From: "Jason A. Donenfeld"
Date: Mon, 17 Aug 2020 09:48:10 +0200
> On 8/17/20, Jesper Dangaard Brouer wrote:
>> On Sun, 16 Aug 2020 15:29:37 -0700 (PDT)
>> David Miller wrote:
>>
>>> From: "Jason A. Donenfeld"
>>> Date: Sat, 15 Aug 2020 09:29:30 +0200
>>>
>>> > When an XDP program changes the
On 8/17/20, Jesper Dangaard Brouer wrote:
> On Sun, 16 Aug 2020 15:29:37 -0700 (PDT)
> David Miller wrote:
>
>> From: "Jason A. Donenfeld"
>> Date: Sat, 15 Aug 2020 09:29:30 +0200
>>
>> > When an XDP program changes the ethernet header protocol field,
>> > eth_type_trans is used to recalculate s
On Sun, 16 Aug 2020 15:29:37 -0700 (PDT)
David Miller wrote:
> From: "Jason A. Donenfeld"
> Date: Sat, 15 Aug 2020 09:29:30 +0200
>
> > When an XDP program changes the ethernet header protocol field,
> > eth_type_trans is used to recalculate skb->protocol. In order for
> > eth_type_trans to wor
From: "Jason A. Donenfeld"
Date: Sat, 15 Aug 2020 09:29:30 +0200
> When an XDP program changes the ethernet header protocol field,
> eth_type_trans is used to recalculate skb->protocol. In order for
> eth_type_trans to work correctly, the ethernet header must actually be
> part of the skb data se
When an XDP program changes the ethernet header protocol field,
eth_type_trans is used to recalculate skb->protocol. In order for
eth_type_trans to work correctly, the ethernet header must actually be
part of the skb data segment, so the code first pushes that onto the
head of the skb. However, it
