From: Wang Chen <wangchen@cn.fujitsu.com>
To: David Miller <davem@davemloft.net>
Cc: andi@firstfloor.org, herbert@gondor.apana.org.au,
netdev@vger.kernel.org, gerrit@erg.abdn.ac.uk
Subject: Re: [PATCH 1/2] [IPV4] UDP: Always checksum even if without socket filter
Date: Mon, 19 Nov 2007 10:02:03 +0800 [thread overview]
Message-ID: <4740EE9B.40901@cn.fujitsu.com> (raw)
In-Reply-To: <20071118.144010.236028466.davem@davemloft.net>
David Miller said the following on 2007-11-19 6:40:
> We could defer the increment until we check the checksum,
> but that is likely to break even more things because people
> (as Wang Chen did initially) will send a packet to some
> port with an app that doesn't eat the packets, and expect the
> InDatagrams counter to increase once the stack eats the packet.
As Herbert referred, RFC1213 says that udpInDatagrams records
"The total number of UDP datagrams delivered to UDP users."
So if "udp_queue_rcv_skb() doing sucessfully" means "a UDP
datagrams delivered to UDP users", the InDatagrams should be
increased in udp_queue_rcv_skb().
Otherwise it should be increased until the UDP datagrams is
actually delivered to UDP users.
next prev parent reply other threads:[~2007-11-19 2:04 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-16 2:46 [PATCH 1/2] [IPV4] UDP: Always checksum even if without socket filter Wang Chen
2007-11-16 2:54 ` David Miller
2007-11-16 3:18 ` Wang Chen
2007-11-16 4:04 ` David Miller
2007-11-16 4:13 ` Wang Chen
2007-11-16 17:02 ` Benny Amorsen
2007-11-16 4:11 ` Herbert Xu
2007-11-16 4:17 ` Wang Chen
2007-11-17 13:18 ` Andi Kleen
2007-11-18 0:09 ` David Miller
2007-11-18 21:45 ` Andi Kleen
2007-11-18 22:40 ` David Miller
2007-11-19 1:09 ` Herbert Xu
2007-11-19 8:26 ` David Miller
2007-11-19 2:02 ` Wang Chen [this message]
2007-11-19 8:30 ` David Miller
2007-11-19 4:41 ` Herbert Xu
2007-11-19 8:32 ` David Miller
2007-11-19 11:49 ` Arnaldo Carvalho de Melo
2007-11-19 15:29 ` Andi Kleen
2007-11-19 22:23 ` David Miller
2007-11-20 5:29 ` Bill Fink
2007-11-20 6:15 ` David Miller
2007-11-20 6:25 ` Wang Chen
2007-11-20 6:31 ` Herbert Xu
2007-11-20 14:05 ` Andi Kleen
2007-11-21 1:39 ` David Miller
2007-11-29 7:55 ` Wang Chen
2007-11-29 9:21 ` Herbert Xu
2007-11-29 10:08 ` Wang Chen
2007-11-29 10:21 ` Herbert Xu
2007-11-29 10:33 ` Wang Chen
2007-11-29 10:38 ` Herbert Xu
2007-11-29 10:56 ` Gerrit Renker
2007-11-29 12:01 ` Herbert Xu
2007-11-18 22:14 ` Stephen Hemminger
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