Eric Dumazet aee636c480 bpf: do not use reciprocal divide ... At first Jakub Zawadzki noticed that some divisions by reciprocal_divide were not correct. (off by one in some cases) http://www.wireshark.org/~darkjames/reciprocal-buggy.c He could also show this with BPF: http://www.wireshark.org/~darkjames/set-and-dump-filter-k-bug.c The reciprocal divide in linux kernel is not generic enough, lets remove its use in BPF, as it is not worth the pain with current cpus. Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Jakub Zawadzki <darkjames-ws@darkjames.pl> Cc: Mircea Gherzan <mgherzan@gmail.com> Cc: Daniel Borkmann <dxchgb@gmail.com> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Cc: Matt Evans <matt@ozlabs.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-01-15 17:02:08 -08:00
..
Makefile	net: filter: BPF 'JIT' compiler for PPC64	2011-07-21 12:38:32 -07:00
bpf_jit.h	powerpc/bpf: Support MOD operation	2013-10-31 16:19:21 +11:00
bpf_jit_64.S	powerpc/bpf: BPF JIT compiler for 64-bit Little Endian	2013-10-31 16:19:15 +11:00
bpf_jit_comp.c	bpf: do not use reciprocal divide	2014-01-15 17:02:08 -08:00