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4 years agonet: hns: add phy_attached_info() to the hns driver
Yonglong Liu [Sat, 17 Aug 2019 02:21:17 +0000 (10:21 +0800)]
net: hns: add phy_attached_info() to the hns driver

This patch adds the call to phy_attached_info() to the hns driver
to identify which exact PHY drivers is in use.

Suggested-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: ethernet: mediatek: Add MT7628/88 SoC support
Stefan Roese [Fri, 16 Aug 2019 13:23:25 +0000 (15:23 +0200)]
net: ethernet: mediatek: Add MT7628/88 SoC support

This patch adds support for the MediaTek MT7628/88 SoCs to the common
MediaTek ethernet driver. Some minor changes are needed for this and
a bigger change, as the MT7628 does not support QDMA (only PDMA).

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: René van Dorst <opensource@vdorst.com>
Cc: Daniel Golle <daniel@makrotopia.org>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: ethernet: mediatek: Rename NEXT_RX_DESP_IDX to NEXT_DESP_IDX
Stefan Roese [Fri, 16 Aug 2019 13:23:24 +0000 (15:23 +0200)]
net: ethernet: mediatek: Rename NEXT_RX_DESP_IDX to NEXT_DESP_IDX

Rename the NEXT_RX_DESP_IDX macro to NEXT_DESP_IDX, so that it better
can be used for TX ops as well. This will be used in the upcoming
MT7628/88 support (same functionality for RX and TX in this macro).

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: René van Dorst <opensource@vdorst.com>
Cc: Daniel Golle <daniel@makrotopia.org>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: ethernet: mediatek: Rename MTK_QMTK_INT_STATUS to MTK_QDMA_INT_STATUS
Stefan Roese [Fri, 16 Aug 2019 13:23:23 +0000 (15:23 +0200)]
net: ethernet: mediatek: Rename MTK_QMTK_INT_STATUS to MTK_QDMA_INT_STATUS

Currently all QDMA registers are named "MTK_QDMA_foo" in this driver
with one exception: MTK_QMTK_INT_STATUS. This patch renames
MTK_QMTK_INT_STATUS to MTK_QDMA_INT_STATUS so that all macros follow
this rule.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: René van Dorst <opensource@vdorst.com>
Cc: Daniel Golle <daniel@makrotopia.org>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodt-bindings: net: mediatek: Add support for MediaTek MT7628/88 SoC
Stefan Roese [Fri, 16 Aug 2019 13:23:22 +0000 (15:23 +0200)]
dt-bindings: net: mediatek: Add support for MediaTek MT7628/88 SoC

Add compatible for the ethernet IP core on MT7628/88 SoCs. Its
compatible with the older Ralink Rt5350F SoC. And OpenWrt already
uses this compatible string for the MT76x8.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: René van Dorst <opensource@vdorst.com>
Cc: Daniel Golle <daniel@makrotopia.org>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: John Crispin <john@phrozen.org>
Cc: devicetree@vger.kernel.org
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agobe2net: eliminate enable field from be_aic_obj
Ivan Vecera [Fri, 16 Aug 2019 07:15:35 +0000 (09:15 +0200)]
be2net: eliminate enable field from be_aic_obj

Adaptive coalescing is managed per adapter not per event queue so it
does not needed to store 'enable' flag for each event queue.

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agotipc: clean up skb list lock handling on send path
Jon Maloy [Thu, 15 Aug 2019 14:42:50 +0000 (16:42 +0200)]
tipc: clean up skb list lock handling on send path

The policy for handling the skb list locks on the send and receive paths
is simple.

- On the send path we never need to grab the lock on the 'xmitq' list
  when the destination is an exernal node.

- On the receive path we always need to grab the lock on the 'inputq'
  list, irrespective of source node.

However, when transmitting node local messages those will eventually
end up on the receive path of a local socket, meaning that the argument
'xmitq' in tipc_node_xmit() will become the 'ínputq' argument in  the
function tipc_sk_rcv(). This has been handled by always initializing
the spinlock of the 'xmitq' list at message creation, just in case it
may end up on the receive path later, and despite knowing that the lock
in most cases never will be used.

This approach is inaccurate and confusing, and has also concealed the
fact that the stated 'no lock grabbing' policy for the send path is
violated in some cases.

We now clean up this by never initializing the lock at message creation,
instead doing this at the moment we find that the message actually will
enter the receive path. At the same time we fix the four locations
where we incorrectly access the spinlock on the send/error path.

This patch also reverts commit d12cffe9329f ("tipc: ensure head->lock
is initialised") which has now become redundant.

CC: Eric Dumazet <edumazet@google.com>
Reported-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'hns3-next'
David S. Miller [Sun, 18 Aug 2019 19:59:13 +0000 (12:59 -0700)]
Merge branch 'hns3-next'

Huazhong Tan says:

====================
net: hns3: add some cleanups & bugfix

This patch-set includes cleanups and bugfix for the HNS3 ethernet
controller driver.

[patch 01/06 - 03/06] adds some cleanups.

[patch 04/06] changes the print level of RAS.

[patch 05/06] fixes a bug related to MAC TNL.

[patch 06/06] adds phy_attached_info().
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: hns3: add phy_attached_info() to the hns3 driver
Yonglong Liu [Fri, 16 Aug 2019 08:09:42 +0000 (16:09 +0800)]
net: hns3: add phy_attached_info() to the hns3 driver

This patch adds the call to phy_attached_info() to the hns3 driver
to identify which exact PHY drivers and models is in use.

Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: hns3: prevent unnecessary MAC TNL interrupt
Huazhong Tan [Fri, 16 Aug 2019 08:09:41 +0000 (16:09 +0800)]
net: hns3: prevent unnecessary MAC TNL interrupt

MAC TNL interrupt is used to collect statistic info about
link status changing suddenly when netdev is running.

But when stopping netdev, the enabled MAC TNL interrupt is
unnecessary, and may add some noises to the statistic info.
So this patch disables it before stopping MAC.

Fixes: a63457878b12 ("net: hns3: Add handling of MAC tunnel interruption")
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: hns3: change print level of RAS error log from warning to error
Xiaofei Tan [Fri, 16 Aug 2019 08:09:40 +0000 (16:09 +0800)]
net: hns3: change print level of RAS error log from warning to error

This patch changes print level of RAS error log from warning to error.
Because RAS error and its recovery process could cause application
failure. Also uses %u instead of %d when the parameter is unsigned.

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: Weihang Li <liweihang@hisilicon.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: hns3: fix error and incorrect format
Guojia Liao [Fri, 16 Aug 2019 08:09:39 +0000 (16:09 +0800)]
net: hns3: fix error and incorrect format

The pointer type parameter should be declare as const for preventing
from its pointed value being unexpected modified.

The uninitialized variable can not be return directly. The default
return value is 0 if no abnormal result.

This patch fixes the preceding two errors, deletes redundant
declaration of a function and align one parameter.

Signed-off-by: Guojia Liao <liaoguojia@huawei.com>
Signed-off-by: Weihang Li <liweihang@hisilicon.com>
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: hns3: modify redundant initialization of variable
Guojia Liao [Fri, 16 Aug 2019 08:09:38 +0000 (16:09 +0800)]
net: hns3: modify redundant initialization of variable

Some temporary variables do not need to be initialized that
they will be set before used, so this patch deletes the
initialization value of these temporary variables.

Signed-off-by: Guojia Liao <liaoguojia@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Huzhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: hns3: add or modify comments
Guojia Liao [Fri, 16 Aug 2019 08:09:37 +0000 (16:09 +0800)]
net: hns3: add or modify comments

To explain some code, this patch adds some comments, and modifies or
merges some comments to make them more neat.

Signed-off-by: Guojia Liao <liaoguojia@huawei.com>
Signed-off-by: Zhongzhu Liu <liuzhongzhu@huawei.com>
Signed-off-by: Weihang Li <liweihang@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'stmmac-next'
David S. Miller [Sat, 17 Aug 2019 19:43:59 +0000 (12:43 -0700)]
Merge branch 'stmmac-next'

Jose Abreu says:

====================
net: stmmac: Improvements for -next

Couple of improvements for -next tree. More info in commit logs.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: selftests: Add selftest for VLAN TX Offload
Jose Abreu [Sat, 17 Aug 2019 18:54:51 +0000 (20:54 +0200)]
net: stmmac: selftests: Add selftest for VLAN TX Offload

Add 2 new selftests for VLAN Insertion offloading. Tests are for inner
and outer VLAN offloading.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: Add support for VLAN Insertion Offload
Jose Abreu [Sat, 17 Aug 2019 18:54:50 +0000 (20:54 +0200)]
net: stmmac: Add support for VLAN Insertion Offload

Adds the logic to insert a given VLAN ID in a packet. This is offloaded
to HW and its descriptor based. For now, only XGMAC implements the
necessary callbacks.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: xgmac: Add EEE support
Jose Abreu [Sat, 17 Aug 2019 18:54:49 +0000 (20:54 +0200)]
net: stmmac: xgmac: Add EEE support

Add support for EEE in XGMAC cores by implementing the necessary
callbacks.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: selftests: Add tests for SA Insertion/Replacement
Jose Abreu [Sat, 17 Aug 2019 18:54:48 +0000 (20:54 +0200)]
net: stmmac: selftests: Add tests for SA Insertion/Replacement

Add 4 new tests:
- SA Insertion (register based)
- SA Insertion (descriptor based)
- SA Replacament (register based)
- SA Replacement (descriptor based)

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: Add support for SA Insertion/Replacement in XGMAC cores
Jose Abreu [Sat, 17 Aug 2019 18:54:47 +0000 (20:54 +0200)]
net: stmmac: Add support for SA Insertion/Replacement in XGMAC cores

Add the support for Source Address Insertion and Replacement in XGMAC
cores. Two methods are supported: Descriptor based and register based.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: Add ethtool register dump for XGMAC cores
Jose Abreu [Sat, 17 Aug 2019 18:54:46 +0000 (20:54 +0200)]
net: stmmac: Add ethtool register dump for XGMAC cores

Add the ethtool interface to dump the register map in XGMAC cores.

Changes from v2:
- Remove uneeded memset (Jakub)

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: dwxgmac: Add Flexible PPS support
Jose Abreu [Sat, 17 Aug 2019 18:54:45 +0000 (20:54 +0200)]
net: stmmac: dwxgmac: Add Flexible PPS support

Add the support for Flexible PPS in XGMAC cores.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: Add a counter for Split Header packets
Jose Abreu [Sat, 17 Aug 2019 18:54:44 +0000 (20:54 +0200)]
net: stmmac: Add a counter for Split Header packets

Add a counter that increments each time a packet with split header is
received.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: Add Split Header support and enable it in XGMAC cores
Jose Abreu [Sat, 17 Aug 2019 18:54:43 +0000 (20:54 +0200)]
net: stmmac: Add Split Header support and enable it in XGMAC cores

Add the support for Split Header feature in the RX path and enable it in
XGMAC cores.

This does not impact neither beneficts bandwidth but it does reduces CPU
usage because without the feature all the entire packet is memcpy'ed,
while that with the feature only the header is.

With Split Header disabled 'perf stat -d' gives:
86870.624945 task-clock (msec)      #    0.429 CPUs utilized
     1073352 context-switches       #    0.012 M/sec
           1 cpu-migrations         #    0.000 K/sec
         213 page-faults            #    0.002 K/sec
327113872376 cycles                 #    3.766 GHz (62.53%)
 56618161216 instructions           #    0.17  insn per cycle (75.06%)
 10742205071 branches               #  123.658 M/sec (75.36%)
   584309242 branch-misses          #    5.44% of all branches (75.19%)
 17594787965 L1-dcache-loads        #  202.540 M/sec (74.88%)
  4003773131 L1-dcache-load-misses  #   22.76% of all L1-dcache hits (74.89%)
  1313301468 LLC-loads              #   15.118 M/sec (49.75%)
   355906510 LLC-load-misses        #   27.10% of all LL-cache hits (49.92%)

With Split Header enabled 'perf stat -d' gives:
49324.456539 task-clock (msec)     #    0.245 CPUs utilized
     2542387 context-switches      #    0.052 M/sec
           1 cpu-migrations        #    0.000 K/sec
         213 page-faults           #    0.004 K/sec
177092791469 cycles                #    3.590 GHz (62.30%)
 68555756017 instructions          #    0.39  insn per cycle (75.16%)
 12697019382 branches              #  257.418 M/sec (74.81%)
   442081897 branch-misses         #    3.48% of all branches (74.79%)
 20337958358 L1-dcache-loads       #  412.330 M/sec (75.46%)
  3820210140 L1-dcache-load-misses #   18.78% of all L1-dcache hits (75.35%)
  1257719198 LLC-loads             #   25.499 M/sec (49.73%)
   685543923 LLC-load-misses       #   54.51% of all LL-cache hits (49.86%)

Changes from v2:
- Reword commit message (Jakub)
Changes from v1:
- Add performance info (David)
- Add misssing dma_sync_single_for_device()

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: xgmac: Correctly return that RX descriptor is not last one
Jose Abreu [Sat, 17 Aug 2019 18:54:42 +0000 (20:54 +0200)]
net: stmmac: xgmac: Correctly return that RX descriptor is not last one

Return the correct value when RX descriptor is not the last one.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: Prepare to add Split Header support
Jose Abreu [Sat, 17 Aug 2019 18:54:41 +0000 (20:54 +0200)]
net: stmmac: Prepare to add Split Header support

In order to add Split Header support, stmmac_rx() needs to take into
account that packet may be split accross multiple descriptors.

Refactor the logic of this function in order to support this scenario.

Changes from v2:
- Fixup if condition detection (Jakub)
- Don't stop NAPI with unfinished packet (Jakub)
- Use napi_alloc_skb() (Jakub)

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: Get correct timestamp values from XGMAC
Jose Abreu [Sat, 17 Aug 2019 18:54:40 +0000 (20:54 +0200)]
net: stmmac: Get correct timestamp values from XGMAC

TX Timestamp in XGMAC comes from MAC instead of descriptors. Implement
this in a new callback.

Also, RX Timestamp in XGMAC must be cheked against corruption and we need
a barrier to make sure that descriptor fields are read correctly.

Changes from v2:
- Rework return code check (Jakub)
Changes from v1:
- Rework the get timestamp function (David)

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'drop_monitor-for-offloaded-paths'
David S. Miller [Sat, 17 Aug 2019 19:40:09 +0000 (12:40 -0700)]
Merge branch 'drop_monitor-for-offloaded-paths'

Ido Schimmel says:

====================
Add drop monitor for offloaded data paths

Users have several ways to debug the kernel and understand why a packet
was dropped. For example, using drop monitor and perf. Both utilities
trace kfree_skb(), which is the function called when a packet is freed
as part of a failure. The information provided by these tools is
invaluable when trying to understand the cause of a packet loss.

In recent years, large portions of the kernel data path were offloaded
to capable devices. Today, it is possible to perform L2 and L3
forwarding in hardware, as well as tunneling (IP-in-IP and VXLAN).
Different TC classifiers and actions are also offloaded to capable
devices, at both ingress and egress.

However, when the data path is offloaded it is not possible to achieve
the same level of introspection since packets are dropped by the
underlying device and never reach the kernel.

This patchset aims to solve this by allowing users to monitor packets
that the underlying device decided to drop along with relevant metadata
such as the drop reason and ingress port.

The above is achieved by exposing a fundamental capability of devices
capable of data path offloading - packet trapping. In much the same way
as drop monitor registers its probe function with the kfree_skb()
tracepoint, the device is instructed to pass to the CPU (trap) packets
that it decided to drop in various places in the pipeline.

The configuration of the device to pass such packets to the CPU is
performed using devlink, as it is not specific to a port, but rather to
a device. In the future, we plan to control the policing of such packets
using devlink, in order not to overwhelm the CPU.

While devlink is used as the control path, the dropped packets are
passed along with metadata to drop monitor, which reports them to
userspace as netlink events. This allows users to use the same interface
for the monitoring of both software and hardware drops.

Logically, the solution looks as follows:

                                    Netlink event: Packet w/ metadata
                                                   Or a summary of recent drops
                                  ^
                                  |
         Userspace                |
        +---------------------------------------------------+
         Kernel                   |
                                  |
                          +-------+--------+
                          |                |
                          |  drop_monitor  |
                          |                |
                          +-------^--------+
                                  |
                                  |
                                  |
                             +----+----+
                             |         |      Kernel's Rx path
                             | devlink |      (non-drop traps)
                             |         |
                             +----^----+      ^
                                  |           |
                                  +-----------+
                                  |
                          +-------+-------+
                          |               |
                          | Device driver |
                          |               |
                          +-------^-------+
         Kernel                   |
        +---------------------------------------------------+
         Hardware                 |
                                  | Trapped packet
                                  |
                               +--+---+
                               |      |
                               | ASIC |
                               |      |
                               +------+

In order to reduce the patch count, this patchset only includes
integration with netdevsim. A follow-up patchset will add devlink-trap
support in mlxsw.

Patches #1-#7 extend drop monitor to also monitor hardware originated
drops.

Patches #8-#10 add the devlink-trap infrastructure.

Patches #11-#12 add devlink-trap support in netdevsim.

Patches #13-#16 add tests for the generic infrastructure over netdevsim.

Example
=======

Instantiate netdevsim
---------------------

List supported traps
--------------------

netdevsim/netdevsim10:
  name source_mac_is_multicast type drop generic true action drop group l2_drops
  name vlan_tag_mismatch type drop generic true action drop group l2_drops
  name ingress_vlan_filter type drop generic true action drop group l2_drops
  name ingress_spanning_tree_filter type drop generic true action drop group l2_drops
  name port_list_is_empty type drop generic true action drop group l2_drops
  name port_loopback_filter type drop generic true action drop group l2_drops
  name fid_miss type exception generic false action trap group l2_drops
  name blackhole_route type drop generic true action drop group l3_drops
  name ttl_value_is_too_small type exception generic true action trap group l3_drops
  name tail_drop type drop generic true action drop group buffer_drops

Enable a trap
-------------

Query statistics
----------------

netdevsim/netdevsim10:
  name blackhole_route type drop generic true action trap group l3_drops
    stats:
        rx:
          bytes 7384 packets 52

Monitor dropped packets
-----------------------

dropwatch> set alertmode packet
Setting alert mode
Alert mode successfully set
dropwatch> set sw true
setting software drops monitoring to 1
dropwatch> set hw true
setting hardware drops monitoring to 1
dropwatch> start
Enabling monitoring...
Kernel monitoring activated.
Issue Ctrl-C to stop monitoring
drop at: ttl_value_is_too_small (l3_drops)
origin: hardware
input port ifindex: 55
input port name: eth0
timestamp: Mon Aug 12 10:52:20 2019 445911505 nsec
protocol: 0x800
length: 142
original length: 142

drop at: ip6_mc_input+0x8b8/0xef8 (0xffffffff9e2bb0e8)
origin: software
input port ifindex: 4
timestamp: Mon Aug 12 10:53:37 2019 024444587 nsec
protocol: 0x86dd
length: 110
original length: 110

Future plans
============

* Provide more drop reasons as well as more metadata
* Add dropmon support to libpcap, so that tcpdump/tshark could
  specifically listen on dropmon traffic, instead of capturing all
  netlink packets via nlmon interface

Changes in v3:
* Place test with the rest of the netdevsim tests
* Fix test to load netdevsim module
* Move devlink helpers from the test to devlink_lib.sh. Will be used
  by mlxsw tests
* Re-order netdevsim includes in alphabetical order
* Fix reverse xmas tree in netdevsim
* Remove double include in netdevsim

Changes in v2:
* Use drop monitor to report dropped packets instead of devlink
* Add drop monitor patches
* Add test cases
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoDocumentation: Add a section for devlink-trap testing
Ido Schimmel [Sat, 17 Aug 2019 13:28:25 +0000 (16:28 +0300)]
Documentation: Add a section for devlink-trap testing

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoselftests: devlink_trap: Add test cases for devlink-trap
Ido Schimmel [Sat, 17 Aug 2019 13:28:24 +0000 (16:28 +0300)]
selftests: devlink_trap: Add test cases for devlink-trap

Add test cases for devlink-trap on top of the netdevsim implementation.

The tests focus on the devlink-trap core infrastructure and user space
API. They test both good and bad flows and also dismantle of the netdev
and devlink device used to report trapped packets.

This allows device drivers to focus their tests on device-specific
functionality.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoselftests: forwarding: devlink_lib: Add devlink-trap helpers
Ido Schimmel [Sat, 17 Aug 2019 13:28:23 +0000 (16:28 +0300)]
selftests: forwarding: devlink_lib: Add devlink-trap helpers

Add helpers to interact with devlink-trap, such as setting the action of
a trap and retrieving statistics.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoselftests: forwarding: devlink_lib: Allow tests to define devlink device
Ido Schimmel [Sat, 17 Aug 2019 13:28:22 +0000 (16:28 +0300)]
selftests: forwarding: devlink_lib: Allow tests to define devlink device

For tests that create their network interfaces dynamically or do not use
interfaces at all (as with netdevsim) it is useful to define their own
devlink device instead of deriving it from the first network interface.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoDocumentation: Add description of netdevsim traps
Ido Schimmel [Sat, 17 Aug 2019 13:28:21 +0000 (16:28 +0300)]
Documentation: Add description of netdevsim traps

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonetdevsim: Add devlink-trap support
Ido Schimmel [Sat, 17 Aug 2019 13:28:20 +0000 (16:28 +0300)]
netdevsim: Add devlink-trap support

Have netdevsim register its trap groups and traps with devlink during
initialization and periodically report trapped packets to devlink core.

Since netdevsim is not a real device, the trapped packets are emulated
using a workqueue that periodically reports a UDP packet with a random
5-tuple from each active packet trap and from each running netdev.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoDocumentation: Add devlink-trap documentation
Ido Schimmel [Sat, 17 Aug 2019 13:28:19 +0000 (16:28 +0300)]
Documentation: Add devlink-trap documentation

Add initial documentation of the devlink-trap mechanism, explaining the
background, motivation and the semantics of the interface.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: Add generic packet traps and groups
Ido Schimmel [Sat, 17 Aug 2019 13:28:18 +0000 (16:28 +0300)]
devlink: Add generic packet traps and groups

Add generic packet traps and groups that can report dropped packets as
well as exceptions such as TTL error.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: Add packet trap infrastructure
Ido Schimmel [Sat, 17 Aug 2019 13:28:17 +0000 (16:28 +0300)]
devlink: Add packet trap infrastructure

Add the basic packet trap infrastructure that allows device drivers to
register their supported packet traps and trap groups with devlink.

Each driver is expected to provide basic information about each
supported trap, such as name and ID, but also the supported metadata
types that will accompany each packet trapped via the trap. The
currently supported metadata type is just the input port, but more will
be added in the future. For example, output port and traffic class.

Trap groups allow users to set the action of all member traps. In
addition, users can retrieve per-group statistics in case per-trap
statistics are too narrow. In the future, the trap group object can be
extended with more attributes, such as policer settings which will limit
the amount of traffic generated by member traps towards the CPU.

Beside registering their packet traps with devlink, drivers are also
expected to report trapped packets to devlink along with relevant
metadata. devlink will maintain packets and bytes statistics for each
packet trap and will potentially report the trapped packet with its
metadata to user space via drop monitor netlink channel.

The interface towards the drivers is simple and allows devlink to set
the action of the trap. Currently, only two actions are supported:
'trap' and 'drop'. When set to 'trap', the device is expected to provide
the sole copy of the packet to the driver which will pass it to devlink.
When set to 'drop', the device is expected to drop the packet and not
send a copy to the driver. In the future, more actions can be added,
such as 'mirror'.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodrop_monitor: Allow user to start monitoring hardware drops
Ido Schimmel [Sat, 17 Aug 2019 13:28:16 +0000 (16:28 +0300)]
drop_monitor: Allow user to start monitoring hardware drops

Drop monitor has start and stop commands, but so far these were only
used to start and stop monitoring of software drops.

Now that drop monitor can also monitor hardware drops, we should allow
the user to control these as well.

Do that by adding SW and HW flags to these commands. If no flag is
specified, then only start / stop monitoring software drops. This is
done in order to maintain backward-compatibility with existing user
space applications.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodrop_monitor: Add support for summary alert mode for hardware drops
Ido Schimmel [Sat, 17 Aug 2019 13:28:15 +0000 (16:28 +0300)]
drop_monitor: Add support for summary alert mode for hardware drops

In summary alert mode a notification is sent with a list of recent drop
reasons and a count of how many packets were dropped due to this reason.

To avoid expensive operations in the context in which packets are
dropped, each CPU holds an array whose number of entries is the maximum
number of drop reasons that can be encoded in the netlink notification.
Each entry stores the drop reason and a count. When a packet is dropped
the array is traversed and a new entry is created or the count of an
existing entry is incremented.

Later, in process context, the array is replaced with a newly allocated
copy and the old array is encoded in a netlink notification. To avoid
breaking user space, the notification includes the ancillary header,
which is 'struct net_dm_alert_msg' with number of entries set to '0'.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodrop_monitor: Add support for packet alert mode for hardware drops
Ido Schimmel [Sat, 17 Aug 2019 13:28:14 +0000 (16:28 +0300)]
drop_monitor: Add support for packet alert mode for hardware drops

In a similar fashion to software drops, extend drop monitor to send
netlink events when packets are dropped by the underlying hardware.

The main difference is that instead of encoding the program counter (PC)
from which kfree_skb() was called in the netlink message, we encode the
hardware trap name. The two are mostly equivalent since they should both
help the user understand why the packet was dropped.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodrop_monitor: Consider all monitoring states before performing configuration
Ido Schimmel [Sat, 17 Aug 2019 13:28:13 +0000 (16:28 +0300)]
drop_monitor: Consider all monitoring states before performing configuration

The drop monitor configuration (e.g., alert mode) is global, but user
will be able to enable monitoring of only software or hardware drops.

Therefore, ensure that monitoring of both software and hardware drops are
disabled before allowing drop monitor configuration to take place.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodrop_monitor: Add basic infrastructure for hardware drops
Ido Schimmel [Sat, 17 Aug 2019 13:28:12 +0000 (16:28 +0300)]
drop_monitor: Add basic infrastructure for hardware drops

Export a function that can be invoked in order to report packets that
were dropped by the underlying hardware along with metadata.

Subsequent patches will add support for the different alert modes.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodrop_monitor: Initialize hardware per-CPU data
Ido Schimmel [Sat, 17 Aug 2019 13:28:11 +0000 (16:28 +0300)]
drop_monitor: Initialize hardware per-CPU data

Like software drops, hardware drops also need the same type of per-CPU
data. Therefore, initialize it during module initialization and
de-initialize it during module exit.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodrop_monitor: Move per-CPU data init/fini to separate functions
Ido Schimmel [Sat, 17 Aug 2019 13:28:10 +0000 (16:28 +0300)]
drop_monitor: Move per-CPU data init/fini to separate functions

Currently drop monitor only reports software drops to user space, but
subsequent patches are going to add support for hardware drops.

Like software drops, the per-CPU data of hardware drops needs to be
initialized and de-initialized upon module initialization and exit. To
avoid code duplication, break this code into separate functions, so that
these could be re-used for hardware drops.

No functional changes intended.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'bridge-mdb'
David S. Miller [Sat, 17 Aug 2019 19:36:57 +0000 (12:36 -0700)]
Merge branch 'bridge-mdb'

Nikolay Aleksandrov says:

====================
net: bridge: mdb: allow dump/add/del of host-joined entries

This set makes the bridge dump host-joined mdb entries, they should be
treated as normal entries since they take a slot and are aging out.
We already have notifications for them but we couldn't dump them until
now so they remained hidden. We dump them similar to how they're
notified, in order to keep user-space compatibility with the dumped
objects (e.g. iproute2 dumps mdbs in a format which can be fed into
add/del commands) we allow host-joined groups also to be added/deleted via
mdb commands. That can later be used for L2 mcast MAC manipulation as
was recently discussed. Note that iproute2 changes are not necessary,
this set will work with the current user-space mdb code.

Patch 01 - a trivial comment move
Patch 02 - factors out the mdb filling code so it can be
           re-used for the host-joined entries
Patch 03 - dumps host-joined entries
Patch 04 - allows manipulation of host-joined entries via standard mdb
           calls

v3: fix compiler warning in patch 04 (DaveM)
v2: change patch 04 to avoid double notification and improve host group
    manual removal if no ports are present in the group
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: bridge: mdb: allow add/delete for host-joined groups
Nikolay Aleksandrov [Sat, 17 Aug 2019 11:22:13 +0000 (14:22 +0300)]
net: bridge: mdb: allow add/delete for host-joined groups

Currently this is needed only for user-space compatibility, so similar
object adds/deletes as the dumped ones would succeed. Later it can be
used for L2 mcast MAC add/delete.

v3: fix compiler warning (DaveM)
v2: don't send a notification when used from user-space, arm the group
    timer if no ports are left after host entry del

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: bridge: mdb: dump host-joined entries as well
Nikolay Aleksandrov [Sat, 17 Aug 2019 11:22:12 +0000 (14:22 +0300)]
net: bridge: mdb: dump host-joined entries as well

Currently we dump only the port mdb entries but we can have host-joined
entries on the bridge itself and they should be treated as normal temp
mdbs, they're already notified:
$ bridge monitor all
[MDB]dev br0 port br0 grp ff02::8 temp

The group will not be shown in the bridge mdb output, but it takes 1 slot
and it's timing out. If it's only host-joined then the mdb show output
can even be empty.

After this patch we show the host-joined groups:
$ bridge mdb show
dev br0 port br0 grp ff02::8 temp

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: bridge: mdb: factor out mdb filling
Nikolay Aleksandrov [Sat, 17 Aug 2019 11:22:11 +0000 (14:22 +0300)]
net: bridge: mdb: factor out mdb filling

We have to factor out the mdb fill portion in order to re-use it later for
the bridge mdb entries. No functional changes intended.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: bridge: mdb: move vlan comments
Nikolay Aleksandrov [Sat, 17 Aug 2019 11:22:10 +0000 (14:22 +0300)]
net: bridge: mdb: move vlan comments

Trivial patch to move the vlan comments in their proper places above the
vid 0 checks.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'net-phy-remove-genphy_config_init'
David S. Miller [Sat, 17 Aug 2019 19:34:50 +0000 (12:34 -0700)]
Merge branch 'net-phy-remove-genphy_config_init'

Heiner Kallweit says:

====================
net: phy: remove genphy_config_init

Supported PHY features are either auto-detected or explicitly set.
In both cases calling genphy_config_init isn't needed. All that
genphy_config_init does is removing features that are set as
supported but can't be auto-detected. Basically it duplicates the
code in genphy_read_abilities. Therefore remove genphy_config_init.

v2:
- remove call also from new adin driver
v3:
- pass NULL as config_init function pointer for dp83848
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: remove genphy_config_init
Heiner Kallweit [Sat, 17 Aug 2019 10:30:39 +0000 (12:30 +0200)]
net: phy: remove genphy_config_init

Now that all users have been removed we can remove genphy_config_init.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa: remove calls to genphy_config_init
Heiner Kallweit [Sat, 17 Aug 2019 10:29:54 +0000 (12:29 +0200)]
net: dsa: remove calls to genphy_config_init

Supported PHY features are either auto-detected or explicitly set.
In both cases calling genphy_config_init isn't needed.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: remove calls to genphy_config_init
Heiner Kallweit [Sat, 17 Aug 2019 10:29:25 +0000 (12:29 +0200)]
net: phy: remove calls to genphy_config_init

Supported PHY features are either auto-detected or explicitly set.
In both cases calling genphy_config_init isn't needed. All that
genphy_config_init does is removing features that are set as
supported but can't be auto-detected. Basically it duplicates the
code in genphy_read_abilities. Therefore remove such calls from
all PHY drivers.

v2:
- remove call also from new adin PHY driver
v3:
- pass NULL as config_init function pointer for dp83848

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoipvlan: set hw_enc_features like macvlan
Bill Sommerfeld [Thu, 15 Aug 2019 00:10:43 +0000 (17:10 -0700)]
ipvlan: set hw_enc_features like macvlan

Allow encapsulated packets sent to tunnels layered over ipvlan to use
offloads rather than forcing SW fallbacks.

Since commit f21e5077010acda73a60 ("macvlan: add offload features for
encapsulation"), macvlan has set dev->hw_enc_features to include
everything in dev->features; do likewise in ipvlan.

Signed-off-by: Bill Sommerfeld <wsommerfeld@google.com>
Acked-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoselftests: Fix get_ifidx and callers in nettest.c
David Ahern [Wed, 14 Aug 2019 17:11:51 +0000 (10:11 -0700)]
selftests: Fix get_ifidx and callers in nettest.c

Dan reported:

    The patch acda655fefae: "selftests: Add nettest" from Aug 1, 2019,
    leads to the following static checker warning:

            ./tools/testing/selftests/net/nettest.c:1690 main()
            warn: unsigned 'tmp' is never less than zero.

    ./tools/testing/selftests/net/nettest.c
      1680                  case '1':
      1681                          args.has_expected_raddr = 1;
      1682                          if (convert_addr(&args, optarg,
      1683                                           ADDR_TYPE_EXPECTED_REMOTE))
      1684                                  return 1;
      1685
      1686                          break;
      1687                  case '2':
      1688                          if (str_to_uint(optarg, 0, 0x7ffffff, &tmp) != 0) {
      1689                                  tmp = get_ifidx(optarg);
      1690                                  if (tmp < 0) {

    "tmp" is unsigned so it can't be negative.  Also all the callers assume
    that get_ifidx() returns negatives on error but it looks like it really
    returns zero on error so it's a bit unclear to me.

Update get_ifidx to return -1 on errors and cleanup callers of it.

Fixes: acda655fefae ("selftests: Add nettest")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa: mv88e6xxx: check for mode change in port_setup_mac
Marek Behún [Wed, 14 Aug 2019 14:40:24 +0000 (16:40 +0200)]
net: dsa: mv88e6xxx: check for mode change in port_setup_mac

The mv88e6xxx_port_setup_mac checks if the requested MAC settings are
different from the current ones, and if not, does nothing (since chaning
them requires putting the link down).

In this check it only looks if the triplet [link, speed, duplex] is
being changed.

This patch adds support to also check if the mode parameter (of type
phy_interface_t) is requested to be changed. The current mode is
computed by the ->port_link_state() method, and if it is different from
PHY_INTERFACE_MODE_NA, we check for equality with the requested mode.

In the implementations of the mv88e6250_port_link_state() method we set
the current mode to PHY_INTERFACE_MODE_NA - so the code does not check
for mode change on 6250.

In the mv88e6352_port_link_state() method, we use the cached cmode of
the port to determine the mode as phy_interface_t (and if it is not
enough, eg. for RGMII, we also look at the port control register for
RX/TX timings).

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'net-phy-adin-add-support-for-Analog-Devices-PHYs'
David S. Miller [Fri, 16 Aug 2019 18:56:26 +0000 (11:56 -0700)]
Merge branch 'net-phy-adin-add-support-for-Analog-Devices-PHYs'

Alexandru Ardelean says:

====================
net: phy: adin: add support for Analog Devices PHYs

This changeset adds support for Analog Devices Industrial Ethernet PHYs.
Particularly the PHYs this driver adds support for:
 * ADIN1200 - Robust, Industrial, Low Power 10/100 Ethernet PHY
 * ADIN1300 - Robust, Industrial, Low Latency 10/100/1000 Gigabit
   Ethernet PHY

The 2 chips are register compatible with one another. The main
difference being that ADIN1200 doesn't operate in gigabit mode.

The chips can be operated by the Generic PHY driver as well via the
standard IEEE PHY registers (0x0000 - 0x000F) which are supported by the
kernel as well. This assumes that configuration of the PHY has been done
completely in HW, according to spec, i.e. no extra SW configuration
required.

This changeset also implements the ability to configure the chips via SW
registers.

Datasheets:
  https://www.analog.com/media/en/technical-documentation/data-sheets/ADIN1300.pdf
  https://www.analog.com/media/en/technical-documentation/data-sheets/ADIN1200.pdf
====================

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodt-bindings: net: add bindings for ADIN PHY driver
Alexandru Ardelean [Fri, 16 Aug 2019 13:10:11 +0000 (16:10 +0300)]
dt-bindings: net: add bindings for ADIN PHY driver

This change adds bindings for the Analog Devices ADIN PHY driver, detailing
all the properties implemented by the driver.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: adin: add ethtool get_stats support
Alexandru Ardelean [Fri, 16 Aug 2019 13:10:10 +0000 (16:10 +0300)]
net: phy: adin: add ethtool get_stats support

This change implements retrieving all the error counters from the PHY.

The counters require that the RxErrCnt register (0x0014) be read first,
after which copies of the counters are latched into the registers. This
ensures that all registers read after RxErrCnt are synchronized at the
moment that they are read.

The counter values need to be accumulated by the driver, as each time that
RxErrCnt is read, the values that are latched are the ones that have
incremented from the last read.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: adin: implement downshift configuration via phy-tunable
Alexandru Ardelean [Fri, 16 Aug 2019 13:10:09 +0000 (16:10 +0300)]
net: phy: adin: implement downshift configuration via phy-tunable

Down-speed auto-negotiation may not always be enabled, in which case the
PHY won't down-shift to 100 or 10 during auto-negotiation.

This change enables downshift and configures the number of retries to
default 4 (which is also in the datasheet

The downshift control mechanism can also be controlled via the phy-tunable
interface (ETHTOOL_PHY_DOWNSHIFT control).

The change has been adapted from the Aquantia PHY driver.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: adin: implement PHY subsystem software reset
Alexandru Ardelean [Fri, 16 Aug 2019 13:10:08 +0000 (16:10 +0300)]
net: phy: adin: implement PHY subsystem software reset

The ADIN PHYs supports 4 types of reset:
1. The standard PHY reset via BMCR_RESET bit in MII_BMCR reg
2. Reset via GPIO
3. Reset via reg GeSftRst (0xff0c) & reload previous pin configs
4. Reset via reg GeSftRst (0xff0c) & request new pin configs

Resets 2, 3 & 4 are almost identical, with the exception that the crystal
oscillator is available during reset for 2.

This change implements subsystem software reset via the GeSftRst and
reloading the previous pin configuration (so reset number 3).
This will also reset the PHY core regs (similar to reset 1).

Since writing bit 1 to reg GeSftRst is self-clearing, the only thing that
can be done, is to write to that register, wait a specific amount of time
(10 milliseconds should be enough) and try to read back and check if there
are no errors on read. A busy-wait-read won't work well, and may sometimes
work or not work.

In case phylib is configured to also do a reset via GPIO, the ADIN PHY may
be reset twice when the PHY device registers, but that isn't a problem,
since it's being done on boot (or PHY device register).

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: adin: add EEE translation layer from Clause 45 to Clause 22
Alexandru Ardelean [Fri, 16 Aug 2019 13:10:07 +0000 (16:10 +0300)]
net: phy: adin: add EEE translation layer from Clause 45 to Clause 22

The ADIN1200 & ADIN1300 PHYs support EEE by using standard Clause 45 access
to access MMD registers for EEE.

The EEE register addresses (when using Clause 22) are available at
different addresses (than Clause 45), and since accessing these regs (via
Clause 22) needs a special mechanism, a translation table is required to
convert these addresses.

For Clause 45, this is not needed since the driver will likely never use
this access mode.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: adin: add support MDI/MDIX/Auto-MDI selection
Alexandru Ardelean [Fri, 16 Aug 2019 13:10:06 +0000 (16:10 +0300)]
net: phy: adin: add support MDI/MDIX/Auto-MDI selection

The ADIN PHYs support automatic MDI/MDIX negotiation. By default this is
disabled, so this is enabled at `config_init`.

This is controlled via the PHY Control 1 register.
The supported modes are:
  1. Manual MDI
  2. Manual MDIX
  3. Auto MDIX - prefer MDIX
  4. Auto MDIX - prefer MDI

The phydev mdix & mdix_ctrl fields include modes 3 & 4 into a single
auto-mode. So, the default mode this driver enables is 4 when Auto-MDI mode
is used.

When detecting MDI/MDIX mode, a combination of the PHY Control 1 register
and PHY Status 1 register is used to determine the correct MDI/MDIX mode.

If Auto-MDI mode is not set, then the manual MDI/MDIX mode is returned.
If Auto-MDI mode is set, then MDIX mode is returned differs from the
preferred MDI/MDIX mode.
This covers all cases where:
  1. MDI preferred  & Pair01Swapped   == MDIX
  2. MDIX preferred & Pair01Swapped   == MDI
  3. MDI preferred  & ! Pair01Swapped == MDIX
  4. MDIX preferred & ! Pair01Swapped == MDI

The preferred MDI/MDIX mode is not configured via SW, but can be configured
via HW pins. Note that the `Pair01Swapped` is the Green-Yellow physical
pairs.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: adin: make RMII fifo depth configurable
Alexandru Ardelean [Fri, 16 Aug 2019 13:10:05 +0000 (16:10 +0300)]
net: phy: adin: make RMII fifo depth configurable

The FIFO depth can be configured for the RMII mode. This change adds
support for doing this via device-tree (or ACPI).

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: adin: make RGMII internal delays configurable
Alexandru Ardelean [Fri, 16 Aug 2019 13:10:04 +0000 (16:10 +0300)]
net: phy: adin: make RGMII internal delays configurable

The internal delays for the RGMII are configurable for both RX & TX. This
change adds support for configuring them via device-tree (or ACPI).

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: adin: configure RGMII/RMII/MII modes on config
Alexandru Ardelean [Fri, 16 Aug 2019 13:10:03 +0000 (16:10 +0300)]
net: phy: adin: configure RGMII/RMII/MII modes on config

The ADIN1300 chip supports RGMII, RMII & MII modes. Default (if
unconfigured) is RGMII.
This change adds support for configuring these modes via the device
registers.

For RGMII with internal delays (modes RGMII_ID,RGMII_TXID, RGMII_RXID),
the default delay is 2 ns. This can be configurable and will be done in
a subsequent change.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: adin: add {write,read}_mmd hooks
Alexandru Ardelean [Fri, 16 Aug 2019 13:10:02 +0000 (16:10 +0300)]
net: phy: adin: add {write,read}_mmd hooks

Both ADIN1200 & ADIN1300 support Clause 45 access for some registers.
The Extended Management Interface (EMI) registers are accessible via both
Clause 45 (at register MDIO_MMD_VEND1) and using Clause 22.

The Clause 22 access for MMD regs differs from the standard one defined by
802.3. The ADIN PHYs  use registers ExtRegPtr (0x0010) and ExtRegData
(0x0011) to access Clause 45 & EMI registers.

The indirect access is done via the following mechanism (for both R/W):
1. Write the address of the register in the ExtRegPtr
2. Read/write the value of the register via reg ExtRegData

This mechanism is needed to manage configuration of chip settings and to
access EEE registers via Clause 22.

Since Clause 45 access will likely never be used, it is not implemented via
this hook.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: adin: add support for interrupts
Alexandru Ardelean [Fri, 16 Aug 2019 13:10:01 +0000 (16:10 +0300)]
net: phy: adin: add support for interrupts

This change hooks link-status-change interrupts to phylib.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: adin: hook genphy_{suspend, resume} into the driver
Alexandru Ardelean [Fri, 16 Aug 2019 13:10:00 +0000 (16:10 +0300)]
net: phy: adin: hook genphy_{suspend, resume} into the driver

The chip supports standard suspend/resume via BMCR reg.
Hook these functions into the `adin` driver.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: adin: add support for Analog Devices PHYs
Alexandru Ardelean [Fri, 16 Aug 2019 13:09:59 +0000 (16:09 +0300)]
net: phy: adin: add support for Analog Devices PHYs

This change adds support for Analog Devices Industrial Ethernet PHYs.
Particularly the PHYs this driver adds support for:
 * ADIN1200 - Robust, Industrial, Low Power 10/100 Ethernet PHY
 * ADIN1300 - Robust, Industrial, Low Latency 10/100/1000 Gigabit
   Ethernet PHY

The 2 chips are register compatible with one another. The main difference
being that ADIN1200 doesn't operate in gigabit mode.

The chips can be operated by the Generic PHY driver as well via the
standard IEEE PHY registers (0x0000 - 0x000F) which are supported by the
kernel as well. This assumes that configuration of the PHY has been done
completely in HW, according to spec.

Configuration can also be done via registers, which will be supported by
this driver.

Datasheets:
  https://www.analog.com/media/en/technical-documentation/data-sheets/ADIN1300.pdf
  https://www.analog.com/media/en/technical-documentation/data-sheets/ADIN1200.pdf

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'mscc-PTP-support'
David S. Miller [Thu, 15 Aug 2019 23:31:12 +0000 (16:31 -0700)]
Merge branch 'mscc-PTP-support'

Antoine Tenart says:

====================
net: mscc: PTP Hardware Clock (PHC) support

This series introduces the PTP Hardware Clock (PHC) support to the Mscc
Ocelot switch driver. In order to make use of this, a new register bank
is added and described in the device tree, as well as a new interrupt.
The use this bank and interrupt was made optional in the driver for dt
compatibility reasons.

Thanks!
Antoine

Since v5:
  - Made sure both the PTP interrupt and register bank were available to
    enable supporting h/w timestamping.
  - Added a check after a kzalloc.
  - Add Reviewed-by tags from Andrew.

Since v4:
  - Added SKBTX_IN_PROGRESS.
  - Fixed two xmas trees.
  - Rework the loop condition in ocelot_ptp_rdy_irq_handler.

Since v3:
  - Fixed a spin_unlock_irqrestore issue.

Since v2:
  - Prevented from a possible infinite loop when reading the h/w
    timestamps.
  - s/GFP_KERNEL/GFP_ATOMIC/ in the Tx path.
  - Set rx_filter to HWTSTAMP_FILTER_PTP_V2_EVENT at probe.
  - Fixed s/w timestamping dependencies.
  - Added Paul Burton's Acked-by on patches 2 and 4.

Since v1:
  - Used list_for_each_safe() in ocelot_deinit().
  - Fixed a memory leak in ocelot_deinit() by calling
    dev_kfree_skb_any().
  - Fixed a locking issue in get_hwtimestamp().
  - Handled the NULL case of ptp_clock_register().
  - Added comments on optional dt properties.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: mscc: PTP Hardware Clock (PHC) support
Antoine Tenart [Mon, 12 Aug 2019 14:45:37 +0000 (16:45 +0200)]
net: mscc: PTP Hardware Clock (PHC) support

This patch adds support for PTP Hardware Clock (PHC) to the Ocelot
switch for both PTP 1-step and 2-step modes.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: mscc: remove the frame_info cpuq member
Antoine Tenart [Mon, 12 Aug 2019 14:45:36 +0000 (16:45 +0200)]
net: mscc: remove the frame_info cpuq member

In struct frame_info, the cpuq member is never used. This cosmetic patch
removes it from the structure, and from the parsing of the frame header
as it's only set but never used.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: mscc: improve the frame header parsing readability
Antoine Tenart [Mon, 12 Aug 2019 14:45:35 +0000 (16:45 +0200)]
net: mscc: improve the frame header parsing readability

This cosmetic patch improves the frame header parsing readability by
introducing a new macro to access and mask its fields.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: mscc: describe the PTP register range
Antoine Tenart [Mon, 12 Aug 2019 14:45:34 +0000 (16:45 +0200)]
net: mscc: describe the PTP register range

This patch adds support for using the PTP register range, and adds a
description of its registers. This bank is used when configuring PTP.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoDocumentation/bindings: net: ocelot: document the PTP ready IRQ
Antoine Tenart [Mon, 12 Aug 2019 14:45:33 +0000 (16:45 +0200)]
Documentation/bindings: net: ocelot: document the PTP ready IRQ

One additional interrupt needs to be described within the Ocelot device
tree node: the PTP ready one. This patch documents the binding needed to
do so.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoDocumentation/bindings: net: ocelot: document the PTP bank
Antoine Tenart [Mon, 12 Aug 2019 14:45:32 +0000 (16:45 +0200)]
Documentation/bindings: net: ocelot: document the PTP bank

One additional register range needs to be described within the Ocelot
device tree node: the PTP. This patch documents the binding needed to do
so.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'qed-NVM'
David S. Miller [Thu, 15 Aug 2019 19:54:45 +0000 (12:54 -0700)]
Merge branch 'qed-NVM'

Sudarsana Reddy Kalluru says:

====================
qed*: Support for NVM config attributes.

The patch series adds support for managing the NVM config attributes.
Patch (1) adds functionality to update config attributes via MFW.
Patch (2) adds driver interface for updating the config attributes.

Changes from previous versions:
-------------------------------
v4: Added more details on the functionality and its usage.
v3: Removed unused variable.
v2: Removed unused API.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoqed: Add driver API for flashing the config attributes.
Sudarsana Reddy Kalluru [Wed, 14 Aug 2019 08:11:53 +0000 (01:11 -0700)]
qed: Add driver API for flashing the config attributes.

The patch adds driver interface for reading the config attributes from user
provided buffer, and updates these values on nvm config flash partition.

This is basically an expansion of our existing ethtool -f implementation.
The management FW has exposed an additional method of configuring some of
the nvram options, and this makes use of that. This implementation will
come into use when newer FW files which contain configuration directives
employing this API will be provided to ethtool -f.

Signed-off-by: Sudarsana Reddy Kalluru <skalluru@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoqed: Add API for configuring NVM attributes.
Sudarsana Reddy Kalluru [Wed, 14 Aug 2019 08:11:52 +0000 (01:11 -0700)]
qed: Add API for configuring NVM attributes.

The patch adds API for configuring the NVM config attributes using
Management FW (MFW) interfaces.

Signed-off-by: Sudarsana Reddy Kalluru <skalluru@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge tag 'linux-can-next-for-5.4-20190814' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Thu, 15 Aug 2019 19:43:22 +0000 (12:43 -0700)]
Merge tag 'linux-can-next-for-5.4-20190814' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2019-08-14

this is a pull request for net-next/master consisting of 41 patches.

The first two patches are for the kvaser_pciefd driver: Christer Beskow
removes unnecessary code in the kvaser_pciefd_pwm_stop() function,
YueHaibing removes the unused including of <linux/version.h>.

In the next patch YueHaibing also removes the unused including of
<linux/version.h> in the f81601 driver.

In the ti_hecc driver the next 6 patches are by me and fix checkpatch
warnings. YueHaibing's patch removes an unused variable in the
ti_hecc_mailbox_read() function.

The next 6 patches all target the xilinx_can driver. Anssi Hannula's
patch fixes a chip start failure with an invalid bus. The patch by
Venkatesh Yadav Abbarapu skips an error message in case of a deferred
probe. The 3 patches by Appana Durga Kedareswara rao fix the RX and TX
path for CAN-FD frames. Srinivas Neeli's patch fixes the bit timing
calculations for CAN-FD.

The next 12 patches are by me and several checkpatch warnings in the
af_can, raw and bcm components.

Thomas Gleixner provides a patch for the bcm, which switches the timer
to HRTIMER_MODE_SOFT and removes the hrtimer_tasklet.

Then 6 more patches by me for the gw component, which fix checkpatch
warnings, followed by 2 patches by Oliver Hartkopp to add CAN-FD
support.

The vcan driver gets 3 patches by me, fixing checkpatch warnings.

And finally a patch by Andre Hartmann to fix typos in CAN's netlink
header.
====================

4 years agopage_pool: fix logic in __page_pool_get_cached
Jonathan Lemon [Tue, 13 Aug 2019 17:45:09 +0000 (10:45 -0700)]
page_pool: fix logic in __page_pool_get_cached

__page_pool_get_cached() will return NULL when the ring is
empty, even if there are pages present in the lookaside cache.

It is also possible to refill the cache, and then return a
NULL page.

Restructure the logic so eliminate both cases.

Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'rds-next'
David S. Miller [Thu, 15 Aug 2019 19:04:24 +0000 (12:04 -0700)]
Merge branch 'rds-next'

Gerd Rausch says:

====================
net/rds: Fixes from internal Oracle repo

This is the first set of (mostly old) patches from our internal repository
in an effort to synchronize what Oracle had been using internally
with what is shipped with the Linux kernel.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agords: check for excessive looping in rds_send_xmit
Andy Grover [Thu, 13 Jan 2011 19:40:31 +0000 (11:40 -0800)]
rds: check for excessive looping in rds_send_xmit

Original commit from 2011 updated to include a change by
Yuval Shaia <yuval.shaia@oracle.com>
that adds a new statistic counter "send_stuck_rm"
to capture the messages looping exessively
in the send path.

Signed-off-by: Gerd Rausch <gerd.rausch@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/rds: Add a few missing rds_stat_names entries
Gerd Rausch [Thu, 11 Jul 2019 19:15:50 +0000 (12:15 -0700)]
net/rds: Add a few missing rds_stat_names entries

In a previous commit, fields were added to "struct rds_statistics"
but array "rds_stat_names" was not updated accordingly.

Please note the inconsistent naming of the string representations
that is done in the name of compatibility
with the Oracle internal code-base.

s_recv_bytes_added_to_socket     -> "recv_bytes_added_to_sock"
s_recv_bytes_removed_from_socket -> "recv_bytes_freed_fromsock"

Fixes: 192a798f5299 ("RDS: add stat for socket recv memory usage")
Signed-off-by: Gerd Rausch <gerd.rausch@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoRDS: don't use GFP_ATOMIC for sk_alloc in rds_create
Chris Mason [Fri, 3 Feb 2012 16:08:51 +0000 (11:08 -0500)]
RDS: don't use GFP_ATOMIC for sk_alloc in rds_create

Signed-off-by: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Bang Nguyen <bang.nguyen@oracle.com>
Signed-off-by: Gerd Rausch <gerd.rausch@oracle.com>
Signed-off-by: Somasundaram Krishnasamy <somasundaram.krishnasamy@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoRDS: limit the number of times we loop in rds_send_xmit
Chris Mason [Fri, 3 Feb 2012 16:07:54 +0000 (11:07 -0500)]
RDS: limit the number of times we loop in rds_send_xmit

This will kick the RDS worker thread if we have been looping
too long.

Original commit from 2012 updated to include a change by
Venkat Venkatsubra <venkat.x.venkatsubra@oracle.com>
that triggers "must_wake" if "rds_ib_recv_refill_one" fails.

Signed-off-by: Gerd Rausch <gerd.rausch@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'netdevsim-implement-support-for-devlink-region-and-snapshots'
David S. Miller [Thu, 15 Aug 2019 19:02:44 +0000 (12:02 -0700)]
Merge branch 'netdevsim-implement-support-for-devlink-region-and-snapshots'

Jiri Pirko says:

====================
netdevsim: implement support for devlink region and snapshots

Implement devlink region support for netdevsim and test it.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoselftests: netdevsim: add devlink regions tests
Jiri Pirko [Thu, 15 Aug 2019 13:46:34 +0000 (15:46 +0200)]
selftests: netdevsim: add devlink regions tests

Test netdevsim devlink region implementation.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Tested-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonetdevsim: implement support for devlink region and snapshots
Jiri Pirko [Thu, 15 Aug 2019 13:46:33 +0000 (15:46 +0200)]
netdevsim: implement support for devlink region and snapshots

Implement dummy region of size 32K and allow user to create snapshots
or random data using debugfs file trigger.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'selftests-netdevsim-add-devlink-paramstests'
David S. Miller [Thu, 15 Aug 2019 19:01:22 +0000 (12:01 -0700)]
Merge branch 'selftests-netdevsim-add-devlink-paramstests'

Jiri Pirko says:

====================
selftests: netdevsim: add devlink paramstests

The first patch is just a helper addition as a dependency of the actual
test in patch number two.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoselftests: netdevsim: add devlink params tests
Jiri Pirko [Thu, 15 Aug 2019 13:42:29 +0000 (15:42 +0200)]
selftests: netdevsim: add devlink params tests

Test recently added netdevsim devlink param implementation.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Tested-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoselftests: net: push jq workaround into separate helper
Jiri Pirko [Thu, 15 Aug 2019 13:42:28 +0000 (15:42 +0200)]
selftests: net: push jq workaround into separate helper

Push the jq return value workaround code into a separate helper so it
could be used by the rest of the code.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agopage_pool: remove unnecessary variable init
Yunsheng Lin [Thu, 15 Aug 2019 12:41:00 +0000 (20:41 +0800)]
page_pool: remove unnecessary variable init

Remove variable initializations in functions that
are followed by assignments before use

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: sync EEE handling for RTL8168h with vendor driver
Heiner Kallweit [Thu, 15 Aug 2019 12:21:30 +0000 (14:21 +0200)]
r8169: sync EEE handling for RTL8168h with vendor driver

Sync EEE init for RTL8168h with vendor driver and add two writes to
vendor-specific registers.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'realtek-EEE'
David S. Miller [Thu, 15 Aug 2019 18:48:30 +0000 (11:48 -0700)]
Merge branch 'realtek-EEE'

Heiner Kallweit says:

====================
net: phy: realtek: map vendor-specific EEE registers to standard MMD registers

EEE-related registers on newer integrated PHY's have the standard
layout, but are accessible not via MMD but via vendor-specific
registers. Emulating the standard MMD registers allows to use the
generic functions for EEE control and to significantly simplify
the r8169 driver.

v2:
- rebase patch 2
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: use the generic EEE management functions
Heiner Kallweit [Thu, 15 Aug 2019 12:14:18 +0000 (14:14 +0200)]
r8169: use the generic EEE management functions

Now that the Realtek PHY driver maps the vendor-specific EEE registers
to the standard MMD registers, we can remove all special handling and
use the generic functions phy_ethtool_get/set_eee.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: realtek: add support for EEE registers on integrated PHY's
Heiner Kallweit [Thu, 15 Aug 2019 12:12:55 +0000 (14:12 +0200)]
net: phy: realtek: add support for EEE registers on integrated PHY's

EEE-related registers on newer integrated PHY's have the standard
layout, but are accessible not via MMD but via vendor-specific
registers. Emulating the standard MMD registers allows to use the
generic functions for EEE control.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: swphy: emulate register MII_ESTATUS
Heiner Kallweit [Thu, 15 Aug 2019 11:19:22 +0000 (13:19 +0200)]
net: phy: swphy: emulate register MII_ESTATUS

When the genphy driver binds to a swphy it will call
genphy_read_abilites that will try to read MII_ESTATUS if BMSR_ESTATEN
is set in MII_BMSR. So far this would read the default value 0xffff
and 1000FD and 1000HD are reported as supported just by chance.
Better add explicit support for emulating MII_ESTATUS.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.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>
4 years agonet: phy: read MII_CTRL1000 in genphy_read_status only if needed
Heiner Kallweit [Thu, 15 Aug 2019 11:15:19 +0000 (13:15 +0200)]
net: phy: read MII_CTRL1000 in genphy_read_status only if needed

Value of MII_CTRL1000 is needed only if LPA_1000MSFAIL is set.
Therefore move reading this register.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.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>