From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
To: Travis Stratman <tstratman@emacinc.com>
Cc: Ben Greear <greearb@candelatech.com>, netdev@vger.kernel.org
Subject: Re: data received but not detected
Date: Wed, 18 Jun 2008 10:28:58 +0400 [thread overview]
Message-ID: <20080618062857.GA3598@2ka.mipt.ru> (raw)
In-Reply-To: <1213743506.5771.220.camel@localhost.localdomain>
Hi.
On Tue, Jun 17, 2008 at 05:58:26PM -0500, Travis Stratman (tstratman@emacinc.com) wrote:
> I understand that there is no guarantee of anything with UDP, but it
> seems to me that if there is a packet in the buffer (it shows up after
> another packet comes in behind it) the system should know about it,
> right?
Did you run wireshark on receiver or sender?
Check MIB stats if packet was dropped because of low mem or incorrect
checksumm or some other problematic fields in UDP header. Sending part
can see it perfectly correct, which will not be the issue on the
receiver. If packet was delivered to receiving host, udp input path is
rather simple so there are no places which can race with something and
thus lost the packet.
--
Evgeniy Polyakov
next prev parent reply other threads:[~2008-06-18 6:29 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-17 22:08 data received but not detected Travis Stratman
2008-06-17 22:27 ` Stephen Hemminger
2008-06-17 22:40 ` Travis Stratman
2008-06-17 22:31 ` Ben Greear
2008-06-17 22:58 ` Travis Stratman
2008-06-17 23:45 ` Ben Greear
2008-06-19 22:53 ` Travis Stratman
2008-06-19 23:08 ` Ben Greear
2008-06-22 9:16 ` James Chapman
2008-07-07 21:56 ` Travis Stratman
2008-07-08 9:37 ` James Chapman
2008-07-15 20:46 ` Travis Stratman
2008-06-18 6:28 ` Evgeniy Polyakov [this message]
2008-06-19 23:10 ` Travis Stratman
[not found] ` <20080620060219.GA22784@2ka.mipt.ru>
2008-06-20 17:10 ` Travis Stratman
2008-06-20 17:25 ` Evgeniy Polyakov
2008-06-20 17:41 ` Travis Stratman
2008-06-20 17:54 ` Evgeniy Polyakov
2008-06-20 18:17 ` Travis Stratman
2008-06-20 18:23 ` Evgeniy Polyakov
2008-06-20 21:06 ` Travis Stratman
2008-06-21 7:12 ` Evgeniy Polyakov
2008-07-07 21:10 ` Travis Stratman
2008-07-07 21:25 ` Evgeniy Polyakov
2008-07-15 20:43 ` Travis Stratman
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