公开(公告)号：US20250133133A1

公开(公告)日：2025-04-24

申请号：US18381991

申请日：2023-10-19

Applicant: Advanced Micro Devices, Inc.

Inventor： Raghava SIVARAMU ,  Vipin JAIN ,  Rajshekhar BIRADAR

IPC: H04L67/1097

Abstract: Embodiments herein describe creating multiple packet fragments from a large data chunk that, for example, exceeds a maximum transmission unit (MTU) supported by a network. In one embodiment, a network interface controller or card (NIC) receives a direct memory access (DMA) from a connected host to transmit an IP packet or data using remote direct memory access (RDMA) technologies. The NIC can evaluate the data chunk associated with the DMA request and determine whether it exceeds the MTU for the network. Assuming it does, the NIC determines how many fragments to divide the data chunk into, and can fragment any portion of the data at flexible packet/payload offsets. The NIC can then retrieve the data chunk from host memory fragment-by-fragment, rather than reading the data chunk all at once, generating headers for the fragments, and then transmit them as packet fragments.