函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\bpf\arraymap.c Create Date:2022-07-27 14:27:12
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Called from syscall or from eBPF program

函数原型：static void *array_map_lookup_elem(struct bpf_map *map, void *key)

返回类型：void

参数：

类型参数名称
struct bpf_map *map
void *key
171  array等于container_of - cast a member of a structure out to the containing structure*@ptr: the pointer to the member.*@type: the type of the container struct this is embedded in.*@member: the name of the member within the struct.(map, structbpf_array, map)
172  index等于key
174  如果此条件成立可能性小(为编译器优化)(index >= max_entries)则返回:NULL
177  返回:value加elem_size乘index按位与index_mask的值
调用者
名称描述
array_map_seq_show_elem
bpf_fd_array_map_lookup_elemly called from syscall
prog_array_map_seq_show_elem
array_of_map_lookup_elem