This adds a function for generating a valid random MAC address (unset MC
bit / set locally administered bit).
It is necessary for devices which do not have a MAC address programmed
by the manufacturer.
Signed-off-by: David Bauer <mail@david-bauer.net>
Some devices (e.g. Arduino Yun) need bitwise operations during MAC address
setup. This commit adds generalized versions of macaddr_setbit_la(), which
are helpful when manipulating a single bit in a MAC address.
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
The file /lib/functions/system.sh depends on find_mtd_index() and
find_mtd_part() located in /lib/function.sh, so let's source that
file.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
If a label MAC address is provided for device, system
will rename the hostname with OpenWrt_{eui mac address}.
This helps to distinguish between different devices.
Since it's no good idea to nest json_* functions, this code does
not use get_mac_label directly, but only get_mac_label_dt as
external resource.
Signed-off-by: Rosy Song <rosysong@rosinson.com>
[merged with commit introducing macaddr_geteui, rebased on updated
label MAC address storage, extended commit message]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
If set, label MAC address is available from one of two sources,
device tree or board.json. So far, the function get_mac_label
was meant for retrieving the address, while an option in uci
system config was specified only for case 2 (board.json).
The uci config option has several drawbacks:
- it is only used for a fraction of devices (those not in DT)
- label MAC address is a device property, while config implies
user interaction
- label_macaddr option will only be set if /etc/config/system
does not exist (i.e. only for new installations)
Thus, this patch changes the behavior of get_mac_label:
Instead of writing the value in board.json to uci system config
and reading from this location afterwards, get_mac_label now
extracts data from board.json directly. The uci config option
won't be used anymore.
In addition, two utility functions for extraction only from DT
or from board.json are introduced.
Since this is only changing the access to the label MAC address, it
won't interfere with the addresses stored in the code base so far.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
For many devices, MAC addresses cannot be retrieved via the
device tree alias.
To still provide the label MAC address for those, this implements
a second mechanism that will put the address into uci config.
Note that this stores the actual MAC address, whereas in DTS
we reference the bearing device.
This is based on the work of Rosy Song <rosysong@rosinson.com>
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
To refer to the MAC address on a device's label, one can
specify the alias label-mac-device in the DTS which should
point to the bearer of the corresponding MAC address.
With the function get_mac_label, the user can retrieve then
retrieve this address and use it as a value that uniquely
identifies his device.
This is severely helpful for several downstream functionalities,
e.g. define MAC addresses of custom netifs or change the SSID to
be easily recognizable.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The actual retrieval of the MAC address in mtd_get_mac_binary_ubi()
is the same as in get_mac_binary(). Thus, use the latter function
in the former to reduce duplicate code.
This will also allow to benefit from the enhanced path check there
and bring mtd_get_mac_binary_ubi() more in line with the similar
mtd_get_mac_binary().
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The mtd_get_mac_text helper method did not support hexadecimal offset
values, resulting them to break after 75bfc393ba ("treewide:
convert MAC address location offsets to hexadecimal")
This commit fixes this by evaluating the hexadecimal input,
converting them to decimal.
Signed-off-by: David Bauer <mail@david-bauer.net>
Logic was inverted when changing from string check to file check.
Fix it.
Fixes: 8592602d0a ("base-files: Really check path in get_mac_binary")
Reported-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Currently, path argument is only checked for being not empty.
This changes behavior to actually check whether path exists.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Add a function to get a mac stored as text from flash. The octets of
the mac address need to be separated by any separator supported by
macaddr_canonicalize().
Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
Signed-off-by: Mathias Kresin <dev@kresin.me>
Add the opening bracket right after the function name, to do it the
same way for all functions in this file.
Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
Signed-off-by: Mathias Kresin <dev@kresin.me>
Add a fucntion to get the a binary mac address from file. Use the new
function for mtd_get_mac_binary() to limit duplicate code.
Signed-off-by: Mathias Kresin <dev@kresin.me>
The MR18 stores the ath9k eeprom values on the NAND.
This patch makes it possible to retrieve the images
from there.
Signed-off-by: Chris R Blake <chrisrblake93@gmail.com>
SVN-Revision: 47948
