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/*
* Copyright (c) <2013>, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU Lesser General Public License,
* version 2.1, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
* more details.
*
* You should have received a copy of the GNU Lesser General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <arpa/inet.h>
#include <errno.h>
#include <linux/if.h>
#include <netpacket/packet.h>
#include <pthread.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <pci/pci.h>
#include "avb.h"
#include "listener_mrp_client.h"
#define USE_MRPD 1
/* globals */
unsigned char glob_dest_addr[] = { 0x91, 0xE0, 0xF0, 0x00, 0x0E, 0x80 };
void sigint_handler(int signum)
{
int ret;
fprintf(stderr, "Received signal %d:leaving...\n", signum);
#if USE_MRPD
if (0 != talker) {
ret = send_leave();
if (ret)
printf("send_leave failed\n");
}
#endif /* USE_MRPD */
if (2 > control_socket)
{
close(control_socket);
}
exit(EXIT_SUCCESS);
}
int main(int argc, char *argv[ ])
{
device_t igb_dev;
struct ifreq device;
int error;
struct sockaddr_ll ifsock_addr;
struct packet_mreq mreq;
int ifindex;
int socket_descriptor;
char *iface;
seventeen22_header *h1722;
long long int frame_sequence = 0;
unsigned char frame[MAX_FRAME_SIZE];
int size, length;
struct sched_param sched;
int rc;
if (argc < 2) {
fprintf(stderr, "Usage : %s <interface_name> <payload>\n",argv[0]);
return EINVAL;
}
signal(SIGINT, sigint_handler);
#if USE_MRPD
if (create_socket()) {
fprintf(stderr, "Socket creation failed.\n");
return errno;
}
rc = report_domain_status();
if (rc) {
printf("report_domain_status failed\n");
return EXIT_FAILURE;
}
fprintf(stdout,"Waiting for talker...\n");
await_talker();
rc = send_ready();
if (rc) {
printf("send_ready failed\n");
return EXIT_FAILURE;
}
#endif /* USE_MRPD */
iface = strdup(argv[1]);
error = pci_connect(&igb_dev);
if (error) {
fprintf(stderr, "connect failed (%s) - are you running as root?\n", strerror(errno));
return errno;
}
error = igb_init(&igb_dev);
if (error) {
fprintf(stderr, "init failed (%s) - is the driver really loaded?\n", strerror(errno));
return errno;
}
socket_descriptor = socket(AF_PACKET, SOCK_RAW, htons(ETHER_TYPE_AVTP));
if (socket_descriptor < 0) {
fprintf(stderr, "failed to open socket: %s \n", strerror(errno));
return EINVAL;
}
memset(&device, 0, sizeof(device));
memcpy(device.ifr_name, iface, IFNAMSIZ);
error = ioctl(socket_descriptor, SIOCGIFINDEX, &device);
if (error < 0) {
fprintf(stderr, "Failed to get index of iface %s: %s\n", iface, strerror(errno));
return EINVAL;
}
ifindex = device.ifr_ifindex;
memset(&ifsock_addr, 0, sizeof(ifsock_addr));
ifsock_addr.sll_family = AF_PACKET;
ifsock_addr.sll_ifindex = ifindex;
ifsock_addr.sll_protocol = htons(ETHER_TYPE_AVTP);
error = bind(socket_descriptor, (struct sockaddr *) & ifsock_addr, sizeof(ifsock_addr));
if (error < 0) {
fprintf(stderr, "Failed to bind: %s\n", strerror(errno));
return EINVAL;
}
memset(&mreq, 0, sizeof(mreq));
mreq.mr_ifindex = ifindex;
mreq.mr_type = PACKET_MR_MULTICAST;
mreq.mr_alen = 6;
memcpy(mreq.mr_address, glob_dest_addr, mreq.mr_alen);
error = setsockopt(socket_descriptor, SOL_PACKET, PACKET_ADD_MEMBERSHIP, &mreq, sizeof(mreq));
if (error < 0) {
fprintf(stderr, "Failed to add multi-cast addresses to port: %u\n", ifindex);
return EINVAL;
}
size = sizeof(ifsock_addr);
frame_sequence = 0;
memset(frame, 0, sizeof(frame));
memset(&sched, 0, sizeof sched);
sched.sched_priority = 1;
error = sched_setscheduler(0, SCHED_RR, &sched);
if (error < 0)
fprintf(stderr, "Failed to select RR scheduler: %s (%d)\n",
strerror(errno), errno);
while (1) {
error = recvfrom(socket_descriptor, frame, MAX_FRAME_SIZE, 0, (struct sockaddr *) &ifsock_addr, (socklen_t *)&size);
if (error > 0) {
fprintf(stderr,"frame sequence = %lld\n", frame_sequence++);
h1722 = (seventeen22_header *)((uint8_t*)frame + sizeof(eth_header));
length = ntohs(h1722->length) - sizeof(six1883_header);
write(1, (uint8_t *)((uint8_t*)frame + sizeof(eth_header) + sizeof(seventeen22_header) +
sizeof(six1883_header)), length);
} else {
fprintf(stderr,"recvfrom() error for frame sequence = %lld\n", frame_sequence++);
}
}
usleep(100);
close(socket_descriptor);
return EXIT_SUCCESS;
}
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