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

net: constify eth_get_byname argument ...

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

device: remove parameters when unregistering a device ...

Otherwise we loose memory on each device_unregister. The ethernet
code used to do this before calling unregister_device. This can
now be removed.

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

remove redundant NULL check on free ...

free() already checks the pointer to be non
NULL. No need to do it again.

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

treewide: Add missing includes ...

A lot of files rely on include/driver.h including include/of.h (and
this including include/errno.h. include the files explicitly so we can
eventually get rid of including of.h from driver.h

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

of: Add a context pointer to fixup functions ...

If drivers want to fixup their specific instance they need some context
to know which instance they have to fixup.

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

net, of: fixup MAC address by alias ...

If a network device has not been registered from the devicetree, we may
still find it by its alias in the devicetree. This way also platform based
network devices can obtain a valid MAC address in the devicetree.

Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: net: Use correct devicetree in eth_of_fixup ...

eth_of_fixup() is passed a devicetree, so use this one instead
of the internal devicetree. This makes sure it also works when
the tree to fixup is not the internal one.

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

Merge branch 'for-next-manual/oftree-linux-sync'

net: Set mac-address property ...

Linux normally has no idea how to retrieve MAC Addresses, but instead
expects the MAC address in the devicetree. This patch adds the MAC
address to the devicetree for Linux if we find a valid one in barebox.
This mechanism is limited of course to devices barebox has a driver for
and which are probed themselves from the devicetree.

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

net: Add of_register_ethaddr ...

We already have a possibility to register a MAC address provider
based on a ethernet device id. This adds a similar functionality
for devices probed from devicetree. Code can register itself to
be a MAC address provider for a certain devicetree node.

This helps on i.MX to let the IIM unit provide a MAC address for
the FEC.

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

net: store ethernet device parameters in device ...

Rather than storing the parameters globally and trying to keep them
in sync with the device parameters, store the parameters in the ethernet
device directly. Also, update to dev_add_param_ip().

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

Merge branch 'pu/net-link'