__htab_map_lookup

函数名称：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().

函数原型：static void *__htab_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

463

htab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_htab, map)

469

WARN_ON_ONCE(!_read_lock_held() - might we be in RCU read-side critical section?* If CONFIG_DEBUG_LOCK_ALLOC is selected, returns nonzero iff in an RCU* read-side critical section)

471

key_size等于key_size

473

hash等于htab_map_hash(key, key_size, hashrnd)

475

head等于select_bucket(htab, hash)

477

l等于an be called without bucket lock. it will repeat the loop in* the unlikely event when elements moved from one bucket into another* while link list is being walked

479

返回:l

**调用者**
名称	描述
htab_map_lookup_elem
__htab_lru_map_lookup_elem
htab_percpu_map_lookup_elem	Called from eBPF program
htab_lru_percpu_map_lookup_elem
bpf_percpu_hash_copy
htab_percpu_map_seq_show_elem

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告