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// SPDX-License-Identifier: GPL-2.0-or-later
#include "zebra.h"
#include "hash.h"
#include "nhrpd.h"
static unsigned int nhrp_reqid_key(const void *data)
{
const struct nhrp_reqid *r = data;
return r->request_id;
}
static bool nhrp_reqid_cmp(const void *data, const void *key)
{
const struct nhrp_reqid *a = data, *b = key;
return a->request_id == b->request_id;
}
uint32_t nhrp_reqid_alloc(struct nhrp_reqid_pool *p, struct nhrp_reqid *r,
void (*cb)(struct nhrp_reqid *, void *))
{
if (!p->reqid_hash) {
p->reqid_hash = hash_create(nhrp_reqid_key, nhrp_reqid_cmp,
"NHRP reqid Hash");
p->next_request_id = 1;
}
if (r->cb != cb) {
r->request_id = p->next_request_id;
if (++p->next_request_id == 0)
p->next_request_id = 1;
r->cb = cb;
(void)hash_get(p->reqid_hash, r, hash_alloc_intern);
}
return r->request_id;
}
void nhrp_reqid_free(struct nhrp_reqid_pool *p, struct nhrp_reqid *r)
{
if (r->cb) {
hash_release(p->reqid_hash, r);
r->cb = NULL;
}
}
struct nhrp_reqid *nhrp_reqid_lookup(struct nhrp_reqid_pool *p, uint32_t reqid)
{
struct nhrp_reqid key;
if (!p->reqid_hash)
return 0;
key.request_id = reqid;
return hash_lookup(p->reqid_hash, &key);
}
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