/**
Get the NIC's configure information from the IP4 configure variable.
It will remove the invalid variable.
@param Instance The IP4 CONFIG instance.
@return NULL if no configure for the NIC in the variable, or it is invalid.
Otherwise the pointer to the NIC's IP configure parameter will be returned.
**/
NIC_IP4_CONFIG_INFO *
EfiNicIp4ConfigGetInfo (
IN IP4_CONFIG_INSTANCE *Instance
)
{
NIC_IP4_CONFIG_INFO *NicConfig;
//
// Read the configuration parameter for this NIC from
// the EFI variable
//
NicConfig = Ip4ConfigReadVariable (Instance);
if (NicConfig == NULL) {
return NULL;
}
//
// Validate the configuration, if the configuration is invalid,
// remove it from the variable.
//
if (!Ip4ConfigIsValid (NicConfig)) {
Ip4ConfigWriteVariable (Instance, NULL);
FreePool (NicConfig);
NicConfig = NULL;
}
return NicConfig;
}
/**
Get the NIC's configure information from the IP4 configure variable.
It will remove the invalid variable.
@param NicAddr The NIC to check
@return NULL if no configure for the NIC in the variable, or it is invalid.
Otherwise the pointer to the NIC's IP configure parameter will be returned.
**/
NIC_IP4_CONFIG_INFO *
Ip4ConfigGetNicInfo (
IN NIC_ADDR *NicAddr
)
{
IP4_CONFIG_VARIABLE *Variable;
IP4_CONFIG_VARIABLE *NewVariable;
NIC_IP4_CONFIG_INFO *Config;
//
// Read the configuration parameter for this NicAddr from
// the EFI variable
//
Variable = Ip4ConfigReadVariable ();
if (Variable == NULL) {
return NULL;
}
Config = Ip4ConfigFindNicVariable (Variable, NicAddr);
if (Config == NULL) {
FreePool (Variable);
return NULL;
}
//
// Validate the configuration, if the configuration is invalid,
// remove it from the variable.
//
if (!Ip4ConfigIsValid (Config)) {
NewVariable = Ip4ConfigModifyVariable (Variable, &Config->NicAddr, NULL);
Ip4ConfigWriteVariable (NewVariable);
if (NewVariable != NULL) {
FreePool (NewVariable);
};
FreePool (Config);
Config = NULL;
}
FreePool (Variable);
return Config;
}
