Re: [lwip-users] Using pbuf_free outside of the lwip main thread

[address@hidden]

multiplex wrote:
> Is it safe to then call pbuf_free from this other thread ?
> lwIP 1.3.0 (Xilinx microblaze port), socket based.
>    
pbuf_free() is thread-safe for all pbuf types if SYS_LIGHTWEIGHT_PROT==1 
(or SYS_ARCH_PROTECT defined by yourself). The only limitation here is 
that to call pbuf_free() from interrupt context, you additionally have 
to set LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT==1 since otherwise, 
mem_free() tries to wait on a mutex (which it can't, from an interrupt).

Simon