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// 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);
}
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