📄 [转载] linux的tcp-ip协议栈阅读笔记(4) - china linux forum.htm
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<P class=post>发信人: AngelFalls (TRY IT), 信区: SysInternals<BR>标 题:
[转载] Linux的TCP/IP协议栈阅读笔记(4)<BR>发信站: 武汉白云黄鹤站 (Wed Oct 4 01:36:44
2000), 转信<BR><BR>【 以下文字转载自 Security 讨论区 】<BR>【 原文由 AngelFalls 所发表
】<BR>下面是ip_init函数，它在net/ipv4/ip_output.c里面：(下面假定定<BR>义了CONFIG_PROC_FS，CONFIG_IP_MULTICAST和CONFIG_NET_CLS_ROUTE)<BR>__initfunc(void
ip_init(void))<BR>{<BR>dev_add_pack(&ip_packet_type);<BR>ip_rt_init();<BR>proc_net_register(&proc_net_igmp);<BR>}<BR><BR>前面的dev_add_pack是说过的，这里就不再说了，而且proc_net_register<BR>也是前面提过的，这里都不说了，先来看看ip_rt_init函数把，它在net/<BR>ipv4/route.c里面，函数是这样的：<BR>__initfunc(void
ip_rt_init(void))<BR>{<BR>struct proc_dir_entry
*ent;<BR>devinet_init();<BR>ip_fib_init();<BR>rt_periodic_timer.function
= rt_check_expire;<BR>/* All the timers, started at system startup
tend<BR>to synchronize. Perturb it a
bit.<BR>*/<BR>rt_periodic_timer.expires = jiffies +
net_random()%<BR>ip_rt_gc_interval +
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