# Re: \[PATCH v5 2/3\] net: add kcov handle to skb extensions

- From: Johannes Berg \<johannes@sipsolutions.net\>
- Date: 2020-11-21 17:39:58 
- List: netdev
- Page: https://ratatoskr.run/netdev/2020/11/6185293
- Thread: https://ratatoskr.run/netdev/2020/10/6156938/t.md

```text
On Sat, 2020-11-21 at 17:52 +0100, Florian Westphal wrote:
> 
> Aleksandr, why was this made into an skb extension in the first place?
> 
> AFAIU this feature is usually always disabled at build time.
> For debug builds (test farm /debug kernel etc) its always needed.
> 
> If thats the case this u64 should be an sk_buff member, not an
> extension.

Because it was requested :-)

https://lore.kernel.org/netdev/20201009161558.57792e1a@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com/

johannes

```