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 E91AAA0526 for ; Tue, 21 Jul 2020 02:06:04 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id CAD841BFC4; Tue, 21 Jul 2020 02:06:04 +0200 (CEST) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by dpdk.org (Postfix) with ESMTP id EA635E07; Tue, 21 Jul 2020 02:05:59 +0200 (CEST) IronPort-SDR: ao1vhYEjCFvqP5HSdjbQPMpxd+zLmM8jMZgp2am67LYf5fsD16pGorxKTE6Sf1GM6EaobKO03z ExJHn8t5I5gQ== X-IronPort-AV: E=McAfee;i="6000,8403,9688"; a="234882593" X-IronPort-AV: E=Sophos;i="5.75,375,1589266800"; d="scan'208";a="234882593" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jul 2020 17:05:58 -0700 IronPort-SDR: WeuqGLhFHdEQd2M7UGAvJkVOY3Qlilq6JhmAqcgZB1TmoXY/Y6/zIc/yi6dcY/50FZzmZhj9Gq dewiPiHTkZFA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,375,1589266800"; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH] net: fix compilation with pedantic enabled X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" On 7/16/2020 1:12 PM, Raslan Darawsheh wrote: > when trying to compile rte_mpls with pedantic enabled, > it will complain about bit field defintion. > error: type of bit-field 'bs' is a GCC extension [-Werror=pedantic] > error: type of bit-field 'tc' is a GCC extension [-Werror=pedantic] > error: type of bit-field 'tag_lsb' is a GCC extension [-Werror=pedantic] ' I tried to reproduce by adding to '-pedantic' to 'rte_net.c' (which uses 'rte_mpls.h') but not able to get the warning. Is this happen with specific version of the compiler? > > This fixes the compilation error. > > Fixes: e480cf487a0d ("net: add MPLS header structure") > Cc: olivier.matz@6wind.com > Cc: stable@dpdk.org > > Signed-off-by: Raslan Darawsheh > --- > lib/librte_net/rte_mpls.h | 12 ++++++------ > 1 file changed, 6 insertions(+), 6 deletions(-) > > diff --git a/lib/librte_net/rte_mpls.h b/lib/librte_net/rte_mpls.h > index db91707..ecd1f64 100644 > --- a/lib/librte_net/rte_mpls.h > +++ b/lib/librte_net/rte_mpls.h > @@ -24,13 +24,13 @@ extern "C" { > struct rte_mpls_hdr { > uint16_t tag_msb; /**< Label(msb). */ > #if RTE_BYTE_ORDER == RTE_BIG_ENDIAN > - uint8_t tag_lsb:4; /**< Label(lsb). */ > - uint8_t tc:3; /**< Traffic class. */ > - uint8_t bs:1; /**< Bottom of stack. */ > + uint32_t tag_lsb:4; /**< Label(lsb). */ > + uint32_t tc:3; /**< Traffic class. */ > + uint32_t bs:1; /**< Bottom of stack. */ > #else > - uint8_t bs:1; /**< Bottom of stack. */ > - uint8_t tc:3; /**< Traffic class. */ > - uint8_t tag_lsb:4; /**< label(lsb) */ > + uint32_t bs:1; /**< Bottom of stack. */ > + uint32_t tc:3; /**< Traffic class. */ > + uint32_t tag_lsb:4; /**< label(lsb) */ > #endif > uint8_t ttl; /**< Time to live. */ > } __rte_packed; The struct size keeps same after change, do you know if this behavior is part of standard and guaranteed?