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ARM: net: add JIT support for loads from struct seccomp_data.

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Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nicolas Schichan 2015-05-07 15:00:13 +02:00 committed by David S. Miller
parent 8df2914598
commit 24e737c1eb
1 changed files with 10 additions and 0 deletions
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10
arch/arm/net/bpf_jit_32.c
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@ -852,6 +852,16 @@ 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_LDX | BPF_W | BPF_ABS:
/*
* load a 32bit word from struct seccomp_data.
* seccomp_check_filter() will already have checked
* that k is 32bit aligned and lies within the
* struct seccomp_data.
*/
ctx->seen |= SEEN_SKB;
emit(ARM_LDR_I(r_A, r_skb, k), ctx);
break;
default:
return -1;
}