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WIP: Add packet filters in the firmware

Daniel Wegemer requested to merge filters into master


  • Upload bytes from userland to the firmware
  • Use berkeley packet filters to generate the filters
    • For testing we could use the output of -dd or -ddd from tcpdump
    • the variable in arch/arm/net/bpf_jit_32.c:pf_jit_compile() should contain the filters compiled to the target platform
  • move driver modifications from bcmdhd to nexmon
    • generate a patch based on the original bcmdhd

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