函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\bpf\hashtab.c Create Date:2022-07-27 14:25:26
Last Modify:2022-05-23 09:15:29 Copyright©Brick
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函数名称：__htab_lru_map_lookup_elem

函数原型：static __always_inline void *__htab_lru_map_lookup_elem(struct bpf_map *map, void *key, const bool mark)

返回类型：void

参数：

类型参数名称
struct bpf_map *map
void *key
const boolmark
521  l等于Called from syscall or from eBPF program directly, so* arguments have to match bpf_map_lookup_elem() exactly.* The return value is adjusted by BPF instructions* in htab_map_gen_lookup().
523  如果l则
524  如果mark则bpf_lru_node_set_ref( & lru_node)
526  返回:key加und_up - round up to next specified power of 2*@x: the value to round*@y: multiple to round up to (must be a power of 2)* Rounds @x up to next multiple of @y (which must be a power of 2).* To perform arbitrary rounding up, use roundup() below.(key_size, 8)
529  返回:NULL
调用者
名称描述
htab_lru_map_lookup_elem
htab_lru_map_lookup_elem_sys