Attachment 1475947 Details for Bug 1616038 – daemon to enable timestamp on network sockets

daemon to enable timestamp on network sockets

enable-netsocket-tstamp-static-key.c (text/x-csrc), 969 bytes, created by Marcelo Tosatti on 2018-08-14 19:12:06 UTC

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Creator: Marcelo Tosatti

Created: 2018-08-14 19:12:06 UTC

Size: 969 bytes

patch

obsolete

>/*
> * Open a socket, and enable timestamping on it.
> * 
> * This is to avoid Chrony from changing timestamping 
> * user count from 0->1 and vice-versa, causing 
> * static key enable/disable IPIs.
> *
> */
>#include <sys/types.h>
>#include <sys/socket.h>
>#include <ifaddrs.h>
>#include <linux/errqueue.h>
>#include <linux/ethtool.h>
>#include <linux/net_tstamp.h>
>#include <linux/sockios.h>
>#include <net/if.h>
>#include <stdio.h>
>#include <unistd.h>
>#include <stdlib.h>
>
>int main (void)
>{
>	int option = SOF_TIMESTAMPING_OPT_TX_SWHW;
>	int sock_fd;
>	int ret;
>
>	sock_fd = socket(AF_INET, SOCK_DGRAM, 0);
>	if (sock_fd < 0) {
>		printf("Error opening the socket\n");
>		return 0;
>	}
>
>	if (setsockopt(sock_fd, SOL_SOCKET, SO_TIMESTAMP, &option, sizeof (option)) < 0) {
>		printf("Could not enable timestamping option %x", (unsigned int)option);
>		close(sock_fd);
>		return 0;
>	}
>
>	ret = daemon(0, 0);
>
>	if (ret == -1) {
>		perror("daemon");
>		exit(0);
>	}
>
>	while (1) {
>		sleep(1000);
>	}
>}

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Attachments on bug 1616038: 1475947