1/* SCTP kernel Implementation 2 * (C) Copyright IBM Corp. 2001, 2003 3 * Copyright (c) 1999-2000 Cisco, Inc. 4 * Copyright (c) 1999-2001 Motorola, Inc. 5 * Copyright (c) 2001 Intel Corp. 6 * Copyright (c) 2001 Nokia, Inc. 7 * 8 * The SCTP implementation is free software; 9 * you can redistribute it and/or modify it under the terms of 10 * the GNU General Public License as published by 11 * the Free Software Foundation; either version 2, or (at your option) 12 * any later version. 13 * 14 * The SCTP implementation is distributed in the hope that it 15 * will be useful, but WITHOUT ANY WARRANTY; without even the implied 16 * ************************ 17 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 18 * See the GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with GNU CC; see the file COPYING. If not, write to 22 * the Free Software Foundation, 59 Temple Place - Suite 330, 23 * Boston, MA 02111-1307, USA. 24 * 25 * Please send any bug reports or fixes you make to the 26 * email address(es): 27 * lksctp developers <lksctp-developers@lists.sourceforge.net> 28 * 29 * Or submit a bug report through the following website: 30 * http://www.sf.net/projects/lksctp 31 * 32 * Any bugs reported to us we will try to fix... any fixes shared will 33 * be incorporated into the next SCTP release. 34 * 35 * Written or modified by: 36 * Sridhar Samudrala <sri@us.ibm.com> 37 */ 38 39/* This is a functional test to verify the graceful shutdown of an 40 * association. 41 */ 42 43#include <stdio.h> 44#include <unistd.h> 45#include <stdlib.h> 46#include <string.h> 47#include <sys/types.h> 48#include <sys/socket.h> 49#include <sys/uio.h> 50#include <netinet/in.h> 51#include <sys/errno.h> 52#include <errno.h> 53#include <netinet/sctp.h> 54#include <sctputil.h> 55 56char *TCID = __FILE__; 57int TST_TOTAL = 1; 58int TST_CNT = 0; 59 60#define MAX_CLIENTS 10 61#include "tst_kernel.h" 62 63int 64main(void) 65{ 66 int svr_sk, clt_sk[MAX_CLIENTS]; 67 sctp_assoc_t svr_associd[MAX_CLIENTS]; 68 sockaddr_storage_t svr_loop, clt_loop[MAX_CLIENTS]; 69 struct iovec iov; 70 struct msghdr inmessage; 71 struct msghdr outmessage; 72 char incmsg[CMSG_SPACE(sizeof(sctp_cmsg_data_t))]; 73 char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; 74 struct cmsghdr *cmsg; 75 struct sctp_sndrcvinfo *sinfo; 76 struct iovec out_iov; 77 int error; 78 uint32_t ppid; 79 uint32_t stream; 80 struct sctp_assoc_change *sac; 81 char *big_buffer; 82 int i; 83 char *message = "hello, world!\n"; 84 struct sctp_status status; 85 socklen_t status_len; 86 87 if (tst_check_driver("sctp")) 88 tst_brkm(TCONF, tst_exit, "sctp driver not available"); 89 90 /* Rather than fflush() throughout the code, set stdout to 91 * be unbuffered. 92 */ 93 setvbuf(stdout, NULL, _IONBF, 0); 94 95 /* Create and bind the server socket. */ 96 svr_sk = test_socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP); 97 98 svr_loop.v4.sin_family = AF_INET; 99 svr_loop.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK; 100 svr_loop.v4.sin_port = htons(SCTP_TESTPORT_1); 101 test_bind(svr_sk, &svr_loop.sa, sizeof(svr_loop)); 102 103 /* Enable ASSOC_CHANGE and SNDRCVINFO notifications. */ 104 test_enable_assoc_change(svr_sk); 105 106 /* Mark server socket as being able to accept new associations. */ 107 test_listen(svr_sk, 1); 108 109 /* Create and bind all the client sockets. */ 110 for (i = 0; i < MAX_CLIENTS; i++) { 111 clt_sk[i] = test_socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP); 112 113 clt_loop[i].v4.sin_family = AF_INET; 114 clt_loop[i].v4.sin_addr.s_addr = SCTP_IP_LOOPBACK; 115 clt_loop[i].v4.sin_port = htons(SCTP_TESTPORT_2 + i); 116 test_bind(clt_sk[i], &clt_loop[i].sa, sizeof(clt_loop[i])); 117 118 test_enable_assoc_change(clt_sk[i]); 119 } 120 121 /* Build up a msghdr structure we can use for all sending. */ 122 outmessage.msg_name = &svr_loop; 123 outmessage.msg_namelen = sizeof(svr_loop); 124 outmessage.msg_iov = &out_iov; 125 outmessage.msg_iovlen = 1; 126 outmessage.msg_control = outcmsg; 127 outmessage.msg_controllen = sizeof(outcmsg); 128 outmessage.msg_flags = 0; 129 cmsg = CMSG_FIRSTHDR(&outmessage); 130 cmsg->cmsg_level = IPPROTO_SCTP; 131 cmsg->cmsg_type = SCTP_SNDRCV; 132 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); 133 outmessage.msg_controllen = cmsg->cmsg_len; 134 sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 135 memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo)); 136 ppid = rand(); /* Choose an arbitrary value. */ 137 stream = 1; 138 sinfo->sinfo_ppid = ppid; 139 sinfo->sinfo_stream = stream; 140 out_iov.iov_base = message; 141 out_iov.iov_len = strlen(message) + 1; 142 143 /* Send the first message from all the clients to the server. This 144 * will create the associations. 145 */ 146 for (i = 0; i < MAX_CLIENTS; i++) 147 test_sendmsg(clt_sk[i], &outmessage, 0, strlen(message)+1); 148 149 /* Initialize inmessage for all receives. */ 150 big_buffer = test_malloc(REALLY_BIG); 151 memset(&inmessage, 0, sizeof(inmessage)); 152 iov.iov_base = big_buffer; 153 iov.iov_len = REALLY_BIG; 154 inmessage.msg_iov = &iov; 155 inmessage.msg_iovlen = 1; 156 inmessage.msg_control = incmsg; 157 158 /* Get the communication up message on all client sockets. */ 159 for (i = 0; i < MAX_CLIENTS; i++) { 160 inmessage.msg_controllen = sizeof(incmsg); 161 error = test_recvmsg(clt_sk[i], &inmessage, MSG_WAITALL); 162 test_check_msg_notification(&inmessage, error, 163 sizeof(struct sctp_assoc_change), 164 SCTP_ASSOC_CHANGE, SCTP_COMM_UP); 165 } 166 167 /* Get the communication up message and the data message on the 168 * server sockets for all the clients. 169 */ 170 for (i = 0; i < MAX_CLIENTS; i++) { 171 inmessage.msg_controllen = sizeof(incmsg); 172 error = test_recvmsg(svr_sk, &inmessage, MSG_WAITALL); 173 test_check_msg_notification(&inmessage, error, 174 sizeof(struct sctp_assoc_change), 175 SCTP_ASSOC_CHANGE, SCTP_COMM_UP); 176 177 inmessage.msg_controllen = sizeof(incmsg); 178 error = test_recvmsg(svr_sk, &inmessage, MSG_WAITALL); 179 test_check_msg_data(&inmessage, error, strlen(message)+1, 180 MSG_EOR, stream, ppid); 181 sac = (struct sctp_assoc_change *)iov.iov_base; 182 svr_associd[i] = sac->sac_assoc_id; 183 } 184 185 /* Build up a msghdr structure we can use for all sending. */ 186 outmessage.msg_name = NULL; 187 outmessage.msg_namelen = 0; 188 outmessage.msg_iov = NULL; 189 outmessage.msg_iovlen = 0; 190 outmessage.msg_control = outcmsg; 191 outmessage.msg_controllen = sizeof(outcmsg); 192 outmessage.msg_flags = 0; 193 cmsg = CMSG_FIRSTHDR(&outmessage); 194 cmsg->cmsg_level = IPPROTO_SCTP; 195 cmsg->cmsg_type = SCTP_SNDRCV; 196 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); 197 outmessage.msg_controllen = cmsg->cmsg_len; 198 sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 199 memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo)); 200 sinfo->sinfo_flags |= SCTP_EOF; 201 202 /* Shutdown all the associations of the server socket in a loop. */ 203 for (i = 0; i < MAX_CLIENTS; i++) { 204 sinfo->sinfo_assoc_id = svr_associd[i]; 205 206 /* Verify that the association is present. */ 207 memset(&status, 0, sizeof(struct sctp_status)); 208 status.sstat_assoc_id = sinfo->sinfo_assoc_id; 209 status_len = sizeof(struct sctp_status); 210 error = getsockopt(svr_sk, SOL_SCTP, SCTP_STATUS, 211 &status, &status_len); 212 if (error) 213 tst_brkm(TBROK, tst_exit, 214 "getsockopt(SCTP_STATUS): %s", 215 strerror(errno)); 216 217 /* Call sendmsg() to shutdown the association. */ 218 test_sendmsg(svr_sk, &outmessage, 0, 0); 219 220 /* Verify that the association is no longer present. */ 221 memset(&status, 0, sizeof(struct sctp_status)); 222 status.sstat_assoc_id = sinfo->sinfo_assoc_id; 223 status_len = sizeof(struct sctp_status); 224 error = getsockopt(svr_sk, SOL_SCTP, SCTP_STATUS, 225 &status, &status_len); 226 if ((error != -1) && (errno != EINVAL)) 227 tst_brkm(TBROK, tst_exit, 228 "getsockopt(SCTP_STATUS) " 229 "error:%d errno:%d", error, errno); 230 } 231 232 close(svr_sk); 233 234 /* Get the shutdown complete notification. */ 235 for (i = 0; i < MAX_CLIENTS; i++) { 236 inmessage.msg_controllen = sizeof(incmsg); 237 error = test_recvmsg(clt_sk[i], &inmessage, MSG_WAITALL); 238 test_check_msg_notification(&inmessage, error, 239 sizeof(struct sctp_assoc_change), 240 SCTP_ASSOC_CHANGE, 241 SCTP_SHUTDOWN_COMP); 242 243 close(clt_sk[i]); 244 } 245 246 tst_resm(TPASS, "Graceful shutdown of associations using SCTP_EOF"); 247 248 /* Indicate successful completion. */ 249 return 0; 250} 251