Hi! I am trying to write a network device driver for using multiple CAN-channels. I have a network-device-driver-module "can". I use the command "ip link add dev canX type can" to create can0 to can3.
In an example application, I can connect to each of these devices with a socket by setting "ifr_name" for ioctrl accordingly. So far so good. What I just don't get is how I can distinguish the four devices in the "can" module. E.g., the "can_transmit()" [=net_device_ops.ndo_start_xmit()] function is called with the respective net_device parameter for the calling socket. However, I need to know which CHANNEL is calling (i.e., can0, can1, ...) to forward the message to the correct mailbox. Also, if I call "ip link add can0 type can", the init function [=rtnl_link_ops.setup()] is called. The name-field of the net_device parameter, however, is NOT can0, as I would have expected. So I am missing the link between the "ip link add" command and the device-module. I guess I'm missing something really important and fundamental here... Regards, and thanks for your answer in advance, Markus -- View this message in context: http://old.nabble.com/Use-multiple-CAN-Channels-tp26724996p26724996.html Sent from the Socket-CAN Users mailing list archive at Nabble.com. _______________________________________________ Socketcan-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/socketcan-users
