[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>
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index c8b7dc2..32b8270 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1771,6 +1771,9 @@
case SIOCGSTAMP:
rc = sock_get_timestamp(sk, argp);
break;
+ case SIOCGSTAMPNS:
+ rc = sock_get_timestampns(sk, argp);
+ break;
/* Routing */
case SIOCADDRT:
case SIOCDELRT:
diff --git a/net/atm/ioctl.c b/net/atm/ioctl.c
index 8ccee45..7afd8e7 100644
--- a/net/atm/ioctl.c
+++ b/net/atm/ioctl.c
@@ -82,6 +82,9 @@
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printk(KERN_WARNING "ATM_SETSC is obsolete\n");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;
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index 1c07c6a..62605dc5a 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1711,6 +1711,10 @@
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: {
diff --git a/net/compat.c b/net/compat.c
index 17c2710..2fc6d9b 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -564,6 +564,30 @@
}
EXPORT_SYMBOL(compat_sock_get_timestamp);
+int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
+{
+ struct compat_timespec __user *ctv =
+ (struct compat_timespec __user*) userstamp;
+ int err = -ENOENT;
+ struct timespec ts;
+
+ if (!sock_flag(sk, SOCK_TIMESTAMP))
+ sock_enable_timestamp(sk);
+ ts = ktime_to_timespec(sk->sk_stamp);
+ if (ts.tv_sec == -1)
+ return err;
+ if (ts.tv_sec == 0) {
+ sk->sk_stamp = ktime_get_real();
+ ts = ktime_to_timespec(sk->sk_stamp);
+ }
+ err = 0;
+ if (put_user(ts.tv_sec, &ctv->tv_sec) ||
+ put_user(ts.tv_nsec, &ctv->tv_nsec))
+ err = -EFAULT;
+ return err;
+}
+EXPORT_SYMBOL(compat_sock_get_timestampns);
+
asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
char __user *optval, int __user *optlen)
{
diff --git a/net/core/sock.c b/net/core/sock.c
index 6ddb366..cb48fa0 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1567,6 +1567,22 @@
}
EXPORT_SYMBOL(sock_get_timestamp);
+int sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
+{
+ struct timespec ts;
+ if (!sock_flag(sk, SOCK_TIMESTAMP))
+ sock_enable_timestamp(sk);
+ ts = ktime_to_timespec(sk->sk_stamp);
+ if (ts.tv_sec == -1)
+ return -ENOENT;
+ if (ts.tv_sec == 0) {
+ sk->sk_stamp = ktime_get_real();
+ ts = ktime_to_timespec(sk->sk_stamp);
+ }
+ return copy_to_user(userstamp, &ts, sizeof(ts)) ? -EFAULT : 0;
+}
+EXPORT_SYMBOL(sock_get_timestampns);
+
void sock_enable_timestamp(struct sock *sk)
{
if (!sock_flag(sk, SOCK_TIMESTAMP)) {
diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c
index f573edd..487f879 100644
--- a/net/econet/af_econet.c
+++ b/net/econet/af_econet.c
@@ -727,6 +727,9 @@
case SIOCGSTAMP:
return sock_get_timestamp(sk, argp);
+ case SIOCGSTAMPNS:
+ return sock_get_timestampns(sk, argp);
+
case SIOCSIFADDR:
case SIOCGIFADDR:
return ec_dev_ioctl(sock, cmd, argp);
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index cf358c8..df41856 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -755,6 +755,9 @@
case SIOCGSTAMP:
err = sock_get_timestamp(sk, (struct timeval __user *)arg);
break;
+ case SIOCGSTAMPNS:
+ err = sock_get_timestampns(sk, (struct timespec __user *)arg);
+ break;
case SIOCADDRT:
case SIOCDELRT:
case SIOCRTMSG:
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index fed3758..2ff0704 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -443,6 +443,9 @@
case SIOCGSTAMP:
return sock_get_timestamp(sk, (struct timeval __user *)arg);
+ case SIOCGSTAMPNS:
+ return sock_get_timestampns(sk, (struct timespec __user *)arg);
+
case SIOCADDRT:
case SIOCDELRT:
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index bf9837d..a54e7ef 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -1209,6 +1209,12 @@
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:
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index f9866a8..6f8c72d 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1545,6 +1545,8 @@
}
case SIOCGSTAMP:
return sock_get_timestamp(sk, (struct timeval __user *)arg);
+ case SIOCGSTAMPNS:
+ return sock_get_timestampns(sk, (struct timespec __user *)arg);
#ifdef CONFIG_INET
case SIOCADDRT:
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index f92d531..f64be93 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -1296,6 +1296,9 @@
case SIOCGSTAMP:
return sock_get_timestamp(sk, (struct timeval __user *) argp);
+ case SIOCGSTAMPNS:
+ return sock_get_timestampns(sk, (struct timespec __user *) argp);
+
case SIOCGIFADDR:
case SIOCSIFADDR:
case SIOCGIFDSTADDR:
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index e62ba41..a198843 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -1280,6 +1280,12 @@
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 @@
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:
