[mirror_frr.git] / pimd / pim_static.c

/*
 * PIM for Quagga: add the ability to configure multicast static routes
 * Copyright (C) 2014  Nathan Bahr, ATCorp
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; see the file COPYING; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <zebra.h>

#include "vty.h"
#include "if.h"
#include "log.h"
#include "memory.h"
#include "linklist.h"

#include "pimd.h"
#include "pim_oil.h"
#include "pim_static.h"
#include "pim_time.h"
#include "pim_str.h"
#include "pim_iface.h"

void pim_static_route_free(struct static_route *s_route)
{
	XFREE(MTYPE_PIM_STATIC_ROUTE, s_route);
}

static struct static_route *static_route_alloc()
{
	return XCALLOC(MTYPE_PIM_STATIC_ROUTE, sizeof(struct static_route));
}

static struct static_route *static_route_new(unsigned int iif, unsigned int oif,
					     struct in_addr group,
					     struct in_addr source)
{
	struct static_route *s_route;
	s_route = static_route_alloc();

	s_route->group = group;
	s_route->source = source;
	s_route->iif = iif;
	s_route->oif_ttls[oif] = 1;
	s_route->c_oil.oil_ref_count = 1;
	s_route->c_oil.oil.mfcc_origin = source;
	s_route->c_oil.oil.mfcc_mcastgrp = group;
	s_route->c_oil.oil.mfcc_parent = iif;
	s_route->c_oil.oil.mfcc_ttls[oif] = 1;
	s_route->c_oil.oif_creation[oif] = pim_time_monotonic_sec();

	return s_route;
}


int pim_static_add(struct pim_instance *pim, struct interface *iif,
		   struct interface *oif, struct in_addr group,
		   struct in_addr source)
{
	struct listnode *node = NULL;
	struct static_route *s_route = NULL;
	struct static_route *original_s_route = NULL;
	struct pim_interface *pim_iif = iif ? iif->info : NULL;
	struct pim_interface *pim_oif = oif ? oif->info : NULL;
	ifindex_t iif_index = pim_iif ? pim_iif->mroute_vif_index : 0;
	ifindex_t oif_index = pim_oif ? pim_oif->mroute_vif_index : 0;

	if (!iif_index || !oif_index) {
		zlog_warn(
			"%s %s: Unable to add static route: Invalid interface index(iif=%d,oif=%d)",
			__FILE__, __PRETTY_FUNCTION__, iif_index, oif_index);
		return -2;
	}

#ifdef PIM_ENFORCE_LOOPFREE_MFC
	if (iif_index == oif_index) {
		/* looped MFC entry */
		zlog_warn(
			"%s %s: Unable to add static route: Looped MFC entry(iif=%d,oif=%d)",
			__FILE__, __PRETTY_FUNCTION__, iif_index, oif_index);
		return -4;
	}
#endif
	if (iif->vrf_id != oif->vrf_id) {
		return -3;
	}

	for (ALL_LIST_ELEMENTS_RO(pim->static_routes, node, s_route)) {
		if (s_route->group.s_addr == group.s_addr
		    && s_route->source.s_addr == source.s_addr) {
			if (s_route->iif == iif_index
			    && s_route->oif_ttls[oif_index]) {
				char gifaddr_str[INET_ADDRSTRLEN];
				char sifaddr_str[INET_ADDRSTRLEN];
				pim_inet4_dump("<ifaddr?>", group, gifaddr_str,
					       sizeof(gifaddr_str));
				pim_inet4_dump("<ifaddr?>", source, sifaddr_str,
					       sizeof(sifaddr_str));
				zlog_warn(
					"%s %s: Unable to add static route: Route already exists (iif=%d,oif=%d,group=%s,source=%s)",
					__FILE__, __PRETTY_FUNCTION__,
					iif_index, oif_index, gifaddr_str,
					sifaddr_str);
				return -3;
			}

			/* Ok, from here on out we will be making changes to the
			 * s_route structure, but if
			 * for some reason we fail to commit these changes to
			 * the kernel, we want to be able
			 * restore the state of the list. So copy the node data
			 * and if need be, we can copy
			 * back if it fails.
			 */
			original_s_route = static_route_alloc();
			if (!original_s_route) {
				return -5;
			}
			memcpy(original_s_route, s_route,
			       sizeof(struct static_route));

			/* Route exists and has the same input interface, but
			 * adding a new output interface */
			if (s_route->iif == iif_index) {
				s_route->oif_ttls[oif_index] = 1;
				s_route->c_oil.oil.mfcc_ttls[oif_index] = 1;
				s_route->c_oil.oif_creation[oif_index] =
					pim_time_monotonic_sec();
				++s_route->c_oil.oil_ref_count;
			} else {
				/* input interface changed */
				s_route->iif = iif_index;
				s_route->c_oil.oil.mfcc_parent = iif_index;

#ifdef PIM_ENFORCE_LOOPFREE_MFC
				/* check to make sure the new input was not an
				 * old output */
				if (s_route->oif_ttls[iif_index]) {
					s_route->oif_ttls[iif_index] = 0;
					s_route->c_oil.oif_creation[iif_index] =
						0;
					s_route->c_oil.oil
						.mfcc_ttls[iif_index] = 0;
					--s_route->c_oil.oil_ref_count;
				}
#endif

				/* now add the new output, if it is new */
				if (!s_route->oif_ttls[oif_index]) {
					s_route->oif_ttls[oif_index] = 1;
					s_route->c_oil.oif_creation[oif_index] =
						pim_time_monotonic_sec();
					s_route->c_oil.oil
						.mfcc_ttls[oif_index] = 1;
					++s_route->c_oil.oil_ref_count;
				}
			}

			break;
		}
	}

	/* If node is null then we reached the end of the list without finding a
	 * match */
	if (!node) {
		s_route = static_route_new(iif_index, oif_index, group, source);
		listnode_add(pim->static_routes, s_route);
	}

	s_route->c_oil.pim = pim;

	if (pim_mroute_add(&s_route->c_oil, __PRETTY_FUNCTION__)) {
		char gifaddr_str[INET_ADDRSTRLEN];
		char sifaddr_str[INET_ADDRSTRLEN];
		pim_inet4_dump("<ifaddr?>", group, gifaddr_str,
			       sizeof(gifaddr_str));
		pim_inet4_dump("<ifaddr?>", source, sifaddr_str,
			       sizeof(sifaddr_str));
		zlog_warn(
			"%s %s: Unable to add static route(iif=%d,oif=%d,group=%s,source=%s)",
			__FILE__, __PRETTY_FUNCTION__, iif_index, oif_index,
			gifaddr_str, sifaddr_str);

		/* Need to put s_route back to the way it was */
		if (original_s_route) {
			memcpy(s_route, original_s_route,
			       sizeof(struct static_route));
		} else {
			/* we never stored off a copy, so it must have been a
			 * fresh new route */
			listnode_delete(pim->static_routes, s_route);
			pim_static_route_free(s_route);
		}

		if (original_s_route) {
			pim_static_route_free(original_s_route);
		}

		return -1;
	}

	/* Make sure we free the memory for the route copy if used */
	if (original_s_route) {
		pim_static_route_free(original_s_route);
	}

	if (PIM_DEBUG_STATIC) {
		char gifaddr_str[INET_ADDRSTRLEN];
		char sifaddr_str[INET_ADDRSTRLEN];
		pim_inet4_dump("<ifaddr?>", group, gifaddr_str,
			       sizeof(gifaddr_str));
		pim_inet4_dump("<ifaddr?>", source, sifaddr_str,
			       sizeof(sifaddr_str));
		zlog_debug(
			"%s: Static route added(iif=%d,oif=%d,group=%s,source=%s)",
			__PRETTY_FUNCTION__, iif_index, oif_index, gifaddr_str,
			sifaddr_str);
	}

	return 0;
}

int pim_static_del(struct pim_instance *pim, struct interface *iif,
		   struct interface *oif, struct in_addr group,
		   struct in_addr source)
{
	struct listnode *node = NULL;
	struct listnode *nextnode = NULL;
	struct static_route *s_route = NULL;
	struct pim_interface *pim_iif = iif ? iif->info : 0;
	struct pim_interface *pim_oif = oif ? oif->info : 0;
	ifindex_t iif_index = pim_iif ? pim_iif->mroute_vif_index : 0;
	ifindex_t oif_index = pim_oif ? pim_oif->mroute_vif_index : 0;

	if (!iif_index || !oif_index) {
		zlog_warn(
			"%s %s: Unable to remove static route: Invalid interface index(iif=%d,oif=%d)",
			__FILE__, __PRETTY_FUNCTION__, iif_index, oif_index);
		return -2;
	}

	for (ALL_LIST_ELEMENTS(pim->static_routes, node, nextnode, s_route)) {
		if (s_route->iif == iif_index
		    && s_route->group.s_addr == group.s_addr
		    && s_route->source.s_addr == source.s_addr
		    && s_route->oif_ttls[oif_index]) {
			s_route->oif_ttls[oif_index] = 0;
			s_route->c_oil.oil.mfcc_ttls[oif_index] = 0;
			--s_route->c_oil.oil_ref_count;

			/* If there are no more outputs then delete the whole
			 * route, otherwise set the route with the new outputs
			 */
			if (s_route->c_oil.oil_ref_count <= 0
				    ? pim_mroute_del(&s_route->c_oil,
						     __PRETTY_FUNCTION__)
				    : pim_mroute_add(&s_route->c_oil,
						     __PRETTY_FUNCTION__)) {
				char gifaddr_str[INET_ADDRSTRLEN];
				char sifaddr_str[INET_ADDRSTRLEN];
				pim_inet4_dump("<ifaddr?>", group, gifaddr_str,
					       sizeof(gifaddr_str));
				pim_inet4_dump("<ifaddr?>", source, sifaddr_str,
					       sizeof(sifaddr_str));
				zlog_warn(
					"%s %s: Unable to remove static route(iif=%d,oif=%d,group=%s,source=%s)",
					__FILE__, __PRETTY_FUNCTION__,
					iif_index, oif_index, gifaddr_str,
					sifaddr_str);

				s_route->oif_ttls[oif_index] = 1;
				s_route->c_oil.oil.mfcc_ttls[oif_index] = 1;
				++s_route->c_oil.oil_ref_count;

				return -1;
			}

			s_route->c_oil.oif_creation[oif_index] = 0;

			if (s_route->c_oil.oil_ref_count <= 0) {
				listnode_delete(pim->static_routes, s_route);
				pim_static_route_free(s_route);
			}

			if (PIM_DEBUG_STATIC) {
				char gifaddr_str[INET_ADDRSTRLEN];
				char sifaddr_str[INET_ADDRSTRLEN];
				pim_inet4_dump("<ifaddr?>", group, gifaddr_str,
					       sizeof(gifaddr_str));
				pim_inet4_dump("<ifaddr?>", source, sifaddr_str,
					       sizeof(sifaddr_str));
				zlog_debug(
					"%s: Static route removed(iif=%d,oif=%d,group=%s,source=%s)",
					__PRETTY_FUNCTION__, iif_index,
					oif_index, gifaddr_str, sifaddr_str);
			}

			break;
		}
	}

	if (!node) {
		char gifaddr_str[INET_ADDRSTRLEN];
		char sifaddr_str[INET_ADDRSTRLEN];
		pim_inet4_dump("<ifaddr?>", group, gifaddr_str,
			       sizeof(gifaddr_str));
		pim_inet4_dump("<ifaddr?>", source, sifaddr_str,
			       sizeof(sifaddr_str));
		zlog_warn(
			"%s %s: Unable to remove static route: Route does not exist(iif=%d,oif=%d,group=%s,source=%s)",
			__FILE__, __PRETTY_FUNCTION__, iif_index, oif_index,
			gifaddr_str, sifaddr_str);
		return -3;
	}

	return 0;
}

int pim_static_write_mroute(struct pim_instance *pim, struct vty *vty,
			    struct interface *ifp)
{
	struct pim_interface *pim_ifp = ifp->info;
	struct listnode *node;
	struct static_route *sroute;
	int count = 0;
	char sbuf[INET_ADDRSTRLEN];
	char gbuf[INET_ADDRSTRLEN];

	if (!pim_ifp)
		return 0;

	for (ALL_LIST_ELEMENTS_RO(pim->static_routes, node, sroute)) {
		pim_inet4_dump("<ifaddr?>", sroute->group, gbuf, sizeof(gbuf));
		pim_inet4_dump("<ifaddr?>", sroute->source, sbuf, sizeof(sbuf));
		if (sroute->iif == pim_ifp->mroute_vif_index) {
			int i;
			for (i = 0; i < MAXVIFS; i++)
				if (sroute->oif_ttls[i]) {
					struct interface *oifp =
						pim_if_find_by_vif_index(pim,
									 i);
					if (sroute->source.s_addr == 0)
						vty_out(vty,
							" ip mroute %s %s\n",
							oifp->name, gbuf);
					else
						vty_out(vty,
							" ip mroute %s %s %s\n",
							oifp->name, gbuf, sbuf);
					count++;
				}
		}
	}

	return count;
}
Commit	Line	Data
6250610a	1	/*
896014f4 DL	2	* PIM for Quagga: add the ability to configure multicast static routes
	3	* Copyright (C) 2014 Nathan Bahr, ATCorp
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; either version 2 of the License, or
	8	* (at your option) any later version.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License along
	16	* with this program; see the file COPYING; if not, write to the Free Software
	17	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	18	*/
6250610a	19
f91f89bc DS	20	#include <zebra.h>
	21
	22	#include "vty.h"
744d91b3	23	#include "if.h"
9867746a DS	24	#include "log.h"
	25	#include "memory.h"
	26	#include "linklist.h"
f91f89bc	27
9867746a DS	28	#include "pimd.h"
9867746a DS	29	#include "pim_oil.h"
6250610a JAG	30	#include "pim_static.h"
	31	#include "pim_time.h"
	32	#include "pim_str.h"
6250610a	33	#include "pim_iface.h"
6250610a JAG	34
	35	void pim_static_route_free(struct static_route *s_route)
	36	{
d62a17ae	37	XFREE(MTYPE_PIM_STATIC_ROUTE, s_route);
6250610a JAG	38	}
6250610a JAG	39
d62a17ae	40	static struct static_route *static_route_alloc()
6250610a	41	{
2b57b948	42	return XCALLOC(MTYPE_PIM_STATIC_ROUTE, sizeof(struct static_route));
6250610a JAG	43	}
6250610a JAG	44
d62a17ae	45	static struct static_route *static_route_new(unsigned int iif, unsigned int oif,
	46	struct in_addr group,
	47	struct in_addr source)
6250610a	48	{
d62a17ae	49	struct static_route *s_route;
d62a17ae	50	s_route = static_route_alloc();
d62a17ae	51
	52	s_route->group = group;
	53	s_route->source = source;
	54	s_route->iif = iif;
	55	s_route->oif_ttls[oif] = 1;
	56	s_route->c_oil.oil_ref_count = 1;
	57	s_route->c_oil.oil.mfcc_origin = source;
	58	s_route->c_oil.oil.mfcc_mcastgrp = group;
	59	s_route->c_oil.oil.mfcc_parent = iif;
	60	s_route->c_oil.oil.mfcc_ttls[oif] = 1;
	61	s_route->c_oil.oif_creation[oif] = pim_time_monotonic_sec();
	62
	63	return s_route;
6250610a JAG	64	}
	65
	66
4e0bc0f0 DS	67	int pim_static_add(struct pim_instance pim, struct interface iif,
	68	struct interface *oif, struct in_addr group,
	69	struct in_addr source)
6250610a	70	{
d62a17ae	71	struct listnode *node = NULL;
	72	struct static_route *s_route = NULL;
	73	struct static_route *original_s_route = NULL;
	74	struct pim_interface *pim_iif = iif ? iif->info : NULL;
	75	struct pim_interface *pim_oif = oif ? oif->info : NULL;
	76	ifindex_t iif_index = pim_iif ? pim_iif->mroute_vif_index : 0;
	77	ifindex_t oif_index = pim_oif ? pim_oif->mroute_vif_index : 0;
	78
	79	if (!iif_index \|\| !oif_index) {
	80	zlog_warn(
	81	"%s %s: Unable to add static route: Invalid interface index(iif=%d,oif=%d)",
	82	__FILE__, __PRETTY_FUNCTION__, iif_index, oif_index);
	83	return -2;
	84	}
6250610a JAG	85
6250610a JAG	86	#ifdef PIM_ENFORCE_LOOPFREE_MFC
d62a17ae	87	if (iif_index == oif_index) {
	88	/* looped MFC entry */
	89	zlog_warn(
	90	"%s %s: Unable to add static route: Looped MFC entry(iif=%d,oif=%d)",
	91	__FILE__, __PRETTY_FUNCTION__, iif_index, oif_index);
	92	return -4;
	93	}
6250610a	94	#endif
72ec4672 DS	95	if (iif->vrf_id != oif->vrf_id) {
	96	return -3;
	97	}
	98
4e0bc0f0	99	for (ALL_LIST_ELEMENTS_RO(pim->static_routes, node, s_route)) {
d62a17ae	100	if (s_route->group.s_addr == group.s_addr
	101	&& s_route->source.s_addr == source.s_addr) {
	102	if (s_route->iif == iif_index
	103	&& s_route->oif_ttls[oif_index]) {
	104	char gifaddr_str[INET_ADDRSTRLEN];
	105	char sifaddr_str[INET_ADDRSTRLEN];
	106	pim_inet4_dump("<ifaddr?>", group, gifaddr_str,
	107	sizeof(gifaddr_str));
	108	pim_inet4_dump("<ifaddr?>", source, sifaddr_str,
	109	sizeof(sifaddr_str));
	110	zlog_warn(
	111	"%s %s: Unable to add static route: Route already exists (iif=%d,oif=%d,group=%s,source=%s)",
	112	__FILE__, __PRETTY_FUNCTION__,
	113	iif_index, oif_index, gifaddr_str,
	114	sifaddr_str);
	115	return -3;
	116	}
	117
	118	/* Ok, from here on out we will be making changes to the
	119	* s_route structure, but if
	120	* for some reason we fail to commit these changes to
	121	* the kernel, we want to be able
	122	* restore the state of the list. So copy the node data
	123	* and if need be, we can copy
	124	* back if it fails.
	125	*/
	126	original_s_route = static_route_alloc();
	127	if (!original_s_route) {
	128	return -5;
	129	}
	130	memcpy(original_s_route, s_route,
	131	sizeof(struct static_route));
	132
	133	/* Route exists and has the same input interface, but
	134	* adding a new output interface */
	135	if (s_route->iif == iif_index) {
	136	s_route->oif_ttls[oif_index] = 1;
	137	s_route->c_oil.oil.mfcc_ttls[oif_index] = 1;
	138	s_route->c_oil.oif_creation[oif_index] =
	139	pim_time_monotonic_sec();
	140	++s_route->c_oil.oil_ref_count;
	141	} else {
	142	/* input interface changed */
	143	s_route->iif = iif_index;
	144	s_route->c_oil.oil.mfcc_parent = iif_index;
6250610a JAG	145
6250610a JAG	146	#ifdef PIM_ENFORCE_LOOPFREE_MFC
d62a17ae	147	/* check to make sure the new input was not an
	148	* old output */
	149	if (s_route->oif_ttls[iif_index]) {
	150	s_route->oif_ttls[iif_index] = 0;
	151	s_route->c_oil.oif_creation[iif_index] =
	152	0;
	153	s_route->c_oil.oil
	154	.mfcc_ttls[iif_index] = 0;
	155	--s_route->c_oil.oil_ref_count;
	156	}
6250610a JAG	157	#endif
6250610a JAG	158
d62a17ae	159	/* now add the new output, if it is new */
	160	if (!s_route->oif_ttls[oif_index]) {
	161	s_route->oif_ttls[oif_index] = 1;
	162	s_route->c_oil.oif_creation[oif_index] =
	163	pim_time_monotonic_sec();
	164	s_route->c_oil.oil
	165	.mfcc_ttls[oif_index] = 1;
	166	++s_route->c_oil.oil_ref_count;
	167	}
	168	}
	169
	170	break;
	171	}
	172	}
	173
	174	/* If node is null then we reached the end of the list without finding a
	175	* match */
	176	if (!node) {
	177	s_route = static_route_new(iif_index, oif_index, group, source);
4e0bc0f0	178	listnode_add(pim->static_routes, s_route);
d62a17ae	179	}
d62a17ae	180
2e4e8571 DS	181	s_route->c_oil.pim = pim;
2e4e8571 DS	182
d62a17ae	183	if (pim_mroute_add(&s_route->c_oil, __PRETTY_FUNCTION__)) {
	184	char gifaddr_str[INET_ADDRSTRLEN];
	185	char sifaddr_str[INET_ADDRSTRLEN];
	186	pim_inet4_dump("<ifaddr?>", group, gifaddr_str,
	187	sizeof(gifaddr_str));
	188	pim_inet4_dump("<ifaddr?>", source, sifaddr_str,
	189	sizeof(sifaddr_str));
	190	zlog_warn(
	191	"%s %s: Unable to add static route(iif=%d,oif=%d,group=%s,source=%s)",
	192	__FILE__, __PRETTY_FUNCTION__, iif_index, oif_index,
	193	gifaddr_str, sifaddr_str);
	194
	195	/* Need to put s_route back to the way it was */
	196	if (original_s_route) {
	197	memcpy(s_route, original_s_route,
	198	sizeof(struct static_route));
	199	} else {
	200	/* we never stored off a copy, so it must have been a
	201	* fresh new route */
4e0bc0f0	202	listnode_delete(pim->static_routes, s_route);
d62a17ae	203	pim_static_route_free(s_route);
	204	}
	205
	206	if (original_s_route) {
	207	pim_static_route_free(original_s_route);
	208	}
	209
	210	return -1;
	211	}
	212
	213	/* Make sure we free the memory for the route copy if used */
	214	if (original_s_route) {
	215	pim_static_route_free(original_s_route);
	216	}
	217
	218	if (PIM_DEBUG_STATIC) {
	219	char gifaddr_str[INET_ADDRSTRLEN];
	220	char sifaddr_str[INET_ADDRSTRLEN];
	221	pim_inet4_dump("<ifaddr?>", group, gifaddr_str,
	222	sizeof(gifaddr_str));
	223	pim_inet4_dump("<ifaddr?>", source, sifaddr_str,
	224	sizeof(sifaddr_str));
	225	zlog_debug(
	226	"%s: Static route added(iif=%d,oif=%d,group=%s,source=%s)",
	227	__PRETTY_FUNCTION__, iif_index, oif_index, gifaddr_str,
	228	sifaddr_str);
	229	}
	230
	231	return 0;
6250610a JAG	232	}
6250610a JAG	233
4e0bc0f0 DS	234	int pim_static_del(struct pim_instance pim, struct interface iif,
	235	struct interface *oif, struct in_addr group,
	236	struct in_addr source)
6250610a	237	{
d62a17ae	238	struct listnode *node = NULL;
	239	struct listnode *nextnode = NULL;
	240	struct static_route *s_route = NULL;
	241	struct pim_interface *pim_iif = iif ? iif->info : 0;
	242	struct pim_interface *pim_oif = oif ? oif->info : 0;
	243	ifindex_t iif_index = pim_iif ? pim_iif->mroute_vif_index : 0;
	244	ifindex_t oif_index = pim_oif ? pim_oif->mroute_vif_index : 0;
	245
	246	if (!iif_index \|\| !oif_index) {
	247	zlog_warn(
	248	"%s %s: Unable to remove static route: Invalid interface index(iif=%d,oif=%d)",
	249	__FILE__, __PRETTY_FUNCTION__, iif_index, oif_index);
	250	return -2;
	251	}
	252
4e0bc0f0	253	for (ALL_LIST_ELEMENTS(pim->static_routes, node, nextnode, s_route)) {
d62a17ae	254	if (s_route->iif == iif_index
	255	&& s_route->group.s_addr == group.s_addr
	256	&& s_route->source.s_addr == source.s_addr
	257	&& s_route->oif_ttls[oif_index]) {
	258	s_route->oif_ttls[oif_index] = 0;
	259	s_route->c_oil.oil.mfcc_ttls[oif_index] = 0;
	260	--s_route->c_oil.oil_ref_count;
	261
	262	/* If there are no more outputs then delete the whole
	263	* route, otherwise set the route with the new outputs
	264	*/
	265	if (s_route->c_oil.oil_ref_count <= 0
	266	? pim_mroute_del(&s_route->c_oil,
	267	__PRETTY_FUNCTION__)
	268	: pim_mroute_add(&s_route->c_oil,
	269	__PRETTY_FUNCTION__)) {
	270	char gifaddr_str[INET_ADDRSTRLEN];
	271	char sifaddr_str[INET_ADDRSTRLEN];
	272	pim_inet4_dump("<ifaddr?>", group, gifaddr_str,
	273	sizeof(gifaddr_str));
	274	pim_inet4_dump("<ifaddr?>", source, sifaddr_str,
	275	sizeof(sifaddr_str));
	276	zlog_warn(
	277	"%s %s: Unable to remove static route(iif=%d,oif=%d,group=%s,source=%s)",
	278	__FILE__, __PRETTY_FUNCTION__,
	279	iif_index, oif_index, gifaddr_str,
	280	sifaddr_str);
	281
	282	s_route->oif_ttls[oif_index] = 1;
	283	s_route->c_oil.oil.mfcc_ttls[oif_index] = 1;
	284	++s_route->c_oil.oil_ref_count;
	285
	286	return -1;
	287	}
	288
	289	s_route->c_oil.oif_creation[oif_index] = 0;
	290
	291	if (s_route->c_oil.oil_ref_count <= 0) {
4e0bc0f0	292	listnode_delete(pim->static_routes, s_route);
d62a17ae	293	pim_static_route_free(s_route);
	294	}
	295
	296	if (PIM_DEBUG_STATIC) {
	297	char gifaddr_str[INET_ADDRSTRLEN];
	298	char sifaddr_str[INET_ADDRSTRLEN];
	299	pim_inet4_dump("<ifaddr?>", group, gifaddr_str,
	300	sizeof(gifaddr_str));
	301	pim_inet4_dump("<ifaddr?>", source, sifaddr_str,
	302	sizeof(sifaddr_str));
	303	zlog_debug(
	304	"%s: Static route removed(iif=%d,oif=%d,group=%s,source=%s)",
	305	__PRETTY_FUNCTION__, iif_index,
	306	oif_index, gifaddr_str, sifaddr_str);
	307	}
	308
	309	break;
	310	}
	311	}
	312
	313	if (!node) {
	314	char gifaddr_str[INET_ADDRSTRLEN];
	315	char sifaddr_str[INET_ADDRSTRLEN];
	316	pim_inet4_dump("<ifaddr?>", group, gifaddr_str,
	317	sizeof(gifaddr_str));
	318	pim_inet4_dump("<ifaddr?>", source, sifaddr_str,
	319	sizeof(sifaddr_str));
	320	zlog_warn(
	321	"%s %s: Unable to remove static route: Route does not exist(iif=%d,oif=%d,group=%s,source=%s)",
	322	__FILE__, __PRETTY_FUNCTION__, iif_index, oif_index,
	323	gifaddr_str, sifaddr_str);
	324	return -3;
	325	}
	326
	327	return 0;
6250610a	328	}
f91f89bc	329
64c86530	330	int pim_static_write_mroute(struct pim_instance pim, struct vty vty,
4e0bc0f0	331	struct interface *ifp)
f91f89bc	332	{
d62a17ae	333	struct pim_interface *pim_ifp = ifp->info;
	334	struct listnode *node;
	335	struct static_route *sroute;
	336	int count = 0;
	337	char sbuf[INET_ADDRSTRLEN];
	338	char gbuf[INET_ADDRSTRLEN];
	339
	340	if (!pim_ifp)
	341	return 0;
	342
4e0bc0f0	343	for (ALL_LIST_ELEMENTS_RO(pim->static_routes, node, sroute)) {
d62a17ae	344	pim_inet4_dump("<ifaddr?>", sroute->group, gbuf, sizeof(gbuf));
	345	pim_inet4_dump("<ifaddr?>", sroute->source, sbuf, sizeof(sbuf));
	346	if (sroute->iif == pim_ifp->mroute_vif_index) {
	347	int i;
	348	for (i = 0; i < MAXVIFS; i++)
	349	if (sroute->oif_ttls[i]) {
	350	struct interface *oifp =
7cfc7bcf DS	351	pim_if_find_by_vif_index(pim,
7cfc7bcf DS	352	i);
d62a17ae	353	if (sroute->source.s_addr == 0)
	354	vty_out(vty,
	355	" ip mroute %s %s\n",
	356	oifp->name, gbuf);
	357	else
	358	vty_out(vty,
	359	" ip mroute %s %s %s\n",
	360	oifp->name, gbuf, sbuf);
	361	count++;
	362	}
	363	}
	364	}
	365
	366	return count;
f91f89bc	367	}