[lwip-users] System crashes with heavy load while connected to a hub

[Marco Jakobs]

Hi all,

apart from my business i'm also doing a private project with LwIP at home, also using a AT91SAM7X512 with FreeRTOS.

To debug my traffic with wireshark, i've connected a hub between my PC and my network switch, my LwIP device is also connect. Because of this, my device will get all the packets for my PC, too.

Making huge network traffic like loading big websites, getting files from my server or something like this, regularily crashes my LwIP device. It got stuck until my watchdog restarts it.

Does anybody have a hint why this may happen? I'll get no assert on the debug interface - just a restart. Is it possible that all the traffic occupies the CPU in a matter that the other tasks won't run for more than 5 seconds (watchdog reset time)? I thought the "alien traffic" will be discarded right after receiving it.

Any ideas are highly appreciated ;-)

Marco