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ip: support for TX timestamps on UDP and RAW sockets

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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>
This commit is contained in:
Patrick Ohly
2009-02-12 05:03:39 +00:00
committed by David S. Miller
parent 20d4947353
commit 51f31cabe3
7 changed files with 19 additions and 0 deletions
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Documentation/networking/timestamping.txt
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@@ -56,6 +56,8 @@ and including the link layer, the scm_timestamping control message and
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