SocketCAN: No telegrams received

Question

I want to receive messages periodically using socketCAN. But the program didnt receive any telegrams. I think one problem may be the telegram ID inside the BCM.

Can somebody help me with a hint?

Thank you

Edit: The goal is to send and to receive can frames on the embedded hw device. I am able to send can frames from the hw to the connected pc. Thats still working fine. But actual I am not able to receive any can frames, which where send from the pc. The bitrate is actual 125000. I think one problem is, that I have to subscribe the can-id of the received telegrams to the broad cast manager. But I cant find an example in the documentation. If I run the code with strace on the hw, I can see the code stucks at the recvfrom() method.

/* Create the socket */
int skt = socket(PF_CAN, SOCK_DGRAM, CAN_BCM);

/* Locate the interface can0 */
struct ifreq ifr;
strcpy(ifr.ifr_name, "can0");

/* Set that interface in the address structure */
struct sockaddr_can addr;
socklen_t addrlen = sizeof(addr);
addr.can_family = PF_CAN;
addr.can_ifindex = 0;
 
/* Connect the socket to that interface */
ret = connect(skt, (struct sockaddr *) &addr, sizeof(addr));

/* Create a struct to set up a sequence of one CAN frame */
struct {
        struct bcm_msg_head msg_head;
        struct can_frame frame[1];
} msg;

msg.msg_head.opcode = RX_SETUP;
msg.msg_head.flags = RX_FILTER_ID | SETTIMER;
msg.frame[0].can_id = 0x123;
 
nbytes = recvfrom(skt, &msg.frame, sizeof(struct can_frame), 0, (struct sockaddr*) &addr, &addrlen);