DanielTimLee/TC.md

Created October 15, 2019 12:02

Star (0) You must be signed in to star a gist
Fork (0) You must be signed in to fork a gist

Learn more about clone URLs
Clone this repository at <script src="https://gist.github.com/DanielTimLee/362c24bf8244d5790c893edbe02cb033.js"></script>
Save DanielTimLee/362c24bf8244d5790c893edbe02cb033 to your computer and use it in GitHub Desktop.

Download ZIP

[TC] Notes about TC filter

Raw

TC.md

TC filter

u32 match udp does not work (nexthdr+0) => not follows nexthdr's port location

To use nexthdr you must use "offset" with hash table. U32 is universal (read line #2 in cls_u32.c), it does not know that you are using IPv4, so .. https://lartc.vger.kernel.narkive.com/KTD6vNXU/tc-u32-match-in-nexthdr-not-working