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53 #include <sys/types.h>
54 #include <sys/socket.h>
55 #include <sys/ioctl.h>
59 #include <linux/can.h>
60 #include <linux/can/bcm.h>
62 #define U64_DATA(p) (*(unsigned long long*)(p)->data)
64 int main(int argc, char **argv)
67 struct sockaddr_can addr;
71 struct bcm_msg_head msg_head;
72 struct can_frame frame;
75 if ((s = socket(PF_CAN, SOCK_DGRAM, CAN_BCM)) < 0) {
80 addr.can_family = PF_CAN;
81 addr.can_ifindex = 0; /* bind to 'any' device */
83 if (connect(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
88 txmsg.msg_head.opcode = TX_SETUP;
89 txmsg.msg_head.can_id = 0x42;
90 txmsg.msg_head.flags = SETTIMER|STARTTIMER;
91 txmsg.msg_head.nframes = 1;
92 txmsg.msg_head.count = 10;
93 txmsg.msg_head.ival1.tv_sec = 1;
94 txmsg.msg_head.ival1.tv_usec = 0;
95 txmsg.msg_head.ival2.tv_sec = 0;
96 txmsg.msg_head.ival2.tv_usec = 0;
97 txmsg.frame.can_id = 0x42;
98 txmsg.frame.can_dlc = 8;
99 U64_DATA(&txmsg.frame) = (__u64) 0xdeadbeefdeadbeefULL;
101 /* should cause an error due to ifindex = 0 */
102 if (write(s, &txmsg, sizeof(txmsg)) < 0)
105 printf("Press any key to send on valid device ...\n");
108 addr.can_family = PF_CAN;
109 strcpy(ifr.ifr_name, "vcan2");
110 ioctl(s, SIOCGIFINDEX, &ifr);
111 addr.can_ifindex = ifr.ifr_ifindex;
113 if (sendto(s, &txmsg, sizeof(txmsg), 0, (struct sockaddr*)&addr, sizeof(addr)) < 0)
116 printf("Press any key to close the socket ...\n");