Going Big with TCP Packets

Re:Going Big with TCP Packets by drewg123 on Wednesday February 16, 2022 @12:43PM (#30363051)

If you read the actual LKML message, and not just the LWN article, it becomes clear this is really about bumping TSO/LRO sizes in linux, not about using link layer MTUs in excess of 64k. This is more akin to Microsoft's "LSOv2" (which is even mentioned in Erick's commit message for the mlx5 driver).

I'm not sure if the LWN author just doesn't understand the distinction, or if they were trying to simplify things for their readers..

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Re:Going Big with TCP Packets by Sesse__ on Wednesday February 16, 2022 @01:33PM (#30363786)

The article is clear that it's about TSO:

> Modern network interfaces perform segmentation offloading, meaning that much of the work of creating individual packets is done within the interface itself. Making segmentation offloading work with jumbo packets tends to involve a small number of tweaks; a few drivers are updated in the patch set.

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Re:Going Big with TCP Packets by drewg123 on Wednesday February 16, 2022 @01:40PM (#30363893)

I was keying off of this "The BIG TCP patch set adds the logic necessary to generate and accept jumbo packets when the maximum transmission unit (MTU) of a connection is set sufficiently high.", which made it sound to me like the author believed that the MTU was 185k

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