[lwip-users] Re: [lwip] 10

[leon . woestenberg]

> All IP action occurs within the interrupt handler.
>
In general, this is a bad design principle. Unless you can assure all access
to/from lwIP is from this interrupt handler, you may have a very hard time
making sure no concurrent access to data structures occur.

For example, how do you call the _tmr() functions in lwIP with the assurance
that the interrupt handler is not invoked in the meantime?

In general, the interrupt handler should merely invoke a "lower-half"
interrupt handler (that runs out of interrupt context), which does the 
processing.

Leon.


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