Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 556 insertions, 0 deletions

diff --git a/Documentation/networking/device_drivers/ethernet/aquantia/atlantic.rst b/Documentation/networking/device_drivers/ethernet/aquantia/atlantic.rst
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+.. SPDX-License-Identifier: GPL-2.0
+.. include:: <isonum.txt>
+
+===============================
+Marvell(Aquantia) AQtion Driver
+===============================
+
+For the aQuantia Multi-Gigabit PCI Express Family of Ethernet Adapters
+
+.. Contents
+
+    - Identifying Your Adapter
+    - Configuration
+    - Supported ethtool options
+    - Command Line Parameters
+    - Config file parameters
+    - Support
+    - License
+
+Identifying Your Adapter
+========================
+
+The driver in this release is compatible with AQC-100, AQC-107, AQC-108
+based ethernet adapters.
+
+
+SFP+ Devices (for AQC-100 based adapters)
+-----------------------------------------
+
+This release tested with passive Direct Attach Cables (DAC) and SFP+/LC
+Optical Transceiver.
+
+Configuration
+=============
+
+Viewing Link Messages
+---------------------
+  Link messages will not be displayed to the console if the distribution is
+  restricting system messages. In order to see network driver link messages on
+  your console, set dmesg to eight by entering the following::
+
+       dmesg -n 8
+
+  .. note::
+
+     This setting is not saved across reboots.
+
+Jumbo Frames
+------------
+  The driver supports Jumbo Frames for all adapters. Jumbo Frames support is
+  enabled by changing the MTU to a value larger than the default of 1500.
+  The maximum value for the MTU is 16000.  Use the `ip` command to
+  increase the MTU size.  For example::
+
+	ip link set mtu 16000 dev enp1s0
+
+ethtool
+-------
+  The driver utilizes the ethtool interface for driver configuration and
+  diagnostics, as well as displaying statistical information. The latest
+  ethtool version is required for this functionality.
+
+NAPI
+----
+  NAPI (Rx polling mode) is supported in the atlantic driver.
+
+Supported ethtool options
+=========================
+
+Viewing adapter settings
+------------------------
+
+ ::
+
+    ethtool <ethX>
+
+ Output example::
+
+  Settings for enp1s0:
+    Supported ports: [ TP ]
+    Supported link modes:   100baseT/Full
+			    1000baseT/Full
+			    10000baseT/Full
+			    2500baseT/Full
+			    5000baseT/Full
+    Supported pause frame use: Symmetric
+    Supports auto-negotiation: Yes
+    Supported FEC modes: Not reported
+    Advertised link modes:  100baseT/Full
+			    1000baseT/Full
+			    10000baseT/Full
+			    2500baseT/Full
+			    5000baseT/Full
+    Advertised pause frame use: Symmetric
+    Advertised auto-negotiation: Yes
+    Advertised FEC modes: Not reported
+    Speed: 10000Mb/s
+    Duplex: Full
+    Port: Twisted Pair
+    PHYAD: 0
+    Transceiver: internal
+    Auto-negotiation: on
+    MDI-X: Unknown
+    Supports Wake-on: g
+    Wake-on: d
+    Link detected: yes
+
+
+ .. note::
+
+    AQrate speeds (2.5/5 Gb/s) will be displayed only with linux kernels > 4.10.
+    But you can still use these speeds::
+
+	ethtool -s eth0 autoneg off speed 2500
+
+Viewing adapter information
+---------------------------
+
+ ::
+
+  ethtool -i <ethX>
+
+ Output example::
+
+  driver: atlantic
+  version: 5.2.0-050200rc5-generic-kern
+  firmware-version: 3.1.78
+  expansion-rom-version:
+  bus-info: 0000:01:00.0
+  supports-statistics: yes
+  supports-test: no
+  supports-eeprom-access: no
+  supports-register-dump: yes
+  supports-priv-flags: no
+
+
+Viewing Ethernet adapter statistics
+-----------------------------------
+
+ ::
+
+    ethtool -S <ethX>
+
+ Output example::
+
+  NIC statistics:
+     InPackets: 13238607
+     InUCast: 13293852
+     InMCast: 52
+     InBCast: 3
+     InErrors: 0
+     OutPackets: 23703019
+     OutUCast: 23704941
+     OutMCast: 67
+     OutBCast: 11
+     InUCastOctects: 213182760
+     OutUCastOctects: 22698443
+     InMCastOctects: 6600
+     OutMCastOctects: 8776
+     InBCastOctects: 192
+     OutBCastOctects: 704
+     InOctects: 2131839552
+     OutOctects: 226938073
+     InPacketsDma: 95532300
+     OutPacketsDma: 59503397
+     InOctetsDma: 1137102462
+     OutOctetsDma: 2394339518
+     InDroppedDma: 0
+     Queue[0] InPackets: 23567131
+     Queue[0] OutPackets: 20070028
+     Queue[0] InJumboPackets: 0
+     Queue[0] InLroPackets: 0
+     Queue[0] InErrors: 0
+     Queue[1] InPackets: 45428967
+     Queue[1] OutPackets: 11306178
+     Queue[1] InJumboPackets: 0
+     Queue[1] InLroPackets: 0
+     Queue[1] InErrors: 0
+     Queue[2] InPackets: 3187011
+     Queue[2] OutPackets: 13080381
+     Queue[2] InJumboPackets: 0
+     Queue[2] InLroPackets: 0
+     Queue[2] InErrors: 0
+     Queue[3] InPackets: 23349136
+     Queue[3] OutPackets: 15046810
+     Queue[3] InJumboPackets: 0
+     Queue[3] InLroPackets: 0
+     Queue[3] InErrors: 0
+
+Interrupt coalescing support
+----------------------------
+
+ ITR mode, TX/RX coalescing timings could be viewed with::
+
+    ethtool -c <ethX>
+
+ and changed with::
+
+    ethtool -C <ethX> tx-usecs <usecs> rx-usecs <usecs>
+
+ To disable coalescing::
+
+    ethtool -C <ethX> tx-usecs 0 rx-usecs 0 tx-max-frames 1 tx-max-frames 1
+
+Wake on LAN support
+-------------------
+
+ WOL support by magic packet::
+
+    ethtool -s <ethX> wol g
+
+ To disable WOL::
+
+    ethtool -s <ethX> wol d
+
+Set and check the driver message level
+--------------------------------------
+
+ Set message level
+
+ ::
+
+    ethtool -s <ethX> msglvl <level>
+
+ Level values:
+
+ ======   =============================
+ 0x0001   general driver status.
+ 0x0002   hardware probing.
+ 0x0004   link state.
+ 0x0008   periodic status check.
+ 0x0010   interface being brought down.
+ 0x0020   interface being brought up.
+ 0x0040   receive error.
+ 0x0080   transmit error.
+ 0x0200   interrupt handling.
+ 0x0400   transmit completion.
+ 0x0800   receive completion.
+ 0x1000   packet contents.
+ 0x2000   hardware status.
+ 0x4000   Wake-on-LAN status.
+ ======   =============================
+
+ By default, the level of debugging messages is set 0x0001(general driver status).
+
+ Check message level
+
+ ::
+
+    ethtool <ethX> | grep "Current message level"
+
+ If you want to disable the output of messages::
+
+    ethtool -s <ethX> msglvl 0
+
+RX flow rules (ntuple filters)
+------------------------------
+
+ There are separate rules supported, that applies in that order:
+
+ 1. 16 VLAN ID rules
+ 2. 16 L2 EtherType rules
+ 3. 8 L3/L4 5-Tuple rules
+
+
+ The driver utilizes the ethtool interface for configuring ntuple filters,
+ via ``ethtool -N <device> <filter>``.
+
+ To enable or disable the RX flow rules::
+
+    ethtool -K ethX ntuple <on|off>
+
+ When disabling ntuple filters, all the user programed filters are
+ flushed from the driver cache and hardware. All needed filters must
+ be re-added when ntuple is re-enabled.
+
+ Because of the fixed order of the rules, the location of filters is also fixed:
+
+ - Locations 0 - 15 for VLAN ID filters
+ - Locations 16 - 31 for L2 EtherType filters
+ - Locations 32 - 39 for L3/L4 5-tuple filters (locations 32, 36 for IPv6)
+
+ The L3/L4 5-tuple (protocol, source and destination IP address, source and
+ destination TCP/UDP/SCTP port) is compared against 8 filters. For IPv4, up to
+ 8 source and destination addresses can be matched. For IPv6, up to 2 pairs of
+ addresses can be supported. Source and destination ports are only compared for
+ TCP/UDP/SCTP packets.
+
+ To add a filter that directs packet to queue 5, use
+ ``<-N|-U|--config-nfc|--config-ntuple>`` switch::
+
+    ethtool -N <ethX> flow-type udp4 src-ip 10.0.0.1 dst-ip 10.0.0.2 src-port 2000 dst-port 2001 action 5 <loc 32>
+
+ - action is the queue number.
+ - loc is the rule number.
+
+ For ``flow-type ip4|udp4|tcp4|sctp4|ip6|udp6|tcp6|sctp6`` you must set the loc
+ number within 32 - 39.
+ For ``flow-type ip4|udp4|tcp4|sctp4|ip6|udp6|tcp6|sctp6`` you can set 8 rules
+ for traffic IPv4 or you can set 2 rules for traffic IPv6. Loc number traffic
+ IPv6 is 32 and 36.
+ At the moment you can not use IPv4 and IPv6 filters at the same time.
+
+ Example filter for IPv6 filter traffic::
+
+    sudo ethtool -N <ethX> flow-type tcp6 src-ip 2001:db8:0:f101::1 dst-ip 2001:db8:0:f101::2 action 1 loc 32
+    sudo ethtool -N <ethX> flow-type ip6 src-ip 2001:db8:0:f101::2 dst-ip 2001:db8:0:f101::5 action -1 loc 36
+
+ Example filter for IPv4 filter traffic::
+
+    sudo ethtool -N <ethX> flow-type udp4 src-ip 10.0.0.4 dst-ip 10.0.0.7 src-port 2000 dst-port 2001 loc 32
+    sudo ethtool -N <ethX> flow-type tcp4 src-ip 10.0.0.3 dst-ip 10.0.0.9 src-port 2000 dst-port 2001 loc 33
+    sudo ethtool -N <ethX> flow-type ip4 src-ip 10.0.0.6 dst-ip 10.0.0.4 loc 34
+
+ If you set action -1, then all traffic corresponding to the filter will be discarded.
+
+ The maximum value action is 31.
+
+
+ The VLAN filter (VLAN id) is compared against 16 filters.
+ VLAN id must be accompanied by mask 0xF000. That is to distinguish VLAN filter
+ from L2 Ethertype filter with UserPriority since both User Priority and VLAN ID
+ are passed in the same 'vlan' parameter.
+
+ To add a filter that directs packets from VLAN 2001 to queue 5::
+
+    ethtool -N <ethX> flow-type ip4 vlan 2001 m 0xF000 action 1 loc 0
+
+
+ L2 EtherType filters allows filter packet by EtherType field or both EtherType
+ and User Priority (PCP) field of 802.1Q.
+ UserPriority (vlan) parameter must be accompanied by mask 0x1FFF. That is to
+ distinguish VLAN filter from L2 Ethertype filter with UserPriority since both
+ User Priority and VLAN ID are passed in the same 'vlan' parameter.
+
+ To add a filter that directs IP4 packess of priority 3 to queue 3::
+
+    ethtool -N <ethX> flow-type ether proto 0x800 vlan 0x600 m 0x1FFF action 3 loc 16
+
+ To see the list of filters currently present::
+
+    ethtool <-u|-n|--show-nfc|--show-ntuple> <ethX>
+
+ Rules may be deleted from the table itself. This is done using::
+
+    sudo ethtool <-N|-U|--config-nfc|--config-ntuple> <ethX> delete <loc>
+
+ - loc is the rule number to be deleted.
+
+ Rx filters is an interface to load the filter table that funnels all flow
+ into queue 0 unless an alternative queue is specified using "action". In that
+ case, any flow that matches the filter criteria will be directed to the
+ appropriate queue. RX filters is supported on all kernels 2.6.30 and later.
+
+RSS for UDP
+-----------
+
+ Currently, NIC does not support RSS for fragmented IP packets, which leads to
+ incorrect working of RSS for fragmented UDP traffic. To disable RSS for UDP the
+ RX Flow L3/L4 rule may be used.
+
+ Example::
+
+    ethtool -N eth0 flow-type udp4 action 0 loc 32
+
+UDP GSO hardware offload
+------------------------
+
+ UDP GSO allows to boost UDP tx rates by offloading UDP headers allocation
+ into hardware. A special userspace socket option is required for this,
+ could be validated with /kernel/tools/testing/selftests/net/::
+
+    udpgso_bench_tx -u -4 -D 10.0.1.1 -s 6300 -S 100
+
+ Will cause sending out of 100 byte sized UDP packets formed from single
+ 6300 bytes user buffer.
+
+ UDP GSO is configured by::
+
+    ethtool -K eth0 tx-udp-segmentation on
+
+Private flags (testing)
+-----------------------
+
+ Atlantic driver supports private flags for hardware custom features::
+
+	$ ethtool --show-priv-flags ethX
+
+	Private flags for ethX:
+	DMASystemLoopback  : off
+	PKTSystemLoopback  : off
+	DMANetworkLoopback : off
+	PHYInternalLoopback: off
+	PHYExternalLoopback: off
+
+ Example::
+
+	$ ethtool --set-priv-flags ethX DMASystemLoopback on
+
+ DMASystemLoopback:   DMA Host loopback.
+ PKTSystemLoopback:   Packet buffer host loopback.
+ DMANetworkLoopback:  Network side loopback on DMA block.
+ PHYInternalLoopback: Internal loopback on Phy.
+ PHYExternalLoopback: External loopback on Phy (with loopback ethernet cable).
+
+
+Command Line Parameters
+=======================
+The following command line parameters are available on atlantic driver:
+
+aq_itr -Interrupt throttling mode
+---------------------------------
+Accepted values: 0, 1, 0xFFFF
+
+Default value: 0xFFFF
+
+======   ==============================================================
+0        Disable interrupt throttling.
+1        Enable interrupt throttling and use specified tx and rx rates.
+0xFFFF   Auto throttling mode. Driver will choose the best RX and TX
+	 interrupt throtting settings based on link speed.
+======   ==============================================================
+
+aq_itr_tx - TX interrupt throttle rate
+--------------------------------------
+
+Accepted values: 0 - 0x1FF
+
+Default value: 0
+
+TX side throttling in microseconds. Adapter will setup maximum interrupt delay
+to this value. Minimum interrupt delay will be a half of this value
+
+aq_itr_rx - RX interrupt throttle rate
+--------------------------------------
+
+Accepted values: 0 - 0x1FF
+
+Default value: 0
+
+RX side throttling in microseconds. Adapter will setup maximum interrupt delay
+to this value. Minimum interrupt delay will be a half of this value
+
+.. note::
+
+   ITR settings could be changed in runtime by ethtool -c means (see below)
+
+Config file parameters
+======================
+
+For some fine tuning and performance optimizations,
+some parameters can be changed in the {source_dir}/aq_cfg.h file.
+
+AQ_CFG_RX_PAGEORDER
+-------------------
+
+Default value: 0
+
+RX page order override. Thats a power of 2 number of RX pages allocated for
+each descriptor. Received descriptor size is still limited by
+AQ_CFG_RX_FRAME_MAX.
+
+Increasing pageorder makes page reuse better (actual on iommu enabled systems).
+
+AQ_CFG_RX_REFILL_THRES
+----------------------
+
+Default value: 32
+
+RX refill threshold. RX path will not refill freed descriptors until the
+specified number of free descriptors is observed. Larger values may help
+better page reuse but may lead to packet drops as well.
+
+AQ_CFG_VECS_DEF
+---------------
+
+Number of queues
+
+Valid Range: 0 - 8 (up to AQ_CFG_VECS_MAX)
+
+Default value: 8
+
+Notice this value will be capped by the number of cores available on the system.
+
+AQ_CFG_IS_RSS_DEF
+-----------------
+
+Enable/disable Receive Side Scaling
+
+This feature allows the adapter to distribute receive processing
+across multiple CPU-cores and to prevent from overloading a single CPU core.
+
+Valid values
+
+==  ========
+0   disabled
+1   enabled
+==  ========
+
+Default value: 1
+
+AQ_CFG_NUM_RSS_QUEUES_DEF
+-------------------------
+
+Number of queues for Receive Side Scaling
+
+Valid Range: 0 - 8 (up to AQ_CFG_VECS_DEF)
+
+Default value: AQ_CFG_VECS_DEF
+
+AQ_CFG_IS_LRO_DEF
+-----------------
+
+Enable/disable Large Receive Offload
+
+This offload enables the adapter to coalesce multiple TCP segments and indicate
+them as a single coalesced unit to the OS networking subsystem.
+
+The system consumes less energy but it also introduces more latency in packets
+processing.
+
+Valid values
+
+==  ========
+0   disabled
+1   enabled
+==  ========
+
+Default value: 1
+
+AQ_CFG_TX_CLEAN_BUDGET
+----------------------
+
+Maximum descriptors to cleanup on TX at once.
+
+Default value: 256
+
+After the aq_cfg.h file changed the driver must be rebuilt to take effect.
+
+Support
+=======
+
+If an issue is identified with the released source code on the supported
+kernel with a supported adapter, email the specific information related
+to the issue to aqn_support@marvell.com
+
+License
+=======
+
+aQuantia Corporation Network Driver
+
+Copyright |copy| 2014 - 2019 aQuantia Corporation.
+
+This program is free software; you can redistribute it and/or modify it
+under the terms and conditions of the GNU General Public License,
+version 2, as published by the Free Software Foundation.