1 /* SCTP kernel Implementation
2 * Copyright (c) 2003 Hewlett-Packard Development Company, L.P
3 * (C) Copyright IBM Corp. 2004
4 *
5 * This file has test cases to test the Non-Blocking mode of connect(),
6 * accept() and recvmsg() calls.
7 *
8 * TEST1: Non blocking accept return EAGAIN if connect is not called
9 * TEST2: Non blocking connect should return EINPROGRESS
10 * TEST3: accept() passes when connect called in Non-blocking mode
11 * TEST4: Non blocking recvmsg should return EAGAIN
12 * TEST5: recvmsg() should succeed if data present to receive in non blocking
13 * mode
14 *
15 * The SCTP implementation is free software;
16 * you can redistribute it and/or modify it under the terms of
17 * the GNU General Public License as published by
18 * the Free Software Foundation; either version 2, or (at your option)
19 * any later version.
20 *
21 * The SCTP implementation is distributed in the hope that it
22 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
23 * ************************
24 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
25 * See the GNU General Public License for more details.
26 *
27 * You should have received a copy of the GNU General Public License
28 * along with GNU CC; see the file COPYING. If not, write to
29 * the Free Software Foundation, 59 Temple Place - Suite 330,
30 * Boston, MA 02111-1307, USA.
31 *
32 * Please send any bug reports or fixes you make to the
33 * email address(es):
34 * lksctp developers <lksctp-developers@lists.sourceforge.net>
35 *
36 * Or submit a bug report through the following website:
37 * http://www.sf.net/projects/lksctp
38 *
39 * Any bugs reported given to us we will try to fix... any fixes shared will
40 * be incorporated into the next SCTP release
41 *
42 */
43
44 #include <stdio.h>
45 #include <unistd.h>
46 #include <fcntl.h>
47 #include <stdlib.h>
48 #include <string.h>
49 #include <sys/types.h>
50 #include <sys/socket.h>
51 #include <netinet/in.h> /* for sockaddr_in */
52 #include <arpa/inet.h>
53 #include <errno.h>
54 #include <netinet/sctp.h>
55 #include <sys/uio.h>
56 #include <linux/socket.h>
57 #include <sctputil.h>
58
59 char *TCID = __FILE__;
60 int TST_TOTAL = 5;
61 int TST_CNT = 0;
62
63 int
main(int argc,char * argv[])64 main(int argc, char *argv[])
65 {
66 int error,msg_count;
67 socklen_t len;
68 int sk,pf_class,lstn_sk,acpt_sk,flag,cflag,sflag;
69 struct msghdr outmessage;
70 struct msghdr inmessage;
71 char *message = "hello, world!\n";
72 struct iovec iov_rcv;
73 struct sctp_sndrcvinfo *sinfo;
74 char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
75 struct cmsghdr *cmsg;
76 struct iovec out_iov;
77 char * buffer_rcv;
78 char incmsg[CMSG_SPACE(sizeof(sctp_cmsg_data_t))];
79
80 struct sockaddr_in conn_addr,lstn_addr,svr_addr;
81
82 /* Rather than fflush() throughout the code, set stdout to
83 * be unbufferd
84 */
85 setvbuf(stdout, NULL, _IONBF, 0);
86 setvbuf(stderr, NULL, _IONBF, 0);
87
88 pf_class = PF_INET;
89
90 sk = test_socket(pf_class, SOCK_STREAM, IPPROTO_SCTP);
91
92 lstn_sk = test_socket(pf_class, SOCK_STREAM, IPPROTO_SCTP);
93
94 conn_addr.sin_family = AF_INET;
95 conn_addr.sin_addr.s_addr = SCTP_IP_LOOPBACK;
96 conn_addr.sin_port = htons(SCTP_TESTPORT_1);
97
98 lstn_addr.sin_family = AF_INET;
99 lstn_addr.sin_addr.s_addr = SCTP_IP_LOOPBACK;
100 lstn_addr.sin_port = htons(SCTP_TESTPORT_1);
101
102 /*Binding the listen socket*/
103 test_bind(lstn_sk, (struct sockaddr *) &lstn_addr, sizeof(lstn_addr));
104
105 /*Listening the socket*/
106 test_listen(lstn_sk, 10);
107
108 len = sizeof(struct sockaddr_in);
109 flag = MSG_NOSIGNAL;
110
111 /*Setting server socket non-blocking*/
112 sflag = fcntl(lstn_sk, F_GETFL, 0);
113 if (sflag < 0)
114 tst_brkm(TBROK, tst_exit, "fcnt F_GETFL failed "
115 "sflag:%d, errno:%d", sflag, errno);
116
117 error = fcntl(lstn_sk, F_SETFL, sflag | O_NONBLOCK);
118 if (error < 0)
119 tst_brkm(TBROK, tst_exit, "fcnt F_SETFL failed "
120 "error:%d, errno:%d", error, errno);
121
122 /* TEST1: accept should return EAGAIN instead blocking. */
123 error = accept(lstn_sk, (struct sockaddr *)&svr_addr, &len);
124 if (error != -1 || errno != EAGAIN)
125 tst_brkm(TBROK, tst_exit, "non-blocking accept "
126 "error:%d, errno:%d", error, errno);
127
128 tst_resm(TPASS, "non-blocking accept() - EAGAIN");
129
130 /* TEST2: Non Block connect should return EINPROGRESS */
131 /*Set client socket as non-blocking*/
132 cflag = fcntl(sk, F_GETFL, 0);
133 if (cflag < 0)
134 tst_brkm(TBROK, tst_exit, "fcnt F_GETFL failed "
135 "cflag:%d, errno:%d", cflag, errno);
136
137 error = fcntl(sk, F_SETFL, sflag | O_NONBLOCK);
138 if (error < 0)
139 tst_brkm(TBROK, tst_exit, "fcnt F_SETFL failed "
140 "error:%d, errno:%d", error, errno);
141
142 error = connect(sk, (const struct sockaddr *) &conn_addr, len);
143 if (error != -1 || errno != EINPROGRESS)
144 tst_brkm(TBROK, tst_exit, "non-blocking connect "
145 "error:%d, errno:%d", error, errno);
146
147 tst_resm(TPASS, "non-blocking connect() - EINPROGRESS");
148
149 /* TEST3: Now that connect() called, accept will succeed */
150 acpt_sk = accept(lstn_sk, (struct sockaddr *)&svr_addr, &len);
151 if (acpt_sk < 0)
152 tst_brkm(TBROK, tst_exit, "accept after a non-blocking connect "
153 "error:%d, errno:%d", error, errno);
154
155 tst_resm(TPASS, "accept() after a non-blocking connect - SUCCESS");
156
157 memset(&outmessage, 0, sizeof(outmessage));
158 outmessage.msg_name = &svr_addr;
159 outmessage.msg_namelen = sizeof(svr_addr);
160 outmessage.msg_iov = &out_iov;
161 outmessage.msg_iovlen = 1;
162 outmessage.msg_control = outcmsg;
163 outmessage.msg_controllen = sizeof(outcmsg);
164 outmessage.msg_flags = 0;
165
166 cmsg = CMSG_FIRSTHDR(&outmessage);
167 cmsg->cmsg_level = IPPROTO_SCTP;
168 cmsg->cmsg_type = SCTP_SNDRCV;
169 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
170 outmessage.msg_controllen = cmsg->cmsg_len;
171 sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
172 memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo));
173
174 outmessage.msg_iov->iov_base = message;
175 outmessage.msg_iov->iov_len = strlen(message) + 1;
176
177 memset(&inmessage, 0, sizeof(inmessage));
178 buffer_rcv = malloc(REALLY_BIG);
179
180 iov_rcv.iov_base = buffer_rcv;
181 iov_rcv.iov_len = REALLY_BIG;
182 inmessage.msg_iov = &iov_rcv;
183 inmessage.msg_iovlen = 1;
184 inmessage.msg_control = incmsg;
185 inmessage.msg_controllen = sizeof(incmsg);
186
187 msg_count = strlen(message) + 1;
188
189 /* TEST4: recvmsg() should return EAGAIN instead blocking */
190 error = recvmsg(sk, &inmessage, MSG_WAITALL);
191 if ( error != -1 || errno != EAGAIN)
192 tst_brkm(TBROK, tst_exit, "non-blocking recvmsg "
193 "error:%d, errno:%d", error, errno);
194
195 tst_resm(TPASS, "non-blocking recvmsg() - EAGAIN");
196
197 test_sendmsg(acpt_sk, &outmessage, flag, msg_count);
198
199 /* TEST5: recvmsg() should succeed now as data is available. */
200 error = test_recvmsg(sk, &inmessage, flag);
201 test_check_msg_data(&inmessage, error, msg_count, MSG_EOR, 0, 0);
202
203 tst_resm(TPASS, "non-blocking recvmsg() when data is available - "
204 "SUCCESS");
205
206 close(lstn_sk);
207 close(acpt_sk);
208 return 0;
209 }
210