函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\net\ip6_fib.h Create Date:2022-07-27 20:42:43
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：rt6_get_prefsrc

函数原型：static inline void rt6_get_prefsrc(const struct rt6_info *rt, struct in6_addr *addr)

返回类型：void

参数：

类型参数名称
const struct rt6_info *rt
struct in6_addr *addr
462  _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
464  from等于cu_dereference() - fetch RCU-protected pointer for dereferencing*@p: The pointer to read, prior to dereferencing* This is a simple wrapper around rcu_dereference_check().(from)
465  如果from则
466  addr等于addr
467  否则
468  struct in6_addr in6_zero = {}
470  addr等于in6_zero
473  _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()