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| author | Philippe Bergheaud <felix@linux.vnet.ibm.com> | 2013-09-24 14:13:35 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-10-31 16:19:15 +1100 |
| commit | 9c662cad2fb66ff3a44b1d4f545bf496bf67ab10 (patch) | |
| tree | 631ffe0b18388dd7010c2ad36765307816e8ae22 /arch/powerpc/net/bpf_jit_comp.c | |
| parent | 711b5138d54fcfd5e312cea895d6e706a46eff19 (diff) | |
| download | lwn-9c662cad2fb66ff3a44b1d4f545bf496bf67ab10.tar.gz lwn-9c662cad2fb66ff3a44b1d4f545bf496bf67ab10.zip | |
powerpc/bpf: BPF JIT compiler for 64-bit Little Endian
This enables the Berkeley Packet Filter JIT compiler
for the PowerPC running in 64bit Little Endian.
Signed-off-by: Philippe Bergheaud <felix@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/net/bpf_jit_comp.c')
| -rw-r--r-- | arch/powerpc/net/bpf_jit_comp.c | 17 |
1 files changed, 2 insertions, 15 deletions
diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c index bf56e33f8257..81cd6c79babe 100644 --- a/arch/powerpc/net/bpf_jit_comp.c +++ b/arch/powerpc/net/bpf_jit_comp.c @@ -17,14 +17,8 @@ #include "bpf_jit.h" -#ifndef __BIG_ENDIAN -/* There are endianness assumptions herein. */ -#error "Little-endian PPC not supported in BPF compiler" -#endif - int bpf_jit_enable __read_mostly; - static inline void bpf_flush_icache(void *start, void *end) { smp_wmb(); @@ -346,18 +340,11 @@ static int bpf_jit_build_body(struct sk_filter *fp, u32 *image, break; /*** Ancillary info loads ***/ - - /* None of the BPF_S_ANC* codes appear to be passed by - * sk_chk_filter(). The interpreter and the x86 BPF - * compiler implement them so we do too -- they may be - * planted in future. - */ case BPF_S_ANC_PROTOCOL: /* A = ntohs(skb->protocol); */ BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, protocol) != 2); - PPC_LHZ_OFFS(r_A, r_skb, offsetof(struct sk_buff, - protocol)); - /* ntohs is a NOP with BE loads. */ + PPC_NTOHS_OFFS(r_A, r_skb, offsetof(struct sk_buff, + protocol)); break; case BPF_S_ANC_IFINDEX: PPC_LD_OFFS(r_scratch1, r_skb, offsetof(struct sk_buff, |