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RL-TCPnet ping of death

Roland Beuker

The RL-ARM 3.40 TCP/IP stack TCPnet crashes with a BIG ping;

ping -t -l 1500 10.10.10.173

Crashes my MCB2300 board with TCPnet from RL-ARM 3.40. Is this a ping of death example? How can I fix this?

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  • 0 in reply to Non Keil Related

    It depends on the memory pool size. When this pool size is the default 8000, a ping with 1472 bytes works, but 1473 gives no reaction. But the board doesn't crash :-) When I lower the memory pool size to the minimum 1500 a ping with 1000 bytes 'hangs' the TCP/IP stack (no reaction anymore). The complete board crash was caused by a bug in my tcp_send routine... (I used my own buffer).

    Thanks

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  • 0 in reply to Non Keil Related

    It depends on the memory pool size. When this pool size is the default 8000, a ping with 1472 bytes works, but 1473 gives no reaction. But the board doesn't crash :-) When I lower the memory pool size to the minimum 1500 a ping with 1000 bytes 'hangs' the TCP/IP stack (no reaction anymore). The complete board crash was caused by a bug in my tcp_send routine... (I used my own buffer).

    Thanks

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