The field "struct net_device::dev_port" (exported under sysfs) is used to
differentiate between the interfaces of a device. This series of patches
allows the user to value this field from a value read from the flash memory
of the CAN-USB interfaces of PEAK-System GmbH by implementing the ethtool
interface which offers read/write access to the eeprom of the device:
$ ethtool -E can0 value 3
$ ethtool -e can0
Offset Values
------ ------
0x0000: 03 00 00 00
$ cat /sys/class/net/can0/dev_port
3
Uniquely identifying the CAN interface of a USB device allows it to be
connected to any USB port on the host machine, in any order.
Signed-off-by: Stephane Grosjean <s.grosjean@xxxxxxxxxxxxxxx>
Stephane Grosjean (8):
can: peak_usb: rename a callback to a more explicit name
can: peak_usb: add callback to read user value of CANFD devices
can: peak_usb: correction of a wrong field name
can: peak_usb: switch function parameter to native format
can: peak_usb: allow flashing of user defined value
can: peak_usb: add ethtool interface to user defined flashed device
number
can: peak_usb: replace device_number priv field with netdev dev_port
field
can: peak_usb: replace unregister_netdev() with unregister_candev()
drivers/net/can/usb/peak_usb/pcan_usb.c | 39 +++++++++--
drivers/net/can/usb/peak_usb/pcan_usb_core.c | 74 ++++++++++++++++++--
drivers/net/can/usb/peak_usb/pcan_usb_core.h | 10 ++-
drivers/net/can/usb/peak_usb/pcan_usb_fd.c | 56 ++++++++++++++-
drivers/net/can/usb/peak_usb/pcan_usb_pro.c | 27 +++++--
drivers/net/can/usb/peak_usb/pcan_usb_pro.h | 3 +-
6 files changed, 192 insertions(+), 17 deletions(-)
--
2.25.1
