函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\bpf\offload.c Create Date:2022-07-27 14:44:00
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：bpf_offload_dev_netdev_register

函数原型：int bpf_offload_dev_netdev_register(struct bpf_offload_dev *offdev, struct net_device *netdev)

返回类型：int

参数：

类型参数名称
struct bpf_offload_dev *offdev
struct net_device *netdev
601  ondev等于分配内存并置零
602  如果非ondev则返回:负ENOMEM
605  netdev等于netdev
606  offdev等于offdev
607  初始化链表头
608  初始化链表头
610  lock for writing
611  err等于hashtable_insert_fast - insert object into hash table*@ht: hash table*@obj: pointer to hash head inside object*@params: hash table parameters* Will take the per bucket bitlock to protect against mutual mutations* on the same bucket
612  如果err则
613  netdev_warn(netdev, "failed to register for BPF offload\n")
614  转到:err_unlock_free
617  添加链表项
618  lease a write lock
619  返回:0
621  err_unlock_free :
622  lease a write lock
623  kfree(ondev)
624  返回:err