Re: [lwip-users] http server and pbuf overflow

[Bernhard 'Gustl' Bauer]

Bill Auerbach schrieb:
> Check to be sure your Ethernet driver isn't increasing pbuf->ref anywhere.
> Some drivers do this so that the packet is freed only after a DMA transfer
> is complete and not at the time low_level_output returns.  If it's freed too
> soon the packet can be corrupted if its pbuf is used before the DMA
> finishes.

I only use pbuf_alloc() and pbuf_free(). I never use pbuf_ref(), or 
access pbuf->ref.