From: Jeff Garzik <jgarzik@pobox.com>
To: dima@s2io.com
Cc: "Rajat Jain, Noida" <rajatj@noida.hcltech.com>,
linux-newbie@vger.kernel.org, linux-net@vger.kernel.org,
linux-kernel@vger.kernel.org, kernelnewbies@nl.linux.org,
"Sanjay Kumar, Noida" <sanjayku@hcltech.com>,
"Deepak Kumar Gupta, Noida" <dkumar@hcltech.com>
Subject: Re: zero copy issue while receiving the data (counter part of sen dfil e)
Date: Tue, 21 Dec 2004 14:30:19 -0500 [thread overview]
Message-ID: <41C879CB.3040600@pobox.com> (raw)
In-Reply-To: <1103649767.7217.100.camel@beastie>
Dmitry Yusupov wrote:
> Rajat,
>
> small correction, if NIC supports DMA operation on receive, than no
> extra copy required. Therefore sock_recvmsg() and tcp_read_sock
large correction: if NIC supports _checksum_ on receive, then no extra
copy is required.
Jeff
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WARNING: multiple messages have this Message-ID (diff)
From: Jeff Garzik <jgarzik@pobox.com>
To: dima@s2io.com
Cc: "Rajat Jain, Noida" <rajatj@noida.hcltech.com>,
linux-newbie@vger.kernel.org, linux-net@vger.kernel.org,
linux-kernel@vger.kernel.org, kernelnewbies@nl.linux.org,
"Sanjay Kumar, Noida" <sanjayku@hcltech.com>,
"Deepak Kumar Gupta, Noida" <dkumar@hcltech.com>
Subject: Re: zero copy issue while receiving the data (counter part of sen dfil e)
Date: Tue, 21 Dec 2004 14:30:19 -0500 [thread overview]
Message-ID: <41C879CB.3040600@pobox.com> (raw)
In-Reply-To: <1103649767.7217.100.camel@beastie>
Dmitry Yusupov wrote:
> Rajat,
>
> small correction, if NIC supports DMA operation on receive, than no
> extra copy required. Therefore sock_recvmsg() and tcp_read_sock
large correction: if NIC supports _checksum_ on receive, then no extra
copy is required.
Jeff
next prev parent reply other threads:[~2004-12-21 19:30 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-21 16:35 zero copy issue while receiving the data (counter part of sen dfil e) Rajat Jain, Noida
2004-12-21 16:35 ` Rajat Jain, Noida
2004-12-21 17:22 ` Dmitry Yusupov
2004-12-21 17:22 ` Dmitry Yusupov
2004-12-21 19:30 ` Jeff Garzik [this message]
2004-12-21 19:30 ` Jeff Garzik
2004-12-21 19:43 ` Dmitry Yusupov
2004-12-21 19:43 ` Dmitry Yusupov
2004-12-22 8:21 ` zero copy issue while receiving the data (counter part of sendfil e) Mandeep Sandhu
2004-12-22 8:21 ` Mandeep Sandhu
2004-12-22 15:50 ` Martijn van Oosterhout
2004-12-22 16:06 ` John W. Linville
2004-12-22 16:06 ` John W. Linville
-- strict thread matches above, loose matches on Subject: below --
2004-12-17 16:24 zero copy issue while receiving the data (counter part of sen dfil e) Rajat Jain, Noida
2004-12-17 16:24 ` Rajat Jain, Noida
2004-12-17 17:31 ` Dmitry Yusupov
2004-12-17 17:31 ` Dmitry Yusupov
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