函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\net\route.h Create Date:2022-07-27 07:39:00
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：ip_route_input

函数原型：static inline int ip_route_input(struct sk_buff *skb, __be32 dst, __be32 src, u8 tos, struct net_device *devin)

返回类型：int

参数：

类型参数名称
struct sk_buff *skb
__be32dst
__be32src
u8tos
struct net_device *devin
197  _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
198  err等于ip_route_input_noref(skb, dst, src, tos, devin)
199  如果非err则
200  确保DST是引用计数
201  如果非skb_dst - returns skb dst_entry*@skb: buffer* Returns skb dst_entry, regardless of reference taken or not.则err等于负EINVAL
204  _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()
206  返回:err