)slot; time_t last_dump = 0; struct timeval current_time; ptv->slot = s->slot_next; /* we have to enable the ring here as we need to do it after all * the threads have called pfring_set_cluster(). */ #ifdef HAVE_PFRING_ENABLE int rc = pfring_enable_ring(ptv->pd); if (rc != 0) { SCLogError(SC_ERR_PF_RING_OPEN, "pfring_enable_ring failed returned %d ", rc); SCReturnInt(TM_ECODE_FAILED); } #endif /* HAVE_PFRING_ENABLE */ while(1) { if (suricata_ctl_flags & (SURICATA_STOP | SURICATA_KILL)) { SCReturnInt(TM_ECODE_OK); } /* make sure we have at least one packet in the packet pool, to prevent * us from alloc'ing packets at line rate */ do { packet_q_len = PacketPoolSize(); if (unlikely(packet_q_len == 0)) { PacketPoolWait(); } } while (packet_q_len == 0); p = PacketGetFromQueueOrAlloc(); if (p == NULL) { SCReturnInt(TM_ECODE_FAILED); } PKT_SET_SRC(p, PKT_SRC_WIRE); /* Some flavours of PF_RING may fail to set timestamp - see PF-RING-enabled libpcap code*/ hdr.ts.tv_sec = hdr.ts.tv_usec = 0; /* Depending on what compile time options are used for pfring we either return 0 or -1 on error and always 1 for success */ #ifdef HAVE_PFRING_RECV_UCHAR u_char *pkt_buffer = GET_PKT_DIRECT_DATA(p); u_int buffer_size = GET_PKT_DIRECT_MAX_SIZE(p); int r = pfring_recv(ptv->pd, &pkt_buffer, buffer_size, &hdr, LIBPFRING_WAIT_FOR_INCOMING); /* Check for Zero-copy if buffer size is zero */ if (buffer_size == 0) { PacketSetData(p, pkt_buffer, hdr.caplen); } #else int r = pfring_recv(ptv->pd, (char *)GET_PKT_DIRECT_DATA(p), (u_int)GET_PKT_DIRECT_MAX_SIZE(p), &hdr, LIBPFRING_WAIT_FOR_INCOMING); #endif /* HAVE_PFRING_RECV_UCHAR */ if (r == 1) { //printf("RecievePfring src %" PRIu32 " sport %" PRIu32 " dst %" PRIu32 " dstport %" PRIu32 "\n", // hdr.parsed_pkt.ipv4_src,hdr.parsed_pkt.l4_src_port, hdr.parsed_pkt.ipv4_dst,hdr.parsed_pkt.l4_dst_port); PfringProcessPacket(ptv, &hdr, p); if (TmThreadsSlotProcessPkt(ptv->tv, ptv->slot, p) != TM_ECODE_OK) { TmqhOutputPacketpool(ptv->tv, p); SCReturnInt(TM_ECODE_FAILED); } /* Trigger one dump of stats every second */ TimeGet(¤t_time); if (current_time.tv_sec != last_dump) { PfringDumpCounters(ptv); last_dump = current_time.tv_sec; } } else { SCLogError(SC_ERR_PF_RING_RECV,"pfring_recv error %" PRId32 "", r); TmqhOutputPacketpool(ptv->tv, p); SCReturnInt(TM_ECODE_FAILED); } SCPerfSyncCountersIfSignalled(tv); } return TM_ECODE_OK; }
static int pfring_daq_acquire(void *handle, int cnt, DAQ_Analysis_Func_t callback, #if (DAQ_API_VERSION >= 0x00010002) DAQ_Meta_Func_t metaback, #endif void *user) { Pfring_Context_t *context =(Pfring_Context_t *) handle; int ret = 0, i, current_ring_idx = context->num_devices - 1, rx_ring_idx; struct pollfd pfd[DAQ_PF_RING_MAX_NUM_DEVICES]; hash_filtering_rule hash_rule; memset(&hash_rule, 0, sizeof(hash_rule)); context->analysis_func = callback; context->breakloop = 0; for (i = 0; i < context->num_devices; i++) pfring_enable_ring(context->ring_handles[i]); while((!context->breakloop) && ((cnt == -1) || (cnt > 0))) { struct pfring_pkthdr phdr; DAQ_PktHdr_t hdr; DAQ_Verdict verdict; memset(&phdr, 0, sizeof(phdr)); if(pfring_daq_reload_requested) pfring_daq_reload(context); for (i = 0; i < context->num_devices; i++) { current_ring_idx = (current_ring_idx + 1) % context->num_devices; ret = pfring_recv(context->ring_handles[current_ring_idx], &context->pkt_buffer, 0, &phdr, 0 /* Dont't wait */); if (ret > 0) break; } if(ret <= 0) { /* No packet to read: let's poll */ int rc; for (i = 0; i < context->num_devices; i++) { pfd[i].fd = pfring_get_selectable_fd(context->ring_handles[i]); pfd[i].events = POLLIN; pfd[i].revents = 0; } rc = poll(pfd, context->num_devices, context->timeout); if(rc < 0) { if(errno == EINTR) break; DPE(context->errbuf, "%s: Poll failed: %s(%d)", __FUNCTION__, strerror(errno), errno); return DAQ_ERROR; } } else { hdr.caplen = phdr.caplen; hdr.pktlen = phdr.len; hdr.ts = phdr.ts; #if (DAQ_API_VERSION >= 0x00010002) hdr.ingress_index = phdr.extended_hdr.if_index; hdr.egress_index = -1; hdr.ingress_group = -1; hdr.egress_group = -1; #else hdr.device_index = phdr.extended_hdr.if_index; #endif hdr.flags = 0; rx_ring_idx = current_ring_idx; context->stats.packets_received++; verdict = context->analysis_func(user, &hdr,(u_char*)context->pkt_buffer); if(verdict >= MAX_DAQ_VERDICT) verdict = DAQ_VERDICT_PASS; if (phdr.extended_hdr.parsed_pkt.eth_type == 0x0806 /* ARP */ ) verdict = DAQ_VERDICT_PASS; switch(verdict) { case DAQ_VERDICT_BLACKLIST: /* Block the packet and block all future packets in the same flow systemwide. */ if (context->use_kernel_filters) { pfring_parse_pkt(context->pkt_buffer, &phdr, 4, 0, 0); /* or use pfring_recv_parsed() to force parsing. */ hash_rule.rule_id = context->filter_count++; hash_rule.vlan_id = phdr.extended_hdr.parsed_pkt.vlan_id; hash_rule.proto = phdr.extended_hdr.parsed_pkt.l3_proto; memcpy(&hash_rule.host_peer_a, &phdr.extended_hdr.parsed_pkt.ipv4_src, sizeof(ip_addr)); memcpy(&hash_rule.host_peer_b, &phdr.extended_hdr.parsed_pkt.ipv4_dst, sizeof(ip_addr)); hash_rule.port_peer_a = phdr.extended_hdr.parsed_pkt.l4_src_port; hash_rule.port_peer_b = phdr.extended_hdr.parsed_pkt.l4_dst_port; hash_rule.plugin_action.plugin_id = NO_PLUGIN_ID; if (context->mode == DAQ_MODE_PASSIVE && context->num_reflector_devices > rx_ring_idx) { /* lowlevelbridge ON */ hash_rule.rule_action = reflect_packet_and_stop_rule_evaluation; snprintf(hash_rule.reflector_device_name, REFLECTOR_NAME_LEN, "%s", context->reflector_devices[rx_ring_idx]); } else { hash_rule.rule_action = dont_forward_packet_and_stop_rule_evaluation; } pfring_handle_hash_filtering_rule(context->ring_handles[rx_ring_idx], &hash_rule, 1 /* add_rule */); /* Purge rules idle (i.e. with no packet matching) for more than 1h */ pfring_purge_idle_hash_rules(context->ring_handles[rx_ring_idx], context->idle_rules_timeout); #if DEBUG printf("[DEBUG] %d.%d.%d.%d:%d -> %d.%d.%d.%d:%d Verdict=%d Action=%d\n", hash_rule.host_peer_a.v4 >> 24 & 0xFF, hash_rule.host_peer_a.v4 >> 16 & 0xFF, hash_rule.host_peer_a.v4 >> 8 & 0xFF, hash_rule.host_peer_a.v4 >> 0 & 0xFF, hash_rule.port_peer_a & 0xFFFF, hash_rule.host_peer_b.v4 >> 24 & 0xFF, hash_rule.host_peer_b.v4 >> 16 & 0xFF, hash_rule.host_peer_b.v4 >> 8 & 0xFF, hash_rule.host_peer_b.v4 >> 0 & 0xFF, hash_rule.port_peer_b & 0xFFFF, verdict, hash_rule.rule_action); #endif } break; case DAQ_VERDICT_WHITELIST: /* Pass the packet and fastpath all future packets in the same flow systemwide. */ case DAQ_VERDICT_IGNORE: /* Pass the packet and fastpath all future packets in the same flow for this application. */ /* Setting a rule for reflectiong packets when lowlevelbridge is ON could be an optimization here, * but we can't set "forward" (reflector won't work) or "reflect" (packets reflected twice) hash rules */ case DAQ_VERDICT_PASS: /* Pass the packet */ case DAQ_VERDICT_REPLACE: /* Pass a packet that has been modified in-place.(No resizing allowed!) */ if (context->mode == DAQ_MODE_INLINE) { pfring_daq_send_packet(context, context->ring_handles[rx_ring_idx ^ 0x1], hdr.caplen, context->ring_handles[rx_ring_idx], context->ifindexes[rx_ring_idx ^ 0x1]); } break; case DAQ_VERDICT_BLOCK: /* Block the packet. */ /* Nothing to do really */ break; case MAX_DAQ_VERDICT: /* No way we can reach this point */ break; } context->stats.verdicts[verdict]++; if(cnt > 0) cnt--; } }
int main(int argc, char* argv[]) { pfring *a_ring, *b_ring; char *a_dev = NULL, *b_dev = NULL, c; u_int8_t verbose = 0, use_pfring_send = 0; int a_ifindex, b_ifindex; int bind_core = -1; u_int16_t watermark = 1; while((c = getopt(argc,argv, "ha:b:c:fvpg:w:")) != -1) { switch(c) { case 'h': printHelp(); return 0; break; case 'a': a_dev = strdup(optarg); break; case 'b': b_dev = strdup(optarg); break; case 'p': use_pfring_send = 1; break; case 'v': verbose = 1; break; case 'g': bind_core = atoi(optarg); break; case 'w': watermark = atoi(optarg); break; } } if ((!a_dev) || (!b_dev)) { printf("You must specify two devices!\n"); return -1; } if(strcmp(a_dev, b_dev) == 0) { printf("Bridge devices must be different!\n"); return -1; } /* Device A */ if((a_ring = pfring_open(a_dev, MAX_PKT_LEN, PF_RING_PROMISC | PF_RING_LONG_HEADER | (use_pfring_send ? 0 : PF_RING_RX_PACKET_BOUNCE)) ) == NULL) { printf("pfring_open error for %s [%s]\n", a_dev, strerror(errno)); return(-1); } pfring_set_application_name(a_ring, "pfbridge-a"); pfring_set_direction(a_ring, rx_only_direction); pfring_set_socket_mode(a_ring, recv_only_mode); pfring_set_poll_watermark(a_ring, watermark); pfring_get_bound_device_ifindex(a_ring, &a_ifindex); /* Device B */ if((b_ring = pfring_open(b_dev, MAX_PKT_LEN, PF_RING_PROMISC|PF_RING_LONG_HEADER)) == NULL) { printf("pfring_open error for %s [%s]\n", b_dev, strerror(errno)); pfring_close(a_ring); return(-1); } pfring_set_application_name(b_ring, "pfbridge-b"); pfring_set_socket_mode(b_ring, send_only_mode); pfring_get_bound_device_ifindex(b_ring, &b_ifindex); /* Enable Sockets */ if (pfring_enable_ring(a_ring) != 0) { printf("Unable enabling ring 'a' :-(\n"); pfring_close(a_ring); pfring_close(b_ring); return(-1); } if(use_pfring_send) { if (pfring_enable_ring(b_ring)) { printf("Unable enabling ring 'b' :-(\n"); pfring_close(a_ring); pfring_close(b_ring); return(-1); } } else { pfring_close(b_ring); } signal(SIGALRM, my_sigalarm); alarm(1); if(bind_core >= 0) bind2core(bind_core); while(1) { u_char *buffer; struct pfring_pkthdr hdr; if(pfring_recv(a_ring, &buffer, 0, &hdr, 1) > 0) { int rc; if(use_pfring_send) { rc = pfring_send(b_ring, (char *) buffer, hdr.caplen, 1); if(rc < 0) printf("pfring_send(caplen=%u <= mtu=%u?) error %d\n", hdr.caplen, b_ring->mtu_len, rc); else if(verbose) printf("Forwarded %d bytes packet\n", hdr.len); } else { rc = pfring_send_last_rx_packet(a_ring, b_ifindex); if(rc < 0) printf("pfring_send_last_rx_packet() error %d\n", rc); else if(verbose) printf("Forwarded %d bytes packet\n", hdr.len); } if(rc >= 0) num_sent++; } } pfring_close(a_ring); if(use_pfring_send) pfring_close(b_ring); return(0); }
int main() { char* dev = "zc:eth3"; // We could pool device in multiple threads unsigned int num_threads = 1; bool promisc = true; /* This flag manages packet parser for extended_hdr */ bool use_extended_pkt_header = true; bool enable_hw_timestamp = false; bool dont_strip_timestamps = false; u_int32_t flags = 0; if (num_threads > 1) flags |= PF_RING_REENTRANT; if (use_extended_pkt_header) flags |= PF_RING_LONG_HEADER; if (promisc) flags |= PF_RING_PROMISC; if (enable_hw_timestamp) flags |= PF_RING_HW_TIMESTAMP; if (!dont_strip_timestamps) flags |= PF_RING_STRIP_HW_TIMESTAMP; // if (!we_use_pf_ring_in_kernel_parser) { // flags != PF_RING_DO_NOT_PARSE; //} // flags |= PF_RING_DNA_SYMMETRIC_RSS; /* Note that symmetric RSS is ignored by non-DNA drivers // */ // use default value from pfcount.c unsigned int snaplen = 128; pfring* pf_ring_descr = pfring_open(dev, snaplen, flags); if (pf_ring_descr == NULL) { std::cout << "pfring_open error: " << strerror(errno) << " (pf_ring not loaded or perhaps you use quick mode and have already a socket bound to: " << dev << ")"; return false; } u_int32_t version; // Set spplication name in /proc int pfring_set_application_name_result = pfring_set_application_name(pf_ring_descr, (char*)"fastnetmon"); if (pfring_set_application_name_result != 0) { std::cout << "Can't set programm name for PF_RING: pfring_set_application_name"; } pfring_version(pf_ring_descr, &version); int pfring_set_socket_mode_result = pfring_set_socket_mode(pf_ring_descr, recv_only_mode); // enable ring if (pfring_enable_ring(pf_ring_descr) != 0) { std::cout << "Unable to enable ring :-("; pfring_close(pf_ring_descr); return false; } u_int8_t wait_for_packet = 1; pfring_loop(pf_ring_descr, parse_packet_pf_ring, (u_char*)NULL, wait_for_packet); }
bool PfRingDevice::openMultiRxChannels(uint8_t numOfRxChannelsToOpen, ChannelDistribution dist) { if (m_DeviceOpened) { LOG_ERROR("Device already opened"); return false; } m_NumOfOpenedRxChannels = 0; if (numOfRxChannelsToOpen > MAX_NUM_RX_CHANNELS) { LOG_ERROR("Cannot open more than [%d] channels", MAX_NUM_RX_CHANNELS); return false; } uint32_t flags = PF_RING_PROMISC | PF_RING_REENTRANT | PF_RING_HW_TIMESTAMP | PF_RING_DNA_SYMMETRIC_RSS; uint8_t numOfRxChannelsOnNIC = getTotalNumOfRxChannels(); LOG_DEBUG("NIC has %d RX channels", numOfRxChannelsOnNIC); uint8_t numOfRingsPerRxChannel = numOfRxChannelsToOpen / numOfRxChannelsOnNIC; uint8_t remainderRings = numOfRxChannelsToOpen % numOfRxChannelsOnNIC; cluster_type clusterType = (dist == RoundRobin) ? cluster_round_robin : cluster_per_flow; int ringsOpen = 0; for (uint8_t channelId = 0; channelId < numOfRxChannelsOnNIC; channelId++) { // no more channels to open if (numOfRingsPerRxChannel == 0 && remainderRings == 0) break; char ringName[32]; snprintf(ringName, sizeof(ringName), "%s@%d", m_DeviceName, channelId); // open numOfRingsPerRxChannel rings per RX channel for (uint8_t ringId = 0; ringId < numOfRingsPerRxChannel; ringId++) { m_PfRingDescriptors[ringsOpen] = pfring_open(ringName, DEFAULT_PF_RING_SNAPLEN, flags); if (m_PfRingDescriptors[ringsOpen] == NULL) { LOG_ERROR("Couldn't open a ring on channel [%d]", channelId); break; } // setting a cluster for all rings in the same channel to enable hashing between them if (pfring_set_cluster(m_PfRingDescriptors[ringsOpen], channelId+1, clusterType) < 0) { LOG_ERROR("Couldn't set ring [%d] in channel [%d] to the cluster [%d]", ringId, channelId, channelId+1); break; } ringsOpen++; } // open one more ring if remainder > 0 if (remainderRings > 0) { m_PfRingDescriptors[ringsOpen] = pfring_open(ringName, DEFAULT_PF_RING_SNAPLEN, flags); if (m_PfRingDescriptors[ringsOpen] == NULL) { LOG_ERROR("Couldn't open a ring on channel [%d]", channelId); break; } // setting a cluster for all rings in the same channel to enable hashing between them if (pfring_set_cluster(m_PfRingDescriptors[ringsOpen], channelId, clusterType) < 0) { LOG_ERROR("Couldn't set ring [%d] in channel [%d] to the cluster [%d]", numOfRingsPerRxChannel+1, channelId, channelId); break; } ringsOpen++; remainderRings--; LOG_DEBUG("Opened %d rings on channel [%d]", numOfRingsPerRxChannel+1, channelId); } else LOG_DEBUG("Opened %d rings on channel [%d]", numOfRingsPerRxChannel, channelId); } if (ringsOpen < numOfRxChannelsToOpen) { for (uint8_t i = 0; i < ringsOpen; i++) pfring_close(m_PfRingDescriptors[i]); return false; } if (getIsHwClockEnable()) { for (int i = 0; i < ringsOpen; i++) { if (setPfRingDeviceClock(m_PfRingDescriptors[i])) LOG_DEBUG("H/W clock set for device [%s]", m_DeviceName); } } // enable all rings for (int i = 0; i < ringsOpen; i++) { if (pfring_enable_rss_rehash(m_PfRingDescriptors[i]) < 0 || pfring_enable_ring(m_PfRingDescriptors[i]) < 0) { LOG_ERROR("Unable to enable ring [%d] for device [%s]", i, m_DeviceName); // close all pfring's that were enabled until now for (int j = 0; j <ringsOpen; j++) pfring_close(m_PfRingDescriptors[j]); return false; } } m_NumOfOpenedRxChannels = ringsOpen; m_DeviceOpened = true; return true; }
int main(int argc, char* argv[]) { char *device = NULL, c, *bind_mask = NULL; int snaplen = DEFAULT_SNAPLEN, rc, watermark = 0, rehash_rss = 0; packet_direction direction = rx_only_direction; long i; u_int16_t cpu_percentage = 0, poll_duration = 0; u_int32_t version; u_int32_t flags = 0; startTime.tv_sec = 0; thiszone = gmt2local(0); numCPU = sysconf( _SC_NPROCESSORS_ONLN ); memset(thread_core_affinity, -1, sizeof(thread_core_affinity)); while((c = getopt(argc,argv,"hi:l:mvae:w:b:rp:g:")) != -1) { switch(c) { case 'h': printHelp(); return(0); break; case 'a': wait_for_packet = 0; break; case 'e': switch(atoi(optarg)) { case rx_and_tx_direction: case rx_only_direction: case tx_only_direction: direction = atoi(optarg); break; } break; case 'l': snaplen = atoi(optarg); break; case 'i': device = strdup(optarg); break; case 'm': use_extended_pkt_header = 1; break; case 'v': verbose = 1; break; case 'w': watermark = atoi(optarg); break; case 'b': cpu_percentage = atoi(optarg); break; case 'r': rehash_rss = 1; break; case 'p': poll_duration = atoi(optarg); break; case 'g': bind_mask = strdup(optarg); break; } } if(verbose) watermark = 1; if(device == NULL) device = DEFAULT_DEVICE; printf("Capturing from %s\n", device); flags |= PF_RING_PROMISC; /* hardcode: promisc=1 */ #if 0 flags |= PF_RING_DNA_FIXED_RSS_Q_0; #else flags |= PF_RING_DNA_SYMMETRIC_RSS; /* Note that symmetric RSS is ignored by non-DNA drivers */ #endif if(use_extended_pkt_header) flags |= PF_RING_LONG_HEADER; num_channels = pfring_open_multichannel(device, snaplen, flags, ring); if(num_channels <= 0) { fprintf(stderr, "pfring_open_multichannel() returned %d [%s]\n", num_channels, strerror(errno)); return(-1); } if (num_channels > MAX_NUM_THREADS) { printf("WARNING: Too many channels (%d), using %d channels\n", num_channels, MAX_NUM_THREADS); num_channels = MAX_NUM_THREADS; } else if (num_channels > numCPU) { printf("WARNING: More channels (%d) than available cores (%d), using %d channels\n", num_channels, numCPU, numCPU); num_channels = numCPU; } else { printf("Found %d channels\n", num_channels); } if(bind_mask != NULL) { char *id = strtok(bind_mask, ":"); int idx = 0; while(id != NULL) { thread_core_affinity[idx++] = atoi(id) % numCPU; if(idx >= num_channels) break; id = strtok(NULL, ":"); } } pfring_version(ring[0], &version); printf("Using PF_RING v.%d.%d.%d\n", (version & 0xFFFF0000) >> 16, (version & 0x0000FF00) >> 8, version & 0x000000FF); for(i=0; i<num_channels; i++) { char buf[32]; snprintf(buf, sizeof(buf), "pfcount_multichannel-thread %ld", i); pfring_set_application_name(ring[i], buf); if((rc = pfring_set_direction(ring[i], direction)) != 0) fprintf(stderr, "pfring_set_direction returned %d [direction=%d] (you can't capture TX with DNA)\n", rc, direction); if((rc = pfring_set_socket_mode(ring[i], recv_only_mode)) != 0) fprintf(stderr, "pfring_set_socket_mode returned [rc=%d]\n", rc); if(watermark > 0) { if((rc = pfring_set_poll_watermark(ring[i], watermark)) != 0) fprintf(stderr, "pfring_set_poll_watermark returned [rc=%d][watermark=%d]\n", rc, watermark); } #if 0 setup_steering(ring[0], "192.168.30.207", -1); /* UTDF */ setup_steering(ring[0], "224.0.1.92", 1); setup_steering(ring[0], "224.0.1.94", 1); setup_steering(ring[0], "224.0.1.96", 1); /* BATS */ setup_steering(ring[0], "224.0.62.2", 2); /* default: should go to channel 0 */ #endif if(rehash_rss) pfring_enable_rss_rehash(ring[i]); if(poll_duration > 0) pfring_set_poll_duration(ring[i], poll_duration); pfring_enable_ring(ring[i]); pthread_create(&pd_thread[i], NULL, packet_consumer_thread, (void*)i); usleep(500); } if(cpu_percentage > 0) { if(cpu_percentage > 99) cpu_percentage = 99; pfring_config(cpu_percentage); } signal(SIGINT, sigproc); signal(SIGTERM, sigproc); signal(SIGINT, sigproc); if(!verbose) { signal(SIGALRM, my_sigalarm); alarm(ALARM_SLEEP); } for(i=0; i<num_channels; i++) { pthread_join(pd_thread[i], NULL); pfring_close(ring[i]); } return(0); }
int main(int argc, char* argv[]) { char c, *pcap_in = NULL, mac_address[6]; int promisc, i, verbose = 0, active_poll = 0, reforge_mac = 0; u_int mac_a, mac_b, mac_c, mac_d, mac_e, mac_f; char buffer[1500]; int send_len = 60; u_int32_t num = 1; int bind_core = -1; u_int16_t cpu_percentage = 0; double gbit_s = 0, td, pps; ticks tick_start = 0, tick_delta = 0; ticks hz = 0; struct packet *tosend; while((c = getopt(argc,argv,"hi:n:g:l:af:r:vm:" #if 0 "b:" #endif )) != -1) { switch(c) { case 'h': printHelp(); break; case 'i': in_dev = strdup(optarg); break; case 'f': pcap_in = strdup(optarg); break; case 'n': num = atoi(optarg); break; case 'g': bind_core = atoi(optarg); break; case 'l': send_len = atoi(optarg); break; case 'v': verbose = 1; break; case 'a': active_poll = 1; break; case 'r': sscanf(optarg, "%lf", &gbit_s); break; #if 0 case 'b': cpu_percentage = atoi(optarg); #endif break; case 'm': if(sscanf(optarg, "%02X:%02X:%02X:%02X:%02X:%02X", &mac_a, &mac_b, &mac_c, &mac_d, &mac_e, &mac_f) != 6) { printf("Invalid MAC address format (XX:XX:XX:XX:XX:XX)\n"); return(0); } else { reforge_mac = 1; mac_address[0] = mac_a, mac_address[1] = mac_b, mac_address[2] = mac_c; mac_address[3] = mac_d, mac_address[4] = mac_e, mac_address[5] = mac_f; } break; } } if(in_dev == NULL) printHelp(); printf("Sending packets on %s\n", in_dev); /* hardcode: promisc=1, to_ms=500 */ promisc = 1; pd = pfring_open(in_dev, promisc, 1500, 0); if(pd == NULL) { printf("pfring_open %s error\n", in_dev); return(-1); } else { u_int32_t version; pfring_set_application_name(pd, "pfdnasend"); pfring_version(pd, &version); printf("Using PF_RING v.%d.%d.%d\n", (version & 0xFFFF0000) >> 16, (version & 0x0000FF00) >> 8, version & 0x000000FF); } signal(SIGINT, sigproc); signal(SIGTERM, sigproc); signal(SIGINT, sigproc); if(send_len < 60) send_len = 60; if(gbit_s > 0) { /* cumputing usleep delay */ tick_start = getticks(); usleep(1); tick_delta = getticks() - tick_start; /* cumputing CPU freq */ tick_start = getticks(); usleep(1001); hz = (getticks() - tick_start - tick_delta) * 1000 /*kHz -> Hz*/; printf("Estimated CPU freq: %llu Hz\n", hz); /* computing max rate */ pps = ((gbit_s * 1000000000) / 8 /*byte*/) / (8 /*Preamble*/ + send_len + 4 /*CRC*/ + 12 /*IFG*/); td = (double)(hz / pps); tick_delta = (ticks)td; printf("Number of %d-byte Packet Per Second at %.2f Gbit/s: %.2f\n", (send_len + 4 /*CRC*/), gbit_s, pps); } if(pcap_in) { char ebuf[256]; u_char *pkt; struct pcap_pkthdr *h; pcap_t *pt = pcap_open_offline(pcap_in, ebuf); u_int num_pcap_pkts = 0; if(pt) { struct packet *last = NULL; while(1) { struct packet *p; int rc = pcap_next_ex(pt, &h, (const u_char**)&pkt); if(rc <= 0) break; p = (struct packet*)malloc(sizeof(struct packet)); if(p) { p->len = h->caplen; p->next = NULL; p->pkt = (char*)malloc(p->len); if(p->pkt == NULL) { printf("Not enough memory\n"); break; } else { memcpy(p->pkt, pkt, p->len); if(reforge_mac) memcpy(p->pkt, mac_address, 6); } if(last) { last->next = p; last = p; } else pkt_head = p, last = p; } else { printf("Not enough memory\n"); break; } if(verbose) printf("Read %d bytes packet from pcap file %s\n", p->len, pcap_in); num_pcap_pkts++; } /* while */ pcap_close(pt); printf("Read %d packets from pcap file %s\n", num_pcap_pkts, pcap_in); last->next = pkt_head; /* Loop */ num *= num_pcap_pkts; } else { printf("Unable to open file %s\n", pcap_in); pfring_close(pd); return(-1); } } else { struct packet *p; for(i=0; i<send_len; i++) buffer[i] = i; if(reforge_mac) memcpy(buffer, mac_address, 6); p = (struct packet*)malloc(sizeof(struct packet)); if(p) { p->len = send_len; p->next = p; /* Loop */ p->pkt = (char*)malloc(p->len); memcpy(p->pkt, buffer, send_len); pkt_head = p; } } if(bind_core >= 0) bind2core(bind_core); if(wait_for_packet && (cpu_percentage > 0)) { if(cpu_percentage > 99) cpu_percentage = 99; pfring_config(cpu_percentage); } if(!verbose) { signal(SIGALRM, my_sigalarm); alarm(1); } gettimeofday(&startTime, NULL); memcpy(&lastTime, &startTime, sizeof(startTime)); if(gbit_s > 0) tick_start = getticks(); tosend = pkt_head; i = 0; pfring_set_direction(pd, tx_only_direction); if(pfring_enable_ring(pd) != 0) { printf("Unable to enable ring :-(\n"); pfring_close(pd); return(-1); } while(!num || i < num) { int rc; redo: rc = pfring_send(pd, tosend->pkt, tosend->len, 0 /* Don't flush (it does PF_RING automatically) */); if(verbose) printf("[%d] pfring_send(%d) returned %d\n", i, tosend->len, rc); if(rc == -1) { /* Not enough space in buffer */ if(gbit_s == 0) { if(!active_poll) { if(bind_core >= 0) usleep(1); else pfring_poll(pd, 0); } } else { /* Just waste some time */ while((getticks() - tick_start) < (num_pkt_good_sent * tick_delta)) ; } goto redo; } else num_pkt_good_sent++, num_bytes_good_sent += tosend->len+24 /* 8 Preamble + 4 CRC + 12 IFG */, tosend = tosend->next; if(num > 0) i++; } /* for */ print_stats(0); pfring_close(pd); return(0); }
int main(int argc, char* argv[]) { pfring *a_ring, *b_ring; char *a_dev = NULL, *b_dev = NULL, c; u_int8_t verbose = 0, use_pfring_send = 0; int a_ifindex, b_ifindex; while((c = getopt(argc,argv, "ha:b:c:fvp")) != -1) { switch(c) { case 'h': printHelp(); return 0; break; case 'a': a_dev = strdup(optarg); break; case 'b': b_dev = strdup(optarg); break; case 'p': use_pfring_send = 1; break; case 'v': verbose = 1; break; } } if ((!a_dev) || (!b_dev)) { printf("You must specify two devices!\n"); return -1; } if(strcmp(a_dev, b_dev) == 0) { printf("Bridge devices must be different!\n"); return -1; } /* open devices */ if((a_ring = pfring_open(a_dev, 1500, PF_RING_PROMISC|PF_RING_LONG_HEADER)) == NULL) { printf("pfring_open error for %s [%s]\n", a_dev, strerror(errno)); return(-1); } else { pfring_set_application_name(a_ring, "pfbridge-a"); pfring_set_direction(a_ring, rx_and_tx_direction); pfring_get_bound_device_ifindex(a_ring, &a_ifindex); } if((b_ring = pfring_open(b_dev, 1500, PF_RING_PROMISC|PF_RING_LONG_HEADER)) == NULL) { printf("pfring_open error for %s [%s]\n", b_dev, strerror(errno)); pfring_close(a_ring); return(-1); } else { pfring_set_application_name(b_ring, "pfbridge-b"); pfring_set_direction(b_ring, rx_and_tx_direction); pfring_get_bound_device_ifindex(b_ring, &b_ifindex); } /* Enable rings */ pfring_enable_ring(a_ring); if(use_pfring_send) pfring_enable_ring(b_ring); else pfring_close(b_ring); signal(SIGALRM, my_sigalarm); alarm(1); while(1) { u_char *buffer; struct pfring_pkthdr hdr; if(pfring_recv(a_ring, &buffer, 0, &hdr, 1) > 0) { int rc; if(use_pfring_send) { rc = pfring_send(b_ring, (char*)buffer, hdr.caplen, 1); if(rc < 0) printf("pfring_send_last_rx_packet() error %d\n", rc); else if(verbose) printf("Forwarded %d bytes packet\n", hdr.len); } else { rc = pfring_send_last_rx_packet(a_ring, b_ifindex); if(rc < 0) printf("pfring_send_last_rx_packet() error %d\n", rc); else if(verbose) printf("Forwarded %d bytes packet\n", hdr.len); } if(rc >= 0) num_sent++; } } pfring_close(a_ring); if(use_pfring_send) pfring_close(b_ring); return(0); }
int main(int argc, char *argv[]) { char *dev; // The device to sniff on char errbuf[PCAP_ERRBUF_SIZE]; // Error string if any operation fails struct bpf_program fp; // The compiled filter (not used) char filter_exp[] = "port 23"; // The filter expression (not used) bpf_u_int32 mask; // Our subnet mask bpf_u_int32 net; // Our network ID struct pfring_pkthdr header; // The header that pfring gives us u_char *packet; // The actual packet int flags,num_pkts=0; // Flags to pass for opening pfring instance, number of packets captured memset(&header,0,sizeof(header)); signal(SIGINT,sigproc); dev = argv[1]; // Set the device manually to arg[1] printf("\nCapture device: %s\n", dev); makefilename(); flags = PF_RING_PROMISC; if((handle = pfring_open(dev, 1520, flags)) == NULL) { //MAX_CAPLEN instead of 1520 printf("pfring_open error"); return(-1); } else { pfring_set_application_name(handle, "packetcapture"); } pfring_enable_ring(handle); dumper = pcap_dump_open(pcap_open_dead(DLT_EN10MB, 16384), filename); //16384 is MTU if(dumper == NULL) { printf("Unable to create dump file %s\n", filename); return(-1); } while(1) { if(pfring_recv(handle, &packet, 0, &header, 1 ) > 0) { //wait for packet, blocking call if(num_pkts>=PACKETS_PER_FILE) { num_pkts = 0; pcap_dump_close(dumper); filenumber++; makefilename(); dumper = pcap_dump_open(pcap_open_dead(DLT_EN10MB, 16384), filename); if(dumper == NULL) { printf("Unable to create dump file %s\n", filename); exit(1); } } pcap_dump((u_char*)dumper, (struct pcap_pkthdr*)&header, packet); fprintf(stdout, "."); fflush(stdout); num_pkts++; } } pcap_dump_close(dumper); pfring_close(handle); return 0; }
int main(int argc, char* argv[]) { char c, *pcap_in = NULL; int i, verbose = 0, active_poll = 0, disable_zero_copy = 0; int use_zero_copy_tx = 0; u_int mac_a, mac_b, mac_c, mac_d, mac_e, mac_f; char buffer[9000]; u_int32_t num_to_send = 0; int bind_core = -1; u_int16_t cpu_percentage = 0; double gbit_s = 0, td, pps; ticks tick_start = 0, tick_delta = 0; ticks hz = 0; struct packet *tosend; u_int num_tx_slots = 0; int num_balanced_pkts = 1, watermark = 0; u_int num_pcap_pkts = 0; while((c = getopt(argc,argv,"b:hi:n:g:l:af:r:vm:w:zx:" #if 0 "b:" #endif )) != -1) { switch(c) { case 'b': num_balanced_pkts = atoi(optarg); break; case 'h': printHelp(); break; case 'i': in_dev = strdup(optarg); break; case 'f': pcap_in = strdup(optarg); break; case 'n': num_to_send = atoi(optarg); break; case 'g': bind_core = atoi(optarg); break; case 'l': send_len = atoi(optarg); break; case 'x': if_index = atoi(optarg); break; case 'v': verbose = 1; break; case 'a': active_poll = 1; break; case 'r': sscanf(optarg, "%lf", &gbit_s); break; #if 0 case 'b': cpu_percentage = atoi(optarg); #endif break; case 'm': if(sscanf(optarg, "%02X:%02X:%02X:%02X:%02X:%02X", &mac_a, &mac_b, &mac_c, &mac_d, &mac_e, &mac_f) != 6) { printf("Invalid MAC address format (XX:XX:XX:XX:XX:XX)\n"); return(0); } else { reforge_mac = 1; mac_address[0] = mac_a, mac_address[1] = mac_b, mac_address[2] = mac_c; mac_address[3] = mac_d, mac_address[4] = mac_e, mac_address[5] = mac_f; } break; case 'w': watermark = atoi(optarg); if(watermark < 1) watermark = 1; break; case 'z': disable_zero_copy = 1; break; } } if((in_dev == NULL) || (num_balanced_pkts < 1)) printHelp(); printf("Sending packets on %s\n", in_dev); pd = pfring_open(in_dev, 1500, 0 /* PF_RING_PROMISC */); if(pd == NULL) { printf("pfring_open %s error [%s]\n", in_dev, strerror(errno)); return(-1); } else { u_int32_t version; pfring_set_application_name(pd, "pfdnasend"); pfring_version(pd, &version); printf("Using PF_RING v.%d.%d.%d\n", (version & 0xFFFF0000) >> 16, (version & 0x0000FF00) >> 8, version & 0x000000FF); } if (!pd->send && pd->send_ifindex && if_index == -1) { printf("Please use -x <if index>\n"); return -1; } if(watermark > 0) { int rc; if((rc = pfring_set_tx_watermark(pd, watermark)) < 0) printf("pfring_set_tx_watermark() failed [rc=%d]\n", rc); } signal(SIGINT, sigproc); signal(SIGTERM, sigproc); signal(SIGINT, sigproc); if(send_len < 60) send_len = 60; if(gbit_s != 0) { /* cumputing usleep delay */ tick_start = getticks(); usleep(1); tick_delta = getticks() - tick_start; /* cumputing CPU freq */ tick_start = getticks(); usleep(1001); hz = (getticks() - tick_start - tick_delta) * 1000 /*kHz -> Hz*/; printf("Estimated CPU freq: %lu Hz\n", (long unsigned int)hz); } if(pcap_in) { char ebuf[256]; u_char *pkt; struct pcap_pkthdr *h; pcap_t *pt = pcap_open_offline(pcap_in, ebuf); struct timeval beginning = { 0, 0 }; int avg_send_len = 0; if(pt) { struct packet *last = NULL; while(1) { struct packet *p; int rc = pcap_next_ex(pt, &h, (const u_char**)&pkt); if(rc <= 0) break; if (num_pcap_pkts == 0) { beginning.tv_sec = h->ts.tv_sec; beginning.tv_usec = h->ts.tv_usec; } p = (struct packet*)malloc(sizeof(struct packet)); if(p) { p->len = h->caplen; p->ticks_from_beginning = (((h->ts.tv_sec - beginning.tv_sec) * 1000000) + (h->ts.tv_usec - beginning.tv_usec)) * hz / 1000000; p->next = NULL; p->pkt = (char*)malloc(p->len); if(p->pkt == NULL) { printf("Not enough memory\n"); break; } else { memcpy(p->pkt, pkt, p->len); if(reforge_mac) memcpy(p->pkt, mac_address, 6); } if(last) { last->next = p; last = p; } else pkt_head = p, last = p; } else { printf("Not enough memory\n"); break; } if(verbose) printf("Read %d bytes packet from pcap file %s [%lu.%lu Secs = %lu ticks@%luhz from beginning]\n", p->len, pcap_in, h->ts.tv_sec - beginning.tv_sec, h->ts.tv_usec - beginning.tv_usec, (long unsigned int)p->ticks_from_beginning, (long unsigned int)hz); avg_send_len += p->len; num_pcap_pkts++; } /* while */ avg_send_len /= num_pcap_pkts; pcap_close(pt); printf("Read %d packets from pcap file %s\n", num_pcap_pkts, pcap_in); last->next = pkt_head; /* Loop */ send_len = avg_send_len; } else { printf("Unable to open file %s\n", pcap_in); pfring_close(pd); return(-1); } } else { struct packet *p = NULL, *last = NULL; for (i = 0; i < num_balanced_pkts; i++) { forge_udp_packet(buffer, i); p = (struct packet *) malloc(sizeof(struct packet)); if(p) { if (i == 0) pkt_head = p; p->len = send_len; p->ticks_from_beginning = 0; p->next = pkt_head; p->pkt = (char*)malloc(p->len); if (p->pkt == NULL) { printf("Not enough memory\n"); break; } memcpy(p->pkt, buffer, send_len); if (last != NULL) last->next = p; last = p; } } } if(gbit_s > 0) { /* computing max rate */ pps = ((gbit_s * 1000000000) / 8 /*byte*/) / (8 /*Preamble*/ + send_len + 4 /*CRC*/ + 12 /*IFG*/); td = (double)(hz / pps); tick_delta = (ticks)td; printf("Number of %d-byte Packet Per Second at %.2f Gbit/s: %.2f\n", (send_len + 4 /*CRC*/), gbit_s, pps); } if(bind_core >= 0) bind2core(bind_core); if(wait_for_packet && (cpu_percentage > 0)) { if(cpu_percentage > 99) cpu_percentage = 99; pfring_config(cpu_percentage); } if(!verbose) { signal(SIGALRM, my_sigalarm); alarm(1); } gettimeofday(&startTime, NULL); memcpy(&lastTime, &startTime, sizeof(startTime)); pfring_set_socket_mode(pd, send_only_mode); if(pfring_enable_ring(pd) != 0) { printf("Unable to enable ring :-(\n"); pfring_close(pd); return(-1); } use_zero_copy_tx = 0; if((!disable_zero_copy) && (pd->dna_get_num_tx_slots != NULL) && (pd->dna_get_next_free_tx_slot != NULL) && (pd->dna_copy_tx_packet_into_slot != NULL)) { tosend = pkt_head; num_tx_slots = pd->dna_get_num_tx_slots(pd); if(num_tx_slots > 0 && (((num_to_send > 0) && (num_to_send <= num_tx_slots)) || ( pcap_in && (num_pcap_pkts <= num_tx_slots) && (num_tx_slots % num_pcap_pkts == 0)) || (!pcap_in && (num_balanced_pkts <= num_tx_slots) && (num_tx_slots % num_balanced_pkts == 0)))) { int ret; u_int first_free_slot = pd->dna_get_next_free_tx_slot(pd); for(i=0; i<num_tx_slots; i++) { ret = pfring_copy_tx_packet_into_slot(pd, (first_free_slot+i)%num_tx_slots, tosend->pkt, tosend->len); if(ret < 0) break; tosend = tosend->next; } use_zero_copy_tx = 1; printf("Using zero-copy TX\n"); } else { printf("NOT using zero-copy: TX ring size (%u) is not a multiple of the number of unique packets to send (%u)\n", num_tx_slots, pcap_in ? num_pcap_pkts : num_balanced_pkts); } } else { if (!disable_zero_copy) printf("NOT using zero-copy: not supported by the driver\n"); } tosend = pkt_head; i = 0; if(gbit_s != 0) tick_start = getticks(); while((num_to_send == 0) || (i < num_to_send)) { int rc; redo: if (if_index != -1) rc = pfring_send_ifindex(pd, tosend->pkt, tosend->len, gbit_s < 0 ? 1 : 0 /* Don't flush (it does PF_RING automatically) */, if_index); else if(use_zero_copy_tx) /* We pre-filled the TX slots */ rc = pfring_send(pd, NULL, tosend->len, gbit_s < 0 ? 1 : 0 /* Don't flush (it does PF_RING automatically) */); else rc = pfring_send(pd, tosend->pkt, tosend->len, gbit_s < 0 ? 1 : 0 /* Don't flush (it does PF_RING automatically) */); if(verbose) printf("[%d] pfring_send(%d) returned %d\n", i, tosend->len, rc); if(rc == PF_RING_ERROR_INVALID_ARGUMENT) { printf("Attempting to send invalid packet [len: %u][MTU: %u]%s\n", tosend->len, pd->mtu_len, if_index != -1 ? " or using a wrong interface id" : ""); } else if(rc < 0) { /* Not enough space in buffer */ if(!active_poll) { #if 1 usleep(1); #else if(bind_core >= 0) usleep(1); else pfring_poll(pd, 0); //sched_yield(); #endif } goto redo; } num_pkt_good_sent++; num_bytes_good_sent += tosend->len + 24 /* 8 Preamble + 4 CRC + 12 IFG */; tosend = tosend->next; if (use_zero_copy_tx && (num_pkt_good_sent == num_tx_slots)) tosend = pkt_head; if(gbit_s > 0) { /* rate set */ while((getticks() - tick_start) < (num_pkt_good_sent * tick_delta)) ; } else if (gbit_s < 0) { /* real pcap rate */ if (tosend->ticks_from_beginning == 0) tick_start = getticks(); /* first packet, resetting time */ while((getticks() - tick_start) < tosend->ticks_from_beginning) ; } if(num_to_send > 0) i++; } /* for */ print_stats(0); pfring_close(pd); return(0); }