diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/ppc-opcode.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/net/bpf_jit.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/net/bpf_jit_comp.c | 15 | ||||
| -rw-r--r-- | arch/powerpc/net/bpf_jit_comp64.c | 6 |
4 files changed, 19 insertions, 8 deletions
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h index 7f693e0f7499..19a8834e0398 100644 --- a/arch/powerpc/include/asm/ppc-opcode.h +++ b/arch/powerpc/include/asm/ppc-opcode.h @@ -343,6 +343,8 @@ #define PPC_INST_SLW 0x7c000030 #define PPC_INST_SLD 0x7c000036 #define PPC_INST_SRW 0x7c000430 +#define PPC_INST_SRAW 0x7c000630 +#define PPC_INST_SRAWI 0x7c000670 #define PPC_INST_SRD 0x7c000436 #define PPC_INST_SRAD 0x7c000634 #define PPC_INST_SRADI 0x7c000674 diff --git a/arch/powerpc/net/bpf_jit.h b/arch/powerpc/net/bpf_jit.h index 47fc6660845d..c2d5192ed64f 100644 --- a/arch/powerpc/net/bpf_jit.h +++ b/arch/powerpc/net/bpf_jit.h @@ -152,6 +152,10 @@ ___PPC_RS(a) | ___PPC_RB(s)) #define PPC_SRW(d, a, s) EMIT(PPC_INST_SRW | ___PPC_RA(d) | \ ___PPC_RS(a) | ___PPC_RB(s)) +#define PPC_SRAW(d, a, s) EMIT(PPC_INST_SRAW | ___PPC_RA(d) | \ + ___PPC_RS(a) | ___PPC_RB(s)) +#define PPC_SRAWI(d, a, i) EMIT(PPC_INST_SRAWI | ___PPC_RA(d) | \ + ___PPC_RS(a) | __PPC_SH(i)) #define PPC_SRD(d, a, s) EMIT(PPC_INST_SRD | ___PPC_RA(d) | \ ___PPC_RS(a) | ___PPC_RB(s)) #define PPC_SRAD(d, a, s) EMIT(PPC_INST_SRAD | ___PPC_RA(d) | \ diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c index d5bfe24bb3b5..91d223cf512b 100644 --- a/arch/powerpc/net/bpf_jit_comp.c +++ b/arch/powerpc/net/bpf_jit_comp.c @@ -379,18 +379,17 @@ static int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, hash)); break; case BPF_ANC | SKF_AD_VLAN_TAG: - case BPF_ANC | SKF_AD_VLAN_TAG_PRESENT: BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, vlan_tci) != 2); - BUILD_BUG_ON(VLAN_TAG_PRESENT != 0x1000); PPC_LHZ_OFFS(r_A, r_skb, offsetof(struct sk_buff, vlan_tci)); - if (code == (BPF_ANC | SKF_AD_VLAN_TAG)) { - PPC_ANDI(r_A, r_A, ~VLAN_TAG_PRESENT); - } else { - PPC_ANDI(r_A, r_A, VLAN_TAG_PRESENT); - PPC_SRWI(r_A, r_A, 12); - } + break; + case BPF_ANC | SKF_AD_VLAN_TAG_PRESENT: + PPC_LBZ_OFFS(r_A, r_skb, PKT_VLAN_PRESENT_OFFSET()); + if (PKT_VLAN_PRESENT_BIT) + PPC_SRWI(r_A, r_A, PKT_VLAN_PRESENT_BIT); + if (PKT_VLAN_PRESENT_BIT < 7) + PPC_ANDI(r_A, r_A, 1); break; case BPF_ANC | SKF_AD_QUEUE: BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c index 9393e231cbc2..7ce57657d3b8 100644 --- a/arch/powerpc/net/bpf_jit_comp64.c +++ b/arch/powerpc/net/bpf_jit_comp64.c @@ -529,9 +529,15 @@ static int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, if (imm != 0) PPC_SRDI(dst_reg, dst_reg, imm); break; + case BPF_ALU | BPF_ARSH | BPF_X: /* (s32) dst >>= src */ + PPC_SRAW(dst_reg, dst_reg, src_reg); + goto bpf_alu32_trunc; case BPF_ALU64 | BPF_ARSH | BPF_X: /* (s64) dst >>= src */ PPC_SRAD(dst_reg, dst_reg, src_reg); break; + case BPF_ALU | BPF_ARSH | BPF_K: /* (s32) dst >>= imm */ + PPC_SRAWI(dst_reg, dst_reg, imm); + goto bpf_alu32_trunc; case BPF_ALU64 | BPF_ARSH | BPF_K: /* (s64) dst >>= imm */ if (imm != 0) PPC_SRADI(dst_reg, dst_reg, imm); |