void
vr_htable_release_hentry(vr_htable_t htable, vr_hentry_t *ent)
{
unsigned int cpu_num, delete_index;
struct vr_hentry_delete_data *delete_data;
vr_hentry_t *head_ent;
struct vr_htable *table = (struct vr_htable *)htable;
if (!(ent->hentry_flags & VR_HENTRY_FLAG_VALID))
return;
(void)__sync_sub_and_fetch(&table->ht_used_entries, 1);
/* Mark it as Invalid */
ent->hentry_flags &= ~VR_HENTRY_FLAG_VALID;
if (ent->hentry_index < table->ht_hentries)
return;
if (vr_not_ready)
return;
ent->hentry_flags |= VR_HENTRY_FLAG_DELETE_MARKED;
head_ent = __vr_htable_get_hentry_by_index(htable, ent->hentry_bucket_index);
delete_index = head_ent->hentry_index / table->ht_bucket_size;
delete_data = vr_btable_get(table->ht_dtable, delete_index);
(void)__sync_add_and_fetch(&delete_data->hd_count, 1);
/* Schedule the deltion only if it is not already scheduled */
if (__sync_bool_compare_and_swap(&delete_data->hd_scheduled, 0, 1)) {
delete_data->hd_table = (struct vr_htable *)htable;
delete_data->hd_index = head_ent->hentry_index;
/* Schedule the deletion on a cpu based on bucket index */
cpu_num = head_ent->hentry_index % vr_num_cpus;
if (vr_schedule_work(cpu_num, vr_htable_hentry_scheduled_delete,
(void *)delete_data)) {
/*
* We can only write back the status as not scheduled. There
* might be some entries that get marked as Deleted, but
* would not be pushed to free list as work queue is not
* scheduled. These marked entries would be deleted only if
* this hash bucket is revisisted
*/
(void)__sync_bool_compare_and_swap(&delete_data->hd_scheduled,1, 0);
}
}
return;
}
static int
vr_flow_schedule_transition(struct vrouter *router, vr_flow_req *req,
struct vr_flow_entry *fe)
{
struct vr_flow_md *flmd = NULL;
flmd = (struct vr_flow_md *)vr_malloc(sizeof(*flmd));
if (!flmd)
return -ENOMEM;
flmd->flmd_router = router;
flmd->flmd_index = req->fr_index;
flmd->flmd_action = req->fr_action;
flmd->flmd_flags = req->fr_flags;
vr_schedule_work(vr_get_cpu(), vr_flow_flush, (void *)flmd);
return 0;
}
void
vr_htable_release_hentry(vr_htable_t htable, vr_hentry_t *ent)
{
unsigned int cpu_num, delete_index;
struct vr_hentry_delete_data *delete_data;
vr_hentry_t *head_ent;
struct vr_htable *table = (struct vr_htable *)htable;
if (!(ent->hentry_flags & VR_HENTRY_FLAG_VALID))
return;
/* Mark it as Invalid */
ent->hentry_flags &= ~VR_HENTRY_FLAG_VALID;
if (ent->hentry_index < table->ht_hentries)
return;
if (vr_not_ready) {
__vr_htable_oentry_invalidate(table, ent);
return;
}
ent->hentry_flags |= VR_HENTRY_FLAG_DELETE_MARKED;
head_ent = __vr_htable_get_hentry_by_index(htable, ent->hentry_bucket_index);
delete_index = head_ent->hentry_index / table->ht_bucket_size;
delete_data = vr_btable_get(table->ht_dtable, delete_index);
/* Schedule the deltion only if it is not already scheduled */
if (__sync_add_and_fetch(&delete_data->hd_scheduled, 1) == 1) {
delete_data->hd_table = (struct vr_htable *)htable;
delete_data->hd_index = head_ent->hentry_index;
/* Schedule the deletion on a cpu based on bucket index */
cpu_num = head_ent->hentry_index % vr_num_cpus;
vr_schedule_work(cpu_num, vr_htable_hentry_scheduled_delete,
(void *)delete_data);
}
return;
}
