From: Yonghong Song <yhs@fb.com>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>, <davem@davemloft.net>
Cc: <daniel@iogearbox.net>, <andrii@kernel.org>,
<netdev@vger.kernel.org>, <bpf@vger.kernel.org>,
<kernel-team@fb.com>
Subject: Re: [PATCH v3 bpf-next 3/8] bpf: Remember BTF of inner maps.
Date: Mon, 28 Jun 2021 18:45:39 -0700 [thread overview]
Message-ID: <71642ba2-5fe9-70e4-69c2-bc2baaec5687@fb.com> (raw)
In-Reply-To: <20210624022518.57875-4-alexei.starovoitov@gmail.com>
On 6/23/21 7:25 PM, Alexei Starovoitov wrote:
> From: Alexei Starovoitov <ast@kernel.org>
>
> BTF is required for 'struct bpf_timer' to be recognized inside map value.
> The bpf timers are supported inside inner maps.
> Remember 'struct btf *' in inner_map_meta to make it available
> to the verifier in the sequence:
>
> struct bpf_map *inner_map = bpf_map_lookup_elem(&outer_map, ...);
> if (inner_map)
> timer = bpf_map_lookup_elem(&inner_map, ...);
>
> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
next prev parent reply other threads:[~2021-06-29 1:46 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-24 2:25 [PATCH v3 bpf-next 0/8] bpf: Introduce BPF timers Alexei Starovoitov
2021-06-24 2:25 ` [PATCH v3 bpf-next 1/8] bpf: Introduce bpf timers Alexei Starovoitov
2021-06-25 6:25 ` Yonghong Song
2021-06-25 14:57 ` Alexei Starovoitov
2021-06-25 15:54 ` Yonghong Song
2021-06-29 1:39 ` Alexei Starovoitov
2021-06-25 16:54 ` Yonghong Song
2021-06-29 1:46 ` Alexei Starovoitov
2021-06-29 2:24 ` Yonghong Song
2021-06-29 3:32 ` Alexei Starovoitov
2021-06-29 6:34 ` Andrii Nakryiko
2021-06-29 13:28 ` Alexei Starovoitov
2021-06-30 10:08 ` Andrii Nakryiko
2021-06-30 17:38 ` Alexei Starovoitov
2021-07-01 5:40 ` Alexei Starovoitov
2021-07-01 11:51 ` Toke Høiland-Jørgensen
2021-07-01 15:34 ` Alexei Starovoitov
2021-06-24 2:25 ` [PATCH v3 bpf-next 2/8] bpf: Add map side support for " Alexei Starovoitov
2021-06-25 19:46 ` Yonghong Song
2021-06-29 1:49 ` Alexei Starovoitov
2021-06-24 2:25 ` [PATCH v3 bpf-next 3/8] bpf: Remember BTF of inner maps Alexei Starovoitov
2021-06-29 1:45 ` Yonghong Song [this message]
2021-06-24 2:25 ` [PATCH v3 bpf-next 4/8] bpf: Relax verifier recursion check Alexei Starovoitov
2021-06-24 2:25 ` [PATCH v3 bpf-next 5/8] bpf: Implement verifier support for validation of async callbacks Alexei Starovoitov
2021-06-24 2:25 ` [PATCH v3 bpf-next 6/8] bpf: Teach stack depth check about " Alexei Starovoitov
2021-06-24 2:25 ` [PATCH v3 bpf-next 7/8] selftests/bpf: Add bpf_timer test Alexei Starovoitov
2021-06-24 2:25 ` [PATCH v3 bpf-next 8/8] selftests/bpf: Add a test with bpf_timer in inner map Alexei Starovoitov
2021-06-24 11:27 ` [PATCH v3 bpf-next 0/8] bpf: Introduce BPF timers Toke Høiland-Jørgensen
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