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 D5CA6A317C for ; Thu, 17 Oct 2019 16:55:01 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 497D41E96A; Thu, 17 Oct 2019 16:55:00 +0200 (CEST) Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id CBBDE2C0C for ; Thu, 17 Oct 2019 16:54:58 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Oct 2019 07:54:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.67,308,1566889200"; d="scan'208";a="199390478" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.10]) ([10.237.221.10]) by orsmga003.jf.intel.com with ESMTP; 17 Oct 2019 07:54:56 -0700 To: Stephen Hemminger , dev@dpdk.org References: <20190811160607.16441-1-stephen@networkplumber.org> <20190919131729.28681-1-stephen@networkplumber.org> <20190919131729.28681-3-stephen@networkplumber.org> From: Ferruh Yigit Openpgp: preference=signencrypt 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 2/2] net/failsafe: implement xstats 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 9/19/2019 2:17 PM, Stephen Hemminger wrote: > Add support for extended statistics in failsafe driver. > Reports basic statistics for the failsafe driver, and detailed > statistics for each sub device. +1, but doesn't need to pull basic stats to the xstats in the PMD level, that part is already done by xstats API [1], so 'fs_xstats_get.*()' functions return only sub-device basic stats is good enough which won't require the new 'rte_eth_basic_stats_.*()' APIs. Current implementation cause basic stats part duplicated for failsafe device. [1] rte_eth_xstats_get_names cnt_used_entries = rte_eth_basic_stats_get_names(dev, xstats_names) cnt_driver_entries = (*dev->dev_ops->xstats_get_names)(...) cnt_used_entries += cnt_driver_entries return cnt_used_entries; btw, while testing this I have observed an always reproducible seg fault by failsafe on testpmd quit [2], but didn't checked more, @Gaetan can you please check this when possible? [2] Shutting down port 1... Closing ports... Done Segmentation fault (core dumped) With command: testpmd -w 0:0.0 --vdev net_null0 --vdev "net_failsafe0,dev(86:00.1),dev(86:00.3)" -- -i > > Signed-off-by: Stephen Hemminger > Acked-by: Gaetan Rivet <...> > +static int > +fs_xstats_get_names(struct rte_eth_dev *dev, > + struct rte_eth_xstat_name *xstats_names, > + unsigned int limit) > +{ > + struct sub_device *sdev; > + unsigned int count; > + char tmp[RTE_ETH_XSTATS_NAME_SIZE]; > + uint8_t i; > + int r; > + > + /* Caller only cares about count */ > + if (!xstats_names) > + return fs_xstats_count(dev); > + > + r = rte_eth_basic_stats_get_names(dev, xstats_names); > + if (r < 0) > + return r; > + > + count = r; > + > + fs_lock(dev, 0); > + FOREACH_SUBDEV(sdev, i, dev) { > + struct rte_eth_xstat_name *sub_names = xstats_names + count; > + > + if (count >= limit) > + break; > + > + r = rte_eth_xstats_get_names(PORT_ID(sdev), sub_names, > + limit - count); > + if (r < 0) { > + fs_unlock(dev, 0); > + return r; > + } > + > + /* add sub_ prefix to names */ > + for (i = 0; i < r; i++) { 'i' is used in outer loop as well thanks to 'C' to let us do these kind of things without any kind of warning. Also it shows maintainer acked without testing :( > + snprintf(tmp, sizeof(tmp), "sub%u_%s", > + i, sub_names[i].name); > + memcpy(sub_names[i].name, tmp, > + RTE_ETH_XSTATS_NAME_SIZE); > + } > + > + count += r; > + } > + fs_unlock(dev, 0); > + > + return count; > +} <...>