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Diffstat (limited to 'Documentation/networking/timestamping.rst')
| -rw-r--r-- | Documentation/networking/timestamping.rst | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/networking/timestamping.rst b/Documentation/networking/timestamping.rst index f17c01834a12..5e93cd71f99f 100644 --- a/Documentation/networking/timestamping.rst +++ b/Documentation/networking/timestamping.rst @@ -357,7 +357,8 @@ enabling SOF_TIMESTAMPING_OPT_ID and comparing the byte offset at send time with the value returned for each timestamp. It can prevent the situation by always flushing the TCP stack in between requests, for instance by enabling TCP_NODELAY and disabling TCP_CORK and -autocork. +autocork. After linux-4.7, a better way to prevent coalescing is +to use MSG_EOR flag at sendmsg() time. These precautions ensure that the timestamp is generated only when all bytes have passed a timestamp point, assuming that the network stack |