函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\net\ip_fib.h Create Date:2022-07-27 07:38:39
Last Modify:2020-03-12 14:18:49 Copyright©Brick
首页 函数Tree
注解内核,赢得工具下载SCCTEnglish

函数名称：fib_lookup

函数原型：static inline int fib_lookup(struct net *net, const struct flowi4 *flp, struct fib_result *res, unsigned int flags)

返回类型：int

参数：

类型参数名称
struct net *net
const struct flowi4 *flp
struct fib_result *res
unsigned intflags
298  err等于负ENETUNREACH
300  _read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other
302  tb等于fib_get_table(net, RT_TABLE_MAIN)
303  如果tb则err等于fib_table_lookup(tb, flp, res, flags | FIB_LOOKUP_NOREF)
306  如果err恒等于负EAGAIN则err等于负ENETUNREACH
309  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
311  返回:err