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add MPTCPv1 support #1659

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3 changes: 3 additions & 0 deletions src/iperf.h
Original file line number Diff line number Diff line change
Expand Up @@ -339,6 +339,9 @@ struct iperf_test
int udp_counters_64bit; /* --use-64-bit-udp-counters */
int forceflush; /* --forceflush - flushing output at every interval */
int multisend;
#if defined(linux)
int multipath;
#endif
int repeating_payload; /* --repeating-payload */
int timestamps; /* --timestamps */
char *timestamp_format;
Expand Down
4 changes: 4 additions & 0 deletions src/iperf3.1
Original file line number Diff line number Diff line change
Expand Up @@ -193,6 +193,10 @@ parameter is specified in ms, and defaults to the system settings.
This functionality depends on the TCP_USER_TIMEOUT socket option, and
will not work on systems that do not support it.
.TP
.BR -m ", " --multipath " "
use multipath variant for the current protocol. This only applies to
TCP and enables MPTCP usage.
.TP
.BR -d ", " --debug " "
emit debugging output.
Primarily (perhaps exclusively) of use to developers.
Expand Down
15 changes: 14 additions & 1 deletion src/iperf_api.c
Original file line number Diff line number Diff line change
Expand Up @@ -1144,6 +1144,9 @@ iperf_parse_arguments(struct iperf_test *test, int argc, char **argv)
{"idle-timeout", required_argument, NULL, OPT_IDLE_TIMEOUT},
{"rcv-timeout", required_argument, NULL, OPT_RCV_TIMEOUT},
{"snd-timeout", required_argument, NULL, OPT_SND_TIMEOUT},
#if defined(linux)
{"multipath", no_argument, NULL, 'm'},
#endif
{"debug", optional_argument, NULL, 'd'},
{"help", no_argument, NULL, 'h'},
{NULL, 0, NULL, 0}
Expand All @@ -1169,7 +1172,7 @@ iperf_parse_arguments(struct iperf_test *test, int argc, char **argv)
FILE *ptr_file;
#endif /* HAVE_SSL */

while ((flag = getopt_long(argc, argv, "p:f:i:D1VJvsc:ub:t:n:k:l:P:Rw:B:M:N46S:L:ZO:F:A:T:C:dI:hX:", longopts, NULL)) != -1) {
while ((flag = getopt_long(argc, argv, "p:f:i:D1VJvsc:ub:t:n:k:l:P:Rw:B:mM:N46S:L:ZO:F:A:T:C:dI:hX:", longopts, NULL)) != -1) {
switch (flag) {
case 'p':
portno = atoi(optarg);
Expand Down Expand Up @@ -1639,6 +1642,12 @@ iperf_parse_arguments(struct iperf_test *test, int argc, char **argv)
test->settings->connect_timeout = unit_atoi(optarg);
client_flag = 1;
break;
#if defined(linux)
case 'm':
set_protocol(test, Ptcp);
test->multipath = 1;
break;
#endif
case 'h':
usage_long(stdout);
exit(0);
Expand Down Expand Up @@ -2216,6 +2225,8 @@ send_parameters(struct iperf_test *test)
cJSON_AddTrueToObject(j, "reverse");
if (test->bidirectional)
cJSON_AddTrueToObject(j, "bidirectional");
if (test->multipath)
cJSON_AddTrueToObject(j, "multipath");
if (test->settings->socket_bufsize)
cJSON_AddNumberToObject(j, "window", test->settings->socket_bufsize);
if (test->settings->blksize)
Expand Down Expand Up @@ -2332,6 +2343,8 @@ get_parameters(struct iperf_test *test)
iperf_set_test_reverse(test, 1);
if ((j_p = cJSON_GetObjectItem(j, "bidirectional")) != NULL)
iperf_set_test_bidirectional(test, 1);
if ((j_p = cJSON_GetObjectItem(j, "multipath")) != NULL)
test->multipath = 1;
if ((j_p = cJSON_GetObjectItem(j, "window")) != NULL)
test->settings->socket_bufsize = j_p->valueint;
if ((j_p = cJSON_GetObjectItem(j, "len")) != NULL)
Expand Down
3 changes: 3 additions & 0 deletions src/iperf_locale.c
Original file line number Diff line number Diff line change
Expand Up @@ -128,6 +128,9 @@ const char usage_longstr[] = "Usage: iperf3 [-s|-c host] [options]\n"
" --snd-timeout # timeout for unacknowledged TCP data\n"
" (in ms, default is system settings)\n"
#endif /* HAVE_TCP_USER_TIMEOUT */
#if defined(linux)
" -m, --multipath use MPTCP rather than plain TCP\n"
#endif
" -d, --debug[=#] emit debugging output\n"
" (optional optional \"=\" and debug level: 1-4. Default is 4 - all messages)\n"
" -v, --version show version information and quit\n"
Expand Down
18 changes: 15 additions & 3 deletions src/iperf_tcp.c
Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,10 @@
#include "net.h"
#include "cjson.h"

#ifndef IPPROTO_MPTCP
#define IPPROTO_MPTCP 262
#endif

#if defined(HAVE_FLOWLABEL)
#include "flowlabel.h"
#endif /* HAVE_FLOWLABEL */
Expand Down Expand Up @@ -182,9 +186,10 @@ iperf_tcp_listen(struct iperf_test *test)
*
* It's not clear whether this is a requirement or a convenience.
*/
if (test->no_delay || test->settings->mss || test->settings->socket_bufsize) {
if (test->no_delay || test->multipath || test->settings->mss || test->settings->socket_bufsize) {
struct addrinfo hints, *res;
char portstr[6];
int proto = 0;

FD_CLR(s, &test->read_set);
close(s);
Expand All @@ -210,7 +215,10 @@ iperf_tcp_listen(struct iperf_test *test)
return -1;
}

if ((s = socket(res->ai_family, SOCK_STREAM, 0)) < 0) {
if (test->multipath)
proto = IPPROTO_MPTCP;

if ((s = socket(res->ai_family, SOCK_STREAM, proto)) < 0) {
freeaddrinfo(res);
i_errno = IESTREAMLISTEN;
return -1;
Expand Down Expand Up @@ -375,8 +383,12 @@ iperf_tcp_connect(struct iperf_test *test)
socklen_t optlen;
int saved_errno;
int rcvbuf_actual, sndbuf_actual;
int proto = 0;

if (test->multipath)
proto = IPPROTO_MPTCP;

s = create_socket(test->settings->domain, SOCK_STREAM, test->bind_address, test->bind_dev, test->bind_port, test->server_hostname, test->server_port, &server_res);
s = create_socket(test->settings->domain, SOCK_STREAM, proto, test->bind_address, test->bind_dev, test->bind_port, test->server_hostname, test->server_port, &server_res);
if (s < 0) {
i_errno = IESTREAMCONNECT;
return -1;
Expand Down
10 changes: 5 additions & 5 deletions src/net.c
Original file line number Diff line number Diff line change
Expand Up @@ -124,7 +124,7 @@ timeout_connect(int s, const struct sockaddr *name, socklen_t namelen,

/* create a socket */
int
create_socket(int domain, int proto, const char *local, const char *bind_dev, int local_port, const char *server, int port, struct addrinfo **server_res_out)
create_socket(int domain, int type, int proto, const char *local, const char *bind_dev, int local_port, const char *server, int port, struct addrinfo **server_res_out)
{
struct addrinfo hints, *local_res = NULL, *server_res = NULL;
int s, saved_errno;
Expand All @@ -133,22 +133,22 @@ create_socket(int domain, int proto, const char *local, const char *bind_dev, in
if (local) {
memset(&hints, 0, sizeof(hints));
hints.ai_family = domain;
hints.ai_socktype = proto;
hints.ai_socktype = type;
if ((gerror = getaddrinfo(local, NULL, &hints, &local_res)) != 0)
return -1;
}

memset(&hints, 0, sizeof(hints));
hints.ai_family = domain;
hints.ai_socktype = proto;
hints.ai_socktype = type;
snprintf(portstr, sizeof(portstr), "%d", port);
if ((gerror = getaddrinfo(server, portstr, &hints, &server_res)) != 0) {
if (local)
freeaddrinfo(local_res);
return -1;
}

s = socket(server_res->ai_family, proto, 0);
s = socket(server_res->ai_family, type, proto);
if (s < 0) {
if (local)
freeaddrinfo(local_res);
Expand Down Expand Up @@ -238,7 +238,7 @@ netdial(int domain, int proto, const char *local, const char *bind_dev, int loca
struct addrinfo *server_res = NULL;
int s, saved_errno;

s = create_socket(domain, proto, local, bind_dev, local_port, server, port, &server_res);
s = create_socket(domain, proto, 0, local, bind_dev, local_port, server, port, &server_res);
if (s < 0) {
return -1;
}
Expand Down
2 changes: 1 addition & 1 deletion src/net.h
Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@
#define __NET_H

int timeout_connect(int s, const struct sockaddr *name, socklen_t namelen, int timeout);
int create_socket(int domain, int proto, const char *local, const char *bind_dev, int local_port, const char *server, int port, struct addrinfo **server_res_out);
int create_socket(int domain, int type, int proto, const char *local, const char *bind_dev, int local_port, const char *server, int port, struct addrinfo **server_res_out);
int netdial(int domain, int proto, const char *local, const char *bind_dev, int local_port, const char *server, int port, int timeout);
int netannounce(int domain, int proto, const char *local, const char *bind_dev, int port);
int Nread(int fd, char *buf, size_t count, int prot);
Expand Down