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authorMircea Gherzan <mgherzan@gmail.com>2012-03-16 13:37:12 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-03-24 09:38:56 +0000
commitddecdfcea0ae891f782ae853771c867ab51024c2 (patch)
treebf344a86217258b88425834ef513585d71f58861 /arch/arm/Kconfig
parent09f05d8529ff4aa92311c1a55ce35ac98cb59b8c (diff)
downloadblackbird-op-linux-ddecdfcea0ae891f782ae853771c867ab51024c2.tar.gz
blackbird-op-linux-ddecdfcea0ae891f782ae853771c867ab51024c2.zip
ARM: 7259/3: net: JIT compiler for packet filters
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@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r--arch/arm/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ee6c7154c9a1..746ab6d6a205 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -34,6 +34,7 @@ config ARM
select GENERIC_IRQ_SHOW
select CPU_PM if (SUSPEND || CPU_IDLE)
select GENERIC_PCI_IOMAP
+ select HAVE_BPF_JIT
help
The ARM series is a line of low-power-consumption RISC chip designs
licensed by ARM Ltd and targeted at embedded applications and
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