From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oliver Hartkopp Subject: Re: [RFC] Join CAN filters with CAN_RAW_JOIN_FILTERS sockopt is ready for testing Date: Wed, 18 Mar 2015 08:52:27 +0100 Message-ID: <55092EBB.5060603@hartkopp.net> References: <550883AF.7080703@hartkopp.net> <550925B3.6010801@hartkopp.net> <95290d0cea49482e96eab6513a556c69@SGPMBX1011.APAC.bosch.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mo4-p00-ob.smtp.rzone.de ([81.169.146.163]:28798 "EHLO mo4-p00-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755132AbbCRHw3 (ORCPT ); Wed, 18 Mar 2015 03:52:29 -0400 In-Reply-To: <95290d0cea49482e96eab6513a556c69@SGPMBX1011.APAC.bosch.com> Sender: linux-can-owner@vger.kernel.org List-ID: To: "Pankajkumar Misra (RBEI/EEA2)" , "linux-can@vger.kernel.org" Hello Pankaj On 18.03.2015 08:48, Pankajkumar Misra (RBEI/EEA2) wrote: > I have a question here. > > The filter used with candump are software filters or actual can device filter registers are updated ? > Yes. The CAN controllers are always operated without filters and all the filtering is done in the NET_RX softirq inside the Linux network layer. See https://www.kernel.org/doc/Documentation/networking/can.txt Chapter 3.1 Regards, Oliver