我正在尝试为SocketCAN编写一个稍微修改的CAN协议。 SocketCAN文档有一个关于这个的简短部分：
5.3 writing own CAN protocol modules To implement a new protocol in the protocol family PF_CAN a new protocol has to be defined in include/linux/can.h . The prototypes and definitions to use the SocketCAN core can be accessed by including include/linux/can/core.h . In addition to functions that register the CAN protocol and the CAN device notifier chain there are functions to subscribe CAN frames received by CAN interfaces and to send CAN frames: can_rx_register - subscribe CAN frames from a specific interface can_rx_unregister - unsubscribe CAN frames from a specific interface can_send - transmit a CAN frame (optional with local loopback) For details see the kerneldoc documentation in net/can/af_can.c or the source code of net/can/raw.c or net/can/bcm.c . （ https://www.kernel.org/doc/Documentation/networking/can.txt ）
问题是我找不到一些在这里引用的文件。 我对Linux内核不是很熟悉，所以我不知道我是否在错误的地方看。 我可以findinclude/linux/can.h和include/linux/can/目录，但是没有core.h文件。 另外，我找不到所引用的net/目录。
其他信息：
我能够发送和接收原始的CAN帧，所以我相信我已经正确地设置了SocketCAN
目录的内容（其中core.h应该是）：
beaglebone:~# ls /usr/include/linux/can/ bcm.h error.h gw.h netlink.h raw.h
我在BeagleBone Black上使用Debian（我不确定系统的embedded性是否有所作为）
如果有人能帮我指点我应该在哪里寻找这些文件，我会非常感激。
非常感谢！