diff options
Diffstat (limited to 'arch/arm/net/bpf_jit_32.c')
| -rw-r--r-- | arch/arm/net/bpf_jit_32.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c index 8be702de34f9..9af9a690dbda 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: @@ -815,6 +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, |