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From: Hemant Agrawal <hemant.agrawal@nxp.com>
To: Tyler Retzlaff <roretzla@linux.microsoft.com>,
	Stephen Hemminger <stephen@networkplumber.org>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
	Sachin Saxena <sachin.saxena@nxp.com>,
	Gagandeep Singh <G.Singh@nxp.com>
Subject: RE: [PATCH v4 10/10] common/dpaxx: remove zero length array
Date: Wed, 22 Nov 2023 07:23:36 +0000	[thread overview]
Message-ID: <PAXPR04MB9328CC0BB2AB678B5C97329E89BAA@PAXPR04MB9328.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <20231121171837.GA7518@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net>



> -----Original Message-----
> From: Tyler Retzlaff <roretzla@linux.microsoft.com>
> Sent: Tuesday, November 21, 2023 10:49 PM
> To: Stephen Hemminger <stephen@networkplumber.org>
> Cc: Hemant Agrawal <hemant.agrawal@nxp.com>; dev@dpdk.org; Sachin
> Saxena <sachin.saxena@nxp.com>; Gagandeep Singh <G.Singh@nxp.com>
> Subject: Re: [PATCH v4 10/10] common/dpaxx: remove zero length array
> Importance: High
> 
> On Tue, Nov 21, 2023 at 08:46:41AM -0800, Stephen Hemminger wrote:
> > On Tue, 21 Nov 2023 10:49:59 +0000
> > Hemant Agrawal <hemant.agrawal@nxp.com> wrote:
> >
> > > >  struct ipsec_encap_pdb {
> > > >  	uint32_t options;
> > > > @@ -350,7 +349,6 @@ struct ipsec_encap_pdb {
> > > >  	};
> > > >  	uint32_t spi;
> > > >  	uint32_t ip_hdr_len;
> > > > -	uint8_t ip_hdr[0];
> > > [Hemant] This should be replaced with
> > > 	uint8_t ip_hdr[];
> > > >  };
> > > >
> >
> > That won't work because the structure is embedded in another struct
> > and then clang will correctly report an error.
> 
> Hemant if the field is not referenced what's the harm in removing it?

It is being used indirectly, e.g. dpaa_sec.h usages it for ip address description preparation for the hardware.

            struct ipsec_encap_pdb encap_pdb;
            union {
                struct ip ip4_hdr;
                struct rte_ipv6_hdr ip6_hdr;
            };

We need to change it, however in the interim, I will like to add "-Wno-gnu-variable-sized-type-not-at-end" for both caam_jr and dpaa_sec to avoid this warning.

  reply	other threads:[~2023-11-22  7:23 UTC|newest]

Thread overview: 84+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-13 21:51 [PATCH 0/7] replace zero length arrays Stephen Hemminger
2023-01-13 21:51 ` [PATCH 1/7] member: replace zero length array with flex array Stephen Hemminger
2023-01-14  0:19   ` Tyler Retzlaff
2023-01-14  0:36     ` Stephen Hemminger
2023-01-14  0:42       ` Tyler Retzlaff
2023-01-13 21:52 ` [PATCH 2/7] cryptodev: " Stephen Hemminger
2023-01-13 21:52 ` [PATCH 3/7] security: " Stephen Hemminger
2023-01-13 21:52 ` [PATCH 4/7] mlx5: " Stephen Hemminger
2023-01-14 17:08   ` Stephen Hemminger
2023-03-06 13:29     ` Slava Ovsiienko
2023-01-13 21:52 ` [PATCH 5/7] nfp: " Stephen Hemminger
2023-01-15 15:22   ` Niklas Söderlund
2023-01-13 21:52 ` [PATCH 6/7] enic: " Stephen Hemminger
2023-01-14  1:12   ` John Daley (johndale)
2023-01-13 21:52 ` [PATCH 7/7] dpaax: " Stephen Hemminger
2023-01-15 11:59   ` Hemant Agrawal
2023-01-14 10:43 ` [PATCH 0/7] replace zero length arrays Morten Brørup
2023-11-17  4:03 ` [PATCH v2 00/10] " Stephen Hemminger
2023-11-17  4:03   ` [PATCH v2 01/10] member: replace zero length array with flex array Stephen Hemminger
2023-11-17  4:17     ` Tyler Retzlaff
2023-11-17  4:03   ` [PATCH v2 02/10] cryptodev: " Stephen Hemminger
2023-11-17  4:18     ` Tyler Retzlaff
2023-11-17  4:03   ` [PATCH v2 03/10] security: " Stephen Hemminger
2023-11-17  4:18     ` Tyler Retzlaff
2023-11-17  4:03   ` [PATCH v2 04/10] pipeline: " Stephen Hemminger
2023-11-17  4:19     ` Tyler Retzlaff
2023-11-17  4:03   ` [PATCH v2 05/10] net/nfp: " Stephen Hemminger
2023-11-17  4:19     ` Tyler Retzlaff
2023-11-17  4:03   ` [PATCH v2 06/10] net/enic: " Stephen Hemminger
2023-11-17  4:20     ` Tyler Retzlaff
2023-11-17  4:03   ` [PATCH v2 07/10] net/mlx5: " Stephen Hemminger
2023-11-17  4:20     ` Tyler Retzlaff
2023-11-17  4:03   ` [PATCH v2 08/10] pdcp: " Stephen Hemminger
2023-11-17  4:20     ` Tyler Retzlaff
2023-11-17  5:28     ` [EXT] " Anoob Joseph
2023-11-17  4:03   ` [PATCH v2 09/10] net/cpfl: " Stephen Hemminger
2023-11-17  4:20     ` Tyler Retzlaff
2023-11-17  4:03   ` [PATCH v2 10/10] common/dpaxx: " Stephen Hemminger
2023-11-17  4:21     ` Tyler Retzlaff
2023-11-17  8:31   ` [PATCH v2 00/10] replace zero length arrays Morten Brørup
2023-11-17 16:18     ` Stephen Hemminger
2023-11-17 19:59       ` Tyler Retzlaff
2023-11-20 17:06 ` [PATCH v4 00/10] Replace " Stephen Hemminger
2023-11-20 17:06   ` [PATCH v4 01/10] member: replace zero length array with flex array Stephen Hemminger
2023-11-20 17:06   ` [PATCH v4 02/10] cryptodev: " Stephen Hemminger
2023-11-21  5:29     ` [EXT] " Anoob Joseph
2023-11-20 17:06   ` [PATCH v4 03/10] security: " Stephen Hemminger
2023-11-21  5:30     ` [EXT] " Anoob Joseph
2023-11-20 17:06   ` [PATCH v4 04/10] pipeline: " Stephen Hemminger
2023-11-20 17:07   ` [PATCH v4 05/10] net/nfp: " Stephen Hemminger
2023-11-21  1:14     ` Chaoyong He
2023-11-20 17:07   ` [PATCH v4 06/10] net/enic: " Stephen Hemminger
2023-11-20 17:07   ` [PATCH v4 07/10] net/mlx5: " Stephen Hemminger
2023-11-23 17:54     ` Dariusz Sosnowski
2023-11-20 17:07   ` [PATCH v4 08/10] pdcp: " Stephen Hemminger
2023-11-20 17:07   ` [PATCH v4 09/10] net/cpfl: " Stephen Hemminger
2023-11-20 17:07   ` [PATCH v4 10/10] common/dpaxx: remove zero length array Stephen Hemminger
2023-11-21 10:49     ` Hemant Agrawal
2023-11-21 16:46       ` Stephen Hemminger
2023-11-21 17:01         ` Stephen Hemminger
2023-11-21 17:18         ` Tyler Retzlaff
2023-11-22  7:23           ` Hemant Agrawal [this message]
2023-11-23  1:43             ` Stephen Hemminger
2023-11-23 19:18             ` Stephen Hemminger
2023-11-28  6:43               ` Hemant Agrawal
2023-11-21  7:26   ` [PATCH v4 00/10] Replace zero length arrays Morten Brørup
2023-11-21  8:30     ` fengchengwen
2023-11-29  2:39 ` [PATCH v5 " Stephen Hemminger
2023-11-29  2:39   ` [PATCH v5 01/10] member: replace zero length array with flex array Stephen Hemminger
2023-11-29  2:39   ` [PATCH v5 02/10] cryptodev: " Stephen Hemminger
2023-11-29  2:39   ` [PATCH v5 03/10] security: " Stephen Hemminger
2023-11-29  2:39   ` [PATCH v5 04/10] pipeline: " Stephen Hemminger
2023-11-29  2:39   ` [PATCH v5 05/10] net/nfp: " Stephen Hemminger
2023-11-30  1:21     ` Chaoyong He
2023-11-29  2:39   ` [PATCH v5 06/10] net/enic: " Stephen Hemminger
2023-11-29  2:39   ` [PATCH v5 07/10] net/mlx5: " Stephen Hemminger
2024-01-23  9:44     ` Thomas Monjalon
2024-01-23 10:28       ` Thomas Monjalon
2024-01-23 11:18         ` Dariusz Sosnowski
2023-11-29  2:39   ` [PATCH v5 08/10] pdcp: " Stephen Hemminger
2023-11-29  2:39   ` [PATCH v5 09/10] net/cpfl: " Stephen Hemminger
2023-11-29  2:39   ` [PATCH v5 10/10] common/dpaxx: replace zero length array Stephen Hemminger
2024-01-23  9:42     ` Thomas Monjalon
2024-01-23 10:48   ` [PATCH v5 00/10] Replace zero length arrays Thomas Monjalon

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