# Re: \[PATCH net-next v3 03/13\] sock: add MSG\_ZEROCOPY

- From: David Miller \<hidden\>
- Date: 2017-06-22 17:06:21 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2017/06/11058299
- Thread: https://ratatoskr.run/linux-api/2017/06/11058299/t.md

```text
From: Willem de Bruijn <redacted>
Date: Wed, 21 Jun 2017 17:18:06 -0400

> +struct ubuf_info *sock_zerocopy_alloc(struct sock *sk, size_t size)
> +{
> +	struct sk_buff *skb;
> +	struct ubuf_info *uarg;

Reverse christmas tree.

> +void sock_zerocopy_callback(struct ubuf_info *uarg, bool success)
> +{
> +	struct sock_exterr_skb *serr;
> +	struct sk_buff *skb = skb_from_uarg(uarg);
> +	struct sock *sk = skb->sk;
> +	u16 id = uarg->desc;

Likewise.
```