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 EA316A0530; Mon, 3 Feb 2020 18:46:30 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 130071BFA1; Mon, 3 Feb 2020 18:46:30 +0100 (CET) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id C86A11BF9A; Mon, 3 Feb 2020 18:46:28 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 Feb 2020 09:46:27 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,398,1574150400"; d="scan'208";a="249071961" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.61]) ([10.237.221.61]) by orsmga002.jf.intel.com with ESMTP; 03 Feb 2020 09:46:25 -0800 From: Ferruh Yigit To: Ori Kam , Wenzhuo Lu , Jingjing Wu , Bernard Iremonger Cc: "dev@dpdk.org" , Slava Ovsiienko , "stable@dpdk.org" References: <1580403575-142634-1-git-send-email-orika@mellanox.com> <0439a4bb-1260-90f9-a678-13e3237345f6@intel.com> Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [dpdk-stable] [PATCH] app/testpmd: fix uninitialized members of mpls 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 2/3/2020 10:21 AM, Ferruh Yigit wrote: > On 2/2/2020 8:23 AM, Ori Kam wrote: >> Hi Ferruh, >> >> PSB, >> Thanks, >> Ori >> >>> -----Original Message----- >>> From: Ferruh Yigit >>> Sent: Friday, January 31, 2020 1:08 PM >>> To: Ori Kam ; Wenzhuo Lu ; >>> Jingjing Wu ; Bernard Iremonger >>> >>> Cc: dev@dpdk.org; Slava Ovsiienko ; >>> stable@dpdk.org >>> Subject: Re: [PATCH] app/testpmd: fix uninitialized members of mpls >>> >>> On 1/30/2020 4:59 PM, Ori Kam wrote: >>>> Some of the memebers of the mpls struct are not initialized. >>>> this commit init the uninitialized members. >>>> >>>> Coverity issue: 325735 >>>> Fixes: 3e77031be855 ("app/testpmd: add MPLSoGRE encapsulation") >>>> Cc: stable@dpdk.org >>>> >>>> Signed-off-by: Ori Kam >>>> --- >>>> app/test-pmd/cmdline_flow.c | 4 +++- >>>> 1 file changed, 3 insertions(+), 1 deletion(-) >>>> >>>> diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c >>>> index e99e24c..c2cc4c5 100644 >>>> --- a/app/test-pmd/cmdline_flow.c >>>> +++ b/app/test-pmd/cmdline_flow.c >>>> @@ -4576,7 +4576,9 @@ static int comp_set_raw_index(struct context *, >>> const struct token *, >>>> struct rte_flow_item_gre gre = { >>>> .protocol = rte_cpu_to_be_16(ETHER_TYPE_MPLS_UNICAST), >>>> }; >>>> - struct rte_flow_item_mpls mpls; >>>> + struct rte_flow_item_mpls mpls = { >>>> + .ttl = 0, >>>> + }; >>> >>> why not use "= {0};", the end result will be same, struct will be all zeroed out >>> in both case, "= {0};" makes the intention more obvious I think. >>> >> >> On some compilers this kind of initialization result in an error: >> error: missing braces around initializer > > As far as I remember, that is triggered with old compiler, when you are > initializing array of structs, or first element of the struct is an array (which > is the case for mpls struct), in that case ={{0}} was solving the issue. > > Anyway, I got the concern, the patch looks good to me. Also seems "={}" is working in that case, thanks to Stephen, it is cleaner than "={{0}}", what do you think about using "={}" ? > >> it looks like a known issue of GCC >> So I just prefer to init the relevant fields. >> >>>> uint8_t *header; >>>> int ret; >>>> >>>> >> >