void
ccnl_interface_enqueue(void (tx_done)(void*, int, int), struct ccnl_face_s *f,
struct ccnl_relay_s *ccnl, struct ccnl_if_s *ifc,
struct ccnl_buf_s *buf, sockunion *dest)
{
struct ccnl_txrequest_s *r;
DEBUGMSG_CORE(TRACE, "enqueue interface=%p buf=%p len=%d (qlen=%d)\n",
(void*)ifc, (void*)buf,
buf ? buf->datalen : -1, ifc ? ifc->qlen : -1);
if (ifc->qlen >= CCNL_MAX_IF_QLEN) {
DEBUGMSG_CORE(WARNING, " DROPPING buf=%p\n", (void*)buf);
ccnl_free(buf);
return;
}
r = ifc->queue + ((ifc->qfront + ifc->qlen) % CCNL_MAX_IF_QLEN);
r->buf = buf;
memcpy(&r->dst, dest, sizeof(sockunion));
r->txdone = tx_done;
r->txdone_face = f;
ifc->qlen++;
#ifdef USE_SCHEDULER
ccnl_sched_RTS(ifc->sched, 1, buf->datalen, ccnl, ifc);
#else
ccnl_interface_CTS(ccnl, ifc);
#endif
}
void
ccnl_io_loop(struct ccnl_relay_s *ccnl)
{
int i, maxfd = -1, rc;
fd_set readfs, writefs;
if (ccnl->ifcount == 0) {
fprintf(stderr, "no socket to work with, not good, quitting\n");
exit(EXIT_FAILURE);
}
for (i = 0; i < ccnl->ifcount; i++)
if (ccnl->ifs[i].sock > maxfd)
maxfd = ccnl->ifs[i].sock;
maxfd++;
FD_ZERO(&readfs);
FD_ZERO(&writefs);
while(!ccnl->halt_flag) {
struct timeval *timeout;
for (i = 0; i < ccnl->ifcount; i++) {
FD_SET(ccnl->ifs[i].sock, &readfs);
if (ccnl->ifs[i].qlen > 0)
FD_SET(ccnl->ifs[i].sock, &writefs);
else
FD_CLR(ccnl->ifs[i].sock, &writefs);
}
timeout = ccnl_run_events();
rc = select(maxfd, &readfs, &writefs, NULL, timeout);
if (rc < 0) {
perror("select(): ");
exit(EXIT_FAILURE);
}
for (i = 0; i < ccnl->ifcount; i++) {
if (FD_ISSET(ccnl->ifs[i].sock, &readfs)) {
sockunion src_addr;
socklen_t addrlen = sizeof(sockunion);
unsigned char buf[CCNL_MAX_PACKET_SIZE];
int len;
if ((len = recvfrom(ccnl->ifs[i].sock, buf, sizeof(buf), 0,
(struct sockaddr*) &src_addr, &addrlen)) > 0)
ccnl_core_RX(ccnl, i, buf, len, &src_addr.sa, sizeof(src_addr.ip4));
}
if (FD_ISSET(ccnl->ifs[i].sock, &writefs))
ccnl_interface_CTS(&theRelay, &theRelay.ifs[0]);
}
}
}
void ccnl_interface_enqueue(void (tx_done)(void *, int, int),
struct ccnl_face_s *f, struct ccnl_relay_s *ccnl, struct ccnl_if_s *ifc,
struct ccnl_buf_s *buf, sockunion *dest)
{
struct ccnl_txrequest_s *r;
DEBUGMSG(25, "ccnl_interface_enqueue interface=%p buf=%p (qlen=%d)\n",
(void *) ifc, (void *) buf, ifc->qlen);
if (ifc->qlen >= CCNL_MAX_IF_QLEN) {
DEBUGMSG(2, " DROPPING buf=%p\n", (void *) buf);
ccnl_free(buf);
return;
}
r = ifc->queue + ((ifc->qfront + ifc->qlen) % CCNL_MAX_IF_QLEN);
r->buf = buf;
memcpy(&r->dst, dest, sizeof(sockunion));
r->txdone = tx_done;
r->txdone_face = f;
ifc->qlen++;
ccnl_interface_CTS(ccnl, ifc);
}
int
ccnl_io_loop(struct ccnl_relay_s *ccnl)
{
int i, maxfd = -1, rc;
fd_set readfs, writefs;
unsigned char buf[CCNL_MAX_PACKET_SIZE];
int len;
if (ccnl->ifcount == 0) {
fprintf(stderr, "no socket to work with, not good, quitting\n");
exit(EXIT_FAILURE);
}
for (i = 0; i < ccnl->ifcount; i++)
if (ccnl->ifs[i].sock > maxfd)
maxfd = ccnl->ifs[i].sock;
maxfd++;
DEBUGMSG(1, "starting main event and IO loop\n");
while(!ccnl->halt_flag) {
struct timeval *timeout;
FD_ZERO(&readfs);
FD_ZERO(&writefs);
#ifdef USE_HTTP_STATUS
ccnl_http_anteselect(ccnl, ccnl->http, &readfs, &writefs, &maxfd);
#endif
for (i = 0; i < ccnl->ifcount; i++) {
FD_SET(ccnl->ifs[i].sock, &readfs);
if (ccnl->ifs[i].qlen > 0)
FD_SET(ccnl->ifs[i].sock, &writefs);
}
timeout = ccnl_run_events();
rc = select(maxfd, &readfs, &writefs, NULL, timeout);
if (rc < 0) {
perror("select(): ");
exit(EXIT_FAILURE);
}
#ifdef USE_HTTP_STATUS
ccnl_http_postselect(ccnl, ccnl->http, &readfs, &writefs);
#endif
for (i = 0; i < ccnl->ifcount; i++) {
if (FD_ISSET(ccnl->ifs[i].sock, &readfs)) {
sockunion src_addr;
socklen_t addrlen = sizeof(sockunion);
if ((len = recvfrom(ccnl->ifs[i].sock, buf, sizeof(buf), 0,
(struct sockaddr*) &src_addr, &addrlen)) > 0) {
if (src_addr.sa.sa_family == AF_INET) {
ccnl_core_RX(ccnl, i, buf, len,
&src_addr.sa, sizeof(src_addr.ip4));
}
#ifdef USE_ETHERNET
else if (src_addr.sa.sa_family == AF_PACKET) {
if (len > 14)
ccnl_core_RX(ccnl, i, buf+14, len-14,
&src_addr.sa, sizeof(src_addr.eth));
}
#endif
#ifdef USE_UNIXSOCKET
else if (src_addr.sa.sa_family == AF_UNIX) {
ccnl_core_RX(ccnl, i, buf, len,
&src_addr.sa, sizeof(src_addr.ux));
}
#endif
}
}
if (FD_ISSET(ccnl->ifs[i].sock, &writefs)) {
ccnl_interface_CTS(ccnl, ccnl->ifs + i);
}
}
}
return 0;
}
