bc1962b0875f1885b064d3d9115843108b6be881
1 /*
2 * Copyright (c) 2012-2013, Texas Instruments Incorporated
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 * ======== ping_rpmsg.c ========
34 *
35 * Works with the ping_rpmsg BIOS sample over the rpmsg-proto socket.
36 */
38 #include <sys/select.h>
39 #include <sys/time.h>
40 #include <sys/types.h>
41 #include <sys/socket.h>
42 #include <errno.h>
43 #include <stdio.h>
44 #include <string.h>
45 #include <stdlib.h>
46 #include <unistd.h>
47 #include <time.h>
49 /* Ipc Socket Protocol Family */
50 #include <net/rpmsg.h>
52 #define CORE0 (0) /* This should be MultiProc_getId("CORE0") - 1 */
54 #define NUMLOOPS 100
56 long diff(struct timespec start, struct timespec end)
57 {
58 struct timespec temp;
60 if ((end.tv_nsec - start.tv_nsec) < 0) {
61 temp.tv_sec = end.tv_sec - start.tv_sec-1;
62 temp.tv_nsec = 1000000000UL + end.tv_nsec - start.tv_nsec;
63 } else {
64 temp.tv_sec = end.tv_sec - start.tv_sec;
65 temp.tv_nsec = end.tv_nsec - start.tv_nsec;
66 }
68 return (temp.tv_sec * 1000000UL + temp.tv_nsec / 1000);
69 }
71 int main(void)
72 {
73 int sock, err;
74 struct sockaddr_rpmsg src_addr, dst_addr;
75 socklen_t len;
76 const char *msg = "Ping!";
77 char buf[512];
78 struct timespec start,end;
79 long elapsed=0,delta;
80 int i;
82 /* create an RPMSG socket */
83 /* QNX PORTING NOTE: call fd = open("/dev/????", ...); */
84 sock = socket(AF_RPMSG, SOCK_SEQPACKET, 0);
85 if (sock < 0) {
86 printf("socket failed: %s (%d)\n", strerror(errno), errno);
87 return -1;
88 }
90 /* connect to remote service */
91 memset(&dst_addr, 0, sizeof(dst_addr));
92 dst_addr.family = AF_RPMSG;
93 dst_addr.vproc_id = CORE0;
94 dst_addr.addr = 51; // use 51 for ping_tasks;
95 //dst_addr.addr = 61; // use 61 for messageQ transport;
97 printf("Connecting to address 0x%x on vprocId %d\n",
98 dst_addr.addr, dst_addr.vproc_id);
100 len = sizeof(struct sockaddr_rpmsg);
101 /* QNX PORTING NOTE: call ioctl(fd, CONNECT_IOTL, *args)*/
102 err = connect(sock, (struct sockaddr *)&dst_addr, len);
103 if (err < 0) {
104 printf("connect failed: %s (%d)\n", strerror(errno), errno);
105 return -1;
106 }
108 /* let's see what local address we got */
109 /* QNX PORTING NOTE: call ioctl(fd, GETLOCALENDPOINT_IOTL, *args)*/
110 err = getsockname(sock, (struct sockaddr *)&src_addr, &len);
111 if (err < 0) {
112 printf("getpeername failed: %s (%d)\n", strerror(errno), errno);
113 return -1;
114 }
116 printf("Our address: socket family: %d, proc id = %d, addr = %d\n",
117 src_addr.family, src_addr.vproc_id, src_addr.addr);
119 printf("Sending \"%s\" in a loop.\n", msg);
121 for (i = 0; i < NUMLOOPS; i++) {
122 clock_gettime(CLOCK_REALTIME, &start);
124 /* QNX PORTING NOTE: call write(fd, msg,len); */
125 err = send(sock, msg, strlen(msg) + 1, 0);
126 if (err < 0) {
127 printf("sendto failed: %s (%d)\n", strerror(errno), errno);
128 return -1;
129 }
131 memset(&src_addr, 0, sizeof(src_addr));
133 len = sizeof(src_addr);
135 /* QNX PORTING NOTE: len = read(fd, buf, len); */
136 err = recvfrom(sock, buf, sizeof(buf), 0,
137 (struct sockaddr *)&src_addr, &len);
139 if (err < 0) {
140 printf("recvfrom failed: %s (%d)\n", strerror(errno), errno);
141 return -1;
142 }
143 if (len != sizeof(src_addr)) {
144 printf("recvfrom: got bad addr len (%d)\n", len);
145 return -1;
146 }
148 clock_gettime(CLOCK_REALTIME, &end);
149 delta = diff(start,end);
150 elapsed += delta;
152 printf("%d: Received msg: %s, from: %d\n", i, buf, src_addr.addr);
154 /*
155 printf ("Message time: %ld usecs\n", delta);
156 printf("Received a msg from address 0x%x on processor %d\n",
157 src_addr.addr, src_addr.vproc_id);
158 printf("Message content: \"%s\".\n", buf);
159 */
160 }
161 printf ("Avg time: %ld usecs over %d iterations\n", elapsed / i, i);
163 /* QNX PORTING NOTE: close(fd); */
164 close(sock);
166 return 0;
167 }