Weili Yao weili_yao@trimble.com
Wed Apr 29 22:41:00 GMT 2015

Hello All,
   We have devices that are using ECOS BSD_TCP stack for networking. The device supports multiple interfaces such as Ethernet on "eth0", ppp, and Wi-Fi on "eth1" and "eth2". In the ecos.ecc, we set the CYGPKG_NET_MEM_USAGE to 640000 bytes, CYGPKG_NET_MEMPOOL_SIZE to 300000 bytes, and CYGPKG_NET_MAXSOCKETS to 100. In our LAN, we occasionally see no free net_mem_pool, and also we see no free sockets.
My questions are:
   1)   What will happen when the system runs out of the configured NET_MEM_POOL memory? Will it corrupt the network stacks?
   2)   Since we see the system sometime runs out of sockets, we intend to double CYGPKG_NET_MAXSOCKETS to 200, then how much is CYGPKG_NET_MEMPOOL_SIZE needed and how much should I set CYGPKG_NET_MEM_USAGE to?

     Any suggestions and insights are welcome!
     Thank you a lot!


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