-struct txq_mp2mr_mbuf_check_data {
- int ret;
-};
-
-/**
- * Callback function for rte_mempool_obj_iter() to check whether a given
- * mempool object looks like a mbuf.
- *
- * @param[in] mp
- * The mempool pointer
- * @param[in] arg
- * Context data (struct mlx4_txq_mp2mr_mbuf_check_data). Contains the
- * return value.
- * @param[in] obj
- * Object address.
- * @param index
- * Object index, unused.
- */
-static void
-mlx4_txq_mp2mr_mbuf_check(struct rte_mempool *mp, void *arg, void *obj,
- uint32_t index)
-{
- struct txq_mp2mr_mbuf_check_data *data = arg;
- struct rte_mbuf *buf = obj;
-
- (void)index;
- /*
- * Check whether mbuf structure fits element size and whether mempool
- * pointer is valid.
- */
- if (sizeof(*buf) > mp->elt_size || buf->pool != mp)
- data->ret = -1;
-}
-
-/**
- * Iterator function for rte_mempool_walk() to register existing mempools and
- * fill the MP to MR cache of a Tx queue.
- *
- * @param[in] mp
- * Memory Pool to register.
- * @param *arg
- * Pointer to Tx queue structure.
- */
-static void
-mlx4_txq_mp2mr_iter(struct rte_mempool *mp, void *arg)
-{
- struct txq *txq = arg;
- struct txq_mp2mr_mbuf_check_data data = {
- .ret = 0,
- };
-
- /* Register mempool only if the first element looks like a mbuf. */
- if (rte_mempool_obj_iter(mp, mlx4_txq_mp2mr_mbuf_check, &data) == 0 ||
- data.ret == -1)
- return;
- mlx4_txq_mp2mr(txq, mp);
-}
-