test_sockopt.c

SCTP 协议实现源代码

/* SCTP kernel Implementation
 * (C) Copyright IBM Corp. 2001, 2004
 * 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 <[e-mail]>
 *
 * 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 <[e-mail]>
 *    Karl Knutson <[e-mail]>
 *    Hui Huang <[e-mail]>
 *    Jon Grimm <[e-mail]>
 *    Sridhar Samudrala <[e-mail]>
 */

/* This is a functional test to verify the various SCTP level socket
 * options that can be used to get information about existing SCTP
 * associations and to configure certain parameters.
 */

#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 <sys/errno.h>
#include <netinet/in.h>
#include <netinet/sctp.h>
#include <sctputil.h>

char *TCID = __FILE__;
int TST_TOTAL = 29;
int TST_CNT = 0;

int
main(void)
{
	int udp_svr_sk, udp_clt_sk, tcp_svr_sk, tcp_clt_sk;
	int accept_sk, peeloff_sk;
        sockaddr_storage_t udp_svr_loop, udp_clt_loop;
        sockaddr_storage_t tcp_svr_loop, tcp_clt_loop;
        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;
        char *message = "hello, world!\n";
        int error;
	int pf_class, af_family;
	uint32_t ppid;
	uint32_t stream;
	sctp_assoc_t udp_svr_associd, udp_clt_associd;
	struct sctp_assoc_change *sac;
	char *big_buffer;
	struct sctp_event_subscribe subscribe;
	struct sctp_initmsg initmsg;
	struct sctp_paddrparams paddrparams;
	struct sctp_sndrcvinfo set_udp_sk_dflt_param, get_udp_sk_dflt_param; 
	struct sctp_sndrcvinfo set_tcp_sk_dflt_param, get_tcp_sk_dflt_param; 
	struct sctp_sndrcvinfo set_udp_assoc_dflt_param;
	struct sctp_sndrcvinfo get_udp_assoc_dflt_param; 
	struct sctp_sndrcvinfo set_tcp_assoc_dflt_param;
	struct sctp_sndrcvinfo get_tcp_assoc_dflt_param; 
	struct sctp_sndrcvinfo get_peeloff_assoc_dflt_param; 
	struct sctp_sndrcvinfo get_accept_assoc_dflt_param; 
	struct sctp_paddrinfo pinfo;
	int dflt_pathmaxrxt;
	socklen_t optlen, addrlen;
	struct sctp_status status;
	struct sctp_assoc_value value;

        /* 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;
	af_family = AF_INET6;

        udp_svr_loop.v6.sin6_family = AF_INET6;
        udp_svr_loop.v6.sin6_addr = in6addr_loopback;
        udp_svr_loop.v6.sin6_port = htons(SCTP_TESTPORT_1);

        udp_clt_loop.v6.sin6_family = AF_INET6;
        udp_clt_loop.v6.sin6_addr = in6addr_loopback;
        udp_clt_loop.v6.sin6_port = htons(SCTP_TESTPORT_1+1);

        tcp_svr_loop.v6.sin6_family = AF_INET6;
        tcp_svr_loop.v6.sin6_addr = in6addr_loopback;
        tcp_svr_loop.v6.sin6_port = htons(SCTP_TESTPORT_1+2);

        tcp_clt_loop.v6.sin6_family = AF_INET6;
        tcp_clt_loop.v6.sin6_addr = in6addr_loopback;
        tcp_clt_loop.v6.sin6_port = htons(SCTP_TESTPORT_1+3);
#else
	pf_class = PF_INET;
	af_family = AF_INET;

        udp_svr_loop.v4.sin_family = AF_INET;
        udp_svr_loop.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
        udp_svr_loop.v4.sin_port = htons(SCTP_TESTPORT_1);

        udp_clt_loop.v4.sin_family = AF_INET;
        udp_clt_loop.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
        udp_clt_loop.v4.sin_port = htons(SCTP_TESTPORT_1+1);

        tcp_svr_loop.v4.sin_family = AF_INET;
        tcp_svr_loop.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
        tcp_svr_loop.v4.sin_port = htons(SCTP_TESTPORT_1+2);

        tcp_clt_loop.v4.sin_family = AF_INET;
        tcp_clt_loop.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
        tcp_clt_loop.v4.sin_port = htons(SCTP_TESTPORT_2+3);
#endif /* TEST_V6 */

        /* Create the two endpoints which will talk to each other.  */
        udp_svr_sk = test_socket(pf_class, SOCK_SEQPACKET, IPPROTO_SCTP);
        udp_clt_sk = test_socket(pf_class, SOCK_SEQPACKET, IPPROTO_SCTP);

	/* Enable ASSOC_CHANGE and SNDRCVINFO notifications. */
	test_enable_assoc_change(udp_svr_sk);
	test_enable_assoc_change(udp_clt_sk);

        /* Bind these sockets to the test ports.  */
        test_bind(udp_svr_sk, &udp_svr_loop.sa, sizeof(udp_svr_loop));
        test_bind(udp_clt_sk, &udp_clt_loop.sa, sizeof(udp_clt_loop));

       /* Mark udp_svr_sk as being able to accept new associations.  */
	test_listen(udp_svr_sk, 1);

	/* TEST #1: SCTP_STATUS socket option. */
	/* Make sure that SCTP_STATUS getsockopt on a socket with no
	 * association fails.
	 */
	optlen = sizeof(struct sctp_status);
	memset(&status, 0, optlen);
	error = getsockopt(udp_svr_sk, SOL_SCTP, SCTP_STATUS, &status,
			   &optlen);
	if ((error != -1) && (errno != EINVAL))
		tst_brkm(TBROK, tst_exit, "getsockopt(SCTP_STATUS) on a "
			 "socket with no assoc error:%d errno:%d",
			 error, errno);

	tst_resm(TPASS, "getsockopt(SCTP_STATUS) on a socket with no assoc");

        /* Send the first message.  This will create the association.  */
        outmessage.msg_name = &udp_svr_loop;
        outmessage.msg_namelen = sizeof(udp_svr_loop);
        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;
        outmessage.msg_iov->iov_base = message;
        outmessage.msg_iov->iov_len = strlen(message) + 1;
        test_sendmsg(udp_clt_sk, &outmessage, 0, strlen(message)+1);

	/* 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 udp_svr_sk.  */
        inmessage.msg_controllen = sizeof(incmsg);
        error = test_recvmsg(udp_svr_sk, &inmessage, MSG_WAITALL);
	test_check_msg_notification(&inmessage, error,
				    sizeof(struct sctp_assoc_change),
				    SCTP_ASSOC_CHANGE, SCTP_COMM_UP);	
	sac = (struct sctp_assoc_change *)iov.iov_base;
	udp_svr_associd = sac->sac_assoc_id;

        /* Get the communication up message on udp_clt_sk.  */
        inmessage.msg_controllen = sizeof(incmsg);
        error = test_recvmsg(udp_clt_sk, &inmessage, MSG_WAITALL);
	test_check_msg_notification(&inmessage, error,
				    sizeof(struct sctp_assoc_change),
				    SCTP_ASSOC_CHANGE, SCTP_COMM_UP);	
	sac = (struct sctp_assoc_change *)iov.iov_base;
	udp_clt_associd = sac->sac_assoc_id;

        /* Get the first message which was sent.  */
        inmessage.msg_controllen = sizeof(incmsg);
        error = test_recvmsg(udp_svr_sk, &inmessage, MSG_WAITALL);
        test_check_msg_data(&inmessage, error, strlen(message) + 1,
			    MSG_EOR, stream, ppid);

	/* Get SCTP_STATUS for udp_clt_sk's given association. */
	optlen = sizeof(struct sctp_status);
	memset(&status, 0, optlen);
	status.sstat_assoc_id = udp_clt_associd;
	test_getsockopt(udp_clt_sk, SCTP_STATUS, &status, &optlen);

	tst_resm(TPASS, "getsockopt(SCTP_STATUS)");

	/* Make sure that SCTP_STATUS getsockopt with invalid associd fails. */
	optlen = sizeof(struct sctp_status);
	memset(&status, 0, optlen);
	status.sstat_assoc_id = udp_svr_associd;
	error = getsockopt(udp_clt_sk, SOL_SCTP, SCTP_STATUS, &status,
			   &optlen); 
	if ((error != -1) && (errno != EINVAL))
        	tst_brkm(TBROK, tst_exit, "getsockopt(SCTP_STATUS) with "
			 "associd error: %d errno:%d", error, errno);

	tst_resm(TPASS, "getsockopt(SCTP_STATUS) with invalid associd");

	/* Make sure that SCTP_STATUS getsockopt with NULL associd fails. */
	optlen = sizeof(struct sctp_status);
	memset(&status, 0, optlen);
	status.sstat_assoc_id = 0;
	error = getsockopt(udp_svr_sk, SOL_SCTP, SCTP_STATUS, &status,
			   &optlen);
	if ((error != -1) && (errno != EINVAL))
        	tst_brkm(TBROK, tst_exit, "getsockopt(SCTP_STATUS) with "
			 "NULL associd error: %d errno:%d", error, errno);

	tst_resm(TPASS, "getsockopt(SCTP_STATUS) with NULL associd");

        /* Shut down the link.  */
        close(udp_clt_sk);

        /* Get the shutdown complete notification. */
	inmessage.msg_controllen = sizeof(incmsg);
        error = test_recvmsg(udp_svr_sk, &inmessage, MSG_WAITALL);
	test_check_msg_notification(&inmessage, error,
				    sizeof(struct sctp_assoc_change),
				    SCTP_ASSOC_CHANGE, SCTP_SHUTDOWN_COMP);	
				
	error = 0;
        close(udp_svr_sk);

	/* TEST #2: SCTP_EVENTS socket option and SCTP_SHUTDOWN_EVENT
	 * notification.
	 */
        /* Create the two endpoints which will talk to each other.  */
	udp_svr_sk = test_socket(pf_class, SOCK_SEQPACKET, IPPROTO_SCTP);
	udp_clt_sk = test_socket(pf_class, SOCK_SEQPACKET, IPPROTO_SCTP);

	/* Enable ASSOC_CHANGE and SNDRCVINFO notifications. */
	test_enable_assoc_change(udp_svr_sk);
	test_enable_assoc_change(udp_clt_sk);

	/* Bind these sockets to the test ports.  */
	test_bind(udp_svr_sk, &udp_svr_loop.sa, sizeof(udp_svr_loop));
	test_bind(udp_clt_sk, &udp_clt_loop.sa, sizeof(udp_clt_loop));

	/* Mark udp_svr_sk as being able to accept new associations.  */
	test_listen(udp_svr_sk, 1);

	/* Get the default events that are enabled on udp_svr_sk. */
	optlen = sizeof(subscribe);
	test_getsockopt(udp_svr_sk, SCTP_EVENTS, &subscribe, &optlen);

	/* Get the default events that are enabled on udp_clt_sk. */
	optlen = sizeof(subscribe);
	test_getsockopt(udp_clt_sk, SCTP_EVENTS, &subscribe, &optlen);

	tst_resm(TPASS, "getsockopt(SCTP_EVENTS)");

	/* Disable all the events on udp_svr_sk and udp_clt_sk. */
	memset(&subscribe, 0, sizeof(struct sctp_event_subscribe));
	test_setsockopt(udp_svr_sk, SCTP_EVENTS, &subscribe,
			sizeof(subscribe));
	test_setsockopt(udp_clt_sk, SCTP_EVENTS, &subscribe,
			sizeof(subscribe));

	tst_resm(TPASS, "setsockopt(SCTP_EVENTS)");

	/* Get the updated list of enabled events on udp_svr_sk and
	 * udp_clt_sk.
	 */
	optlen = sizeof(subscribe);
	test_getsockopt(udp_svr_sk, SCTP_EVENTS, &subscribe, &optlen);
	optlen = sizeof(subscribe);
	test_getsockopt(udp_clt_sk, SCTP_EVENTS, &subscribe, &optlen);

	/* Send a message.  This will create the association.  */
	outmessage.msg_iov->iov_base = message;
	outmessage.msg_iov->iov_len = strlen(message) + 1;
	test_sendmsg(udp_clt_sk, &outmessage, 0, strlen(message)+1);

	/* Get the message which was sent.  */
	inmessage.msg_controllen = sizeof(incmsg);
	error = test_recvmsg(udp_svr_sk, &inmessage, MSG_WAITALL);
        test_check_msg_data(&inmessage, error, strlen(message) + 1,
			    MSG_EOR, 0, 0);
	/* Verify that we received the msg without any ancillary data. */
	if (inmessage.msg_controllen != 0)
		tst_brkm(TBROK, tst_exit, "Receive unexpected ancillary"
			 "data");

	/* Enable SCTP_SHUTDOWN_EVENTs on udp_svr_sk. */
	memset(&subscribe, 0, sizeof(struct sctp_event_subscribe));
	subscribe.sctp_shutdown_event = 1;
	test_setsockopt(udp_svr_sk, SCTP_EVENTS, &subscribe,
			sizeof(subscribe));

	error = 0;
        /* Shut down the link.  */
        close(udp_clt_sk);

	/* Get the SHUTDOWN_EVENT notification on udp_svr_sk. */
	inmessage.msg_controllen = sizeof(incmsg);
	error = test_recvmsg(udp_svr_sk, &inmessage, MSG_WAITALL);
	test_check_msg_notification(&inmessage, error,
				    sizeof(struct sctp_shutdown_event),
				    SCTP_SHUTDOWN_EVENT, 0);	

	tst_resm(TPASS, "setsockopt(SCTP_EVENTS) - SCTP_SHUTDOWN_EVENT");
 
        close(udp_svr_sk);

	/* TEST #3: whether sctp_opt_info equals */
        /* Create the two endpoints which will talk to each other.  */
	udp_svr_sk = test_socket(pf_class, SOCK_SEQPACKET, IPPROTO_SCTP);
	udp_clt_sk = test_socket(pf_class, SOCK_SEQPACKET, IPPROTO_SCTP);

	/* Enable ASSOC_CHANGE and SNDRCVINFO notifications. */
	test_enable_assoc_change(udp_svr_sk);
	test_enable_assoc_change(udp_clt_sk);

	/* Bind these sockets to the test ports.  */
	test_bind(udp_svr_sk, &udp_svr_loop.sa, sizeof(udp_svr_loop));
	test_bind(udp_clt_sk, &udp_clt_loop.sa, sizeof(udp_clt_loop));

	/* Mark udp_svr_sk as being able to accept new associations.  */
	test_listen(udp_svr_sk, 1);

        /* Send the first message.  This will create the association.  */
        outmessage.msg_name = &udp_svr_loop;
        outmessage.msg_namelen = sizeof(udp_svr_loop);
        outmessage.msg_iov = &out_iov;
        outmessage.msg_iovlen = 1;
        outmessage.msg_control = outcmsg;
        outmessage.msg_controllen = sizeof(outcmsg);