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Thu, 22 May 2025 14:42:19 -0700 From: Tariq Toukan To: "David S. Miller" , Jakub Kicinski , Paolo Abeni , Eric Dumazet , "Andrew Lunn" CC: Saeed Mahameed , Leon Romanovsky , Tariq Toukan , Richard Cochran , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , , , , , Moshe Shemesh , Mark Bloch , Gal Pressman , Cosmin Ratiu , Dragos Tatulea Subject: [PATCH net-next V2 02/11] net: Add skb_can_coalesce for netmem Date: Fri, 23 May 2025 00:41:17 +0300 Message-ID: <1747950086-1246773-3-git-send-email-tariqt@nvidia.com> X-Mailer: git-send-email 2.8.0 In-Reply-To: <1747950086-1246773-1-git-send-email-tariqt@nvidia.com> References: <1747950086-1246773-1-git-send-email-tariqt@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000E9D3:EE_|PH7PR12MB9152:EE_ X-MS-Office365-Filtering-Correlation-Id: 46d0492f-2917-4c2b-fa85-08dd9979920d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|82310400026|376014|7416014|36860700013; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?waCDSyvyYJvQy9YTyfhnVkzFOMbwLMaRUMK8PZ3Co59T6KXrqdLLG2cBfhb3?= =?us-ascii?Q?YtiGSihCYFhvPdRzhRthaPjmaAyB32k4T6VI+iZ/yahHLZeEyASFjeupaHjU?= =?us-ascii?Q?OJY7847XI3hOX0WjKrAPBnggf8hsCIWJgo5x3jD8LVEOrljfcghpaNtJKDYn?= =?us-ascii?Q?TocAKicrAxkV3pOqwyMgD2+PljlqFYEay9Ots5xUKmOnjoGocoq9PWsPjK9x?= =?us-ascii?Q?KP9qneCPhOcxl0CfuK4dms8Euu/9jJBhYKaJlTAjmzSFB3twRcSRTas8page?= =?us-ascii?Q?SKpt8Zmty9olAgIlQcQFyiU8LdfgonjfhATAsVt0/sW0FWVDx1XIiyEsLICa?= =?us-ascii?Q?TeM40SJYw34CCVCK1DswT9vdeWy6BvVIrQrfj8RVmwnqKm44M/vMhWuIqA+P?= =?us-ascii?Q?CO8jbjE8wi8pUetTbnGE2Y++4jHBU7HWLJ2DAdvnJjA3LZDeAEus7Gf3t86m?= =?us-ascii?Q?m6lDrIOz/xfui+mDO/Zy0UMfVzgK/4MJmXBL3wxvbtdnP5CdSlnnDIAPTCa+?= =?us-ascii?Q?O5yzYVQiSjNAvGPUkbzT0YgKI5ZzwaZNk+jDwUKrK68TB4a5S7ADB79Hq8Qk?= =?us-ascii?Q?sNwxmqnSl/z8Yu+XFo4q1DTQz3nl1/2DvASHPY8jYp3lW8/4pO7D6zPeI/fM?= =?us-ascii?Q?MduOa5pO3Flpv3FQDMWgw7yVHEeaxGf1DOfNd/s3MQ/FPumQbMEJJufcVIp+?= =?us-ascii?Q?ZLF47djhS6QNelw2lFWOZD7ygk7azz++5Pgl4aPT9wUrl5+yszZUcJ4xTqor?= =?us-ascii?Q?jkIro5MkNGUx3l9b1ABVK39/WG0wM2opRK5HYxMyJBISzRGqV7T6FMh9XpKO?= =?us-ascii?Q?ZPp4XfQ0FPdTqESxskzjjDlgTrcfX2OZOH8AOB0od+1xtuBacFELrH2M+eKc?= =?us-ascii?Q?rubwh/XbamiRSGa90skrWVsDZCswOdTZb3czU9XD0xfKACHKdUwKxo+rZMsW?= =?us-ascii?Q?o4ud70gdUAOjQ54EXc2s76bxue+0V6hMafXIAxWe14SPWVrZamFsuEgs4B5q?= =?us-ascii?Q?vGbR7xO5KtiRonQKpMq7DEakAda9gBI0QO62rU5XdRCFgjfnm30DiDf0xXWf?= =?us-ascii?Q?MkTESxDe7s2DconxQ3XV2H2p281GVVmFnoJTMJtmIcBgqt7YpIJyBMeLGfqa?= =?us-ascii?Q?p5fH2/wjwmTjSAbrW9sfnv7yruKarfBxy8WrQl7PweWwRySiQQ3LLE1qhVa7?= =?us-ascii?Q?4hhFp7SrZe6FdHYvJd2Edpu4C/3Ql6J3h8gXC+FvEiTAIgBoTsnl0evGzQbs?= =?us-ascii?Q?dBZ52TdOV9nM+PDojyVyI4uT2XFPwsjkryZdUARs4aXtIrewKhmrcoeLTsH8?= =?us-ascii?Q?pzu4viQ87mMk0MNceLCsWqyDw4LxISeHpecpG9Dmo9YVhXclTtuhHnzvUPgu?= =?us-ascii?Q?i0sk6PUUug1HYhGJysoBVZX9xdLR8396yYMeaBm9MObgXRydqS40S9Yb3uje?= =?us-ascii?Q?vsVaKkxlJcBoSWRHb+hmfFnHJChpneBhm+9+gKpJP2ib0Z+JBzp43ZFk+r5X?= =?us-ascii?Q?v8zLh6/yeVw24/BCtVOMGXVu/7kKjaxBZwcX?= X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(1800799024)(82310400026)(376014)(7416014)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 May 2025 21:42:37.5521 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 46d0492f-2917-4c2b-fa85-08dd9979920d X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000E9D3.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB9152 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Dragos Tatulea Allow drivers that have moved over to netmem to do fragment coalescing. Signed-off-by: Dragos Tatulea Signed-off-by: Cosmin Ratiu Signed-off-by: Tariq Toukan --- include/linux/skbuff.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 5520524c93bf..e8e2860183b4 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -3887,6 +3887,18 @@ static inline bool skb_can_coalesce(struct sk_buff *= skb, int i, return false; } =20 +static inline bool skb_can_coalesce_netmem(struct sk_buff *skb, int i, + const netmem_ref netmem, int off) +{ + if (i) { + const skb_frag_t *frag =3D &skb_shinfo(skb)->frags[i - 1]; + + return netmem =3D=3D skb_frag_netmem(frag) && + off =3D=3D skb_frag_off(frag) + skb_frag_size(frag); + } + return false; +} + static inline int __skb_linearize(struct sk_buff *skb) { return __pskb_pull_tail(skb, skb->data_len) ? 0 : -ENOMEM; --=20 2.31.1