Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754139AbXEGIR0 (ORCPT ); Mon, 7 May 2007 04:17:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754142AbXEGIR0 (ORCPT ); Mon, 7 May 2007 04:17:26 -0400 Received: from host1.audiocodes.com ([212.25.125.1]:46224 "EHLO aclmsg.corp.audiocodes.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1754139AbXEGIR0 convert rfc822-to-8bit (ORCPT ); Mon, 7 May 2007 04:17:26 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Subject: RE: select-like implementation for kernel sockets Date: Mon, 7 May 2007 11:04:06 +0300 Message-ID: In-Reply-To: <416aa1ad0705062357i5a76684ao1d45ef235a6cd20f@mail.gmail.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: select-like implementation for kernel sockets Thread-Index: AceQdSK1YzK16eQoQryBH1nz5m3wDAACKmrg From: "Eitan Richardson" To: "kalash nainwal" , "Robert Hancock" Cc: "linux-kernel" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2162 Lines: 72 Hi, Thanks for the tip. I understand sk_data_ready is a callback that is called when there is data ready in the socket. Is it safe to override it? Do you have an example? Thanks, Eitan. -----Original Message----- From: kalash nainwal [mailto:kalash.nainwal@gmail.com] Sent: Monday, May 07, 2007 9:57 AM To: Robert Hancock Cc: Eitan Richardson; linux-kernel Subject: Re: select-like implementation for kernel sockets Importance: Low On 5/6/07, Robert Hancock wrote: > eitanr@audiocodes.com wrote: > > Hi, > > > > I'm using kernel sockets to Tx and Rx UDP packets between my hardware > > device (DSP) to the external network (this is part of a VoIP > > implementation). The motivation for using kernel sockets rather than > > user-space sockets is to avoid the copying of data between kernel and > > user spaces. > > I think we are zero-copy in many cases for UDP these days, so this > doesn't necessarily buy you anything.. > > > > > I have no problems on the Tx side (I simply call sock_sendmsg on one > > of the sockets), but for the Rx side I want to listen-in on multiple > > sockets in blocking mode (I don't want to use polling). > > > > Is there a way to listen-in on multiple kernel sockets from one kernel > > thread? In the user space I would have used select(), but I am not > > familiar with a similar solution for the kernel space. > > implementing (sock->)sk_data_ready() might serve your purpose? > > Thanks, > > Eitan. > > > > Eitan Richardson > > AudioCodes Ltd. > > > > -- > Robert Hancock Saskatoon, SK, Canada > To email, remove "nospam" from hancockr@nospamshaw.ca > Home Page: http://www.roberthancock.com/ > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/