[lwip-users] Two lwIP threads working fine on one core but giving error

From:

Ibtisam Tariq

Subject:

[lwip-users] Two lwIP threads working fine on one core but giving error on two separate cores

Date:

Mon, 26 Jul 2021 17:31:20 +0500

Hi,

I am creating an app by integrating lwIP with DPDK. I am using socket-level APIs. For receiving packets from the interface and processing, there are two threads.

Thread-1: Receiving packets from the interface, call pbuf_alloc to transfer packet data into pbuf and then call netif->input.

Thread-2: lwIP core thread: tcpip_thread.

If I run both threads on one core, they work fine. But if I run both on separate cores using pthread_setaffinity_np() it gives an error after ~5 minutes. The error is :

Assertion "memp sanity" failed at line 389 in ../lwip/contrib/../src/core/memp.c

Regards,

- Ibtisam

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