void nl_init(void)
{
int status;
nlsock = socket(PF_NETLINK, SOCK_RAW, NETLINK_AODV);
if (nlsock < 0) {
perror("Unable to create netlink socket");
exit(-1);
}
rtnlsock = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
if (rtnlsock < 0) {
perror("Unable to create netlink socket");
exit(-1);
}
memset(&local, 0, sizeof(struct sockaddr_nl));
local.nl_family = AF_NETLINK;
local.nl_pid = getpid();
local.nl_groups = AODVGRP_NOTIFY;
memset(&peer, 0, sizeof(struct sockaddr_nl));
peer.nl_family = AF_NETLINK;
peer.nl_pid = 0;
peer.nl_groups = 0;
status = bind(nlsock, (struct sockaddr *)&local, sizeof(local));
if (status == -1) {
perror("Bind failed");
exit(-1);
}
local.nl_groups = RTMGRP_NOTIFY | RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE;
status = bind(rtnlsock, (struct sockaddr *)&local, sizeof(local));
if (status == -1) {
perror("Bind failed");
exit(-1);
}
if (attach_callback_func(nlsock, nl_callback) < 0) {
alog(LOG_ERR, 0, __FUNCTION__, "Could not attach callback.");
}
if (attach_callback_func(rtnlsock, nl_callback) < 0) {
alog(LOG_ERR, 0, __FUNCTION__, "Could not attach callback.");
}
}
void llf_init()
{
if (llf_rtnl_open(&rth, RTMGRP_LINK) < 0) {
DEBUG(LOG_ERR, 0, "Can't initialize rtnetlink socket");
return;
}
if (attach_callback_func(rth.fd, llf_callback) < 0) {
alog(LOG_ERR, 0, __FUNCTION__, "Could not attach callback");
return;
}
}
void NS_CLASS packet_input_init()
{
#ifndef NS_PORT
int status;
int bufsize = 0;
int optlen = sizeof(int);
h = ipq_create_handle(0);
if (h == NULL) {
fprintf(stderr, "Initialization failed!\n");
exit(1);
}
status = ipq_set_mode(h, IPQ_COPY_PACKET, BUFSIZE);
if (status < 0) {
die(h);
}
bufsize = 65535 *4;
status = setsockopt(h->fd, SOL_SOCKET, SO_RCVBUF,
(char *) &bufsize, sizeof(int));
if (status != 0) {
DEBUG(LOG_WARNING, 0, "Could not set netlink buffer size");
}
status = getsockopt(h->fd, SOL_SOCKET, SO_RCVBUF,
(char *) &bufsize, &optlen);
if (status == 0) {
DEBUG(LOG_DEBUG, 0, "Netlink socket buffer is %d", bufsize);
}
if (attach_callback_func(h->fd, packet_input) < 0) {
alog(LOG_ERR, 0, __FUNCTION__, "Could not attach callback.");
}
#endif /* NS_PORT */
}
void NS_CLASS packet_input_init()
{
#ifndef NS_PORT
int status;
h = ipq_create_handle(0);
if (h == NULL) {
fprintf(stderr, "Initialization failed!\n");
exit(1);
}
/* Copy 100 bytes of payload: ip header 60 bytes + max 20 bytes
Transport Layer header (TCP) + 20 extra bytes just to be
sure.... */
status = ipq_set_mode(h, IPQ_COPY_PACKET, BUFSIZE);
if (status < 0) {
die(h);
}
if (attach_callback_func(h->fd, packet_input) < 0) {
log(LOG_ERR, 0, "packet_input_init:");
}
#endif /* NS_PORT */
}
void NS_CLASS aodv_socket_init()
{
#ifndef NS_PORT
struct sockaddr_in aodv_addr;
struct ifreq ifr;
int i, retval = 0;
int on = 1;
int tos = IPTOS_LOWDELAY;
int bufsize = SO_RECVBUF_SIZE;
/* Create a UDP socket */
if (this_host.nif == 0) {
fprintf(stderr, "No interfaces configured\n");
exit(-1);
}
/* Open a socket for every AODV enabled interface */
for (i = 0; i < MAX_NR_INTERFACES; i++) {
if (!DEV_NR(i).enabled)
continue;
#ifdef RAW_SOCKET
DEV_NR(i).sock = socket(PF_INET, SOCK_RAW, IPPROTO_UDP);
#else
DEV_NR(i).sock = socket(PF_INET, SOCK_DGRAM, 0);
#endif
if (DEV_NR(i).sock < 0) {
perror("");
exit(-1);
}
/* Bind the socket to the AODV port number */
memset(&aodv_addr, 0, sizeof(aodv_addr));
aodv_addr.sin_family = AF_INET;
aodv_addr.sin_port = htons(AODV_PORT);
aodv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
retval = bind(DEV_NR(i).sock, (struct sockaddr *) &aodv_addr,
sizeof(struct sockaddr));
if (retval < 0) {
perror("Bind failed ");
exit(-1);
}
if (setsockopt(DEV_NR(i).sock, SOL_SOCKET, SO_BROADCAST,
&on, sizeof(int)) < 0) {
perror("SO_BROADCAST failed ");
exit(-1);
}
memset(&ifr, 0, sizeof(struct ifreq));
strcpy(ifr.ifr_name, DEV_NR(i).ifname);
if (setsockopt(DEV_NR(i).sock, SOL_SOCKET, SO_BINDTODEVICE,
&ifr, sizeof(ifr)) < 0) {
fprintf(stderr, "SO_BINDTODEVICE failed for %s", DEV_NR(i).ifname);
perror(" ");
exit(-1);
}
if (setsockopt(DEV_NR(i).sock, SOL_SOCKET, SO_PRIORITY,
&tos, sizeof(int)) < 0) {
perror("Setsockopt SO_PRIORITY failed ");
exit(-1);
}
#ifdef RAW_SOCKET
/* We provide our own IP header... */
if (setsockopt(DEV_NR(i).sock, SOL_IP, IP_HDRINCL,
&on, sizeof(int)) < 0) {
perror("Setsockopt IP_HDRINCL failed ");
exit(-1);
}
#else
if (setsockopt(DEV_NR(i).sock, SOL_IP, IP_PKTINFO,
&on, sizeof(int)) < 0) {
perror("Setsockopt IP_PKTINFO failed ");
exit(-1);
}
if (setsockopt(DEV_NR(i).sock, SOL_IP, IP_RECVTTL,
&on, sizeof(int)) < 0) {
perror("Setsockopt IP_TTL failed ");
exit(-1);
}
#endif
/* Set max allowable receive buffer size... */
for (;; bufsize -= 1024) {
if (setsockopt(DEV_NR(i).sock, SOL_SOCKET, SO_RCVBUF,
(char *) &bufsize, sizeof(bufsize)) == 0) {
log(LOG_NOTICE, 0, __FUNCTION__,
"Receive buffer size set to %d", bufsize);
break;
}
if (bufsize < RECV_BUF_SIZE) {
log(LOG_ERR, 0, __FUNCTION__,
"Could not set receive buffer size");
exit(-1);
}
}
retval = attach_callback_func(DEV_NR(i).sock, aodv_socket_read);
if (retval < 0) {
perror("register input handler failed ");
exit(-1);
}
}
#endif /* NS_PORT */
time_last_rreq.tv_sec = 0;
time_last_rreq.tv_usec = 0;
time_last_rerr.tv_sec = 0;
time_last_rerr.tv_usec = 0;
/* gettimeofday(&time_last_rerr, NULL); */
num_rreq = 0;
num_rerr = 0;
}