Function mlx4_alloc_verbs_buf

dpdk/drivers/net/mlx4/mlx4.c:148–171

* Verbs callback to allocate a memory. This function should allocate the space * according to the size provided residing inside a huge page. * Please note that all allocation must respect the alignment from libmlx4 * (i.e. currently sysconf(_SC_PAGESIZE)). * * @param[in] size * The size in bytes of the memory to allocate. * @param[in] data * A pointer to the callback data. * * @retur

 *   Allocated buffer, NULL otherwise and rte_errno is set.
 */
static void *
mlx4_alloc_verbs_buf(size_t size, void *data)
{
	struct mlx4_priv *priv = data;
	void *ret;
	size_t alignment = sysconf(_SC_PAGESIZE);
	unsigned int socket = SOCKET_ID_ANY;

	if (priv->verbs_alloc_ctx.type == MLX4_VERBS_ALLOC_TYPE_TX_QUEUE) {
		const struct txq *txq = priv->verbs_alloc_ctx.obj;

		socket = txq->socket;
	} else if (priv->verbs_alloc_ctx.type ==
		   MLX4_VERBS_ALLOC_TYPE_RX_QUEUE) {
		const struct rxq *rxq = priv->verbs_alloc_ctx.obj;

		socket = rxq->socket;
	}
	MLX4_ASSERT(data != NULL);
	ret = rte_malloc_socket(__func__, size, alignment, socket);
	if (!ret && size)
		rte_errno = ENOMEM;
	return ret;
}

/**
 * Verbs callback to free a memory.