/* SCTP kernel Implementation
* (C) Copyright IBM Corp. 2001, 2003
* Copyright (c) 1999-2000 Cisco, Inc.
* Copyright (c) 1999-2001 Motorola, Inc.
* Copyright (c) 2001 Intel Corp.
* Copyright (c) 2001 Nokia, Inc.
*
* The SCTP implementation is free software;
* you can redistribute it and/or modify it under the terms of
* the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* The SCTP implementation is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* ************************
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU CC; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Please send any bug reports or fixes you make to the
* email address(es):
* lksctp developers <lksctp-developers@lists.sourceforge.net>
*
* Or submit a bug report through the following website:
* http://www.sf.net/projects/lksctp
*
* Any bugs reported to us we will try to fix... any fixes shared will
* be incorporated into the next SCTP release.
*
* Written or modified by:
* La Monte H.P. Yarroll <piggy@acm.org>
* Karl Knutson <karl@athena.chicago.il.us>
* Hui Huang <hui.huang@nokia.com>
* Jon Grimm <jgrimm@us.ibm.com>
* Sridhar Samudrala <sri@us.ibm.com>
*/
/* This is a functional test to verify the data fragmentation, reassembly
* support and SCTP_DISABLE_FRAGMENTS socket option.
* The following tests are done in sequence.
* - Verify SCTP_DISABLE_FRAGMENTS socket option by doing a setsockopt()
* followed by a getsockopt().
* - Verify that a message size exceeding the association fragmentation
* point cannot be sent when fragmentation is disabled.
* - Send and receive a set of messages that are bigger than the path mtu.
* The different message sizes to be tested are specified in the array
* msg_sizes[].
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include <netinet/in.h>
#include <sys/errno.h>
#include <errno.h>
#include <netinet/sctp.h>
#include <sctputil.h>
char *TCID = __FILE__;
int TST_TOTAL = 4;
int TST_CNT = 0;
int msg_sizes[] = {1353, 2000, 5000, 10000, 20000, 32768};
int
main(int argc, char *argv[])
{
int sk1, sk2;
sockaddr_storage_t loop1;
sockaddr_storage_t loop2;
struct iovec iov;
struct msghdr inmessage;
struct msghdr outmessage;
char incmsg[CMSG_SPACE(sizeof(sctp_cmsg_data_t))];
char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
struct cmsghdr *cmsg;
struct sctp_sndrcvinfo *sinfo;
struct iovec out_iov;
int error, bytes_sent;
int pf_class;
uint32_t ppid;
uint32_t stream;
char *big_buffer;
int msg_len, msg_cnt, i;
void *msg_buf;
int disable_frag;
socklen_t optlen;
/* Rather than fflush() throughout the code, set stdout to
* be unbuffered.
*/
setvbuf(stdout, NULL, _IONBF, 0);
/* Set some basic values which depend on the address family. */
#if TEST_V6
pf_class = PF_INET6;
loop1.v6.sin6_family = AF_INET6;
loop1.v6.sin6_addr = in6addr_loopback;
loop1.v6.sin6_port = htons(SCTP_TESTPORT_1);
loop2.v6.sin6_family = AF_INET6;
loop2.v6.sin6_addr = in6addr_loopback;
loop2.v6.sin6_port = htons(SCTP_TESTPORT_2);
#else
pf_class = PF_INET;
loop1.v4.sin_family = AF_INET;
loop1.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
loop1.v4.sin_port = htons(SCTP_TESTPORT_1);
loop2.v4.sin_family = AF_INET;
loop2.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
loop2.v4.sin_port = htons(SCTP_TESTPORT_2);
#endif /* TEST_V6 */
/* Create the two endpoints which will talk to each other. */
sk1 = test_socket(pf_class, SOCK_SEQPACKET, IPPROTO_SCTP);
sk2 = test_socket(pf_class, SOCK_SEQPACKET, IPPROTO_SCTP);
/* Enable ASSOC_CHANGE and SNDRCVINFO notifications. */
test_enable_assoc_change(sk1);
test_enable_assoc_change(sk2);
/* Bind these sockets to the test ports. */
test_bind(sk1, &loop1.sa, sizeof(loop1));
test_bind(sk2, &loop2.sa, sizeof(loop2));
/* Mark sk2 as being able to accept new associations. */
test_listen(sk2, 1);
/* Send the first message. This will create the association. */
outmessage.msg_name = &loop2;
outmessage.msg_namelen = sizeof(loop2);
outmessage.msg_iov = &out_iov;
outmessage.msg_iovlen = 1;
outmessage.msg_control = outcmsg;
outmessage.msg_controllen = sizeof(outcmsg);
outmessage.msg_flags = 0;
cmsg = CMSG_FIRSTHDR(&outmessage);
cmsg->cmsg_level = IPPROTO_SCTP;
cmsg->cmsg_type = SCTP_SNDRCV;
cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
outmessage.msg_controllen = cmsg->cmsg_len;
sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo));
ppid = rand(); /* Choose an arbitrary value. */
stream = 1;
sinfo->sinfo_ppid = ppid;
sinfo->sinfo_stream = stream;
msg_len = 10;
msg_buf = test_build_msg(10);
outmessage.msg_iov->iov_base = msg_buf;
outmessage.msg_iov->iov_len = msg_len;
test_sendmsg(sk1, &outmessage, 0, msg_len);
/* Initialize inmessage for all receives. */
big_buffer = test_malloc(REALLY_BIG);
memset(&inmessage, 0, sizeof(inmessage));
iov.iov_base = big_buffer;
iov.iov_len = REALLY_BIG;
inmessage.msg_iov = &iov;
inmessage.msg_iovlen = 1;
inmessage.msg_control = incmsg;
/* Get the communication up message on sk2. */
inmessage.msg_controllen = sizeof(incmsg);
error = test_recvmsg(sk2, &inmessage, MSG_WAITALL);
test_check_msg_notification(&inmessage, error,
sizeof(struct sctp_assoc_change),
SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
#if 0
sac = (struct sctp_assoc_change *)iov.iov_base;
associd2 = sac->sac_assoc_id;
#endif
/* Get the communication up message on sk1. */
inmessage.msg_controllen = sizeof(incmsg);
error = test_recvmsg(sk1, &inmessage, MSG_WAITALL);
test_check_msg_notification(&inmessage, error,
sizeof(struct sctp_assoc_change),
SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
#if 0
sac = (struct sctp_assoc_change *)iov.iov_base;
associd1 = sac->sac_assoc_id;
#endif
/* Get the first message which was sent. */
inmessage.msg_controllen = sizeof(incmsg);
error = test_recvmsg(sk2, &inmessage, MSG_WAITALL);
test_check_msg_data(&inmessage, error, msg_len, MSG_EOR, stream, ppid);
free(msg_buf);
/* Disable fragmentation. */
disable_frag = 1;
test_setsockopt(sk1, SCTP_DISABLE_FRAGMENTS, &disable_frag,
sizeof(disable_frag));
tst_resm(TPASS, "setsockopt(SCTP_DISABLE_FRAGMENTS)");
/* Do a getsockopt() and verify that fragmentation is disabled. */
disable_frag = 0;
optlen = sizeof(disable_frag);
error = test_getsockopt(sk1, SCTP_DISABLE_FRAGMENTS, &disable_frag,
&optlen);
if ((error != 0) && (disable_frag != 1))
tst_brkm(TBROK, tst_exit, "getsockopt(SCTP_DISABLE_FRAGMENTS) "
"error:%d errno:%d disable_frag:%d",
error, errno, disable_frag);
tst_resm(TPASS, "getsockopt(SCTP_DISABLE_FRAGMENTS)");
/* Try to send a messsage that exceeds association fragmentation point
* and verify that it fails.
*/
msg_len = 100000;
msg_buf = test_build_msg(msg_len);
outmessage.msg_iov->iov_base = msg_buf;
outmessage.msg_iov->iov_len = msg_len;
error = sendmsg(sk1, &outmessage, 0);
if ((error != -1) || (errno != EMSGSIZE))
tst_brkm(TBROK, tst_exit, "Send a message that exceeds "
"assoc frag point error:%d errno:%d", error, errno);
tst_resm(TPASS, "Send a message that exceeds assoc frag point");
/* Enable Fragmentation. */
disable_frag = 0;
test_setsockopt(sk1, SCTP_DISABLE_FRAGMENTS, &disable_frag,
sizeof(disable_frag));
msg_cnt = sizeof(msg_sizes) / sizeof(int);
/* Send and receive the messages of different sizes specified in the
* msg_sizes array in a loop.
*/
for (i = 0; i < msg_cnt; i++) {
msg_len = msg_sizes[i];
msg_buf = test_build_msg(msg_len);
outmessage.msg_iov->iov_base = msg_buf;
outmessage.msg_iov->iov_len = msg_len;
bytes_sent = test_sendmsg(sk1, &outmessage, 0, msg_len);
tst_resm(TINFO, "Sent %d byte message", bytes_sent);
inmessage.msg_controllen = sizeof(incmsg);
error = test_recvmsg(sk2, &inmessage, MSG_WAITALL);
/* Handle Partial Reads. */
if (inmessage.msg_flags & MSG_EOR) {
test_check_msg_data(&inmessage, error, bytes_sent,
MSG_EOR, stream, ppid);
tst_resm(TINFO, "Received %d byte message", error);
} else {
int remain;
test_check_msg_data(&inmessage, error, error, 0,
stream, ppid);
tst_resm(TINFO, "Received %d byte message", error);
/* Read the remaining message. */
inmessage.msg_controllen = sizeof(incmsg);
remain = test_recvmsg(sk2, &inmessage, MSG_WAITALL);
test_check_msg_data(&inmessage, remain,
bytes_sent - error,
MSG_EOR, stream, ppid);
tst_resm(TINFO, "Received %d byte message", error);
}
free(msg_buf);
}
tst_resm(TPASS, "Send/Receive fragmented messages");
/* Shut down the link. */
close(sk1);
/* Get the shutdown complete notification. */
inmessage.msg_controllen = sizeof(incmsg);
error = test_recvmsg(sk2, &inmessage, MSG_WAITALL);
test_check_msg_notification(&inmessage, error,
sizeof(struct sctp_assoc_change),
SCTP_ASSOC_CHANGE, SCTP_SHUTDOWN_COMP);
close(sk2);
/* Indicate successful completion. */
return 0;
}