RE: [lwip-users] How to securely switch between DHCP and static IP assignment?

[Simon Goldschmidt]

"Benjamin Schelte" wrote:
> Actually I am not calling those functions from the tcpip_thread
> environment.
> So in case I have to, how can I manage to make the thread to do so?

Generally, all functions in lwIP except for the socket API, the netconn API, 
the threaded netif-API (netifapi_* functions), the allocations functions 
(pbuf_*(), mem_*() and memp_*() functions) must NOT be called from any other 
thread than the tcpip_thread. Of course when not using an OS, this must read as 
"not be called from interrupt context".

When using tcpip.c, use tcpip_callback to call a function with a given argument 
in the tcpip_thread. The function pointer and the argument pointer are enqueued 
in the tcpip_thread's mbox and will get called eventually, so care must be 
taken about the argument's lifetime.

Simon
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