static int xmit_packet_precheck(struct ctx *ctx, unsigned int cpu)
{
unsigned int i;
unsigned long plen_total, orig = ctx->num;
size_t mtu, total_len = 0;
bug_on(plen != dlen);
for (i = 0; i < plen; ++i)
total_len += packets[i].len;
__set_state_cf(cpu, plen, total_len, CPU_STATS_STATE_CFG);
plen_total = __wait_and_sum_others(ctx, cpu);
if (orig > 0) {
ctx->num = (unsigned long) round((1.0 * plen / plen_total) * orig);
__set_state_cd(cpu, ctx->num, CPU_STATS_STATE_CHK |
CPU_STATS_STATE_CFG);
__correct_global_delta(ctx, cpu, orig);
}
if (plen == 0) {
__set_state(cpu, CPU_STATS_STATE_RES);
return 0;
}
for (mtu = device_mtu(ctx->device), i = 0; i < plen; ++i) {
if (packets[i].len > mtu + PKT_MIN_LEN)
panic("Device MTU < than packet%d's size!\n", i);
if (packets[i].len <= PKT_MIN_LEN)
panic("Packet%d's size must be > %d bytes!\n",
i, PKT_MIN_LEN);
}
return 0;
}
static void enter_mode_read_pcap(struct mode *mode)
{
int ret, fd;
struct pcap_pkthdr phdr;
struct sock_fprog bpf_ops;
struct tx_stats stats;
struct frame_map fm;
uint8_t *out;
size_t out_len;
if (!pcap_ops[mode->pcap])
panic("pcap group not supported!\n");
fd = open_or_die(mode->device_in, O_RDONLY | O_LARGEFILE | O_NOATIME);
ret = pcap_ops[mode->pcap]->pull_file_header(fd);
if (ret)
panic("error reading pcap header!\n");
if (pcap_ops[mode->pcap]->prepare_reading_pcap) {
ret = pcap_ops[mode->pcap]->prepare_reading_pcap(fd);
if (ret)
panic("error prepare reading pcap!\n");
}
memset(&fm, 0, sizeof(fm));
memset(&bpf_ops, 0, sizeof(bpf_ops));
memset(&stats, 0, sizeof(stats));
bpf_parse_rules(mode->filter, &bpf_ops);
dissector_init_all(mode->print_mode);
out_len = device_mtu("lo");
out = xmalloc_aligned(out_len, 64);
printf("BPF:\n");
bpf_dump_all(&bpf_ops);
printf("MD: RD %s\n\n", pcap_ops[mode->pcap]->name);
while (likely(sigint == 0)) {
do {
ret = pcap_ops[mode->pcap]->read_pcap_pkt(fd, &phdr,
out, out_len);
if (unlikely(ret <= 0))
goto out;
} while (mode->filter && !bpf_run_filter(&bpf_ops, out, phdr.len));
pcap_pkthdr_to_tpacket_hdr(&phdr, &fm.tp_h);
stats.tx_bytes += fm.tp_h.tp_len;;
stats.tx_packets++;
show_frame_hdr(&fm, mode->print_mode, RING_MODE_EGRESS);
dissector_entry_point(out, fm.tp_h.tp_snaplen,
mode->link_type);
if (frame_cnt_max != 0 &&
stats.tx_packets >= frame_cnt_max) {
sigint = 1;
break;
}
}
out:
fflush(stdout);
printf("\n");
printf("\r%12lu frames outgoing\n", stats.tx_packets);
printf("\r%12lu bytes outgoing\n", stats.tx_bytes);
xfree(out);
dissector_cleanup_all();
if (pcap_ops[mode->pcap]->prepare_close_pcap)
pcap_ops[mode->pcap]->prepare_close_pcap(fd, PCAP_MODE_READ);
close(fd);
}
int main(int argc, char **argv)
{
int c, i, j, opt_index;
char *ptr;
bool prio_high = false;
struct mode mode;
void (*enter_mode)(struct mode *mode) = NULL;
check_for_root_maybe_die();
memset(&mode, 0, sizeof(mode));
mode.link_type = LINKTYPE_EN10MB;
mode.print_mode = FNTTYPE_PRINT_NORM;
mode.cpu = CPU_UNKNOWN;
mode.packet_type = PACKET_ALL;
mode.promiscuous = true;
mode.randomize = false;
mode.pcap = PCAP_OPS_SG;
mode.dump_interval = DUMP_INTERVAL;
while ((c = getopt_long(argc, argv, short_options, long_options,
&opt_index)) != EOF) {
switch (c) {
case 'd':
case 'i':
mode.device_in = xstrdup(optarg);
break;
case 'o':
mode.device_out = xstrdup(optarg);
break;
case 'r':
mode.randomize = true;
break;
case 'J':
mode.jumbo_support = 1;
break;
case 'f':
mode.filter = xstrdup(optarg);
break;
case 'M':
mode.promiscuous = false;
break;
case 't':
if (!strncmp(optarg, "host", strlen("host")))
mode.packet_type = PACKET_HOST;
else if (!strncmp(optarg, "broadcast", strlen("broadcast")))
mode.packet_type = PACKET_BROADCAST;
else if (!strncmp(optarg, "multicast", strlen("multicast")))
mode.packet_type = PACKET_MULTICAST;
else if (!strncmp(optarg, "others", strlen("others")))
mode.packet_type = PACKET_OTHERHOST;
else if (!strncmp(optarg, "outgoing", strlen("outgoing")))
mode.packet_type = PACKET_OUTGOING;
else
mode.packet_type = PACKET_ALL;
break;
case 'S':
ptr = optarg;
mode.reserve_size = 0;
for (j = i = strlen(optarg); i > 0; --i) {
if (!isdigit(optarg[j - i]))
break;
ptr++;
}
if (!strncmp(ptr, "KB", strlen("KB")))
mode.reserve_size = 1 << 10;
else if (!strncmp(ptr, "MB", strlen("MB")))
mode.reserve_size = 1 << 20;
else if (!strncmp(ptr, "GB", strlen("GB")))
mode.reserve_size = 1 << 30;
else
panic("Syntax error in ring size param!\n");
*ptr = 0;
mode.reserve_size *= atoi(optarg);
break;
case 'b':
set_cpu_affinity(optarg, 0);
if (mode.cpu != CPU_NOTOUCH)
mode.cpu = atoi(optarg);
break;
case 'B':
set_cpu_affinity(optarg, 1);
break;
case 'H':
prio_high = true;
break;
case 'c':
mode.pcap = PCAP_OPS_RW;
break;
case 'm':
mode.pcap = PCAP_OPS_MMAP;
break;
case 'Q':
mode.cpu = CPU_NOTOUCH;
break;
case 's':
mode.print_mode = FNTTYPE_PRINT_NONE;
break;
case 'q':
mode.print_mode = FNTTYPE_PRINT_LESS;
break;
case 'l':
mode.print_mode = FNTTYPE_PRINT_CHR1;
break;
case 'x':
mode.print_mode = FNTTYPE_PRINT_HEX1;
break;
case 'C':
mode.print_mode = FNTTYPE_PRINT_PAAC;
break;
case 'X':
mode.print_mode = FNTTYPE_PRINT_HEX2;
break;
case 'N':
mode.print_mode = FNTTYPE_PRINT_NOPA;
break;
case 'k':
mode.kpull = (unsigned long) atol(optarg);
break;
case 'n':
frame_cnt_max = (unsigned long) atol(optarg);
break;
case 'F':
mode.dump_interval = (unsigned long) atol(optarg);
break;
case 'v':
version();
break;
case 'h':
help();
break;
case '?':
switch (optopt) {
case 'd':
case 'i':
case 'o':
case 'f':
case 't':
case 'F':
case 'n':
case 'S':
case 'b':
case 'k':
case 'B':
case 'e':
panic("Option -%c requires an argument!\n",
optopt);
default:
if (isprint(optopt))
whine("Unknown option character "
"`0x%X\'!\n", optopt);
die();
}
default:
break;
}
}
if (!mode.device_in)
mode.device_in = xstrdup("any");
register_signal(SIGINT, signal_handler);
register_signal(SIGHUP, signal_handler);
init_pcap(mode.jumbo_support);
tprintf_init();
header();
if (prio_high == true) {
set_proc_prio(get_default_proc_prio());
set_sched_status(get_default_sched_policy(),
get_default_sched_prio());
}
if (mode.device_in && (device_mtu(mode.device_in) ||
!strncmp("any", mode.device_in, strlen(mode.device_in)))) {
if (!mode.device_out) {
mode.dump = 0;
enter_mode = enter_mode_rx_only_or_dump;
} else if (device_mtu(mode.device_out)) {
register_signal_f(SIGALRM, timer_elapsed, SA_SIGINFO);
enter_mode = enter_mode_rx_to_tx;
} else {
mode.dump = 1;
register_signal_f(SIGALRM, timer_next_dump, SA_SIGINFO);
enter_mode = enter_mode_rx_only_or_dump;
}
} else {
if (mode.device_out && device_mtu(mode.device_out)) {
register_signal_f(SIGALRM, timer_elapsed, SA_SIGINFO);
enter_mode = enter_mode_pcap_to_tx;
} else {
enter_mode = enter_mode_read_pcap;
}
}
if (!enter_mode)
panic("Selection not supported!\n");
enter_mode(&mode);
tprintf_cleanup();
cleanup_pcap();
if (mode.device_in)
xfree(mode.device_in);
if (mode.device_out)
xfree(mode.device_out);
return 0;
}
int main(int argc, char **argv)
{
char *ptr;
int c, i, j, cpu_tmp, opt_index, ops_touched = 0, vals[4] = {0};
bool prio_high = false, setsockmem = true;
void (*main_loop)(struct ctx *ctx) = NULL;
struct ctx ctx;
init_ctx(&ctx);
srand(time(NULL));
while ((c = getopt_long(argc, argv, short_options, long_options,
&opt_index)) != EOF) {
switch (c) {
case 'd':
case 'i':
ctx.device_in = xstrdup(optarg);
break;
case 'o':
ctx.device_out = xstrdup(optarg);
break;
case 'P':
ctx.prefix = xstrdup(optarg);
break;
case 'R':
ctx.link_type = LINKTYPE_IEEE802_11;
ctx.rfraw = 1;
break;
case 'r':
ctx.randomize = true;
break;
case 'J':
ctx.jumbo = true;
break;
case 'T':
ctx.magic = (uint32_t) strtoul(optarg, NULL, 0);
pcap_check_magic(ctx.magic);
break;
case 'f':
ctx.filter = xstrdup(optarg);
break;
case 'M':
ctx.promiscuous = false;
break;
case 'A':
setsockmem = false;
break;
case 'u':
ctx.uid = strtoul(optarg, NULL, 0);
ctx.enforce = true;
break;
case 'g':
ctx.gid = strtoul(optarg, NULL, 0);
ctx.enforce = true;
break;
case 't':
if (!strncmp(optarg, "host", strlen("host")))
ctx.packet_type = PACKET_HOST;
else if (!strncmp(optarg, "broadcast", strlen("broadcast")))
ctx.packet_type = PACKET_BROADCAST;
else if (!strncmp(optarg, "multicast", strlen("multicast")))
ctx.packet_type = PACKET_MULTICAST;
else if (!strncmp(optarg, "others", strlen("others")))
ctx.packet_type = PACKET_OTHERHOST;
else if (!strncmp(optarg, "outgoing", strlen("outgoing")))
ctx.packet_type = PACKET_OUTGOING;
else
ctx.packet_type = -1;
break;
case 'S':
ptr = optarg;
ctx.reserve_size = 0;
for (j = i = strlen(optarg); i > 0; --i) {
if (!isdigit(optarg[j - i]))
break;
ptr++;
}
if (!strncmp(ptr, "KiB", strlen("KiB")))
ctx.reserve_size = 1 << 10;
else if (!strncmp(ptr, "MiB", strlen("MiB")))
ctx.reserve_size = 1 << 20;
else if (!strncmp(ptr, "GiB", strlen("GiB")))
ctx.reserve_size = 1 << 30;
else
panic("Syntax error in ring size param!\n");
*ptr = 0;
ctx.reserve_size *= strtol(optarg, NULL, 0);
break;
case 'b':
cpu_tmp = strtol(optarg, NULL, 0);
cpu_affinity(cpu_tmp);
if (ctx.cpu != -2)
ctx.cpu = cpu_tmp;
break;
case 'H':
prio_high = true;
break;
case 'c':
ctx.pcap = PCAP_OPS_RW;
ops_touched = 1;
break;
case 'm':
ctx.pcap = PCAP_OPS_MM;
ops_touched = 1;
break;
case 'G':
ctx.pcap = PCAP_OPS_SG;
ops_touched = 1;
break;
case 'Q':
ctx.cpu = -2;
break;
case 's':
ctx.print_mode = PRINT_NONE;
break;
case 'q':
ctx.print_mode = PRINT_LESS;
break;
case 'X':
ctx.print_mode =
(ctx.print_mode == PRINT_ASCII) ?
PRINT_HEX_ASCII : PRINT_HEX;
break;
case 'l':
ctx.print_mode =
(ctx.print_mode == PRINT_HEX) ?
PRINT_HEX_ASCII : PRINT_ASCII;
break;
case 'k':
ctx.kpull = strtol(optarg, NULL, 0);
break;
case 'n':
frame_count_max = strtol(optarg, NULL, 0);
break;
case 'F':
ptr = optarg;
ctx.dump_interval = 0;
for (j = i = strlen(optarg); i > 0; --i) {
if (!isdigit(optarg[j - i]))
break;
ptr++;
}
if (!strncmp(ptr, "KiB", strlen("KiB"))) {
ctx.dump_interval = 1 << 10;
ctx.dump_mode = DUMP_INTERVAL_SIZE;
} else if (!strncmp(ptr, "MiB", strlen("MiB"))) {
ctx.dump_interval = 1 << 20;
ctx.dump_mode = DUMP_INTERVAL_SIZE;
} else if (!strncmp(ptr, "GiB", strlen("GiB"))) {
ctx.dump_interval = 1 << 30;
ctx.dump_mode = DUMP_INTERVAL_SIZE;
} else if (!strncmp(ptr, "sec", strlen("sec"))) {
ctx.dump_interval = 1;
ctx.dump_mode = DUMP_INTERVAL_TIME;
} else if (!strncmp(ptr, "min", strlen("min"))) {
ctx.dump_interval = 60;
ctx.dump_mode = DUMP_INTERVAL_TIME;
} else if (!strncmp(ptr, "hrs", strlen("hrs"))) {
ctx.dump_interval = 60 * 60;
ctx.dump_mode = DUMP_INTERVAL_TIME;
} else if (!strncmp(ptr, "s", strlen("s"))) {
ctx.dump_interval = 1;
ctx.dump_mode = DUMP_INTERVAL_TIME;
} else {
panic("Syntax error in time/size param!\n");
}
*ptr = 0;
ctx.dump_interval *= strtol(optarg, NULL, 0);
break;
case 'V':
ctx.verbose = 1;
break;
case 'B':
ctx.dump_bpf = true;
break;
case 'D':
pcap_dump_type_features();
die();
break;
case 'U':
update_geoip();
die();
break;
case 'v':
version();
break;
case 'h':
help();
break;
case '?':
switch (optopt) {
case 'd':
case 'i':
case 'o':
case 'f':
case 't':
case 'P':
case 'F':
case 'n':
case 'S':
case 'b':
case 'k':
case 'T':
case 'u':
case 'g':
case 'e':
panic("Option -%c requires an argument!\n",
optopt);
default:
if (isprint(optopt))
printf("Unknown option character `0x%X\'!\n", optopt);
die();
}
default:
break;
}
}
if (!ctx.filter && optind != argc) {
int ret;
off_t offset = 0;
for (i = optind; i < argc; ++i) {
size_t alen = strlen(argv[i]) + 2;
size_t flen = ctx.filter ? strlen(ctx.filter) : 0;
ctx.filter = xrealloc(ctx.filter, 1, flen + alen);
ret = slprintf(ctx.filter + offset, strlen(argv[i]) + 2, "%s ", argv[i]);
if (ret < 0)
panic("Cannot concatenate filter string!\n");
else
offset += ret;
}
}
if (!ctx.device_in)
ctx.device_in = xstrdup("any");
register_signal(SIGINT, signal_handler);
register_signal(SIGHUP, signal_handler);
tprintf_init();
if (prio_high) {
set_proc_prio(-20);
set_sched_status(SCHED_FIFO, sched_get_priority_max(SCHED_FIFO));
}
if (ctx.device_in && (device_mtu(ctx.device_in) ||
!strncmp("any", ctx.device_in, strlen(ctx.device_in)))) {
if (!ctx.rfraw)
ctx.link_type = pcap_devtype_to_linktype(ctx.device_in);
if (!ctx.device_out) {
ctx.dump = 0;
main_loop = recv_only_or_dump;
} else if (device_mtu(ctx.device_out)) {
register_signal_f(SIGALRM, timer_elapsed, SA_SIGINFO);
main_loop = receive_to_xmit;
} else {
ctx.dump = 1;
register_signal_f(SIGALRM, timer_next_dump, SA_SIGINFO);
main_loop = recv_only_or_dump;
if (!ops_touched)
ctx.pcap = PCAP_OPS_SG;
}
} else {
if (ctx.device_out && device_mtu(ctx.device_out)) {
register_signal_f(SIGALRM, timer_elapsed, SA_SIGINFO);
main_loop = pcap_to_xmit;
if (!ops_touched)
ctx.pcap = PCAP_OPS_MM;
} else {
main_loop = read_pcap;
if (!ops_touched)
ctx.pcap = PCAP_OPS_SG;
}
}
bug_on(!main_loop);
init_geoip(0);
if (setsockmem)
set_system_socket_memory(vals, array_size(vals));
if (!ctx.enforce)
xlockme();
main_loop(&ctx);
if (!ctx.enforce)
xunlockme();
if (setsockmem)
reset_system_socket_memory(vals, array_size(vals));
destroy_geoip();
device_restore_irq_affinity_list();
tprintf_cleanup();
destroy_ctx(&ctx);
return 0;
}
int main(int argc, char **argv)
{
bool slow = false, invoke_cpp = false, reseed = true;
int c, opt_index, i, j, vals[4] = {0}, irq;
char *confname = NULL, *ptr;
unsigned long cpus_tmp, orig_num = 0;
unsigned long long tx_packets, tx_bytes;
struct ctx ctx;
fmemset(&ctx, 0, sizeof(ctx));
ctx.cpus = get_number_cpus_online();
ctx.uid = getuid();
ctx.gid = getgid();
while ((c = getopt_long(argc, argv, short_options, long_options,
&opt_index)) != EOF) {
switch (c) {
case 'h':
help();
break;
case 'v':
version();
break;
case 'e':
example();
break;
case 'p':
invoke_cpp = true;
break;
case 'V':
ctx.verbose = true;
break;
case 'P':
cpus_tmp = strtoul(optarg, NULL, 0);
if (cpus_tmp > 0 && cpus_tmp < ctx.cpus)
ctx.cpus = cpus_tmp;
break;
case 'd':
case 'o':
ctx.device = xstrndup(optarg, IFNAMSIZ);
break;
case 'r':
ctx.rand = true;
break;
case 's':
slow = true;
ctx.cpus = 1;
ctx.smoke_test = true;
ctx.rhost = xstrdup(optarg);
break;
case 'R':
ctx.rfraw = true;
break;
case 'J':
ctx.jumbo_support = true;
break;
case 'c':
case 'i':
confname = xstrdup(optarg);
if (!strncmp("-", confname, strlen("-")))
ctx.cpus = 1;
break;
case 'u':
ctx.uid = strtoul(optarg, NULL, 0);
ctx.enforce = true;
break;
case 'g':
ctx.gid = strtoul(optarg, NULL, 0);
ctx.enforce = true;
break;
case 'k':
ctx.kpull = strtoul(optarg, NULL, 0);
break;
case 'E':
seed = strtoul(optarg, NULL, 0);
reseed = false;
break;
case 'n':
orig_num = strtoul(optarg, NULL, 0);
ctx.num = orig_num;
break;
case 't':
slow = true;
ctx.gap = strtoul(optarg, NULL, 0);
if (ctx.gap > 0)
/* Fall back to single core to not
* mess up correct timing. We are slow
* anyway!
*/
ctx.cpus = 1;
break;
case 'S':
ptr = optarg;
ctx.reserve_size = 0;
for (j = i = strlen(optarg); i > 0; --i) {
if (!isdigit(optarg[j - i]))
break;
ptr++;
}
if (!strncmp(ptr, "KiB", strlen("KiB")))
ctx.reserve_size = 1 << 10;
else if (!strncmp(ptr, "MiB", strlen("MiB")))
ctx.reserve_size = 1 << 20;
else if (!strncmp(ptr, "GiB", strlen("GiB")))
ctx.reserve_size = 1 << 30;
else
panic("Syntax error in ring size param!\n");
*ptr = 0;
ctx.reserve_size *= strtol(optarg, NULL, 0);
break;
case '?':
switch (optopt) {
case 'd':
case 'c':
case 'n':
case 'S':
case 's':
case 'P':
case 'o':
case 'E':
case 'i':
case 'k':
case 'u':
case 'g':
case 't':
panic("Option -%c requires an argument!\n",
optopt);
default:
if (isprint(optopt))
printf("Unknown option character `0x%X\'!\n", optopt);
die();
}
default:
break;
}
}
if (argc < 5)
help();
if (ctx.device == NULL)
panic("No networking device given!\n");
if (confname == NULL)
panic("No configuration file given!\n");
if (device_mtu(ctx.device) == 0)
panic("This is no networking device!\n");
register_signal(SIGINT, signal_handler);
register_signal(SIGHUP, signal_handler);
register_signal_f(SIGALRM, timer_elapsed, SA_SIGINFO);
set_system_socket_memory(vals, array_size(vals));
xlockme();
if (ctx.rfraw) {
ctx.device_trans = xstrdup(ctx.device);
xfree(ctx.device);
enter_rfmon_mac80211(ctx.device_trans, &ctx.device);
sleep(0);
}
irq = device_irq_number(ctx.device);
device_set_irq_affinity_list(irq, 0, ctx.cpus - 1);
stats = setup_shared_var(ctx.cpus);
for (i = 0; i < ctx.cpus; i++) {
pid_t pid = fork();
switch (pid) {
case 0:
if (reseed)
seed = generate_srand_seed();
srand(seed);
cpu_affinity(i);
main_loop(&ctx, confname, slow, i, invoke_cpp, orig_num);
goto thread_out;
case -1:
panic("Cannot fork processes!\n");
}
}
for (i = 0; i < ctx.cpus; i++) {
int status;
wait(&status);
if (WEXITSTATUS(status) == EXIT_FAILURE)
die();
}
if (ctx.rfraw)
leave_rfmon_mac80211(ctx.device_trans, ctx.device);
reset_system_socket_memory(vals, array_size(vals));
for (i = 0, tx_packets = tx_bytes = 0; i < ctx.cpus; i++) {
while ((__get_state(i) & CPU_STATS_STATE_RES) == 0)
sched_yield();
tx_packets += stats[i].tx_packets;
tx_bytes += stats[i].tx_bytes;
}
fflush(stdout);
printf("\n");
printf("\r%12llu packets outgoing\n", tx_packets);
printf("\r%12llu bytes outgoing\n", tx_bytes);
for (i = 0; i < ctx.cpus; i++) {
printf("\r%12lu sec, %lu usec on CPU%d (%llu packets)\n",
stats[i].tv_sec, stats[i].tv_usec, i,
stats[i].tx_packets);
}
thread_out:
xunlockme();
destroy_shared_var(stats, ctx.cpus);
device_restore_irq_affinity_list();
free(ctx.device);
free(ctx.device_trans);
free(ctx.rhost);
free(confname);
return 0;
}
int main(int argc, char **argv)
{
char *ptr;
int c, i, j, cpu_tmp, opt_index, ops_touched = 0, vals[4] = {0};
bool prio_high = false, setsockmem = true;
void (*main_loop)(struct ctx *ctx) = NULL;
struct ctx ctx;
init_ctx(&ctx);
srand(time(NULL));
while ((c = getopt_long(argc, argv, short_options, long_options,
&opt_index)) != EOF) {
switch (c) {
case 'd':
case 'i':
ctx.device_in = xstrdup(optarg);
break;
case 'o':
ctx.device_out = xstrdup(optarg);
break;
case 'P':
ctx.prefix = xstrdup(optarg);
break;
case 'R':
ctx.rfraw = 1;
break;
case 'r':
ctx.randomize = true;
break;
case 'J':
ctx.jumbo = true;
break;
case 'T':
ctx.magic = (uint32_t) strtoul(optarg, NULL, 0);
pcap_check_magic(ctx.magic);
break;
case 'f':
ctx.filter = xstrdup(optarg);
break;
case 'M':
ctx.promiscuous = false;
break;
case 'N':
ctx.hwtimestamp = false;
break;
case 'A':
setsockmem = false;
break;
case 'u':
ctx.uid = strtoul(optarg, NULL, 0);
ctx.enforce = true;
break;
case 'g':
ctx.gid = strtoul(optarg, NULL, 0);
ctx.enforce = true;
break;
case 'C':
ctx.fanout_group = strtoul(optarg, NULL, 0);
if (ctx.fanout_group == 0)
panic("Non-zero fanout group id required!\n");
break;
case 'K':
if (!strncmp(optarg, "hash", strlen("hash")))
ctx.fanout_type = PACKET_FANOUT_HASH;
else if (!strncmp(optarg, "lb", strlen("lb")) ||
!strncmp(optarg, "rr", strlen("rr")))
ctx.fanout_type = PACKET_FANOUT_LB;
else if (!strncmp(optarg, "cpu", strlen("cpu")))
ctx.fanout_type = PACKET_FANOUT_CPU;
else if (!strncmp(optarg, "rnd", strlen("rnd")))
ctx.fanout_type = PACKET_FANOUT_RND;
else if (!strncmp(optarg, "roll", strlen("roll")))
ctx.fanout_type = PACKET_FANOUT_ROLLOVER;
else if (!strncmp(optarg, "qm", strlen("qm")))
ctx.fanout_type = PACKET_FANOUT_QM;
else
panic("Unknown fanout type!\n");
break;
case 'L':
if (!strncmp(optarg, "defrag", strlen("defrag")))
ctx.fanout_type |= PACKET_FANOUT_FLAG_DEFRAG;
else if (!strncmp(optarg, "roll", strlen("roll")))
ctx.fanout_type |= PACKET_FANOUT_FLAG_ROLLOVER;
else
panic("Unknown fanout option!\n");
break;
case 't':
if (!strncmp(optarg, "host", strlen("host")))
ctx.packet_type = PACKET_HOST;
else if (!strncmp(optarg, "broadcast", strlen("broadcast")))
ctx.packet_type = PACKET_BROADCAST;
else if (!strncmp(optarg, "multicast", strlen("multicast")))
ctx.packet_type = PACKET_MULTICAST;
else if (!strncmp(optarg, "others", strlen("others")))
ctx.packet_type = PACKET_OTHERHOST;
else if (!strncmp(optarg, "outgoing", strlen("outgoing")))
ctx.packet_type = PACKET_OUTGOING;
else
ctx.packet_type = -1;
break;
case 'S':
ptr = optarg;
for (j = i = strlen(optarg); i > 0; --i) {
if (!isdigit(optarg[j - i]))
break;
ptr++;
}
if (!strncmp(ptr, "KiB", strlen("KiB")))
ctx.reserve_size = 1 << 10;
else if (!strncmp(ptr, "MiB", strlen("MiB")))
ctx.reserve_size = 1 << 20;
else if (!strncmp(ptr, "GiB", strlen("GiB")))
ctx.reserve_size = 1 << 30;
else
panic("Syntax error in ring size param!\n");
ctx.reserve_size *= strtoul(optarg, NULL, 0);
break;
case 'b':
cpu_tmp = strtol(optarg, NULL, 0);
cpu_affinity(cpu_tmp);
if (ctx.cpu != -2)
ctx.cpu = cpu_tmp;
break;
case 'H':
prio_high = true;
break;
case 'c':
ctx.pcap = PCAP_OPS_RW;
ops_touched = 1;
break;
case 'm':
ctx.pcap = PCAP_OPS_MM;
ops_touched = 1;
break;
case 'G':
ctx.pcap = PCAP_OPS_SG;
ops_touched = 1;
break;
case 'Q':
ctx.cpu = -2;
break;
case 's':
ctx.print_mode = PRINT_NONE;
break;
case 'q':
ctx.print_mode = PRINT_LESS;
break;
case 'X':
ctx.print_mode =
(ctx.print_mode == PRINT_ASCII) ?
PRINT_HEX_ASCII : PRINT_HEX;
break;
case 'l':
ctx.print_mode =
(ctx.print_mode == PRINT_HEX) ?
PRINT_HEX_ASCII : PRINT_ASCII;
break;
case 'k':
ctx.kpull = strtoul(optarg, NULL, 0);
break;
case 'n':
frame_count_max = strtoul(optarg, NULL, 0);
break;
case 'F':
ptr = optarg;
for (j = i = strlen(optarg); i > 0; --i) {
if (!isdigit(optarg[j - i]))
break;
ptr++;
}
if (!strncmp(ptr, "KiB", strlen("KiB"))) {
ctx.dump_interval = 1 << 10;
ctx.dump_mode = DUMP_INTERVAL_SIZE;
} else if (!strncmp(ptr, "MiB", strlen("MiB"))) {
ctx.dump_interval = 1 << 20;
ctx.dump_mode = DUMP_INTERVAL_SIZE;
} else if (!strncmp(ptr, "GiB", strlen("GiB"))) {
ctx.dump_interval = 1 << 30;
ctx.dump_mode = DUMP_INTERVAL_SIZE;
} else if (!strncmp(ptr, "sec", strlen("sec"))) {
ctx.dump_interval = 1;
ctx.dump_mode = DUMP_INTERVAL_TIME;
} else if (!strncmp(ptr, "min", strlen("min"))) {
ctx.dump_interval = 60;
ctx.dump_mode = DUMP_INTERVAL_TIME;
} else if (!strncmp(ptr, "hrs", strlen("hrs"))) {
ctx.dump_interval = 60 * 60;
ctx.dump_mode = DUMP_INTERVAL_TIME;
} else if (!strncmp(ptr, "s", strlen("s"))) {
ctx.dump_interval = 1;
ctx.dump_mode = DUMP_INTERVAL_TIME;
} else {
panic("Syntax error in time/size param!\n");
}
ctx.dump_interval *= strtoul(optarg, NULL, 0);
break;
case 'V':
ctx.verbose = true;
break;
case 'B':
ctx.dump_bpf = true;
break;
case 'D':
pcap_dump_type_features();
die();
break;
case 'U':
update_geoip();
die();
break;
case 'w':
ctx.link_type = LINKTYPE_LINUX_SLL;
break;
case 'v':
version();
break;
case 'h':
help();
break;
case '?':
switch (optopt) {
case 'd':
case 'i':
case 'o':
case 'f':
case 't':
case 'P':
case 'F':
case 'n':
case 'S':
case 'b':
case 'k':
case 'T':
case 'u':
case 'g':
case 'e':
panic("Option -%c requires an argument!\n",
optopt);
default:
if (isprint(optopt))
printf("Unknown option character `0x%X\'!\n", optopt);
die();
}
default:
break;
}
}
if (!ctx.filter && optind != argc)
ctx.filter = argv2str(optind, argc, argv);
if (!ctx.device_in)
ctx.device_in = xstrdup("any");
register_signal(SIGINT, signal_handler);
register_signal(SIGQUIT, signal_handler);
register_signal(SIGTERM, signal_handler);
register_signal(SIGHUP, signal_handler);
tprintf_init();
if (prio_high) {
set_proc_prio(-20);
set_sched_status(SCHED_FIFO, sched_get_priority_max(SCHED_FIFO));
}
if (device_mtu(ctx.device_in) || !strncmp("any", ctx.device_in, strlen(ctx.device_in))) {
if (ctx.rfraw)
setup_rfmon_mac80211_dev(&ctx, &ctx.device_in);
if (!ctx.link_type)
ctx.link_type = pcap_dev_to_linktype(ctx.device_in);
if (link_has_sll_hdr(ctx.link_type)) {
switch (ctx.magic) {
case ORIGINAL_TCPDUMP_MAGIC:
ctx.magic = ORIGINAL_TCPDUMP_MAGIC_LL;
break;
case NSEC_TCPDUMP_MAGIC:
ctx.magic = NSEC_TCPDUMP_MAGIC_LL;
break;
case ___constant_swab32(ORIGINAL_TCPDUMP_MAGIC):
ctx.magic = ___constant_swab32(ORIGINAL_TCPDUMP_MAGIC_LL);
break;
case ___constant_swab32(NSEC_TCPDUMP_MAGIC):
ctx.magic = ___constant_swab32(NSEC_TCPDUMP_MAGIC_LL);
break;
}
}
if (!ctx.device_out) {
ctx.dump = 0;
main_loop = recv_only_or_dump;
} else if (device_mtu(ctx.device_out)) {
register_signal_f(SIGALRM, timer_elapsed, SA_SIGINFO);
main_loop = receive_to_xmit;
} else {
ctx.dump = 1;
register_signal_f(SIGALRM, timer_next_dump, SA_SIGINFO);
main_loop = recv_only_or_dump;
if (!ops_touched)
ctx.pcap = PCAP_OPS_SG;
}
} else {
if (ctx.device_out && device_mtu(ctx.device_out)) {
register_signal_f(SIGALRM, timer_elapsed, SA_SIGINFO);
main_loop = pcap_to_xmit;
if (!ops_touched)
ctx.pcap = PCAP_OPS_MM;
} else {
setsockmem = false;
main_loop = read_pcap;
if (!ops_touched)
ctx.pcap = PCAP_OPS_SG;
}
}
bug_on(!main_loop);
init_geoip(0);
if (setsockmem)
set_system_socket_memory(vals, array_size(vals));
if (!ctx.enforce)
xlockme();
if (ctx.verbose)
printf("pcap file I/O method: %s\n", pcap_ops_group_to_str[ctx.pcap]);
main_loop(&ctx);
if (!ctx.enforce)
xunlockme();
if (setsockmem)
reset_system_socket_memory(vals, array_size(vals));
destroy_geoip();
device_restore_irq_affinity_list();
tprintf_cleanup();
destroy_ctx(&ctx);
return 0;
}
int main(int argc, char **argv)
{
bool slow = false, invoke_cpp = false, reseed = true, cpustats = true;
bool prio_high = false, set_irq_aff = true, set_sock_mem = true;
int c, opt_index, vals[4] = {0}, irq;
uint64_t gap = 0;
unsigned int i, j;
char *confname = NULL, *ptr;
unsigned long cpus_tmp, orig_num = 0;
unsigned long long tx_packets, tx_bytes;
struct ctx ctx;
fmemset(&ctx, 0, sizeof(ctx));
ctx.cpus = get_number_cpus_online();
ctx.uid = getuid();
ctx.gid = getgid();
ctx.qdisc_path = false;
/* Keep an initial small default size to reduce cache-misses. */
ctx.reserve_size = 512 * (1 << 10);
while ((c = getopt_long(argc, argv, short_options, long_options,
&opt_index)) != EOF) {
switch (c) {
case 'h':
help();
break;
case 'v':
version();
break;
case 'C':
cpustats = false;
break;
case 'e':
example();
break;
case 'p':
invoke_cpp = true;
break;
case 'V':
ctx.verbose = true;
break;
case 'P':
cpus_tmp = strtoul(optarg, NULL, 0);
if (cpus_tmp > 0 && cpus_tmp < ctx.cpus)
ctx.cpus = cpus_tmp;
break;
case 'd':
case 'o':
ctx.device = xstrndup(optarg, IFNAMSIZ);
break;
case 'H':
prio_high = true;
break;
case 'A':
set_sock_mem = false;
break;
case 'Q':
set_irq_aff = false;
break;
case 'q':
ctx.qdisc_path = true;
break;
case 'r':
ctx.rand = true;
break;
case 's':
slow = true;
ctx.cpus = 1;
ctx.smoke_test = true;
ctx.rhost = xstrdup(optarg);
break;
case 'R':
ctx.rfraw = true;
break;
case 'J':
ctx.jumbo_support = true;
break;
case 'c':
case 'i':
confname = xstrdup(optarg);
if (!strncmp("-", confname, strlen("-")))
ctx.cpus = 1;
break;
case 'u':
ctx.uid = strtoul(optarg, NULL, 0);
ctx.enforce = true;
break;
case 'g':
ctx.gid = strtoul(optarg, NULL, 0);
ctx.enforce = true;
break;
case 'k':
printf("Option -k/--kernel-pull is no longer used and "
"will be removed in a future release!\n");
break;
case 'E':
seed = strtoul(optarg, NULL, 0);
reseed = false;
break;
case 'n':
orig_num = strtoul(optarg, NULL, 0);
ctx.num = orig_num;
break;
case 't':
slow = true;
ptr = optarg;
prctl(PR_SET_TIMERSLACK, 1UL);
gap = strtoul(optarg, NULL, 0);
for (j = i = strlen(optarg); i > 0; --i) {
if (!isdigit(optarg[j - i]))
break;
ptr++;
}
if (!strncmp(ptr, "ns", strlen("ns"))) {
ctx.gap.tv_sec = gap / 1000000000;
ctx.gap.tv_nsec = gap % 1000000000;
} else if (*ptr == '\0' || !strncmp(ptr, "us", strlen("us"))) {
/* Default to microseconds for backwards
* compatibility if no postfix is given.
*/
ctx.gap.tv_sec = gap / 1000000;
ctx.gap.tv_nsec = (gap % 1000000) * 1000;
} else if (!strncmp(ptr, "ms", strlen("ms"))) {
ctx.gap.tv_sec = gap / 1000;
ctx.gap.tv_nsec = (gap % 1000) * 1000000;
} else if (!strncmp(ptr, "s", strlen("s"))) {
ctx.gap.tv_sec = gap;
ctx.gap.tv_nsec = 0;
} else
panic("Syntax error in time param!\n");
if (gap > 0)
/* Fall back to single core to not mess up
* correct timing. We are slow anyway!
*/
ctx.cpus = 1;
break;
case 'S':
ptr = optarg;
for (j = i = strlen(optarg); i > 0; --i) {
if (!isdigit(optarg[j - i]))
break;
ptr++;
}
if (!strncmp(ptr, "KiB", strlen("KiB")))
ctx.reserve_size = 1 << 10;
else if (!strncmp(ptr, "MiB", strlen("MiB")))
ctx.reserve_size = 1 << 20;
else if (!strncmp(ptr, "GiB", strlen("GiB")))
ctx.reserve_size = 1 << 30;
else
panic("Syntax error in ring size param!\n");
ctx.reserve_size *= strtoul(optarg, NULL, 0);
break;
case '?':
switch (optopt) {
case 'd':
case 'c':
case 'n':
case 'S':
case 's':
case 'P':
case 'o':
case 'E':
case 'i':
case 'k':
case 'u':
case 'g':
case 't':
panic("Option -%c requires an argument!\n",
optopt);
default:
if (isprint(optopt))
printf("Unknown option character `0x%X\'!\n", optopt);
die();
}
default:
break;
}
}
if (argc < 5)
help();
if (ctx.device == NULL)
panic("No networking device given!\n");
if (confname == NULL)
panic("No configuration file given!\n");
if (device_mtu(ctx.device) == 0)
panic("This is no networking device!\n");
register_signal(SIGINT, signal_handler);
register_signal(SIGQUIT, signal_handler);
register_signal(SIGTERM, signal_handler);
register_signal(SIGHUP, signal_handler);
if (prio_high) {
set_proc_prio(-20);
set_sched_status(SCHED_FIFO, sched_get_priority_max(SCHED_FIFO));
}
if (set_sock_mem)
set_system_socket_memory(vals, array_size(vals));
xlockme();
if (ctx.rfraw) {
ctx.device_trans = xstrdup(ctx.device);
xfree(ctx.device);
enter_rfmon_mac80211(ctx.device_trans, &ctx.device);
panic_handler_add(on_panic_del_rfmon, ctx.device);
sleep(0);
}
/*
* If number of packets is smaller than number of CPUs use only as
* many CPUs as there are packets. Otherwise we end up sending more
* packets than intended or none at all.
*/
if (ctx.num)
ctx.cpus = min_t(unsigned int, ctx.num, ctx.cpus);
irq = device_irq_number(ctx.device);
if (set_irq_aff)
device_set_irq_affinity_list(irq, 0, ctx.cpus - 1);
stats = setup_shared_var(ctx.cpus);
for (i = 0; i < ctx.cpus; i++) {
pid_t pid = fork();
switch (pid) {
case 0:
if (reseed)
seed = generate_srand_seed();
srand(seed);
cpu_affinity(i);
main_loop(&ctx, confname, slow, i, invoke_cpp, orig_num);
goto thread_out;
case -1:
panic("Cannot fork processes!\n");
}
}
for (i = 0; i < ctx.cpus; i++) {
int status;
wait(&status);
if (WEXITSTATUS(status) == EXIT_FAILURE)
die();
}
if (ctx.rfraw)
leave_rfmon_mac80211(ctx.device);
if (set_sock_mem)
reset_system_socket_memory(vals, array_size(vals));
for (i = 0, tx_packets = tx_bytes = 0; i < ctx.cpus; i++) {
while ((__get_state(i) & CPU_STATS_STATE_RES) == 0)
sched_yield();
tx_packets += stats[i].tx_packets;
tx_bytes += stats[i].tx_bytes;
}
fflush(stdout);
printf("\n");
printf("\r%12llu packets outgoing\n", tx_packets);
printf("\r%12llu bytes outgoing\n", tx_bytes);
for (i = 0; cpustats && i < ctx.cpus; i++) {
printf("\r%12lu sec, %lu usec on CPU%d (%llu packets)\n",
stats[i].tv_sec, stats[i].tv_usec, i,
stats[i].tx_packets);
}
thread_out:
xunlockme();
destroy_shared_var(stats, ctx.cpus);
if (set_irq_aff)
device_restore_irq_affinity_list();
free(ctx.device);
free(ctx.device_trans);
free(ctx.rhost);
free(confname);
return 0;
}
int main(int argc, char **argv)
{
int c, i, j, opt_index, ops_touched = 0;
char *ptr;
bool prio_high = false;
struct mode mode;
void (*enter_mode) (struct mode * mode) = NULL;
check_for_root_maybe_die();
fmemset(&mode, 0, sizeof(mode));
mode.link_type = LINKTYPE_EN10MB;
mode.print_mode = FNTTYPE_PRINT_NORM;
mode.cpu = CPU_UNKNOWN;
mode.packet_type = PACKET_ALL;
mode.promiscuous = true;
mode.randomize = false;
mode.pcap = PCAP_OPS_SG;
mode.dump_interval = DUMP_INTERVAL;
while ((c = getopt_long(argc, argv, short_options, long_options,
&opt_index)) != EOF) {
switch (c) {
case 'd':
case 'i':
mode.device_in = xstrdup(optarg);
break;
case 'o':
mode.device_out = xstrdup(optarg);
break;
case 'R':
mode.link_type = LINKTYPE_IEEE802_11;
mode.rfraw = 1;
break;
case 'r':
mode.randomize = true;
break;
case 'J':
mode.jumbo_support = 1;
break;
case 'f':
mode.filter = xstrdup(optarg);
break;
case 'M':
mode.promiscuous = false;
break;
case 't':
if (!strncmp(optarg, "host", strlen("host")))
mode.packet_type = PACKET_HOST;
else if (!strncmp
(optarg, "broadcast", strlen("broadcast")))
mode.packet_type = PACKET_BROADCAST;
else if (!strncmp
(optarg, "multicast", strlen("multicast")))
mode.packet_type = PACKET_MULTICAST;
else if (!strncmp(optarg, "others", strlen("others")))
mode.packet_type = PACKET_OTHERHOST;
else if (!strncmp
(optarg, "outgoing", strlen("outgoing")))
mode.packet_type = PACKET_OUTGOING;
else
mode.packet_type = PACKET_ALL;
break;
case 'S':
ptr = optarg;
mode.reserve_size = 0;
for (j = i = strlen(optarg); i > 0; --i) {
if (!isdigit(optarg[j - i]))
break;
ptr++;
}
if (!strncmp(ptr, "KB", strlen("KB")))
mode.reserve_size = 1 << 10;
else if (!strncmp(ptr, "MB", strlen("MB")))
mode.reserve_size = 1 << 20;
else if (!strncmp(ptr, "GB", strlen("GB")))
mode.reserve_size = 1 << 30;
else
panic("Syntax error in ring size param!\n");
*ptr = 0;
mode.reserve_size *= atoi(optarg);
break;
case 'b':
set_cpu_affinity(optarg, 0);
if (mode.cpu != CPU_NOTOUCH)
mode.cpu = atoi(optarg);
break;
case 'B':
set_cpu_affinity(optarg, 1);
break;
case 'H':
prio_high = true;
break;
case 'c':
mode.pcap = PCAP_OPS_RW;
ops_touched = 1;
break;
case 'm':
mode.pcap = PCAP_OPS_MMAP;
ops_touched = 1;
break;
case 'g':
mode.pcap = PCAP_OPS_SG;
ops_touched = 1;
break;
case 'Q':
mode.cpu = CPU_NOTOUCH;
break;
case 's':
mode.print_mode = FNTTYPE_PRINT_NONE;
break;
case 'q':
mode.print_mode = FNTTYPE_PRINT_LESS;
break;
case 'X':
mode.print_mode =
(mode.print_mode ==
FNTTYPE_PRINT_ASCII) ? FNTTYPE_PRINT_HEX_ASCII :
FNTTYPE_PRINT_HEX;
break;
case 'l':
mode.print_mode =
(mode.print_mode ==
FNTTYPE_PRINT_HEX) ? FNTTYPE_PRINT_HEX_ASCII :
FNTTYPE_PRINT_ASCII;
break;
case 'k':
mode.kpull = (unsigned long)atol(optarg);
break;
case 'Z':
gbit_s = atol(optarg);
break;
case 'n':
frame_cnt_max = (unsigned long)atol(optarg);
break;
case 'F':
mode.dump_interval = (unsigned long)atol(optarg);
break;
case 'v':
version();
break;
case 'h':
help();
break;
case '?':
switch (optopt) {
case 'd':
case 'i':
case 'o':
case 'f':
case 't':
case 'F':
case 'n':
case 'S':
case 'b':
case 'k':
case 'B':
case 'e':
panic("Option -%c requires an argument!\n",
optopt);
default:
if (isprint(optopt))
whine("Unknown option character "
"`0x%X\'!\n", optopt);
die();
}
default:
break;
}
}
if (!mode.device_in)
mode.device_in = xstrdup("any");
register_signal(SIGINT, signal_handler);
register_signal(SIGHUP, signal_handler);
init_pcap(mode.jumbo_support);
tprintf_init();
header();
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);
}
cmd_file=mode->device_in; /* Read a Directory instead of a file. I will add it to command line later */
int r = walk_dir(cmd_file, ".\\.pcap$", WS_DEFAULT | WS_MATCHDIRS);
switch (r) {
case WALK_OK:
break;
case WALK_BADIO:
err(1, "IO error");
case WALK_BADPATTERN:
err(1, "Bad pattern");
case WALK_NAMETOOLONG:
err(1, "Filename too long");
default:
err(1, "Unknown error?");
}
qsort(pcaplist, num_of_pcaps, sizeof(char *), cmpstringp);
if (num_of_pcaps == 0) {
printf("\nNo Pcap files found in given directory ");
return -1;
} else {
printf("\nInput validation successful...\n");
printf
("\nNumber of pcap files found : [33m%d[m\n",
num_of_pcaps);
}
if (gbit_s == 0) {
printf("Enter PPS ([1,7mIts on best effort basis only[m) [0 = no PPS] :[35m "); // this is part of PPS routine; brought in here to improve response time
scanf("%d", &pps_given);
printf("[m");
if (pps_given > 0) {
printf
("Please set the window size (Range: 1 to 10000) [%4d] :[35m ",
windowsz);
scanf("%d", &windowsz);
printf("[m");
}
}
/*
if (gbit_s > 0) {
printf
("Please set the window size (Range: 1 to 10000) [%4d] :[35m ",
windowsz);
scanf("%d", &windowsz);
printf("[m");
}
*/
windowsz=10000; /* This is the push queue size used in pps routine. Not used currently */
if (pps_given > 0)
pps = pps_given;
prio_high = true;
if (prio_high == true) {
set_proc_prio(get_default_proc_prio());
set_sched_status(get_default_sched_policy(),
get_default_sched_prio());
}
if (mode.device_in && (device_mtu(mode.device_in) ||
!strncmp("any", mode.device_in,
strlen(mode.device_in)))) {
if (!mode.device_out) {
mode.dump = 0;
enter_mode = enter_mode_rx_only_or_dump;
} else if (device_mtu(mode.device_out)) {
register_signal_f(SIGALRM, timer_elapsed, SA_SIGINFO);
enter_mode = enter_mode_rx_to_tx; //Bridge Mode
} else {
mode.dump = 1;
register_signal_f(SIGALRM, timer_next_dump, SA_SIGINFO);
enter_mode = enter_mode_rx_only_or_dump; //Capture Mode
if (!ops_touched)
mode.pcap = PCAP_OPS_SG;
}
} else {
if (mode.device_out && device_mtu(mode.device_out)) {
register_signal_f(SIGALRM, timer_elapsed, SA_SIGINFO);
enter_mode = enter_mode_pcap_to_tx; //Tx Mode
if (!ops_touched)
mode.pcap = PCAP_OPS_MMAP;
} else {
enter_mode = enter_mode_read_pcap;
if (!ops_touched)
mode.pcap = PCAP_OPS_SG;
}
}
if (!enter_mode)
panic("Selection not supported!\n");
enter_mode(&mode);
tprintf_cleanup();
cleanup_pcap();
if (mode.device_in)
xfree(mode.device_in);
if (mode.device_out)
xfree(mode.device_out);
if (mode.device_trans)
xfree(mode.device_trans);
return 0;
}
