User Manual

Rev 4.70
Mellanox Technologies
179
*LsoV1IPv4 1 Large Send Offload Version 2 (IPv4).
The valid values are:
• 0: disable
• 1: enable
*LsoV1IPv4 1 Large Send Offload Version 2 (IPv6).
The valid values are:
• 0: disable
• 1: enable
LSOSize 32000 The maximum number of bytes that the TCP/IP stack can pass to
an adapter in a single packet.
This value affects the memory consumption and the NIC perfor-
mance.
The valid values are MTU+1024 up to 64000.
Note: This registry key is not exposed to the user via the UI.
If LSOSize is smaller than MTU+1024, LSO will be disabled.
LSOMinSegment 2 The minimum number of segments that a large TCP packet must be
divisible by, before the transport can offload it to a NIC for seg-
mentation.
The valid values are 2 up to 32.
Note: This registry key is not exposed to the user via the UI.
LSOTcpOptions 1 Enables that the miniport driver to segment a large TCP packet
whose TCP header contains TCP options.
The valid values are:
• 0: disable
• 1: enable
Note: This registry key is not exposed to the user via the UI.
LSOIpOptions 1 Enables its NIC to segment a large TCP packet whose IP header
contains IP options.
The valid values are:
• 0: disable
• 1: enable
Note: This registry key is not exposed to the user via the UI.
*IPChecksumOffloadIP
v4
3 Specifies whether the device performs the calculation of IPv4
checksums.
The valid values are:
• 0: (disable)
• 1: (Tx Enable)
• 2: (Rx Enable)
• 3: (Tx and Rx enable)
Value Name Default Value Description