Function mlx4_intr_install

dpdk/drivers/net/mlx4/mlx4_intr.c:287–312

* Install interrupt handler. * * @param priv * Pointer to private structure. * * @return * 0 on success, negative errno value otherwise and rte_errno is set. */

 *   0 on success, negative errno value otherwise and rte_errno is set.
 */
int
mlx4_intr_install(struct mlx4_priv *priv)
{
	const struct rte_eth_intr_conf *const intr_conf =
		&ETH_DEV(priv)->data->dev_conf.intr_conf;
	int rc;

	mlx4_intr_uninstall(priv);
	if (intr_conf->lsc | intr_conf->rmv) {
		if (rte_intr_fd_set(priv->intr_handle, priv->ctx->async_fd))
			return -rte_errno;

		rc = rte_intr_callback_register(priv->intr_handle,
						(void (*)(void *))
						mlx4_interrupt_handler,
						priv);
		if (rc < 0) {
			rte_errno = -rc;
			goto error;
		}
	}
	return 0;
error:
	mlx4_intr_uninstall(priv);
	return -rte_errno;
}

/**
 * DPDK callback for Rx queue interrupt disable.