[lwip-users] [LwIP-1.4.1 + ChibiOS-2.6 + STM32F407] memp_malloc: out of memory in pool PBUF_POOL

[Adam]

Hi everyone, 

I am still getting hard error on memp_malloc after not null check.
Statistic writes this error: memp_malloc: out of memory in pool
PBUF_POOL, despite MEM PBUF_POOL: avail: 20, used 4, max 8.

Then tcpip stack stops receive anything. The call to memp_malloc is when
pbuf_malloc tries to allocate the head of the chain. pbuf_pool_bufsize is
around 1500B and the length of the incoming appears to be max 128B.

#define TCP_MSS                 (1500 - 40)
#define ETH_PAD_SIZE                    0
#define PBUF_LINK_HLEN                  (14 + ETH_PAD_SIZE)
#define PBUF_POOL_BUFSIZE LWIP_MEM_ALIGN_SIZE(TCP_MSS+40+PBUF_LINK_HLEN)
#define PBUF_POOL_SIZE                  20

This state happens after approx 15minutes of idling on my network.

Thank you for your help!

Adam





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