BCC Support for BPF Subprograms with Tail Calls (Kernel 5.10 Feature)


jwkova@...
 

Hello,

I was wondering if BCC implements the new BPF feature (as of kernel 5.10) to allow BPF programs to utilize both BPF tail calls and BPF subprograms. This behavior is described near the end of this section of the BPF reference guide. I am interested in this functionality to extend a BPF program in order to reach the limit of 8KB of stack space.

Thanks,

Jake

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