/* * Copyright (c) 2009-2014, The Regents of the University of California, * through Lawrence Berkeley National Laboratory (subject to receipt of any * required approvals from the U.S. Dept. of Energy). All rights reserved. * * This code is distributed under a BSD style license, see the LICENSE file * for complete information. */ #define _GNU_SOURCE #define __USE_GNU #include "iperf_config.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if defined(HAVE_CPUSET_SETAFFINITY) #include #include #endif /* HAVE_CPUSET_SETAFFINITY */ #include "net.h" #include "iperf.h" #include "iperf_api.h" #include "iperf_udp.h" #include "iperf_tcp.h" #if defined(HAVE_SCTP) #include "iperf_sctp.h" #endif /* HAVE_SCTP */ #include "timer.h" #include "cjson.h" #include "units.h" #include "tcp_window_size.h" #include "iperf_util.h" #include "locale.h" /* Forwards. */ static int send_parameters(struct iperf_test *test); static int get_parameters(struct iperf_test *test); static int send_results(struct iperf_test *test); static int get_results(struct iperf_test *test); static int diskfile_send(struct iperf_stream *sp); static int diskfile_recv(struct iperf_stream *sp); static int JSON_write(int fd, cJSON *json); static void print_interval_results(struct iperf_test *test, struct iperf_stream *sp, cJSON *json_interval_streams); static cJSON *JSON_read(int fd); /*************************** Print usage functions ****************************/ void usage() { fputs(usage_shortstr, stderr); } void usage_long() { fprintf(stderr, usage_longstr, UDP_RATE / (1024*1024), DURATION, DEFAULT_TCP_BLKSIZE / 1024, DEFAULT_UDP_BLKSIZE / 1024); } void warning(char *str) { fprintf(stderr, "warning: %s\n", str); } /************** Getter routines for some fields inside iperf_test *************/ int iperf_get_verbose(struct iperf_test *ipt) { return ipt->verbose; } int iperf_get_control_socket(struct iperf_test *ipt) { return ipt->ctrl_sck; } int iperf_get_test_omit(struct iperf_test *ipt) { return ipt->omit; } int iperf_get_test_duration(struct iperf_test *ipt) { return ipt->duration; } uint64_t iperf_get_test_rate(struct iperf_test *ipt) { return ipt->settings->rate; } int iperf_get_test_burst(struct iperf_test *ipt) { return ipt->settings->burst; } char iperf_get_test_role(struct iperf_test *ipt) { return ipt->role; } int iperf_get_test_reverse(struct iperf_test *ipt) { return ipt->reverse; } int iperf_get_test_blksize(struct iperf_test *ipt) { return ipt->settings->blksize; } FILE * iperf_get_test_outfile (struct iperf_test *ipt) { return ipt->outfile; } int iperf_get_test_socket_bufsize(struct iperf_test *ipt) { return ipt->settings->socket_bufsize; } double iperf_get_test_reporter_interval(struct iperf_test *ipt) { return ipt->reporter_interval; } double iperf_get_test_stats_interval(struct iperf_test *ipt) { return ipt->stats_interval; } int iperf_get_test_num_streams(struct iperf_test *ipt) { return ipt->num_streams; } int iperf_get_test_server_port(struct iperf_test *ipt) { return ipt->server_port; } char* iperf_get_test_server_hostname(struct iperf_test *ipt) { return ipt->server_hostname; } int iperf_get_test_protocol_id(struct iperf_test *ipt) { return ipt->protocol->id; } int iperf_get_test_json_output(struct iperf_test *ipt) { return ipt->json_output; } char * iperf_get_test_json_output_string(struct iperf_test *ipt) { return ipt->json_output_string; } int iperf_get_test_zerocopy(struct iperf_test *ipt) { return ipt->zerocopy; } char iperf_get_test_unit_format(struct iperf_test *ipt) { return ipt->settings->unit_format; } /************** Setter routines for some fields inside iperf_test *************/ void iperf_set_verbose(struct iperf_test *ipt, int verbose) { ipt->verbose = verbose; } void iperf_set_control_socket(struct iperf_test *ipt, int ctrl_sck) { ipt->ctrl_sck = ctrl_sck; } void iperf_set_test_omit(struct iperf_test *ipt, int omit) { ipt->omit = omit; } void iperf_set_test_duration(struct iperf_test *ipt, int duration) { ipt->duration = duration; } void iperf_set_test_reporter_interval(struct iperf_test *ipt, double reporter_interval) { ipt->reporter_interval = reporter_interval; } void iperf_set_test_stats_interval(struct iperf_test *ipt, double stats_interval) { ipt->stats_interval = stats_interval; } void iperf_set_test_state(struct iperf_test *ipt, signed char state) { ipt->state = state; } void iperf_set_test_blksize(struct iperf_test *ipt, int blksize) { ipt->settings->blksize = blksize; } void iperf_set_test_rate(struct iperf_test *ipt, uint64_t rate) { ipt->settings->rate = rate; } void iperf_set_test_burst(struct iperf_test *ipt, int burst) { ipt->settings->burst = burst; } void iperf_set_test_server_port(struct iperf_test *ipt, int server_port) { ipt->server_port = server_port; } void iperf_set_test_socket_bufsize(struct iperf_test *ipt, int socket_bufsize) { ipt->settings->socket_bufsize = socket_bufsize; } void iperf_set_test_num_streams(struct iperf_test *ipt, int num_streams) { ipt->num_streams = num_streams; } static void check_sender_has_retransmits(struct iperf_test *ipt) { if (ipt->sender && ipt->protocol->id == Ptcp && has_tcpinfo_retransmits()) ipt->sender_has_retransmits = 1; else ipt->sender_has_retransmits = 0; } void iperf_set_test_role(struct iperf_test *ipt, char role) { ipt->role = role; if (role == 'c') ipt->sender = 1; else if (role == 's') ipt->sender = 0; if (ipt->reverse) ipt->sender = ! ipt->sender; check_sender_has_retransmits(ipt); } void iperf_set_test_server_hostname(struct iperf_test *ipt, char *server_hostname) { ipt->server_hostname = strdup(server_hostname); } void iperf_set_test_reverse(struct iperf_test *ipt, int reverse) { ipt->reverse = reverse; if (ipt->reverse) ipt->sender = ! ipt->sender; check_sender_has_retransmits(ipt); } void iperf_set_test_json_output(struct iperf_test *ipt, int json_output) { ipt->json_output = json_output; } int iperf_has_zerocopy( void ) { return has_sendfile(); } void iperf_set_test_zerocopy(struct iperf_test *ipt, int zerocopy) { ipt->zerocopy = zerocopy; } void iperf_set_test_unit_format(struct iperf_test *ipt, char unit_format) { ipt->settings->unit_format = unit_format; } /********************** Get/set test protocol structure ***********************/ struct protocol * get_protocol(struct iperf_test *test, int prot_id) { struct protocol *prot; SLIST_FOREACH(prot, &test->protocols, protocols) { if (prot->id == prot_id) break; } if (prot == NULL) i_errno = IEPROTOCOL; return prot; } int set_protocol(struct iperf_test *test, int prot_id) { struct protocol *prot = NULL; SLIST_FOREACH(prot, &test->protocols, protocols) { if (prot->id == prot_id) { test->protocol = prot; check_sender_has_retransmits(test); return 0; } } i_errno = IEPROTOCOL; return -1; } /************************** Iperf callback functions **************************/ void iperf_on_new_stream(struct iperf_stream *sp) { connect_msg(sp); } void iperf_on_test_start(struct iperf_test *test) { if (test->json_output) { cJSON_AddItemToObject(test->json_start, "test_start", iperf_json_printf("protocol: %s num_streams: %d blksize: %d omit: %d duration: %d bytes: %d blocks: %d", test->protocol->name, (int64_t) test->num_streams, (int64_t) test->settings->blksize, (int64_t) test->omit, (int64_t) test->duration, (int64_t) test->settings->bytes, (int64_t) test->settings->blocks)); } else { if (test->verbose) { if (test->settings->bytes) iprintf(test, test_start_bytes, test->protocol->name, test->num_streams, test->settings->blksize, test->omit, test->settings->bytes); else if (test->settings->blocks) iprintf(test, test_start_blocks, test->protocol->name, test->num_streams, test->settings->blksize, test->omit, test->settings->blocks); else iprintf(test, test_start_time, test->protocol->name, test->num_streams, test->settings->blksize, test->omit, test->duration); } } } /* This converts an IPv6 string address from IPv4-mapped format into regular ** old IPv4 format, which is easier on the eyes of network veterans. ** ** If the v6 address is not v4-mapped it is left alone. */ static void mapped_v4_to_regular_v4(char *str) { char *prefix = "::ffff:"; int prefix_len; prefix_len = strlen(prefix); if (strncmp(str, prefix, prefix_len) == 0) { int str_len = strlen(str); memmove(str, str + prefix_len, str_len - prefix_len + 1); } } void iperf_on_connect(struct iperf_test *test) { time_t now_secs; const char* rfc1123_fmt = "%a, %d %b %Y %H:%M:%S GMT"; char now_str[100]; char ipr[INET6_ADDRSTRLEN]; int port; struct sockaddr_storage sa; struct sockaddr_in *sa_inP; struct sockaddr_in6 *sa_in6P; socklen_t len; int opt; now_secs = time((time_t*) 0); (void) strftime(now_str, sizeof(now_str), rfc1123_fmt, gmtime(&now_secs)); if (test->json_output) cJSON_AddItemToObject(test->json_start, "timestamp", iperf_json_printf("time: %s timesecs: %d", now_str, (int64_t) now_secs)); else if (test->verbose) iprintf(test, report_time, now_str); if (test->role == 'c') { if (test->json_output) cJSON_AddItemToObject(test->json_start, "connecting_to", iperf_json_printf("host: %s port: %d", test->server_hostname, (int64_t) test->server_port)); else { iprintf(test, report_connecting, test->server_hostname, test->server_port); if (test->reverse) iprintf(test, report_reverse, test->server_hostname); } } else { len = sizeof(sa); getpeername(test->ctrl_sck, (struct sockaddr *) &sa, &len); if (getsockdomain(test->ctrl_sck) == AF_INET) { sa_inP = (struct sockaddr_in *) &sa; inet_ntop(AF_INET, &sa_inP->sin_addr, ipr, sizeof(ipr)); port = ntohs(sa_inP->sin_port); } else { sa_in6P = (struct sockaddr_in6 *) &sa; inet_ntop(AF_INET6, &sa_in6P->sin6_addr, ipr, sizeof(ipr)); port = ntohs(sa_in6P->sin6_port); } mapped_v4_to_regular_v4(ipr); if (test->json_output) cJSON_AddItemToObject(test->json_start, "accepted_connection", iperf_json_printf("host: %s port: %d", ipr, (int64_t) port)); else iprintf(test, report_accepted, ipr, port); } if (test->json_output) { cJSON_AddStringToObject(test->json_start, "cookie", test->cookie); if (test->protocol->id == SOCK_STREAM) { if (test->settings->mss) cJSON_AddIntToObject(test->json_start, "tcp_mss", test->settings->mss); else { len = sizeof(opt); getsockopt(test->ctrl_sck, IPPROTO_TCP, TCP_MAXSEG, &opt, &len); cJSON_AddIntToObject(test->json_start, "tcp_mss_default", opt); } } } else if (test->verbose) { iprintf(test, report_cookie, test->cookie); if (test->protocol->id == SOCK_STREAM) { if (test->settings->mss) iprintf(test, " TCP MSS: %d\n", test->settings->mss); else { len = sizeof(opt); getsockopt(test->ctrl_sck, IPPROTO_TCP, TCP_MAXSEG, &opt, &len); iprintf(test, " TCP MSS: %d (default)\n", opt); } } } } void iperf_on_test_finish(struct iperf_test *test) { } /******************************************************************************/ int iperf_parse_arguments(struct iperf_test *test, int argc, char **argv) { static struct option longopts[] = { {"port", required_argument, NULL, 'p'}, {"format", required_argument, NULL, 'f'}, {"interval", required_argument, NULL, 'i'}, {"daemon", no_argument, NULL, 'D'}, {"verbose", no_argument, NULL, 'V'}, {"json", no_argument, NULL, 'J'}, {"version", no_argument, NULL, 'v'}, {"server", no_argument, NULL, 's'}, {"client", required_argument, NULL, 'c'}, {"udp", no_argument, NULL, 'u'}, {"bandwidth", required_argument, NULL, 'b'}, {"time", required_argument, NULL, 't'}, {"bytes", required_argument, NULL, 'n'}, {"blockcount", required_argument, NULL, 'k'}, {"length", required_argument, NULL, 'l'}, {"parallel", required_argument, NULL, 'P'}, {"reverse", no_argument, NULL, 'R'}, {"window", required_argument, NULL, 'w'}, {"bind", required_argument, NULL, 'B'}, {"set-mss", required_argument, NULL, 'M'}, {"no-delay", no_argument, NULL, 'N'}, {"version4", no_argument, NULL, '4'}, {"version6", no_argument, NULL, '6'}, {"tos", required_argument, NULL, 'S'}, #if defined(HAVE_FLOWLABEL) {"flowlabel", required_argument, NULL, 'L'}, #endif /* HAVE_FLOWLABEL */ {"zerocopy", no_argument, NULL, 'Z'}, {"omit", required_argument, NULL, 'O'}, {"file", required_argument, NULL, 'F'}, #if defined(HAVE_CPU_AFFINITY) {"affinity", required_argument, NULL, 'A'}, #endif /* HAVE_CPU_AFFINITY */ {"title", required_argument, NULL, 'T'}, #if defined(HAVE_TCP_CONGESTION) {"congestion", required_argument, NULL, 'C'}, {"linux-congestion", required_argument, NULL, 'C'}, #endif /* HAVE_TCP_CONGESTION */ #if defined(HAVE_SCTP) {"sctp", no_argument, NULL, OPT_SCTP}, #endif {"pidfile", required_argument, NULL, 'I'}, {"logfile", required_argument, NULL, OPT_LOGFILE}, {"debug", no_argument, NULL, 'd'}, {"help", no_argument, NULL, 'h'}, {NULL, 0, NULL, 0} }; int flag; int blksize; int server_flag, client_flag, rate_flag, duration_flag; #if defined(HAVE_CPU_AFFINITY) char* comma; #endif /* HAVE_CPU_AFFINITY */ char* slash; blksize = 0; server_flag = client_flag = rate_flag = duration_flag = 0; while ((flag = getopt_long(argc, argv, "p:f:i:DVJvsc:ub:t:n:k:l:P:Rw:B:M:N46S:L:ZO:F:A:T:C:dI:h", longopts, NULL)) != -1) { switch (flag) { case 'p': test->server_port = atoi(optarg); break; case 'f': test->settings->unit_format = *optarg; break; case 'i': /* XXX: could potentially want separate stat collection and reporting intervals, but just set them to be the same for now */ test->stats_interval = test->reporter_interval = atof(optarg); if ((test->stats_interval < MIN_INTERVAL || test->stats_interval > MAX_INTERVAL) && test->stats_interval != 0) { i_errno = IEINTERVAL; return -1; } break; case 'D': test->daemon = 1; server_flag = 1; break; case 'V': test->verbose = 1; break; case 'J': test->json_output = 1; break; case 'v': printf("%s\n%s\n%s\n", version, get_system_info(), get_optional_features()); exit(0); case 's': if (test->role == 'c') { i_errno = IESERVCLIENT; return -1; } iperf_set_test_role(test, 's'); break; case 'c': if (test->role == 's') { i_errno = IESERVCLIENT; return -1; } iperf_set_test_role(test, 'c'); iperf_set_test_server_hostname(test, optarg); break; case 'u': set_protocol(test, Pudp); client_flag = 1; break; case OPT_SCTP: #if defined(HAVE_SCTP) set_protocol(test, Psctp); client_flag = 1; #else /* HAVE_SCTP */ i_errno = IEUNIMP; return -1; #endif /* HAVE_SCTP */ break; case 'b': slash = strchr(optarg, '/'); if (slash) { *slash = '\0'; ++slash; test->settings->burst = atoi(slash); if (test->settings->burst <= 0 || test->settings->burst > MAX_BURST) { i_errno = IEBURST; return -1; } } test->settings->rate = unit_atof(optarg); rate_flag = 1; client_flag = 1; break; case 't': test->duration = atoi(optarg); if (test->duration > MAX_TIME) { i_errno = IEDURATION; return -1; } duration_flag = 1; client_flag = 1; break; case 'n': test->settings->bytes = unit_atoi(optarg); client_flag = 1; break; case 'k': test->settings->blocks = unit_atoi(optarg); client_flag = 1; break; case 'l': blksize = unit_atoi(optarg); client_flag = 1; break; case 'P': test->num_streams = atoi(optarg); if (test->num_streams > MAX_STREAMS) { i_errno = IENUMSTREAMS; return -1; } client_flag = 1; break; case 'R': iperf_set_test_reverse(test, 1); client_flag = 1; break; case 'w': // XXX: This is a socket buffer, not specific to TCP test->settings->socket_bufsize = unit_atof(optarg); if (test->settings->socket_bufsize > MAX_TCP_BUFFER) { i_errno = IEBUFSIZE; return -1; } client_flag = 1; break; case 'B': test->bind_address = strdup(optarg); break; case 'M': test->settings->mss = atoi(optarg); if (test->settings->mss > MAX_MSS) { i_errno = IEMSS; return -1; } client_flag = 1; break; case 'N': test->no_delay = 1; client_flag = 1; break; case '4': test->settings->domain = AF_INET; break; case '6': test->settings->domain = AF_INET6; break; case 'S': test->settings->tos = strtol(optarg, NULL, 0); client_flag = 1; break; case 'L': #if defined(HAVE_FLOWLABEL) test->settings->flowlabel = strtol(optarg, NULL, 0); if (test->settings->flowlabel < 1 || test->settings->flowlabel > 0xfffff) { i_errno = IESETFLOW; return -1; } client_flag = 1; #else /* HAVE_FLOWLABEL */ i_errno = IEUNIMP; return -1; #endif /* HAVE_FLOWLABEL */ break; case 'Z': if (!has_sendfile()) { i_errno = IENOSENDFILE; return -1; } test->zerocopy = 1; client_flag = 1; break; case 'O': test->omit = atoi(optarg); if (test->omit < 0 || test->omit > 60) { i_errno = IEOMIT; return -1; } client_flag = 1; break; case 'F': test->diskfile_name = optarg; break; case 'A': #if defined(HAVE_CPU_AFFINITY) test->affinity = atoi(optarg); if (test->affinity < 0 || test->affinity > 1024) { i_errno = IEAFFINITY; return -1; } comma = strchr(optarg, ','); if (comma != NULL) { test->server_affinity = atoi(comma+1); if (test->server_affinity < 0 || test->server_affinity > 1024) { i_errno = IEAFFINITY; return -1; } client_flag = 1; } #else /* HAVE_CPU_AFFINITY */ i_errno = IEUNIMP; return -1; #endif /* HAVE_CPU_AFFINITY */ break; case 'T': test->title = strdup(optarg); client_flag = 1; break; case 'C': #if defined(HAVE_TCP_CONGESTION) test->congestion = strdup(optarg); client_flag = 1; #else /* HAVE_TCP_CONGESTION */ i_errno = IEUNIMP; return -1; #endif /* HAVE_TCP_CONGESTION */ break; case 'd': test->debug = 1; break; case 'I': test->pidfile = strdup(optarg); server_flag = 1; break; case OPT_LOGFILE: test->logfile = strdup(optarg); break; case 'h': default: usage_long(); exit(1); } } if (test->debug) { printf("fubar\n"); } /* Set logging to a file if specified, otherwise use the default (stdout) */ if (test->logfile) { test->outfile = fopen(test->logfile, "a+"); if (test->outfile == NULL) { i_errno = IELOGFILE; return -1; } } /* Check flag / role compatibility. */ if (test->role == 'c' && server_flag) { i_errno = IESERVERONLY; return -1; } if (test->role == 's' && client_flag) { i_errno = IECLIENTONLY; return -1; } if (blksize == 0) { if (test->protocol->id == Pudp) blksize = DEFAULT_UDP_BLKSIZE; else if (test->protocol->id == Psctp) blksize = DEFAULT_SCTP_BLKSIZE; else blksize = DEFAULT_TCP_BLKSIZE; } if (blksize <= 0 || blksize > MAX_BLOCKSIZE) { i_errno = IEBLOCKSIZE; return -1; } test->settings->blksize = blksize; if (!rate_flag) test->settings->rate = test->protocol->id == Pudp ? UDP_RATE : 0; if ((test->settings->bytes != 0 || test->settings->blocks != 0) && ! duration_flag) test->duration = 0; /* Disallow specifying multiple test end conditions. The code actually ** works just fine without this prohibition. As soon as any one of the ** three possible end conditions is met, the test ends. So this check ** could be removed if desired. */ if ((duration_flag && test->settings->bytes != 0) || (duration_flag && test->settings->blocks != 0) || (test->settings->bytes != 0 && test->settings->blocks != 0)) { i_errno = IEENDCONDITIONS; return -1; } /* For subsequent calls to getopt */ #ifdef __APPLE__ optreset = 1; #endif optind = 0; if ((test->role != 'c') && (test->role != 's')) { i_errno = IENOROLE; return -1; } return 0; } int iperf_set_send_state(struct iperf_test *test, signed char state) { test->state = state; if (Nwrite(test->ctrl_sck, (char*) &state, sizeof(state), Ptcp) < 0) { i_errno = IESENDMESSAGE; return -1; } return 0; } void iperf_check_throttle(struct iperf_stream *sp, struct timeval *nowP) { double seconds; uint64_t bits_per_second; if (sp->test->done) return; seconds = timeval_diff(&sp->result->start_time, nowP); bits_per_second = sp->result->bytes_sent * 8 / seconds; if (bits_per_second < sp->test->settings->rate) { sp->green_light = 1; FD_SET(sp->socket, &sp->test->write_set); } else { sp->green_light = 0; FD_CLR(sp->socket, &sp->test->write_set); } } int iperf_send(struct iperf_test *test, fd_set *write_setP) { register int multisend, r; register struct iperf_stream *sp; struct timeval now; /* Can we do multisend mode? */ if (test->settings->burst != 0) multisend = test->settings->burst; else if (test->settings->rate == 0) multisend = test->multisend; else multisend = 1; /* nope */ for (; multisend > 0; --multisend) { if (test->settings->rate != 0 && test->settings->burst == 0) gettimeofday(&now, NULL); SLIST_FOREACH(sp, &test->streams, streams) { if (sp->green_light && (write_setP == NULL || FD_ISSET(sp->socket, write_setP))) { if ((r = sp->snd(sp)) < 0) { if (r == NET_SOFTERROR) break; i_errno = IESTREAMWRITE; return r; } test->bytes_sent += r; ++test->blocks_sent; if (test->settings->rate != 0 && test->settings->burst == 0) iperf_check_throttle(sp, &now); if (multisend > 1 && test->settings->bytes != 0 && test->bytes_sent >= test->settings->bytes) break; if (multisend > 1 && test->settings->blocks != 0 && test->blocks_sent >= test->settings->blocks) break; } } } if (test->settings->burst != 0) { gettimeofday(&now, NULL); SLIST_FOREACH(sp, &test->streams, streams) iperf_check_throttle(sp, &now); } if (write_setP != NULL) SLIST_FOREACH(sp, &test->streams, streams) if (FD_ISSET(sp->socket, write_setP)) FD_CLR(sp->socket, write_setP); return 0; } int iperf_recv(struct iperf_test *test, fd_set *read_setP) { int r; struct iperf_stream *sp; SLIST_FOREACH(sp, &test->streams, streams) { if (FD_ISSET(sp->socket, read_setP)) { if ((r = sp->rcv(sp)) < 0) { i_errno = IESTREAMREAD; return r; } test->bytes_sent += r; ++test->blocks_sent; FD_CLR(sp->socket, read_setP); } } return 0; } int iperf_init_test(struct iperf_test *test) { struct timeval now; struct iperf_stream *sp; if (test->protocol->init) { if (test->protocol->init(test) < 0) return -1; } /* Init each stream. */ if (gettimeofday(&now, NULL) < 0) { i_errno = IEINITTEST; return -1; } SLIST_FOREACH(sp, &test->streams, streams) { sp->result->start_time = now; } if (test->on_test_start) test->on_test_start(test); return 0; } static void send_timer_proc(TimerClientData client_data, struct timeval *nowP) { struct iperf_stream *sp = client_data.p; /* All we do here is set or clear the flag saying that this stream may ** be sent to. The actual sending gets done in the send proc, after ** checking the flag. */ iperf_check_throttle(sp, nowP); } int iperf_create_send_timers(struct iperf_test * test) { struct timeval now; struct iperf_stream *sp; TimerClientData cd; if (gettimeofday(&now, NULL) < 0) { i_errno = IEINITTEST; return -1; } SLIST_FOREACH(sp, &test->streams, streams) { sp->green_light = 1; if (test->settings->rate != 0) { cd.p = sp; sp->send_timer = tmr_create((struct timeval*) 0, send_timer_proc, cd, 100000L, 1); /* (Repeat every tenth second - arbitrary often value.) */ if (sp->send_timer == NULL) { i_errno = IEINITTEST; return -1; } } } return 0; } /** * iperf_exchange_parameters - handles the param_Exchange part for client * */ int iperf_exchange_parameters(struct iperf_test *test) { int s; int32_t err; if (test->role == 'c') { if (send_parameters(test) < 0) return -1; } else { if (get_parameters(test) < 0) return -1; if ((s = test->protocol->listen(test)) < 0) { if (iperf_set_send_state(test, SERVER_ERROR) != 0) return -1; err = htonl(i_errno); if (Nwrite(test->ctrl_sck, (char*) &err, sizeof(err), Ptcp) < 0) { i_errno = IECTRLWRITE; return -1; } err = htonl(errno); if (Nwrite(test->ctrl_sck, (char*) &err, sizeof(err), Ptcp) < 0) { i_errno = IECTRLWRITE; return -1; } return -1; } FD_SET(s, &test->read_set); test->max_fd = (s > test->max_fd) ? s : test->max_fd; test->prot_listener = s; // Send the control message to create streams and start the test if (iperf_set_send_state(test, CREATE_STREAMS) != 0) return -1; } return 0; } /*************************************************************/ int iperf_exchange_results(struct iperf_test *test) { if (test->role == 'c') { /* Send results to server. */ if (send_results(test) < 0) return -1; /* Get server results. */ if (get_results(test) < 0) return -1; } else { /* Get client results. */ if (get_results(test) < 0) return -1; /* Send results to client. */ if (send_results(test) < 0) return -1; } return 0; } /*************************************************************/ static int send_parameters(struct iperf_test *test) { int r = 0; cJSON *j; j = cJSON_CreateObject(); if (j == NULL) { i_errno = IESENDPARAMS; r = -1; } else { if (test->protocol->id == Ptcp) cJSON_AddTrueToObject(j, "tcp"); else if (test->protocol->id == Pudp) cJSON_AddTrueToObject(j, "udp"); else if (test->protocol->id == Psctp) cJSON_AddTrueToObject(j, "sctp"); cJSON_AddIntToObject(j, "omit", test->omit); if (test->server_affinity != -1) cJSON_AddIntToObject(j, "server_affinity", test->server_affinity); if (test->duration) cJSON_AddIntToObject(j, "time", test->duration); if (test->settings->bytes) cJSON_AddIntToObject(j, "num", test->settings->bytes); if (test->settings->blocks) cJSON_AddIntToObject(j, "blockcount", test->settings->blocks); if (test->settings->mss) cJSON_AddIntToObject(j, "MSS", test->settings->mss); if (test->no_delay) cJSON_AddTrueToObject(j, "nodelay"); cJSON_AddIntToObject(j, "parallel", test->num_streams); if (test->reverse) cJSON_AddTrueToObject(j, "reverse"); if (test->settings->socket_bufsize) cJSON_AddIntToObject(j, "window", test->settings->socket_bufsize); if (test->settings->blksize) cJSON_AddIntToObject(j, "len", test->settings->blksize); if (test->settings->rate) cJSON_AddIntToObject(j, "bandwidth", test->settings->rate); if (test->settings->burst) cJSON_AddIntToObject(j, "burst", test->settings->burst); if (test->settings->tos) cJSON_AddIntToObject(j, "TOS", test->settings->tos); if (test->settings->flowlabel) cJSON_AddIntToObject(j, "flowlabel", test->settings->flowlabel); if (test->title) cJSON_AddStringToObject(j, "title", test->title); if (test->congestion) cJSON_AddStringToObject(j, "congestion", test->congestion); if (JSON_write(test->ctrl_sck, j) < 0) { i_errno = IESENDPARAMS; r = -1; } cJSON_Delete(j); } return r; } /*************************************************************/ static int get_parameters(struct iperf_test *test) { int r = 0; cJSON *j; cJSON *j_p; j = JSON_read(test->ctrl_sck); if (j == NULL) { i_errno = IERECVPARAMS; r = -1; } else { if ((j_p = cJSON_GetObjectItem(j, "tcp")) != NULL) set_protocol(test, Ptcp); if ((j_p = cJSON_GetObjectItem(j, "udp")) != NULL) set_protocol(test, Pudp); if ((j_p = cJSON_GetObjectItem(j, "sctp")) != NULL) set_protocol(test, Psctp); if ((j_p = cJSON_GetObjectItem(j, "omit")) != NULL) test->omit = j_p->valueint; if ((j_p = cJSON_GetObjectItem(j, "server_affinity")) != NULL) test->server_affinity = j_p->valueint; if ((j_p = cJSON_GetObjectItem(j, "time")) != NULL) test->duration = j_p->valueint; if ((j_p = cJSON_GetObjectItem(j, "num")) != NULL) test->settings->bytes = j_p->valueint; if ((j_p = cJSON_GetObjectItem(j, "blockcount")) != NULL) test->settings->blocks = j_p->valueint; if ((j_p = cJSON_GetObjectItem(j, "MSS")) != NULL) test->settings->mss = j_p->valueint; if ((j_p = cJSON_GetObjectItem(j, "nodelay")) != NULL) test->no_delay = 1; if ((j_p = cJSON_GetObjectItem(j, "parallel")) != NULL) test->num_streams = j_p->valueint; if ((j_p = cJSON_GetObjectItem(j, "reverse")) != NULL) iperf_set_test_reverse(test, 1); if ((j_p = cJSON_GetObjectItem(j, "window")) != NULL) test->settings->socket_bufsize = j_p->valueint; if ((j_p = cJSON_GetObjectItem(j, "len")) != NULL) test->settings->blksize = j_p->valueint; if ((j_p = cJSON_GetObjectItem(j, "bandwidth")) != NULL) test->settings->rate = j_p->valueint; if ((j_p = cJSON_GetObjectItem(j, "burst")) != NULL) test->settings->burst = j_p->valueint; if ((j_p = cJSON_GetObjectItem(j, "TOS")) != NULL) test->settings->tos = j_p->valueint; if ((j_p = cJSON_GetObjectItem(j, "flowlabel")) != NULL) test->settings->flowlabel = j_p->valueint; if ((j_p = cJSON_GetObjectItem(j, "title")) != NULL) test->title = strdup(j_p->valuestring); if ((j_p = cJSON_GetObjectItem(j, "congestion")) != NULL) test->congestion = strdup(j_p->valuestring); if (test->sender && test->protocol->id == Ptcp && has_tcpinfo_retransmits()) test->sender_has_retransmits = 1; cJSON_Delete(j); } return r; } /*************************************************************/ static int send_results(struct iperf_test *test) { int r = 0; cJSON *j; cJSON *j_streams; struct iperf_stream *sp; cJSON *j_stream; int sender_has_retransmits; iperf_size_t bytes_transferred; int retransmits; j = cJSON_CreateObject(); if (j == NULL) { i_errno = IEPACKAGERESULTS; r = -1; } else { cJSON_AddFloatToObject(j, "cpu_util_total", test->cpu_util[0]); cJSON_AddFloatToObject(j, "cpu_util_user", test->cpu_util[1]); cJSON_AddFloatToObject(j, "cpu_util_system", test->cpu_util[2]); if ( ! test->sender ) sender_has_retransmits = -1; else sender_has_retransmits = test->sender_has_retransmits; cJSON_AddIntToObject(j, "sender_has_retransmits", sender_has_retransmits); j_streams = cJSON_CreateArray(); if (j_streams == NULL) { i_errno = IEPACKAGERESULTS; r = -1; } else { cJSON_AddItemToObject(j, "streams", j_streams); SLIST_FOREACH(sp, &test->streams, streams) { j_stream = cJSON_CreateObject(); if (j_stream == NULL) { i_errno = IEPACKAGERESULTS; r = -1; } else { cJSON_AddItemToArray(j_streams, j_stream); bytes_transferred = test->sender ? sp->result->bytes_sent : sp->result->bytes_received; retransmits = (test->sender && test->sender_has_retransmits) ? sp->result->stream_retrans : -1; cJSON_AddIntToObject(j_stream, "id", sp->id); cJSON_AddIntToObject(j_stream, "bytes", bytes_transferred); cJSON_AddIntToObject(j_stream, "retransmits", retransmits); cJSON_AddFloatToObject(j_stream, "jitter", sp->jitter); cJSON_AddIntToObject(j_stream, "errors", sp->cnt_error); cJSON_AddIntToObject(j_stream, "packets", sp->packet_count); } } if (r == 0 && JSON_write(test->ctrl_sck, j) < 0) { i_errno = IESENDRESULTS; r = -1; } } cJSON_Delete(j); } return r; } /*************************************************************/ static int get_results(struct iperf_test *test) { int r = 0; cJSON *j; cJSON *j_cpu_util_total; cJSON *j_cpu_util_user; cJSON *j_cpu_util_system; cJSON *j_sender_has_retransmits; int result_has_retransmits; cJSON *j_streams; int n, i; cJSON *j_stream; cJSON *j_id; cJSON *j_bytes; cJSON *j_retransmits; cJSON *j_jitter; cJSON *j_errors; cJSON *j_packets; int sid, cerror, pcount; double jitter; iperf_size_t bytes_transferred; int retransmits; struct iperf_stream *sp; j = JSON_read(test->ctrl_sck); if (j == NULL) { i_errno = IERECVRESULTS; r = -1; } else { j_cpu_util_total = cJSON_GetObjectItem(j, "cpu_util_total"); j_cpu_util_user = cJSON_GetObjectItem(j, "cpu_util_user"); j_cpu_util_system = cJSON_GetObjectItem(j, "cpu_util_system"); j_sender_has_retransmits = cJSON_GetObjectItem(j, "sender_has_retransmits"); if (j_cpu_util_total == NULL || j_cpu_util_user == NULL || j_cpu_util_system == NULL || j_sender_has_retransmits == NULL) { i_errno = IERECVRESULTS; r = -1; } else { test->remote_cpu_util[0] = j_cpu_util_total->valuefloat; test->remote_cpu_util[1] = j_cpu_util_user->valuefloat; test->remote_cpu_util[2] = j_cpu_util_system->valuefloat; result_has_retransmits = j_sender_has_retransmits->valueint; if (! test->sender) test->sender_has_retransmits = result_has_retransmits; j_streams = cJSON_GetObjectItem(j, "streams"); if (j_streams == NULL) { i_errno = IERECVRESULTS; r = -1; } else { n = cJSON_GetArraySize(j_streams); for (i=0; ivalueint; bytes_transferred = j_bytes->valueint; retransmits = j_retransmits->valueint; jitter = j_jitter->valuefloat; cerror = j_errors->valueint; pcount = j_packets->valueint; SLIST_FOREACH(sp, &test->streams, streams) if (sp->id == sid) break; if (sp == NULL) { i_errno = IESTREAMID; r = -1; } else { if (test->sender) { sp->jitter = jitter; sp->cnt_error = cerror; sp->packet_count = pcount; sp->result->bytes_received = bytes_transferred; } else { sp->result->bytes_sent = bytes_transferred; sp->result->stream_retrans = retransmits; } } } } } } } cJSON_Delete(j); } return r; } /*************************************************************/ static int JSON_write(int fd, cJSON *json) { uint32_t hsize, nsize; char *str; int r = 0; str = cJSON_PrintUnformatted(json); if (str == NULL) r = -1; else { hsize = strlen(str); nsize = htonl(hsize); if (Nwrite(fd, (char*) &nsize, sizeof(nsize), Ptcp) < 0) r = -1; else { if (Nwrite(fd, str, hsize, Ptcp) < 0) r = -1; } free(str); } return r; } /*************************************************************/ static cJSON * JSON_read(int fd) { uint32_t hsize, nsize; char *str; cJSON *json = NULL; if (Nread(fd, (char*) &nsize, sizeof(nsize), Ptcp) >= 0) { hsize = ntohl(nsize); str = (char *) malloc(hsize+1); /* +1 for EOS */ if (str != NULL) { if (Nread(fd, str, hsize, Ptcp) >= 0) { str[hsize] = '\0'; /* add the EOS */ json = cJSON_Parse(str); } } free(str); } return json; } /*************************************************************/ /** * add_to_interval_list -- adds new interval to the interval_list */ void add_to_interval_list(struct iperf_stream_result * rp, struct iperf_interval_results * new) { struct iperf_interval_results *irp; irp = (struct iperf_interval_results *) malloc(sizeof(struct iperf_interval_results)); memcpy(irp, new, sizeof(struct iperf_interval_results)); TAILQ_INSERT_TAIL(&rp->interval_results, irp, irlistentries); } /************************************************************/ /** * connect_msg -- displays connection message * denoting sender/receiver details * */ void connect_msg(struct iperf_stream *sp) { char ipl[INET6_ADDRSTRLEN], ipr[INET6_ADDRSTRLEN]; int lport, rport; if (getsockdomain(sp->socket) == AF_INET) { inet_ntop(AF_INET, (void *) &((struct sockaddr_in *) &sp->local_addr)->sin_addr, ipl, sizeof(ipl)); mapped_v4_to_regular_v4(ipl); inet_ntop(AF_INET, (void *) &((struct sockaddr_in *) &sp->remote_addr)->sin_addr, ipr, sizeof(ipr)); mapped_v4_to_regular_v4(ipr); lport = ntohs(((struct sockaddr_in *) &sp->local_addr)->sin_port); rport = ntohs(((struct sockaddr_in *) &sp->remote_addr)->sin_port); } else { inet_ntop(AF_INET6, (void *) &((struct sockaddr_in6 *) &sp->local_addr)->sin6_addr, ipl, sizeof(ipl)); mapped_v4_to_regular_v4(ipl); inet_ntop(AF_INET6, (void *) &((struct sockaddr_in6 *) &sp->remote_addr)->sin6_addr, ipr, sizeof(ipr)); mapped_v4_to_regular_v4(ipr); lport = ntohs(((struct sockaddr_in6 *) &sp->local_addr)->sin6_port); rport = ntohs(((struct sockaddr_in6 *) &sp->remote_addr)->sin6_port); } if (sp->test->json_output) cJSON_AddItemToObject(sp->test->json_start, "connected", iperf_json_printf("socket: %d local_host: %s local_port: %d remote_host: %s remote_port: %d", (int64_t) sp->socket, ipl, (int64_t) lport, ipr, (int64_t) rport)); else iprintf(sp->test, report_connected, sp->socket, ipl, lport, ipr, rport); } /**************************************************************************/ struct iperf_test * iperf_new_test() { struct iperf_test *test; test = (struct iperf_test *) malloc(sizeof(struct iperf_test)); if (!test) { i_errno = IENEWTEST; return NULL; } /* initialize everything to zero */ memset(test, 0, sizeof(struct iperf_test)); test->settings = (struct iperf_settings *) malloc(sizeof(struct iperf_settings)); if (!test->settings) { free(test); i_errno = IENEWTEST; return NULL; } memset(test->settings, 0, sizeof(struct iperf_settings)); /* By default all output goes to stdout */ test->outfile = stdout; return test; } /**************************************************************************/ struct protocol * protocol_new(void) { struct protocol *proto; proto = malloc(sizeof(struct protocol)); if(!proto) { return NULL; } memset(proto, 0, sizeof(struct protocol)); return proto; } void protocol_free(struct protocol *proto) { free(proto); } /**************************************************************************/ int iperf_defaults(struct iperf_test *testp) { struct protocol *tcp, *udp; #if defined(HAVE_SCTP) struct protocol *sctp; #endif /* HAVE_SCTP */ testp->omit = OMIT; testp->duration = DURATION; testp->diskfile_name = (char*) 0; testp->affinity = -1; testp->server_affinity = -1; #if defined(HAVE_CPUSET_SETAFFINITY) CPU_ZERO(&testp->cpumask); #endif /* HAVE_CPUSET_SETAFFINITY */ testp->title = NULL; testp->congestion = NULL; testp->server_port = PORT; testp->ctrl_sck = -1; testp->prot_listener = -1; testp->stats_callback = iperf_stats_callback; testp->reporter_callback = iperf_reporter_callback; testp->stats_interval = testp->reporter_interval = 1; testp->num_streams = 1; testp->settings->domain = AF_UNSPEC; testp->settings->unit_format = 'a'; testp->settings->socket_bufsize = 0; /* use autotuning */ testp->settings->blksize = DEFAULT_TCP_BLKSIZE; testp->settings->rate = 0; testp->settings->burst = 0; testp->settings->mss = 0; testp->settings->bytes = 0; testp->settings->blocks = 0; memset(testp->cookie, 0, COOKIE_SIZE); testp->multisend = 10; /* arbitrary */ /* Set up protocol list */ SLIST_INIT(&testp->streams); SLIST_INIT(&testp->protocols); tcp = protocol_new(); if (!tcp) return -1; tcp->id = Ptcp; tcp->name = "TCP"; tcp->accept = iperf_tcp_accept; tcp->listen = iperf_tcp_listen; tcp->connect = iperf_tcp_connect; tcp->send = iperf_tcp_send; tcp->recv = iperf_tcp_recv; tcp->init = NULL; SLIST_INSERT_HEAD(&testp->protocols, tcp, protocols); udp = protocol_new(); if (!udp) { protocol_free(tcp); return -1; } udp->id = Pudp; udp->name = "UDP"; udp->accept = iperf_udp_accept; udp->listen = iperf_udp_listen; udp->connect = iperf_udp_connect; udp->send = iperf_udp_send; udp->recv = iperf_udp_recv; udp->init = iperf_udp_init; SLIST_INSERT_AFTER(tcp, udp, protocols); set_protocol(testp, Ptcp); #if defined(HAVE_SCTP) sctp = protocol_new(); if (!sctp) { protocol_free(tcp); protocol_free(udp); return -1; } sctp->id = Psctp; sctp->name = "SCTP"; sctp->accept = iperf_sctp_accept; sctp->listen = iperf_sctp_listen; sctp->connect = iperf_sctp_connect; sctp->send = iperf_sctp_send; sctp->recv = iperf_sctp_recv; sctp->init = iperf_sctp_init; SLIST_INSERT_AFTER(udp, sctp, protocols); #endif /* HAVE_SCTP */ testp->on_new_stream = iperf_on_new_stream; testp->on_test_start = iperf_on_test_start; testp->on_connect = iperf_on_connect; testp->on_test_finish = iperf_on_test_finish; return 0; } /**************************************************************************/ void iperf_free_test(struct iperf_test *test) { struct protocol *prot; struct iperf_stream *sp; /* Free streams */ while (!SLIST_EMPTY(&test->streams)) { sp = SLIST_FIRST(&test->streams); SLIST_REMOVE_HEAD(&test->streams, streams); iperf_free_stream(sp); } if (test->server_hostname) free(test->server_hostname); if (test->bind_address) free(test->bind_address); free(test->settings); if (test->title) free(test->title); if (test->congestion) free(test->congestion); if (test->omit_timer != NULL) tmr_cancel(test->omit_timer); if (test->timer != NULL) tmr_cancel(test->timer); if (test->stats_timer != NULL) tmr_cancel(test->stats_timer); if (test->reporter_timer != NULL) tmr_cancel(test->reporter_timer); /* Free protocol list */ while (!SLIST_EMPTY(&test->protocols)) { prot = SLIST_FIRST(&test->protocols); SLIST_REMOVE_HEAD(&test->protocols, protocols); free(prot); } if (test->json_output_string) { free(test->json_output_string); test->json_output_string = NULL; } /* XXX: Why are we setting these values to NULL? */ // test->streams = NULL; test->stats_callback = NULL; test->reporter_callback = NULL; free(test); } void iperf_reset_test(struct iperf_test *test) { struct iperf_stream *sp; /* Free streams */ while (!SLIST_EMPTY(&test->streams)) { sp = SLIST_FIRST(&test->streams); SLIST_REMOVE_HEAD(&test->streams, streams); iperf_free_stream(sp); } if (test->omit_timer != NULL) { tmr_cancel(test->omit_timer); test->omit_timer = NULL; } if (test->timer != NULL) { tmr_cancel(test->timer); test->timer = NULL; } if (test->stats_timer != NULL) { tmr_cancel(test->stats_timer); test->stats_timer = NULL; } if (test->reporter_timer != NULL) { tmr_cancel(test->reporter_timer); test->reporter_timer = NULL; } test->done = 0; SLIST_INIT(&test->streams); test->role = 's'; test->sender = 0; test->sender_has_retransmits = 0; set_protocol(test, Ptcp); test->omit = OMIT; test->duration = DURATION; test->server_affinity = -1; #if defined(HAVE_CPUSET_SETAFFINITY) CPU_ZERO(&test->cpumask); #endif /* HAVE_CPUSET_SETAFFINITY */ test->state = 0; if(test->title) { free(test->title); test->title = NULL; } if(test->server_hostname) { free(test->server_hostname); test->server_hostname = NULL; } if(test->bind_address) { free(test->bind_address); test->bind_address = NULL; } if(test->congestion) { free(test->congestion); test->congestion = NULL; } test->ctrl_sck = -1; test->prot_listener = -1; test->bytes_sent = 0; test->blocks_sent = 0; test->reverse = 0; test->no_delay = 0; FD_ZERO(&test->read_set); FD_ZERO(&test->write_set); test->num_streams = 1; test->settings->socket_bufsize = 0; test->settings->blksize = DEFAULT_TCP_BLKSIZE; test->settings->rate = 0; test->settings->burst = 0; test->settings->mss = 0; memset(test->cookie, 0, COOKIE_SIZE); test->multisend = 10; /* arbitrary */ } /* Reset all of a test's stats back to zero. Called when the omitting ** period is over. */ void iperf_reset_stats(struct iperf_test *test) { struct timeval now; struct iperf_stream *sp; struct iperf_stream_result *rp; test->bytes_sent = 0; test->blocks_sent = 0; gettimeofday(&now, NULL); SLIST_FOREACH(sp, &test->streams, streams) { sp->omitted_packet_count = sp->packet_count; sp->jitter = 0; sp->outoforder_packets = 0; sp->cnt_error = 0; rp = sp->result; rp->bytes_sent = rp->bytes_received = 0; rp->bytes_sent_this_interval = rp->bytes_received_this_interval = 0; if (test->sender && test->sender_has_retransmits) { struct iperf_interval_results ir; /* temporary results structure */ save_tcpinfo(sp, &ir); rp->stream_prev_total_retrans = get_total_retransmits(&ir); } rp->stream_retrans = 0; rp->start_time = now; } } /**************************************************************************/ /** * iperf_stats_callback -- handles the statistic gathering for both the client and server * * XXX: This function needs to be updated to reflect the new code */ void iperf_stats_callback(struct iperf_test *test) { struct iperf_stream *sp; struct iperf_stream_result *rp = NULL; struct iperf_interval_results *irp, temp; temp.omitted = test->omitting; SLIST_FOREACH(sp, &test->streams, streams) { rp = sp->result; temp.bytes_transferred = test->sender ? rp->bytes_sent_this_interval : rp->bytes_received_this_interval; irp = TAILQ_LAST(&rp->interval_results, irlisthead); /* result->end_time contains timestamp of previous interval */ if ( irp != NULL ) /* not the 1st interval */ memcpy(&temp.interval_start_time, &rp->end_time, sizeof(struct timeval)); else /* or use timestamp from beginning */ memcpy(&temp.interval_start_time, &rp->start_time, sizeof(struct timeval)); /* now save time of end of this interval */ gettimeofday(&rp->end_time, NULL); memcpy(&temp.interval_end_time, &rp->end_time, sizeof(struct timeval)); temp.interval_duration = timeval_diff(&temp.interval_start_time, &temp.interval_end_time); //temp.interval_duration = timeval_diff(&temp.interval_start_time, &temp.interval_end_time); if (test->protocol->id == Ptcp) { if ( has_tcpinfo()) { save_tcpinfo(sp, &temp); if (test->sender && test->sender_has_retransmits) { long total_retrans = get_total_retransmits(&temp); temp.interval_retrans = total_retrans - rp->stream_prev_total_retrans; rp->stream_retrans += temp.interval_retrans; rp->stream_prev_total_retrans = total_retrans; temp.snd_cwnd = get_snd_cwnd(&temp); } } } else { if (irp == NULL) { temp.interval_packet_count = sp->packet_count; temp.interval_outoforder_packets = sp->outoforder_packets; temp.interval_cnt_error = sp->cnt_error; } else { temp.interval_packet_count = sp->packet_count - irp->packet_count; temp.interval_outoforder_packets = sp->outoforder_packets - irp->outoforder_packets; temp.interval_cnt_error = sp->cnt_error - irp->cnt_error; } temp.packet_count = sp->packet_count; temp.jitter = sp->jitter; temp.outoforder_packets = sp->outoforder_packets; temp.cnt_error = sp->cnt_error; } add_to_interval_list(rp, &temp); rp->bytes_sent_this_interval = rp->bytes_received_this_interval = 0; } } static void iperf_print_intermediate(struct iperf_test *test) { char ubuf[UNIT_LEN]; char nbuf[UNIT_LEN]; struct iperf_stream *sp = NULL; struct iperf_interval_results *irp; iperf_size_t bytes = 0; double bandwidth; int retransmits = 0; double start_time, end_time; cJSON *json_interval; cJSON *json_interval_streams; int total_packets = 0, lost_packets = 0; double avg_jitter = 0.0, lost_percent; if (test->json_output) { json_interval = cJSON_CreateObject(); if (json_interval == NULL) return; cJSON_AddItemToArray(test->json_intervals, json_interval); json_interval_streams = cJSON_CreateArray(); if (json_interval_streams == NULL) return; cJSON_AddItemToObject(json_interval, "streams", json_interval_streams); } else { json_interval = NULL; json_interval_streams = NULL; } SLIST_FOREACH(sp, &test->streams, streams) { print_interval_results(test, sp, json_interval_streams); /* sum up all streams */ irp = TAILQ_LAST(&sp->result->interval_results, irlisthead); if (irp == NULL) { iperf_err(test, "iperf_print_intermediate error: interval_results is NULL"); return; } bytes += irp->bytes_transferred; if (test->protocol->id == Ptcp) { if (test->sender && test->sender_has_retransmits) { retransmits += irp->interval_retrans; } } else { total_packets += irp->interval_packet_count; lost_packets += irp->interval_cnt_error; avg_jitter += irp->jitter; } } /* next build string with sum of all streams */ if (test->num_streams > 1 || test->json_output) { sp = SLIST_FIRST(&test->streams); /* reset back to 1st stream */ irp = TAILQ_LAST(&sp->result->interval_results, irlisthead); /* use 1st stream for timing info */ unit_snprintf(ubuf, UNIT_LEN, (double) bytes, 'A'); bandwidth = (double) bytes / (double) irp->interval_duration; unit_snprintf(nbuf, UNIT_LEN, bandwidth, test->settings->unit_format); start_time = timeval_diff(&sp->result->start_time,&irp->interval_start_time); end_time = timeval_diff(&sp->result->start_time,&irp->interval_end_time); if (test->protocol->id == Ptcp || test->protocol->id == Psctp) { if (test->sender && test->sender_has_retransmits) { /* Interval sum, TCP with retransmits. */ if (test->json_output) cJSON_AddItemToObject(json_interval, "sum", iperf_json_printf("start: %f end: %f seconds: %f bytes: %d bits_per_second: %f retransmits: %d omitted: %b", (double) start_time, (double) end_time, (double) irp->interval_duration, (int64_t) bytes, bandwidth * 8, (int64_t) retransmits, irp->omitted)); /* XXX irp->omitted or test->omitting? */ else iprintf(test, report_sum_bw_retrans_format, start_time, end_time, ubuf, nbuf, retransmits, irp->omitted?report_omitted:""); /* XXX irp->omitted or test->omitting? */ } else { /* Interval sum, TCP without retransmits. */ if (test->json_output) cJSON_AddItemToObject(json_interval, "sum", iperf_json_printf("start: %f end: %f seconds: %f bytes: %d bits_per_second: %f omitted: %b", (double) start_time, (double) end_time, (double) irp->interval_duration, (int64_t) bytes, bandwidth * 8, test->omitting)); else iprintf(test, report_sum_bw_format, start_time, end_time, ubuf, nbuf, test->omitting?report_omitted:""); } } else { /* Interval sum, UDP. */ if (test->sender) { if (test->json_output) cJSON_AddItemToObject(json_interval, "sum", iperf_json_printf("start: %f end: %f seconds: %f bytes: %d bits_per_second: %f packets: %d omitted: %b", (double) start_time, (double) end_time, (double) irp->interval_duration, (int64_t) bytes, bandwidth * 8, (int64_t) total_packets, test->omitting)); else iprintf(test, report_sum_bw_udp_sender_format, start_time, end_time, ubuf, nbuf, total_packets, test->omitting?report_omitted:""); } else { avg_jitter /= test->num_streams; lost_percent = 100.0 * lost_packets / total_packets; if (test->json_output) cJSON_AddItemToObject(json_interval, "sum", iperf_json_printf("start: %f end: %f seconds: %f bytes: %d bits_per_second: %f jitter_ms: %f lost_packets: %d packets: %d lost_percent: %f omitted: %b", (double) start_time, (double) end_time, (double) irp->interval_duration, (int64_t) bytes, bandwidth * 8, (double) avg_jitter * 1000.0, (int64_t) lost_packets, (int64_t) total_packets, (double) lost_percent, test->omitting)); else iprintf(test, report_sum_bw_udp_format, start_time, end_time, ubuf, nbuf, avg_jitter * 1000.0, lost_packets, total_packets, lost_percent, test->omitting?report_omitted:""); } } } } static void iperf_print_results(struct iperf_test *test) { cJSON *json_summary_streams = NULL; cJSON *json_summary_stream = NULL; int total_retransmits = 0; int total_packets = 0, lost_packets = 0; char ubuf[UNIT_LEN]; char nbuf[UNIT_LEN]; struct stat sb; char sbuf[UNIT_LEN]; struct iperf_stream *sp = NULL; iperf_size_t bytes_sent, total_sent = 0; iperf_size_t bytes_received, total_received = 0; double start_time, end_time, avg_jitter = 0.0, lost_percent; double bandwidth; /* print final summary for all intervals */ if (test->json_output) { json_summary_streams = cJSON_CreateArray(); if (json_summary_streams == NULL) return; cJSON_AddItemToObject(test->json_end, "streams", json_summary_streams); } else { iprintf(test, "%s", report_bw_separator); if (test->verbose) iprintf(test, "%s", report_summary); if (test->protocol->id == Ptcp || test->protocol->id == Psctp) { if (test->sender_has_retransmits) iprintf(test, "%s", report_bw_retrans_header); else iprintf(test, "%s", report_bw_header); } else iprintf(test, "%s", report_bw_udp_header); } start_time = 0.; sp = SLIST_FIRST(&test->streams); end_time = timeval_diff(&sp->result->start_time, &sp->result->end_time); SLIST_FOREACH(sp, &test->streams, streams) { if (test->json_output) { json_summary_stream = cJSON_CreateObject(); if (json_summary_stream == NULL) return; cJSON_AddItemToArray(json_summary_streams, json_summary_stream); } bytes_sent = sp->result->bytes_sent; bytes_received = sp->result->bytes_received; total_sent += bytes_sent; total_received += bytes_received; if (test->protocol->id == Ptcp || test->protocol->id == Psctp) { if (test->sender_has_retransmits) { total_retransmits += sp->result->stream_retrans; } } else { total_packets += (sp->packet_count - sp->omitted_packet_count); lost_packets += sp->cnt_error; avg_jitter += sp->jitter; } unit_snprintf(ubuf, UNIT_LEN, (double) bytes_sent, 'A'); bandwidth = (double) bytes_sent / (double) end_time; unit_snprintf(nbuf, UNIT_LEN, bandwidth, test->settings->unit_format); if (test->protocol->id == Ptcp || test->protocol->id == Psctp) { if (test->sender_has_retransmits) { /* Summary, TCP with retransmits. */ if (test->json_output) cJSON_AddItemToObject(json_summary_stream, "sender", iperf_json_printf("socket: %d start: %f end: %f seconds: %f bytes: %d bits_per_second: %f retransmits: %d", (int64_t) sp->socket, (double) start_time, (double) end_time, (double) end_time, (int64_t) bytes_sent, bandwidth * 8, (int64_t) sp->result->stream_retrans)); else iprintf(test, report_bw_retrans_format, sp->socket, start_time, end_time, ubuf, nbuf, sp->result->stream_retrans, report_sender); } else { /* Summary, TCP without retransmits. */ if (test->json_output) cJSON_AddItemToObject(json_summary_stream, "sender", iperf_json_printf("socket: %d start: %f end: %f seconds: %f bytes: %d bits_per_second: %f", (int64_t) sp->socket, (double) start_time, (double) end_time, (double) end_time, (int64_t) bytes_sent, bandwidth * 8)); else iprintf(test, report_bw_format, sp->socket, start_time, end_time, ubuf, nbuf, report_sender); } } else { /* Summary, UDP. */ lost_percent = 100.0 * sp->cnt_error / (sp->packet_count - sp->omitted_packet_count); if (test->json_output) cJSON_AddItemToObject(json_summary_stream, "udp", iperf_json_printf("socket: %d start: %f end: %f seconds: %f bytes: %d bits_per_second: %f jitter_ms: %f lost_packets: %d packets: %d lost_percent: %f", (int64_t) sp->socket, (double) start_time, (double) end_time, (double) end_time, (int64_t) bytes_sent, bandwidth * 8, (double) sp->jitter * 1000.0, (int64_t) sp->cnt_error, (int64_t) (sp->packet_count - sp->omitted_packet_count), (double) lost_percent)); else { iprintf(test, report_bw_udp_format, sp->socket, start_time, end_time, ubuf, nbuf, sp->jitter * 1000.0, sp->cnt_error, (sp->packet_count - sp->omitted_packet_count), lost_percent, ""); if (test->role == 'c') iprintf(test, report_datagrams, sp->socket, (sp->packet_count - sp->omitted_packet_count)); if (sp->outoforder_packets > 0) iprintf(test, report_sum_outoforder, start_time, end_time, sp->cnt_error); } } if (sp->diskfile_fd >= 0) { if (fstat(sp->diskfile_fd, &sb) == 0) { int percent = (int) ( ( (double) bytes_sent / (double) sb.st_size ) * 100.0 ); unit_snprintf(sbuf, UNIT_LEN, (double) sb.st_size, 'A'); if (test->json_output) cJSON_AddItemToObject(json_summary_stream, "diskfile", iperf_json_printf("sent: %d size: %d percent: %d filename: %s", (int64_t) bytes_sent, (int64_t) sb.st_size, (int64_t) percent, test->diskfile_name)); else iprintf(test, report_diskfile, ubuf, sbuf, percent, test->diskfile_name); } } unit_snprintf(ubuf, UNIT_LEN, (double) bytes_received, 'A'); bandwidth = (double) bytes_received / (double) end_time; unit_snprintf(nbuf, UNIT_LEN, bandwidth, test->settings->unit_format); if (test->protocol->id == Ptcp || test->protocol->id == Psctp) { if (test->json_output) cJSON_AddItemToObject(json_summary_stream, "receiver", iperf_json_printf("socket: %d start: %f end: %f seconds: %f bytes: %d bits_per_second: %f", (int64_t) sp->socket, (double) start_time, (double) end_time, (double) end_time, (int64_t) bytes_received, bandwidth * 8)); else iprintf(test, report_bw_format, sp->socket, start_time, end_time, ubuf, nbuf, report_receiver); } } if (test->num_streams > 1 || test->json_output) { unit_snprintf(ubuf, UNIT_LEN, (double) total_sent, 'A'); bandwidth = (double) total_sent / (double) end_time; unit_snprintf(nbuf, UNIT_LEN, bandwidth, test->settings->unit_format); if (test->protocol->id == Ptcp || test->protocol->id == Psctp) { if (test->sender_has_retransmits) { /* Summary sum, TCP with retransmits. */ if (test->json_output) cJSON_AddItemToObject(test->json_end, "sum_sent", iperf_json_printf("start: %f end: %f seconds: %f bytes: %d bits_per_second: %f retransmits: %d", (double) start_time, (double) end_time, (double) end_time, (int64_t) total_sent, bandwidth * 8, (int64_t) total_retransmits)); else iprintf(test, report_sum_bw_retrans_format, start_time, end_time, ubuf, nbuf, total_retransmits, report_sender); } else { /* Summary sum, TCP without retransmits. */ if (test->json_output) cJSON_AddItemToObject(test->json_end, "sum_sent", iperf_json_printf("start: %f end: %f seconds: %f bytes: %d bits_per_second: %f", (double) start_time, (double) end_time, (double) end_time, (int64_t) total_sent, bandwidth * 8)); else iprintf(test, report_sum_bw_format, start_time, end_time, ubuf, nbuf, report_sender); } unit_snprintf(ubuf, UNIT_LEN, (double) total_received, 'A'); bandwidth = (double) total_received / (double) end_time; unit_snprintf(nbuf, UNIT_LEN, bandwidth, test->settings->unit_format); if (test->json_output) cJSON_AddItemToObject(test->json_end, "sum_received", iperf_json_printf("start: %f end: %f seconds: %f bytes: %d bits_per_second: %f", (double) start_time, (double) end_time, (double) end_time, (int64_t) total_received, bandwidth * 8)); else iprintf(test, report_sum_bw_format, start_time, end_time, ubuf, nbuf, report_receiver); } else { /* Summary sum, UDP. */ avg_jitter /= test->num_streams; lost_percent = 100.0 * lost_packets / total_packets; if (test->json_output) cJSON_AddItemToObject(test->json_end, "sum", iperf_json_printf("start: %f end: %f seconds: %f bytes: %d bits_per_second: %f jitter_ms: %f lost_packets: %d packets: %d lost_percent: %f", (double) start_time, (double) end_time, (double) end_time, (int64_t) total_sent, bandwidth * 8, (double) avg_jitter * 1000.0, (int64_t) lost_packets, (int64_t) total_packets, (double) lost_percent)); else iprintf(test, report_sum_bw_udp_format, start_time, end_time, ubuf, nbuf, avg_jitter * 1000.0, lost_packets, total_packets, lost_percent, ""); } } if (test->json_output) cJSON_AddItemToObject(test->json_end, "cpu_utilization_percent", iperf_json_printf("host_total: %f host_user: %f host_system: %f remote_total: %f remote_user: %f remote_system: %f", (double) test->cpu_util[0], (double) test->cpu_util[1], (double) test->cpu_util[2], (double) test->remote_cpu_util[0], (double) test->remote_cpu_util[1], (double) test->remote_cpu_util[2])); else if (test->verbose) iprintf(test, report_cpu, report_local, test->sender?report_sender:report_receiver, test->cpu_util[0], test->cpu_util[1], test->cpu_util[2], report_remote, test->sender?report_receiver:report_sender, test->remote_cpu_util[0], test->remote_cpu_util[1], test->remote_cpu_util[2]); } /**************************************************************************/ /** * iperf_reporter_callback -- handles the report printing * */ void iperf_reporter_callback(struct iperf_test *test) { switch (test->state) { case TEST_RUNNING: case STREAM_RUNNING: /* print interval results for each stream */ iperf_print_intermediate(test); break; case DISPLAY_RESULTS: iperf_print_intermediate(test); iperf_print_results(test); break; } } /**************************************************************************/ static void print_interval_results(struct iperf_test *test, struct iperf_stream *sp, cJSON *json_interval_streams) { char ubuf[UNIT_LEN]; char nbuf[UNIT_LEN]; char cbuf[UNIT_LEN]; double st = 0., et = 0.; struct iperf_interval_results *irp = NULL; double bandwidth, lost_percent; irp = TAILQ_LAST(&sp->result->interval_results, irlisthead); /* get last entry in linked list */ if (irp == NULL) { iperf_err(test, "print_interval_results error: interval_results is NULL"); return; } if (!test->json_output) { /* First stream? */ if (sp == SLIST_FIRST(&test->streams)) { /* It it's the first interval, print the header; ** else if there's more than one stream, print the separator; ** else nothing. */ if (timeval_equals(&sp->result->start_time, &irp->interval_start_time)) { if (test->protocol->id == Ptcp || test->protocol->id == Psctp) { if (test->sender && test->sender_has_retransmits) iprintf(test, "%s", report_bw_retrans_cwnd_header); else iprintf(test, "%s", report_bw_header); } else { if (test->sender) iprintf(test, "%s", report_bw_udp_sender_header); else iprintf(test, "%s", report_bw_udp_header); } } else if (test->num_streams > 1) iprintf(test, "%s", report_bw_separator); } } unit_snprintf(ubuf, UNIT_LEN, (double) (irp->bytes_transferred), 'A'); bandwidth = (double) irp->bytes_transferred / (double) irp->interval_duration; unit_snprintf(nbuf, UNIT_LEN, bandwidth, test->settings->unit_format); st = timeval_diff(&sp->result->start_time, &irp->interval_start_time); et = timeval_diff(&sp->result->start_time, &irp->interval_end_time); if (test->protocol->id == Ptcp || test->protocol->id == Psctp) { if (test->sender && test->sender_has_retransmits) { /* Interval, TCP with retransmits. */ if (test->json_output) cJSON_AddItemToArray(json_interval_streams, iperf_json_printf("socket: %d start: %f end: %f seconds: %f bytes: %d bits_per_second: %f retransmits: %d snd_cwnd: %d omitted: %b", (int64_t) sp->socket, (double) st, (double) et, (double) irp->interval_duration, (int64_t) irp->bytes_transferred, bandwidth * 8, (int64_t) irp->interval_retrans, (int64_t) irp->snd_cwnd, irp->omitted)); else { unit_snprintf(cbuf, UNIT_LEN, irp->snd_cwnd, 'A'); iprintf(test, report_bw_retrans_cwnd_format, sp->socket, st, et, ubuf, nbuf, irp->interval_retrans, cbuf, irp->omitted?report_omitted:""); } } else { /* Interval, TCP without retransmits. */ if (test->json_output) cJSON_AddItemToArray(json_interval_streams, iperf_json_printf("socket: %d start: %f end: %f seconds: %f bytes: %d bits_per_second: %f omitted: %b", (int64_t) sp->socket, (double) st, (double) et, (double) irp->interval_duration, (int64_t) irp->bytes_transferred, bandwidth * 8, irp->omitted)); else iprintf(test, report_bw_format, sp->socket, st, et, ubuf, nbuf, irp->omitted?report_omitted:""); } } else { /* Interval, UDP. */ if (test->sender) { if (test->json_output) cJSON_AddItemToArray(json_interval_streams, iperf_json_printf("socket: %d start: %f end: %f seconds: %f bytes: %d bits_per_second: %f packets: %d omitted: %b", (int64_t) sp->socket, (double) st, (double) et, (double) irp->interval_duration, (int64_t) irp->bytes_transferred, bandwidth * 8, (int64_t) irp->interval_packet_count, irp->omitted)); else iprintf(test, report_bw_udp_sender_format, sp->socket, st, et, ubuf, nbuf, irp->interval_packet_count, irp->omitted?report_omitted:""); } else { lost_percent = 100.0 * irp->interval_cnt_error / irp->interval_packet_count; if (test->json_output) cJSON_AddItemToArray(json_interval_streams, iperf_json_printf("socket: %d start: %f end: %f seconds: %f bytes: %d bits_per_second: %f jitter_ms: %f lost_packets: %d packets: %d lost_percent: %f omitted: %b", (int64_t) sp->socket, (double) st, (double) et, (double) irp->interval_duration, (int64_t) irp->bytes_transferred, bandwidth * 8, (double) irp->jitter * 1000.0, (int64_t) irp->interval_cnt_error, (int64_t) irp->interval_packet_count, (double) lost_percent, irp->omitted)); else iprintf(test, report_bw_udp_format, sp->socket, st, et, ubuf, nbuf, irp->jitter * 1000.0, irp->interval_cnt_error, irp->interval_packet_count, lost_percent, irp->omitted?report_omitted:""); } } } /**************************************************************************/ void iperf_free_stream(struct iperf_stream *sp) { struct iperf_interval_results *irp, *nirp; /* XXX: need to free interval list too! */ munmap(sp->buffer, sp->test->settings->blksize); close(sp->buffer_fd); if (sp->diskfile_fd >= 0) close(sp->diskfile_fd); for (irp = TAILQ_FIRST(&sp->result->interval_results); irp != TAILQ_END(sp->result->interval_results); irp = nirp) { nirp = TAILQ_NEXT(irp, irlistentries); free(irp); } free(sp->result); if (sp->send_timer != NULL) tmr_cancel(sp->send_timer); free(sp); } /**************************************************************************/ struct iperf_stream * iperf_new_stream(struct iperf_test *test, int s) { int i; struct iperf_stream *sp; char template[] = "/tmp/iperf3.XXXXXX"; h_errno = 0; sp = (struct iperf_stream *) malloc(sizeof(struct iperf_stream)); if (!sp) { i_errno = IECREATESTREAM; return NULL; } memset(sp, 0, sizeof(struct iperf_stream)); sp->test = test; sp->settings = test->settings; sp->result = (struct iperf_stream_result *) malloc(sizeof(struct iperf_stream_result)); if (!sp->result) { free(sp); i_errno = IECREATESTREAM; return NULL; } memset(sp->result, 0, sizeof(struct iperf_stream_result)); TAILQ_INIT(&sp->result->interval_results); /* Create and randomize the buffer */ sp->buffer_fd = mkstemp(template); if (sp->buffer_fd == -1) { i_errno = IECREATESTREAM; free(sp->result); free(sp); return NULL; } if (unlink(template) < 0) { i_errno = IECREATESTREAM; free(sp->result); free(sp); return NULL; } if (ftruncate(sp->buffer_fd, test->settings->blksize) < 0) { i_errno = IECREATESTREAM; free(sp->result); free(sp); return NULL; } sp->buffer = (char *) mmap(NULL, test->settings->blksize, PROT_READ|PROT_WRITE, MAP_PRIVATE, sp->buffer_fd, 0); if (sp->buffer == MAP_FAILED) { i_errno = IECREATESTREAM; free(sp->result); free(sp); return NULL; } srandom(time(NULL)); for (i = 0; i < test->settings->blksize; ++i) sp->buffer[i] = random(); /* Set socket */ sp->socket = s; sp->snd = test->protocol->send; sp->rcv = test->protocol->recv; if (test->diskfile_name != (char*) 0) { sp->diskfile_fd = open(test->diskfile_name, test->sender ? O_RDONLY : (O_WRONLY|O_CREAT|O_TRUNC)); if (sp->diskfile_fd == -1) { i_errno = IEFILE; munmap(sp->buffer, sp->test->settings->blksize); free(sp->result); free(sp); return NULL; } sp->snd2 = sp->snd; sp->snd = diskfile_send; sp->rcv2 = sp->rcv; sp->rcv = diskfile_recv; } else sp->diskfile_fd = -1; /* Initialize stream */ if (iperf_init_stream(sp, test) < 0) { close(sp->buffer_fd); munmap(sp->buffer, sp->test->settings->blksize); free(sp->result); free(sp); return NULL; } iperf_add_stream(test, sp); return sp; } /**************************************************************************/ int iperf_init_stream(struct iperf_stream *sp, struct iperf_test *test) { socklen_t len; int opt; len = sizeof(struct sockaddr_storage); if (getsockname(sp->socket, (struct sockaddr *) &sp->local_addr, &len) < 0) { i_errno = IEINITSTREAM; return -1; } len = sizeof(struct sockaddr_storage); if (getpeername(sp->socket, (struct sockaddr *) &sp->remote_addr, &len) < 0) { i_errno = IEINITSTREAM; return -1; } /* Set IP TOS */ if ((opt = test->settings->tos)) { if (getsockdomain(sp->socket) == AF_INET6) { #ifdef IPV6_TCLASS if (setsockopt(sp->socket, IPPROTO_IPV6, IPV6_TCLASS, &opt, sizeof(opt)) < 0) { i_errno = IESETCOS; return -1; } #else i_errno = IESETCOS; return -1; #endif } else { if (setsockopt(sp->socket, IPPROTO_IP, IP_TOS, &opt, sizeof(opt)) < 0) { i_errno = IESETTOS; return -1; } } } return 0; } /**************************************************************************/ void iperf_add_stream(struct iperf_test *test, struct iperf_stream *sp) { int i; struct iperf_stream *n, *prev; if (SLIST_EMPTY(&test->streams)) { SLIST_INSERT_HEAD(&test->streams, sp, streams); sp->id = 1; } else { // for (n = test->streams, i = 2; n->next; n = n->next, ++i); i = 2; SLIST_FOREACH(n, &test->streams, streams) { prev = n; ++i; } SLIST_INSERT_AFTER(prev, sp, streams); sp->id = i; } } /* This pair of routines gets inserted into the snd/rcv function pointers ** when there's a -F flag. They handle the file stuff and call the real ** snd/rcv functions, which have been saved in snd2/rcv2. ** ** The advantage of doing it this way is that in the much more common ** case of no -F flag, there is zero extra overhead. */ static int diskfile_send(struct iperf_stream *sp) { int r; r = read(sp->diskfile_fd, sp->buffer, sp->test->settings->blksize); if (r == 0) sp->test->done = 1; else r = sp->snd2(sp); return r; } static int diskfile_recv(struct iperf_stream *sp) { int r; r = sp->rcv2(sp); if (r > 0) { (void) write(sp->diskfile_fd, sp->buffer, r); (void) fsync(sp->diskfile_fd); } return r; } void iperf_catch_sigend(void (*handler)(int)) { signal(SIGINT, handler); signal(SIGTERM, handler); signal(SIGHUP, handler); } void iperf_got_sigend(struct iperf_test *test) { /* * If we're the client, or if we're a server and running a test, * then dump out the accumulated stats so far. */ if (test->role == 'c' || (test->role == 's' && test->state == TEST_RUNNING)) { test->done = 1; cpu_util(test->cpu_util); test->stats_callback(test); test->state = DISPLAY_RESULTS; /* change local state only */ if (test->on_test_finish) test->on_test_finish(test); test->reporter_callback(test); } if (test->ctrl_sck >= 0) { test->state = (test->role == 'c') ? CLIENT_TERMINATE : SERVER_TERMINATE; (void) Nwrite(test->ctrl_sck, (char*) &test->state, sizeof(signed char), Ptcp); } i_errno = (test->role == 'c') ? IECLIENTTERM : IESERVERTERM; iperf_errexit(test, "interrupt - %s", iperf_strerror(i_errno)); } /* Try to write a PID file if requested, return -1 on an error. */ int iperf_create_pidfile(struct iperf_test *test) { if (test->pidfile) { int fd; char buf[8]; fd = open(test->pidfile, O_WRONLY | O_CREAT | O_TRUNC, 0666); if (fd < 0) { return -1; } snprintf(buf, sizeof(buf), "%d", getpid()); /* no trailing newline */ if (write(fd, buf, strlen(buf) + 1) < 0) { return -1; } if (close(fd) < 0) { return -1; }; } return 0; } /* Get rid of a PID file, return -1 on error. */ int iperf_delete_pidfile(struct iperf_test *test) { if (test->pidfile) { if (unlink(test->pidfile) < 0) { return -1; } } return 0; } int iperf_json_start(struct iperf_test *test) { test->json_top = cJSON_CreateObject(); if (test->json_top == NULL) return -1; if (test->title) cJSON_AddStringToObject(test->json_top, "title", test->title); test->json_start = cJSON_CreateObject(); if (test->json_start == NULL) return -1; cJSON_AddItemToObject(test->json_top, "start", test->json_start); test->json_intervals = cJSON_CreateArray(); if (test->json_intervals == NULL) return -1; cJSON_AddItemToObject(test->json_top, "intervals", test->json_intervals); test->json_end = cJSON_CreateObject(); if (test->json_end == NULL) return -1; cJSON_AddItemToObject(test->json_top, "end", test->json_end); return 0; } int iperf_json_finish(struct iperf_test *test) { test->json_output_string = cJSON_Print(test->json_top); if (test->json_output_string == NULL) return -1; fprintf(test->outfile, "%s\n", test->json_output_string); iflush(test); cJSON_Delete(test->json_top); test->json_top = test->json_start = test->json_intervals = test->json_end = NULL; return 0; } /* CPU affinity stuff - Linux and FreeBSD only. */ int iperf_setaffinity(struct iperf_test *test, int affinity) { #if defined(HAVE_SCHED_SETAFFINITY) cpu_set_t cpu_set; CPU_ZERO(&cpu_set); CPU_SET(affinity, &cpu_set); if (sched_setaffinity(0, sizeof(cpu_set_t), &cpu_set) != 0) { i_errno = IEAFFINITY; return -1; } return 0; #elif defined(HAVE_CPUSET_SETAFFINITY) cpuset_t cpumask; if(cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset_t), &test->cpumask) != 0) { i_errno = IEAFFINITY; return -1; } CPU_ZERO(&cpumask); CPU_SET(affinity, &cpumask); if(cpuset_setaffinity(CPU_LEVEL_WHICH,CPU_WHICH_PID, -1, sizeof(cpuset_t), &cpumask) != 0) { i_errno = IEAFFINITY; return -1; } return 0; #else /* neither HAVE_SCHED_SETAFFINITY nor HAVE_CPUSET_SETAFFINITY */ i_errno = IEAFFINITY; return -1; #endif /* neither HAVE_SCHED_SETAFFINITY nor HAVE_CPUSET_SETAFFINITY */ } int iperf_clearaffinity(struct iperf_test *test) { #if defined(HAVE_SCHED_SETAFFINITY) cpu_set_t cpu_set; int i; CPU_ZERO(&cpu_set); for (i = 0; i < CPU_SETSIZE; ++i) CPU_SET(i, &cpu_set); if (sched_setaffinity(0, sizeof(cpu_set_t), &cpu_set) != 0) { i_errno = IEAFFINITY; return -1; } return 0; #elif defined(HAVE_CPUSET_SETAFFINITY) if(cpuset_setaffinity(CPU_LEVEL_WHICH,CPU_WHICH_PID, -1, sizeof(cpuset_t), &test->cpumask) != 0) { i_errno = IEAFFINITY; return -1; } return 0; #else /* neither HAVE_SCHED_SETAFFINITY nor HAVE_CPUSET_SETAFFINITY */ i_errno = IEAFFINITY; return -1; #endif /* neither HAVE_SCHED_SETAFFINITY nor HAVE_CPUSET_SETAFFINITY */ } int iprintf(struct iperf_test *test, const char* format, ...) { va_list argp; int r; if (test->title) fprintf(test->outfile, "%s: ", test->title); va_start(argp, format); r = vfprintf(test->outfile, format, argp); va_end(argp); return r; } int iflush(struct iperf_test *test) { return fflush(test->outfile); }