Hi,
I am looking for a way to send/receive RAW IP packets from TCP_Net library.
Currently I am using TCP_Net 7.0 BETA (supporting IPv4/IPv6 dual stack) from BSD Socket API, with CMSIS-OS/RTX running. The environment is MDK-PRO 5.14.
What I want to do is send/receive ICMPv4 and ICMPv6 packets. However, the BSD API only supports TCP and UDP only, no RAW protocol.
Is there any function to do it?
Thanks and best regards, Makoto
My suggestion is to use driver level interface routines send_frame for sending, and modify ETH_IRQHandler for receiving.
Georg
Georg,
Thanks for the reply,
I understand that calling a Ethernet-level send function and hooking driver's handler are the essential method. There is a public function "net_eth_send_frame()" declared in rt_net_lib.h so it will be possible to call from the app.
I also found the following symbols in the linker-generated .map file: net_ip4_send_frame net_ip6_send_frame net_icmp6_send
where all the symbols look like hidden functions in the Tcp_Net library. They look like IP-layer functions however they do not appear in the public header files so I can't see the correct syntax.
It would be better if KEIL made them all public putting into the header files...
Makoto