diff options
Diffstat (limited to 'arch/mips/net')
| -rw-r--r-- | arch/mips/net/bpf_jit.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/arch/mips/net/bpf_jit.c b/arch/mips/net/bpf_jit.c index 49a2e2226fee..880e329310ee 100644 --- a/arch/mips/net/bpf_jit.c +++ b/arch/mips/net/bpf_jit.c @@ -365,6 +365,12 @@ static inline void emit_half_load(unsigned int reg, unsigned int base, emit_instr(ctx, lh, reg, offset, base); } +static inline void emit_half_load_unsigned(unsigned int reg, unsigned int base, + unsigned int offset, struct jit_ctx *ctx) +{ + emit_instr(ctx, lhu, reg, offset, base); +} + static inline void emit_mul(unsigned int dst, unsigned int src1, unsigned int src2, struct jit_ctx *ctx) { @@ -1112,6 +1118,8 @@ jmp_cmp: break; case BPF_ANC | SKF_AD_IFINDEX: /* A = skb->dev->ifindex */ + case BPF_ANC | SKF_AD_HATYPE: + /* A = skb->dev->type */ ctx->flags |= SEEN_SKB | SEEN_A; off = offsetof(struct sk_buff, dev); /* Load *dev pointer */ @@ -1120,10 +1128,15 @@ jmp_cmp: emit_bcond(MIPS_COND_EQ, r_s0, r_zero, b_imm(prog->len, ctx), ctx); emit_reg_move(r_ret, r_zero, ctx); - BUILD_BUG_ON(FIELD_SIZEOF(struct net_device, - ifindex) != 4); - off = offsetof(struct net_device, ifindex); - emit_load(r_A, r_s0, off, ctx); + if (code == (BPF_ANC | SKF_AD_IFINDEX)) { + BUILD_BUG_ON(FIELD_SIZEOF(struct net_device, ifindex) != 4); + off = offsetof(struct net_device, ifindex); + emit_load(r_A, r_s0, off, ctx); + } else { /* (code == (BPF_ANC | SKF_AD_HATYPE) */ + BUILD_BUG_ON(FIELD_SIZEOF(struct net_device, type) != 2); + off = offsetof(struct net_device, type); + emit_half_load_unsigned(r_A, r_s0, off, ctx); + } break; case BPF_ANC | SKF_AD_MARK: ctx->flags |= SEEN_SKB | SEEN_A; |