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-.. SPDX-License-Identifier: GPL-2.0
-
-==============================================================================
-Neterion's (Formerly S2io) X3100 Series 10GbE PCIe Server Adapter Linux driver
-==============================================================================
-
-.. Contents
-
- 1) Introduction
- 2) Features supported
- 3) Configurable driver parameters
- 4) Troubleshooting
-
-1. Introduction
-===============
-
-This Linux driver supports all Neterion's X3100 series 10 GbE PCIe I/O
-Virtualized Server adapters.
-
-The X3100 series supports four modes of operation, configurable via
-firmware:
-
- - Single function mode
- - Multi function mode
- - SRIOV mode
- - MRIOV mode
-
-The functions share a 10GbE link and the pci-e bus, but hardly anything else
-inside the ASIC. Features like independent hw reset, statistics, bandwidth/
-priority allocation and guarantees, GRO, TSO, interrupt moderation etc are
-supported independently on each function.
-
-(See below for a complete list of features supported for both IPv4 and IPv6)
-
-2. Features supported
-=====================
-
-i) Single function mode (up to 17 queues)
-
-ii) Multi function mode (up to 17 functions)
-
-iii) PCI-SIG's I/O Virtualization
-
- - Single Root mode: v1.0 (up to 17 functions)
- - Multi-Root mode: v1.0 (up to 17 functions)
-
-iv) Jumbo frames
-
- X3100 Series supports MTU up to 9600 bytes, modifiable using
- ip command.
-
-v) Offloads supported: (Enabled by default)
-
- - Checksum offload (TCP/UDP/IP) on transmit and receive paths
- - TCP Segmentation Offload (TSO) on transmit path
- - Generic Receive Offload (GRO) on receive path
-
-vi) MSI-X: (Enabled by default)
-
- Resulting in noticeable performance improvement (up to 7% on certain
- platforms).
-
-vii) NAPI: (Enabled by default)
-
- For better Rx interrupt moderation.
-
-viii)RTH (Receive Traffic Hash): (Enabled by default)
-
- Receive side steering for better scaling.
-
-ix) Statistics
-
- Comprehensive MAC-level and software statistics displayed using
- "ethtool -S" option.
-
-x) Multiple hardware queues: (Enabled by default)
-
- Up to 17 hardware based transmit and receive data channels, with
- multiple steering options (transmit multiqueue enabled by default).
-
-3) Configurable driver parameters:
-----------------------------------
-
-i) max_config_dev
- Specifies maximum device functions to be enabled.
-
- Valid range: 1-8
-
-ii) max_config_port
- Specifies number of ports to be enabled.
-
- Valid range: 1,2
-
- Default: 1
-
-iii) max_config_vpath
- Specifies maximum VPATH(s) configured for each device function.
-
- Valid range: 1-17
-
-iv) vlan_tag_strip
- Enables/disables vlan tag stripping from all received tagged frames that
- are not replicated at the internal L2 switch.
-
- Valid range: 0,1 (disabled, enabled respectively)
-
- Default: 1
-
-v) addr_learn_en
- Enable learning the mac address of the guest OS interface in
- virtualization environment.
-
- Valid range: 0,1 (disabled, enabled respectively)
-
- Default: 0