net: socket infrastructure for SO_TIMESTAMPING
The overlap with the old SO_TIMESTAMP[NS] options is handled so
that time stamping in software (net_enable_timestamp()) is
enabled when SO_TIMESTAMP[NS] and/or SO_TIMESTAMPING_RX_SOFTWARE
is set. It's disabled if all of these are off.
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/compat.c b/net/compat.c
index a3a2ba0..8d73905 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -216,7 +216,7 @@
int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
{
struct compat_timeval ctv;
- struct compat_timespec cts;
+ struct compat_timespec cts[3];
struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
struct compat_cmsghdr cmhdr;
int cmlen;
@@ -233,12 +233,17 @@
data = &ctv;
len = sizeof(ctv);
}
- if (level == SOL_SOCKET && type == SCM_TIMESTAMPNS) {
+ if (level == SOL_SOCKET &&
+ (type == SCM_TIMESTAMPNS || type == SCM_TIMESTAMPING)) {
+ int count = type == SCM_TIMESTAMPNS ? 1 : 3;
+ int i;
struct timespec *ts = (struct timespec *)data;
- cts.tv_sec = ts->tv_sec;
- cts.tv_nsec = ts->tv_nsec;
+ for (i = 0; i < count; i++) {
+ cts[i].tv_sec = ts[i].tv_sec;
+ cts[i].tv_nsec = ts[i].tv_nsec;
+ }
data = &cts;
- len = sizeof(cts);
+ len = sizeof(cts[0]) * count;
}
cmlen = CMSG_COMPAT_LEN(len);
@@ -455,7 +460,7 @@
struct timeval tv;
if (!sock_flag(sk, SOCK_TIMESTAMP))
- sock_enable_timestamp(sk);
+ sock_enable_timestamp(sk, SOCK_TIMESTAMP);
tv = ktime_to_timeval(sk->sk_stamp);
if (tv.tv_sec == -1)
return err;
@@ -479,7 +484,7 @@
struct timespec ts;
if (!sock_flag(sk, SOCK_TIMESTAMP))
- sock_enable_timestamp(sk);
+ sock_enable_timestamp(sk, SOCK_TIMESTAMP);
ts = ktime_to_timespec(sk->sk_stamp);
if (ts.tv_sec == -1)
return err;