Re: Extending connmark to 64 bits

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Matt Bennett <Matt.Bennett@xxxxxxxxxxxxxxxxxxx> wrote:
> Currently we have a number of router features making use of connection
> tracking. As such we now require more than the 32 bits connmark
> currently has. Our first inclination is to extend this field to 64 bits
> and update related areas of code appropriately.
> 
> The major question we have is whether there is a reason this field is 32
> bits (performance reasons or other)?

Its meant to align with skb->mark.

> If it is not possible to extend this field then perhaps there are other
> options (beyond disabling some features making use of connection
> tracking)?

Have you looked at using conntrack labels?

Its a 128bit storage area.
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