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selftests: bpf: Add selftest for __sk_buff tstamp
Make sure BPF_PROG_TEST_RUN accepts tstamp and exports any modifications that BPF program does. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20191015183125.124413-2-sdf@google.com
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@ -10,6 +10,7 @@ void test_skb_ctx(void)
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.cb[3] = 4,
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.cb[4] = 5,
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.priority = 6,
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.tstamp = 7,
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};
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struct bpf_prog_test_run_attr tattr = {
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.data_in = &pkt_v4,
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@ -86,4 +87,8 @@ void test_skb_ctx(void)
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"ctx_out_priority",
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"skb->priority == %d, expected %d\n",
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skb.priority, 7);
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CHECK_ATTR(skb.tstamp != 8,
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"ctx_out_tstamp",
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"skb->tstamp == %lld, expected %d\n",
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skb.tstamp, 8);
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}
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@ -16,6 +16,7 @@ int process(struct __sk_buff *skb)
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skb->cb[i]++;
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}
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skb->priority++;
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skb->tstamp++;
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return 0;
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}
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