函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\bpf\reuseport_array.c Create Date:2022-07-27 14:48:15
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：bpf_fd_reuseport_array_lookup_elem

函数原型：int bpf_fd_reuseport_array_lookup_elem(struct bpf_map *map, void *key, void *value)

返回类型：int

参数：

类型参数名称
struct bpf_map *map
void *key
void *value
187  如果value_size不等于sizeof(u64)则返回:负ENOSPC
190  _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
191  sk等于reuseport_array_lookup_elem(map, key)
192  如果sk则
193  value等于sock_gen_cookie(sk)
194  err等于0
195  否则
196  err等于负ENOENT
198  _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()
200  返回:err
调用者
名称描述
map_lookup_elem