From: Brian Vazquez <brianvv.kernel@gmail.com>
To: Yonghong Song <yhs@fb.com>
Cc: Brian Vazquez <brianvv@google.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
"David S . Miller" <davem@davemloft.net>,
Stanislav Fomichev <sdf@google.com>,
Petar Penkov <ppenkov@google.com>,
Willem de Bruijn <willemb@google.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"bpf@vger.kernel.org" <bpf@vger.kernel.org>
Subject: Re: [PATCH v3 bpf-next 05/11] bpf: add generic_batch_ops to lpm_trie map
Date: Tue, 7 Jan 2020 00:39:07 -0600 [thread overview]
Message-ID: <CABCgpaUHEWg6nwEEy47rF=aeK0AtNpAp3+pJVnObZU87FuUMgw@mail.gmail.com> (raw)
In-Reply-To: <ba15746b-2cd8-5a04-08fa-3c85b94db15b@fb.com>
Hi Yonghong, thanks for reviewing it and sorry for the late reply I
had been traveling.
On Fri, Dec 13, 2019 at 11:46 AM Yonghong Song <yhs@fb.com> wrote:
>
>
>
> On 12/11/19 2:33 PM, Brian Vazquez wrote:
> > This adds the generic batch ops functionality to bpf lpm_trie.
> >
> > Signed-off-by: Brian Vazquez <brianvv@google.com>
> > ---
> > kernel/bpf/lpm_trie.c | 4 ++++
> > 1 file changed, 4 insertions(+)
> >
> > diff --git a/kernel/bpf/lpm_trie.c b/kernel/bpf/lpm_trie.c
> > index 56e6c75d354d9..92c47b4f03337 100644
> > --- a/kernel/bpf/lpm_trie.c
> > +++ b/kernel/bpf/lpm_trie.c
> > @@ -743,4 +743,8 @@ const struct bpf_map_ops trie_map_ops = {
> > .map_update_elem = trie_update_elem,
> > .map_delete_elem = trie_delete_elem,
> > .map_check_btf = trie_check_btf,
> > + .map_lookup_batch = generic_map_lookup_batch,
> > + .map_lookup_and_delete_batch = generic_map_lookup_and_delete_batch,
>
> Not 100% sure whether trie should use generic map
> lookup/lookup_and_delete or not. If the key is not available,
> the get_next_key will return the 'leftmost' node which roughly
> corresponding to the first node in the hash table.
>
I think you're right, we shouldn't use generic
lookup/lookup_and_delete for lpm_trie. That being said, would you be
ok, if we don't add lpm_trie support in this patch series? Also we can
drop the generic_map_lookup_and_delete implementation in this patch
series and add it in the future, if needed. What do you think?
> > + .map_delete_batch = generic_map_delete_batch,
> > + .map_update_batch = generic_map_update_batch,with efault
> > };
> >
next prev parent reply other threads:[~2020-01-07 6:39 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-11 22:33 [PATCH v3 bpf-next 00/11] add bpf batch ops to process more than 1 elem Brian Vazquez
2019-12-11 22:33 ` [PATCH v3 bpf-next 01/11] bpf: add bpf_map_{value_size,update_value,map_copy_value} functions Brian Vazquez
2019-12-13 17:05 ` Yonghong Song
2019-12-11 22:33 ` [PATCH v3 bpf-next 02/11] bpf: add generic support for lookup and lookup_and_delete batch ops Brian Vazquez
2019-12-13 17:26 ` Yonghong Song
2020-01-07 6:50 ` Brian Vazquez
2020-01-07 18:06 ` Yonghong Song
2019-12-11 22:33 ` [PATCH v3 bpf-next 03/11] bpf: add generic support for update and delete " Brian Vazquez
2019-12-13 17:38 ` Yonghong Song
2019-12-11 22:33 ` [PATCH v3 bpf-next 04/11] bpf: add lookup and updated batch ops to arraymap Brian Vazquez
2019-12-13 17:39 ` Yonghong Song
2019-12-11 22:33 ` [PATCH v3 bpf-next 05/11] bpf: add generic_batch_ops to lpm_trie map Brian Vazquez
2019-12-13 17:46 ` Yonghong Song
2020-01-07 6:39 ` Brian Vazquez [this message]
2020-01-07 17:57 ` Yonghong Song
2019-12-11 22:33 ` [PATCH v3 bpf-next 06/11] bpf: add batch ops to all htab bpf map Brian Vazquez
2019-12-13 18:14 ` Yonghong Song
2019-12-13 18:58 ` Yonghong Song
2020-01-07 7:02 ` Brian Vazquez
2020-01-07 18:18 ` Yonghong Song
2020-01-08 0:32 ` Brian Vazquez
2019-12-11 22:33 ` [PATCH v3 bpf-next 07/11] tools/bpf: sync uapi header bpf.h Brian Vazquez
2019-12-11 22:33 ` [PATCH v3 bpf-next 08/11] libbpf: add libbpf support to batch ops Brian Vazquez
2019-12-19 0:54 ` Andrii Nakryiko
2020-01-07 6:51 ` Brian Vazquez
2019-12-11 22:33 ` [PATCH v3 bpf-next 09/11] selftests/bpf: add batch ops testing for htab and htab_percpu map Brian Vazquez
2019-12-13 18:34 ` Yonghong Song
2019-12-13 18:40 ` Yonghong Song
2019-12-11 22:33 ` [PATCH v3 bpf-next 10/11] selftests/bpf: add batch ops testing to array bpf map Brian Vazquez
2019-12-11 22:33 ` [PATCH v3 bpf-next 11/11] selftests/bpf: add batch ops testing to lpm_trie " Brian Vazquez
2019-12-13 5:16 ` [PATCH v3 bpf-next 00/11] add bpf batch ops to process more than 1 elem Alexei Starovoitov
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