[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, 12 insertions, 0 deletions

diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index e62ba41b05c5..a19884315622 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -1280,6 +1280,12 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                                 rc = sock_get_timestamp(sk,
                                                 (struct timeval __user *)argp);
                         break;
+                case SIOCGSTAMPNS:
+                        rc = -EINVAL;
+                        if (sk)
+                                rc = sock_get_timestampns(sk,
+                                                (struct timespec __user *)argp);
+                        break;
                 case SIOCGIFADDR:
                 case SIOCSIFADDR:
                 case SIOCGIFDSTADDR:
@@ -1521,6 +1527,12 @@ static int compat_x25_ioctl(struct socket *sock, unsigned int cmd,
                         rc = compat_sock_get_timestamp(sk,
                                         (struct timeval __user*)argp);
                 break;
+        case SIOCGSTAMPNS:
+                rc = -EINVAL;
+                if (sk)
+                        rc = compat_sock_get_timestampns(sk,
+                                        (struct timespec __user*)argp);
+                break;
         case SIOCGIFADDR:
         case SIOCSIFADDR:
         case SIOCGIFDSTADDR: