initTeeCtx

Registers the communication callback and node information configured in dgCfg with KCAL and initializes the KCAL context.

int initTeeCtx(
        DG_Cfg dgCfg, 
        DG_TeeCtx **dgTeeCtx
)

Parameters

**Table 1** Description
Parameter	Description	Value Range	Input/Output
dgCfg	KCAL configuration	Depends on dgCfg configured in section DataGuard APIs for Configuring an Operation Set.	Input
dgTeeCtx	KCAL context	It is null as a single pointer and cannot be null as a double pointer.	Output

Return Values

Success: 0 is returned.
Failure: The error code is returned.

Error Codes

**Table 2** Error codes
Error Code	Value	Description	Remarks
DG_SUCCESS	0	Success	-
DG_ERR_MALLOC_FAIL	51	Failed to allocate memory.	-
DG_ERR_MPC_TEE_INVALID_PARAM	4501	Failed to verify the parameters.	dgCfg is null or the dgTeeCtx double pointer is null.
DG_ERR_MPC_TEE_NODEID_NOT_SET	4506	The node ID is not set.	Each node needs to set its node information.
DG_ERR_MPC_TEE_NET_API_CALLBACK_NOT_SET	4507	The network send or receive function is not registered.	The communication callback is registered by the product.
DG_ERR_MPC_TEE_FXP_BITS_NOT_SET	4509	The number of fractional bits is not set.	-
DG_ERR_MPC_TEE_INVALID_CPUID	4511	The CPU ID is invalid.	The cryptographic computing feature can run only on servers with the Kunpeng 920 or new Kunpeng 920 model.

Dependency

This API depends on the KCAL configuration in section DataGuard APIs for Configuring an Operation Set, and the configured dgCfg is used as the input parameter of this API.
teeOpts depends on the successful initialization in section DG_InitPsiOpts of the function group for the PSI operator.

#include "data_guard_mpc.h": the header file where the API declaration is stored.

Example

#include  "data_guard_mpc.h" 

     struct DG_TeeCtx *dgTee = NULL;
 
    // teeOpts is the result of the successful DG_InitPsiOpts call, and teeCfg is the KCAL configuration initialized in "DataGuard APIs for Configuring an Operation Set".
int rv = teeOpts.initTeeCtx(teeCfg, &dgTee);
    if (rv != 0) {
        return rv;
}

Running result: rv is 0.

Call the initTeeCtx API using the teeOpts output of the successful DG_InitPsiOpts call.

Parent topic: PSI Operator