Minimalistic patch to fulfil the TCP LRO contract

[tuexen]

Summary

When calling certain functions of the TCP LRO code, the caller has to enter the network epoch before. This patch ensures that. However, performance wise it might be far from optimal and should be improved by someone knowing the driver.

This fixes the issue reported in PR254695.

[gallatin]

I would do it in hn_nvs_handle_rxbuf(). Eg, take the epoch outside the for() loop, so it is held for all rx pkt reception.

[tuexen]

Address comment from gallatin@.

[tuexen]

In D31679#714633, @gallatin wrote:

I would do it in hn_nvs_handle_rxbuf(). Eg, take the epoch outside the for() loop, so it is held for all rx pkt reception.

I agree... Done.

[• hselasky]

Looks good.

[tuexen]

Committed in 26d79d40a74fc804c76acd88a1f8f10f9827a2b3.