ip: support for TX timestamps on UDP and RAW sockets
Instructions for time stamping outgoing packets are take from the
socket layer and later copied into the new skb.
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/Documentation/networking/timestamping.txt b/Documentation/networking/timestamping.txt
index a681a65..0e58b45 100644
--- a/Documentation/networking/timestamping.txt
+++ b/Documentation/networking/timestamping.txt
@@ -56,6 +56,8 @@
a sock_extended_err control message with ee_errno==ENOMSG and
ee_origin==SO_EE_ORIGIN_TIMESTAMPING. A socket with such a pending
bounced packet is ready for reading as far as select() is concerned.
+If the outgoing packet has to be fragmented, then only the first
+fragment is time stamped and returned to the sending socket.
All three values correspond to the same event in time, but were
generated in different ways. Each of these values may be empty (= all
