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Differential D48971

gve: Disallow MTUs within a problematic range
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Authored by jtranoleary_google.com on Feb 12 2025, 6:20 PM.
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markj
delphij
kibab
shailend_google.com
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rG9d4823824d40: gve: Disallow MTUs within a problematic range
rG909e2d7b691f: gve: Disallow MTUs within a problematic range
Summary

If hardware LRO is enabled with GVE, then setting the driver's MTU to a
range of values around 8000 will cause dropped packets and drastically
degraded performance. While this issue is being investigated, we need
to prohibit the driver's MTU being set to a value within this range.

Signed-off-by: Jasper Tran O'Leary <jtranoleary@google.com>

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rG FreeBSD src repository
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Buildable 62402
Build 59286: arc lint + arc unit

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sys/
dev/
gve/
15 lines

Diff 150918

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sys/dev/gve/gve_main.c

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