工作需要,将这个 Mellanox 的编程用户手册(RDMA_Aware_Programming_user_manual.pdf)翻译成了中文，便于大家 学习参考。其中第一章和第二章参考了网络上的一些已有翻译，并做了部分纠 错。其他借助了 google 翻译。发布时候我会同时上传英文原版和翻译版，以便 纠错。

详细分析介绍RDMA RoCEv2标准协议，报文格式，消息内容。原创总结InfiniBand Architecture Secification Volume1 Release 1.2.1 标准的关键点. 力求读者5分钟掌握RDMA标准。同时附有标准原文档，包括RoCEv2 标准。

RoCEv2和rdma标准文档 This document is an annex to Volume 1 release 1.2.1 of the InfiniBand Architecture, herein referred to as the base specification. This annex is Optional Normative, meaning that implementation of the feature described by this annex is Optional, but if present, the implementation must comply with the compliance statements contained within this annex. This specification follows the spirit of the RoCE Annex (Annex A16 to the base specification) in defining a new InfiniBand protocol variant that uses an IP network layer (with an IP header instead of InfiniBand‘s GRH) thus allowing IP routing of its packets.