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From: Bruce Richardson <bruce.richardson@intel.com>
To: Tyler Retzlaff <roretzla@linux.microsoft.com>
Cc: <dev@dpdk.org>, Akhil Goyal <gakhil@marvell.com>,
	Aman Singh <aman.deep.singh@intel.com>,
	Anatoly Burakov <anatoly.burakov@intel.com>,
	Byron Marohn <byron.marohn@intel.com>,
	Conor Walsh <conor.walsh@intel.com>,
	Cristian Dumitrescu <cristian.dumitrescu@intel.com>,
	Dariusz Sosnowski <dsosnowski@nvidia.com>,
	David Hunt <david.hunt@intel.com>,
	Jerin Jacob <jerinj@marvell.com>,
	Jingjing Wu <jingjing.wu@intel.com>,
	Kirill Rybalchenko <kirill.rybalchenko@intel.com>,
	Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>,
	Matan Azrad <matan@nvidia.com>, Ori Kam <orika@nvidia.com>,
	Radu Nicolau <radu.nicolau@intel.com>,
	Ruifeng Wang <ruifeng.wang@arm.com>,
	Sameh Gobriel <sameh.gobriel@intel.com>,
	"Sivaprasad Tummala" <sivaprasad.tummala@amd.com>,
	Suanming Mou <suanmingm@nvidia.com>,
	Sunil Kumar Kori <skori@marvell.com>,
	Vamsi Attunuru <vattunuru@marvell.com>,
	 Viacheslav Ovsiienko <viacheslavo@nvidia.com>,
	Vladimir Medvedkin <vladimir.medvedkin@intel.com>,
	Yipeng Wang <yipeng1.wang@intel.com>,
	"Yuying Zhang" <Yuying.Zhang@intel.com>
Subject: Re: [PATCH 09/15] net/iavf: pack structures when building with MSVC
Date: Thu, 21 Mar 2024 16:26:09 +0000	[thread overview]
Message-ID: <Zfxfoa5_Utk523Gq@bricha3-mobl1.ger.corp.intel.com> (raw)
In-Reply-To: <1710968771-16435-10-git-send-email-roretzla@linux.microsoft.com>

On Wed, Mar 20, 2024 at 02:06:05PM -0700, Tyler Retzlaff wrote:
> Add __rte_msvc_pushpack(1) to all __rte_packed structs to cause packing
> when building with MSVC.
> 
> Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
> ---
>  drivers/net/iavf/iavf_ipsec_crypto.h | 3 +++
>  drivers/net/iavf/iavf_rxtx.c         | 1 +
>  2 files changed, 4 insertions(+)
> 
> diff --git a/drivers/net/iavf/iavf_ipsec_crypto.h b/drivers/net/iavf/iavf_ipsec_crypto.h
> index 49f9202..36ced50 100644
> --- a/drivers/net/iavf/iavf_ipsec_crypto.h
> +++ b/drivers/net/iavf/iavf_ipsec_crypto.h
> @@ -11,12 +11,14 @@
>  
>  
>  
> +__rte_msvc_pack
>  struct iavf_tx_ipsec_desc {
>  	union {
>  		struct {
>  			__le64 qw0;
>  			__le64 qw1;
>  		};
> +		__rte_msvc_pack
>  		struct {
>  			__le16 l4payload_length;
>  			__le32 esn;

Looking at the structure, I believe only the inner packed attribute is
necessary. However, given that we need packed attributes, for safety, let's
keep them both.

> @@ -84,6 +86,7 @@ enum iavf_ipsec_iv_len {
>   * transmit data path. Parameters set for session by calling
>   * rte_security_set_pkt_metadata() API.
>   */
> +__rte_msvc_pack
>  struct iavf_ipsec_crypto_pkt_metadata {
>  	uint32_t sa_idx;                /* SA hardware index (20b/4B) */
>  

This is exactly 16-bytes in size, with all members explicitly sized and
properly aligned. Therefore we can drop the packed atttribute.

> diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx.c
> index 0a5246d..ba0fa6f 100644
> --- a/drivers/net/iavf/iavf_rxtx.c
> +++ b/drivers/net/iavf/iavf_rxtx.c
> @@ -50,6 +50,7 @@
>  static uint16_t vxlan_gpe_udp_port = RTE_VXLAN_GPE_DEFAULT_PORT;
>  static uint16_t geneve_udp_port = RTE_GENEVE_DEFAULT_PORT;
>  
> +__rte_msvc_pack
>  struct simple_gre_hdr {
>  	uint16_t flags;
>  	uint16_t proto;

Two 16-bit fields only, so no need to pack this struct either.

/Bruce

  reply	other threads:[~2024-03-21 16:27 UTC|newest]

Thread overview: 149+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-20 21:05 [PATCH 00/15] fix packing of structs " Tyler Retzlaff
2024-03-20 21:05 ` [PATCH 01/15] eal: provide pack start macro for MSVC Tyler Retzlaff
2024-03-20 21:05 ` [PATCH 02/15] eal: pack structures when building with MSVC Tyler Retzlaff
2024-03-21 16:02   ` Bruce Richardson
2024-03-20 21:05 ` [PATCH 03/15] net: " Tyler Retzlaff
2024-10-07  1:14   ` Stephen Hemminger
2024-03-20 21:06 ` [PATCH 04/15] common/iavf: " Tyler Retzlaff
2024-03-20 21:06 ` [PATCH 05/15] common/idpf: " Tyler Retzlaff
2024-03-20 21:06 ` [PATCH 06/15] common/mlx5: " Tyler Retzlaff
2024-03-20 21:06 ` [PATCH 07/15] dma/ioat: " Tyler Retzlaff
2024-03-21 16:13   ` Bruce Richardson
2024-03-27 22:51     ` Tyler Retzlaff
2024-03-20 21:06 ` [PATCH 08/15] net/i40e: " Tyler Retzlaff
2024-03-20 21:06 ` [PATCH 09/15] net/iavf: " Tyler Retzlaff
2024-03-21 16:26   ` Bruce Richardson [this message]
2024-03-20 21:06 ` [PATCH 10/15] net/ice: " Tyler Retzlaff
2024-03-20 21:06 ` [PATCH 11/15] net/mlx5: " Tyler Retzlaff
2024-03-20 21:06 ` [PATCH 12/15] net/octeon_ep: " Tyler Retzlaff
2024-03-20 21:06 ` [PATCH 13/15] app/testpmd: " Tyler Retzlaff
2024-03-21 16:28   ` Bruce Richardson
2024-03-20 21:06 ` [PATCH 14/15] app/test: " Tyler Retzlaff
2024-03-20 21:06 ` [PATCH 15/15] examples: " Tyler Retzlaff
2024-03-21 16:31   ` Bruce Richardson
2024-03-21 15:32 ` [PATCH 00/15] fix packing of structs " Stephen Hemminger
2024-03-21 15:46   ` Tyler Retzlaff
2024-03-27 23:09 ` [PATCH v2 " Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 01/15] eal: provide pack start macro for MSVC Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 02/15] eal: pack structures when building with MSVC Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 03/15] net: " Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 04/15] common/iavf: " Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 05/15] common/idpf: " Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 06/15] common/mlx5: " Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 07/15] dma/ioat: " Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 08/15] net/i40e: " Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 09/15] net/iavf: " Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 10/15] net/ice: " Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 11/15] net/mlx5: " Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 12/15] net/octeon_ep: " Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 13/15] app/testpmd: " Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 14/15] app/test: " Tyler Retzlaff
2024-03-27 23:09   ` [PATCH v2 15/15] examples: " Tyler Retzlaff
2024-04-15 23:51 ` [PATCH v3 00/16] fix packing of structs " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 01/16] eal: provide pack start macro for MSVC Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 02/16] eal: pack structures when building with MSVC Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 03/16] net: " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 04/16] common/iavf: " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 05/16] common/idpf: " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 06/16] common/mlx5: " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 07/16] dma/ioat: " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 08/16] net/i40e: " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 09/16] net/iavf: " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 10/16] net/ice: " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 11/16] net/mlx5: " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 12/16] net/octeon_ep: " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 13/16] app/testpmd: " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 14/16] app/test: " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 15/16] examples: " Tyler Retzlaff
2024-04-15 23:51   ` [PATCH v3 16/16] crypto/mlx5: " Tyler Retzlaff
2024-04-16  0:04 ` [PATCH v4 00/16] fix packing of structs " Tyler Retzlaff
2024-04-16  0:04   ` [PATCH v4 01/16] eal: provide pack start macro for MSVC Tyler Retzlaff
2024-04-16  0:04   ` [PATCH v4 02/16] eal: pack structures when building with MSVC Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 03/16] net: " Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 04/16] common/iavf: " Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 05/16] common/idpf: " Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 06/16] common/mlx5: " Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 07/16] dma/ioat: " Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 08/16] net/i40e: " Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 09/16] net/iavf: " Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 10/16] net/ice: " Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 11/16] net/mlx5: " Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 12/16] net/octeon_ep: " Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 13/16] app/testpmd: " Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 14/16] app/test: " Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 15/16] examples: " Tyler Retzlaff
2024-04-16  0:05   ` [PATCH v4 16/16] crypto/mlx5: " Tyler Retzlaff
2024-11-19  4:35 ` [PATCH v5 00/16] fix packing of structs " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 01/16] eal: provide pack start macro for MSVC Andre Muezerie
2024-11-19  8:32     ` Morten Brørup
2024-11-19 11:00       ` Konstantin Ananyev
2024-11-19 16:23         ` Andre Muezerie
2024-11-21 19:39       ` Andre Muezerie
2024-11-21 20:51         ` Thomas Monjalon
2024-11-22  0:11           ` Andre Muezerie
2024-11-22  8:13             ` Morten Brørup
2024-11-25 22:15               ` Andre Muezerie
2024-12-05  0:20       ` Tyler Retzlaff
2024-11-19  4:35   ` [PATCH v5 02/16] eal: pack structures when building with MSVC Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 03/16] net: " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 04/16] common/iavf: " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 05/16] common/idpf: " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 06/16] common/mlx5: " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 07/16] dma/ioat: " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 08/16] net/i40e: " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 09/16] net/iavf: " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 10/16] net/ice: " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 11/16] net/mlx5: " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 12/16] net/octeon_ep: " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 13/16] app/testpmd: " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 14/16] app/test: " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 15/16] examples: " Andre Muezerie
2024-11-19  4:35   ` [PATCH v5 16/16] crypto/mlx5: " Andre Muezerie
2024-11-20 21:13   ` [PATCH v5 00/16] fix packing of structs " Patrick Robb
2024-11-27  0:52 ` [PATCH v6 00/30] " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 01/30] devtools: check packed attributes Andre Muezerie
2024-12-05  0:16     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 02/30] eal/include: add new packing macros Andre Muezerie
2024-12-05  0:09     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 03/30] app/test-pmd: remove unnecessary packed attributes Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 04/30] app/test: replace " Andre Muezerie
2024-12-05  0:21     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 05/30] doc/guides: " Andre Muezerie
2024-12-05  0:12     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 06/30] drivers/baseband: " Andre Muezerie
2024-12-05  0:23     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 07/30] drivers/bus: " Andre Muezerie
2024-12-05  0:25     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 08/30] drivers/common: " Andre Muezerie
2024-12-05  0:26     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 09/30] drivers/compress: " Andre Muezerie
2024-12-05  0:26     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 10/30] drivers/crypto: " Andre Muezerie
2024-12-05  0:27     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 11/30] drivers/dma: " Andre Muezerie
2024-12-05  0:28     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 12/30] drivers/event: " Andre Muezerie
2024-12-05  0:28     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 13/30] drivers/mempool: " Andre Muezerie
2024-12-05  0:51     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 14/30] drivers/net: " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 15/30] drivers/raw: " Andre Muezerie
2024-12-05  0:51     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 16/30] drivers/regex: " Andre Muezerie
2024-12-05  0:52     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 17/30] drivers/vdpa: " Andre Muezerie
2024-12-05  0:54     ` Tyler Retzlaff
2024-11-27  0:52   ` [PATCH v6 18/30] examples/common: " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 19/30] examples/ip-pipeline: remove " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 20/30] examples/ipsec_secgw: replace " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 21/30] examples/l3fwd-power: " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 22/30] examples/l3fwd: " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 23/30] examples/ptpclient: " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 24/30] examples/vhost_blk: " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 25/30] lib/eal: " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 26/30] lib/ipsec: " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 27/30] lib/net: " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 28/30] lib/pipeline: " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 29/30] lib/vhost: " Andre Muezerie
2024-11-27  0:52   ` [PATCH v6 30/30] lib/eal: remove __rte_packed Andre Muezerie
2024-12-05  0:11     ` Tyler Retzlaff

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