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authorWillem de Bruijn <willemb@google.com>2014-08-04 22:11:45 -0400
committerDavid S. Miller <davem@davemloft.net>2014-08-05 16:35:53 -0700
commitf24b9be5957b38bb420b838115040dc2031b7d0c (patch)
tree9fdb50bbe86f08ff9c012137fa854d45e156b8f9 /net/lapb
parenta2b81b35f9e5ade210e4df2001f7a30ac390114d (diff)
net-timestamp: extend SCM_TIMESTAMPING ancillary data struct
Applications that request kernel tx timestamps with SO_TIMESTAMPING read timestamps as recvmsg() ancillary data. The response is defined implicitly as timespec[3]. 1) define struct scm_timestamping explicitly and 2) add support for new tstamp types. On tx, scm_timestamping always accompanies a sock_extended_err. Define previously unused field ee_info to signal the type of ts[0]. Introduce SCM_TSTAMP_SND to define the existing behavior. The reception path is not modified. On rx, no struct similar to sock_extended_err is passed along with SCM_TIMESTAMPING. Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/lapb')
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