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>

net: Pass eth_device to net_receive ...

So that barebox has the information which interface a packet
came from.

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

net: ifup: Set current ethernet device when doing ifup ...

When doing an ifup set the current interface to the one just
brought up so that it is actually used.

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

commands: move CMD_IFUP to commands/Kconfig ...

* this places the command into the "Network commands"
  section of Kconfig
* while at it, improve Kconfig documention

Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: NET_DHCP -> CMD_DHCP ...

* this compile option actually turns on a command, so name it
  accordingly
* also move the Kconfig definition into commands/Kconfig, thus
  placing getopt into the "Network commands" section
* while at it, improve Kconfig documention

Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: NET_PING -> CMD_PING ...

* this compile option actually turns on a command, so name it
  accordingly
* also move the Kconfig definition into commands/Kconfig, thus
  placing getopt into the "Network commands" section
* while at it, improve Kconfig documention

Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: introduce CMD_HOST ...

... because NET_RESOLV can be used alone to turn on the functionality
of resolv().

Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: harmonize in-barebox documentation ...

This patch does probably too much, but it's hard (and very
cumbersome/time consuming) to break it out. What is does is this:

* each command has one short description, e.g. "list MUX configuration"
* made sure the short descriptions start lowercase
* each command has one usage. That string contains just the
  options, e.g. "[-npn]". It's not part of the long help text.
* that is, it doesn't say "[OPTIONS]" anymore, every usable option
  is listed by character in this (short) option string (the long
  description is in the long help text, as before)
* help texts have been reworked, to make them
  - sometimes smaller
  - sometimes describe the options better
  - more often present themselves in a nicer format
* all long help texts are now created with BUSYBOX_CMD_HELP_
  macros, no more 'static const __maybe_unused char cmd_foobar_help[]'
* made sure the long help texts starts uppercase
* because cmdtp->name and cmdtp->opts together provide the new usage,
  all "Usage: foobar" texts have been removed from the long help texts
* BUSYBOX_CMD_HELP_TEXT() provides the trailing newline by itself, this
  is nicer in the source code
* BUSYBOX_CMD_HELP_OPT() provides the trailing newline by itself
* made sure no line gets longer than 77 characters
* delibertely renamed cmdtp->usage, so that we can get compile-time
  errors (e.g. in out-of-tree modules that use register_command()
* the 'help' command can now always emit the usage, even without
  compiled long help texts
* 'help -v' gives a list of commands with their short description, this
  is similar like the old "help" command before my patchset
* 'help -a' gives out help of all commands

Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: group 'help' output ...

The old output of "help" was just producing a long list, that usually
scrolled of the screen (even on a X11 terminal). This list is more
compact, and also sorted by groups.

The old output format (plus grouping) is now available with 'help -v'.

Example:

   Information commands:
     ?, devinfo, help, iomem, meminfo, version
   Boot commands:
     boot, bootm, go, loadb, loads, loadx, loady, saves, uimage
   ...

Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net/ifup.c: avoid setting the MAC twice ...

The command always sets the MAC address of the interface in the code path.
For the static network configuration case it sets it again, due to the
environment variable keyword ("ethaddr") is listed again in the table.
Remove this keyword from the table, because the MAC is already set.

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

net/ifup.c: don't fail silently ...

Since commit a162dfe the ifup command is
implemented in C and runs up to two external scripts.
If one of these scripts return with an error code, the command terminates
silently. This can confuse a user because there is no hint about the reason
why it fails. Add error messages to avoid this case.

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

Merge branch 'for-next/misc'

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>

netconsole: bail out when no connection is opened ...

When no connection is opened we should not call into
the networking stack. Otherwise it can happen that we
delay further execution until the network stack detected
a link (or timed out bringing the link up).

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

ifup: set serverip to provided value when doing dhcp ...

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: Add ifup support ...

The defaultenv-2 has ifup support as a shell script. This patch
replaces it with a command which is more robust, can be called
from C and now can also bring up all configured interfaces.

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

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>

net: Fix error return value for string_to_ethaddr ...

Return a proper error code instead of -1 which would be -EPERM.

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

barebox: remove double semicolons ...

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
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>

Merge branch 'for-next/console'

dhcp: replace dhcp_getenv_int with getenv_uint ...

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

console: drop f_caps and check the function pointer getc/putc instead ...

None of the driver make the difference between STDOUT and STDERR.
So we just need to check if putc or getc are filled in the console_device

save 32 bytes on versatilepb

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/powerpc'