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 92DE7A04FA; Mon, 3 Feb 2020 11:21:34 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id A67781BFE2; Mon, 3 Feb 2020 11:21:33 +0100 (CET) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 090801BFE1; Mon, 3 Feb 2020 11:21:31 +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 orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 Feb 2020 02:21:30 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,397,1574150400"; d="scan'208";a="248676545" 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 02:21:28 -0800 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> 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] 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 2/2/2020 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. > it looks like a known issue of GCC > So I just prefer to init the relevant fields. > >>> uint8_t *header; >>> int ret; >>> >>> >