Re: [lwip-users] Call tcp_close() out of tcp_recv()-context?

[address@hidden]

Karl Karpfen wrote:
> My question: can I do a tcp_close() from within my_recv() which is 
> called in lwIP's receive-context

Yes you can. And the lwIP API allows it.

> (which possibly may be a receive-IRQ)?

No. Unless you take special action to prevent concurrent access to the 
lwIP core (i.e. block ETH IRQ when calling lwIP functions from main 
loop), receive functions must not be called from ISR. If that is the 
case, most often the creator of your lwIP port has done something wrong. 
This has been the case for some microcontroller vendor's ports in the past.

Simon