[mirror_frr.git] / ripngd / ripng_offset.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* RIPng offset-list
 * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
 */

/* 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
acddc0ed	1	// SPDX-License-Identifier: GPL-2.0-or-later
a94434b6	2	/* RIPng offset-list
a94434b6	3	* Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
a94434b6	4	*/
a94434b6	5
d62a17ae	6	/* RIPng support by Vincent Jardin <vincent.jardin@6wind.com>
	7	* Copyright (C) 2002 6WIND
	8	*/
a94434b6	9
	10	#include <zebra.h>
	11
	12	#include "if.h"
	13	#include "prefix.h"
	14	#include "filter.h"
	15	#include "command.h"
	16	#include "linklist.h"
	17	#include "memory.h"
	18
6ac29a51 PJ	19	#include "ripngd/ripngd.h"
6ac29a51 PJ	20
bf8d3d6a	21	DEFINE_MTYPE_STATIC(RIPNGD, RIPNG_OFFSET_LIST, "RIPng offset lst");
b3a7e30d	22
b09956ca RW	23	#define OFFSET_LIST_IN_NAME(O) ((O)->direct[RIPNG_OFFSET_LIST_IN].alist_name)
	24	#define OFFSET_LIST_IN_METRIC(O) ((O)->direct[RIPNG_OFFSET_LIST_IN].metric)
	25
	26	#define OFFSET_LIST_OUT_NAME(O) ((O)->direct[RIPNG_OFFSET_LIST_OUT].alist_name)
	27	#define OFFSET_LIST_OUT_METRIC(O) ((O)->direct[RIPNG_OFFSET_LIST_OUT].metric)
a94434b6	28
5c84b9a5 RW	29	struct ripng_offset_list ripng_offset_list_new(struct ripng ripng,
5c84b9a5 RW	30	const char *ifname)
a94434b6	31	{
d62a17ae	32	struct ripng_offset_list *new;
a94434b6	33
d62a17ae	34	new = XCALLOC(MTYPE_RIPNG_OFFSET_LIST,
d62a17ae	35	sizeof(struct ripng_offset_list));
5c84b9a5	36	new->ripng = ripng;
b09956ca	37	new->ifname = strdup(ifname);
26c6be93	38	listnode_add_sort(ripng->offset_list_master, new);
b09956ca	39
d62a17ae	40	return new;
a94434b6	41	}
a94434b6	42
b09956ca	43	void ripng_offset_list_del(struct ripng_offset_list *offset)
a94434b6	44	{
5c84b9a5	45	listnode_delete(offset->ripng->offset_list_master, offset);
6c4c3561 RW	46	ripng_offset_list_free(offset);
	47	}
	48
	49	void ripng_offset_list_free(struct ripng_offset_list *offset)
	50	{
b09956ca RW	51	if (OFFSET_LIST_IN_NAME(offset))
	52	free(OFFSET_LIST_IN_NAME(offset));
	53	if (OFFSET_LIST_OUT_NAME(offset))
	54	free(OFFSET_LIST_OUT_NAME(offset));
	55	free(offset->ifname);
d62a17ae	56	XFREE(MTYPE_RIPNG_OFFSET_LIST, offset);
a94434b6	57	}
a94434b6	58
5c84b9a5 RW	59	struct ripng_offset_list ripng_offset_list_lookup(struct ripng ripng,
5c84b9a5 RW	60	const char *ifname)
a94434b6	61	{
d62a17ae	62	struct ripng_offset_list *offset;
d62a17ae	63	struct listnode node, nnode;
a94434b6	64
26c6be93 RW	65	for (ALL_LIST_ELEMENTS(ripng->offset_list_master, node, nnode,
26c6be93 RW	66	offset)) {
b09956ca	67	if (strcmp(offset->ifname, ifname) == 0)
d62a17ae	68	return offset;
	69	}
	70	return NULL;
a94434b6	71	}
a94434b6	72
eaf59d27	73	/* If metric is modified return 1. */
5c84b9a5 RW	74	int ripng_offset_list_apply_in(struct ripng ripng, struct prefix_ipv6 p,
5c84b9a5 RW	75	struct interface ifp, uint8_t metric)
a94434b6	76	{
d62a17ae	77	struct ripng_offset_list *offset;
	78	struct access_list *alist;
	79
	80	/* Look up offset-list with interface name. */
5c84b9a5	81	offset = ripng_offset_list_lookup(ripng, ifp->name);
d62a17ae	82	if (offset && OFFSET_LIST_IN_NAME(offset)) {
	83	alist = access_list_lookup(AFI_IP6,
	84	OFFSET_LIST_IN_NAME(offset));
	85
	86	if (alist
	87	&& access_list_apply(alist, (struct prefix *)p)
	88	== FILTER_PERMIT) {
	89	*metric += OFFSET_LIST_IN_METRIC(offset);
	90	return 1;
	91	}
	92	return 0;
a94434b6	93	}
d62a17ae	94	/* Look up offset-list without interface name. */
5c84b9a5	95	offset = ripng_offset_list_lookup(ripng, "*");
d62a17ae	96	if (offset && OFFSET_LIST_IN_NAME(offset)) {
	97	alist = access_list_lookup(AFI_IP6,
	98	OFFSET_LIST_IN_NAME(offset));
	99
	100	if (alist
	101	&& access_list_apply(alist, (struct prefix *)p)
	102	== FILTER_PERMIT) {
	103	*metric += OFFSET_LIST_IN_METRIC(offset);
	104	return 1;
	105	}
	106	return 0;
a94434b6	107	}
d62a17ae	108	return 0;
a94434b6	109	}
a94434b6	110
eaf59d27	111	/* If metric is modified return 1. */
5c84b9a5 RW	112	int ripng_offset_list_apply_out(struct ripng ripng, struct prefix_ipv6 p,
5c84b9a5 RW	113	struct interface ifp, uint8_t metric)
a94434b6	114	{
d62a17ae	115	struct ripng_offset_list *offset;
	116	struct access_list *alist;
	117
	118	/* Look up offset-list with interface name. */
5c84b9a5	119	offset = ripng_offset_list_lookup(ripng, ifp->name);
d62a17ae	120	if (offset && OFFSET_LIST_OUT_NAME(offset)) {
	121	alist = access_list_lookup(AFI_IP6,
	122	OFFSET_LIST_OUT_NAME(offset));
	123
	124	if (alist
	125	&& access_list_apply(alist, (struct prefix *)p)
	126	== FILTER_PERMIT) {
	127	*metric += OFFSET_LIST_OUT_METRIC(offset);
	128	return 1;
	129	}
	130	return 0;
a94434b6	131	}
d62a17ae	132
d62a17ae	133	/* Look up offset-list without interface name. */
5c84b9a5	134	offset = ripng_offset_list_lookup(ripng, "*");
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	return 0;
a94434b6	148	}
a94434b6	149
26c6be93	150	int offset_list_cmp(struct ripng_offset_list o1, struct ripng_offset_list o2)
a94434b6	151	{
b09956ca	152	return strcmp(o1->ifname, o2->ifname);
a94434b6	153	}