From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jakub Kicinski Subject: Re: [PATCH net-next 1/8] devlink: Add generic parameter hw_tc_offload Date: Wed, 12 Sep 2018 08:34:22 +0200 Message-ID: <20180912083422.004b21a0@cakuba> References: <1536655505-14387-1-git-send-email-vasundhara-v.volam@broadcom.com> <1536655505-14387-2-git-send-email-vasundhara-v.volam@broadcom.com> <20180911095130.GC25110@nanopsycho> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: =?UTF-8?B?SmnFmcOtIFDDrXJrbw==?= , David Miller , "michael.chan@broadcom.com" , Netdev To: Vasundhara Volam Return-path: Received: from mail-lf1-f66.google.com ([209.85.167.66]:41911 "EHLO mail-lf1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726082AbeILLhg (ORCPT ); Wed, 12 Sep 2018 07:37:36 -0400 Received: by mail-lf1-f66.google.com with SMTP id l26-v6so654373lfc.8 for ; Tue, 11 Sep 2018 23:34:34 -0700 (PDT) In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Wed, 12 Sep 2018 11:47:59 +0530, Vasundhara Volam wrote: > On Tue, Sep 11, 2018 at 3:25 PM Jiri Pirko wrote: > > > > Tue, Sep 11, 2018 at 10:44:58AM CEST, vasundhara-v.volam@broadcom.com wrote: > > >hw_tc_offload - Enable/Disable TC flower offload in the device. > > > > > >Signed-off-by: Vasundhara Volam > > >--- > > > include/net/devlink.h | 4 ++++ > > > net/core/devlink.c | 5 +++++ > > > 2 files changed, 9 insertions(+) > > > > > >diff --git a/include/net/devlink.h b/include/net/devlink.h > > >index b9b89d6..a0e9ce9 100644 > > >--- a/include/net/devlink.h > > >+++ b/include/net/devlink.h > > >@@ -362,6 +362,7 @@ enum devlink_param_generic_id { > > > DEVLINK_PARAM_GENERIC_ID_MAX_MACS, > > > DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV, > > > DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT, > > >+ DEVLINK_PARAM_GENERIC_ID_HW_TC_OFFLOAD, > > > > Could you please describe why do you need this here and why the > > tc_offload flag in ethtool is not enough. How do you imagine the user > > should use them together? > Jiri, tc_offload flag in ethtool will modify feature in driver at > runtime. But I am adding > tc_offload param here to toggle this feature in NVM Config of our > adapter, whose configuration > mode is permanent and will be effective only with a reboot of the server. > > User has to turn on tc_offload feature in NVM config of the adapter and then > enabling the tc_offload flag in ethtool will completely enable the > feature in driver. Thanks for explaining, however, I don't think we have trouble understanding *what* you are doing, but rather *why* you're doing it.