From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by dpdk.space (Postfix) with ESMTP id 0D09EA05D3 for ; Fri, 29 Mar 2019 18:03:12 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id C45F34CA0; Fri, 29 Mar 2019 18:03:09 +0100 (CET) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by dpdk.org (Postfix) with ESMTP id 216B14C99 for ; Fri, 29 Mar 2019 18:03:06 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 29 Mar 2019 10:03:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,285,1549958400"; d="scan'208";a="157009214" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.46]) ([10.237.221.46]) by fmsmga004.fm.intel.com with ESMTP; 29 Mar 2019 10:03:03 -0700 To: "Varghese, Vipin" , "Pattan, Reshma" , "dev@dpdk.org" Cc: "Wiles, Keith" , "Mcnamara, John" , "Byrne, Stephen1" , "Tamboli, Amit S" , "Padubidri, Sanjay A" , "Patel, Amol" , "Kovacevic, Marko" References: <20190328145746.11786-1-vipin.varghese@intel.com> <20190328150406.12051-1-vipin.varghese@intel.com> <3AEA2BF9852C6F48A459DA490692831F2A432BA2@irsmsx110.ger.corp.intel.com> <4C9E0AB70F954A408CC4ADDBF0F8FA7D4D32780A@BGSMSX101.gar.corp.intel.com> From: Ferruh Yigit Openpgp: preference=signencrypt Autocrypt: addr=ferruh.yigit@intel.com; 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WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <4C9E0AB70F954A408CC4ADDBF0F8FA7D4D32780A@BGSMSX101.gar.corp.intel.com> Content-Type: text/plain; charset="UTF-8" Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH v3] app/pdump: enhance to support multi-core capture 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" Message-ID: <20190329170303.LGB1pPEi4136D-YnlEiZiVSr8N-0CkkqWIGGLzIWQgE@z> On 3/29/2019 10:22 AM, Varghese, Vipin wrote: > Hi Reshma, > > snipped >>> >>> /* true if x is a power of 2 */ >>> #define POWEROF2(x) ((((x)-1) & (x)) == 0) @@ -144,7 +145,7 @@ static >>> volatile uint8_t quit_signal; static void pdump_usage(const char *prgname) { >>> - printf("usage: %s [EAL options] -- --pdump " >>> + printf("usage: %s [EAL options] -- [-l ] --pdump " >> >> Using -l option same as eal is confusing. Please use other name. > Current implementation passes core-mask '-cx1' as EAL argument. The check for user argument '-l > Hence I disagree to the point it is confusing. I agree with Reshma, if there is a need to run in different cores, lets remove the hardcoded core information from application and manage the core selection in eal level, instead of having this in application. And in app level, you can say which core to use for that specific pdump, overall something like: dpdk-pdump -l 20,23 -- --pdump 'port=0,queue=*,core=21,rx-dev=/tmp/rx.pcap' --pdump 'port=1,queue=*,core=22,tx-dev=/tmp/tx.pcap' > >> Also how about moving this new option inside --pdump"" so it will be clearly >> known that the particular core will be associated to that tuple. > Yes, this can be done. > >> >> Also, I have some major concern, check my below comments. > Thanks for your concerns, let me try to address them below. > >> >>> "'(port= | device_id=)," >>> "(queue=)," >>> "(rx-dev= |" >>> @@ -415,6 +416,7 @@ print_pdump_stats(void) >>> for (i = 0; i < num_tuples; i++) { >>> printf("##### PDUMP DEBUG STATS #####\n"); >>> pt = &pdump_t[i]; >>> + printf(" == DPDK interface (%d) ==\n", i); >> >> Here good to print the portid/deviceid and queue info, instead of printing pdump >> tuple index i? User might not understand that. > I am not sure, why you mention that I am displaying tuple index with I here? > >> Use ### instead of === as above. > I can do this, but is there specific reasoning for "####" as it is used to represent main header? > >> >>> + >>> static inline void >>> dump_packets(void) >>> { >>> int i; >>> - struct pdump_tuples *pt; >>> + uint32_t lcore_id = 0; >>> + >>> + lcore_id = rte_get_next_lcore(lcore_id, 1, 1); >>> + >>> + if (rte_lcore_count() == 1) { >>> + while (!quit_signal) { >>> + for (i = 0; i < num_tuples; i++) { >>> + struct pdump_tuples *pt = &pdump_t[i]; >>> + pdump_packets(pt); >>> + } >>> + } >>> + } else { >>> + printf(" Tuples (%u) lcores (%u)\n", >>> + num_tuples, rte_lcore_count()); >>> + >>> + if ((uint32_t)num_tuples >= rte_lcore_count()) { >>> + printf("Insufficent Cores\n"); >> Typo %s/Insufficent/ > Ok > >> >> >>> + for (i = 0; i < argc; i++) { >>> + if (strstr(argv[i], "-l")) { >>> + snprintf(c_flag, RTE_DIM(c_flag), "-l %s", argv[i+1]); >> >> You are taking this as application arguments then making it as eal argument to >> run the application. > I have explained the same above. > >> Why not enable the needed number of cores in core mask using eal options -l > I think what you are saying is "allow user to pass -l option or -c option before `--`". Then before invoking rte_eal_init replace it. Is this your requirement? > > and >> have new core param in pdump tuple to run that tuple on that core. >> >> Ex: >> If you check l3fwd as an example the cores should enabled using -c or -l and then >> they have separate --config l3fwd option in which they specify the core on which >> the packet processing should be run. Please check that and similar would be good >> here too. > I have already explained, pdump application makes static assignment of '-cx1'. If you try passing '-c' or '-l' the error check in rte_eal_init will prevent such assignment. > >> >>> + strlcpy(argv[i], "", 2); >>> + strlcpy(argv[i + 1], "", 2); >> >> Why is this? > I have explained this above. > > > Anyway, rte_strlcpy should be used instead of strlcpy. > Ok > >> >> Thanks, >> Reshma > Hi Reshma, thanks for feedbacks on cosmetic, spelling and using rte_strlcpy >