Commit ae40eb1e authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

[NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution 



Now network timestamps use ktime_t infrastructure, we can add a new
ioctl() SIOCGSTAMPNS command to get timestamps in 'struct timespec'.
User programs can thus access to nanosecond resolution.

Signed-off-by: default avatarEric Dumazet <dada1@cosmosbay.com>
CC: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cb69cc52

fs/compat_ioctl.c

+18 −0
Original line number Diff line number Diff line
@@ -266,6 +266,23 @@ static int do_siocgstamp(unsigned int fd, unsigned int cmd, unsigned long arg) 
	return err;

}



static int do_siocgstampns(unsigned int fd, unsigned int cmd, unsigned long arg)

{

	struct compat_timespec __user *up = compat_ptr(arg);

	struct timespec kts;

	mm_segment_t old_fs = get_fs();

	int err;



	set_fs(KERNEL_DS);

	err = sys_ioctl(fd, cmd, (unsigned long)&kts);

	set_fs(old_fs);

	if (!err) {

		err = put_user(kts.tv_sec, &up->tv_sec);

		err |= __put_user(kts.tv_nsec, &up->tv_nsec);

	}

	return err;

}



struct ifmap32 {

	compat_ulong_t mem_start;

	compat_ulong_t mem_end;
@@ -2437,6 +2454,7 @@ HANDLE_IOCTL(SIOCBRDELIF, dev_ifsioc) 
/* Note SIOCRTMSG is no longer, so this is safe and * the user would have seen just an -EINVAL anyways. */

HANDLE_IOCTL(SIOCRTMSG, ret_einval)

HANDLE_IOCTL(SIOCGSTAMP, do_siocgstamp)

HANDLE_IOCTL(SIOCGSTAMPNS, do_siocgstampns)

#endif

#ifdef CONFIG_BLOCK

HANDLE_IOCTL(HDIO_GETGEO, hdio_getgeo)

include/asm-alpha/sockios.h

+2 −1
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
#define SIOCSPGRP	_IOW('s', 8, pid_t)

#define SIOCGPGRP	_IOR('s', 9, pid_t)



#define SIOCGSTAMP	0x8906		/* Get stamp - linux-specific */

#define SIOCGSTAMP	0x8906		/* Get stamp (timeval) */

#define SIOCGSTAMPNS	0x8907		/* Get stamp (timespec) */



#endif /* _ASM_ALPHA_SOCKIOS_H */

include/asm-arm/sockios.h

+2 −1
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
#define FIOGETOWN	0x8903

#define SIOCGPGRP	0x8904

#define SIOCATMARK	0x8905

#define SIOCGSTAMP	0x8906		/* Get stamp */

#define SIOCGSTAMP	0x8906		/* Get stamp (timeval) */

#define SIOCGSTAMPNS	0x8907		/* Get stamp (timespec) */



#endif

include/asm-arm26/sockios.h

+2 −1
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
#define FIOGETOWN	0x8903

#define SIOCGPGRP	0x8904

#define SIOCATMARK	0x8905

#define SIOCGSTAMP	0x8906		/* Get stamp */

#define SIOCGSTAMP	0x8906		/* Get stamp (timeval) */

#define SIOCGSTAMPNS	0x8907		/* Get stamp (timespec) */



#endif

include/asm-avr32/sockios.h

+2 −1
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
#define FIOGETOWN	0x8903

#define SIOCGPGRP	0x8904

#define SIOCATMARK	0x8905

#define SIOCGSTAMP	0x8906		/* Get stamp */

#define SIOCGSTAMP	0x8906		/* Get stamp (timeval) */

#define SIOCGSTAMPNS	0x8907		/* Get stamp (timespec) */



#endif /* __ASM_AVR32_SOCKIOS_H */

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