From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id E0171A04FD; Wed, 15 Jan 2020 11:58:38 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 2056D1BFED; Wed, 15 Jan 2020 11:58:38 +0100 (CET) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by dpdk.org (Postfix) with ESMTP id 9D73A1BFE9 for ; Wed, 15 Jan 2020 11:58:36 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 15 Jan 2020 02:58:35 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,322,1574150400"; d="scan'208";a="219248660" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.35]) ([10.237.221.35]) by fmsmga007.fm.intel.com with ESMTP; 15 Jan 2020 02:58:34 -0800 To: "Iremonger, Bernard" , "dev@dpdk.org" , "Xing, Beilei" , "Zhang, Qi Z" , "Doherty, Declan" Cc: "Ananyev, Konstantin" , "Byrne, Stephen1" , "Zhang, Helin" References: <1578669630-23866-1-git-send-email-bernard.iremonger@intel.com> <1579010128-15794-12-git-send-email-bernard.iremonger@intel.com> <6c4d5cf5-c4b2-baa5-7e3e-5afe05bb5104@intel.com> From: Ferruh Yigit Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH v5 11/14] net/i40e: display Flow Director packet X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 1/15/2020 9:18 AM, Iremonger, Bernard wrote: > Hi Ferruh, > >> -----Original Message----- >> From: Yigit, Ferruh >> Sent: Tuesday, January 14, 2020 6:53 PM >> To: Iremonger, Bernard ; dev@dpdk.org; >> Xing, Beilei ; Zhang, Qi Z ; >> Doherty, Declan >> Cc: Ananyev, Konstantin ; Byrne, Stephen1 >> ; Zhang, Helin >> Subject: Re: [dpdk-dev] [PATCH v5 11/14] net/i40e: display Flow Director >> packet >> >> On 1/14/2020 1:55 PM, Bernard Iremonger wrote: >>> include rte_config.h in i40e_fdir.c >>> In debug mode call rte_hexdump in i40e_flow_fdir_construct_pkt() and >>> in i40e_fdir_construct_pkt() >>> >>> Signed-off-by: Bernard Iremonger >>> --- >>> drivers/net/i40e/i40e_fdir.c | 12 ++++++++++-- >>> 1 file changed, 10 insertions(+), 2 deletions(-) >>> >>> diff --git a/drivers/net/i40e/i40e_fdir.c >>> b/drivers/net/i40e/i40e_fdir.c index 5f85703..67bb28c 100644 >>> --- a/drivers/net/i40e/i40e_fdir.c >>> +++ b/drivers/net/i40e/i40e_fdir.c >>> @@ -21,6 +21,10 @@ >>> #include >>> #include >>> #include >>> +#include >>> +#ifdef RTE_LIBRTE_I40E_DEBUG_FD >>> +#include >>> +#endif >>> >>> #include "i40e_logs.h" >>> #include "base/i40e_type.h" >>> @@ -954,7 +958,9 @@ i40e_fdir_construct_pkt(struct i40e_pf *pf, >>> &fdir_input->flow_ext.flexbytes[dst], >>> size * sizeof(uint16_t)); >>> } >>> - >>> +#ifdef RTE_LIBRTE_I40E_DEBUG_FD >>> +rte_hexdump(stdout, NULL, raw_pkt, len); #endif >>> return 0; >>> } >>> >>> @@ -1415,7 +1421,9 @@ i40e_flow_fdir_construct_pkt(struct i40e_pf *pf, >>> &fdir_input->flow_ext.flexbytes[dst], >>> size * sizeof(uint16_t)); >>> } >>> - >>> +#ifdef RTE_LIBRTE_I40E_DEBUG_FD >>> +rte_hexdump(stdout, NULL, raw_pkt, len); #endif >>> return 0; >>> } >>> >>> >> >> Hi Bernard, >> >> These are not data path functions, right? > This code is only used when adding flow rules, so not in data path. > > If so instead of adding new config option, can we add dynamic debugging for it? > Adding new config option seems ok to me, why change to dynamic debugging? > Compile time options are OK for developer but bad for deployment, when you are deploying your product you have to disable this config option, and on the target platform there if a problem occurs there won't be any way to enable the debug to see what is happening. So it is useful only on the machine that you are both compiling and running application, even that case it is a trouble to terminate application, re-compile it and run again, most probably same loop again to turn off the debug back. Also it is bad for testing, if you want to do the all code path, someone needs to test both enabling and disabling this config option. If not, it is possible by time enabling this config option even won't compile and nobody will detect it. Since we already have dynamic log support, why not add a new logtype, lets say "pmd.net.i40e.fd" and have ability to enable/disable it without terminating app?