diff options
Diffstat (limited to 'usr.sbin/IPXrouted/sap_output.c')
| -rw-r--r-- | usr.sbin/IPXrouted/sap_output.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/usr.sbin/IPXrouted/sap_output.c b/usr.sbin/IPXrouted/sap_output.c deleted file mode 100644 index d1f1a28..0000000 --- a/usr.sbin/IPXrouted/sap_output.c +++ /dev/null @@ -1,198 +0,0 @@ -/* - * Copyright (c) 1995 John Hay. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by John Hay. - * 4. Neither the name of the author nor the names of any co-contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY John Hay AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL John Hay OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - -/* - * Routing Table Management Daemon - */ -#include <unistd.h> -#include "defs.h" - -/* - * Apply the function "f" to all non-passive - * interfaces. If the interface supports the - * use of broadcasting use it, otherwise address - * the output to the known router. - */ -void -sap_supply_toall(changesonly) - int changesonly; -{ - register struct interface *ifp; - struct sockaddr dst; - register struct sockaddr_ipx *ipx_dst; - register int flags; - extern struct interface *ifnet; - - ipx_dst = (struct sockaddr_ipx *)&dst; - - for (ifp = ifnet; ifp; ifp = ifp->int_next) { - if (ifp->int_flags & IFF_PASSIVE) - continue; - - dst = ifp->int_flags & IFF_BROADCAST ? ifp->int_broadaddr : - ifp->int_flags & IFF_POINTOPOINT ? ifp->int_dstaddr : - ifp->int_addr; - - ipx_dst->sipx_addr.x_port = htons(IPXPORT_SAP); - - flags = ifp->int_flags & IFF_INTERFACE ? MSG_DONTROUTE : 0; - sap_supply(&dst, flags, ifp, SAP_WILDCARD, changesonly); - } -} - -void -sapsndmsg(dst, flags, ifp, changesonly) - struct sockaddr *dst; - int flags; - struct interface *ifp; - int changesonly; -{ - struct sockaddr t_dst; - struct sockaddr_ipx *ipx_dst; - - t_dst = *dst; - ipx_dst = (struct sockaddr_ipx *)&t_dst; - - if (ipx_dst->sipx_addr.x_port == 0) - ipx_dst->sipx_addr.x_port = htons(IPXPORT_SAP); - - (*afswitch[dst->sa_family].af_output) - (sapsock, flags, &t_dst, - sizeof (struct sap_packet) + sizeof(u_short)); - TRACE_SAP_OUTPUT(ifp, &t_dst, - sizeof (struct sap_packet) + sizeof(u_short)); -} - -/* - * Supply dst with the contents of the SAP tables. If the ServType == - * SAP_WILDCARD (0xFFFF) supply the whole table, otherwise only the - * services that are of ServType. If this won't fit in one packet, chop - * it up into several. - * - * This must be done using the split horizon algorithm. - * 1. Don't send SAP info to the interface from where it was received. - * 2. If a service is received from more than one interface and the cost is - * the same, don't publish it on either interface. I am calling this - * clones. - */ -void -sap_supply(dst, flags, ifp, ServType, changesonly) - struct sockaddr *dst; - int flags; - struct interface *ifp; - int ServType; - int changesonly; -{ - register struct sap_entry *sap; - register struct sap_entry *csap; /* Clone route */ - register struct sap_hash *sh; - register struct sap_info *n = sap_msg->sap; - struct sap_hash *base = sap_head; - struct sockaddr_ipx *sipx = (struct sockaddr_ipx *) dst; - af_output_t *output = afswitch[dst->sa_family].af_output; - int size, metric; - int delay = 0; - - if (sipx->sipx_port == 0) - sipx->sipx_port = htons(IPXPORT_SAP); - - sap_msg->sap_cmd = ntohs(SAP_RESP); - - for (sh = base; sh < &base[SAPHASHSIZ]; sh++) - for (sap = sh->forw; sap != (struct sap_entry *)sh; sap = sap->forw) { - size = (char *)n - (char *)sap_msg; - if (size >= ((MAXSAPENTRIES * sizeof (struct sap_info)) + - sizeof (sap_msg->sap_cmd))) { - (*output)(sapsock, flags, dst, size); - TRACE_SAP_OUTPUT(ifp, dst, size); - n = sap_msg->sap; - delay++; - if(delay == 2) { - usleep(50000); - delay = 0; - } - } - - if (changesonly && !(sap->state & RTS_CHANGED)) - continue; - - /* - * Check for the servicetype except if the ServType is - * a wildcard (0xFFFF). - */ - if ((ServType != SAP_WILDCARD) && - (ServType != sap->sap.ServType)) - continue; - - /* - * This should do rule one and two of the split horizon - * algorithm. - */ - if (sap->ifp == ifp) - continue; - - /* - * Rule 2. - * Look if we have clones (different routes to the same - * place with exactly the same cost). - * - * We should not publish on any of the clone interfaces. - */ - csap = sap->clone; - while (csap) { - if (csap->ifp == ifp) - goto next; - csap = csap->clone; - } - - /* - * Don't advertise services with more than 15 hops. It - * will be confused with a service that has gone down. - */ - if (ntohs(sap->sap.hops) == (HOPCNT_INFINITY - 1)) - continue; - metric = min(ntohs(sap->sap.hops) + 1, HOPCNT_INFINITY); - - *n = sap->sap; - n->hops = htons(metric); - n++; -next: - ; - } - if (n != sap_msg->sap) { - size = (char *)n - (char *)sap_msg; - (*output)(sapsock, flags, dst, size); - TRACE_SAP_OUTPUT(ifp, dst, size); - } -} - |
