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ARM: net: add support for BPF_ANC | SKF_AD_PAY_OFFSET in ARM JIT. 

Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nicolas Schichan 2015-07-27 15:06:50 +02:00 committed by David S. Miller
parent 1447f93f22
commit 303249ab16
1 changed files with 8 additions and 0 deletions
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8
arch/arm/net/bpf_jit_32.c
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@ -915,6 +915,14 @@ static int build_body(struct jit_ctx *ctx)
off = offsetof(struct sk_buff, queue_mapping);
emit(ARM_LDRH_I(r_A, r_skb, off), ctx);
break;
case BPF_ANC | SKF_AD_PAY_OFFSET:
ctx->seen |= SEEN_SKB | SEEN_CALL;
emit(ARM_MOV_R(ARM_R0, r_skb), ctx);
emit_mov_i(ARM_R3, (unsigned int)skb_get_poff, ctx);
emit_blx_r(ARM_R3, ctx);
emit(ARM_MOV_R(r_A, ARM_R0), ctx);
break;
case BPF_LDX | BPF_W | BPF_ABS:
/*
* load a 32bit word from struct seccomp_data.