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Re: [lwip-users] Lwip timer ISR priority


From: Simon Goldschmidt
Subject: Re: [lwip-users] Lwip timer ISR priority
Date: Wed, 16 Mar 2011 14:40:40 +0100

Andrea Merello <address@hidden> wrote:
> What are in general the rules about concurrency in lwip for the Enet
> ISR, the lwip timers etharp_tmr() and tcp_tmr(), and the user APIs ?

lwIP's concurrency rules are very simple: parallel execution of most parts of 
the stack is *not* allowed. This includes almost everything except the 
mem(p)_*(), pbuf_*() and sys_*() functions. The netconn- and socket API 
functions may also be used from multiple threads, however, these have other 
limitations in that their objects may not be shared among multiple threads.

Simon
-- 
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