[PATCH v3] ARM: net: JIT compiler for packet filters
mgherzan at gmail.com
Wed Dec 28 10:51:34 EST 2011
Am 20.12.2011 19:55, schrieb David Miller:
> From: Mircea Gherzan<mgherzan at gmail.com>
> Date: Tue, 20 Dec 2011 19:04:23 +0100
>> Based of Matt Evans's PPC64 implementation.
>> The compiler generates ARM instructions but interworking is
>> supported for Thumb2 kernels.
>> Supports both little and big endian. Unaligned loads are emitted
>> for ARMv6+. Not all the BPF opcodes that deal with ancillary data
>> are supported. The scratch memory of the filter lives on the stack.
>> Hardware integer division is used if it is available.
>> Enabled in the same way as for x86-64 and PPC64:
>> echo 1> /proc/sys/net/core/bpf_jit_enable
>> A value greater than 1 enables opcode output.
>> Signed-off-by: Mircea Gherzan<mgherzan at gmail.com>
> I'm happy with this going in via the ARM tree once all the details
> are worked out:
I do not really care that much about the tree where this is going, as
long as it gets into 3.3 :) If you want to take it via the -net tree,
please synchronize with Russell (I've uploaded the patch to his tracking
> Acked-by: David S. Miller<davem at davemloft.net>
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