GitHub/moto-9609/android_kernel_motorola_exynos9610.git
7 years agoi40e/i40evf: Use build_skb to build frames
Alexander Duyck [Wed, 5 Apr 2017 11:51:03 +0000 (07:51 -0400)]
i40e/i40evf: Use build_skb to build frames

This patch is meant to improve the performance of the Rx path.
Specifically by using build_skb we have several distinct advantages.

In the case of small frames we were previously using a copy-break approach.
This means that we were allocating a page fragment to use for skb->head,
and were having to copy the packet into that region.  Both of those calls
are now avoided since we just build the skb around the data.

In the case of large frames the gains are much more significant.
Specifically we were having to allocate skb->head, and copy the headers as
before.  However in addition we were having to parse the header using
eth_get_headlen which could be quite expensive.  All of this is avoided by
building the frame around the data.  I have seen gains as high as 30% when
using VXLAN for instance due to just header pulling overhead.

Finally with all this in place it also sets us up to start looking at
enabling XDP.  Specifically we now have a path in which the data is in the
page and the frame is built around it.  So if we parse it with XDP before
we call build_skb we can take care of any necessary processing there.

Change-ID: Id4bdd618e94473d41f892417e5d8019639e421e3
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e/i40evf: Add support for padding start of frames
Alexander Duyck [Wed, 5 Apr 2017 11:51:02 +0000 (07:51 -0400)]
i40e/i40evf: Add support for padding start of frames

This patch adds padding to the start of frames to make room for headroom
for us to eventually start using build_skb.  Right now we guarantee at
least NET_SKB_PAD + NET_IP_ALIGN, however we allocate more space if more is
available.  For example on x86 the headroom should be 192 bytes.

On systems that have too large of a cache line size to support storing 1.5K
padding and shared info we default to using 3K buffers and reserve
everything that isn't used for skb_shared_info or the data buffer for
headroom.

Change-ID: I33c641c9a1ea10cf7cc484c2d20985368d2d709a
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e/i40evf: Add support for using order 1 pages with a 3K buffer
Alexander Duyck [Wed, 5 Apr 2017 11:51:01 +0000 (07:51 -0400)]
i40e/i40evf: Add support for using order 1 pages with a 3K buffer

There are situations where adding padding to the front and back of an Rx
buffer will require that we add additional padding.  Specifically if
NET_IP_ALIGN is non-zero, or the MTU size is larger than 7.5K we would need
to use 2K buffers which leaves us with no room for the padding.

To preemptively address these cases I am adding support for 3K buffers to
the Rx path so that we can provide the additional padding needed in the
event of NET_IP_ALIGN being non-zero or a cache line being greater than 64.

Change-ID: I938bc1ba611285428df39a613cd66f98e60b55c7
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e: clean up historic deprecated flag definitions
Jacob Keller [Wed, 5 Apr 2017 11:51:00 +0000 (07:51 -0400)]
i40e: clean up historic deprecated flag definitions

Since an early commit a few flags have no longer
been used. Remove these definitions to reduce code clutter.

Change-ID: I3589be4622574e747013cd4dc403e18b039f4965
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e: remove I40E_FLAG_NEED_LINK_UPDATE
Alice Michael [Sat, 8 Apr 2017 06:01:35 +0000 (23:01 -0700)]
i40e: remove I40E_FLAG_NEED_LINK_UPDATE

The I40E_FLAG_NEED_LINK_UPDATE was never used. Remove the flag
definitions.

Change-ID: If59d0c6b4af85ca27281f3183c54b055adb439a4
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e: remove extraneous loop in i40e_vsi_wait_queues_disabled
Jacob Keller [Wed, 5 Apr 2017 11:50:58 +0000 (07:50 -0400)]
i40e: remove extraneous loop in i40e_vsi_wait_queues_disabled

We can simply check both Tx and Rx queues in a single loop, rather than
repeating the loop twice.

Change-ID: Ic06f26b0e3c2620e0e33c1a2999edda488e647ad
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e: allow look-up of MAC address from Open Firmware or IDPROM
Jacob Keller [Wed, 5 Apr 2017 11:50:57 +0000 (07:50 -0400)]
i40e: allow look-up of MAC address from Open Firmware or IDPROM

Look up the MAC address from the eth_get_platform_mac_address() function
first before checking what the firmware provides. We already handle the
case of re-writing the MAC-VLAN filter, so there is no need to add extra
code for this. However, update the comment where we do this to indicate
that it does impact the Open Firmware MAC address case.

Change-ID: I73e59fbe0b0e7e6f3ee9f5170d0bd3a4d5faf4db
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e: Simplify i40e_detect_recover_hung_queue logic
Alan Brady [Wed, 5 Apr 2017 11:50:56 +0000 (07:50 -0400)]
i40e: Simplify i40e_detect_recover_hung_queue logic

This patch greatly reduces the unneeded complexity in the
i40e_detect_recover_hung_queue code path.  The previous implementation
set a 'hung bit' which would then get cleared while polling.  If the
detection routine was called a second time with the bit already set, we
would issue a software interrupt.  This patch makes it such that if
interrupts are disabled and we have pending TX descriptors, we trigger a
software interrupt since in, the worst case, queues are already clean
and we have an extra interrupt.

Additionally this patch removes the workaround for lost interrupts as
calling napi_reschedule in this context can cause software interrupts to
fire on the wrong CPU.

Change-ID: Iae108582a3ceb6229ed1d22e4ed6e69cf97aad8d
Signed-off-by: Alan Brady <alan.brady@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e: Decrease the scope of rtnl lock
Maciej Sosin [Wed, 5 Apr 2017 11:50:55 +0000 (07:50 -0400)]
i40e: Decrease the scope of rtnl lock

Previously rtnl lock was held during whole reset procedure that
was stopping other PFs running their reset procedures. In the result
reset was not handled properly and host reset was the only way
to recover.

Change-ID: I23c0771c0303caaa7bd64badbf0c667e25142954
Signed-off-by: Maciej Sosin <maciej.sosin@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e: Swap use of pf->flags and pf->hw_disabled_flags for ATR Eviction
Alexander Duyck [Wed, 5 Apr 2017 11:50:54 +0000 (07:50 -0400)]
i40e: Swap use of pf->flags and pf->hw_disabled_flags for ATR Eviction

This is a minor cleanup so that we are always updating pf->flags when we
make a change to the private flags instead of updating a mix of either
pf->flags and/or pf->hw_disabled_flags.

In addition I went through and cleaned out all the spots where we were
using the X722 define in regards to this flag.

Lastly since we changed the logic I went through and flushed out any
redundancy and cleaned up the handling of the flags in the Tx path.

Change-ID: I79ff95a7272bb2533251ff11ef91e89ccb80b610
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e: update error message when trying to add invalid filters
Jacob Keller [Wed, 5 Apr 2017 11:50:53 +0000 (07:50 -0400)]
i40e: update error message when trying to add invalid filters

Re-word the error message displayed when adding a filter with an
invalid flow type. Additionally, report a distinct error message when
the IPv4 protocol is at fault.

Change-ID: Iba3d85b87f8d383c97c8bdd180df34a6adf3ee67
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e: only register client on iWarp-capable devices
Mitch Williams [Tue, 4 Apr 2017 19:40:16 +0000 (12:40 -0700)]
i40e: only register client on iWarp-capable devices

The client interface is only intended for use on devices that support
iWarp. Only register with the client if this is the case.

This fixes a panic when loading i40iw on X710 devices.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Reported-by: Stefan Assmann <sassmann@kpanic.de>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agonet: thunderx: Enable TSO and checksum offloads for ipv6
Thanneeru Srinivasulu [Thu, 6 Apr 2017 10:42:26 +0000 (16:12 +0530)]
net: thunderx: Enable TSO and checksum offloads for ipv6

Adding support for TSO and checksum hardware offloads for ipv6.

Signed-off-by: Thanneeru Srinivasulu <tsrinivasulu@cavium.com>
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'dsa-mediatek-MT7530'
David S. Miller [Fri, 7 Apr 2017 20:52:23 +0000 (13:52 -0700)]
Merge branch 'dsa-mediatek-MT7530'

Sean Wang says:

====================
net-next: dsa: add Mediatek MT7530 support

MT7530 is a 7-ports Gigabit Ethernet Switch that could be found on
Mediatek router platforms such as MT7623A or MT7623N which includes 7-port
Gigabit Ethernet MAC and 5-port Gigabit Ethernet PHY. Among these ports,
The port from 0 to 4 are the user ports connecting with the remote devices
while the port 5 and 6 are the CPU ports connecting into Mediatek Ethernet
GMAC.

The patch series integrated Mediatek MT7530 into DSA support which
includes the most of the essential callbacks such as tag insertion for
port distinguishing, port control, bridge offloading, STP setup and
ethtool operations to allow DSA to model each user port into independently
standalone netdevice as the other DSA driver had done.

Changes since v1:
- rebased into 4.11-rc1
- refined binding document including below five items
- changed the type of mediatek,mcm into bool
- used reset controller binding for MCM reset and removed "mediatek,ethsys"
  property from binding
- reused CPU port's ethernet Phandle instead of creating new one and removed
  "mediatek,ethernet" property from binding
- aligned naming for GPIO reset with dsa/marvell.txt
- added phy-mode as required property child nodes within ports container
- handled gpio reset with devm_gpiod_* API
- refined comment words
- removed condition for CDM setting since the setup looks both fine for all cases
- allowed of_find_net_device_by_node() working with pointing the device node into
  real netdev instance
- fixed Kbuild warnings

Changes since v2:
- reuse readx_poll_timeout() to poll
- add proper macro instead of hard coding
- treat inconsistent cpu port as warning
- remove the usage for regmap-debugfs
- show error message when invalid id is found
- put the logic for the setup of trgmii into adjut_link()
- refine and reuse logic between port_[disable,enable], and default port setup
- correct typo

Changes since v3:
- used struct as the parameter for readx_poll_timeout() and kill
  extra lpriv defined
- moved around function to get out of an additional declaration
- fixed kbuild errors caused by missing proper include in the latest tree
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet-next: dsa: add dsa support for Mediatek MT7530 switch
Sean Wang [Fri, 7 Apr 2017 08:45:09 +0000 (16:45 +0800)]
net-next: dsa: add dsa support for Mediatek MT7530 switch

MT7530 is a 7-ports Gigabit Ethernet Switch that could be found on
Mediatek router platforms such as MT7623A or MT7623N platform which
includes 7-port Gigabit Ethernet MAC and 5-port Gigabit Ethernet PHY.
Among these ports, The port from 0 to 4 are the user ports connecting
with the remote devices while the port 5 and 6 are the CPU ports
connecting into Mediatek Ethernet GMAC.

For port 6, it can communicate with the CPU via Mediatek Ethernet GMAC
through either the TRGMII or RGMII which could be controlled by phy-mode
in the dt-bindings to specify which mode is preferred to use. And for
port 5, only RGMII can be specified. However, currently, only port 6 is
being supported in this DSA driver.

The driver is made with the reference to qca8k and other existing DSA
driver. The most of the essential callbacks of the DSA are already
support in the driver, including tag insert for user port distinguishing,
port control, bridge offloading, STP setup and ethtool operation to allow
DSA to model each user port into a standalone netdevice as the other DSA
driver had done.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Landen Chao <Landen.Chao@mediatek.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet-next: ethernet: mediatek: add device_node of GMAC pointing into the netdev instance
Sean Wang [Fri, 7 Apr 2017 08:45:08 +0000 (16:45 +0800)]
net-next: ethernet: mediatek: add device_node of GMAC pointing into the netdev instance

the patch adds the setup of the corresponding device node of GMAC into the
netdev instance which could allow other modules such as DSA to find the
instance through the node in dt-bindings using of_find_net_device_by_node()
call.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet-next: ethernet: mediatek: add CDM able to recognize the tag for DSA
Sean Wang [Fri, 7 Apr 2017 08:45:07 +0000 (16:45 +0800)]
net-next: ethernet: mediatek: add CDM able to recognize the tag for DSA

The patch adds the setup for allowing CDM can recognize these packets with
carrying port-distinguishing tag. Otherwise, these tagging packets will be
handled incorrectly by CDM. The setup is also working out for general
untag packets as well.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Landen Chao <Landen.Chao@mediatek.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet-next: dsa: add Mediatek tag RX/TX handler
Sean Wang [Fri, 7 Apr 2017 08:45:06 +0000 (16:45 +0800)]
net-next: dsa: add Mediatek tag RX/TX handler

Add the support for the 4-bytes tag for DSA port distinguishing inserted
allowing receiving and transmitting the packet via the particular port.
The tag is being added after the source MAC address in the ethernet
header.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Landen Chao <Landen.Chao@mediatek.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agodt-bindings: net: dsa: add Mediatek MT7530 binding
Sean Wang [Fri, 7 Apr 2017 08:45:05 +0000 (16:45 +0800)]
dt-bindings: net: dsa: add Mediatek MT7530 binding

Add device-tree binding for Mediatek MT7530 switch.

Cc: devicetree@vger.kernel.org
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: ipv4: fix multipath RTM_GETROUTE behavior when iif is given
Florian Larysch [Fri, 7 Apr 2017 12:42:20 +0000 (14:42 +0200)]
net: ipv4: fix multipath RTM_GETROUTE behavior when iif is given

inet_rtm_getroute synthesizes a skeletal ICMP skb, which is passed to
ip_route_input when iif is given. If a multipath route is present for
the designated destination, fib_multipath_hash ends up being called with
that skb. However, as that skb contains no information beyond the
protocol type, the calculated hash does not match the one we would see
for a real packet.

There is currently no way to fix this for layer 4 hashing, as
RTM_GETROUTE doesn't have the necessary information to create layer 4
headers. To fix this for layer 3 hashing, set appropriate saddr/daddrs
in the skb and also change the protocol to UDP to avoid special
treatment for ICMP.

Signed-off-by: Florian Larysch <fl@n621.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'stmmac-multiple-buffers'
David S. Miller [Fri, 7 Apr 2017 14:18:28 +0000 (07:18 -0700)]
Merge branch 'stmmac-multiple-buffers'

Joao Pinto says:

====================
net: stmmac: adding multiple buffers

This patch adds multiple buffers to stmmac in a more fragmented
way, in order to make problem debug easier.

I would kindly request to people to test this patch in their HWs in
order to check if everything's functional. Thank you.
====================

Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: stmmac: adding multiple napi mechanism
Joao Pinto [Thu, 6 Apr 2017 08:49:11 +0000 (09:49 +0100)]
net: stmmac: adding multiple napi mechanism

This patch adds the napi variable to the stmmac_rx_queue
structure and forces that operations like netif_queue_stopped,
netif_wake_queue, netif_stop_queue, netdev_reset_queue and
netdev_sent_queue be made by queue.

Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Tested-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: stmmac: adding multiple buffers for TX
Joao Pinto [Thu, 6 Apr 2017 08:49:10 +0000 (09:49 +0100)]
net: stmmac: adding multiple buffers for TX

This patch adds the structure stmmac_tx_queue which contains
tx queues specific data (previously in stmmac_priv).

Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Tested-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: stmmac: adding multiple buffers for rx
Joao Pinto [Thu, 6 Apr 2017 08:49:09 +0000 (09:49 +0100)]
net: stmmac: adding multiple buffers for rx

This patch adds the structure stmmac_rx_queue which contains
rx queues specific data (previously in stmmac_priv).

Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Tested-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: stmmac: break some functions into RX and TX scopes
Joao Pinto [Thu, 6 Apr 2017 08:49:08 +0000 (09:49 +0100)]
net: stmmac: break some functions into RX and TX scopes

This patch breaks several functions into RX and TX scopes, which
will be useful when adding multiple buffers mechanism.

Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Tested-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'net_device_stats'
David S. Miller [Fri, 7 Apr 2017 14:03:35 +0000 (07:03 -0700)]
Merge branch 'net_device_stats'

Tobias Klauser says:

====================
Use net_device_stats from struct net_device

Along the lines of previous patches, switch (almost) all remaining net
drivers to use net_device_stats from net_device instead of including a
copy of it in their netdev_priv struct.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agousbnet: pegasus: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:39 +0000 (10:17 +0200)]
usbnet: pegasus: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in struct
pegasus, use stats from struct net_device. Also remove the now
unnecessary .ndo_get_stats function.

Cc: Petko Manolov <petkan@nucleusys.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agousbnet: kaweth: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:38 +0000 (10:17 +0200)]
usbnet: kaweth: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in struct
kaweth_device, use stats from struct net_device. Also remove the now
unnecessary .ndo_get_stats function.

Cc: linux-usb@vger.kernel.org
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: typhoon: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:37 +0000 (10:17 +0200)]
net: typhoon: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in struct
typhoon, use stats from struct net_device.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: tulip: de2104x: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:36 +0000 (10:17 +0200)]
net: tulip: de2104x: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in struct
de_private, use stats from struct net_device.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: sunhme: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:35 +0000 (10:17 +0200)]
net: sunhme: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in struct
happy_meal, use stats from struct net_device.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: sunbmac: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:34 +0000 (10:17 +0200)]
net: sunbmac: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in struct
bigmac, use stats from struct net_device.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: nuvoton: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:33 +0000 (10:17 +0200)]
net: nuvoton: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in
struct w90p910_ether, use stats from struct net_device. Also remove
the now unnecessary .ndo_get_stats function.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: nmlan_cs: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:32 +0000 (10:17 +0200)]
net: nmlan_cs: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in struct
_mace_private, use stats from struct net_device.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: moxa: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:31 +0000 (10:17 +0200)]
net: moxa: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in struct
moxart_mac_priv_t, use stats from struct net_device. Also remove the now
unnecessary .ndo_get_stats function.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: macb: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:30 +0000 (10:17 +0200)]
net: macb: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in struct
macb, use stats from struct net_device.

Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: emac: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:29 +0000 (10:17 +0200)]
net: emac: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in
struct emac_instance, use stats from struct net_device.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dl2k: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:28 +0000 (10:17 +0200)]
net: dl2k: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in struct
netdev_private, use stats from struct net_device. Also remove the now
unnecessary .ndo_get_stats function and the #ifdef'ed increment of the
collisions16 counter which doesn't exist in struct net_device_stats.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: cxgb3: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:27 +0000 (10:17 +0200)]
net: cxgb3: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in
struct port_info, use stats from struct net_device.

Cc: Santosh Raspatur <santosh@chelsio.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: cxgb: Use net_device_stats from struct net_device
Tobias Klauser [Fri, 7 Apr 2017 08:17:26 +0000 (10:17 +0200)]
net: cxgb: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in struct
port_info, use stats from struct net_device.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'qed-XDP-header-adjust'
David S. Miller [Fri, 7 Apr 2017 13:26:15 +0000 (06:26 -0700)]
Merge branch 'qed-XDP-header-adjust'

Yuval Mintz says:

====================
qede: support XDP head adjustments

Daniel has brought to my attention the fact that qede is the only driver
that currently supports XDP but still fails any program where
xdp_adjust_head is set on the bpf_prog. This series is meant to remedy
this and align qede with the rest of the driver, making it possible to
remove said field.

Patch #1 contains a minor cache-saving optimization for latter patches.

Patches #2 & #3 address existing issues with the qede implementation
[#2 should have been a part of this as it addresses something that's
affected by the additional headroom; #3 is simply here for the ride].

Patches #4 & #5 add the necessary logic in driver for ingress headroom,
the first adding the infrastrucutre needed for supporting the headroon
[as currently qede doesn't support such], and the second removing the
existing XDP limitation.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqede: Support XDP adjustment of headers
Mintz, Yuval [Fri, 7 Apr 2017 08:05:01 +0000 (11:05 +0300)]
qede: Support XDP adjustment of headers

In case an XDP program is attached, reserve XDP_PACKET_HEADROOM
bytes at the beginning of the packet for the program to play
with.

Modify the XDP logic in the driver to fill-in the missing bits
and re-calculate offsets and length after the program has finished
running to properly reflect the current status of the packet.

We can then go and remove the limitation of not supporting XDP programs
where xdp_adjust_head is set.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqede: Add support for ingress headroom
Mintz, Yuval [Fri, 7 Apr 2017 08:05:00 +0000 (11:05 +0300)]
qede: Add support for ingress headroom

Driver currently doesn't support any headroom; The only 'available'
space it has in the head of the buffer is due to the placement
offset.
In order to allow [later] support of XDP adjustment of headroom,
modify the the ingress flow to properly handle a scenario where
the packets would have such.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqede: Prevent VFs from using XDP
Mintz, Yuval [Fri, 7 Apr 2017 08:04:59 +0000 (11:04 +0300)]
qede: Prevent VFs from using XDP

Current implementation of VFs is very tight in regard to queue
resources. VFs support for XDP would require quite a bit of additional
infrastructure in qede and qed [sharing of queue-zones between queues,
more VF cids, mapping of the doorbell bar, etc.].

For now, prevent XDP programs from being attached to VFs.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqede: Correct XDP forward unmapping
Mintz, Yuval [Fri, 7 Apr 2017 08:04:58 +0000 (11:04 +0300)]
qede: Correct XDP forward unmapping

Driver is currently using dma_unmap_single() with the address it
passed to device for the purpose of forwarding, but the XDP
transmission buffer was originally a page allocated for the rx-queue.
The mapped address is likely to differ from the original mapped
address due to the placement offset.

This difference is going to get even bigger once we support headroom.

Cache the original mapped address of the page, and use it for unmapping
of the buffer when completion arrives for the XDP forwarded packet.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqede: Update receive statistic once per NAPI
Mintz, Yuval [Fri, 7 Apr 2017 08:04:57 +0000 (11:04 +0300)]
qede: Update receive statistic once per NAPI

Currently, each time an ingress packet is passed to networking stack
the driver increments a per-queue SW statistic.
As we want to have additional fields in the first cache-line of the
Rx-queue struct, change flow so this statistic would be updated once per
NAPI run. We will later push the statistic to a different cache line.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 's390-next'
David S. Miller [Fri, 7 Apr 2017 12:52:52 +0000 (05:52 -0700)]
Merge branch 's390-next'

Ursula Braun says:

====================
s390 patches for net-next

here are some cleanup patches for drivers/s390/net.
V2: respin, now patch "s390/qeth: improve endianness handling"
    is supposed to apply cleanly to net-next
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agos390/netiucv: improve endianness handling
Hans Wippel [Fri, 7 Apr 2017 07:15:38 +0000 (09:15 +0200)]
s390/netiucv: improve endianness handling

Replace ntohs with endianness conversion for the SKB protocol assignment
to avoid an endianness warning reported by sparse. No functional change.

Signed-off-by: Hans Wippel <hwippel@linux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agos390/ctcm: improve endianness handling
Hans Wippel [Fri, 7 Apr 2017 07:15:37 +0000 (09:15 +0200)]
s390/ctcm: improve endianness handling

Use endianness conversions for SKB protocol assignments and usage to
avoid endianness warnings reported by sparse. No functional changes.

Signed-off-by: Hans Wippel <hwippel@linux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agos390/qeth: improve endianness handling
Hans Wippel [Fri, 7 Apr 2017 07:15:36 +0000 (09:15 +0200)]
s390/qeth: improve endianness handling

Avoid endianness warnings reported by sparse by (1) using endianness
conversions for assigning and using network packet fields, and (2)
removing unnecessary endianness conversions from qeth_l3_rebuild_skb. No
functional changes.

Signed-off-by: Hans Wippel <hwippel@linux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agos390/qeth: Remove unused code
Julian Wiedmann [Fri, 7 Apr 2017 07:15:35 +0000 (09:15 +0200)]
s390/qeth: Remove unused code

1. options.add_hhlen is set but never used, drop it
2. clean up no longer required forward declarations
3. delete all sorts of unused defines

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agos390/qeth: remove unused return value
Julian Wiedmann [Fri, 7 Apr 2017 07:15:34 +0000 (09:15 +0200)]
s390/qeth: remove unused return value

qeth_qdio_output_handler() is the only caller of
qeth_handle_send_error() and doesn't care about the return value.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agos390/qeth: fix up ssqd tracing
Julian Wiedmann [Fri, 7 Apr 2017 07:15:33 +0000 (09:15 +0200)]
s390/qeth: fix up ssqd tracing

The ac fields are bitmaps, so format them as hex.
While at it, also print the ac2 field.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agos390/qeth: use QDIO_*_QFMT defines
Julian Wiedmann [Fri, 7 Apr 2017 07:15:32 +0000 (09:15 +0200)]
s390/qeth: use QDIO_*_QFMT defines

better use the constant definitions.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next...
David S. Miller [Fri, 7 Apr 2017 12:41:49 +0000 (05:41 -0700)]
Merge branch '40GbE' of git://git./linux/kernel/git/jkirsher/next-queue

Jeff Kirsher says:

====================
40GbE Intel Wired LAN Driver Updates 2017-04-06

This series contains updates to i40e and i40evf.

Preethi adds support for the outer checksum and TSO offloads for
encapsulated packets for the VF.

Mitch fixes a possible memory leak, where we need to remove the client
instance when the driver unloads.  Also we need to check to see if the
client (i40iw) is already present during probe, and add a client instance
if necessary.  Lastly, make sure we close any attached clients when the
driver is removed or shut down to prevent a kernel panic.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoi40e: close client on remove and shutdown
Mitch Williams [Thu, 30 Mar 2017 07:46:08 +0000 (00:46 -0700)]
i40e: close client on remove and shutdown

When the driver is removed or shut down, close any attached clients
(i.e. i40iw). This prevents a panic seen sometimes on forced driver
removal or system shutdown when iWarp is running.

Change-ID: I4f6161e5a73ffbb2fd5883567b007310302bfcb5
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e: register existing client on probe
Mitch Williams [Thu, 30 Mar 2017 07:46:07 +0000 (00:46 -0700)]
i40e: register existing client on probe

In some cases, a client (i40iw) may already be present when probe is
called. Check for this, and add a client instance if necessary.

Change-ID: I2009312694b7ad81f1023919e4c6c86181f21689
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e: remove client instance on driver unload
Mitch Williams [Thu, 30 Mar 2017 07:46:06 +0000 (00:46 -0700)]
i40e: remove client instance on driver unload

When the driver is unloaded, we need to remove the client instance,
otherwise we leak memory.

Change-ID: If1e7882ac1f6ce15d004722fafbe31afbe0adc9a
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoi40e/i40evf: Add capability exchange for outer checksum
Preethi Banala [Mon, 27 Mar 2017 21:43:18 +0000 (14:43 -0700)]
i40e/i40evf: Add capability exchange for outer checksum

This patch adds a capability negotiation between VF and PF using ENCAP/
ENCAP_CSUM offload flags in order for the VF to support outer checksum
and TSO offloads for encapsulated packets. These capabilities were assumed
by default and enabled in current hardware. Going forward, these features
needs to be negotiated with PF before advertising to the stack.
Additionally, strip out the mac.type checks for X722 since outer checksums
are enabled based on the ENCAP_CSUM offload negotiation flag and maintain
consistency between drivers in how the features are configured.

Change-ID: Ie380a6f57eca557a2bb575b66b12fae36d308920
Signed-off-by: Preethi Banala <preethi.banala@intel.com>
Signed-off-by: Alan Brady <alan.brady@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agoMerge branch 'ftgmac-rework-batch2-rx-path'
David S. Miller [Thu, 6 Apr 2017 22:39:47 +0000 (15:39 -0700)]
Merge branch 'ftgmac-rework-batch2-rx-path'

Benjamin Herrenschmidt says:

====================
ftgmac: Rework batch 2 - RX path

This is the second batch of updates to the ftgmac100 driver.

This one tackles the RX path of the driver, simplifying
it greatly to match common practice while significantly
increasing the performance.

(The bulk of the performance gains of my series will be
provided by the TX path improvements, notably fragmented
sends, these will be in the next batch).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoftgmac100: Work around HW bug in runt frame detection
Benjamin Herrenschmidt [Thu, 6 Apr 2017 01:02:52 +0000 (11:02 +1000)]
ftgmac100: Work around HW bug in runt frame detection

The HW incorrectly calculates the frame size without the vlan
tag and compares that against 64. It will thus flag 64-bytes
frames with a vlan tag as 60-bytes frames "runt" packets
which we'll then drop. Thus we end up dropping ARP packets
on vlan's ...

It does that whether vlan tag stripping is enabled or not.

This works around it by ignoring the "runt" error bit of the
frame has been vlan tagged and is at least 60 bytes.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoftgmac100: Remove rx descriptor accessors
Benjamin Herrenschmidt [Thu, 6 Apr 2017 01:02:51 +0000 (11:02 +1000)]
ftgmac100: Remove rx descriptor accessors

Directly access the fields when needed. The accessors add clutter
not clarity and in some cases cause unnecessary read-modify-write
type access on the slow (uncached) descriptor memory.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoftgmac100: Add missing barrier in ftgmac100_rx_packet()
Benjamin Herrenschmidt [Thu, 6 Apr 2017 01:02:50 +0000 (11:02 +1000)]
ftgmac100: Add missing barrier in ftgmac100_rx_packet()

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoftgmac100: Directly receive into sk_buffs
Benjamin Herrenschmidt [Thu, 6 Apr 2017 01:02:49 +0000 (11:02 +1000)]
ftgmac100: Directly receive into sk_buffs

The current driver receive path allocates pages and stashes
them into SKB fragments. This is not particularly useful as
we don't support jumbo frames (which wouldn't be great with
the small FIFOs on all the known implementations) anyway.

It also makes us flush the caches and allocate more memory
for RX than necessary.

So set our RX buf to our max packet size instead (which we
bump to 1536 bytes to account for packets with vlan tags
etc...) like most other ethernet drivers.

Then allocate skbs when populating the receive ring and DMA
directly into them.

This simplifies the RX path further.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoftgmac100: Simplify rx pointer handling in the rx path
Benjamin Herrenschmidt [Thu, 6 Apr 2017 01:02:48 +0000 (11:02 +1000)]
ftgmac100: Simplify rx pointer handling in the rx path

We don't handle fragmented RX packets, so the "looping"
helpers to locate the first segment of a packet or to
drop a packet aren't actually helping.

Take them out and simplify ftgmac100_rx_packet() further
as a result.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoftgmac100: Simplify rx packets error handling
Benjamin Herrenschmidt [Thu, 6 Apr 2017 01:02:47 +0000 (11:02 +1000)]
ftgmac100: Simplify rx packets error handling

The fast path has a single unlikely() test for any error bit,
calling into a helper that sets the appropriate statistics.

The various netdev_info aren't particularly interesting. If
we want to differentiate the various length errors later we
can introduce driver specific stats using ethtool.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoftgmac100: Cleanup rx checksum handling
Benjamin Herrenschmidt [Thu, 6 Apr 2017 01:02:46 +0000 (11:02 +1000)]
ftgmac100: Cleanup rx checksum handling

Read the descriptor field only once and check for IP header
checksum errors as well

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoftgmac100: Use a scratch buffer for failed RX allocations
Benjamin Herrenschmidt [Thu, 6 Apr 2017 01:02:45 +0000 (11:02 +1000)]
ftgmac100: Use a scratch buffer for failed RX allocations

We can occasionally fail to allocate new RX buffers at
runtime or when starting the driver. At the moment the
latter just fails to open which is fine but the former
leaves stale DMA pointers in the ring.

Instead, use a scratch page and have all RX ring descriptors
point to it by default unless a proper buffer can be allocated.

It will help later on when re-initializing the whole ring
at runtime on link changes since there is no clean failure
path there unlike open().

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoftgmac100: Drop support for fragmented receive
Benjamin Herrenschmidt [Thu, 6 Apr 2017 01:02:44 +0000 (11:02 +1000)]
ftgmac100: Drop support for fragmented receive

We don't support jumbo frames, we will never receive a
fragmented packet, the RX buffer is always big enough,
if not then it's a runaway packet that can be dropped.

So take out the loop that handles such things in
ftgmac100_rx_packet() which will help with subsequent
simplifications and improvements to the RX path

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoftgmac100: Move ftgmac100_alloc_rx_page() before its users
Benjamin Herrenschmidt [Thu, 6 Apr 2017 01:02:43 +0000 (11:02 +1000)]
ftgmac100: Move ftgmac100_alloc_rx_page() before its users

Avoids a forward declaration

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge tag 'batadv-next-for-davem-20170406' of git://git.open-mesh.org/linux-merge
David S. Miller [Thu, 6 Apr 2017 21:37:50 +0000 (14:37 -0700)]
Merge tag 'batadv-next-for-davem-20170406' of git://git.open-mesh.org/linux-merge

Simon Wunderlich says:

====================
This feature/cleanup patchset includes the following patches:

 - bump version strings, by Simon Wunderlich

 - Code and Style cleanups, by Sven Eckelmann (5 patches)

 - Remove an unneccessary memset, by Tobias Klauser

 - DAT and BLA optimizations for various corner cases, by Andreas Pape
   (5 patches)

 - forward/rebroadcast packet restructuring, by Linus Luessing
   (2 patches)

 - ethtool cleanup and remove unncessary code, by Sven Eckelmann
   (4 patches)

 - use net_device_stats from net_device instead of private copy,
   by Tobias Klauser
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'qed-misc-cleanups-and-fixes'
David S. Miller [Thu, 6 Apr 2017 21:26:32 +0000 (14:26 -0700)]
Merge branch 'qed-misc-cleanups-and-fixes'

Yuval Mintz says:

====================
qed: Misc cleanups and fixes

Patches #1 and #2 revolve around register access performed by driver;
The first merely adds some debug, while the second does some fixing
of incorrect PTT usage as well as preventing issues similar to those
fixed by 6f437d431930 ("qed: Don't use attention PTT for configuring BW").

Patch #3 better configures HW for architecture where cacheline isn't 64B.

Patches #4-#8 all affect iSCSI related functionaility -
adding statistics information [both to driver & management firmware],
passing information on number of resources to qedi, and simplifying
the Out-of-order implementation in SW.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqed: Make OOO archipelagos into an array
Michal Kalderon [Thu, 6 Apr 2017 12:58:35 +0000 (15:58 +0300)]
qed: Make OOO archipelagos into an array

No need to maintain the various open archipelagos as a list -
The maximal number of them is known, and we can use the CID
as key for random-access into the array.

Signed-off-by: Michal Kalderon <Michal.Kalderon@caviumc.om>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqed: Provide iSCSI statistics to management
Mintz, Yuval [Thu, 6 Apr 2017 12:58:34 +0000 (15:58 +0300)]
qed: Provide iSCSI statistics to management

Management firmware can query for some basic iSCSI-related statistics.
Provide those just as we do for other protocols.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqed: Inform qedi the number of possible CQs
Mintz, Yuval [Thu, 6 Apr 2017 12:58:33 +0000 (15:58 +0300)]
qed: Inform qedi the number of possible CQs

Now that management firmware is capable of telling us the number of CQs
available for a given PF, qed needs to communicate the number to qedi
so it would know have many to use.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqed: Add missing stat for new isles
Mintz, Yuval [Thu, 6 Apr 2017 12:58:32 +0000 (15:58 +0300)]
qed: Add missing stat for new isles

Firmware provides a statistic for the number of out-of-order isles
it used - fill it in the iscsi-related statistics.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqed: Don't close the OUT_EN during init
Mintz, Yuval [Thu, 6 Apr 2017 12:58:31 +0000 (15:58 +0300)]
qed: Don't close the OUT_EN during init

Before initializing the chip's engine, driver currently closes a set
of registers on the HW's ingress flow to prevent packets from slipping
in while they're not supposed to.

This configuration is insufficient, as there are some scenarios where
packets would still arrive even when said registers are set,
but the management firmware already closes other per-port registers
that do suffice, making this setting unnecessray.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqed: Configure cacheline size in HW
Tomer Tayar [Thu, 6 Apr 2017 12:58:30 +0000 (15:58 +0300)]
qed: Configure cacheline size in HW

Default HW configuration is optimal for an architecture where cache
line size is 64B.

During chip initialization, properly initialize the cache line size
in HW to avoid possible redundant PCI transactions.

Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqed: Don't use main-ptt in unrelated flows
Rahul Verma [Thu, 6 Apr 2017 12:58:29 +0000 (15:58 +0300)]
qed: Don't use main-ptt in unrelated flows

In order to access HW registers driver needs to acquire a PTT entry
[mapping between bar memory and internal chip address].
Since acquiring PTT entries could fail [at least in theory] as their
number is finite and other flows can hold them, we reserve special PTT
entries for 'important' enough flows - ones we want to guarantee that
would not be susceptible to such issues.

One such special entry is the 'main' PTT which is meant to be used in
flows such as chip initialization and de-initialization.
However, there are other flows that are also using that same entry
for their own purpose, and might run concurrently with the original
flows [notice that for most cases using the main-ptt by mistake, such
a race is still impossible, at least today].

This patch re-organizes the various functions that currently use the
main_ptt in one of two ways:

  - If a function shouldn't use the main_ptt it starts acquiring and
    releasing it's own PTT entry and use it instead. Notice if those
    functions previously couldn't fail, they now can [as acquisition
    might fail].

  - Change the prototypes so that the main_ptt would be received as
    a parameter [instead of explicitly accessing it].
    This prevents the future risk of adding codes that introduces new
    use-cases for flows using the main_ptt, ones that might be in race
    with the actual 'main' flows.

Signed-off-by: Rahul Verma <Rahul.Verma@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqed: Warn PTT usage by wrong hw-function
Mintz, Yuval [Thu, 6 Apr 2017 12:58:28 +0000 (15:58 +0300)]
qed: Warn PTT usage by wrong hw-function

PTT entries are per-hwfn; If some errneous flow is trying
to use a PTT belonging to a differnet hwfn warn user, as this
can break every register accessing flow later and is very hard
to root-cause.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge tag 'rxrpc-rewrite-20170406' of git://git.kernel.org/pub/scm/linux/kernel/git...
David S. Miller [Thu, 6 Apr 2017 21:22:46 +0000 (14:22 -0700)]
Merge tag 'rxrpc-rewrite-20170406' of git://git./linux/kernel/git/dhowells/linux-fs

David Howells says:

====================
rxrpc: Miscellany

Here's a set of patches that make some minor changes to AF_RXRPC:

 (1) Store error codes in struct rxrpc_call::error as negative codes and
     only convert to positive in recvmsg() to avoid confusion inside the
     kernel.

 (2) Note the result of trying to abort a call (this fails if the call is
     already 'completed').

 (3) Don't abort on temporary errors whilst processing challenge and
     response packets, but rather drop the packet and wait for
     retransmission.

And also adds some more tracing:

 (4) Protocol errors.

 (5) Received abort packets.

 (6) Changes in the Rx window size due to ACK packet information.

 (7) Client call initiation (to allow the rxrpc_call struct pointer, the
     wire call ID and the user ID/afs_call pointer to be cross-referenced).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next...
David S. Miller [Thu, 6 Apr 2017 20:53:14 +0000 (13:53 -0700)]
Merge branch '100GbE' of git://git./linux/kernel/git/jkirsher/next-queue

Jeff Kirsher says:

====================
100GbE Intel Wired LAN Driver Updates 2017-04-05

This series contains updates to fm10k only.

Phil Turnbull from Oracle fixes an issue where the argument provided to
FM10K_REMOVED macro was not what was expecting.

Jake modifies the driver to replace the bitwise operators and defines with
a BITMAP and enumeration values to avoid race conditions.  Also future
proof the driver so that developers do not have to remember to re-size the
bitmaps when adding new values.  Fixed the wording of a code comment to
avoid stating that we return a value for a void function.

Ngai-Mint makes sure that when configuring the receive ring, we make sure
the receive queue is disabled.  Fixed an issue where interfaces were
resetting because the transmit mailbox FIFO was becoming full since the
host was not ready, so ensure the host is ready before queueing up
mailbox messages.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'l2tp-auto-mtu'
David S. Miller [Thu, 6 Apr 2017 20:43:32 +0000 (13:43 -0700)]
Merge branch 'l2tp-auto-mtu'

R. Parameswaran says:

====================
L2TP:Adjust intf MTU, add underlay L3, L2 hdrs.

Existing L2TP kernel code does not derive the optimal MTU for Ethernet
pseudowires and instead leaves this to a userspace L2TP daemon or
operator. If an MTU is not specified, the existing kernel code chooses
an MTU that does not take account of all tunnel header overheads, which
can lead to unwanted IP fragmentation. When L2TP is used without a
control plane (userspace daemon), we would prefer that the kernel does a
better job of choosing a default pseudowire MTU, taking account of all
tunnel header overheads, including IP header options, if any. This patch
addresses this.

Change-set is organized as a two part patch series, with one patch
introducing a new kernel function to compute the IP overhead on a
socket, and the other patch using this new kernel function to compute
the default L2TP MTU for an Ethernet pseudowire.

Existing code also seems to assume an Ethernet (non-jumbo) underlay. The
change proposed here uses the PMTU mechanism and the dst entry in the
L2TP tunnel socket to directly pull up the underlay MTU (as the baseline
number on top of which the encapsulation headers are factored in).
An default MTU value of 1500 bytes is assumed as a fallback only if
this fails.

Fixed the kbuild test robot error in the previous posting.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoL2TP:Adjust intf MTU, add underlay L3, L2 hdrs.
R. Parameswaran [Thu, 6 Apr 2017 00:00:07 +0000 (17:00 -0700)]
L2TP:Adjust intf MTU, add underlay L3, L2 hdrs.

Existing L2TP kernel code does not derive the optimal MTU for Ethernet
pseudowires and instead leaves this to a userspace L2TP daemon or
operator. If an MTU is not specified, the existing kernel code chooses
an MTU that does not take account of all tunnel header overheads, which
can lead to unwanted IP fragmentation. When L2TP is used without a
control plane (userspace daemon), we would prefer that the kernel does a
better job of choosing a default pseudowire MTU, taking account of all
tunnel header overheads, including IP header options, if any. This patch
addresses this.

Change-set here uses the new kernel function, kernel_sock_ip_overhead(),
to factor the outer IP overhead on the L2TP tunnel socket (including
IP Options, if any) when calculating the default MTU for an Ethernet
pseudowire, along with consideration of the inner Ethernet header.

Signed-off-by: R. Parameswaran <rparames@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoNew kernel function to get IP overhead on a socket.
R. Parameswaran [Wed, 5 Apr 2017 23:50:35 +0000 (16:50 -0700)]
New kernel function to get IP overhead on a socket.

A new function, kernel_sock_ip_overhead(), is provided
to calculate the cumulative overhead imposed by the IP
Header and IP options, if any, on a socket's payload.
The new function returns an overhead of zero for sockets
that do not belong to the IPv4 or IPv6 address families.
This is used in the L2TP code path to compute the
total outer IP overhead on the L2TP tunnel socket when
calculating the default MTU for Ethernet pseudowires.

Signed-off-by: R. Parameswaran <rparames@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: ethernet: wiznet: avoid format string exposure
Kees Cook [Wed, 5 Apr 2017 21:39:35 +0000 (14:39 -0700)]
net: ethernet: wiznet: avoid format string exposure

While unlikely, this makes sure any format strings in the device name
can't exposure information via the resulting workqueue name.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqlge: avoid format string exposure in workqueue
Kees Cook [Wed, 5 Apr 2017 21:39:03 +0000 (14:39 -0700)]
qlge: avoid format string exposure in workqueue

While unlikely, this makes sure the workqueue name won't be processed
as a format string.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqed: Correct MSI-x for storage
Mintz, Yuval [Wed, 5 Apr 2017 18:20:11 +0000 (21:20 +0300)]
qed: Correct MSI-x for storage

When qedr is enabled, qed would try dividing the msi-x vectors between
L2 and RoCE, starting with L2 and providing it with sufficient vectors
for its queues.

Problem is qed would also do that for storage partitions, and as those
don't need queues it would lead qed to award those partitions with 0
msi-x vectors, causing them to believe theye're using INTa and
preventing them from operating.

Fixes: 51ff17251c9c ("qed: Add support for RoCE hw init")
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'dsa-loop-fixes'
David S. Miller [Thu, 6 Apr 2017 20:33:17 +0000 (13:33 -0700)]
Merge branch 'dsa-loop-fixes'

Florian Fainelli says:

====================
net: dsa: Mock-up driver couple fixes

Thanks to Dan's static checker, a bunch of small issues were found in the code.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: loop: Initialize err in dsa_loop_vlan_dump
Florian Fainelli [Wed, 5 Apr 2017 18:19:31 +0000 (11:19 -0700)]
net: dsa: loop: Initialize err in dsa_loop_vlan_dump

Dan's static checker reported the following:

drivers/net/dsa/dsa_loop.c:223 dsa_loop_port_vlan_dump()
error: uninitialized symbol 'err'.

which could happen if we do hit the continue statement for each iteration of
the loop. Initialize err to 0 here.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 98cd1552ea27 ("net: dsa: Mock-up driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: loop: Fix uninitialized pvid variable
Florian Fainelli [Wed, 5 Apr 2017 18:19:30 +0000 (11:19 -0700)]
net: dsa: loop: Fix uninitialized pvid variable

Dan's static analyzer reported the following:

drivers/net/dsa/dsa_loop.c:181 dsa_loop_port_vlan_del()
error: XXX uninitialized symbol 'pvid'.

we were missing the assignment of pvid to ps->vid, so add that.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 98cd1552ea27 ("net: dsa: Mock-up driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet/sched: Removed unused vlan actions definition
Or Gerlitz [Wed, 5 Apr 2017 16:09:25 +0000 (19:09 +0300)]
net/sched: Removed unused vlan actions definition

Commit c7e2b9689ef "sched: introduce vlan action" added both the
UAPI values for the vlan actions (TCA_VLAN_ACT_) and these two
in-kernel ones which are not used, remove them.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlx4: trust shinfo->gso_segs
Eric Dumazet [Wed, 5 Apr 2017 15:49:02 +0000 (08:49 -0700)]
mlx4: trust shinfo->gso_segs

mlx4 is the only driver in the tree making a point to recompute
shinfo->gso_segs.

Lets remove superfluous code.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqed: fix missing break in OOO_LB_TC case
Colin Ian King [Wed, 5 Apr 2017 12:35:44 +0000 (13:35 +0100)]
qed: fix missing break in OOO_LB_TC case

There seems to be a missing break on the OOO_LB_TC case, pq_id
is being assigned and then re-assigned on the fall through default
case and that seems suspect.

Detected by CoverityScan, CID#1424402 ("Missing break in switch")

Fixes: b5a9ee7cf3be1 ("qed: Revise QM cofiguration")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet/mlx5e: fix build error without CONFIG_SYSFS
Tobias Regnery [Wed, 5 Apr 2017 09:11:10 +0000 (11:11 +0200)]
net/mlx5e: fix build error without CONFIG_SYSFS

Commit 9008ae074885 ("net/mlx5e: Minimize mlx5e_{open/close}_locked")
copied the calls to netif_set_real_num_{tx,rx}_queues from
mlx5e_open_locked to mlx5e_activate_priv_channels and wraps them in an
if condition to test for netdev->real_num_{tx,rx}_queues.

But netdev->real_num_rx_queues is conditionally compiled in if CONFIG_SYSFS
is set. Without CONFIG_SYSFS the build fails:

drivers/net/ethernet/mellanox/mlx5/core/en_main.c: In function 'mlx5e_activate_priv_channels':
drivers/net/ethernet/mellanox/mlx5/core/en_main.c:2515:12: error: 'struct net_device' has no member named 'real_num_rx_queues'; did you mean 'real_num_tx_queues'?

Fix this by unconditionally call netif_set_real_num{tx,rx}_queues like before
commit 9008ae074885.

Fixes: 9008ae074885 ("net/mlx5e: Minimize mlx5e_{open/close}_locked")
Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoaf_unix: Use designated initializers
Kees Cook [Wed, 5 Apr 2017 05:12:09 +0000 (22:12 -0700)]
af_unix: Use designated initializers

Prepare to mark sensitive kernel structures for randomization by making
sure they're using designated initializers. These were identified during
allyesconfig builds of x86, arm, and arm64, and the initializer fixes
were extracted from grsecurity. In this case, NULL initialize with { }
instead of undesignated NULLs.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'ftgmac100-rework-batch-1-Link-and-Interrupts'
David S. Miller [Thu, 6 Apr 2017 19:38:05 +0000 (12:38 -0700)]
Merge branch 'ftgmac100-rework-batch-1-Link-and-Interrupts'

Benjamin Herrenschmidt says:

====================
ftgmac100: Rework batch 1 - Link & Interrupts

This is version 2 of the first batch of updates to the
ftgmac100 driver.

Essentially:

 - A few misc cleanups
 - Fixing link speed & duplex handling (including dealing with
   an Aspeed requirement to double reset the controller when
   the speed changes)
 - And addition of a reset task workqueue which will be used
   for delaying the re-initialization of the controller
 - Fixing a number of issues with how interrupts and NAPI
   are dealt with.

Subsequent batches will rework and improve the rx path, the
tx path, and add a bunch of features and fixes.

Version 2 addresses some review comments to patches 5 and 10
(see version history in the respective emails).
====================

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoftgmac100: Rework NAPI & interrupts handling
Benjamin Herrenschmidt [Wed, 5 Apr 2017 02:28:53 +0000 (12:28 +1000)]
ftgmac100: Rework NAPI & interrupts handling

First, don't look at the interrupt status in the poll loop
to decide what to poll. It's wrong. If we have run out of
budget, we may still have RX packets to unqueue but no more
RX interrupt pending.

So instead move the code looking at the interrupt status
into the interrupt handler where it belongs. That avoids a slow
MMIO read in the NAPI fast path. We keep the abnormal interrupts
enabled while NAPI is scheduled.

While at it, actually do something useful in the "error" cases:

On AHB bus error, trigger the new reset task, that's about all
we can do. On RX packet fifo or descriptor overflows, we need
to restart the MAC after having freed things up. So set a flag
that NAPI will see and use to perform that restart after
harvesting the RX ring.

Finally, we shouldn't complete NAPI if there are still outgoing
packets that will need harvesting. Waiting for more interrupts
is less efficient than letting NAPI run a while longer while
the queue drains.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoftgmac100: Remove useless tests in interrupt handler
Benjamin Herrenschmidt [Wed, 5 Apr 2017 02:28:52 +0000 (12:28 +1000)]
ftgmac100: Remove useless tests in interrupt handler

The interrupt is neither enabled nor registered when the interface
isn't running (regardless of whether we use nc-si or not) so the
test isn't useful.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoftgmac100: Rework MAC reset and init
Benjamin Herrenschmidt [Wed, 5 Apr 2017 02:28:51 +0000 (12:28 +1000)]
ftgmac100: Rework MAC reset and init

The HW requires a full MAC reset when changing the speed.

Additionally the Aspeed documentation spells out that the
MAC needs to be reset twice with a 10us interval.

We thus move the speed setting and top level reset code
into a new ftgmac100_reset_and_config_mac() function which
handles both. Move the ring pointers initialization there
too in order to reflect the HW change.

Also reduce the timeout for the MAC reset as it shouldn't
take more than 300 clock cycles according to the doc.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>