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Message-Id: <1424023605-2416-7-git-send-email-kda@linux-powerpc.org> Date: Sun, 15 Feb 2015 21:06:45 +0300 From: Denis Kirjanov <kda@...ux-powerpc.org> To: netdev@...r.kernel.org Cc: linuxppc-dev@...ts.ozlabs.org, Denis Kirjanov <kda@...ux-powerpc.org> Subject: [PATCH net-next 6/6] ppc: bpf: Add SKF_AD_CPU for ppc32 Signed-off-by: Denis Kirjanov <kda@...ux-powerpc.org> --- arch/powerpc/net/bpf_jit.h | 17 +++++++++++++++++ arch/powerpc/net/bpf_jit_comp.c | 14 +------------- 2 files changed, 18 insertions(+), 13 deletions(-) diff --git a/arch/powerpc/net/bpf_jit.h b/arch/powerpc/net/bpf_jit.h index 2d5e715..889fd19 100644 --- a/arch/powerpc/net/bpf_jit.h +++ b/arch/powerpc/net/bpf_jit.h @@ -154,6 +154,23 @@ DECLARE_LOAD_FUNC(sk_load_byte_msh); #define PPC_LL_OFFS(r, base, i) do { PPC_LWZ_OFFS(r, base, i); } while(0) #endif +#ifdef CONFIG_SMP +#ifdef CONFIG_PPC64 +#define PPC_BPF_LOAD_CPU(r) \ + do { BUILD_BUG_ON(FIELD_SIZEOF(struct paca_struct, paca_index) != 2); \ + PPC_LHZ_OFFS(r, 13, offsetof(struct paca_struct, paca_index)); \ + } while (0) +#else +#define PPC_BPF_LOAD_CPU(r) \ + do { BUILD_BUG_ON(FIELD_SIZEOF(struct thread_info, cpu) != 4); \ + PPC_LHZ_OFFS(r, (1 & ~(THREAD_SIZE - 1)), \ + offsetof(struct thread_info, cpu)); \ + } while(0) +#endif +#else +#define PPC_BPF_LOAD_CPU(r) do { PPC_LI(r, 0); } while(0) +#endif + #define PPC_CMPWI(a, i) EMIT(PPC_INST_CMPWI | ___PPC_RA(a) | IMM_L(i)) #define PPC_CMPDI(a, i) EMIT(PPC_INST_CMPDI | ___PPC_RA(a) | IMM_L(i)) #define PPC_CMPLWI(a, i) EMIT(PPC_INST_CMPLWI | ___PPC_RA(a) | IMM_L(i)) diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c index 8b29268..17cea18 100644 --- a/arch/powerpc/net/bpf_jit_comp.c +++ b/arch/powerpc/net/bpf_jit_comp.c @@ -411,20 +411,8 @@ static int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, PPC_SRWI(r_A, r_A, 5); break; case BPF_ANC | SKF_AD_CPU: -#ifdef CONFIG_SMP - /* - * PACA ptr is r13: - * raw_smp_processor_id() = local_paca->paca_index - */ - BUILD_BUG_ON(FIELD_SIZEOF(struct paca_struct, - paca_index) != 2); - PPC_LHZ_OFFS(r_A, 13, - offsetof(struct paca_struct, paca_index)); -#else - PPC_LI(r_A, 0); -#endif + PPC_BPF_LOAD_CPU(r_A); break; - /*** Absolute loads from packet header/data ***/ case BPF_LD | BPF_W | BPF_ABS: func = CHOOSE_LOAD_FUNC(K, sk_load_word); -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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