int main(int argc, char** argv){
Cpu& cpu = *Cpu::create_cpu();
bool end = false;
char line[512];
while (!end && !cin.eof() && cin.getline(line, 512)){
switch (line[0]){
case 'r':
cmd_reg(line, *cpu.getMips());
break;
case 'p':
cmd_pc(line, *cpu.getMips());
break;
case 'm':
cmd_mem(line, *cpu.getMem());
break;
case '.':
cmd_exe(line, cpu);
break;
case 'q':
end = true;
break;
default:
COMMAND_UNKNOWN();
};
}
Cpu::delete_cpu(&cpu);
return EXIT_SUCCESS;
};
//---------------------------------------------------------------------------------------------------------------------
int cmd_fsm(msg_info_t * info)
{
if (!info) {
dbg("Input parameter fail: Cannot proceed\n");
return -1;
}
int result = 0;
dmm_entry *bce = NULL;
struct in6_addr hw_address = EUI64_to_EUI48(info->mn_iid);
bce = dmm_cache_get(&conf.OurAddress, &hw_address);
switch (info->msg_event) {
/*
* Two possible events:
* PBU reception;
* PBA reception.
* All other received messages are discarded
*/
case hasPBU:
if (bce) {
if (info->lifetime.tv_sec > 0) {
if (IN6_ARE_ADDR_EQUAL(&bce->mn_serv_mar_addr, &info->src)) {
dbg("Same serving MAR: %x:%x:%x:%x:%x:%x:%x:%x\n", NIP6ADDR(&info->src));
cmd_refresh_binding_entry(bce, info);
cmd_reg(bce);
dmm_cache_release(bce);
} else {
dbg("PBU for an existing MN ... update serving MAR\n");
cmd_update_binding_entry(bce, info);
cmd_reg_dmm(bce);
dmm_cache_release(bce);
}
} else if (info->lifetime.tv_sec == 0 && info->lifetime.tv_nsec == 0) {
dbg("PBU with Lifetime = 0... start Location Deregistration\n");
if (IN6_ARE_ADDR_EQUAL(&info->src, &bce->mn_serv_mar_addr)) //Received PBU from serving MAG
{
dbg("Deregistration case...\n");
cmd_dereg(bce, info, 1);
dmm_cache_release(bce);
dmm_cache_delete(bce);
} else { //Received PBU from an already unregistered MAG
dbg("Deregistration for not registered MAG, doing nothing\n");
dmm_cache_release(bce);
}
}
} else {
dbg("No DMM entry found for %x:%x:%x:%x:%x:%x:%x:%x ... \n", NIP6ADDR(&info->mn_iid));
if (info->lifetime.tv_sec > 0) {
dbg("PBU for a new MN ... Location Registration starting now...\n");
bce = dmm_cache_alloc(BCE_DMM);
if (bce) {
insert_into_hnp_cache(hw_address, info->mn_prefix);
result = cmd_create_binding_entry(bce, info);
if (result >= 0)
cmd_reg(bce);
else break;
dmm_cache_add(bce);
}
} else if ((info->lifetime.tv_sec == 0) && (info->lifetime.tv_nsec == 0)) {
dbg("PBU with Lifetime = 0 for a not-registered MN. PBU discarded\n");
}
}
break;
case hasPBA:
if (bce) {
dbg("Received PBA from Previous MAR: BCE updated\n");
if (is_pba_is_response_to_last_pbu_sent(info, bce)) {
dbg("Finish Location Registration\n");
bce->PBA_flags = info->PBA_flags;
bce->lifetime.tv_nsec = 0;
if (!IN6_IS_ADDR_UNSPECIFIED(&info->mn_serv_mar_addr)) {
cmd_end_reg_dmm(bce, &info->mn_prefix);
}
}
dmm_cache_release(bce);
} else {
dbg("WARNING: Received PBA for a not registered MN\n");
}
break;
default:
dbg("No action for this event (%d) at current state!\n", info->msg_event);
}
return result;
}
