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 #include "tst_kernel.h"
59
60 char *TCID = __FILE__;
61 int TST_TOTAL = 5;
62 int TST_CNT = 0;
63
64 int
main(void)65 main(void)
66 {
67 int error,msg_count;
68 socklen_t len;
69 int sk,pf_class,lstn_sk,acpt_sk,flag,cflag,sflag;
70 struct msghdr outmessage;
71 struct msghdr inmessage;
72 char *message = "hello, world!\n";
73 struct iovec iov_rcv;
74 struct sctp_sndrcvinfo *sinfo;
75 char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
76 struct cmsghdr *cmsg;
77 struct iovec out_iov;
78 char * buffer_rcv;
79 char incmsg[CMSG_SPACE(sizeof(sctp_cmsg_data_t))];
80
81 struct sockaddr_in conn_addr,lstn_addr,svr_addr;
82
83 if (tst_check_driver("sctp"))
84 tst_brkm(TCONF, tst_exit, "sctp driver not available");
85
86 /* Rather than fflush() throughout the code, set stdout to
87 * be unbufferd
88 */
89 setvbuf(stdout, NULL, _IONBF, 0);
90 setvbuf(stderr, NULL, _IONBF, 0);
91
92 pf_class = PF_INET;
93
94 sk = test_socket(pf_class, SOCK_STREAM, IPPROTO_SCTP);
95
96 lstn_sk = test_socket(pf_class, SOCK_STREAM, IPPROTO_SCTP);
97
98 conn_addr.sin_family = AF_INET;
99 conn_addr.sin_addr.s_addr = SCTP_IP_LOOPBACK;
100 conn_addr.sin_port = htons(SCTP_TESTPORT_1);
101
102 lstn_addr.sin_family = AF_INET;
103 lstn_addr.sin_addr.s_addr = SCTP_IP_LOOPBACK;
104 lstn_addr.sin_port = htons(SCTP_TESTPORT_1);
105
106 /*Binding the listen socket*/
107 test_bind(lstn_sk, (struct sockaddr *) &lstn_addr, sizeof(lstn_addr));
108
109 /*Listening the socket*/
110 test_listen(lstn_sk, 10);
111
112 len = sizeof(struct sockaddr_in);
113 flag = MSG_NOSIGNAL;
114
115 /*Setting server socket non-blocking*/
116 sflag = fcntl(lstn_sk, F_GETFL, 0);
117 if (sflag < 0)
118 tst_brkm(TBROK, tst_exit, "fcnt F_GETFL failed "
119 "sflag:%d, errno:%d", sflag, errno);
120
121 error = fcntl(lstn_sk, F_SETFL, sflag | O_NONBLOCK);
122 if (error < 0)
123 tst_brkm(TBROK, tst_exit, "fcnt F_SETFL failed "
124 "error:%d, errno:%d", error, errno);
125
126 /* TEST1: accept should return EAGAIN instead blocking. */
127 error = accept(lstn_sk, (struct sockaddr *)&svr_addr, &len);
128 if (error != -1 || errno != EAGAIN)
129 tst_brkm(TBROK, tst_exit, "non-blocking accept "
130 "error:%d, errno:%d", error, errno);
131
132 tst_resm(TPASS, "non-blocking accept() - EAGAIN");
133
134 /* TEST2: Non Block connect should return EINPROGRESS */
135 /*Set client socket as non-blocking*/
136 cflag = fcntl(sk, F_GETFL, 0);
137 if (cflag < 0)
138 tst_brkm(TBROK, tst_exit, "fcnt F_GETFL failed "
139 "cflag:%d, errno:%d", cflag, errno);
140
141 error = fcntl(sk, F_SETFL, sflag | O_NONBLOCK);
142 if (error < 0)
143 tst_brkm(TBROK, tst_exit, "fcnt F_SETFL failed "
144 "error:%d, errno:%d", error, errno);
145
146 error = connect(sk, (const struct sockaddr *) &conn_addr, len);
147 if (error != -1 || errno != EINPROGRESS)
148 tst_brkm(TBROK, tst_exit, "non-blocking connect "
149 "error:%d, errno:%d", error, errno);
150
151 tst_resm(TPASS, "non-blocking connect() - EINPROGRESS");
152
153 /* TEST3: Now that connect() called, accept will succeed */
154 acpt_sk = accept(lstn_sk, (struct sockaddr *)&svr_addr, &len);
155 if (acpt_sk < 0)
156 tst_brkm(TBROK, tst_exit, "accept after a non-blocking connect "
157 "error:%d, errno:%d", error, errno);
158
159 tst_resm(TPASS, "accept() after a non-blocking connect - SUCCESS");
160
161 memset(&outmessage, 0, sizeof(outmessage));
162 outmessage.msg_name = &svr_addr;
163 outmessage.msg_namelen = sizeof(svr_addr);
164 outmessage.msg_iov = &out_iov;
165 outmessage.msg_iovlen = 1;
166 outmessage.msg_control = outcmsg;
167 outmessage.msg_controllen = sizeof(outcmsg);
168 outmessage.msg_flags = 0;
169
170 cmsg = CMSG_FIRSTHDR(&outmessage);
171 cmsg->cmsg_level = IPPROTO_SCTP;
172 cmsg->cmsg_type = SCTP_SNDRCV;
173 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
174 outmessage.msg_controllen = cmsg->cmsg_len;
175 sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
176 memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo));
177
178 outmessage.msg_iov->iov_base = message;
179 outmessage.msg_iov->iov_len = strlen(message) + 1;
180
181 memset(&inmessage, 0, sizeof(inmessage));
182 buffer_rcv = malloc(REALLY_BIG);
183
184 iov_rcv.iov_base = buffer_rcv;
185 iov_rcv.iov_len = REALLY_BIG;
186 inmessage.msg_iov = &iov_rcv;
187 inmessage.msg_iovlen = 1;
188 inmessage.msg_control = incmsg;
189 inmessage.msg_controllen = sizeof(incmsg);
190
191 msg_count = strlen(message) + 1;
192
193 /* TEST4: recvmsg() should return EAGAIN instead blocking */
194 error = recvmsg(sk, &inmessage, MSG_WAITALL);
195 if ( error != -1 || errno != EAGAIN)
196 tst_brkm(TBROK, tst_exit, "non-blocking recvmsg "
197 "error:%d, errno:%d", error, errno);
198
199 tst_resm(TPASS, "non-blocking recvmsg() - EAGAIN");
200
201 test_sendmsg(acpt_sk, &outmessage, flag, msg_count);
202
203 /* TEST5: recvmsg() should succeed now as data is available. */
204 error = test_recvmsg(sk, &inmessage, flag);
205 test_check_msg_data(&inmessage, error, msg_count, MSG_EOR, 0, 0);
206
207 tst_resm(TPASS, "non-blocking recvmsg() when data is available - "
208 "SUCCESS");
209
210 close(lstn_sk);
211 close(acpt_sk);
212 return 0;
213 }
214