Re: [PATCH v2 bpf-next] selftests/bpf: fix ct status check in bpf_nf selftests

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On Thu, Sep 8, 2022 at 1:06 AM Lorenzo Bianconi <lorenzo@xxxxxxxxxx> wrote:
>
> Check properly the connection tracking entry status configured running
> bpf_ct_change_status kfunc.
> Remove unnecessary IPS_CONFIRMED status configuration since it is
> already done during entry allocation.
>
> Fixes: 6eb7fba007a7 ("selftests/bpf: Add tests for new nf_conntrack kfuncs")
> Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>

Acked-by: Song Liu <song@xxxxxxxxxx>

> ---
> Change since v1:
> - rely on nf_conntrack_common.h definitions for ct status in bpf_nf.c
> ---
>  tools/testing/selftests/bpf/prog_tests/bpf_nf.c | 5 +++--
>  tools/testing/selftests/bpf/progs/test_bpf_nf.c | 8 +++++---
>  2 files changed, 8 insertions(+), 5 deletions(-)
>
> diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_nf.c b/tools/testing/selftests/bpf/prog_tests/bpf_nf.c
> index 544bf90ac2a7..cdaf6a7d6fd1 100644
> --- a/tools/testing/selftests/bpf/prog_tests/bpf_nf.c
> +++ b/tools/testing/selftests/bpf/prog_tests/bpf_nf.c
> @@ -1,6 +1,7 @@
>  // SPDX-License-Identifier: GPL-2.0
>  #include <test_progs.h>
>  #include <network_helpers.h>
> +#include <linux/netfilter/nf_conntrack_common.h>
>  #include "test_bpf_nf.skel.h"
>  #include "test_bpf_nf_fail.skel.h"
>
> @@ -111,8 +112,8 @@ static void test_bpf_nf_ct(int mode)
>         /* allow some tolerance for test_delta_timeout value to avoid races. */
>         ASSERT_GT(skel->bss->test_delta_timeout, 8, "Test for min ct timeout update");
>         ASSERT_LE(skel->bss->test_delta_timeout, 10, "Test for max ct timeout update");
> -       /* expected status is IPS_SEEN_REPLY */
> -       ASSERT_EQ(skel->bss->test_status, 2, "Test for ct status update ");
> +       ASSERT_EQ(skel->bss->test_status, IPS_CONFIRMED | IPS_SEEN_REPLY,
> +                 "Test for ct status update ");
>         ASSERT_EQ(skel->data->test_exist_lookup, 0, "Test existing connection lookup");
>         ASSERT_EQ(skel->bss->test_exist_lookup_mark, 43, "Test existing connection lookup ctmark");
>  end:
> diff --git a/tools/testing/selftests/bpf/progs/test_bpf_nf.c b/tools/testing/selftests/bpf/progs/test_bpf_nf.c
> index 2722441850cc..a3b9d32d1555 100644
> --- a/tools/testing/selftests/bpf/progs/test_bpf_nf.c
> +++ b/tools/testing/selftests/bpf/progs/test_bpf_nf.c
> @@ -143,7 +143,6 @@ nf_ct_test(struct nf_conn *(*lookup_fn)(void *, struct bpf_sock_tuple *, u32,
>                 struct nf_conn *ct_ins;
>
>                 bpf_ct_set_timeout(ct, 10000);
> -               bpf_ct_set_status(ct, IPS_CONFIRMED);
>
>                 ct_ins = bpf_ct_insert_entry(ct);
>                 if (ct_ins) {
> @@ -156,8 +155,11 @@ nf_ct_test(struct nf_conn *(*lookup_fn)(void *, struct bpf_sock_tuple *, u32,
>                                 bpf_ct_change_timeout(ct_lk, 10000);
>                                 test_delta_timeout = ct_lk->timeout - bpf_jiffies64();
>                                 test_delta_timeout /= CONFIG_HZ;
> -                               test_status = IPS_SEEN_REPLY;
> -                               bpf_ct_change_status(ct_lk, IPS_SEEN_REPLY);
> +
> +                               bpf_ct_change_status(ct_lk,
> +                                                    IPS_CONFIRMED | IPS_SEEN_REPLY);
> +                               test_status = ct_lk->status;
> +
>                                 bpf_ct_release(ct_lk);
>                                 test_succ_lookup = 0;
>                         }
> --
> 2.37.3
>



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