1 /*
2 * Copyright (c) 2012-2015 Texas Instruments Incorporated - http://www.ti.com
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * * Neither the name of Texas Instruments Incorporated nor the names of
17 * its contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32 /*
33 * @file SocketFxns.c
34 *
35 * @brief Shared socket functions.
36 */
38 /* Standard headers */
39 #include <ti/ipc/Std.h>
41 /* Socket Headers */
42 #include <sys/types.h>
43 #include <sys/socket.h>
44 #include <errno.h>
45 #include <stdio.h>
46 #include <string.h>
47 #include <stdlib.h>
49 /* Socket Protocol Family */
50 #include <net/rpmsg.h>
52 /* For PRINTVERBOSE* */
53 #include <_lad.h>
55 /* For MultiProc id to remoteproc index map */
56 #include <_MultiProc.h>
58 /* Traces in this file are controlled via _SocketFxns_verbose
59 *
60 * Caution! This file is used by both LAD and TransportRpmsg. The
61 * PRINTVERBOSE macros use printf(), which sends its output to
62 * STDOUT (fd = 0). However, LAD closes STDOUT and by unfortunate
63 * chance, the file descriptor zero (fd = 0) is reused for the outbound
64 * pipe to the first client. This means all trace messages go into
65 * the pipe and corrupt the data on the client side.
67 * If you want to enable this trace for LAD, in addition to setting
68 * _SocketFxns_versbose to TRUE below, you must also comment out the
69 * three calls to close() in linux/src/daemon/lad.c:
70 *
71 * close(STDIN_FILENO);
72 * close(STDOUT_FILENO);
73 * close(STDERR_FILENO);
74 *
75 * If you only want to enable trace in the client (i.e. calls from
76 * TransportRpmsg), then simply set the environment variable IPC_DEBUG
77 * (to either 2 or 3) before you run your program.
78 *
79 * IPC_DEBUG=3 ./app_host
80 */
81 Bool _SocketFxns_verbose = FALSE;
82 #define verbose _SocketFxns_verbose
84 int ConnectSocket(int sock, UInt16 procId, int dst)
85 {
86 int err;
87 struct sockaddr_rpmsg srcAddr, dstAddr;
88 socklen_t len;
89 UInt16 clusterId;
91 /* map procId to clusterId (rprocList[] indexed by clusterId) */
92 clusterId = procId - _MultiProc_cfg.baseIdOfCluster;
94 /* connect to remote service */
95 memset(&dstAddr, 0, sizeof(dstAddr));
96 dstAddr.family = AF_RPMSG;
97 /* convert MultiProc 'clusterId' to remoteproc index */
98 dstAddr.vproc_id = _MultiProc_cfg.rprocList[clusterId];
99 dstAddr.addr = dst;
101 len = sizeof(struct sockaddr_rpmsg);
102 err = connect(sock, (struct sockaddr *)&dstAddr, len);
103 if (err < 0) {
104 /* don't hard-printf since this is no longer fatal */
105 PRINTVERBOSE2("connect failed: %s (%d)\n", strerror(errno), errno);
106 return (-1);
107 }
109 /* let's see what local address we got */
110 err = getsockname(sock, (struct sockaddr *)&srcAddr, &len);
111 if (err < 0) {
112 printf("getpeername failed: %s (%d)\n", strerror(errno), errno);
113 return (-1);
114 }
116 PRINTVERBOSE3("Connected over sock: %d\n\tdst vproc_id: %d, dst addr: %d\n",
117 sock, dstAddr.vproc_id, dstAddr.addr)
118 PRINTVERBOSE2("\tsrc vproc_id: %d, src addr: %d\n",
119 srcAddr.vproc_id, srcAddr.addr)
121 return(0);
122 }
124 int SocketBindAddr(int fd, UInt16 procId, UInt32 localAddr)
125 {
126 int err;
127 socklen_t len;
128 struct sockaddr_rpmsg srcAddr;
129 UInt16 clusterId;
131 /* map procId to clusterId (rprocList[] indexed by clusterId) */
132 clusterId = procId - _MultiProc_cfg.baseIdOfCluster;
134 /* Now bind to the source address. */
135 memset(&srcAddr, 0, sizeof(srcAddr));
136 srcAddr.family = AF_RPMSG;
137 /* We bind the remote clusterId, but local address! */
138 srcAddr.vproc_id = _MultiProc_cfg.rprocList[clusterId];
139 srcAddr.addr = localAddr;
141 len = sizeof(struct sockaddr_rpmsg);
142 err = bind(fd, (struct sockaddr *)&srcAddr, len);
143 if (err >= 0) {
144 PRINTVERBOSE3("socket_bind_addr: bound sock: %d\n\tto dst "
145 "vproc_id: %d, src addr: %d\n",
146 fd, srcAddr.vproc_id, srcAddr.addr)
148 /* let's see what local address we got */
149 err = getsockname(fd, (struct sockaddr *)&srcAddr, &len);
150 if (err < 0) {
151 printf("getsockname failed: %s (%d)\n", strerror(errno), errno);
152 }
153 else {
154 PRINTVERBOSE2("\tsrc vproc_id: %d, src addr: %d\n",
155 srcAddr.vproc_id, srcAddr.addr)
156 }
157 }
159 return (err);
160 }