[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: Eric Dumazet <dada1@cosmosbay.com>
CC: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/atm/ioctl.c b/net/atm/ioctl.c
index 8ccee4591f65..7afd8e7754fd 100644
--- a/net/atm/ioctl.c
+++ b/net/atm/ioctl.c
@@ -82,6 +82,9 @@ int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 case SIOCGSTAMP: /* borrowed from IP */
                         error = sock_get_timestamp(sk, argp);
                         goto done;
+                case SIOCGSTAMPNS: /* borrowed from IP */
+                        error = sock_get_timestampns(sk, argp);
+                        goto done;
                 case ATM_SETSC:
                         printk(KERN_WARNING "ATM_SETSC is obsolete\n");
                         error = 0;