int
ccnl_eth_sendto(int sock, unsigned char *dst, unsigned char *src,
unsigned char *data, int datalen)
{
short type = htons(CCNL_ETH_TYPE);
unsigned char buf[2000];
int hdrlen;
strcpy((char*)buf, eth2ascii(dst));
DEBUGMSG(99, "ccnl_eth_sendto %d bytes (src=%s, dst=%s)\n",
datalen, eth2ascii(src), buf);
hdrlen = 14;
if ((datalen+hdrlen) > sizeof(buf))
datalen = sizeof(buf) - hdrlen;
memcpy(buf, dst, 6);
memcpy(buf+6, src, 6);
memcpy(buf+12, &type, sizeof(type));
memcpy(buf+hdrlen, data, datalen);
return sendto(sock, buf, hdrlen + datalen, 0, 0, 0);
}
void
ccnl_simu_ethernet(void *dummy, void *dummy2)
{
if (etherqueue) {
int i, qlen;
struct ccnl_ethernet_s **pp, *p;
// pick the last element in the queue
for (qlen = 1, pp = ðerqueue; (*pp)->next; pp = &((*pp)->next))
qlen++;
p = *pp;
*pp = NULL;
for (i = 0; i < 5; i++) {
if (!memcmp(p->dst, &relays[i].ifs[0].addr.eth.sll_addr, ETH_ALEN)) {
break;
}
}
if (i < 5) {
sockunion sun;
sun.sa.sa_family = AF_PACKET;
memcpy(sun.eth.sll_addr, p->src, ETH_ALEN);
DEBUGMSG(DEBUG, "simu_ethernet: sending %d Bytes to %s, (qlen=%d)\n",
p->len, eth2ascii(p->dst), qlen);
ccnl_core_RX(relays + i, 0, (unsigned char*) p->data,
p->len, &sun.sa, sizeof(sun.eth));
} else {
DEBUGMSG(WARNING, "simu_ethernet: dest %s not found\n",
eth2ascii(etherqueue->dst));
}
ccnl_free(p);
}
ccnl_set_timer(2000, ccnl_simu_ethernet, dummy, dummy2);
}
void
ccnl_ll_TX(struct ccnl_relay_s *ccnl, struct ccnl_if_s *ifc,
sockunion *dest, struct ccnl_buf_s *buf)
{
int rc;
switch(dest->sa.sa_family) {
#ifdef USE_IPV4
case AF_INET:
rc = sendto(ifc->sock,
buf->data, buf->datalen, 0,
(struct sockaddr*) &dest->ip4, sizeof(struct sockaddr_in));
DEBUGMSG(DEBUG, "udp sendto %s/%d returned %d\n",
inet_ntoa(dest->ip4.sin_addr), ntohs(dest->ip4.sin_port), rc);
/*
{
int fd = open("t.bin", O_WRONLY | O_CREAT | O_TRUNC);
write(fd, buf->data, buf->datalen);
close(fd);
}
*/
break;
#endif
#ifdef USE_ETHERNET
case AF_PACKET:
rc = ccnl_eth_sendto(ifc->sock,
dest->eth.sll_addr,
ifc->addr.eth.sll_addr,
buf->data, buf->datalen);
DEBUGMSG(DEBUG, "eth_sendto %s returned %d\n",
eth2ascii(dest->eth.sll_addr), rc);
break;
#endif
#ifdef USE_UNIXSOCKET
case AF_UNIX:
rc = sendto(ifc->sock,
buf->data, buf->datalen, 0,
(struct sockaddr*) &dest->ux, sizeof(struct sockaddr_un));
DEBUGMSG(DEBUG, "unix sendto %s returned %d\n",
dest->ux.sun_path, rc);
break;
#endif
default:
DEBUGMSG(WARNING, "unknown transport\n");
break;
}
(void) rc; // just to silence a compiler warning (if USE_DEBUG is not set)
}
void
ccnl_ll_TX(struct ccnl_relay_s *ccnl, struct ccnl_if_s *ifc,
sockunion *dest, struct ccnl_buf_s *buf)
{
int rc;
switch(dest->sa.sa_family) {
case AF_INET:
rc = sendto(ifc->sock,
buf->data, buf->datalen, 0,
(struct sockaddr*) &dest->ip4, sizeof(struct sockaddr_in));
DEBUGMSG(99, "udp sendto %s/%d returned %d\n",
inet_ntoa(dest->ip4.sin_addr), ntohs(dest->ip4.sin_port), rc);
break;
#ifdef USE_ETHERNET
case AF_PACKET:
rc = ccnl_eth_sendto(ifc->sock,
dest->eth.sll_addr,
ifc->addr.eth.sll_addr,
buf->data, buf->datalen);
DEBUGMSG(99, "eth_sendto %s returned %d\n",
eth2ascii(dest->eth.sll_addr), rc);
break;
#endif
#ifdef USE_UNIXSOCKET
case AF_UNIX:
rc = sendto(ifc->sock,
buf->data, buf->datalen, 0,
(struct sockaddr*) &dest->ux, sizeof(struct sockaddr_un));
DEBUGMSG(99, "unix sendto %s returned %d\n",
dest->ux.sun_path, rc);
break;
#endif
default:
DEBUGMSG(99, "unknown transport\n");
break;
}
rc = 0; // just to silence a compiler warning (if USE_DEBUG is not set)
}
