treewide: remove references to CREDITS ...

The CREDITS file was removed from barebox in 2015 by commit 6570288f2d97
("Remove the CREDITS file"). Remove references to it from several files.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: Open ethernet devices explicitly ...

Open ethernet devices explicitly rather than implicitly when sending
packets. This allows us to not only enable, but in the next step to
also disable ethernet devices.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: Allow hostnames for global.net.server ...

Additional to IPv4 addresses add support for global.net.server being a
hostname.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/net-switch-mv88e6xxx'

net: only use ethaddrs registered with device node on that device ...

If an ethaddr is registered with a device node the ethid is set
to 0 via the struct initialization. Now if a device without a node
(for eaxample a USB network adapter) with ethid 0 looks up the
ethaddr it will wrongly get that address assigned, as the ethid
matches.

Avoid this by setting the ethid to something that no device will
ever use when the addr is registered via a device node.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers: Introduce dev_set_name() ...

Introduce dev_set_name() in order to hide implementation details of
setting device's name so it'd be easier to change it.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: eth: Make use of ETH_ALEN ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: Add linuxdevname property ...

When you have a static network environment but more than one network
device on your machine it is necessary to provide the <device> parameter
to the ip parameter at kernel cmd line.

The device name assigned by Linux cannot in general be predicted as it
depends on driver bind order.

This patch introduces a new property linux.devname to eth devices.
The value is added to bootargs per interface and can be changed in
env/network/INTF

Based on patch by Gavin Schenk <g.schenk@eckelmann.de>.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: Provide new way to configure network devices ...

This provides a new way to configure network interfaces based
on nvvars. A network interface can now be configured with variables
in the nv.dev.<ethname>.* namespace. There is a new network device
parameter "mode" which specifies the mode used to obtain IP settings.
The mode can be "dhcp", "static" or "disabled":

nv.dev.eth0.mode=dhcp
(ipaddr, netmask are ignored in this setting)

nv.dev.eth0.mode=static
nv.dev.eth0.ipaddr=192.168.0.17
nv.dev.eth0.netmask=255.255.0.0

nv.dev.eth0.mode=disabled

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: remove "current" network device ...

Now that we can do routing we no longer need a "current"
network device. Remove it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: Use a single gateway ...

There is not much point in having a network device specific
gateway. If barebox really is part of such a complicated network
in which it needs multiple gateways, then we probably need a
real routing table. Until this happens, a single gateway should
be enough.

This introduces global.net.gateway which holds the gateway ip. The
previously used device specific <ethx>.gateway variables still exist,
but are only aliases for the single gateway.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: introduce global.net.server ...

The server to use is independent of the network device, there is
not much point to make the server specific to a network device.

This introduces global.net.server as the serverip which is
used as standard NFS/tftp server. The previously used eth
device specific parameters still exist, but are only aliases
for the global single variable.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: add linux.bootarg parameter from ifup call ...

This sets a `ip=dhcp` or
`ip=<clientip>:<serverip>:<gatewayip>:<netmaskip>::<iface>:` bootarg for
the network device upon execution of 'ifup'. This is the only point
where we can distinguish between a static ip and a dhcp-based network
setup and thus set a valid bootarg options as it will be required for
nfs boot, for example.

Signed-off-by: Enrico Jorns <ejo@pengutronix.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: eth: add name to struct eth_device ...

Using dev_name often is not a good idea since it's a statically
allocated string which gets overwritten by later calls to dev_name.
Add a devname string to struct eth_device to have the name available
for later use.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: introduce for_each_netdev iterator ...

for_each_netdev is nicer to read. Also export the list of network
devices since it will be used by code outside of net/eth.c in later
patches.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: eth: open correct edev in eth_check_open ...

eth_check_open gets the network device to check as parameter, so
use it rather than using eth_current. Currently both are the same,
so this currently does not fix anything.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: eth: Remove ethaddr_param ...

commit d00db554 introduce ethaddr_param. But it is not initialized, so
devinfo fails to show the mac. Remove it and use edev->ethaddr.

Signed-off-by: Jan Remmet <j.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: eth: Fixup OF tree with registered MAC addresses too ...

The eth code registers an OF tree fixup that looks for any nodes in
the Linux oftree that match eth devices loaded in barebox and sets the
mac-address property in those nodes.  The purpose is to pass MAC
addresses to the Linux kernel for drivers that expect the MAC address
to be in the device tree.

If barebox does not have a driver for the network device, either
because it has been disabled or because one does not exist, then the
OF tree will not be fixed up to include a MAC address.

The eth code also has a list of MAC addresses which board code has
registered, usually done when it reads the address from an EEPROM or
on-chip memory.  If an eth device is created later in the boot, it
will look here for an address.

The registered MAC address list is not used for the OF tree fix up,
and this patch changes that.  This way barebox can place a MAC address
in the device-tree without needing a driver for the network device.

Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: eth: Refactor OF tree fixup of one node into new function ...

Code that fixes up one node with a new MAC address is refactored into
a new function that eth_of_fixup() calls in a loop.

Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/net'

net: make eth_register_ethaddr work on registered network devices ...

When eth_register_ethaddr is called after the device has been registered
it should work aswell.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: eth_send: Allow to use multiple network interfaces at once ...

The commit

commit be0404c
Author: Sascha Hauer <s.hauer@pengutronix.de>
Date:   Wed May 14 16:08:04 2014 +0200

    net: Allow to use multiple network interfaces at once

changes the eth_send() function:

-       return eth_current->send(eth_current, packet, length);
+       return edev->send(eth_current, packet, length);

But we have to change the both eth_current occurrences to edev here!

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: eth: Do not rely on CONFIG_PARAMETER to be enabled ...

register_preset_mac_address only works when CONFIG_PARAMETER
is enabled because otherwise dev_set_param is a no-op. Add a
function to set the MAC address explicitly without the need
of CONFIG_PARAMETER and use it where appropriate.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

eth: halt active ethernet device on unregister ...

When an active ethernet device is unregistered it should
be halted to quiesce the device.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: Call edev->recv with correct eth_device ...

edev->recv has to be called with edev as argument, not eth_current.
This fixes networking when multiple network devices are used and the
current one is switched during runtime.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: take eth id from devicetree alias ...

If the devicetree has an alias for the ethernet device, then use
it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: Allow to use multiple network interfaces at once ...

In barebox network packets always go out at the current ethernet
device and are expected to be received from the current interface.
This has some side effects. When for example an NFS is mounted when
one interface is active and the interface is changed afterwards the
NFS packets leave the new interface, but the NFS server won't be
reachable there.

Instead of changing the whole network traffic to the current ethernet
interface we now initialize a network connection with the current
network interface, but then the connection will continue to use that
interface even when the current interface is changed.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

param: Add dev_add_param_mac ...

This adds a convenience function to register a MAC address device
parameter. The only current user is converted to use it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/nfs' ...

Conflicts:
	defaultenv/defaultenv-2-base/bin/ifup

Merge branch 'for-next/mtd' ...

Conflicts:
	drivers/mtd/core.c
	net/eth.c