1 /* SCTP kernel Implementation
2 * (C) Copyright IBM Corp. 2002, 2003
3 * Copyright (c) 1999-2001 Motorola, Inc.
4 *
5 * This file is part of the SCTP kernel Implementation
6 *
7 * The SCTP implementation is free software;
8 * you can redistribute it and/or modify it under the terms of
9 * the GNU General Public License as published by
10 * the Free Software Foundation; either version 2, or (at your option)
11 * any later version.
12 *
13 * The SCTP implementation is distributed in the hope that it
14 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
15 * ************************
16 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
17 * See the GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with GNU CC; see the file COPYING. If not, write to
21 * the Free Software Foundation, 59 Temple Place - Suite 330,
22 * Boston, MA 02111-1307, USA.
23 *
24 * Please send any bug reports or fixes you make to the
25 * email address(es):
26 * lksctp developers <lksctp-developers@lists.sourceforge.net>
27 *
28 * Or submit a bug report through the following website:
29 * http://www.sf.net/projects/lksctp
30 *
31 * Written or modified by:
32 * Sridhar Samudrala <sri@us.ibm.com>
33 *
34 * Any bugs reported to us we will try to fix... any fixes shared will
35 * be incorporated into the next SCTP release.
36 */
37
38 /* This is a kernel test to verify
39 * 1. MSG_EOR flag is set correctly when a single message is read using multiple
40 * recvmsg() calls.
41 * 2. MSG_PEEK support.
42 */
43
44 #include <stdio.h>
45 #include <unistd.h>
46 #include <stdlib.h>
47 #include <string.h>
48 #include <fcntl.h>
49 #include <sys/types.h>
50 #include <sys/socket.h>
51 #include <sys/uio.h>
52 #include <netinet/in.h>
53 #include <errno.h>
54 #include <netinet/sctp.h>
55 #include <sctputil.h>
56 #include "tst_kernel.h"
57
58 char *TCID = __FILE__;
59 int TST_TOTAL = 2;
60 int TST_CNT = 0;
61
62 int
main(void)63 main(void)
64 {
65 int svr_sk, clt_sk;
66 struct sockaddr_in svr_loop, clt_loop;
67 struct iovec iov, out_iov;
68 struct msghdr inmessage, outmessage;
69 char incmsg[CMSG_SPACE(sizeof(sctp_cmsg_data_t))];
70 int error, msglen, i;
71 char *big_buffer;
72 void *msg_buf;
73
74 if (tst_check_driver("sctp"))
75 tst_brkm(TCONF, tst_exit, "sctp driver not available");
76
77 /* Rather than fflush() throughout the code, set stdout to
78 * be unbuffered.
79 */
80 setvbuf(stdout, NULL, _IONBF, 0);
81
82 /* Initialize the server and client addresses. */
83 svr_loop.sin_family = AF_INET;
84 svr_loop.sin_addr.s_addr = SCTP_IP_LOOPBACK;
85 svr_loop.sin_port = htons(SCTP_TESTPORT_1);
86 clt_loop.sin_family = AF_INET;
87 clt_loop.sin_addr.s_addr = SCTP_IP_LOOPBACK;
88 clt_loop.sin_port = htons(SCTP_TESTPORT_2);
89
90 /* Create and bind the server socket. */
91 svr_sk = test_socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
92 test_bind(svr_sk, (struct sockaddr *)&svr_loop, sizeof(svr_loop));
93
94 /* Mark server socket as being able to accept new associations. */
95 test_listen(svr_sk, 1);
96
97 /* Create and bind the client sockets. */
98 clt_sk = test_socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
99 test_bind(clt_sk, (struct sockaddr *)&clt_loop, sizeof(clt_loop));
100
101 /* Enable ASSOC_CHANGE and SNDRCVINFO notifications. */
102 test_enable_assoc_change(svr_sk);
103 test_enable_assoc_change(clt_sk);
104
105 /* Send a message. This will create the association. */
106 memset(&outmessage, 0, sizeof(outmessage));
107 outmessage.msg_name = &svr_loop;
108 outmessage.msg_namelen = sizeof(svr_loop);
109 outmessage.msg_iov = &out_iov;
110 outmessage.msg_iovlen = 1;
111 msg_buf = test_build_msg(30000);
112 outmessage.msg_iov->iov_base = msg_buf;
113 outmessage.msg_iov->iov_len = 30000;
114 test_sendmsg(clt_sk, &outmessage, 0, 30000);
115
116 /* Initialize inmessage for all receives. */
117 big_buffer = test_malloc(REALLY_BIG);
118 memset(&inmessage, 0, sizeof(inmessage));
119 iov.iov_base = big_buffer;
120 iov.iov_len = 2000;
121 inmessage.msg_iov = &iov;
122 inmessage.msg_iovlen = 1;
123 inmessage.msg_control = incmsg;
124
125 /* Receive COMM_UP on clt_sk. */
126 inmessage.msg_controllen = sizeof(incmsg);
127 error = test_recvmsg(clt_sk, &inmessage, 0);
128 test_check_msg_notification(&inmessage, error,
129 sizeof(struct sctp_assoc_change),
130 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
131
132 /* Receive COMM_UP on svr_sk. */
133 inmessage.msg_controllen = sizeof(incmsg);
134 error = test_recvmsg(svr_sk, &inmessage, MSG_WAITALL);
135 test_check_msg_notification(&inmessage, error,
136 sizeof(struct sctp_assoc_change),
137 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
138
139 /* Read the 30000 byte message using multiple recvmsg() calls in a
140 * loop with 2000 bytes per read.
141 */
142 for (i = 0, msglen = 30000; i < 15; i++, msglen-=2000) {
143 iov.iov_len = REALLY_BIG;
144 inmessage.msg_controllen = sizeof(incmsg);
145 error = test_recvmsg(svr_sk, &inmessage, MSG_PEEK);
146 test_check_msg_data(&inmessage, error, msglen,
147 MSG_EOR, 0, 0);
148
149 iov.iov_len = 2000;
150 inmessage.msg_controllen = sizeof(incmsg);
151 error = test_recvmsg(svr_sk, &inmessage, MSG_WAITALL);
152 test_check_msg_data(&inmessage, error, 2000,
153 ((i==14)?MSG_EOR:0), 0, 0);
154 }
155
156 tst_resm(TPASS, "recvmsg with MSG_PEEK flag");
157 tst_resm(TPASS, "MSG_EOR in msg_flags set correctly");
158
159 close(svr_sk);
160 close(clt_sk);
161
162 /* Indicate successful completion. */
163 return 0;
164 }
165