[mirror_frr.git] / ripngd / ripng_offset.c

/* RIPng offset-list
 * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
 *
 * This file is part of GNU Zebra.
 *
 * GNU Zebra 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, or (at your option) any
 * later version.
 *
 * GNU Zebra 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
 */

/* RIPng support by Vincent Jardin <vincent.jardin@6wind.com>
 * Copyright (C) 2002 6WIND
 */

#include <zebra.h>

#include "if.h"
#include "prefix.h"
#include "filter.h"
#include "command.h"
#include "linklist.h"
#include "memory.h"

#include "ripngd/ripngd.h"

DEFINE_MTYPE_STATIC(RIPNGD, RIPNG_OFFSET_LIST, "RIPng offset lst");

#define OFFSET_LIST_IN_NAME(O)  ((O)->direct[RIPNG_OFFSET_LIST_IN].alist_name)
#define OFFSET_LIST_IN_METRIC(O)  ((O)->direct[RIPNG_OFFSET_LIST_IN].metric)

#define OFFSET_LIST_OUT_NAME(O)  ((O)->direct[RIPNG_OFFSET_LIST_OUT].alist_name)
#define OFFSET_LIST_OUT_METRIC(O)  ((O)->direct[RIPNG_OFFSET_LIST_OUT].metric)

struct ripng_offset_list *ripng_offset_list_new(struct ripng *ripng,
						const char *ifname)
{
	struct ripng_offset_list *new;

	new = XCALLOC(MTYPE_RIPNG_OFFSET_LIST,
		      sizeof(struct ripng_offset_list));
	new->ripng = ripng;
	new->ifname = strdup(ifname);
	listnode_add_sort(ripng->offset_list_master, new);

	return new;
}

void ripng_offset_list_del(struct ripng_offset_list *offset)
{
	listnode_delete(offset->ripng->offset_list_master, offset);
	ripng_offset_list_free(offset);
}

void ripng_offset_list_free(struct ripng_offset_list *offset)
{
	if (OFFSET_LIST_IN_NAME(offset))
		free(OFFSET_LIST_IN_NAME(offset));
	if (OFFSET_LIST_OUT_NAME(offset))
		free(OFFSET_LIST_OUT_NAME(offset));
	free(offset->ifname);
	XFREE(MTYPE_RIPNG_OFFSET_LIST, offset);
}

struct ripng_offset_list *ripng_offset_list_lookup(struct ripng *ripng,
						   const char *ifname)
{
	struct ripng_offset_list *offset;
	struct listnode *node, *nnode;

	for (ALL_LIST_ELEMENTS(ripng->offset_list_master, node, nnode,
			       offset)) {
		if (strcmp(offset->ifname, ifname) == 0)
			return offset;
	}
	return NULL;
}

/* If metric is modified return 1. */
int ripng_offset_list_apply_in(struct ripng *ripng, struct prefix_ipv6 *p,
			       struct interface *ifp, uint8_t *metric)
{
	struct ripng_offset_list *offset;
	struct access_list *alist;

	/* Look up offset-list with interface name. */
	offset = ripng_offset_list_lookup(ripng, ifp->name);
	if (offset && OFFSET_LIST_IN_NAME(offset)) {
		alist = access_list_lookup(AFI_IP6,
					   OFFSET_LIST_IN_NAME(offset));

		if (alist
		    && access_list_apply(alist, (struct prefix *)p)
			       == FILTER_PERMIT) {
			*metric += OFFSET_LIST_IN_METRIC(offset);
			return 1;
		}
		return 0;
	}
	/* Look up offset-list without interface name. */
	offset = ripng_offset_list_lookup(ripng, "*");
	if (offset && OFFSET_LIST_IN_NAME(offset)) {
		alist = access_list_lookup(AFI_IP6,
					   OFFSET_LIST_IN_NAME(offset));

		if (alist
		    && access_list_apply(alist, (struct prefix *)p)
			       == FILTER_PERMIT) {
			*metric += OFFSET_LIST_IN_METRIC(offset);
			return 1;
		}
		return 0;
	}
	return 0;
}

/* If metric is modified return 1. */
int ripng_offset_list_apply_out(struct ripng *ripng, struct prefix_ipv6 *p,
				struct interface *ifp, uint8_t *metric)
{
	struct ripng_offset_list *offset;
	struct access_list *alist;

	/* Look up offset-list with interface name. */
	offset = ripng_offset_list_lookup(ripng, ifp->name);
	if (offset && OFFSET_LIST_OUT_NAME(offset)) {
		alist = access_list_lookup(AFI_IP6,
					   OFFSET_LIST_OUT_NAME(offset));

		if (alist
		    && access_list_apply(alist, (struct prefix *)p)
			       == FILTER_PERMIT) {
			*metric += OFFSET_LIST_OUT_METRIC(offset);
			return 1;
		}
		return 0;
	}

	/* Look up offset-list without interface name. */
	offset = ripng_offset_list_lookup(ripng, "*");
	if (offset && OFFSET_LIST_OUT_NAME(offset)) {
		alist = access_list_lookup(AFI_IP6,
					   OFFSET_LIST_OUT_NAME(offset));

		if (alist
		    && access_list_apply(alist, (struct prefix *)p)
			       == FILTER_PERMIT) {
			*metric += OFFSET_LIST_OUT_METRIC(offset);
			return 1;
		}
		return 0;
	}
	return 0;
}

int offset_list_cmp(struct ripng_offset_list *o1, struct ripng_offset_list *o2)
{
	return strcmp(o1->ifname, o2->ifname);
}
Commit	Line	Data
a94434b6	1	/* RIPng offset-list
	2	* Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
	3	*
	4	* This file is part of GNU Zebra.
	5	*
	6	* GNU Zebra is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation; either version 2, or (at your option) any
	9	* later version.
	10	*
	11	* GNU Zebra is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* General Public License for more details.
	15	*
896014f4 DL	16	* You should have received a copy of the GNU General Public License along
	17	* with this program; see the file COPYING; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
a94434b6	19	*/
a94434b6	20
d62a17ae	21	/* RIPng support by Vincent Jardin <vincent.jardin@6wind.com>
	22	* Copyright (C) 2002 6WIND
	23	*/
a94434b6	24
	25	#include <zebra.h>
	26
	27	#include "if.h"
	28	#include "prefix.h"
	29	#include "filter.h"
	30	#include "command.h"
	31	#include "linklist.h"
	32	#include "memory.h"
	33
6ac29a51 PJ	34	#include "ripngd/ripngd.h"
6ac29a51 PJ	35
bf8d3d6a	36	DEFINE_MTYPE_STATIC(RIPNGD, RIPNG_OFFSET_LIST, "RIPng offset lst");
b3a7e30d	37
b09956ca RW	38	#define OFFSET_LIST_IN_NAME(O) ((O)->direct[RIPNG_OFFSET_LIST_IN].alist_name)
	39	#define OFFSET_LIST_IN_METRIC(O) ((O)->direct[RIPNG_OFFSET_LIST_IN].metric)
	40
	41	#define OFFSET_LIST_OUT_NAME(O) ((O)->direct[RIPNG_OFFSET_LIST_OUT].alist_name)
	42	#define OFFSET_LIST_OUT_METRIC(O) ((O)->direct[RIPNG_OFFSET_LIST_OUT].metric)
a94434b6	43
5c84b9a5 RW	44	struct ripng_offset_list ripng_offset_list_new(struct ripng ripng,
5c84b9a5 RW	45	const char *ifname)
a94434b6	46	{
d62a17ae	47	struct ripng_offset_list *new;
a94434b6	48
d62a17ae	49	new = XCALLOC(MTYPE_RIPNG_OFFSET_LIST,
d62a17ae	50	sizeof(struct ripng_offset_list));
5c84b9a5	51	new->ripng = ripng;
b09956ca	52	new->ifname = strdup(ifname);
26c6be93	53	listnode_add_sort(ripng->offset_list_master, new);
b09956ca	54
d62a17ae	55	return new;
a94434b6	56	}
a94434b6	57
b09956ca	58	void ripng_offset_list_del(struct ripng_offset_list *offset)
a94434b6	59	{
5c84b9a5	60	listnode_delete(offset->ripng->offset_list_master, offset);
6c4c3561 RW	61	ripng_offset_list_free(offset);
	62	}
	63
	64	void ripng_offset_list_free(struct ripng_offset_list *offset)
	65	{
b09956ca RW	66	if (OFFSET_LIST_IN_NAME(offset))
	67	free(OFFSET_LIST_IN_NAME(offset));
	68	if (OFFSET_LIST_OUT_NAME(offset))
	69	free(OFFSET_LIST_OUT_NAME(offset));
	70	free(offset->ifname);
d62a17ae	71	XFREE(MTYPE_RIPNG_OFFSET_LIST, offset);
a94434b6	72	}
a94434b6	73
5c84b9a5 RW	74	struct ripng_offset_list ripng_offset_list_lookup(struct ripng ripng,
5c84b9a5 RW	75	const char *ifname)
a94434b6	76	{
d62a17ae	77	struct ripng_offset_list *offset;
d62a17ae	78	struct listnode node, nnode;
a94434b6	79
26c6be93 RW	80	for (ALL_LIST_ELEMENTS(ripng->offset_list_master, node, nnode,
26c6be93 RW	81	offset)) {
b09956ca	82	if (strcmp(offset->ifname, ifname) == 0)
d62a17ae	83	return offset;
	84	}
	85	return NULL;
a94434b6	86	}
a94434b6	87
eaf59d27	88	/* If metric is modified return 1. */
5c84b9a5 RW	89	int ripng_offset_list_apply_in(struct ripng ripng, struct prefix_ipv6 p,
5c84b9a5 RW	90	struct interface ifp, uint8_t metric)
a94434b6	91	{
d62a17ae	92	struct ripng_offset_list *offset;
	93	struct access_list *alist;
	94
	95	/* Look up offset-list with interface name. */
5c84b9a5	96	offset = ripng_offset_list_lookup(ripng, ifp->name);
d62a17ae	97	if (offset && OFFSET_LIST_IN_NAME(offset)) {
	98	alist = access_list_lookup(AFI_IP6,
	99	OFFSET_LIST_IN_NAME(offset));
	100
	101	if (alist
	102	&& access_list_apply(alist, (struct prefix *)p)
	103	== FILTER_PERMIT) {
	104	*metric += OFFSET_LIST_IN_METRIC(offset);
	105	return 1;
	106	}
	107	return 0;
a94434b6	108	}
d62a17ae	109	/* Look up offset-list without interface name. */
5c84b9a5	110	offset = ripng_offset_list_lookup(ripng, "*");
d62a17ae	111	if (offset && OFFSET_LIST_IN_NAME(offset)) {
	112	alist = access_list_lookup(AFI_IP6,
	113	OFFSET_LIST_IN_NAME(offset));
	114
	115	if (alist
	116	&& access_list_apply(alist, (struct prefix *)p)
	117	== FILTER_PERMIT) {
	118	*metric += OFFSET_LIST_IN_METRIC(offset);
	119	return 1;
	120	}
	121	return 0;
a94434b6	122	}
d62a17ae	123	return 0;
a94434b6	124	}
a94434b6	125
eaf59d27	126	/* If metric is modified return 1. */
5c84b9a5 RW	127	int ripng_offset_list_apply_out(struct ripng ripng, struct prefix_ipv6 p,
5c84b9a5 RW	128	struct interface ifp, uint8_t metric)
a94434b6	129	{
d62a17ae	130	struct ripng_offset_list *offset;
	131	struct access_list *alist;
	132
	133	/* Look up offset-list with interface name. */
5c84b9a5	134	offset = ripng_offset_list_lookup(ripng, ifp->name);
d62a17ae	135	if (offset && OFFSET_LIST_OUT_NAME(offset)) {
	136	alist = access_list_lookup(AFI_IP6,
	137	OFFSET_LIST_OUT_NAME(offset));
	138
	139	if (alist
	140	&& access_list_apply(alist, (struct prefix *)p)
	141	== FILTER_PERMIT) {
	142	*metric += OFFSET_LIST_OUT_METRIC(offset);
	143	return 1;
	144	}
	145	return 0;
a94434b6	146	}
d62a17ae	147
d62a17ae	148	/* Look up offset-list without interface name. */
5c84b9a5	149	offset = ripng_offset_list_lookup(ripng, "*");
d62a17ae	150	if (offset && OFFSET_LIST_OUT_NAME(offset)) {
	151	alist = access_list_lookup(AFI_IP6,
	152	OFFSET_LIST_OUT_NAME(offset));
	153
	154	if (alist
	155	&& access_list_apply(alist, (struct prefix *)p)
	156	== FILTER_PERMIT) {
	157	*metric += OFFSET_LIST_OUT_METRIC(offset);
	158	return 1;
	159	}
	160	return 0;
a94434b6	161	}
d62a17ae	162	return 0;
a94434b6	163	}
a94434b6	164
26c6be93	165	int offset_list_cmp(struct ripng_offset_list o1, struct ripng_offset_list o2)
a94434b6	166	{
b09956ca	167	return strcmp(o1->ifname, o2->ifname);
a94434b6	168	}