函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\bpf\xskmap.c Create Date:2022-07-27 14:43:03
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：xsk_map_delete_elem

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

返回类型：int

参数：

类型参数名称
struct bpf_map *map
void *key
239  m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, structxsk_map, map)
241  k等于key
243  如果k大于等于max_entries则返回:负EINVAL
246  spin_lock_bh( & Synchronize map updates )
247  map_entry等于xsk_map[k]
248  old_xs等于xchg(map_entry, NULL)
249  如果old_xs则xsk_map_sock_delete(old_xs, map_entry)
251  spin_unlock_bh( & Synchronize map updates )
253  返回:0