Arm development board, Linux system, wireless network card is raspberry pie is special, could you tell me how to program to realize data packets to the network card timestamp, is just to the network card timestamp, the error of the system directly read a bit big, want to increase 0.2 ms,,, the great god taught, genuflect is begged thank you

CodePudding user response:

This is expected to be nic driver ability

CodePudding user response:

Thank you teach, http://blog.csdn.net/jiang1013nan/article/details/19041225 said the content, please get the timestamp of the do not know and timestamp accuracy of the system to provide access to the same? System reads the timestamp of the read from the cache, so lead to the error of 0.2 ms

CodePudding user response:

reference 1st floor oyljerry response:

this is expected to be nic driver to

Thank you teach, http://blog.csdn.net/jiang1013nan/article/details/19041225 said the content, please get the timestamp of the do not know and timestamp accuracy of the system to provide access to the same? System reads the timestamp of the read from the cache, so lead to the error of 0.2 ms

CodePudding user response:

access network packet network card

CodePudding user response:

The

reference 4 floor zgl7903 reply:

access network packet network card

Thank you, I am also looking at this post, link is also one of the third floor, and the problem is the precision for the timestamp of don't know how to? Tv_usev before I direct call system, but the precision is not enough, is read from the cache, I want to increase 0.2 ms