[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 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 modifed 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 modifed 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
b09956ca RW	36	#define OFFSET_LIST_IN_NAME(O) ((O)->direct[RIPNG_OFFSET_LIST_IN].alist_name)
	37	#define OFFSET_LIST_IN_METRIC(O) ((O)->direct[RIPNG_OFFSET_LIST_IN].metric)
	38
	39	#define OFFSET_LIST_OUT_NAME(O) ((O)->direct[RIPNG_OFFSET_LIST_OUT].alist_name)
	40	#define OFFSET_LIST_OUT_METRIC(O) ((O)->direct[RIPNG_OFFSET_LIST_OUT].metric)
a94434b6	41
5c84b9a5 RW	42	struct ripng_offset_list ripng_offset_list_new(struct ripng ripng,
5c84b9a5 RW	43	const char *ifname)
a94434b6	44	{
d62a17ae	45	struct ripng_offset_list *new;
a94434b6	46
d62a17ae	47	new = XCALLOC(MTYPE_RIPNG_OFFSET_LIST,
d62a17ae	48	sizeof(struct ripng_offset_list));
5c84b9a5	49	new->ripng = ripng;
b09956ca	50	new->ifname = strdup(ifname);
26c6be93	51	listnode_add_sort(ripng->offset_list_master, new);
b09956ca	52
d62a17ae	53	return new;
a94434b6	54	}
a94434b6	55
b09956ca	56	void ripng_offset_list_del(struct ripng_offset_list *offset)
a94434b6	57	{
5c84b9a5	58	listnode_delete(offset->ripng->offset_list_master, offset);
6c4c3561 RW	59	ripng_offset_list_free(offset);
	60	}
	61
	62	void ripng_offset_list_free(struct ripng_offset_list *offset)
	63	{
b09956ca RW	64	if (OFFSET_LIST_IN_NAME(offset))
	65	free(OFFSET_LIST_IN_NAME(offset));
	66	if (OFFSET_LIST_OUT_NAME(offset))
	67	free(OFFSET_LIST_OUT_NAME(offset));
	68	free(offset->ifname);
d62a17ae	69	XFREE(MTYPE_RIPNG_OFFSET_LIST, offset);
a94434b6	70	}
a94434b6	71
5c84b9a5 RW	72	struct ripng_offset_list ripng_offset_list_lookup(struct ripng ripng,
5c84b9a5 RW	73	const char *ifname)
a94434b6	74	{
d62a17ae	75	struct ripng_offset_list *offset;
d62a17ae	76	struct listnode node, nnode;
a94434b6	77
26c6be93 RW	78	for (ALL_LIST_ELEMENTS(ripng->offset_list_master, node, nnode,
26c6be93 RW	79	offset)) {
b09956ca	80	if (strcmp(offset->ifname, ifname) == 0)
d62a17ae	81	return offset;
	82	}
	83	return NULL;
a94434b6	84	}
a94434b6	85
a94434b6	86	/* If metric is modifed return 1. */
5c84b9a5 RW	87	int ripng_offset_list_apply_in(struct ripng ripng, struct prefix_ipv6 p,
5c84b9a5 RW	88	struct interface ifp, uint8_t metric)
a94434b6	89	{
d62a17ae	90	struct ripng_offset_list *offset;
	91	struct access_list *alist;
	92
	93	/* Look up offset-list with interface name. */
5c84b9a5	94	offset = ripng_offset_list_lookup(ripng, ifp->name);
d62a17ae	95	if (offset && OFFSET_LIST_IN_NAME(offset)) {
	96	alist = access_list_lookup(AFI_IP6,
	97	OFFSET_LIST_IN_NAME(offset));
	98
	99	if (alist
	100	&& access_list_apply(alist, (struct prefix *)p)
	101	== FILTER_PERMIT) {
	102	*metric += OFFSET_LIST_IN_METRIC(offset);
	103	return 1;
	104	}
	105	return 0;
a94434b6	106	}
d62a17ae	107	/* Look up offset-list without interface name. */
5c84b9a5	108	offset = ripng_offset_list_lookup(ripng, "*");
d62a17ae	109	if (offset && OFFSET_LIST_IN_NAME(offset)) {
	110	alist = access_list_lookup(AFI_IP6,
	111	OFFSET_LIST_IN_NAME(offset));
	112
	113	if (alist
	114	&& access_list_apply(alist, (struct prefix *)p)
	115	== FILTER_PERMIT) {
	116	*metric += OFFSET_LIST_IN_METRIC(offset);
	117	return 1;
	118	}
	119	return 0;
a94434b6	120	}
d62a17ae	121	return 0;
a94434b6	122	}
	123
	124	/* If metric is modifed return 1. */
5c84b9a5 RW	125	int ripng_offset_list_apply_out(struct ripng ripng, struct prefix_ipv6 p,
5c84b9a5 RW	126	struct interface ifp, uint8_t metric)
a94434b6	127	{
d62a17ae	128	struct ripng_offset_list *offset;
	129	struct access_list *alist;
	130
	131	/* Look up offset-list with interface name. */
5c84b9a5	132	offset = ripng_offset_list_lookup(ripng, ifp->name);
d62a17ae	133	if (offset && OFFSET_LIST_OUT_NAME(offset)) {
	134	alist = access_list_lookup(AFI_IP6,
	135	OFFSET_LIST_OUT_NAME(offset));
	136
	137	if (alist
	138	&& access_list_apply(alist, (struct prefix *)p)
	139	== FILTER_PERMIT) {
	140	*metric += OFFSET_LIST_OUT_METRIC(offset);
	141	return 1;
	142	}
	143	return 0;
a94434b6	144	}
d62a17ae	145
d62a17ae	146	/* Look up offset-list without interface name. */
5c84b9a5	147	offset = ripng_offset_list_lookup(ripng, "*");
d62a17ae	148	if (offset && OFFSET_LIST_OUT_NAME(offset)) {
	149	alist = access_list_lookup(AFI_IP6,
	150	OFFSET_LIST_OUT_NAME(offset));
	151
	152	if (alist
	153	&& access_list_apply(alist, (struct prefix *)p)
	154	== FILTER_PERMIT) {
	155	*metric += OFFSET_LIST_OUT_METRIC(offset);
	156	return 1;
	157	}
	158	return 0;
a94434b6	159	}
d62a17ae	160	return 0;
a94434b6	161	}
a94434b6	162
26c6be93	163	int offset_list_cmp(struct ripng_offset_list o1, struct ripng_offset_list o2)
a94434b6	164	{
b09956ca	165	return strcmp(o1->ifname, o2->ifname);
a94434b6	166	}