Michael Tuexen 3cca425b29 Add a IP_RECVTOS socket option to receive for received UDP/IPv4
packets a cmsg of type IP_RECVTOS which contains the TOS byte.
Much like IP_RECVTTL does for TTL. This allows to implement a
protocol on top of UDP and implementing ECN.

MFC after: 3 days
2012-06-12 14:02:38 +00:00
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2012-05-18 20:34:08 +00:00
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