syswonder
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rux-iperf
mirror of https://github.com/syswonder/rux-iperf
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yanjuguang 2023-12-27 16:32:42 +08:00
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1
.gitignore vendored Normal file
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@ -0,0 +1 @@
iperf-*

54
README.md Normal file
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# How to run iperf on Ruxos and benchmark network performance
## Build & run
Build and start the [`iperf3`](https://github.com/esnet/iperf) server on Ruxos:
```bash
# in ruxos root directory
make A=apps/c/iperf BLK=y NET=y ARCH=<arch> run
```
## Benchmark
In another shell, run the `iperf3` client:
* iperf on Ruxos as the receiver:
```bash
# TCP
iperf3 -c 127.0.0.1 -p 5555
# UDP
iperf3 -uc 127.0.0.1 -p 5555 -b <sender_bitrate> -l <buffer_len>
```
You need to set the `<sender_bitrate>` (in bits/sec) to avoid sending packets too fast from the client when use UDP.
* iperf on Ruxos as the sender:
```bash
# TCP
iperf3 -c 127.0.0.1 -p 5555 -R
# UDP
iperf3 -uc 127.0.0.1 -p 5555 -b 0 -l <buffer_len> -R
```
By default, the `<buffer_len>` is 128 KB for TCP and 8 KB for UDP. Larger buffer length may improve the performance. You can change it by the `-l` option of `iperf3`.
Note that if the `<buffer_len>` is greater than `1472` (total packet length is exceeded the MTU of the NIC) when use UDP, packets fragmentation will occur. You should enable fragmentation features in [smoltcp](https://github.com/smoltcp-rs/smoltcp):
```toml
# in ruxos/modules/axnet/Cargo.toml
[dependencies.smoltcp]
git = "https://github.com/smoltcp-rs/smoltcp.git"
rev = "1f9b9f0"
default-features = false
features = [
"medium-ethernet",
"proto-ipv4",
"socket-raw", "socket-icmp", "socket-udp", "socket-tcp", "socket-dns",
"fragmentation-buffer-size-65536", "proto-ipv4-fragmentation",
"reassembly-buffer-size-65536", "reassembly-buffer-count-32",
"assembler-max-segment-count-32",
]
```

32
axbuild.mk Normal file
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@ -0,0 +1,32 @@
IPERF_VERSION := 3.1.3
APP_CFLAGS := -Ulinux
iperf_pkg := iperf-$(IPERF_VERSION)
iperf_dir := $(APP)/$(iperf_pkg)
iperf_src := \
cjson.c \
iperf_api.c \
iperf_error.c \
iperf_client_api.c \
iperf_locale.c \
iperf_server_api.c \
iperf_tcp.c \
iperf_udp.c \
iperf_sctp.c \
iperf_util.c \
net.c \
tcp_info.c \
tcp_window_size.c \
timer.c \
units.c \
main_server.c
app-objs := $(patsubst %.c,$(iperf_pkg)/src/%.o,$(iperf_src))
.PRECIOUS: $(APP)/%.c
$(APP)/%.c:
@echo "Download iperf source code"
wget https://downloads.es.net/pub/iperf/$(iperf_pkg).tar.gz -P $(APP)
tar -zxvf $(APP)/$(iperf_pkg).tar.gz -C $(APP) && rm -f $(APP)/$(iperf_pkg).tar.gz
cd $(iperf_dir) && git init && git add .
patch -p1 -N -d $(iperf_dir) --no-backup-if-mismatch -r - < $(APP)/iperf.patch

7
features.txt Normal file
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alloc
paging
net
fs
blkfs
select
fp_simd

664
iperf.patch Normal file
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@ -0,0 +1,664 @@
diff --git a/src/cjson.c b/src/cjson.c
index 595d919..43264e6 100644
--- a/src/cjson.c
+++ b/src/cjson.c
@@ -105,7 +105,7 @@ void cJSON_Delete(cJSON *c)
/* Parse the input text to generate a number, and populate the result into item. */
static const char *parse_number(cJSON *item,const char *num)
{
- double n=0,sign=1,scale=0;int subscale=0,signsubscale=1;
+ double n=0,sign=1;int subscale=0,signsubscale=1,scale=0;
if (*num=='-') sign=-1,num++; /* Has sign? */
if (*num=='0') num++; /* is zero */
@@ -116,8 +116,11 @@ static const char *parse_number(cJSON *item,const char *num)
while (*num>='0' && *num<='9') subscale=(subscale*10)+(*num++ - '0'); /* Number? */
}
- n=sign*n*pow(10.0,(scale+subscale*signsubscale)); /* number = +/- number.fraction * 10^+/- exponent */
-
+ scale += subscale * signsubscale;
+ n = sign * n;
+ while (scale != 0)
+ { if (scale > 0) n *= 10.0,scale--; else n /= 10.0,scale++;
+ }
item->valuedouble=n;
item->valueint=(int64_t)n;
item->type=cJSON_Number;
diff --git a/src/iperf.h b/src/iperf.h
index 8ff25d7..4e96d9f 100755
--- a/src/iperf.h
+++ b/src/iperf.h
@@ -37,6 +37,7 @@
#include <sys/select.h>
#include <sys/socket.h>
#include <netinet/tcp.h>
+#include <stdio.h>
#if defined(HAVE_CPUSET_SETAFFINITY)
#include <sys/param.h>
diff --git a/src/iperf_api.c b/src/iperf_api.c
index 5b56af6..1e12a81 100755
--- a/src/iperf_api.c
+++ b/src/iperf_api.c
@@ -32,7 +32,6 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <getopt.h>
#include <errno.h>
#include <signal.h>
#include <unistd.h>
@@ -52,7 +51,6 @@
#include <sys/resource.h>
#include <sys/mman.h>
#include <sys/stat.h>
-#include <sched.h>
#include <setjmp.h>
#include <stdarg.h>
@@ -95,7 +93,7 @@ static cJSON *JSON_read(int fd);
void
usage()
{
- fputs(usage_shortstr, stderr);
+ puts(usage_shortstr);
}
@@ -613,6 +611,7 @@ iperf_on_test_finish(struct iperf_test *test)
/******************************************************************************/
+#if 0
int
iperf_parse_arguments(struct iperf_test *test, int argc, char **argv)
{
@@ -1035,6 +1034,7 @@ iperf_parse_arguments(struct iperf_test *test, int argc, char **argv)
return 0;
}
+#endif
int
iperf_set_send_state(struct iperf_test *test, signed char state)
@@ -2639,8 +2639,7 @@ 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);
+ free(sp->buffer);
if (sp->diskfile_fd >= 0)
close(sp->diskfile_fd);
for (irp = TAILQ_FIRST(&sp->result->interval_results); irp != NULL; irp = nirp) {
@@ -2691,35 +2690,10 @@ iperf_new_stream(struct iperf_test *test, int s)
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));
+ sp->buffer = (char *)malloc(test->settings->blksize);
+ srand(time(NULL));
for (i = 0; i < test->settings->blksize; ++i)
- sp->buffer[i] = random();
+ sp->buffer[i] = rand();
/* Set socket */
sp->socket = s;
@@ -2731,7 +2705,7 @@ iperf_new_stream(struct iperf_test *test, int s)
sp->diskfile_fd = open(test->diskfile_name, test->sender ? O_RDONLY : (O_WRONLY|O_CREAT|O_TRUNC), S_IRUSR|S_IWUSR);
if (sp->diskfile_fd == -1) {
i_errno = IEFILE;
- munmap(sp->buffer, sp->test->settings->blksize);
+ free(sp->buffer);
free(sp->result);
free(sp);
return NULL;
@@ -2745,8 +2719,7 @@ iperf_new_stream(struct iperf_test *test, int s)
/* Initialize stream */
if (iperf_init_stream(sp, test) < 0) {
- close(sp->buffer_fd);
- munmap(sp->buffer, sp->test->settings->blksize);
+ free(sp->buffer);
free(sp->result);
free(sp);
return NULL;
@@ -2774,25 +2747,6 @@ iperf_init_stream(struct iperf_stream *sp, struct iperf_test *test)
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;
}
diff --git a/src/iperf_api.h b/src/iperf_api.h
index 0f153fe..f2ff9bc 100755
--- a/src/iperf_api.h
+++ b/src/iperf_api.h
@@ -29,6 +29,7 @@
#include <sys/time.h>
#include <setjmp.h>
+#include <sys/select.h>
struct iperf_test;
struct iperf_stream_result;
diff --git a/src/iperf_client_api.c b/src/iperf_client_api.c
index f19f6f1..ff0a4c8 100644
--- a/src/iperf_client_api.c
+++ b/src/iperf_client_api.c
@@ -33,7 +33,6 @@
#include <signal.h>
#include <sys/types.h>
#include <sys/select.h>
-#include <sys/uio.h>
#include <arpa/inet.h>
#include "iperf.h"
diff --git a/src/iperf_config.h b/src/iperf_config.h
new file mode 100644
index 0000000..979b858
--- /dev/null
+++ b/src/iperf_config.h
@@ -0,0 +1,98 @@
+/* src/iperf_config.h. Generated from iperf_config.h.in by configure. */
+/* src/iperf_config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the `cpuset_setaffinity' function. */
+/* #undef HAVE_CPUSET_SETAFFINITY */
+
+/* Have CPU affinity support. */
+// #define HAVE_CPU_AFFINITY 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+// #define HAVE_DLFCN_H 1
+
+/* Have IPv6 flowlabel support. */
+// #define HAVE_FLOWLABEL 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+// #define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+// #define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the <netinet/sctp.h> header file. */
+/* #undef HAVE_NETINET_SCTP_H */
+
+/* Define to 1 if you have the `sched_setaffinity' function. */
+// #define HAVE_SCHED_SETAFFINITY 1
+
+/* Have SCTP support. */
+/* #undef HAVE_SCTP */
+
+/* Define to 1 if you have the `sendfile' function. */
+// #define HAVE_SENDFILE 1
+
+/* Have SO_MAX_PACING_RATE sockopt. */
+// #define HAVE_SO_MAX_PACING_RATE 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+// #define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if the system has the type `struct sctp_assoc_value'. */
+/* #undef HAVE_STRUCT_SCTP_ASSOC_VALUE */
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#define HAVE_SYS_SOCKET_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Have TCP_CONGESTION sockopt. */
+#define HAVE_TCP_CONGESTION 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+// /* Define to the sub-directory where libtool stores uninstalled libraries. */
+// #define LT_OBJDIR ".libs/"
+
+/* Name of package */
+#define PACKAGE "iperf"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "https://github.com/esnet/iperf"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "iperf"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "iperf 3.1.3"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "iperf"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL "http://software.es.net/iperf/"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "3.1.3"
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "3.1.3"
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
diff --git a/src/iperf_server_api.c b/src/iperf_server_api.c
index 227ec78..f0a4a30 100644
--- a/src/iperf_server_api.c
+++ b/src/iperf_server_api.c
@@ -30,7 +30,6 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <getopt.h>
#include <errno.h>
#include <unistd.h>
#include <assert.h>
@@ -47,7 +46,6 @@
#include <netinet/tcp.h>
#include <sys/time.h>
#include <sys/resource.h>
-#include <sched.h>
#include <setjmp.h>
#include "iperf.h"
diff --git a/src/iperf_util.c b/src/iperf_util.c
index 73dc362..4bfe6f9 100644
--- a/src/iperf_util.c
+++ b/src/iperf_util.c
@@ -40,7 +40,6 @@
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
-#include <sys/utsname.h>
#include <time.h>
#include <errno.h>
@@ -59,17 +58,17 @@ void
make_cookie(char *cookie)
{
static int randomized = 0;
- char hostname[500];
+ char hostname[500] = "ruxos-iperf";
struct timeval tv;
char temp[1000];
if ( ! randomized )
- srandom((int) time(0) ^ getpid());
+ srand((int) time(0) ^ getpid());
/* Generate a string based on hostname, time, randomness, and filler. */
- (void) gethostname(hostname, sizeof(hostname));
+ // (void) gethostname(hostname, sizeof(hostname));
(void) gettimeofday(&tv, 0);
- (void) snprintf(temp, sizeof(temp), "%s.%ld.%06ld.%08lx%08lx.%s", hostname, (unsigned long int) tv.tv_sec, (unsigned long int) tv.tv_usec, (unsigned long int) random(), (unsigned long int) random(), "1234567890123456789012345678901234567890");
+ (void) snprintf(temp, sizeof(temp), "%s.%ld.%06ld.%08lx%08lx.%s", hostname, (unsigned long int) tv.tv_sec, (unsigned long int) tv.tv_usec, (unsigned long int) rand(), (unsigned long int) rand(), "1234567890123456789012345678901234567890");
/* Now truncate it to 36 bytes and terminate. */
memcpy(cookie, temp, 36);
@@ -178,50 +177,25 @@ delay(int us)
void
cpu_util(double pcpu[3])
{
- static struct timeval last;
- static clock_t clast;
- static struct rusage rlast;
- struct timeval temp;
- clock_t ctemp;
- struct rusage rtemp;
- double timediff;
- double userdiff;
- double systemdiff;
-
if (pcpu == NULL) {
- gettimeofday(&last, NULL);
- clast = clock();
- getrusage(RUSAGE_SELF, &rlast);
return;
}
- gettimeofday(&temp, NULL);
- ctemp = clock();
- getrusage(RUSAGE_SELF, &rtemp);
-
- timediff = ((temp.tv_sec * 1000000.0 + temp.tv_usec) -
- (last.tv_sec * 1000000.0 + last.tv_usec));
- userdiff = ((rtemp.ru_utime.tv_sec * 1000000.0 + rtemp.ru_utime.tv_usec) -
- (rlast.ru_utime.tv_sec * 1000000.0 + rlast.ru_utime.tv_usec));
- systemdiff = ((rtemp.ru_stime.tv_sec * 1000000.0 + rtemp.ru_stime.tv_usec) -
- (rlast.ru_stime.tv_sec * 1000000.0 + rlast.ru_stime.tv_usec));
-
- pcpu[0] = (((ctemp - clast) * 1000000.0 / CLOCKS_PER_SEC) / timediff) * 100;
- pcpu[1] = (userdiff / timediff) * 100;
- pcpu[2] = (systemdiff / timediff) * 100;
+ pcpu[0] =0;
+ pcpu[1] =0;
+ pcpu[2] =0;
}
const char *
get_system_info(void)
{
static char buf[1024];
- struct utsname uts;
+ // struct utsname uts;
memset(buf, 0, 1024);
- uname(&uts);
+ // uname(&uts);
- snprintf(buf, sizeof(buf), "%s %s %s %s %s", uts.sysname, uts.nodename,
- uts.release, uts.version, uts.machine);
+ snprintf(buf, sizeof(buf), "%s %s %s %s %s", "ruxos", "iperf", "0", "0","null");
return buf;
}
diff --git a/src/main_server.c b/src/main_server.c
new file mode 100644
index 0000000..c9964ba
--- /dev/null
+++ b/src/main_server.c
@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <stdint.h>
+
+#include "iperf_api.h"
+
+int main() {
+ int port;
+ struct iperf_test *test;
+ int consecutive_errors;
+
+ port = 5555;
+
+ test = iperf_new_test();
+ if (test == NULL) {
+ printf("failed to create test\n");
+ exit(-1);
+ }
+ iperf_defaults(test);
+ iperf_set_test_role(test, 's');
+ iperf_set_test_server_port(test, port);
+ iperf_set_test_bind_address(test, "0.0.0.0");
+ consecutive_errors = 0;
+ for (;;) {
+ if (iperf_run_server(test) < 0) {
+ printf("error - %s\n\n", iperf_strerror(i_errno));
+ ++consecutive_errors;
+ if (consecutive_errors >= 5) {
+ printf("too many errors, exiting\n");
+ break;
+ }
+ } else
+ consecutive_errors = 0;
+ iperf_reset_test(test);
+ }
+
+ iperf_free_test(test);
+ return 0;
+}
diff --git a/src/net.c b/src/net.c
index aa4a15c..80271e2 100644
--- a/src/net.c
+++ b/src/net.c
@@ -31,13 +31,13 @@
#include <errno.h>
#include <sys/socket.h>
#include <sys/types.h>
-#include <sys/errno.h>
+#include <errno.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <assert.h>
#include <netdb.h>
#include <string.h>
-#include <sys/fcntl.h>
+#include <fcntl.h>
#ifdef HAVE_SENDFILE
#ifdef linux
diff --git a/src/tcp_info.c b/src/tcp_info.c
index 76b117a..950ab41 100644
--- a/src/tcp_info.c
+++ b/src/tcp_info.c
@@ -45,7 +45,7 @@
#include <stdio.h>
#include <stdlib.h>
-#include <sys/param.h>
+// #include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/tcp.h>
diff --git a/src/units.c b/src/units.c
index ed1ea60..3d590db 100644
--- a/src/units.c
+++ b/src/units.c
@@ -78,116 +78,6 @@ extern "C"
const long MEGA_RATE_UNIT = 1000 * 1000;
const long GIGA_RATE_UNIT = 1000 * 1000 * 1000;
-/* -------------------------------------------------------------------
- * unit_atof
- *
- * Given a string of form #x where # is a number and x is a format
- * character listed below, this returns the interpreted integer.
- * Gg, Mm, Kk are giga, mega, kilo respectively
- * ------------------------------------------------------------------- */
-
- double unit_atof(const char *s)
- {
- double n;
- char suffix = '\0';
-
- assert(s != NULL);
-
- /* scan the number and any suffices */
- sscanf(s, "%lf%c", &n, &suffix);
-
- /* convert according to [Gg Mm Kk] */
- switch (suffix)
- {
- case 'g': case 'G':
- n *= GIGA_UNIT;
- break;
- case 'm': case 'M':
- n *= MEGA_UNIT;
- break;
- case 'k': case 'K':
- n *= KILO_UNIT;
- break;
- default:
- break;
- }
- return n;
- } /* end unit_atof */
-
-
-/* -------------------------------------------------------------------
- * unit_atof_rate
- *
- * Similar to unit_atof, but uses 10-based rather than 2-based
- * suffixes.
- * ------------------------------------------------------------------- */
-
- double unit_atof_rate(const char *s)
- {
- double n;
- char suffix = '\0';
-
- assert(s != NULL);
-
- /* scan the number and any suffices */
- sscanf(s, "%lf%c", &n, &suffix);
-
- /* convert according to [Gg Mm Kk] */
- switch (suffix)
- {
- case 'g': case 'G':
- n *= GIGA_RATE_UNIT;
- break;
- case 'm': case 'M':
- n *= MEGA_RATE_UNIT;
- break;
- case 'k': case 'K':
- n *= KILO_RATE_UNIT;
- break;
- default:
- break;
- }
- return n;
- } /* end unit_atof_rate */
-
-
-
-/* -------------------------------------------------------------------
- * unit_atoi
- *
- * Given a string of form #x where # is a number and x is a format
- * character listed below, this returns the interpreted integer.
- * Gg, Mm, Kk are giga, mega, kilo respectively
- * ------------------------------------------------------------------- */
-
- iperf_size_t unit_atoi(const char *s)
- {
- double n;
- char suffix = '\0';
-
- assert(s != NULL);
-
- /* scan the number and any suffices */
- sscanf(s, "%lf%c", &n, &suffix);
-
- /* convert according to [Gg Mm Kk] */
- switch (suffix)
- {
- case 'g': case 'G':
- n *= GIGA_UNIT;
- break;
- case 'm': case 'M':
- n *= MEGA_UNIT;
- break;
- case 'k': case 'K':
- n *= KILO_UNIT;
- break;
- default:
- break;
- }
- return (iperf_size_t) n;
- } /* end unit_atof */
-
/* -------------------------------------------------------------------
* constants for byte_printf
* ------------------------------------------------------------------- */
diff --git a/src/units.h b/src/units.h
index 6ab9216..437c89d 100644
--- a/src/units.h
+++ b/src/units.h
@@ -28,7 +28,4 @@ enum {
UNIT_LEN = 32
};
-double unit_atof( const char *s );
-double unit_atof_rate( const char *s );
-iperf_size_t unit_atoi( const char *s );
void unit_snprintf( char *s, int inLen, double inNum, char inFormat );
diff --git a/src/version.h b/src/version.h
new file mode 100644
index 0000000..db8f001
--- /dev/null
+++ b/src/version.h
@@ -0,0 +1,27 @@
+/*
+ * iperf, Copyright (c) 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.
+ *
+ * If you have questions about your rights to use or distribute this
+ * software, please contact Berkeley Lab's Technology Transfer
+ * Department at TTD@lbl.gov.
+ *
+ * NOTICE. This software is owned by the U.S. Department of Energy.
+ * As such, the U.S. Government has been granted for itself and others
+ * acting on its behalf a paid-up, nonexclusive, irrevocable,
+ * worldwide license in the Software to reproduce, prepare derivative
+ * works, and perform publicly and display publicly. Beginning five
+ * (5) years after the date permission to assert copyright is obtained
+ * from the U.S. Department of Energy, and subject to any subsequent
+ * five (5) year renewals, the U.S. Government is granted for itself
+ * and others acting on its behalf a paid-up, nonexclusive,
+ * irrevocable, worldwide license in the Software to reproduce,
+ * prepare derivative works, distribute copies to the public, perform
+ * publicly and display publicly, and to permit others to do so.
+ *
+ * This code is distributed under a BSD style license, see the LICENSE
+ * file for complete information.
+ */
+#define IPERF_VERSION "3.1.3"