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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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63502b8d01
When timestamping received packets, rx_timestamp_work may be scheduled before the timestamps is received from the hardware resulting in the packet beeing delivered without the timestamp. This is fixed by changing the receive timestamp path: On receiving a packet that need timestamping, the rxts list is traversed. If a match is found, packet+timestamp are delivered, otherwise the packet is added to a rx_queue. When a timestamp arrives rx_queue is traversed and if a matching packet is found, it is delivered with the timestamp. Otherwise the timestamp is added to the rxts list for matching with packets arriving later. In case the hardware drops a timestamp, a workqueue regularly checks the queue for old packets and delivers them without a timestamp. Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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