Merge branch 'for-5.5/core' into for-linus

- hid_have_special_driver[] cleanup for LED devices (Heiner Kallweit)
- HID parser improvements (Blaž Hrastnik, Candle Sun)

17 files changed, 88 insertions, 81 deletions

diff --git a/Documentation/networking/device_drivers/index.rst b/Documentation/networking/device_drivers/index.rst
index f51f92571e39..c1f7f75e5fd9 100644
--- a/Documentation/networking/device_drivers/index.rst
+++ b/Documentation/networking/device_drivers/index.rst
@@ -23,6 +23,7 @@ Contents:
    intel/ice
    google/gve
    mellanox/mlx5
+   netronome/nfp
    pensando/ionic
 
 .. only::  subproject and html
diff --git a/Documentation/networking/device_drivers/intel/e100.rst b/Documentation/networking/device_drivers/intel/e100.rst
index 2b9f4887beda..caf023cc88de 100644
--- a/Documentation/networking/device_drivers/intel/e100.rst
+++ b/Documentation/networking/device_drivers/intel/e100.rst
@@ -1,8 +1,8 @@
 .. SPDX-License-Identifier: GPL-2.0+
 
-==============================================================
-Linux* Base Driver for the Intel(R) PRO/100 Family of Adapters
-==============================================================
+=============================================================
+Linux Base Driver for the Intel(R) PRO/100 Family of Adapters
+=============================================================
 
 June 1, 2018
 
@@ -21,7 +21,7 @@ Contents
 In This Release
 ===============
 
-This file describes the Linux* Base Driver for the Intel(R) PRO/100 Family of
+This file describes the Linux Base Driver for the Intel(R) PRO/100 Family of
 Adapters. This driver includes support for Itanium(R)2-based systems.
 
 For questions related to hardware requirements, refer to the documentation
@@ -138,9 +138,9 @@ version 1.6 or later is required for this functionality.
 The latest release of ethtool can be found from
 https://www.kernel.org/pub/software/network/ethtool/
 
-Enabling Wake on LAN* (WoL)
----------------------------
-WoL is provided through the ethtool* utility.  For instructions on
+Enabling Wake on LAN (WoL)
+--------------------------
+WoL is provided through the ethtool utility.  For instructions on
 enabling WoL with ethtool, refer to the ethtool man page.  WoL will be
 enabled on the system during the next shut down or reboot.  For this
 driver version, in order to enable WoL, the e100 driver must be loaded
diff --git a/Documentation/networking/device_drivers/intel/e1000.rst b/Documentation/networking/device_drivers/intel/e1000.rst
index 956560b6e745..4aaae0f7d6ba 100644
--- a/Documentation/networking/device_drivers/intel/e1000.rst
+++ b/Documentation/networking/device_drivers/intel/e1000.rst
@@ -1,8 +1,8 @@
 .. SPDX-License-Identifier: GPL-2.0+
 
-===========================================================
-Linux* Base Driver for Intel(R) Ethernet Network Connection
-===========================================================
+==========================================================
+Linux Base Driver for Intel(R) Ethernet Network Connection
+==========================================================
 
 Intel Gigabit Linux driver.
 Copyright(c) 1999 - 2013 Intel Corporation.
@@ -438,10 +438,10 @@ ethtool
   The latest release of ethtool can be found from
   https://www.kernel.org/pub/software/network/ethtool/
 
-Enabling Wake on LAN* (WoL)
----------------------------
+Enabling Wake on LAN (WoL)
+--------------------------
 
-  WoL is configured through the ethtool* utility.
+  WoL is configured through the ethtool utility.
 
   WoL will be enabled on the system during the next shut down or reboot.
   For this driver version, in order to enable WoL, the e1000 driver must be
diff --git a/Documentation/networking/device_drivers/intel/e1000e.rst b/Documentation/networking/device_drivers/intel/e1000e.rst
index 01999f05509c..f49cd370e7bf 100644
--- a/Documentation/networking/device_drivers/intel/e1000e.rst
+++ b/Documentation/networking/device_drivers/intel/e1000e.rst
@@ -1,8 +1,8 @@
 .. SPDX-License-Identifier: GPL-2.0+
 
-======================================================
-Linux* Driver for Intel(R) Ethernet Network Connection
-======================================================
+=====================================================
+Linux Driver for Intel(R) Ethernet Network Connection
+=====================================================
 
 Intel Gigabit Linux driver.
 Copyright(c) 2008-2018 Intel Corporation.
@@ -338,7 +338,7 @@ and higher cannot be forced. Use the autonegotiation advertising setting to
 manually set devices for 1 Gbps and higher.
 
 Speed, duplex, and autonegotiation advertising are configured through the
-ethtool* utility.
+ethtool utility.
 
 Caution: Only experienced network administrators should force speed and duplex
 or change autonegotiation advertising manually. The settings at the switch must
@@ -351,9 +351,9 @@ will not attempt to auto-negotiate with its link partner since those adapters
 operate only in full duplex and only at their native speed.
 
 
-Enabling Wake on LAN* (WoL)
----------------------------
-WoL is configured through the ethtool* utility.
+Enabling Wake on LAN (WoL)
+--------------------------
+WoL is configured through the ethtool utility.
 
 WoL will be enabled on the system during the next shut down or reboot. For
 this driver version, in order to enable WoL, the e1000e driver must be loaded
diff --git a/Documentation/networking/device_drivers/intel/fm10k.rst b/Documentation/networking/device_drivers/intel/fm10k.rst
index ac3269e34f55..4d279e64e221 100644
--- a/Documentation/networking/device_drivers/intel/fm10k.rst
+++ b/Documentation/networking/device_drivers/intel/fm10k.rst
@@ -1,8 +1,8 @@
 .. SPDX-License-Identifier: GPL-2.0+
 
-==============================================================
-Linux* Base Driver for Intel(R) Ethernet Multi-host Controller
-==============================================================
+=============================================================
+Linux Base Driver for Intel(R) Ethernet Multi-host Controller
+=============================================================
 
 August 20, 2018
 Copyright(c) 2015-2018 Intel Corporation.
@@ -120,8 +120,8 @@ rx-flow-hash tcp4|udp4|ah4|esp4|sctp4|tcp6|udp6|ah6|esp6|sctp6 m|v|t|s|d|f|n|r
 Known Issues/Troubleshooting
 ============================
 
-Enabling SR-IOV in a 64-bit Microsoft* Windows Server* 2012/R2 guest OS under Linux KVM
----------------------------------------------------------------------------------------
+Enabling SR-IOV in a 64-bit Microsoft Windows Server 2012/R2 guest OS under Linux KVM
+-------------------------------------------------------------------------------------
 KVM Hypervisor/VMM supports direct assignment of a PCIe device to a VM. This
 includes traditional PCIe devices, as well as SR-IOV-capable devices based on
 the Intel Ethernet Controller XL710.
diff --git a/Documentation/networking/device_drivers/intel/i40e.rst b/Documentation/networking/device_drivers/intel/i40e.rst
index 848fd388fa6e..8a9b18573688 100644
--- a/Documentation/networking/device_drivers/intel/i40e.rst
+++ b/Documentation/networking/device_drivers/intel/i40e.rst
@@ -1,8 +1,8 @@
 .. SPDX-License-Identifier: GPL-2.0+
 
-==================================================================
-Linux* Base Driver for the Intel(R) Ethernet Controller 700 Series
-==================================================================
+=================================================================
+Linux Base Driver for the Intel(R) Ethernet Controller 700 Series
+=================================================================
 
 Intel 40 Gigabit Linux driver.
 Copyright(c) 1999-2018 Intel Corporation.
@@ -384,7 +384,7 @@ NOTE: You cannot set the speed for devices based on the Intel(R) Ethernet
 Network Adapter XXV710 based devices.
 
 Speed, duplex, and autonegotiation advertising are configured through the
-ethtool* utility.
+ethtool utility.
 
 Caution: Only experienced network administrators should force speed and duplex
 or change autonegotiation advertising manually. The settings at the switch must
diff --git a/Documentation/networking/device_drivers/intel/iavf.rst b/Documentation/networking/device_drivers/intel/iavf.rst
index cfc08842e32c..84ac7e75f363 100644
--- a/Documentation/networking/device_drivers/intel/iavf.rst
+++ b/Documentation/networking/device_drivers/intel/iavf.rst
@@ -1,8 +1,8 @@
 .. SPDX-License-Identifier: GPL-2.0+
 
-==================================================================
-Linux* Base Driver for Intel(R) Ethernet Adaptive Virtual Function
-==================================================================
+=================================================================
+Linux Base Driver for Intel(R) Ethernet Adaptive Virtual Function
+=================================================================
 
 Intel Ethernet Adaptive Virtual Function Linux driver.
 Copyright(c) 2013-2018 Intel Corporation.
@@ -19,7 +19,7 @@ Contents
 Overview
 ========
 
-This file describes the iavf Linux* Base Driver. This driver was formerly
+This file describes the iavf Linux Base Driver. This driver was formerly
 called i40evf.
 
 The iavf driver supports the below mentioned virtual function devices and
diff --git a/Documentation/networking/device_drivers/intel/ice.rst b/Documentation/networking/device_drivers/intel/ice.rst
index c220aa2711c6..ee43ea57d443 100644
--- a/Documentation/networking/device_drivers/intel/ice.rst
+++ b/Documentation/networking/device_drivers/intel/ice.rst
@@ -1,8 +1,8 @@
 .. SPDX-License-Identifier: GPL-2.0+
 
-===================================================================
-Linux* Base Driver for the Intel(R) Ethernet Connection E800 Series
-===================================================================
+==================================================================
+Linux Base Driver for the Intel(R) Ethernet Connection E800 Series
+==================================================================
 
 Intel ice Linux driver.
 Copyright(c) 2018 Intel Corporation.
diff --git a/Documentation/networking/device_drivers/intel/igb.rst b/Documentation/networking/device_drivers/intel/igb.rst
index fc8cfaa5dcfa..87e560fe5eaa 100644
--- a/Documentation/networking/device_drivers/intel/igb.rst
+++ b/Documentation/networking/device_drivers/intel/igb.rst
@@ -1,8 +1,8 @@
 .. SPDX-License-Identifier: GPL-2.0+
 
-===========================================================
-Linux* Base Driver for Intel(R) Ethernet Network Connection
-===========================================================
+==========================================================
+Linux Base Driver for Intel(R) Ethernet Network Connection
+==========================================================
 
 Intel Gigabit Linux driver.
 Copyright(c) 1999-2018 Intel Corporation.
@@ -129,9 +129,9 @@ version is required for this functionality. Download it at:
 https://www.kernel.org/pub/software/network/ethtool/
 
 
-Enabling Wake on LAN* (WoL)
----------------------------
-WoL is configured through the ethtool* utility.
+Enabling Wake on LAN (WoL)
+--------------------------
+WoL is configured through the ethtool utility.
 
 WoL will be enabled on the system during the next shut down or reboot. For
 this driver version, in order to enable WoL, the igb driver must be loaded
diff --git a/Documentation/networking/device_drivers/intel/igbvf.rst b/Documentation/networking/device_drivers/intel/igbvf.rst
index 9cddabe8108e..557fc020ef31 100644
--- a/Documentation/networking/device_drivers/intel/igbvf.rst
+++ b/Documentation/networking/device_drivers/intel/igbvf.rst
@@ -1,8 +1,8 @@
 .. SPDX-License-Identifier: GPL-2.0+
 
-============================================================
-Linux* Base Virtual Function Driver for Intel(R) 1G Ethernet
-============================================================
+===========================================================
+Linux Base Virtual Function Driver for Intel(R) 1G Ethernet
+===========================================================
 
 Intel Gigabit Virtual Function Linux driver.
 Copyright(c) 1999-2018 Intel Corporation.
diff --git a/Documentation/networking/device_drivers/intel/ixgbe.rst b/Documentation/networking/device_drivers/intel/ixgbe.rst
index c7d25483fedb..f1d5233e5e51 100644
--- a/Documentation/networking/device_drivers/intel/ixgbe.rst
+++ b/Documentation/networking/device_drivers/intel/ixgbe.rst
@@ -1,8 +1,8 @@
 .. SPDX-License-Identifier: GPL-2.0+
 
-=============================================================================
-Linux* Base Driver for the Intel(R) Ethernet 10 Gigabit PCI Express Adapters
-=============================================================================
+===========================================================================
+Linux Base Driver for the Intel(R) Ethernet 10 Gigabit PCI Express Adapters
+===========================================================================
 
 Intel 10 Gigabit Linux driver.
 Copyright(c) 1999-2018 Intel Corporation.
@@ -519,8 +519,8 @@ The offload is also supported for ixgbe's VFs, but the VF must be set as
 Known Issues/Troubleshooting
 ============================
 
-Enabling SR-IOV in a 64-bit Microsoft* Windows Server* 2012/R2 guest OS
------------------------------------------------------------------------
+Enabling SR-IOV in a 64-bit Microsoft Windows Server 2012/R2 guest OS
+---------------------------------------------------------------------
 Linux KVM Hypervisor/VMM supports direct assignment of a PCIe device to a VM.
 This includes traditional PCIe devices, as well as SR-IOV-capable devices based
 on the Intel Ethernet Controller XL710.
diff --git a/Documentation/networking/device_drivers/intel/ixgbevf.rst b/Documentation/networking/device_drivers/intel/ixgbevf.rst
index 5d4977360157..76bbde736f21 100644
--- a/Documentation/networking/device_drivers/intel/ixgbevf.rst
+++ b/Documentation/networking/device_drivers/intel/ixgbevf.rst
@@ -1,8 +1,8 @@
 .. SPDX-License-Identifier: GPL-2.0+
 
-=============================================================
-Linux* Base Virtual Function Driver for Intel(R) 10G Ethernet
-=============================================================
+============================================================
+Linux Base Virtual Function Driver for Intel(R) 10G Ethernet
+============================================================
 
 Intel 10 Gigabit Virtual Function Linux driver.
 Copyright(c) 1999-2018 Intel Corporation.
diff --git a/Documentation/networking/device_drivers/pensando/ionic.rst b/Documentation/networking/device_drivers/pensando/ionic.rst
index 67b6839d516b..c17d680cf334 100644
--- a/Documentation/networking/device_drivers/pensando/ionic.rst
+++ b/Documentation/networking/device_drivers/pensando/ionic.rst
@@ -1,8 +1,8 @@
 .. SPDX-License-Identifier: GPL-2.0+
 
-==========================================================
-Linux* Driver for the Pensando(R) Ethernet adapter family
-==========================================================
+========================================================
+Linux Driver for the Pensando(R) Ethernet adapter family
+========================================================
 
 Pensando Linux Ethernet driver.
 Copyright(c) 2019 Pensando Systems, Inc
@@ -36,8 +36,10 @@ Support
 =======
 For general Linux networking support, please use the netdev mailing
 list, which is monitored by Pensando personnel::
+
   netdev@vger.kernel.org
 
 For more specific support needs, please use the Pensando driver support
 email::
-	drivers@pensando.io
+
+  drivers@pensando.io
diff --git a/Documentation/networking/devlink-trap.rst b/Documentation/networking/devlink-trap.rst
index c20c7c483664..8e90a85f3bd5 100644
--- a/Documentation/networking/devlink-trap.rst
+++ b/Documentation/networking/devlink-trap.rst
@@ -143,7 +143,8 @@ be added to the following table:
    * - ``port_list_is_empty``
      - ``drop``
      - Traps packets that the device decided to drop in case they need to be
-       flooded and the flood list is empty
+       flooded (e.g., unknown unicast, unregistered multicast) and there are
+       no ports the packets should be flooded to
    * - ``port_loopback_filter``
      - ``drop``
      - Traps packets that the device decided to drop in case after layer 2
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 49e95f438ed7..8d4ad1d1ae26 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -207,8 +207,8 @@ TCP variables:
 
 somaxconn - INTEGER
 	Limit of socket listen() backlog, known in userspace as SOMAXCONN.
-	Defaults to 128.  See also tcp_max_syn_backlog for additional tuning
-	for TCP sockets.
+	Defaults to 4096. (Was 128 before linux-5.4)
+	See also tcp_max_syn_backlog for additional tuning for TCP sockets.
 
 tcp_abort_on_overflow - BOOLEAN
 	If listening service is too slow to accept new connections,
@@ -408,11 +408,14 @@ tcp_max_orphans - INTEGER
 	up to ~64K of unswappable memory.
 
 tcp_max_syn_backlog - INTEGER
-	Maximal number of remembered connection requests, which have not
-	received an acknowledgment from connecting client.
+	Maximal number of remembered connection requests (SYN_RECV),
+	which have not received an acknowledgment from connecting client.
+	This is a per-listener limit.
 	The minimal value is 128 for low memory machines, and it will
 	increase in proportion to the memory of machine.
 	If server suffers from overload, try increasing this number.
+	Remember to also check /proc/sys/net/core/somaxconn
+	A SYN_RECV request socket consumes about 304 bytes of memory.
 
 tcp_max_tw_buckets - INTEGER
 	Maximal number of timewait sockets held by system simultaneously.
diff --git a/Documentation/networking/j1939.rst b/Documentation/networking/j1939.rst
index ce7e7a044e08..dc60b13fcd09 100644
--- a/Documentation/networking/j1939.rst
+++ b/Documentation/networking/j1939.rst
@@ -272,7 +272,7 @@ supported flags are:
 * MSG_DONTWAIT, i.e. non-blocking operation.
 
 recvmsg(2)
-^^^^^^^^^
+^^^^^^^^^^
 
 In most cases recvmsg(2) is needed if you want to extract more information than
 recvfrom(2) can provide. For example package priority and timestamp. The
diff --git a/Documentation/networking/net_dim.txt b/Documentation/networking/net_dim.txt
index 9cb31c5e2dcd..9bdb7d5a3ba3 100644
--- a/Documentation/networking/net_dim.txt
+++ b/Documentation/networking/net_dim.txt
@@ -92,16 +92,16 @@ under some conditions.
 Part III: Registering a Network Device to DIM
 ==============================================
 
-Net DIM API exposes the main function net_dim(struct net_dim *dim,
-struct net_dim_sample end_sample). This function is the entry point to the Net
+Net DIM API exposes the main function net_dim(struct dim *dim,
+struct dim_sample end_sample). This function is the entry point to the Net
 DIM algorithm and has to be called every time the driver would like to check if
 it should change interrupt moderation parameters. The driver should provide two
-data structures: struct net_dim and struct net_dim_sample. Struct net_dim
+data structures: struct dim and struct dim_sample. Struct dim
 describes the state of DIM for a specific object (RX queue, TX queue,
 other queues, etc.). This includes the current selected profile, previous data
 samples, the callback function provided by the driver and more.
-Struct net_dim_sample describes a data sample, which will be compared to the
-data sample stored in struct net_dim in order to decide on the algorithm's next
+Struct dim_sample describes a data sample, which will be compared to the
+data sample stored in struct dim in order to decide on the algorithm's next
 step. The sample should include bytes, packets and interrupts, measured by
 the driver.
 
@@ -110,9 +110,9 @@ main net_dim() function. The recommended method is to call net_dim() on each
 interrupt. Since Net DIM has a built-in moderation and it might decide to skip
 iterations under certain conditions, there is no need to moderate the net_dim()
 calls as well. As mentioned above, the driver needs to provide an object of type
-struct net_dim to the net_dim() function call. It is advised for each entity
-using Net DIM to hold a struct net_dim as part of its data structure and use it
-as the main Net DIM API object. The struct net_dim_sample should hold the latest
+struct dim to the net_dim() function call. It is advised for each entity
+using Net DIM to hold a struct dim as part of its data structure and use it
+as the main Net DIM API object. The struct dim_sample should hold the latest
 bytes, packets and interrupts count. No need to perform any calculations, just
 include the raw data.
 
@@ -132,19 +132,19 @@ usage is not complete but it should make the outline of the usage clear.
 
 my_driver.c:
 
-#include <linux/net_dim.h>
+#include <linux/dim.h>
 
 /* Callback for net DIM to schedule on a decision to change moderation */
 void my_driver_do_dim_work(struct work_struct *work)
 {
-	/* Get struct net_dim from struct work_struct */
-	struct net_dim *dim = container_of(work, struct net_dim,
-					   work);
+	/* Get struct dim from struct work_struct */
+	struct dim *dim = container_of(work, struct dim,
+				       work);
 	/* Do interrupt moderation related stuff */
 	...
 
 	/* Signal net DIM work is done and it should move to next iteration */
-	dim->state = NET_DIM_START_MEASURE;
+	dim->state = DIM_START_MEASURE;
 }
 
 /* My driver's interrupt handler */
@@ -152,13 +152,13 @@ int my_driver_handle_interrupt(struct my_driver_entity *my_entity, ...)
 {
 	...
 	/* A struct to hold current measured data */
-	struct net_dim_sample dim_sample;
+	struct dim_sample dim_sample;
 	...
 	/* Initiate data sample struct with current data */
-	net_dim_sample(my_entity->events,
-		       my_entity->packets,
-		       my_entity->bytes,
-		       &dim_sample);
+	dim_update_sample(my_entity->events,
+		          my_entity->packets,
+		          my_entity->bytes,
+		          &dim_sample);
 	/* Call net DIM */
 	net_dim(&my_entity->dim, dim_sample);
 	...