static void filter_rm_dtor(struct efrm_resource_manager *rm)
{
EFRM_TRACE("%s:", __func__);
EFRM_RESOURCE_MANAGER_ASSERT_VALID(&efrm_filter_manager->rm);
EFRM_ASSERT(&efrm_filter_manager->rm == rm);
kfifo_vfree(efrm_filter_manager->free_ids);
EFRM_TRACE("%s: done", __func__);
}
int
efrm_filter_resource_alloc(struct vi_resource *vi_parent,
struct filter_resource **frs_out)
{
struct filter_resource *frs;
int rc, instance;
EFRM_ASSERT(frs_out);
EFRM_ASSERT(efrm_filter_manager);
EFRM_RESOURCE_MANAGER_ASSERT_VALID(&efrm_filter_manager->rm);
EFRM_ASSERT(vi_parent != NULL);
EFRM_ASSERT(EFRM_RESOURCE_TYPE(vi_parent->rs.rs_handle) ==
EFRM_RESOURCE_VI);
/* Allocate resource data structure. This is called in atomic
* context by the onload driver.
*/
frs = kmalloc(sizeof(struct filter_resource), GFP_ATOMIC);
if (!frs)
return -ENOMEM;
/* Allocate an instance. */
rc = kfifo_get(efrm_filter_manager->free_ids,
(unsigned char *)&instance, sizeof(instance));
if (rc != sizeof(instance)) {
EFRM_TRACE("%s: out of instances", __FUNCTION__);
EFRM_ASSERT(rc == 0);
rc = -EBUSY;
goto fail1;
}
/* Initialise the resource DS. */
efrm_resource_init(&frs->rs, EFRM_RESOURCE_FILTER, instance);
frs->pt = vi_parent;
efrm_resource_ref(&frs->pt->rs);
frs->filter_idx = -1;
EFRM_TRACE("%s: " EFRM_RESOURCE_FMT " VI %d", __FUNCTION__,
EFRM_RESOURCE_PRI_ARG(frs->rs.rs_handle),
EFRM_RESOURCE_INSTANCE(vi_parent->rs.rs_handle));
efrm_client_add_resource(vi_parent->rs.rs_client, &frs->rs);
*frs_out = frs;
return 0;
fail1:
memset(frs, 0, sizeof(*frs));
kfree(frs);
return rc;
}