netdev - Re: [RFC PATCH 1/4] inet: add counter to inet_bind

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Date:	Wed, 30 May 2012 10:00:21 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Alexandru Copot <alex.mihai.c@...il.com>
Cc:	davem@...emloft.net, gerrit@....abdn.ac.uk, kuznet@....inr.ac.ru,
	jmorris@...ei.org, yoshfuji@...ux-ipv6.org, kaber@...sh.net,
	netdev@...r.kernel.org, Daniel Baluta <dbaluta@...acom.com>,
	Lucian Grijincu <lucian.grijincu@...il.com>
Subject: Re: [RFC PATCH 1/4] inet: add counter to inet_bind_hashbucket

On Wed, 2012-05-30 at 10:36 +0300, Alexandru Copot wrote:
> The counter will be used by the upcoming INET lookup algorithm to
> choose the shortest chain after secondary hash is added.
> 
> Signed-off-by: Alexandru Copot <alex.mihai.c@...il.com>
> Cc: Daniel Baluta <dbaluta@...acom.com>
> Cc: Lucian Grijincu <lucian.grijincu@...il.com>
> ---
>  include/net/inet_hashtables.h    |    4 +++-
>  include/net/inet_timewait_sock.h |    4 +++-
>  net/dccp/proto.c                 |    1 +
>  net/ipv4/inet_hashtables.c       |    9 ++++++---
>  net/ipv4/inet_timewait_sock.c    |    7 ++++---
>  net/ipv4/tcp.c                   |    1 +
>  6 files changed, 18 insertions(+), 8 deletions(-)
> 
> diff --git a/include/net/inet_hashtables.h b/include/net/inet_hashtables.h
> index 808fc5f..8c6addc 100644
> --- a/include/net/inet_hashtables.h
> +++ b/include/net/inet_hashtables.h
> @@ -98,6 +98,7 @@ static inline struct net *ib_net(struct inet_bind_bucket *ib)
>  struct inet_bind_hashbucket {
>  	spinlock_t		lock;
>  	struct hlist_head	chain;
> +	unsigned int		count;
>  };
>  

Are you still using 32bit kernel ?

better use :

struct inet_bind_hashbucket {
	spinlock_t		lock;
	unsigned int		count;
 	struct hlist_head	chain;
};


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