Correct 0 is supposed to indicate an error. That function may be incorrect for your platform. I think that function is used to help determine the granularity to use when determine how long it took for packets to make their trip over the network and back.
-Jaben > -----Original Message----- > From: Ooi, Tzy Way > Sent: Thursday, March 21, 2019 5:20 AM > To: Carsey, Jaben <[email protected]>; Ni, Ray <[email protected]>; > [email protected] > Cc: Loh, Tien Hock <[email protected]>; Ooi, Tzy Way > <[email protected]> > Subject: Enquiry on GetTimerPeriod function in Ping.c > > Hi, > > I am enabling an UEFI ethernet driver in our platform. While I tried to > test the driver with ping command, I noticed that ping operation is > aborted due to the GetTimerPeriod function return a value 0. > > In the function GetTimerPeriod in ping.c, the function will return the > value of StallCounter/RttTimerTick once it completed all the > operations. However, the value return in my platform is zero due to > StallCounter is having smaller value than RttTimerTick. > > I am not sure what is the usage of GetTimerPeriod function and how it > works. The GetTimerPeriod function will return 0 if any of the > operation having an error during the execution. However, I suspect that > this function should not return 0 when StallCounter is having less > value than RttTimerTick? This is because the function actually did not > encounter any error. Please correct me if I m wrong. > > Thank you > > Best regards, > Tzy Way _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
