/*
* Send request on all interfaces for information from other routers
* at startup time.
*/
void
send_request(void)
{
struct interface *ifp;
struct msghdr *mh;
struct rip6 *pkt;
struct route_entry *rp;
struct sockaddr_in6 sdst;
int n;
if (snd_data == NULL)
return;
pkt = (struct rip6 *)snd_data;
bzero((void *)pkt, sizeof(struct rip6));
pkt->rip6_cmd = RIP6_REQUEST;
pkt->rip6_ver = RIP6_VERSION;
rp = pkt->rip6_rte;
rp->rip6_metric = HOPCOUNT_INFINITY;
mh = &smsgh; /* used in send_request/send_update */
(void)inet_pton(AF_INET6, ALL_RIP6_ROUTER, (void *)&sdst.sin6_addr);
mh->msg_name = (char *)&(sdst);
sdst.sin6_len = mh->msg_namelen = sizeof(struct sockaddr_in6);
mh->msg_iov = &siov;
mh->msg_iovlen = 1;
siov.iov_base = snd_data;
siov.iov_len = sizeof(struct rip6);
sdst.sin6_family = AF_INET6;
sdst.sin6_port = htons(RIP6_PORT);
sdst.sin6_flowinfo = 0;
for (ifp = ifnet; ifp; ifp = ifp->if_next) {
if ((ifp->if_flag & IFF_UP) == 0 ||
(ifp->if_flag & IFF_LOOPBACK) ||
(ifp->if_flag & IFF_RUNNING) == 0)
continue;
if (ifp->if_config->int_inpass == CTL_NOLISTEN &&
ifp->if_config->int_ctlin == NULL)
continue;
mh->msg_control = (char *)&(ifp->if_cinfo);
mh->msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo));
if (rt6_trace)
trace_packet("Tx", ifp, mh, 1, 0);
if ((n = sendmsg(rip6_sock, mh, 0)) < 0)
syslog(LOG_ERR, "send_request: send_request: UDP socket: %m");
}
return;
}
void Raytracer::trace_packet_worker(tsqueue<PacketRegion> *packet_queue, unsigned char *buffer)
{
while (true)
{
bool empty;
PacketRegion packet = packet_queue->Pop(empty);
if (empty)
{
break;
}
trace_packet(packet, 1.0, buffer);
}
}
/*
* Writes the message on to UDP socket to appropriate destinations.
*/
void
send_message(struct msghdr *mh, struct interface *ifp, unsigned int force)
{
int n, nentries, flag;
struct control *ctlp;
flag = 0;
nentries = (mh->msg_iov->iov_len - sizeof(struct rip6))
/ sizeof(struct route_entry) + 1;
if (mh->msg_name != NULL) { /* should respond by unicast */
struct in6_pktinfo *pf;
/* query(all), query(n), startup-query(all) */
/* send back to the sender of request directly */
/* Its src addr is response's dst addr */
/* mh->msg_name = mh->msg_name; */
pf = (struct in6_pktinfo *)CMSG_DATA(CMSG_FIRSTHDR(mh));
if (IN6_IS_ADDR_MULTICAST(&pf->ipi6_addr)) {
if (ifp->if_lladdr)
pf->ipi6_addr = ifp->if_lladdr->pl_pref.prf_addr;
else
return; /* cannot send without linklocal */
}
if (rt6_trace)
trace_packet("Tx", ifp, mh, nentries, 0);
if ((n = sendmsg(rip6_sock, mh, 0)) != mh->msg_iov->iov_len)
syslog(LOG_ERR, "send_message: UDP socket: %m");
return;
}
if (!(ifp->if_flag & IFF_RUNNING))
return; /* doesn't have any linklocal */
mh->msg_control = (void *)&(ifp->if_cinfo);
mh->msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo));
/* SPECIAL CASE */
/* AGGREGATE overrides NOOUT */
if (force) {
struct sockaddr_in6 tmp6;
bzero((void *)&tmp6, sizeof(tmp6));
tmp6.sin6_port = htons(RIP6_PORT);
tmp6.sin6_len = sizeof(tmp6);
tmp6.sin6_family = AF_INET6;
tmp6.sin6_flowinfo = 0;
(void)inet_pton(AF_INET6, ALL_RIP6_ROUTER, &tmp6.sin6_addr);
mh->msg_name = (char *)&tmp6;
mh->msg_namelen = sizeof(tmp6);
if (rt6_trace)
trace_packet("Tx", ifp, mh, (nentries + 1), 0);
if ((n = sendmsg(rip6_sock, mh, MSG_DONTROUTE)) != mh->msg_iov->iov_len)
syslog(LOG_ERR, "send_message: UDP socket: %m");
ifp->if_updates++;
return;
}
/*
* Loop through all the destinations listed in out list with
* CTL_SEND of this interface and send a copy to them each.
* Note: there should be a CTL_SEND to FF02::9 entry in
* default.
*/
for (ctlp = ifp->if_config->int_ctlout; ctlp; ctlp = ctlp->ctl_next) {
if (ctlp->ctl_pass == CTL_NOSEND)
continue;
mh->msg_name = (char *)&(ctlp->ctl_addr);
mh->msg_namelen = sizeof(struct sockaddr_in6);
if (rt6_trace)
trace_packet("Tx", ifp, mh, (nentries + 1), 0);
n = sendmsg(rip6_sock, mh, MSG_DONTROUTE);
if (n != mh->msg_iov->iov_len)
syslog(LOG_ERR, "send_message: UDP socket: %m");
ifp->if_updates++;
}
return;
}
