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