net: add a context to the packet handler ...

This is not yet used, but with this the different network
commands can get rid of their global data.

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

ping: make locally used functions static ...

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

ping: resolv hostnames ...

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

implement ping using new network stack ...

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

net: remove need for eth_halt/eth_open ...

We used to eth_open/eth_halt the network devices during NetLoopInit
which is called whenever the user enters a network command.
Change this behaviour so that the current network device gets opened
when making it the current one.
With this change it's always possible to send packages and we are able
to implement a new network stack in the next step.

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

replace ET_DEBUG with pr_debug ...

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

remove typedef cmd_tbl_t and replace it with struct command ...

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

rename U-Boot-v2 project to barebox ...

This has been done with the following script:

find -path ./.git -prune -o -type f -print0 | xargs -0 -r sed -i \
	-e 's/u2boot/barebox/g' \
	-e 's/U2Boot/barebox/g' \
	-e 's/U-boot V2/barebox/g' \
	-e 's/u-boot v2/barebox/g' \
	-e 's/U-Boot V2/barebox/g' \
	-e 's/U-Boot-v2/barebox/g' \
	-e 's/U_BOOT/BAREBOX/g' \
	-e 's/UBOOT/BAREBOX/g' \
	-e 's/uboot/barebox/g' \
	-e 's/u-boot/barebox/g' \
	-e 's/u_boot/barebox/g' \
	-e 's/U-Boot/barebox/g' \
	-e 's/U-boot/barebox/g' \
	-e 's/U-BOOT/barebox/g'

find -path ./.git -prune -o \( -name "*u-boot*" -o -name "*uboot*" -o -name "*u_boot*" \) -print0 | \
	xargs -0 -r rename 's/u[-_]?boot/barebox/'

It needs some manual fixup following in the next patch

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

commands: remove maxargs ...

No need to check for maximum argument counts. The commands are
safe to be called with more arguments, so lets safe some bytes.

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

commands: return COMMAND_ERROR_USAGE ...

instead of calling u_boot_cmd_usage in each command to safe
space.

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

ping: shorten usage info ...

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

ping: do not return -1 in command ...

Also, print usage if not enough arguments given.

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

only the ping code is interested in the ping ip ...

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

ping.c: refactor ...

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

net: remove switch/case in NetLoop() ...

Instead of having a big switch/case for every protocol, do
the right things in the individual functions before callong
NetLoop().

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

net: split NetLoop in NetLoop and NetLoopInit ...

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

net: remove NetStartAgain() ...

Do not let the network stack restart itself

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

Fix string_to_ip ...

Use a pointer to an ip address instead of the return value in string_to_ip
and use the return value for error indication only. 0.0.0.0 can be a valid
ip address

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

ping.c: remove volatile from variables

remove unneeded colatile from variable

remove u-boot command paramter flag

svn_rev_556 ...

unify help string style

svn_rev_462 ...

- Add help texts for many commands.
- Let the linker sort the command table.
- Add support for multiple argmuments in several commands
  (mkdir, rmdir, rm, cat)

svn_rev_420 ...

- do more POSIX:
  - use DIR instead of struct dirent
  - use (struct dirent)->d_name instead of (struct dirent)->name
- switch to a new layout for U_BOOT_CMD:
  - use C99 initializers to be able to add more fields to the
    command struct
  - add aliases for commands (needed mainly for help -> ? and test -> [
  - This is not done for all commands yet, but the compiler will tell you ;)

svn_rev_101