When SR-IOV is disabled, the (now nonexistent) virtual function
devices undergo a VFLR event. We don't need to handle this event
because the VFs are gone, but we do need to tell the HW that they are
complete. This fixes an issue with a phantom VFLR and broken VFs when
SR-IOV is re-enabled.

Change-Id: I7580b49ded0158172a85b14661ec212af77000c8
Signed-off-by: NMitch Williams <mitch.a.williams@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NSibai Li <sibai.li@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Shockingly, the compiler didn't flag this uninitialized variable. This
fixes a potential memory corruption condition where ARQ messages are
written to random memory locations.

Change-Id: Iac82f4562d2bf3f42df3f3b2163d9cbed2160135
Signed-off-by: NMitch Williams <mitch.a.williams@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NSibai Li <sibai.li@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Use struct assignment rather than an expensive memory copy.

Change-Id: I1d18d510774dfd41a9c1250cdef238a4187528f5
Signed-off-by: NMitch Williams <mitch.a.williams@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NSibai Li <sibai.li@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Enabling the default port on the VEB causes all outgoing traffic from
virtual functions to be copied to the physical function.  The default
port is only supposed to be used if you wish to bridge the physical
function to a SW switch such as Open vSwitch or the Linux bridge. That
allows the SW switch to route traffic to VMs that are not using a
virtual function.

Eventually we'll want to implement the ndo_fdb_add, ndo_fdb_del, and
ndo_fdb_dump functions.  The ndo_fdb_add function would set the
default port on the VEB in those cases where the MAC/VLAN address
filters have overflowed.  Normally we would not want to use it.

Change-Id: I3990f0384fff2840c4e43bc0955dd0b701380852
Signed-off-by: NGreg Rose <gregory.v.rose@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NSibai Li <sibai.li@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

We don't need to read the base VF id. It's already stashed in the HW
struct.

Change-Id: Ib81e2f76fc40b12c966e014a856b481912cafefc
Signed-off-by: NMitch Williams <mitch.a.williams@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NSibai Li <sibai.li@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Trivial whitespace fix.

Change-Id: Ib7c70891a33c4b3d200c69367549d0dbdee0f076
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch fixes two different problems.
1) The port VLAN configuration was not persistent across VF driver
   loads and unloads.

2) The port VLAN configuration was only correct the first time it was
   set. Switching the port VLAN on and off would cause subsequent VLAN
   configurations to be corrupted in the VSI.  Ensure that the correct
   bits are being set for the VSI port VLAN configuration.

Change-Id: I7ebf5329f77eb8d73ccd3324eb346b3abeea737d
Signed-off-by: NGreg Rose <gregory.v.rose@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NSibai Li <sibai.li@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Save information that we can use while cleaning the tx ring. Also record
the time_stamp since we will need it to check tx hangs.

Change-Id: Ia3f1c17f6fec9bcb7fef2542d77eac7f6c4f115c
Signed-off-by: NAnjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Check if the device get enough bandwidth from the entire PCI chain to satisfy
its capabilities. This patch determines the PCIe device's bandwidth capabilities
by reading its PCIe Link Capabilities registers and then call the
pcie_get_minimum_link function to ensure that the adapter is hooked into a slot
which is capable of providing the necessary bandwidth capabilities.
Signed-off-by: NEyal Perry <eyalpe@mellanox.com>
Signed-off-by: NAmir Vadai <amirv@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates

This series contains updates to i40e only.

Anjali provides two cleanups to remove unnecessary code and a fix
to resolve debugfs dumping only half the NVM.  Then provides a fix
to ethtool NVM reads where shadow RAM was used instead of actual
NVM reads.

Jesse provides a couple of fixes, one removes custom i40e functions
which duplicate existing kernel functionality.  Second fixes constant
cast issues by replacing __constant_htons with htons.

Mitch provides a couple of fixes for the VF interfaces in i40e.  First
provides a fix to guard against VF message races with can cause a panic.
Second fix reinitializes the buffer size each time we clean the ARQ,
because subsequent messages can be truncated. Lastly adds functionality
to enable/disable ICR 0 dynamically.

Vasu adds a simple guard against multiple includes of the i40e_txrx.h
file.

Shannon provides a couple of fixes, first fix swaps a couple of lines
around in the error handling if the allocation for the VSI array fails.
Second fixes an issue where we try to free the q_vector that has not
been setup which can panic the kernel.

David provides a patch to save off the point to memory and the length
of 2 structs used in the admin queue in order to store all info about
allocated kernel memory.

Neerav fixes ring allocation where allocation and clearing of rings
for a VSI should be using the alloc_queue_pairs and not num_queue_pairs.
Then removes the unused define for multi-queue enabled.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

macvlan needs vlan_pcpu_stats so make it visible even if compiling
without VLAN_8021Q support. Otherwise a very long compiler error happens.

Fixes: cdf3e274 ("macvlan: unify macvlan_pcpu_stats and vlan_pcpu_stats")
Cc: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: NHannes Frederic Sowa <hannes@stressinduktion.org>
Acked-By: NLi RongQing <roy.qing.li@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

netdev_kobject_init() is only being called from __init context,
that is, net_dev_init(), so annotate it with __init as well, thus
the kernel can take this as a hint that the function is used only
during the initialization phase and free up used memory resources
after its invocation.
Signed-off-by: NDaniel Borkmann <dborkman@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Pablo Neira Ayuso says:

====================
netfilter/IPVS updates for net-next

The following patchset contains Netfilter updates for your net-next tree,
they are:

* Add full port randomization support. Some crazy researchers found a way
  to reconstruct the secure ephemeral ports that are allocated in random mode
  by sending off-path bursts of UDP packets to overrun the socket buffer of
  the DNS resolver to trigger retransmissions, then if the timing for the
  DNS resolution done by a client is larger than usual, then they conclude
  that the port that received the burst of UDP packets is the one that was
  opened. It seems a bit aggressive method to me but it seems to work for
  them. As a result, Daniel Borkmann and Hannes Frederic Sowa came up with a
  new NAT mode to fully randomize ports using prandom.

* Add a new classifier to x_tables based on the socket net_cls set via
  cgroups. These includes two patches to prepare the field as requested by
  Zefan Li. Also from Daniel Borkmann.

* Use prandom instead of get_random_bytes in several locations of the
  netfilter code, from Florian Westphal.

* Allow to use the CTA_MARK_MASK in ctnetlink when mangling the conntrack
  mark, also from Florian Westphal.

* Fix compilation warning due to unused variable in IPVS, from Geert
  Uytterhoeven.

* Add support for UID/GID via nfnetlink_queue, from Valentina Giusti.

* Add IPComp extension to x_tables, from Fan Du.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Driver needs to clean PBA only when interrupts are turned off and we
are polling instead.

Change-Id: Ic0c1da761bd3abe7f73b1cc8bcddf8e3a232fd0f
Signed-off-by: NAnjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

These functions don't need a prototype as they are defined
in the file before they are called.

Change-Id: Ie17ffad4a29a9c0df434c4ebc4681128a6095c65
Signed-off-by: NAnjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Remove references to I40E_FLAG_MQ_ENABLED from the code
as it doesn't seem to be used anywhere.

Change-Id: I4c89fb65b2cdd26fbb0c58fccbbb4b03f0e5f1b3
Signed-off-by: NNeerav Parikh <Neerav.Parikh@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

The allocation and clearing of rings for a VSI should be
using the alloc_queue_pairs and not num_queue_pairs.

The alloc_queue_pairs per VSI is a pre-allocated number
of queues assigned to a VSI; based on number of TCs enabled
only certain number of queues may be used from that. This
is mainly valid only for the LAN VSI case as that is the
only VSI that may be enabled with multiple traffic classes.
In the future the number of TCs may change based on DCBX
configuration.

The actual number of queues that are enabled/configured is
based on the number of TCs enabled for a given VSI and that
is stored in num_queue_pairs.

With this change num_[tr]x_queues is unused so remove them.

Change-Id: I9c2f84778bb25f7313c630e9b002a0caa883ce29
Signed-off-by: NNeerav Parikh <Neerav.Parikh@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Don't try to free a q_vector that hasn't been set up as it can
panic the kernel.

Change-Id: I0650cc6c441d0779788c522c790293c276d14fbc
Signed-off-by: NShannon Nelson <shannon.nelson@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Save both a pointer to memory and the length in order to store all
info about allocated kernel memory.  This patch changes some adminq
allocations to preserve the full i40e_dma_mem/i40e_virt_mem structs
for every allocation.

Change-Id: Ibcf96159aba4ba61f839d16d87d19478df28e630
Signed-off-by: NDavid Cassard <david.g.cassard@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Swap a couple lines around in the error handling if the kzalloc() for
the pf->vsi array fails.  This was causing a kernel BUG because the
call to i40e_clear_interrupt_scheme() was assuming the pf->vsi[] array
existed.  In this fix it is possible that i40e_reset_interrupt_capability()
will get called twice, but this is a safe action.

Change-Id: I939163ccaa89baac7511556d36bc873864c35ae1
Signed-off-by: NShannon Nelson <shannon.nelson@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

When cleaning the ARQ, we must reinitialize the buffer size each time we
go through the loop, because i40e_clean_arq_element returns the message
length in the same field. Without this change, subsequent messages can
be truncated to the length of the previous message.

Change-Id: Ic9c32ff843faf0fc3196d21351a1c3a60c6158eb
Signed-off-by: NMitch Williams <mitch.a.williams@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Tested-by: NSibai Li <sibai.li@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Introduce i40e_irq_dynamic_disable_icr0 and use it and its previously-
extant counterpart when appropriate.

Change-Id: Ieb4037874fba2e96fc2354b34a97a3cb8f6490f3
Signed-off-by: NMitch Williams <mitch.a.williams@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Tested-by: NSibai Li <sibai.li@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Add an include header guard to guard against multiple includes

Change-Id: I73efa03efc912d2047edab903c7caed05b444da2
Signed-off-by: NVasu Dev <vasu.dev@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

When disabling and enabling VFs on a live system with the VF driver
loaded, it's possible to receive an admin queue message from the VF
driver at an inconvenient time, e.g. when the associated data structures
aren't present or configured. This causes a rather inconvenient panic.

To guard against this, we change the order of when we set num_alloc_vfs
when turning off SR-IOV, and then gate processing of any VF messages
based upon that value. Likewise, when enabling VFs, we shut off the
relevant interrupt until configuration is complete.

Change-Id: I0c172c056616c2bebd78bbc807ab446eb484deea
Signed-off-by: NMitch Williams <mitch.a.williams@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NSibai Li <sibai.li@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

replace __constant_htons with htons

Change-Id: I123a5318bae34c8b004c71db07c56f137c685849
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Earlier we were reading Shadow RAM (copy of the NVM) which can differ
from the actual NVM. Use AQ instead to read the actual NVM.

Change-Id: Ia0f2773b722db77d093f738c068af872be69bbd4
Signed-off-by: NAnjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Remove custom i40e functions around ethernet addresses that are
duplicating already existing kernel functionality.

Also ends up fixing a bug with multicast addresses.
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Debugfs was reading exactly half the number of words, fix it.

Change-Id: Ieb217f3c6dca455d44e50a0dc61a6664c0cb2265
Signed-off-by: NAnjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

bgmac: add initial support for core rev 4 on ARM BCM47xx

====================
This adds support for core rev 4 and ARM BCM47XX.
With an other fix to the platform code I am now getting over 200 MBit/s
with this Ethernet driver, the DMA problems are solved are unrelated
to bgmac.

v3:
   - moved flags calculation for bcma_core_enable() into if block
   - remove hard coding of phy address to BGMAC_PHY_NOREGS

v2: add changed suggested by Rafał
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This adds support for the Northstar SoC. This SoC does not have a PMU in
bcma and no register on it should be called. In addition it support 2.5
GBit/s Ethernet to the PHY.

This GMAC core is not fully working there are still problems with the
DMA controller.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

On the Northstar SoC (BCM4707 and BCM53018) we have to enable all GMAC
cores when we just want to use on. We iterate over all the cores and
activate them.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Acked-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The BGMAC_CMDCFG_SR register is at a different position on core rev >= 4
We do not know where this register is on a rev 5 or higher core, I have
newer seen such a core.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Acked-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The DMA controller used in the device supported by GMAC with core rev
>= 4 has some new options which are now set to the default values used
in the Broadcom SDK.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Acked-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This function is used to get a specific core when there is more than
one core of that specific type. This is used in bgmac to reset all GMAC
cores.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Acked-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Remove dead code;
       tipc_bearer_find_interface
       tipc_node_redundant_links

This may break out of tree version of TIPC if there still is one.
But that maybe a good thing :-)
Signed-off-by: NStephen Hemminger <stephen@networkplumber.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NStephen Hemminger <stephen@networkplumber.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Make DCCP module config variable static, only used in one file.
Signed-off-by: NStephen Hemminger <stephen@networkplumber.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This function is defined but not used.
Remove it now, can be resurrected if ever needed.
Signed-off-by: NStephen Hemminger <stephen@networkplumber.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

They are same, so unify them as one; since macvlan is a kind of vlan,
vlan_pcpu_stats should be a proper name for vlan and macvlan.
Signed-off-by: NLi RongQing <roy.qing.li@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

They are same, so unify them as one, pcpu_sw_netstats.

Define pcpu_sw_netstat in netdevice.h, remove pcpu_tstats
from if_tunnel and remove br_cpu_netstats from br_private.h

Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: NLi RongQing <roy.qing.li@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>