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From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
To: Soumyadeep Hore <soumyadeep.hore@intel.com>,
	<bruce.richardson@intel.com>
Cc: <dev@dpdk.org>
Subject: Re: [PATCH v3 09/22] common/idpf: refactor size check macro
Date: Fri, 14 Jun 2024 14:21:44 +0200	[thread overview]
Message-ID: <8ee43aae-0c1b-4233-9f23-d771bb4a6385@intel.com> (raw)
In-Reply-To: <20240612035257.2245824-10-soumyadeep.hore@intel.com>

On 6/12/2024 5:52 AM, Soumyadeep Hore wrote:
> Instead of using 'divide by 0' to check the struct length,
> use the static_assert macro
> 
> Signed-off-by: Soumyadeep Hore <soumyadeep.hore@intel.com>
> ---
>   drivers/common/idpf/base/virtchnl2.h | 13 +++++--------
>   1 file changed, 5 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/common/idpf/base/virtchnl2.h b/drivers/common/idpf/base/virtchnl2.h
> index 1f59730297..f8b97f2e06 100644
> --- a/drivers/common/idpf/base/virtchnl2.h
> +++ b/drivers/common/idpf/base/virtchnl2.h
> @@ -41,15 +41,12 @@
>   /* State Machine error - Command sequence problem */
>   #define	VIRTCHNL2_STATUS_ERR_ESM	201
>   
> -/* These macros are used to generate compilation errors if a structure/union
> - * is not exactly the correct length. It gives a divide by zero error if the
> - * structure/union is not of the correct size, otherwise it creates an enum
> - * that is never used.
> +/* This macro is used to generate compilation errors if a structure
> + * is not exactly the correct length.
>    */
> -#define VIRTCHNL2_CHECK_STRUCT_LEN(n, X) enum virtchnl2_static_assert_enum_##X \
> -	{ virtchnl2_static_assert_##X = (n)/((sizeof(struct X) == (n)) ? 1 : 0) }
> -#define VIRTCHNL2_CHECK_UNION_LEN(n, X) enum virtchnl2_static_asset_enum_##X \
> -	{ virtchnl2_static_assert_##X = (n)/((sizeof(union X) == (n)) ? 1 : 0) }
> +#define VIRTCHNL2_CHECK_STRUCT_LEN(n, X)	\
> +	static_assert((n) == sizeof(struct X),	\
> +		      "Structure length does not match with the expected value")
>   

It appears that the patch also removed CHECK_UNION_LEN macro (presumably 
because it is unused and no longer needed). Would be good to add this to 
commit message.

>   /* New major set of opcodes introduced and so leaving room for
>    * old misc opcodes to be added in future. Also these opcodes may only

-- 
Thanks,
Anatoly


  reply	other threads:[~2024-06-14 12:22 UTC|newest]

Thread overview: 125+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-05-28  7:28 [PATCH 00/25] Update IDPF Base Driver Soumyadeep Hore
2024-05-28  7:28 ` [PATCH 01/25] common/idpf: added NVME CPF specific code with defines Soumyadeep Hore
2024-05-29 12:32   ` Bruce Richardson
2024-05-28  7:28 ` [PATCH 02/25] common/idpf: updated IDPF VF device ID Soumyadeep Hore
2024-05-28  7:28 ` [PATCH 03/25] common/idpf: update ADD QUEUE GROUPS offset Soumyadeep Hore
2024-05-29 12:38   ` Bruce Richardson
2024-05-28  7:28 ` [PATCH 04/25] common/idpf: update in PTP message validation Soumyadeep Hore
2024-05-29 13:03   ` Bruce Richardson
2024-05-28  7:28 ` [PATCH 05/25] common/idpf: added FLOW STEER capability and a vport flag Soumyadeep Hore
2024-05-28  7:28 ` [PATCH 06/25] common/idpf: moved the IDPF HW into API header file Soumyadeep Hore
2024-05-28  7:28 ` [PATCH 07/25] common/idpf: avoid defensive programming Soumyadeep Hore
2024-05-28  7:28 ` [PATCH 08/25] common/idpf: move related defines into enums Soumyadeep Hore
2024-05-28  7:28 ` [PATCH 09/25] common/idpf: add flex array support to virtchnl2 structures Soumyadeep Hore
2024-06-04  8:05 ` [PATCH v2 00/21] Update MEV TS Base Driver Soumyadeep Hore
2024-06-04  8:05   ` [PATCH v2 01/21] common/idpf: added NVME CPF specific code with defines Soumyadeep Hore
2024-06-04  8:05   ` [PATCH v2 02/21] common/idpf: updated IDPF VF device ID Soumyadeep Hore
2024-06-04  8:05   ` [PATCH v2 03/21] common/idpf: added new virtchnl2 capability and vport flag Soumyadeep Hore
2024-06-04  8:05   ` [PATCH v2 04/21] common/idpf: moved the idpf HW into API header file Soumyadeep Hore
2024-06-04  8:05   ` [PATCH v2 05/21] common/idpf: avoid defensive programming Soumyadeep Hore
2024-06-04  8:05   ` [PATCH v2 06/21] common/idpf: use BIT ULL for large bitmaps Soumyadeep Hore
2024-06-04  8:05   ` [PATCH v2 07/21] common/idpf: convert data type to 'le' Soumyadeep Hore
2024-06-04  8:05   ` [PATCH v2 08/21] common/idpf: compress RXDID mask definitions Soumyadeep Hore
2024-06-04  8:05   ` [PATCH v2 09/21] common/idpf: refactor size check macro Soumyadeep Hore
2024-06-04  8:06   ` [PATCH v2 10/21] common/idpf: update mask of Rx FLEX DESC ADV FF1 M Soumyadeep Hore
2024-06-04  8:06   ` [PATCH v2 11/21] common/idpf: use 'pad' and 'reserved' fields appropriately Soumyadeep Hore
2024-06-04  8:06   ` [PATCH v2 12/21] common/idpf: move related defines into enums Soumyadeep Hore
2024-06-04  8:06   ` [PATCH v2 13/21] common/idpf: avoid variable 0-init Soumyadeep Hore
2024-06-04  8:06   ` [PATCH v2 14/21] common/idpf: update in PTP message validation Soumyadeep Hore
2024-06-04  8:06   ` [PATCH v2 15/21] common/idpf: rename INLINE FLOW STEER to FLOW STEER Soumyadeep Hore
2024-06-04  8:06   ` [PATCH v2 16/21] common/idpf: add wmb before tail Soumyadeep Hore
2024-06-04  8:06   ` [PATCH v2 17/21] drivers: add flex array support and fix issues Soumyadeep Hore
2024-06-04  8:06   ` [PATCH v2 18/21] common/idpf: enable flow steer capability for vports Soumyadeep Hore
2024-06-04  8:06   ` [PATCH v2 19/21] common/idpf: add a new Tx context descriptor structure Soumyadeep Hore
2024-06-04  8:06   ` [PATCH v2 20/21] common/idpf: remove idpf common file Soumyadeep Hore
2024-06-04  8:06   ` [PATCH v2 21/21] drivers: adding type to idpf vc queue switch Soumyadeep Hore
2024-06-12  3:52   ` [PATCH v3 00/22] Update MEV TS Base Driver Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 01/22] common/idpf: added NVME CPF specific code with defines Soumyadeep Hore
2024-06-14 10:33       ` Burakov, Anatoly
2024-06-12  3:52     ` [PATCH v3 02/22] common/idpf: updated IDPF VF device ID Soumyadeep Hore
2024-06-14 10:36       ` Burakov, Anatoly
2024-06-12  3:52     ` [PATCH v3 03/22] common/idpf: added new virtchnl2 capability and vport flag Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 04/22] common/idpf: moved the idpf HW into API header file Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 05/22] common/idpf: avoid defensive programming Soumyadeep Hore
2024-06-14 12:16       ` Burakov, Anatoly
2024-06-12  3:52     ` [PATCH v3 06/22] common/idpf: use BIT ULL for large bitmaps Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 07/22] common/idpf: convert data type to 'le' Soumyadeep Hore
2024-06-14 12:19       ` Burakov, Anatoly
2024-06-12  3:52     ` [PATCH v3 08/22] common/idpf: compress RXDID mask definitions Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 09/22] common/idpf: refactor size check macro Soumyadeep Hore
2024-06-14 12:21       ` Burakov, Anatoly [this message]
2024-06-12  3:52     ` [PATCH v3 10/22] common/idpf: update mask of Rx FLEX DESC ADV FF1 M Soumyadeep Hore
2024-06-18 10:57       ` [PATCH v4 00/21] Update MEV TS Base Driver Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 01/21] common/idpf: updated IDPF VF device ID Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 02/21] common/idpf: added new virtchnl2 capability and vport flag Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 03/21] common/idpf: moved the idpf HW into API header file Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 04/21] common/idpf: avoid defensive programming Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 05/21] common/idpf: use BIT ULL for large bitmaps Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 06/21] common/idpf: convert data type to 'le' Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 07/21] common/idpf: compress RXDID mask definitions Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 08/21] common/idpf: refactor size check macro Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 09/21] common/idpf: update mask of Rx FLEX DESC ADV FF1 M Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 10/21] common/idpf: use 'pad' and 'reserved' fields appropriately Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 11/21] common/idpf: move related defines into enums Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 12/21] common/idpf: avoid variable 0-init Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 13/21] common/idpf: update in PTP message validation Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 14/21] common/idpf: rename INLINE FLOW STEER to FLOW STEER Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 15/21] common/idpf: add wmb before tail Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 16/21] drivers: add flex array support and fix issues Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 17/21] common/idpf: enable flow steer capability for vports Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 18/21] common/idpf: add a new Tx context descriptor structure Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 19/21] common/idpf: remove idpf common file Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 20/21] drivers: adding type to idpf vc queue switch Soumyadeep Hore
2024-06-18 10:57         ` [PATCH v4 21/21] doc: updated the documentation for cpfl PMD Soumyadeep Hore
2024-06-24  9:16           ` [PATCH v5 00/21] Update MEV TS Base Driver Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 01/21] common/idpf: updated IDPF VF device ID Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 02/21] common/idpf: added new virtchnl2 capability and vport flag Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 03/21] common/idpf: moved the idpf HW into API header file Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 04/21] common/idpf: avoid defensive programming Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 05/21] common/idpf: use BIT ULL for large bitmaps Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 06/21] common/idpf: convert data type to 'le' Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 07/21] common/idpf: compress RXDID mask definitions Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 08/21] common/idpf: refactor size check macro Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 09/21] common/idpf: update mask of Rx FLEX DESC ADV FF1 M Soumyadeep Hore
2024-06-28 14:16               ` Bruce Richardson
2024-06-24  9:16             ` [PATCH v5 10/21] common/idpf: use 'pad' and 'reserved' fields appropriately Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 11/21] common/idpf: move related defines into enums Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 12/21] common/idpf: avoid variable 0-init Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 13/21] common/idpf: update in PTP message validation Soumyadeep Hore
2024-06-28 14:33               ` Bruce Richardson
2024-06-24  9:16             ` [PATCH v5 14/21] common/idpf: rename INLINE FLOW STEER to FLOW STEER Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 15/21] common/idpf: add wmb before tail Soumyadeep Hore
2024-06-28 14:45               ` Bruce Richardson
2024-07-01 10:05                 ` Hore, Soumyadeep
2024-07-01  9:13               ` [PATCH v6 0/7] Update MEV TS Base Driver Soumyadeep Hore
2024-07-01  9:13                 ` [PATCH v6 1/7] common/idpf: add wmb before tail Soumyadeep Hore
2024-07-01  9:13                 ` [PATCH v6 2/7] drivers: adding macros for dynamic data structures Soumyadeep Hore
2024-07-01  9:13                 ` [PATCH v6 3/7] common/idpf: enable flow steer capability for vports Soumyadeep Hore
2024-07-01  9:13                 ` [PATCH v6 4/7] common/idpf: add a new Tx context descriptor structure Soumyadeep Hore
2024-07-01  9:13                 ` [PATCH v6 5/7] common/idpf: remove idpf common file Soumyadeep Hore
2024-07-01  9:13                 ` [PATCH v6 6/7] drivers: adding config queue types for virtchnl2 message Soumyadeep Hore
2024-07-01  9:13                 ` [PATCH v6 7/7] doc: updated the documentation for cpfl PMD Soumyadeep Hore
2024-07-01 11:23                 ` [PATCH v6 0/7] Update MEV TS Base Driver Bruce Richardson
2024-06-24  9:16             ` [PATCH v5 16/21] drivers: add flex array support and fix issues Soumyadeep Hore
2024-06-28 14:50               ` Bruce Richardson
2024-07-01 10:09                 ` Hore, Soumyadeep
2024-06-24  9:16             ` [PATCH v5 17/21] common/idpf: enable flow steer capability for vports Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 18/21] common/idpf: add a new Tx context descriptor structure Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 19/21] common/idpf: remove idpf common file Soumyadeep Hore
2024-06-24  9:16             ` [PATCH v5 20/21] drivers: adding type to idpf vc queue switch Soumyadeep Hore
2024-06-28 14:53               ` Bruce Richardson
2024-06-24  9:16             ` [PATCH v5 21/21] doc: updated the documentation for cpfl PMD Soumyadeep Hore
2024-06-28 14:58             ` [PATCH v5 00/21] Update MEV TS Base Driver Bruce Richardson
2024-06-12  3:52     ` [PATCH v3 11/22] common/idpf: use 'pad' and 'reserved' fields appropriately Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 12/22] common/idpf: move related defines into enums Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 13/22] common/idpf: avoid variable 0-init Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 14/22] common/idpf: update in PTP message validation Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 15/22] common/idpf: rename INLINE FLOW STEER to FLOW STEER Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 16/22] common/idpf: add wmb before tail Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 17/22] drivers: add flex array support and fix issues Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 18/22] common/idpf: enable flow steer capability for vports Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 19/22] common/idpf: add a new Tx context descriptor structure Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 20/22] common/idpf: remove idpf common file Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 21/22] drivers: adding type to idpf vc queue switch Soumyadeep Hore
2024-06-12  3:52     ` [PATCH v3 22/22] doc: updated the documentation for cpfl PMD Soumyadeep Hore
2024-06-14 12:48     ` [PATCH v3 00/22] Update MEV TS Base Driver Burakov, Anatoly

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