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version 1.103, 2023/10/15 15:18:45

version 1.104, 2023/10/15 15:32:37

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<li>Initial support for TCP segmentation offload (TSO) and TCP large receive offload (LRO) was implemented:

<ul>

<li>If the driver of a network interface supports TCP segmentation

<li>If the driver of a network interface supports TSO,

offload (TSO), do not chop the packet in the network stack,

do not chop the packet in the network stack,

but pass it down to the interface layer for TSO.

<li>Provide a software TSO implementation, to be used as a fallback

if network hardware does not support TSO.

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display separate

for TCP segmentation offload (TSOv4, TSOv6)

for TSOv4, TSOv6, and LRO and provide a

and TCP large receive offload (LRO) and provide a

parameter to disable LRO.

parameter to disable LRO on a per-interface basis.

<li>Enable TSO and forwarding of LRO packets via TSO in

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<li>Speed up TCP transfer on

interfaces by using TSO and LRO.

<li>Enable Large Receive Offload (LRO) for TCP per default in network

<li>Enable LRO per default in network

drivers. LRO allows to receive aggregated packets larger than the MTU.

Receiving TCP streams becomes much faster. Currently only <a

href="https://man.openbsd.org/lo.4">lo(4)</a> devices support LRO, and

ix(4) is limited to IPv4 and hardware newer than the old 82598 model.<br>

ix(4) is limited to IPv4 and hardware newer than the old 82598 model.

LRO can be turned off per interface with ifconfig <code>-tcplro</code>.

</ul>

<li>The following changes were made to the <a