[NET]: Adding SO_TIMESTAMPNS / SCM_TIMESTAMPNS support
Now that network timestamps use ktime_t infrastructure, we can add a new
SOL_SOCKET sockopt SO_TIMESTAMPNS.
This command is similar to SO_TIMESTAMP, but permits transmission of
a 'timespec struct' instead of a 'timeval struct' control message.
(nanosecond resolution instead of microsecond)
Control message is labelled SCM_TIMESTAMPNS instead of SCM_TIMESTAMP
A socket cannot mix SO_TIMESTAMP and SO_TIMESTAMPNS : the two modes are
mutually exclusive.
sock_recv_timestamp() became too big to be fully inlined so I added a
__sock_recv_timestamp() helper function.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
CC: linux-arch@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/asm-s390/socket.h b/include/asm-s390/socket.h
index 1778a49..1161ebe 100644
--- a/include/asm-s390/socket.h
+++ b/include/asm-s390/socket.h
@@ -57,5 +57,7 @@
#define SO_PEERSEC 31
#define SO_PASSSEC 34
+#define SO_TIMESTAMPNS 35
+#define SCM_TIMESTAMPNS SO_TIMESTAMPNS
#endif /* _ASM_SOCKET_H */
