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Miller" , "Eric Dumazet" , Jakub Kicinski , Paolo Abeni CC: Michal Simek , Sean Anderson , Daniel Borkmann , "Ariane Keller" , , , Subject: [PATCH net V2 1/2] net: xilinx: axienet: Correct BD length masks to match AXIDMA IP spec Date: Fri, 27 Mar 2026 13:02:37 +0530 Message-ID: <20260327073238.134948-2-suraj.gupta2@amd.com> X-Mailer: git-send-email 2.49.1 In-Reply-To: <20260327073238.134948-1-suraj.gupta2@amd.com> References: <20260327073238.134948-1-suraj.gupta2@amd.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Received-SPF: None (SATLEXMB03.amd.com: suraj.gupta2@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA2PEPF00003F67:EE_|DM4PR12MB7696:EE_ X-MS-Office365-Filtering-Correlation-Id: 05b377bf-1fd0-4a4e-e8e5-08de8bd30e0e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|36860700016|7416014|376014|22082099003|56012099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb08.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(82310400026)(1800799024)(36860700016)(7416014)(376014)(22082099003)(56012099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: yo5w/8UGI5N9JL3kNtFyxCDjL9CkFGBeFQSHGAFV5B57iheKWmO+ZZl7G0AtFObmpw7eOHSx4fn7Efb4n0skPoeVee5gbk29cXW08j1898h72xT5Lh/L8LdpfD8lkKR8ikmUFFmjIppEmNAKt1vesDeUzVDy5Xu7HADVxEm3PuZP+o4coV5VgVwxwDx4zrm0Ayfr1Z2DRX0JaCjN7brswEXOU0STIVdQPmX9p6qRbDAIK4Sunq60iVYSx4RhI+EMAqqap5otJyJGhBReCOPW/BpiXXMFquyl3FUBEF8EKorVKzskxk4cdnpZx9GLWbl6gZKYWLUB2fg6/jwIFEwwysLq6JdwIG964K9LDdbLN1gzbe54Yn7qZuM1bvtUb0VgxwqgpOeP8CSBX7RfDi7kaNgjuiiDjRfdLirHrUBCfGAVJ84bXUjyhNyufLVvXcRP X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Mar 2026 07:32:52.2789 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 05b377bf-1fd0-4a4e-e8e5-08de8bd30e0e X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SA2PEPF00003F67.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB7696 The XAXIDMA_BD_CTRL_LENGTH_MASK and XAXIDMA_BD_STS_ACTUAL_LEN_MASK macros were defined as 0x007FFFFF (23 bits), but the AXI DMA IP product guide (PG021) specifies the buffer length field as bits 25:0 (26 bits). Update both masks to match the IP documentation. In practice this had no functional impact, since Ethernet frames are far smaller than 2^23 bytes and the extra bits were always zero, but the masks should still reflect the hardware specification. Fixes: 8a3b7a252dca ("drivers/net/ethernet/xilinx: added Xilinx AXI Ethernet driver") Signed-off-by: Suraj Gupta --- drivers/net/ethernet/xilinx/xilinx_axienet.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet.h b/drivers/net/ethernet/xilinx/xilinx_axienet.h index 5ff742103beb..fcd3aaef27fc 100644 --- a/drivers/net/ethernet/xilinx/xilinx_axienet.h +++ b/drivers/net/ethernet/xilinx/xilinx_axienet.h @@ -105,7 +105,7 @@ #define XAXIDMA_BD_HAS_DRE_MASK 0xF00 /* Whether has DRE mask */ #define XAXIDMA_BD_WORDLEN_MASK 0xFF /* Whether has DRE mask */ -#define XAXIDMA_BD_CTRL_LENGTH_MASK 0x007FFFFF /* Requested len */ +#define XAXIDMA_BD_CTRL_LENGTH_MASK GENMASK(25, 0) /* Requested len */ #define XAXIDMA_BD_CTRL_TXSOF_MASK 0x08000000 /* First tx packet */ #define XAXIDMA_BD_CTRL_TXEOF_MASK 0x04000000 /* Last tx packet */ #define XAXIDMA_BD_CTRL_ALL_MASK 0x0C000000 /* All control bits */ @@ -130,7 +130,7 @@ #define XAXIDMA_BD_CTRL_TXEOF_MASK 0x04000000 /* Last tx packet */ #define XAXIDMA_BD_CTRL_ALL_MASK 0x0C000000 /* All control bits */ -#define XAXIDMA_BD_STS_ACTUAL_LEN_MASK 0x007FFFFF /* Actual len */ +#define XAXIDMA_BD_STS_ACTUAL_LEN_MASK GENMASK(25, 0) /* Actual len */ #define XAXIDMA_BD_STS_COMPLETE_MASK 0x80000000 /* Completed */ #define XAXIDMA_BD_STS_DEC_ERR_MASK 0x40000000 /* Decode error */ #define XAXIDMA_BD_STS_SLV_ERR_MASK 0x20000000 /* Slave error */ -- 2.49.1