[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, 4 insertions, 0 deletions

diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index 1c07c6a50eb8..62605dc5a2c8 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1711,6 +1711,10 @@ static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 res = sock_get_timestamp(sk, argp);
                 break;
 
+        case SIOCGSTAMPNS:
+                res = sock_get_timestampns(sk, argp);
+                break;
+
         case SIOCAX25ADDUID:    /* Add a uid to the uid/call map table */
         case SIOCAX25DELUID:    /* Delete a uid from the uid/call map table */
         case SIOCAX25GETUID: {