netdev - Re: [PATCH net-next 0/3] Change BPF_TEST_RUN use the system page pool for live XDP frames

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Date: Tue, 20 Feb 2024 16:24:39 +0100
From: Toke Høiland-Jørgensen <toke@...hat.com>
To: Daniel Borkmann <daniel@...earbox.net>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
 <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Alexei Starovoitov
 <ast@...nel.org>
Cc: Alexander Lobakin <aleksander.lobakin@...el.com>,
 netdev@...r.kernel.org, bpf@...r.kernel.org
Subject: Re: [PATCH net-next 0/3] Change BPF_TEST_RUN use the system page
 pool for live XDP frames

Daniel Borkmann <daniel@...earbox.net> writes:

> On 2/20/24 12:23 PM, Toke Høiland-Jørgensen wrote:
>> Daniel Borkmann <daniel@...earbox.net> writes:
>>> On 2/19/24 7:52 PM, Toke Høiland-Jørgensen wrote:
>>>> Toke Høiland-Jørgensen <toke@...hat.com> writes:
>>>>
>>>>> Now that we have a system-wide page pool, we can use that for the live
>>>>> frame mode of BPF_TEST_RUN (used by the XDP traffic generator), and
>>>>> avoid the cost of creating a separate page pool instance for each
>>>>> syscall invocation. See the individual patches for more details.
>>>>>
>>>>> Toke Høiland-Jørgensen (3):
>>>>>     net: Register system page pool as an XDP memory model
>>>>>     bpf: test_run: Use system page pool for XDP live frame mode
>>>>>     bpf: test_run: Fix cacheline alignment of live XDP frame data
>>>>>       structures
>>>>>
>>>>>    include/linux/netdevice.h |   1 +
>>>>>    net/bpf/test_run.c        | 138 +++++++++++++++++++-------------------
>>>>>    net/core/dev.c            |  13 +++-
>>>>>    3 files changed, 81 insertions(+), 71 deletions(-)
>>>>
>>>> Hi maintainers
>>>>
>>>> This series is targeting net-next, but it's listed as delegate:bpf in
>>>> patchwork[0]; is that a mistake? Do I need to do anything more to nudge it
>>>> along?
>>>
>>> I moved it over to netdev, it would be good next time if there are dependencies
>>> which are in net-next but not yet bpf-next to clearly state them given from this
>>> series the majority touches the bpf test infra code.
>> 
>> Right, I thought that was what I was doing by targeting them at net-next
>> (in the subject). What's the proper way to do this, then, just noting it
>> in the cover letter? :)
>
> An explicit lore link to the series this depends on would be best.

Alright; seems I'm respinning anyway, so will add one in the next
revision :)

-Toke