Re: [dpdk-dev] [PATCH] eal: add asynchronous request API to DPDK IPC

[Stephen Hemminger <stephen@networkplumber.org>]

On Tue, 27 Feb 2018 14:59:29 +0000
Anatoly Burakov <anatoly.burakov@intel.com> wrote:

> +rte_mp_request_async(struct rte_mp_msg *req, const struct timespec *ts)
>  {
> +	struct sync_request *dummy;
> +	struct async_request_shared_param *param = NULL;
> +	struct rte_mp_reply *reply = NULL;
> +	int dir_fd, ret = 0;
> +	DIR *mp_dir;
> +	struct dirent *ent;
> +	struct timeval now;
> +	struct timespec *end = NULL;
> +
> +	RTE_LOG(DEBUG, EAL, "request: %s\n", req->name);
> +
> +	if (check_input(req) == false)
> +		return -1;
> +	if (gettimeofday(&now, NULL) < 0) {
> +		RTE_LOG(ERR, EAL, "Faile to get current time\n");
> +		rte_errno = errno;
> +		return -1;
> +	}

gettimeofday is not a good API to use in DPDK.
It gets changed by NTP; if you have to use system time you want monotonic clock