将数据从struct net_device_stats复制到用户空间
[英]Copying data from struct net_device_stats to user space
问题描述
I would like to have a little help with this problem, I need to copy data from the struct net_device_stats of eth0 to userspace to show it to the user.I know I should be doing this with a system call and some people recommended me to make a function that receives a pointer to net_device_stats, and then use the function struct net_device_stats *(*get_stats)(struct net_device *dev). 
我想对这个问题有所帮助，我需要将数据从eth0的net_device_stats结构复制到用户空间以显示给用户。我知道我应该通过系统调用来完成此操作，有人建议我这样做一个函数，该函数接收指向net_device_stats的指针，然后使用函数struct net_device_stats *（* get_stats）（struct net_device * dev）。 I don't have much idea of this so I would like to hear tips and recommendations from you about how to approach this problem and what should I have in mind 我对此没有太多想法，所以我想听听您的提示和建议，以了解如何解决此问题以及我应注意的事项
Sorry for my vague English and thank you, if I shouldn't be asking this here please tell me. 对不起，我英语含糊，谢谢。如果我不应该在这里问这个问题，请告诉我。
1 个解决方案
解决方案1
0 2017-05-15 15:38:43
If I understand you correctly, you should use sysfs for that. 如果我理解正确，则应使用sysfs。 For example, see /sys/class/net/eth0/statistics 例如，请参见/ sys / class / net / eth0 / statistics
There are many examples in Linux under drivers/net directory. 在Linux中，drivers / net目录下有很多示例。
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