Function tid_init

dpdk/drivers/net/cxgbe/cxgbe_main.c:482–529

* Allocate and initialize the TID tables. Returns 0 on success. */

 * Allocate and initialize the TID tables.  Returns 0 on success.
 */
static int tid_init(struct tid_info *t)
{
	size_t size;
	unsigned int ftid_bmap_size;
	unsigned int natids = t->natids;
	unsigned int max_ftids = t->nftids;

	ftid_bmap_size = rte_bitmap_get_memory_footprint(t->nftids);
	size = t->ntids * sizeof(*t->tid_tab) +
		max_ftids * sizeof(*t->ftid_tab) +
		natids * sizeof(*t->atid_tab);

	t->tid_tab = t4_os_alloc(size);
	if (!t->tid_tab)
		return -ENOMEM;

	t->atid_tab = (union aopen_entry *)&t->tid_tab[t->ntids];
	t->ftid_tab = (struct filter_entry *)&t->atid_tab[t->natids];
	t->ftid_bmap_array = t4_os_alloc(ftid_bmap_size);
	if (!t->ftid_bmap_array) {
		tid_free(t);
		return -ENOMEM;
	}

	t4_os_lock_init(&t->atid_lock);
	t4_os_lock_init(&t->ftid_lock);

	t->afree = NULL;
	t->atids_in_use = 0;
	t->tids_in_use = 0;
	t->conns_in_use = 0;

	/* Setup the free list for atid_tab and clear the stid bitmap. */
	if (natids) {
		while (--natids)
			t->atid_tab[natids - 1].next = &t->atid_tab[natids];
		t->afree = t->atid_tab;
	}

	t->ftid_bmap = rte_bitmap_init(t->nftids, t->ftid_bmap_array,
				       ftid_bmap_size);
	if (!t->ftid_bmap) {
		tid_free(t);
		return -ENOMEM;
	}

	return 0;
}

static inline void init_rspq(struct adapter *adap, struct sge_rspq *q,
		      unsigned int us, unsigned int cnt,