[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