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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BN8NAM11FT012.mail.protection.outlook.com (10.13.177.55) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6043.17 via Frontend Transport; Thu, 26 Jan 2023 13:18:36 +0000 Received: from telcodpdk.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Thu, 26 Jan 2023 07:18:33 -0600 From: Ferruh Yigit To: Thomas Monjalon , Olivier Matz CC: David Marchand , Subject: [PATCH v4 2/8] net: add smaller fields for VXLAN Date: Thu, 26 Jan 2023 13:17:53 +0000 Message-ID: <20230126131759.3887632-3-ferruh.yigit@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230126131759.3887632-1-ferruh.yigit@amd.com> References: <20221025214410.715864-1-thomas@monjalon.net> <20230126131759.3887632-1-ferruh.yigit@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT012:EE_|PH8PR12MB8607:EE_ X-MS-Office365-Filtering-Correlation-Id: b4c2caad-3ebe-4bb9-bc9f-08daff9fd550 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Jan 2023 13:18:36.9755 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b4c2caad-3ebe-4bb9-bc9f-08daff9fd550 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=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT012.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB8607 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org From: Thomas Monjalon The VXLAN and VXLAN-GPE headers were including reserved fields with other fields in big uint32_t struct members. Some more precise definitions are added as union of the old ones. The new struct members are smaller in size and in names. Signed-off-by: Thomas Monjalon --- lib/net/rte_vxlan.h | 35 +++++++++++++++++++++++++++++------ 1 file changed, 29 insertions(+), 6 deletions(-) diff --git a/lib/net/rte_vxlan.h b/lib/net/rte_vxlan.h index 929fa7a1dd01..997fc784fc84 100644 --- a/lib/net/rte_vxlan.h +++ b/lib/net/rte_vxlan.h @@ -30,9 +30,20 @@ extern "C" { * Contains the 8-bit flag, 24-bit VXLAN Network Identifier and * Reserved fields (24 bits and 8 bits) */ +__extension__ /* no named member in struct */ struct rte_vxlan_hdr { - rte_be32_t vx_flags; /**< flag (8) + Reserved (24). */ - rte_be32_t vx_vni; /**< VNI (24) + Reserved (8). */ + union { + struct { + rte_be32_t vx_flags; /**< flags (8) + Reserved (24). */ + rte_be32_t vx_vni; /**< VNI (24) + Reserved (8). */ + }; + struct { + uint8_t flags; /**< Should be 8 (I flag). */ + uint8_t rsvd0[3]; /**< Reserved. */ + uint8_t vni[3]; /**< VXLAN identifier. */ + uint8_t rsvd1; /**< Reserved. */ + }; + }; } __rte_packed; /** VXLAN tunnel header length. */ @@ -45,11 +56,23 @@ struct rte_vxlan_hdr { * Contains the 8-bit flag, 8-bit next-protocol, 24-bit VXLAN Network * Identifier and Reserved fields (16 bits and 8 bits). */ +__extension__ /* no named member in struct */ struct rte_vxlan_gpe_hdr { - uint8_t vx_flags; /**< flag (8). */ - uint8_t reserved[2]; /**< Reserved (16). */ - uint8_t proto; /**< next-protocol (8). */ - rte_be32_t vx_vni; /**< VNI (24) + Reserved (8). */ + union { + struct { + uint8_t vx_flags; /**< flag (8). */ + uint8_t reserved[2]; /**< Reserved (16). */ + uint8_t protocol; /**< next-protocol (8). */ + rte_be32_t vx_vni; /**< VNI (24) + Reserved (8). */ + }; + struct { + uint8_t flags; /**< Flags. */ + uint8_t rsvd0[2]; /**< Reserved. */ + uint8_t proto; /**< Next protocol. */ + uint8_t vni[3]; /**< VXLAN identifier. */ + uint8_t rsvd1; /**< Reserved. */ + }; + }; } __rte_packed; /** VXLAN-GPE tunnel header length. */