Function key_freesav

freebsd/netipsec/key.c:1343–1357

* Must be called after calling key_allocsa(). * This function is called by key_freesp() to free some SA allocated * for a policy. */

 * for a policy.
 */
void
key_freesav(struct secasvar **psav)
{
	struct secasvar *sav = *psav;

	IPSEC_ASSERT(sav != NULL, ("null sav"));
	if (SAV_DELREF(sav) == 0)
		return;

	KEYDBG(IPSEC_STAMP,
	    printf("%s: last reference to SA(%p)\n", __func__, sav));

	*psav = NULL;
	key_delsav(sav);
}

/*
 * Unlink SA from SAH and SPI hash under SAHTREE_WLOCK.