[mirror_frr.git] / ripd / rip_offset.c

/* RIP 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
 */

#include <zebra.h>

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

#include "ripd/ripd.h"

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

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

struct rip_offset_list *rip_offset_list_new(struct rip *rip, const char *ifname)
{
	struct rip_offset_list *offset;

	offset = XCALLOC(MTYPE_RIP_OFFSET_LIST, sizeof(struct rip_offset_list));
	offset->rip = rip;
	offset->ifname = strdup(ifname);
	listnode_add_sort(rip->offset_list_master, offset);

	return offset;
}

void offset_list_del(struct rip_offset_list *offset)
{
	listnode_delete(offset->rip->offset_list_master, offset);
	offset_list_free(offset);
}

void offset_list_free(struct rip_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_RIP_OFFSET_LIST, offset);
}

struct rip_offset_list *rip_offset_list_lookup(struct rip *rip,
					       const char *ifname)
{
	struct rip_offset_list *offset;
	struct listnode *node, *nnode;

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

/* If metric is modifed return 1. */
int rip_offset_list_apply_in(struct prefix_ipv4 *p, struct interface *ifp,
			     uint32_t *metric)
{
	struct rip_interface *ri = ifp->info;
	struct rip_offset_list *offset;
	struct access_list *alist;

	/* Look up offset-list with interface name. */
	offset = rip_offset_list_lookup(ri->rip, ifp->name);
	if (offset && OFFSET_LIST_IN_NAME(offset)) {
		alist = access_list_lookup(AFI_IP, 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 = rip_offset_list_lookup(ri->rip, "*");
	if (offset && OFFSET_LIST_IN_NAME(offset)) {
		alist = access_list_lookup(AFI_IP, 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 rip_offset_list_apply_out(struct prefix_ipv4 *p, struct interface *ifp,
			      uint32_t *metric)
{
	struct rip_interface *ri = ifp->info;
	struct rip_offset_list *offset;
	struct access_list *alist;

	/* Look up offset-list with interface name. */
	offset = rip_offset_list_lookup(ri->rip, ifp->name);
	if (offset && OFFSET_LIST_OUT_NAME(offset)) {
		alist = access_list_lookup(AFI_IP,
					   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 = rip_offset_list_lookup(ri->rip, "*");
	if (offset && OFFSET_LIST_OUT_NAME(offset)) {
		alist = access_list_lookup(AFI_IP,
					   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 rip_offset_list *o1, struct rip_offset_list *o2)
{
	return strcmp(o1->ifname, o2->ifname);
}
Commit	Line	Data
718e3744	1	/* RIP 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
718e3744	19	*/
	20
	21	#include <zebra.h>
	22
	23	#include "if.h"
	24	#include "prefix.h"
	25	#include "filter.h"
	26	#include "command.h"
	27	#include "linklist.h"
	28	#include "memory.h"
	29
dc63bfd4	30	#include "ripd/ripd.h"
dc63bfd4	31
8c942f65 RW	32	#define OFFSET_LIST_IN_NAME(O) ((O)->direct[RIP_OFFSET_LIST_IN].alist_name)
8c942f65 RW	33	#define OFFSET_LIST_IN_METRIC(O) ((O)->direct[RIP_OFFSET_LIST_IN].metric)
718e3744	34
8c942f65 RW	35	#define OFFSET_LIST_OUT_NAME(O) ((O)->direct[RIP_OFFSET_LIST_OUT].alist_name)
8c942f65 RW	36	#define OFFSET_LIST_OUT_METRIC(O) ((O)->direct[RIP_OFFSET_LIST_OUT].metric)
718e3744	37
045c5389	38	struct rip_offset_list rip_offset_list_new(struct rip rip, const char *ifname)
718e3744	39	{
d62a17ae	40	struct rip_offset_list *offset;
d62a17ae	41
8c942f65	42	offset = XCALLOC(MTYPE_RIP_OFFSET_LIST, sizeof(struct rip_offset_list));
045c5389	43	offset->rip = rip;
8c942f65	44	offset->ifname = strdup(ifname);
3f21c8c4	45	listnode_add_sort(rip->offset_list_master, offset);
d62a17ae	46
d62a17ae	47	return offset;
718e3744	48	}
718e3744	49
8c942f65	50	void offset_list_del(struct rip_offset_list *offset)
718e3744	51	{
045c5389	52	listnode_delete(offset->rip->offset_list_master, offset);
6c4c3561 RW	53	offset_list_free(offset);
	54	}
	55
	56	void offset_list_free(struct rip_offset_list *offset)
	57	{
8c942f65 RW	58	if (OFFSET_LIST_IN_NAME(offset))
	59	free(OFFSET_LIST_IN_NAME(offset));
	60	if (OFFSET_LIST_OUT_NAME(offset))
	61	free(OFFSET_LIST_OUT_NAME(offset));
	62	free(offset->ifname);
	63	XFREE(MTYPE_RIP_OFFSET_LIST, offset);
718e3744	64	}
718e3744	65
045c5389 RW	66	struct rip_offset_list rip_offset_list_lookup(struct rip rip,
045c5389 RW	67	const char *ifname)
718e3744	68	{
d62a17ae	69	struct rip_offset_list *offset;
8c942f65	70	struct listnode node, nnode;
d62a17ae	71
3f21c8c4	72	for (ALL_LIST_ELEMENTS(rip->offset_list_master, node, nnode, offset)) {
8c942f65 RW	73	if (strcmp(offset->ifname, ifname) == 0)
8c942f65 RW	74	return offset;
d62a17ae	75	}
8c942f65	76	return NULL;
718e3744	77	}
718e3744	78
718e3744	79	/* If metric is modifed return 1. */
d62a17ae	80	int rip_offset_list_apply_in(struct prefix_ipv4 p, struct interface ifp,
d7c0a89a	81	uint32_t *metric)
718e3744	82	{
045c5389	83	struct rip_interface *ri = ifp->info;
d62a17ae	84	struct rip_offset_list *offset;
	85	struct access_list *alist;
	86
	87	/* Look up offset-list with interface name. */
045c5389	88	offset = rip_offset_list_lookup(ri->rip, ifp->name);
d62a17ae	89	if (offset && OFFSET_LIST_IN_NAME(offset)) {
	90	alist = access_list_lookup(AFI_IP, OFFSET_LIST_IN_NAME(offset));
	91
	92	if (alist
	93	&& access_list_apply(alist, (struct prefix *)p)
	94	== FILTER_PERMIT) {
	95	*metric += OFFSET_LIST_IN_METRIC(offset);
	96	return 1;
	97	}
	98	return 0;
718e3744	99	}
d62a17ae	100	/* Look up offset-list without interface name. */
045c5389	101	offset = rip_offset_list_lookup(ri->rip, "*");
d62a17ae	102	if (offset && OFFSET_LIST_IN_NAME(offset)) {
	103	alist = access_list_lookup(AFI_IP, OFFSET_LIST_IN_NAME(offset));
	104
	105	if (alist
	106	&& access_list_apply(alist, (struct prefix *)p)
	107	== FILTER_PERMIT) {
	108	*metric += OFFSET_LIST_IN_METRIC(offset);
	109	return 1;
	110	}
	111	return 0;
718e3744	112	}
d62a17ae	113	return 0;
718e3744	114	}
	115
	116	/* If metric is modifed return 1. */
d62a17ae	117	int rip_offset_list_apply_out(struct prefix_ipv4 p, struct interface ifp,
d7c0a89a	118	uint32_t *metric)
718e3744	119	{
045c5389	120	struct rip_interface *ri = ifp->info;
d62a17ae	121	struct rip_offset_list *offset;
	122	struct access_list *alist;
	123
	124	/* Look up offset-list with interface name. */
045c5389	125	offset = rip_offset_list_lookup(ri->rip, ifp->name);
d62a17ae	126	if (offset && OFFSET_LIST_OUT_NAME(offset)) {
	127	alist = access_list_lookup(AFI_IP,
	128	OFFSET_LIST_OUT_NAME(offset));
	129
	130	if (alist
	131	&& access_list_apply(alist, (struct prefix *)p)
	132	== FILTER_PERMIT) {
	133	*metric += OFFSET_LIST_OUT_METRIC(offset);
	134	return 1;
	135	}
	136	return 0;
718e3744	137	}
d62a17ae	138
d62a17ae	139	/* Look up offset-list without interface name. */
045c5389	140	offset = rip_offset_list_lookup(ri->rip, "*");
d62a17ae	141	if (offset && OFFSET_LIST_OUT_NAME(offset)) {
	142	alist = access_list_lookup(AFI_IP,
	143	OFFSET_LIST_OUT_NAME(offset));
	144
	145	if (alist
	146	&& access_list_apply(alist, (struct prefix *)p)
	147	== FILTER_PERMIT) {
	148	*metric += OFFSET_LIST_OUT_METRIC(offset);
	149	return 1;
	150	}
	151	return 0;
718e3744	152	}
d62a17ae	153	return 0;
718e3744	154	}
718e3744	155
3f21c8c4	156	int offset_list_cmp(struct rip_offset_list o1, struct rip_offset_list o2)
718e3744	157	{
8c942f65	158	return strcmp(o1->ifname, o2->ifname);
718e3744	159	}