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81f7e3824   Eric Lee   Initial Release, ... 
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  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