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getsockopt.2: clarify that SO_TIMESTAMP is not 100% reliable

Description

getsockopt.2: clarify that SO_TIMESTAMP is not 100% reliable

When SO_TIMESTAMP is set, the kernel will attempt to attach a timestamp as
ancillary data to each IP datagram that is received on the socket. However,
it may fail, for example due to insufficient memory. In that case the
packet will still be received but not timestamp will be attached.

Reviewed by: kib
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D21607

Details

Committed
asomersSep 11 2019, 7:48 PM
Reviewer
kib
Differential Revision
D21607: getsockopt.2: clarify that SO_TIMESTAMP is not 100% reliable
Parents
rS352230: fusefs: Fix iosize for FUSE_WRITE in 7.8 compat mode
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