Re: [RFC Patch net-next 3/5] inetpeer: use generic union inet_addr

From: Cong Wang
Date: Mon Jul 01 2013 - 04:42:18 EST


On Thu, 2013-06-27 at 01:01 -0700, Eric Dumazet wrote:
> On Thu, 2013-06-27 at 14:43 +0800, Cong Wang wrote:
> > struct inet_peer {
> > /* group together avl_left,avl_right,v4daddr to speedup lookups */
> > struct inet_peer __rcu *avl_left, *avl_right;
> > - struct inetpeer_addr daddr;
> > + union inet_addr daddr;
>
> Please compare sizeof(struct inetpeer_addr) and sizeof(union inet_addr)
>
> If I am not mistaken, its 20 bytes instead of 28
>
> Yes, sockaddr_in6 is a bit bloated...
>

You are right.

Are you saying that I should rearrange the fields of struct inet_peer in
case of cacheline miss?

Thanks!

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