The tool wrs_port_tx_control is not needed anymore, its functionality (putting
the link down) is available by performing:
ifconfig <port> down
Such functionality was added in the commit:
[Feature: 1336] kernel/wr_nic: disable SFP when interface is down

Revert the following commits:
2b6c0bc2 userspace/tools: wrs_port_tx_control, rename network interfaces from wrX to wriX+1
ceb0c512 userspace/tools/wrs_port_tx_control: Include some defines
97d8878d userspace/tools/wrs_port_tx_control: initialise register address
35a63cd9 kernel/wb-regs: Added address offsets to endpoint-mdio.h
d11514e5 userspace/tools/wrs_port_tx_control: added unistd.h
3184c2a7 doc/wrs-user-manual: added description of wrs_port_tx_control
4da29df3 userspace/tools: dynamically check maximum port number in wr_port_tx_control
4244c894 userspace/tools: added a program to control the TX on a WRS port
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

FIXME: I know that this is not the place to add these definitions
    they should be added/fixed in the .wb files.

FIXME:
- fixed #ifndef statement, the dash makes the compiler ignore the MDIO_WB
  part, which does not allow the file to be #included together with the
  endpoint-regs.h file. This should be done in the .wb file.

FIXME:
- added register address constants. This should be done in the .wb file

Note: I have no idea how to do this, someone who knows could probably fix
    the issues raised here.

File provides information about pstats version, number of counters per word
stored in memory and number of counters per each port.

Conflicts:

	kernel/wbgen-regs/Makefile
	kernel/wbgen-regs/tru-regs.h
	kernel/wbgen-regs/tru-regs.wb

Conflicts:

	kernel/wbgen-regs/tru-regs.h
	kernel/wbgen-regs/tru-regs.wb
	userspace/wrsw_rtud/rtu_tru_drv.c
	userspace/wrsw_rtud/rtu_tru_drv.h

[this commit message by Alessandro]

This is a set of changes that bring upstream the internal status of
Tom's machine.  Splitting them up would be a massive work to little
benefit, since this is obviously right.

The broken symlink in the original commit in "tom-rt-fixes" branch is
fixed in this rebased commit.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

NOTE: the previous merge of rtu_32ports won't compile without this

Actually, this is not what I want. I would like to just use an IRQ
resource with the correct IRQ number. What I want is to hide the IRQ
domain knowledge elsewhere. For instance, in the wrs_device module
that register all our devices. But, since I have to update the kernel
with the least number of changes I will leave this for the future.
Signed-off-by: Federico Vaga <federico.vaga@cern.ch>

Signed-off-by: Federico Vaga <federico.vaga@cern.ch>

Keep low enable pin on SFP when the interface is down.
This commit makes the wrs_port_tx_control tool not needed anymore.
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Use 16 as length of wrint_name to let Alessandro sleep well.
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Set-up VLAN related registers during driver load instead of during opening
(bringing up) interfaces.
From now VLANs can be configured after loading the driver, but before bringing
up of interfaces. By this no switching is done without VLANs beeing configured.
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

When the switch is loaded, some PTP outgoing frames get discarded, so we
never get back the timestamp interrupt.  By round-robin'ing the slots,
we get back to the "busy" one, which holds an skb structure that must be
released.

Without this freeing, the skb remains in the output queue of the
socket, and after a while we get EAGAIN in send() because the buffer
is full (400 frames, more or less). And the ptp port is stuck until we
reopen the socket.

This diagnosis exposed the fact that it's not an overflow of pending
descriptors, so I change the message from

  descriptor overflow: tx timestamp pending

to

  discarding tx frame that got no timestamp

Finally, this is pr_warn, not pr_err as we now know it's expected.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Changes also in wr_pstats.
Wr_nic now calls callback function in wr_pstats to get counters
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Add posibility to setup MAC address at load time for SPEC.
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

In kernel this function returns 1/true on success!
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

- Remove only for write in #72557df
- NetworkManger (Unbuntu LTS 12.04) insists on accessing to the phy
when it is used from LM32 and flood the dmesg so we remove the warning.

NetworkManager tries to access the phy, so this WARN_ON is
pretty common if the daemon is running. Now we know who is
misbehaving, and the driver can keep silent (disclaimer: this
opinionated message is by Alessandro :)

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>