[dpdk-dev] [RFC PATCH 5/5] virtio: Extend virtio-net PMD to support container environment

[Xie, Huawei]

On 1/21/2016 7:09 PM, Tetsuya Mukawa wrote:
> +static void
> +qtest_handle_one_message(struct qtest_session *s, char *buf)
> +{
> +	int ret;
> +
> +	if (strncmp(buf, interrupt_message, strlen(interrupt_message)) == 0) {
> +		if (rte_atomic16_read(&s->enable_intr) == 0)
> +			return;
> +
> +		/* relay interrupt to pipe */
> +		ret = write(s->irqfds.writefd, "1", 1);

How about the interrupt latency? Seems it is quite long.

> +		if (ret < 0)
> +			rte_panic("cannot relay interrupt\n");
> +	} else {
> +		/* relay normal message to pipe */
> +		ret = qtest_raw_send(s->msgfds.writefd, buf, strlen(buf));
> +		if (ret < 0)
> +			rte_panic("cannot relay normal message\n");
> +	}
> +}