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// SPDX-License-Identifier: GPL-2.0-or-later
/* route-map for interface.
* Copyright (C) 1999 Kunihiro Ishiguro
*/
#include <zebra.h>
#include "hash.h"
#include "command.h"
#include "memory.h"
#include "if.h"
#include "if_rmap.h"
#include "ripd/ripd.h"
DEFINE_MTYPE_STATIC(LIB, IF_RMAP_CTX, "Interface route map container");
DEFINE_MTYPE_STATIC(LIB, IF_RMAP_CTX_NAME,
"Interface route map container name");
DEFINE_MTYPE_STATIC(LIB, IF_RMAP, "Interface route map");
DEFINE_MTYPE_STATIC(LIB, IF_RMAP_NAME, "I.f. route map name");
static struct list *if_rmap_ctx_list;
static struct if_rmap *if_rmap_new(void)
{
struct if_rmap *new;
new = XCALLOC(MTYPE_IF_RMAP, sizeof(struct if_rmap));
return new;
}
static void if_rmap_free(struct if_rmap *if_rmap)
{
XFREE(MTYPE_IF_RMAP_NAME, if_rmap->ifname);
XFREE(MTYPE_IF_RMAP_NAME, if_rmap->routemap[IF_RMAP_IN]);
XFREE(MTYPE_IF_RMAP_NAME, if_rmap->routemap[IF_RMAP_OUT]);
XFREE(MTYPE_IF_RMAP, if_rmap);
}
struct if_rmap *if_rmap_lookup(struct if_rmap_ctx *ctx, const char *ifname)
{
struct if_rmap key;
struct if_rmap *if_rmap;
/* temporary copy */
key.ifname = (ifname) ? XSTRDUP(MTYPE_IF_RMAP_NAME, ifname) : NULL;
if_rmap = hash_lookup(ctx->ifrmaphash, &key);
XFREE(MTYPE_IF_RMAP_NAME, key.ifname);
return if_rmap;
}
void if_rmap_hook_add(struct if_rmap_ctx *ctx,
void (*func)(struct if_rmap_ctx *ctx,
struct if_rmap *))
{
ctx->if_rmap_add_hook = func;
}
void if_rmap_hook_delete(struct if_rmap_ctx *ctx,
void (*func)(struct if_rmap_ctx *ctx,
struct if_rmap *))
{
ctx->if_rmap_delete_hook = func;
}
static void *if_rmap_hash_alloc(void *arg)
{
struct if_rmap *ifarg = (struct if_rmap *)arg;
struct if_rmap *if_rmap;
if_rmap = if_rmap_new();
if_rmap->ifname = XSTRDUP(MTYPE_IF_RMAP_NAME, ifarg->ifname);
return if_rmap;
}
static struct if_rmap *if_rmap_get(struct if_rmap_ctx *ctx, const char *ifname)
{
struct if_rmap key;
struct if_rmap *ret;
/* temporary copy */
key.ifname = (ifname) ? XSTRDUP(MTYPE_IF_RMAP_NAME, ifname) : NULL;
ret = hash_get(ctx->ifrmaphash, &key, if_rmap_hash_alloc);
XFREE(MTYPE_IF_RMAP_NAME, key.ifname);
return ret;
}
static unsigned int if_rmap_hash_make(const void *data)
{
const struct if_rmap *if_rmap = data;
return string_hash_make(if_rmap->ifname);
}
static bool if_rmap_hash_cmp(const void *arg1, const void *arg2)
{
const struct if_rmap *if_rmap1 = arg1;
const struct if_rmap *if_rmap2 = arg2;
return strcmp(if_rmap1->ifname, if_rmap2->ifname) == 0;
}
static struct if_rmap *if_rmap_set(struct if_rmap_ctx *ctx,
const char *ifname, enum if_rmap_type type,
const char *routemap_name)
{
struct if_rmap *if_rmap;
if_rmap = if_rmap_get(ctx, ifname);
if (type == IF_RMAP_IN) {
XFREE(MTYPE_IF_RMAP_NAME, if_rmap->routemap[IF_RMAP_IN]);
if_rmap->routemap[IF_RMAP_IN] =
XSTRDUP(MTYPE_IF_RMAP_NAME, routemap_name);
}
if (type == IF_RMAP_OUT) {
XFREE(MTYPE_IF_RMAP_NAME, if_rmap->routemap[IF_RMAP_OUT]);
if_rmap->routemap[IF_RMAP_OUT] =
XSTRDUP(MTYPE_IF_RMAP_NAME, routemap_name);
}
if (ctx->if_rmap_add_hook)
(ctx->if_rmap_add_hook)(ctx, if_rmap);
return if_rmap;
}
static int if_rmap_unset(struct if_rmap_ctx *ctx,
const char *ifname, enum if_rmap_type type,
const char *routemap_name)
{
struct if_rmap *if_rmap;
if_rmap = if_rmap_lookup(ctx, ifname);
if (!if_rmap)
return 0;
if (type == IF_RMAP_IN) {
if (!if_rmap->routemap[IF_RMAP_IN])
return 0;
if (strcmp(if_rmap->routemap[IF_RMAP_IN], routemap_name) != 0)
return 0;
XFREE(MTYPE_IF_RMAP_NAME, if_rmap->routemap[IF_RMAP_IN]);
}
if (type == IF_RMAP_OUT) {
if (!if_rmap->routemap[IF_RMAP_OUT])
return 0;
if (strcmp(if_rmap->routemap[IF_RMAP_OUT], routemap_name) != 0)
return 0;
XFREE(MTYPE_IF_RMAP_NAME, if_rmap->routemap[IF_RMAP_OUT]);
}
if (ctx->if_rmap_delete_hook)
ctx->if_rmap_delete_hook(ctx, if_rmap);
if (if_rmap->routemap[IF_RMAP_IN] == NULL
&& if_rmap->routemap[IF_RMAP_OUT] == NULL) {
hash_release(ctx->ifrmaphash, if_rmap);
if_rmap_free(if_rmap);
}
return 1;
}
DEFUN (if_rmap,
if_rmap_cmd,
"route-map RMAP_NAME <in|out> IFNAME",
"Route map set\n"
"Route map name\n"
"Route map set for input filtering\n"
"Route map set for output filtering\n"
"Route map interface name\n")
{
int idx_rmap_name = 1;
int idx_in_out = 2;
int idx_ifname = 3;
enum if_rmap_type type;
struct if_rmap_ctx *ctx;
const struct lyd_node *dnode;
struct rip *rip;
dnode = yang_dnode_get(running_config->dnode, VTY_CURR_XPATH);
rip = nb_running_get_entry(dnode, NULL, true);
ctx = rip->if_rmap_ctx;
if (strncmp(argv[idx_in_out]->text, "in", 1) == 0)
type = IF_RMAP_IN;
else if (strncmp(argv[idx_in_out]->text, "out", 1) == 0)
type = IF_RMAP_OUT;
else {
vty_out(vty, "route-map direction must be [in|out]\n");
return CMD_WARNING_CONFIG_FAILED;
}
if_rmap_set(ctx, argv[idx_ifname]->arg,
type, argv[idx_rmap_name]->arg);
return CMD_SUCCESS;
}
DEFUN (no_if_rmap,
no_if_rmap_cmd,
"no route-map ROUTEMAP_NAME <in|out> IFNAME",
NO_STR
"Route map unset\n"
"Route map name\n"
"Route map for input filtering\n"
"Route map for output filtering\n"
"Route map interface name\n")
{
int idx_routemap_name = 2;
int idx_in_out = 3;
int idx_ifname = 4;
int ret;
enum if_rmap_type type;
struct if_rmap_ctx *ctx =
(struct if_rmap_ctx *)listnode_head(if_rmap_ctx_list);
if (strncmp(argv[idx_in_out]->arg, "i", 1) == 0)
type = IF_RMAP_IN;
else if (strncmp(argv[idx_in_out]->arg, "o", 1) == 0)
type = IF_RMAP_OUT;
else {
vty_out(vty, "route-map direction must be [in|out]\n");
return CMD_WARNING_CONFIG_FAILED;
}
ret = if_rmap_unset(ctx, argv[idx_ifname]->arg, type,
argv[idx_routemap_name]->arg);
if (!ret) {
vty_out(vty, "route-map doesn't exist\n");
return CMD_WARNING_CONFIG_FAILED;
}
return CMD_SUCCESS;
}
/* Configuration write function. */
int config_write_if_rmap(struct vty *vty,
struct if_rmap_ctx *ctx)
{
unsigned int i;
struct hash_bucket *mp;
int write = 0;
struct hash *ifrmaphash = ctx->ifrmaphash;
for (i = 0; i < ifrmaphash->size; i++)
for (mp = ifrmaphash->index[i]; mp; mp = mp->next) {
struct if_rmap *if_rmap;
if_rmap = mp->data;
if (if_rmap->routemap[IF_RMAP_IN]) {
vty_out(vty, " route-map %s in %s\n",
if_rmap->routemap[IF_RMAP_IN],
if_rmap->ifname);
write++;
}
if (if_rmap->routemap[IF_RMAP_OUT]) {
vty_out(vty, " route-map %s out %s\n",
if_rmap->routemap[IF_RMAP_OUT],
if_rmap->ifname);
write++;
}
}
return write;
}
void if_rmap_ctx_delete(struct if_rmap_ctx *ctx)
{
listnode_delete(if_rmap_ctx_list, ctx);
hash_clean_and_free(&ctx->ifrmaphash, (void (*)(void *))if_rmap_free);
if (ctx->name)
XFREE(MTYPE_IF_RMAP_CTX_NAME, ctx);
XFREE(MTYPE_IF_RMAP_CTX, ctx);
}
/* name is optional: either vrf name, or other */
struct if_rmap_ctx *if_rmap_ctx_create(const char *name)
{
struct if_rmap_ctx *ctx;
ctx = XCALLOC(MTYPE_IF_RMAP_CTX, sizeof(struct if_rmap_ctx));
ctx->name = XSTRDUP(MTYPE_IF_RMAP_CTX_NAME, name);
ctx->ifrmaphash = hash_create_size(4, if_rmap_hash_make, if_rmap_hash_cmp,
"Interface Route-Map Hash");
if (!if_rmap_ctx_list)
if_rmap_ctx_list = list_new();
listnode_add(if_rmap_ctx_list, ctx);
return ctx;
}
void if_rmap_init(int node)
{
if (node == RIPNG_NODE) {
} else if (node == RIP_NODE) {
install_element(RIP_NODE, &if_rmap_cmd);
install_element(RIP_NODE, &no_if_rmap_cmd);
}
if_rmap_ctx_list = list_new();
}
void if_rmap_terminate(void)
{
if (!if_rmap_ctx_list)
return;
list_delete(&if_rmap_ctx_list);
}
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