IPC@CHIP Documentation - SC12 @CHIP-RTOS V1.10

Parameters
AH
ES:DI
0x7A (= IP_USER_CB)
Pointer to IP callback function (or set to null to remove a previously installed callback)
Return Value
Comments
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DX: 0, AX 0 success
The application programmer can implement a function of the type (Borland C):
typedef int (huge *MyIpCallbackFuncPtr)(
IpUserCallbackInfo_t far *ipInfo );
If a function of this type is installed by the user, the TCP/IP stack will call this function for any incoming IP
packet. Inside of this function the user is able to check the given IP parameters (which are available through
the IpUserCallbackInfo_t parameter) and decide whether the TCP/IP stack should process this packet or
ignore it.
If the callback function returns -1 the incoming packet will be ignored by the TCP/IP stack.
To remove the callback function, this API call must be called with a null pointer in ES:DI. Do not forget to
uninstall the callback, if your application exits!
Interrupt 0xAC service 0x7B: ARP_USER_CB, Install ARP callback function
Parameters
AH
ES:DI
This function allows the application programmer to install an ARP callback function.
0x7B (= ARP_USER_CB)
Pointer to ARP callback function (or set to null to remove a previously installed callback)
Return Value
Comments
DX: 0, AX 0 Success
The application programmer can implement a function from the type described below:
typedef int (huge *MyArpCallbackFuncPtr)(
ArpUserCallbackInfo_t far *arpInfo );
If a function of this type is installed by the user, the TCP/IP stack will call this function for any incoming ARP
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