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tcplinux协议
tcplinux协议
linux内核中协议栈--tcp实现的一点细节
tcp_recvmsg中的release_sock,如有接收到的包,都必须往backlog链表中添加,在__release_sock之后sk->sk_lock.owner = NULL,表明此时的sock拥有进程上下文,并且还没有人使用,那么此时进入的包可以有机会进入prequeue队列,此时的backlog队列和receive_queue已经清空,此时进入prequeue的设为数据1,然...
linux关于tcp协议ack的实现--发送端对ack的处理
前面的文章分析了接收端如何发送ack给发送端,总结一下就是立即ack,捎带ack和延迟ack,现在看一下tcp的发送端是如何处理ack的,本质上tcp所谓的有连接就是双方对于seq和ack的处理,对于seq,发送方是主动的,而接收端是被动的,但是对于ack则相反,因此参照tcp的流控以及拥塞控制加之性能因素的需要,首先要设计接收端如何发送ack,其次再来设计发送端如何处理,linux采纳了rfc...
《Linux高性能服务器编程》——第3章 TCP协议详解 3.1 TCP服务的特点
第3章 TCP协议详解 TCP协议是TCP/IP协议族中另一个重要的协议。和IP协议相比,TCP协议更靠近应用层,因此在应用程序中具有更强的可操作性。一些重要的socket选项都和TCP协议相关。 本章从如下四方面来讨论TCP协议: 不过在详细讨论TCP协议之前,我们先简单介绍一下TCP服务的特点,以及它和UDP服务的区别。 3.1 TCP服务的特点 传输层协议主要有两个:TCP协议和UDP协...
《Linux高性能服务器编程》——第1章 TCP/IP协议族 1.1 TCP/IP协议族体系结构以及主要协议
第1章 TCP/IP协议族 现在Internet(因特网)使用的主流协议族是TCP/IP协议族,它是一个分层、多协议的通信体系。本章简要讨论TCP/IP协议族各层包含的主要协议,以及它们之间是如何协作完成网络通信的。 TCP/IP协议族包含众多协议,我们无法一一讨论。本书将在后续章节详细讨论IP协议和TCP协议,因为它们对编写网络应用程序具有最直接的影响。本章则简单介绍其中几个相关协议:ICMP...
linux TCP/IP协议栈 ---pskb_copy_bits()
这段代码还是比较容易理解的.就不单独解释了。 点击(此处)折叠或打开 /* Copy some data bits from skb to kernel buffer. */ int skb_copy_bits(const struct sk_buff *skb, int offset, void *to, int len) { int i, copy; int ...
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Alibaba Cloud Linux 2
Alibaba Cloud Linux 2(原Aliyun Linux 2) 是阿里云推出的下一代 Linux 发行版,它为云上应用程序环境提供 Linux 社区的最新增强功能,在提供云上最佳用户体验的同时,也针对阿里云基础设施做了深度的优化。
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Alibaba Cloud Linux 2
Alibaba Cloud Linux 2(原Aliyun Linux 2) 是阿里云推出的下一代 Linux 发行版,它为云上应用程序环境提供 Linux 社区的最新增强功能,在提供云上最佳用户体验的同时,也针对阿里云基础设施做了深度的优化。
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