[SRU Request] tc/ebpf: unable to use BPF_FUNC_skb_change_head

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[SRU Request] tc/ebpf: unable to use BPF_FUNC_skb_change_head

Nicolas Dichtel
Hi Ubuntu kernel team,

please, could you consider to backport the linux upstream commit 6f3f65d80dac
("net: bpf: Allow TC programs to call BPF_FUNC_skb_change_head"):

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f3f65d80dac

It is included in v5.8 (the bug exists since v4.10).

Here is the launchpad entry:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1896504


Thank you,
Nicolas

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Re: [SRU Request] tc/ebpf: unable to use BPF_FUNC_skb_change_head

Thadeu Lima de Souza Cascardo-3
On Mon, Sep 21, 2020 at 05:49:52PM +0200, Nicolas Dichtel wrote:

> Hi Ubuntu kernel team,
>
> please, could you consider to backport the linux upstream commit 6f3f65d80dac
> ("net: bpf: Allow TC programs to call BPF_FUNC_skb_change_head"):
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f3f65d80dac
>
> It is included in v5.8 (the bug exists since v4.10).
>
> Here is the launchpad entry:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1896504
>
>
> Thank you,
> Nicolas
>
> --

Hi, Nicolas.

What do you want to backport it to? What packages on what series? And could you
expand on the test case, that is, provide code for that? That would be really
helpful!

Thanks.
Cascardo.

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Re: [SRU Request] tc/ebpf: unable to use BPF_FUNC_skb_change_head

Nicolas Dichtel
Le 21/09/2020 à 19:30, Thadeu Lima de Souza Cascardo a écrit :

> On Mon, Sep 21, 2020 at 05:49:52PM +0200, Nicolas Dichtel wrote:
>> Hi Ubuntu kernel team,
>>
>> please, could you consider to backport the linux upstream commit 6f3f65d80dac
>> ("net: bpf: Allow TC programs to call BPF_FUNC_skb_change_head"):
>>
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f3f65d80dac
>>
>> It is included in v5.8 (the bug exists since v4.10).
>>
>> Here is the launchpad entry:
>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1896504
>>
>>
>> Thank you,
>> Nicolas
>>
>> --
>
> Hi, Nicolas.
Hi Cascardo,

>
> What do you want to backport it to? What packages on what series? And could you
> expand on the test case, that is, provide code for that? That would be really
> helpful!
We target the focal kernel (5.4). I've added an explicit test case in the
launchpad entry.


Thank you,
Nicolas

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Re: [SRU Request] tc/ebpf: unable to use BPF_FUNC_skb_change_head

Thadeu Lima de Souza Cascardo-3
On Tue, Sep 22, 2020 at 10:59:18AM +0200, Nicolas Dichtel wrote:

> Le 21/09/2020 à 19:30, Thadeu Lima de Souza Cascardo a écrit :
> > On Mon, Sep 21, 2020 at 05:49:52PM +0200, Nicolas Dichtel wrote:
> >> Hi Ubuntu kernel team,
> >>
> >> please, could you consider to backport the linux upstream commit 6f3f65d80dac
> >> ("net: bpf: Allow TC programs to call BPF_FUNC_skb_change_head"):
> >>
> >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f3f65d80dac
> >>
> >> It is included in v5.8 (the bug exists since v4.10).
> >>
> >> Here is the launchpad entry:
> >> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1896504
> >>
> >>
> >> Thank you,
> >> Nicolas
> >>
> >> --
> >
> > Hi, Nicolas.
> Hi Cascardo,
>
> >
> > What do you want to backport it to? What packages on what series? And could you
> > expand on the test case, that is, provide code for that? That would be really
> > helpful!
> We target the focal kernel (5.4). I've added an explicit test case in the
> launchpad entry.
>
>
> Thank you,
> Nicolas

Thanks, Nicolas. I'll look at it.
Cascardo.

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APPLIED[F]: [SRU Request] tc/ebpf: unable to use BPF_FUNC_skb_change_head

Ian May
In reply to this post by Nicolas Dichtel
Applied to Focal/master-next.  Thanks!

Ian

On 2020-09-21 17:49:52 , Nicolas Dichtel wrote:

> Hi Ubuntu kernel team,
>
> please, could you consider to backport the linux upstream commit 6f3f65d80dac
> ("net: bpf: Allow TC programs to call BPF_FUNC_skb_change_head"):
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f3f65d80dac
>
> It is included in v5.8 (the bug exists since v4.10).
>
> Here is the launchpad entry:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1896504
>
>
> Thank you,
> Nicolas
>
> --
> kernel-team mailing list
> [hidden email]
> https://lists.ubuntu.com/mailman/listinfo/kernel-team

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