[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, 6 insertions, 0 deletions

diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index bf9837dd95c4..a54e7ef2568a 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -1209,6 +1209,12 @@ static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 release_sock(sk);
                 return ret;
 
+        case SIOCGSTAMPNS:
+                lock_sock(sk);
+                ret = sock_get_timestampns(sk, argp);
+                release_sock(sk);
+                return ret;
+
         case SIOCGIFADDR:
         case SIOCSIFADDR:
         case SIOCGIFDSTADDR: