Hi, > -----Original Message----- > From: Viacheslav Ovsiienko <[email protected]> > Sent: Thursday, April 20, 2023 11:19 AM > To: [email protected] > Subject: [PATCH] net/mlx5: add timestamp ascending order error statistics > > The ConnectX NICs support packet send scheduling on specified moment of > time. Application can set the desired timestamp value in dynamic mbuf field > and driver will push the special WAIT WQE to the hardware queue in order to > suspend the entire queue operations till the specified time moment, then PMD > pushes the regular WQE for packet sending. > > In the following packets the scheduling can be requested again, with different > timestamps, and driver pushes WAIT WQE accordingly. > The timestamps should be provided by application in ascending order as > packets are queued to the hardware queue, otherwise hardware would not be > able to perform scheduling correctly - it discovers the WAIT WQEs in order as > they were pushed, there is no any reordering - neither in PMD, not in the NIC, > and, obviously, the regular hardware can't work as time machine and wait for > some elapsed moment in the past. > > Signed-off-by: Viacheslav Ovsiienko <[email protected]>
Patch applied to next-net-mlx, Kindest regards, Raslan Darawsheh
