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From: jamal <hadi@cyberus.ca>
To: Thomas Graf <tgraf@suug.ch>
Cc: Harald Welte <laforge@gnumonks.org>,
	Robert Olsson <Robert.Olsson@data.slu.se>,
	Stephen Hemminger <shemminger@osdl.org>,
	"David S. Miller" <davem@davemloft.net>,
	herbert@gondor.apana.org.au, netdev@oss.sgi.com
Subject: Re: [PATCH 2.6] generic network statistics (was Re: [6/6]: jenkins hash for neigh / Statistics)
Date: 28 Sep 2004 22:22:07 -0400	[thread overview]
Message-ID: <1096424527.1044.94.camel@jzny.localdomain> (raw)
In-Reply-To: <20040928133334.GW31616@rei.reeler.org>

On Tue, 2004-09-28 at 09:33, Thomas Graf wrote:
> > Speaking of generic stats; i have a patch netlink ready which may need
> > some extensions. I did post it  a while back on netdev but didnt get
> > feedback.
> 
> The code looks good and I couldn't spot any errors but I'm not
> sure if the locking in gen_copy_[x]stats is a good thing.
> Shouldn't that be done earlier by the caller? 

In the netsched code that became a portability issue; Dave fixed it
there, so i just replicated here. If you feel like doing something
clever you are welcome to submit a patch.

> This prevents
> corruption but it allows duplicated TLVs in an skb. I suggest
> to make the caller have a lock on his data and only allow one
> dumper at the same time until the dump is complete, or at least
> provide a lockless variant for callers doing the locking on
> their own.
> 

Reminds me:
gnet_stats needs to have TLVs embedded in it.
bytes,drops, packets are generic enough; others are not.
So if we add a length field then we can add TLVs for things like
QSTATS = { qlen, backlog}  etc.
This means we could then allow for adding a lot of different
stats. A big lesson from current tc_stats.

cheers,
jamal

  reply	other threads:[~2004-09-29  2:22 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-09-24  5:51 [6/6]: jenkins hash for neigh David S. Miller
2004-09-24  8:52 ` Harald Welte
2004-09-24 21:27   ` David S. Miller
2004-09-25  6:44     ` Harald Welte
2004-09-25  7:56       ` David S. Miller
2004-09-25  8:14         ` YOSHIFUJI Hideaki / 吉藤英明
2004-09-25  8:27           ` YOSHIFUJI Hideaki / 吉藤英明
2004-09-25  8:30             ` David S. Miller
2004-09-25  9:09         ` Harald Welte
2004-09-25 13:33           ` Steven Whitehouse
2004-09-26  0:48             ` David S. Miller
2004-09-26  3:31           ` David S. Miller
2004-09-26 11:21             ` Thomas Graf
2004-09-27  9:29           ` Harald Welte
2004-09-27 18:57             ` David S. Miller
2004-09-26 10:11         ` YOSHIFUJI Hideaki / 吉藤英明
2004-09-27 11:43         ` Herbert Xu
2004-09-27 19:12           ` David S. Miller
2004-09-27 11:48         ` Herbert Xu
2004-09-27 18:15           ` David S. Miller
2004-09-27 21:41             ` Herbert Xu
2004-09-27 22:00               ` Herbert Xu
2004-10-02  7:50             ` Herbert Xu
2004-10-03 21:55               ` David S. Miller
2004-09-27 11:56         ` Herbert Xu
2004-09-27 19:14           ` David S. Miller
2004-09-27 22:26             ` [6/6]: jenkins hash for neigh / Statistics Harald Welte
2004-09-27 23:06               ` David S. Miller
2004-09-27 23:27                 ` Stephen Hemminger
2004-09-28  8:44                   ` Robert Olsson
2004-09-28 11:19                     ` [PATCH 2.6] generic network statistics (was Re: [6/6]: jenkins hash for neigh / Statistics) Harald Welte
2004-09-28 12:48                       ` jamal
2004-09-28 13:33                         ` Thomas Graf
2004-09-29  2:22                           ` jamal [this message]
2004-09-28 14:22                         ` Robert Olsson
2004-09-29  2:16                           ` jamal
2004-09-28 14:55                       ` Harald Welte
2004-09-28 15:17                         ` Robert Olsson
2004-09-28 16:24                           ` Harald Welte
2004-09-28 21:43                       ` David S. Miller
2004-09-29  8:04                         ` Harald Welte
2004-09-28 16:27                     ` [6/6]: jenkins hash for neigh / Statistics Stephen Hemminger
2004-09-28 17:06                       ` Harald Welte

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