diff options
Diffstat (limited to 'arch/arm/net')
| -rw-r--r-- | arch/arm/net/bpf_jit_32.c | 29 | ||||
| -rw-r--r-- | arch/arm/net/bpf_jit_32.h | 2 |
2 files changed, 26 insertions, 5 deletions
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c index b6f305e..a34f1e2 100644 --- a/arch/arm/net/bpf_jit_32.c +++ b/arch/arm/net/bpf_jit_32.c @@ -16,6 +16,7 @@ #include <linux/netdevice.h> #include <linux/string.h> #include <linux/slab.h> +#include <linux/if_vlan.h> #include <asm/cacheflush.h> #include <asm/hwcap.h> @@ -168,6 +169,8 @@ static inline bool is_load_to_a(u16 inst) case BPF_S_ANC_MARK: case BPF_S_ANC_PROTOCOL: case BPF_S_ANC_RXHASH: + case BPF_S_ANC_VLAN_TAG: + case BPF_S_ANC_VLAN_TAG_PRESENT: case BPF_S_ANC_QUEUE: return true; default: @@ -646,6 +649,16 @@ load_ind: update_on_xread(ctx); emit(ARM_ORR_R(r_A, r_A, r_X), ctx); break; + case BPF_S_ALU_XOR_K: + /* A ^= K; */ + OP_IMM3(ARM_EOR, r_A, r_A, k, ctx); + break; + case BPF_S_ANC_ALU_XOR_X: + case BPF_S_ALU_XOR_X: + /* A ^= X */ + update_on_xread(ctx); + emit(ARM_EOR_R(r_A, r_A, r_X), ctx); + break; case BPF_S_ALU_AND_K: /* A &= K */ OP_IMM3(ARM_AND, r_A, r_A, k, ctx); @@ -762,11 +775,6 @@ b_epilogue: update_on_xread(ctx); emit(ARM_MOV_R(r_A, r_X), ctx); break; - case BPF_S_ANC_ALU_XOR_X: - /* A ^= X */ - update_on_xread(ctx); - emit(ARM_EOR_R(r_A, r_A, r_X), ctx); - break; case BPF_S_ANC_PROTOCOL: /* A = ntohs(skb->protocol) */ ctx->seen |= SEEN_SKB; @@ -810,6 +818,17 @@ b_epilogue: off = offsetof(struct sk_buff, rxhash); emit(ARM_LDR_I(r_A, r_skb, off), ctx); break; + case BPF_S_ANC_VLAN_TAG: + case BPF_S_ANC_VLAN_TAG_PRESENT: + ctx->seen |= SEEN_SKB; + BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, vlan_tci) != 2); + off = offsetof(struct sk_buff, vlan_tci); + emit(ARM_LDRH_I(r_A, r_skb, off), ctx); + if (inst->code == BPF_S_ANC_VLAN_TAG) + OP_IMM3(ARM_AND, r_A, r_A, VLAN_VID_MASK, ctx); + else + OP_IMM3(ARM_AND, r_A, r_A, VLAN_TAG_PRESENT, ctx); + break; case BPF_S_ANC_QUEUE: ctx->seen |= SEEN_SKB; BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, diff --git a/arch/arm/net/bpf_jit_32.h b/arch/arm/net/bpf_jit_32.h index 7fa2f7d..afb8462 100644 --- a/arch/arm/net/bpf_jit_32.h +++ b/arch/arm/net/bpf_jit_32.h @@ -69,6 +69,7 @@ #define ARM_INST_CMP_I 0x03500000 #define ARM_INST_EOR_R 0x00200000 +#define ARM_INST_EOR_I 0x02200000 #define ARM_INST_LDRB_I 0x05d00000 #define ARM_INST_LDRB_R 0x07d00000 @@ -135,6 +136,7 @@ #define ARM_CMP_I(rn, imm) _AL3_I(ARM_INST_CMP, 0, rn, imm) #define ARM_EOR_R(rd, rn, rm) _AL3_R(ARM_INST_EOR, rd, rn, rm) +#define ARM_EOR_I(rd, rn, imm) _AL3_I(ARM_INST_EOR, rd, rn, imm) #define ARM_LDR_I(rt, rn, off) (ARM_INST_LDR_I | (rt) << 12 | (rn) << 16 \ | (off)) |