Duplicate TLPs are detected and discarded in the Data Link Layer, whereas PTM messages are identified in the Transaction Layer. In some implementations it may be difficult or excessively complicated to distinguish a duplicate PTM TLP from other duplicate TLPs. Because Upstream Ports are permitted to invalidate their internal PTM context for implementation-specific criteria, a PTM Requester is allowed to invalidate its internal PTM context upon the reception of any duplicate TLP in addition to any duplicate PTM TLP. Similarly, if ePTM is supported, then a PTM Responder is allowed to invalidate its historical timestamps (t2 - t3) upon the reception of any duplicate TLP. 翻译
时间: 2024-04-28 14:27:02 浏览: 113
[elearnica.ir]-A_Novel_Design_of_Ternary_Full_Add_The Duplicate
在数据链路层中,重复的 TLP(Transaction Layer Packets)会被检测并且丢弃,而在事务层中,PTM(Packet Transmission Layer)消息会被识别。在某些实现中,很难或者过于复杂来区分一个重复的 PTM TLP 和其他重复的 TLP。因为上游端口被允许根据特定的实现标准来使其内部的 PTM 上下文失效,所以一个 PTM 请求者可以在接收到任何重复的 TLP 以及重复的 PTM TLP 时使其内部的 PTM 上下文失效。同样,如果支持 ePTM,则一个 PTM 响应者可以在接收到任何重复的 TLP 时使其历史时间戳(t2 - t3)失效。
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