From: Andi Kleen <ak@suse.de>
To: Rob Ekl <lkhelp@rekl.yi.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Sendfile, loopback, and TCP header checksum
Date: 13 Mar 2003 22:58:27 +0100 [thread overview]
Message-ID: <p73fzpr3p4s.fsf@amdsimf.suse.de> (raw)
In-Reply-To: Rob Ekl's message of "13 Mar 2003 22:35:32 +0100"
Rob Ekl <lkhelp@rekl.yi.org> writes:
> Is this something that even needs to be addressed, since the receiver
> would discard the packet if the checksum is incorrect, but since it's over
> loopback, there's no chance of receiving data corrupted by the transport
> medium and loopback ignores the checksum?
This is an intentional optimization. Loopback doesn't need checksums,
so it doesn't generate or check them.
-Andi
next parent reply other threads:[~2003-03-13 21:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.53.0303131510060.10653@rekl.yi.org.suse.lists.linux.kernel>
2003-03-13 21:58 ` Andi Kleen [this message]
2003-03-13 21:32 Sendfile, loopback, and TCP header checksum Rob Ekl
2003-03-13 22:09 ` Matti Aarnio
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