netdev - Re: [Patch bpf-next v2 5/5] selftests/bpf: add timeout map check in map

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Date:   Mon, 14 Dec 2020 12:41:31 -0800
From:   Andrey Ignatov <rdna@...com>
To:     Cong Wang <xiyou.wangcong@...il.com>
CC:     <netdev@...r.kernel.org>, <bpf@...r.kernel.org>,
        Cong Wang <cong.wang@...edance.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Dongdong Wang <wangdongdong.6@...edance.com>
Subject: Re: [Patch bpf-next v2 5/5] selftests/bpf: add timeout map check in
 map_ptr tests

Cong Wang <xiyou.wangcong@...il.com> [Mon, 2020-12-14 12:11 -0800]:
> From: Cong Wang <cong.wang@...edance.com>
> 
> Similar to regular hashmap test.
> 
> Cc: Andrey Ignatov <rdna@...com>
> Cc: Alexei Starovoitov <ast@...nel.org>
> Cc: Daniel Borkmann <daniel@...earbox.net>
> Cc: Dongdong Wang <wangdongdong.6@...edance.com>
> Signed-off-by: Cong Wang <cong.wang@...edance.com>

Thanks.

Acked-by: Andrey Ignatov <rdna@...com>

> ---
>  .../selftests/bpf/progs/map_ptr_kern.c        | 20 +++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/tools/testing/selftests/bpf/progs/map_ptr_kern.c b/tools/testing/selftests/bpf/progs/map_ptr_kern.c
> index 34f9880a1903..f158b4f7e6c8 100644
> --- a/tools/testing/selftests/bpf/progs/map_ptr_kern.c
> +++ b/tools/testing/selftests/bpf/progs/map_ptr_kern.c
> @@ -648,6 +648,25 @@ static inline int check_ringbuf(void)
>  	return 1;
>  }
>  
> +struct {
> +	__uint(type, BPF_MAP_TYPE_TIMEOUT_HASH);
> +	__uint(max_entries, MAX_ENTRIES);
> +	__type(key, __u32);
> +	__type(value, __u32);
> +} m_timeout SEC(".maps");
> +
> +static inline int check_timeout_hash(void)
> +{
> +	struct bpf_htab *timeout_hash = (struct bpf_htab *)&m_timeout;
> +	struct bpf_map *map = (struct bpf_map *)&m_timeout;
> +
> +	VERIFY(check_default(&timeout_hash->map, map));
> +	VERIFY(timeout_hash->n_buckets == MAX_ENTRIES);
> +	VERIFY(timeout_hash->elem_size == 72);
> +
> +	return 1;
> +}
> +
>  SEC("cgroup_skb/egress")
>  int cg_skb(void *ctx)
>  {
> @@ -679,6 +698,7 @@ int cg_skb(void *ctx)
>  	VERIFY_TYPE(BPF_MAP_TYPE_SK_STORAGE, check_sk_storage);
>  	VERIFY_TYPE(BPF_MAP_TYPE_DEVMAP_HASH, check_devmap_hash);
>  	VERIFY_TYPE(BPF_MAP_TYPE_RINGBUF, check_ringbuf);
> +	VERIFY_TYPE(BPF_MAP_TYPE_TIMEOUT_HASH, check_timeout_hash);
>  
>  	return 1;
>  }
> -- 
> 2.25.1
> 

-- 
Andrey Ignatov