• Alexei Starovoitov's avatar
    selftests/bpf: add few verifier scale tests · e5e7a8f2
    Alexei Starovoitov authored
    Add 3 basic tests that stress verifier scalability.
    
    test_verif_scale1.c calls non-inlined jhash() function 90 times on
    different position in the packet.
    This test simulates network packet parsing.
    jhash function is ~140 instructions and main program is ~1200 insns.
    
    test_verif_scale2.c force inlines jhash() function 90 times.
    This program is ~15k instructions long.
    
    test_verif_scale3.c calls non-inlined jhash() function 90 times on
    But this time jhash has to process 32-bytes from the packet
    instead of 14-bytes in tests 1 and 2.
    jhash function is ~230 insns and main program is ~1200 insns.
    
    $ test_progs -s
    can be used to see verifier stats.
    Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
    Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
    e5e7a8f2
test_progs.h 2.18 KB