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Date: Fri, 16 Nov 2007 10:12:42 +0800 From: Herbert Xu <herbert@...dor.apana.org.au> To: David Miller <davem@...emloft.net> Cc: haoki@...hat.com, netdev@...r.kernel.org, satoshi.oshima.fk@...achi.com, billfink@...dspring.com, andi@...stfloor.org, johnpol@....mipt.ru, shemminger@...ux-foundation.org, yoshfuji@...ux-ipv6.org, yumiko.sugita.yf@...achi.com Subject: Re: [PATCH 4/5] udp: memory limitation by using udp_mem On Thu, Nov 15, 2007 at 03:23:53PM -0800, David Miller wrote: > > We don't have tests all over the place to see if a socket is TCP or > DCCP or SCTP in order to implement memory accounting there, because we > did it for connection oriented protocols cleanly, seperating things > via callbacks etc. > > I would like to see the datagram memory accounting work similarly. I agree. In fact if we adopt some of the conventions used by stream protocols such as the use of sk_forward_alloc, we should be able to share code with TCP accounting too. As it is every packet updates a global counter, using sk_forward_alloc would mean that for most packets you only update a per-socket counter which then would feed into the global counter at points such as socket creation and destruction. Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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