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TCP NET sending/receiving RAW SOCKET

Makoto K

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

Parents
  • 0 in reply to Georg D

    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

Reply
  • 0 in reply to Georg D

    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

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