[Bug 195078] em tx_dma_fails and dropped packets

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=195078

--- Comment #3 from DJ <fusionfoto at gmail.com> ---

After further testing, even platforms that have hw.em.rxd/txd set to 256 will
start logging errors like tx_dma_fail at high throughputs.

The only solution is to turn off txcsum, rxcsum and tso4 for these em0 cards.

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