netdev - Re: [net-next PATCH 5/9] bpf: more SK

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Date:   Mon, 28 Aug 2017 10:38:33 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     John Fastabend <john.fastabend@...il.com>
Cc:     ast@...nel.org, daniel@...earbox.net, davem@...emloft.net,
        netdev@...r.kernel.org
Subject: Re: [net-next PATCH 5/9] bpf: more SK_SKB selftests

On Mon, Aug 28, 2017 at 07:11:24AM -0700, John Fastabend wrote:
> Tests packet read/writes and additional skb fields.
> 
> Signed-off-by: John Fastabend <john.fastabend@...il.com>

Acked-by: Alexei Starovoitov <ast@...nel.org>

>  	{
> +		"invalid access of tc_classid for SK_SKB",
> +		.insns = {
> +			BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
> +				    offsetof(struct __sk_buff, tc_classid)),
> +			BPF_EXIT_INSN(),
> +		},
> +		.result = REJECT,
> +		.prog_type = BPF_PROG_TYPE_SK_SKB,
> +		.errstr = "invalid bpf_context access",

it shouldn't be readable eight, right?