From: Long Li <longli@microsoft.com>
To: Erick Archer <erick.archer@outlook.com>,
Ajay Sharma <sharmaajay@microsoft.com>,
KY Srinivasan <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Kees Cook <keescook@chromium.org>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Bill Wendling <morbo@google.com>,
Justin Stitt <justinstitt@google.com>,
Jason Gunthorpe <jgg@ziepe.ca>, Leon Romanovsky <leon@kernel.org>,
Shradha Gupta <shradhagupta@linux.microsoft.com>,
Konstantin Taranov <kotaranov@microsoft.com>
Cc: "linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
"linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-hardening@vger.kernel.org"
<linux-hardening@vger.kernel.org>,
"llvm@lists.linux.dev" <llvm@lists.linux.dev>
Subject: RE: [PATCH v3 1/3] net: mana: Add flex array to struct mana_cfg_rx_steer_req_v2
Date: Mon, 8 Apr 2024 19:42:49 +0000 [thread overview]
Message-ID: <SJ1PR21MB3457B14701CEEEA83BAB7789CE002@SJ1PR21MB3457.namprd21.prod.outlook.com> (raw)
In-Reply-To: <AS8PR02MB7237E2900247571C9CB84C678B022@AS8PR02MB7237.eurprd02.prod.outlook.com>
> Subject: [PATCH v3 1/3] net: mana: Add flex array to struct
> mana_cfg_rx_steer_req_v2
>
> The "struct mana_cfg_rx_steer_req_v2" uses a dynamically sized set of trailing
> elements. Specifically, it uses a "mana_handle_t" array. So, use the preferred way
> in the kernel declaring a flexible array [1].
>
> At the same time, prepare for the coming implementation by GCC and Clang of
> the __counted_by attribute. Flexible array members annotated with
> __counted_by can have their accesses bounds-checked at run-time via
> CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE
> (for strcpy/memcpy-family functions).
>
> This is a previous step to refactor the two consumers of this structure.
>
> drivers/infiniband/hw/mana/qp.c
> drivers/net/ethernet/microsoft/mana/mana_en.c
>
> The ultimate goal is to avoid the open-coded arithmetic in the memory allocator
> functions [2] using the "struct_size" macro.
>
> Link:
> https://www.ker/
> nel.org%2Fdoc%2Fhtml%2Fnext%2Fprocess%2Fdeprecated.html%23zero-length-
> and-one-element-
> arrays&data=05%7C02%7Clongli%40microsoft.com%7Ce75134553ebf4bca87bd0
> 8dc564acf8e%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C63848012
> 6558204741%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV
> 2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=%2B8k08
> SWrKXJiDfQ2cal65b1K1sElRB8x0oA5EFeUqbw%3D&reserved=0 [1]
> Link:
> https://www.ker/
> nel.org%2Fdoc%2Fhtml%2Fnext%2Fprocess%2Fdeprecated.html%23open-coded-
> arithmetic-in-allocator-
> arguments&data=05%7C02%7Clongli%40microsoft.com%7Ce75134553ebf4bca8
> 7bd08dc564acf8e%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C6384
> 80126558211762%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJ
> QIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=h0
> wsUICWnJwn1Nd5fr%2B0z8SXZIqXQrNWKTEbVlB%2BNI0%3D&reserved=0 [2]
> Signed-off-by: Erick Archer <erick.archer@outlook.com>
Reviewed-by: Long Li <longli@microsoft.com>
next prev parent reply other threads:[~2024-04-08 19:42 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240406142337.16241-1-erick.archer@outlook.com>
2024-04-06 14:23 ` [PATCH v3 1/3] net: mana: Add flex array to struct mana_cfg_rx_steer_req_v2 Erick Archer
2024-04-08 19:42 ` Long Li [this message]
2024-04-08 21:34 ` Justin Stitt
2024-04-08 21:43 ` Justin Stitt
2024-04-06 14:23 ` [PATCH v3 2/3] RDMA/mana_ib: Prefer struct_size over open coded arithmetic Erick Archer
2024-04-08 19:42 ` Long Li
2024-04-08 21:38 ` Justin Stitt
2024-04-06 14:23 ` [PATCH v3 3/3] net: mana: Avoid " Erick Archer
2024-04-08 21:45 ` Justin Stitt
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