Add Byte Queue Limits (BQL) support to via-rhine driver.

[edumazet] tweaked patch and changed TX_RING_SIZE from 16 to 64
Signed-off-by: Tino Reichardt <milky-kernel@mcmilk.de>
Tested-by: Jamie Gloudon <jamie.gloudon@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The IP6_TNL_TRACE macro is no longer used anywhere in the code so remove definition.
Signed-off-by: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

Mahesh Bandewar says:

====================
(Shortened) Bonding patch series

I'm shortening the earlier patch series to just two patches at this moment.
Andy is going to integrate remaining 3 patches with his netlink changes
and post the completed patches.

These two patches are the same one from the previous patch series with
some styling changes (Dave Miller's suggestions) for the churn-machine patch.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

The Churn Detection machines detect the situation where a port is operable,
but the Actor and Partner have not attached the link to an Aggregator and
brought the link into operation within a bound time period. Under normal
operation of the LACP, agreement between Actor and Partner should be reached
very rapidly. Continued failure to reach agreement can be symptomatic of
device failure.

Actor-churn-detection state-machine
Reviewed-by: Nikolay Aleksandrov <nikolay@redhat.com>

===================================

BEGIN=True + PortEnable=False
           |
           v
 +------------------------+   ActorPort.Sync=True  +------------------+
 |   ACTOR_CHURN_MONITOR  | ---------------------> |  NO_ACTOR_CHURN  |
 |========================|                        |==================|
 |    ActorChurn=False    |  ActorPort.Sync=False  | ActorChurn=False |
 | ActorChurn.Timer=Start | <--------------------- |                  |
 +------------------------+                        +------------------+
           |                                                ^
           |                                                |
  ActorChurn.Timer=Expired                                  |
           |                                       ActorPort.Sync=True
           |                                                |
           |                +-----------------+             |
           |                |   ACTOR_CHURN   |             |
           |                |=================|             |
           +--------------> | ActorChurn=True | ------------+
                            |                 |
                            +-----------------+

Similar for the Partner-churn-detection.
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The 802.1AX standard states:
"The DA in LACPDUs is the Slow_Protocols_Multicast address."

This patch enforces that and drops LACPDUs with destination MAC
addresses other than Slow_Protocols_Multicast address
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2015-02-23

This series contains updates to e1000e, igbvf, i40e and i40evf.

David adds support for i219 devices to the e1000e driver.

Jeff (me) provides two patches to cleanup igbvf, first cleans up the
whitespace issues found and the second cleans up the usage of msleep(),
min() and max() with usleep_range(), min_t() and max_t() respectively.

Kamil updates the shadow RAM read/write functions by refactoring them
to prepare for future work.

Shannon renames the debugfs command "clear_stats pf" to clear_stats port"
to clarify what the function really does.

Mitch refactors the receive routine, by splitting the receive hot path
code into two, one for packet split and one for single buffer, which
improves receive performance.  Disables NAPI polling sooner when closing
the interface to fix an occasional panic during close which was
caused by the driver trying to delete and clean rings at the same time.
Also refactors reset for i40evf, since a recent change to the shutdown
flow messed up the reset flow.  Since i40evf_down() now holds the
critical section lock, we cannot call it from the reset handler, which
also holds the lock.

Nicholas restricts the virtual channel opcodes should remain consistent
between updates to the opcode enum.

Neerav converts the VSI connection type to use a #define instead of
using a magic number.

Anjali updates the registers file to remove registers no longer available.
Also fixes the EMPR interrupt handling, so that we won't trigger another
EMPR when we receive an EMPR event.

Catherine cleans up the variable an_enable since it was set and never
used.

Greg fixes the netdev op that allows the operator to turn MAC/VLAN
spoof checking on and off so that it includes the flag for VLAN spoof
checking.

v2: Updated patch #10 in the series to use test_and_clear_bit() as
    suggested by Sergei Shtylyov
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Petri Gynther says:

====================
net: bcmgenet: Tx init improvements

Four small patches to improve bcmgenet Tx init:
1. bcmgenet_init_tx_ring() cleanup
2. rework Tx queue init
3. precalculate TxCB->bd_addr
4. rename bcmgenet_hw_params->bds_cnt and GENET_DEFAULT_BD_CNT
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

bcmgenet_hw_params->bds_cnt and GENET_DEFAULT_BD_CNT are used only in Tx init.
Rename them accordingly:
- bcmgenet_hw_params->bds_cnt => bcmgenet_hw_params->tx_bds_per_q
- GENET_DEFAULT_BD_CNT => GENET_Q16_TX_BD_CNT
Signed-off-by: Petri Gynther <pgynther@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

There is 1-to-1 mapping between TxCBs and TxBDs. Precalculate TxCB->bd_addr
once in bcmgenet_init_dma() instead of doing it over and over needlessly in
bcmgenet_get_txcb().
Signed-off-by: Petri Gynther <pgynther@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1. Rename bcmgenet_init_multiq() to bcmgenet_init_tx_queues()
2. Fix bcmgenet_init_tx_queues() function description
3. Move Tx default queue init inside bcmgenet_init_tx_queues()
4. Modify bcmgenet_init_dma() to call bcmgenet_init_tx_queues()
Signed-off-by: Petri Gynther <pgynther@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1. Simplify function description
2. Rename function parameter write_ptr to start_ptr to better indicate use
3. Remove unnecessary local variable first_bd
4. Remove out-of-place comment "Unclassified traffic goes to ring 16"
5. Fix TDMA_WRITE_PTR register init
Signed-off-by: Petri Gynther <pgynther@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Ben Hutchings says:

====================
pktgen documentation cleanup and samples

This series cleans up the pktgen documentation, adds and improves the
original sample scripts.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Drop the '.o' suffix so this text properly covers both the
built-in and modular cases.

'insmod pktgen' obviously won't work; the command should be modprobe.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

Otherwise ^C stops the script, not just pktgen.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

These scripts use the non-POSIX 'function' and 'local' keywords so
they won't work with every /bin/sh.  We could drop 'function' as it is
a no-op, but 'local' makes for cleaner scripts.  Require use of bash.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

They all claimed to be two CPU examples using eth1, eth2 but
that is only true in one case!

Rob Jones pointed out spelling and grammar errors here, which I've
also corrected.

Cc: Rob Jones <rob.jones@codethink.co.uk>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

This function is not used and wouldn't do anything useful as
pktgen does not have an 'inject' command.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

These are Robert Olsson's samples which used to be available from
<ftp://robur.slu.se/pub/Linux/net-development/pktgen-testing/examples/>
but currently are not.

Change the documentation to refer to these consistently as 'sample
scripts', matching the directory name used here.

Cc: Robert Olsson <robert@herjulf.se>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

Thanks to Rob Jones for suggesting some of the changes.

Cc: Rob Jones <rob.jones@codethink.co.uk>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

This has been updated quite a few times since 2004, and git can
keep track of the actual date for us.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

Under rare circumstances, after a reset, set_rx_mode might get called
while the watchdog is running, which will cause a deadlock on the
critical section lock. To correct this, add a counter and give up trying
to get the lock after fifty tries. Log a message if this happens but
don't take any other action. Because this happens after a reset, all of
the Rx filters are still in place and the device won't lose
connectivity.

We can also get stuck during shutdown, if the PF has stopped communicating
with us, or if a reset is occurring. If we can't get the lock after a reasonable
amount of time, just error out. Something else bad is happening anyway, so
adding this filter is the least of our concern right now.

Change-ID: I159731e2a82a06b389ee31b34ce336548e05baa0
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

A recent change to the shutdown flow messed up the reset flow. Since
i40evf_down now holds the critical section lock, we cannot call it from
the reset handler, which also holds the lock. To do so causes a deadlock
accompanied by wailing and gnashing of teeth. This is easily triggered
by running an ethtool self-test on the PF device.

Instead, we move the relevant portions of i40evf_down into the reset
handler and bend them to our will. Additionally, we can optimize the
reinit path by not deleting the MAC and VLAN filters and then adding
them back again. Instead, we just set the 'add' flag and let the
watchdog resynchronize the filter list with the PF driver. We also
reword a few messages to make them more consistent with the rest of the
driver.

Change-ID: I03dd92ae736f7719fca3564b12a2cf9b98c6cb18
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

When closing the interface, disable NAPI polling before any other
activities. This fixes an occasional panic during close caused by the
driver trying to delete and clean rings at the same time.

Change-ID: Ib4d427b13d310258ea85b248d535da70ecf0c1e9
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

The netdev op that allows the operator to turn MAC/VLAN spoof checking on
and off did not include the flag for VLAN spoof checking.  This patch
fixes that problem.

Change-ID: Ib4c9e639024a854592d97af22706544881ac3fcb
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Bump i40e to 1.2.8 and i40evf to 1.2.2

Change-ID: I64f47c3367ea8ff2a53068e895d7a1f60726c871
Signed-off-by: Sravanthi Tangeda <sravanthi.tangeda@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

An_enable was never used only set so lets remove it. The function
update_link_info only did two things, call get_link_info and set
an_enabled. Therefore we should also remove update_link_info and
change all references to it to get_link_info.

Change-ID: Ie3022680fa7a94bfd495a4f5fc76a73701d85569
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

We shouldn't trigger another EMPR when we receive an EMPR event.
This patch handles EMPR event reception with a different state
so that we can do the right thing for NVM.

Change-ID: I9cac70b3658600f016a65beb6fb157e1c1f9adf9
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Some registers have been removed so take them out and
stop updating and looking at them.

Change-ID: I33da922c8de993a94dd8b8d8a2ae2146b8ca1a27
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Use #defined VSI connection type values instead of using magic numbers.

Change-ID: I2f6cf7bf394d391e1c0fe61779e9e4ad8858154a
Signed-off-by: Neerav Parikh <neerav.parikh@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Until the time a more robust versioning scheme is needed/implemented all
established virtual channel opcode values should remain consistent between
updates to the opcode enum.

This patch repositions I40E_VIRTCHNL_OP_CONFIG_RSS to the end of the enum. In
its current position this opcode displaces the initial value of
I40E_VIRTCHNL_OP_EVENT and will cause PF/VF compatibility issues.

Going forward the expectation is either:
	a) All future opcode additions will be added as the last element of the
	enum. Once VF drivers start making use of the new commands the virtual
	channel version will need to be incremented and drivers will need to
	implement a simple version check whereby VF drivers can only load on
	PFs with a >= version.
	b) or, if needed, design and implement a more complicated API
	negotiation capability.

In either case PF drivers should always maintain backwards compatibility with
earlier VF driver versions.

Change-ID: Ie245daa09a231b6680ed793d648bdcc76caefe58
Signed-off-by: Nicholas Nunley <nicholas.d.nunley@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Split the receive hot path code into two, one for packet split and one
for single buffer. This improves receive performance since we only need
to check if the ring is in packet split mode once per NAPI poll time,
not several times per packet. The single buffer code is further improved
by the removal of a bunch of code and several variables that are not
needed. On a receive-oriented test this can improve single-threaded
throughput.

Also refactor the packet split receive path to use a fixed buffer for
headers, like ixgbe does. This vastly reduces the number of DMA mappings
and unmappings we need to do, allowing for much better performance in
the presence of an IOMMU.

Lastly, correct packet split descriptor types now that we are actually
using them.

Change-ID: I3a194a93af3d2c31e77ff17644ac7376da6f3e4b
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Change debugfs command from "clear_stats pf" to "clear_stats port"
to be clearer what the action is.  Also, limit the action to the
base PF, not the NPAR partitions.

Change-ID: I22aa39c0962d83a83a985097b1000ed7f8c66f3f
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

This change is to refactor the read/write functions to support
future work.

Change-ID: I13150d5e3042f2c617362c0140dc7e6473ebcdee
Signed-off-by: Kamil Krawczyk <kamil.krawczyk@intel.com>
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Fixed a few cases of when we used msleep() when we should have been
using usleep_range().  Also updated the usage of min/max() to use
min_t/max_t().
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>

Fix the code comments to align with the drivers/net/ commenting style.
Also fix other checkpatch errors such as using tabs where possible and
properly wrap lines to conform to the 80 char limit (unless it is
a string).
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>

i219 is the next-generation LOM that will be available on systems with the
Sunrise Point Platform Controller Hub (PCH) chipset from Intel.  This patch
provides the initial support for the device.
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Tested-by: Carmen Edwards <carmenx.edwards@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Sathya Perla says:

====================
be2net: patch set

Hi Dave, the following patch set reduces code duplication
in probe/pci-resume/eeh-resume and remove/pci-suspend/eeh-error and UE-error
detect/recovery paths. New helper routines have been introduced for this
purpose. Pls apply this set to the net-next tree. Thanks!

Patch 1 refactors the alloc/free code of adapter struct's fields into
a new set of helper routines -- be_drv_init/cleanup().

Patch 2 gets rid of the be_get_initial_config() routine as be_get_config()
is the place holder for related code.

Patch 3 introduces a new helper routine be_func_init() to execute the
initialization code used in probe/pci-resume/eeh-resume to remove
code duplication.

Patch 4 introduces a wrapper for scheduling/canceling error detection
task on similar lines to the be_worker task.

Patch 5 refactors UE error detection and recovery code on similar lines
to EEH code. Cleaning up resources is done in the error detection routine
followed by error recovery.

Patch 6 gets rid of the lancer_test_and_set_rdy_state() routine as the
same code now available in be_func_init().

Patch 7 creates a new helper routine be_resume() for all the common code
in be_probe(), be_pci_resume() and be_eeh_resume(), to reduce code duplication.

Patch 8 creates a new helper routine be_cleanup() for all the common
cleanup code duplicated in the suspend/EEH err detection paths.

Patch 9 moves be_func_init() inside be_setup() as everytime be_setup()
is called, the driver will have to wait for the function/FW to be be
initialized.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Every time be_setup() is called, the driver will have to wait for the
function/FW to be properly initialized. So, it make sense to move this call
inside be_setup().
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: Kalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>