hv_vm.c

思科路由器仿真器,用来仿7200系列得,可以在电脑上模拟路由器

/*
 * Cisco router simulation platform.
 * Copyright (c) 2006 Christophe Fillot ([e-mail])
 *
 * Hypervisor generic VM routines.
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <signal.h>
#include <fcntl.h>
#include <errno.h>
#include <assert.h>
#include <stdarg.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <pthread.h>

#include "cpu.h"
#include "vm.h"
#include "dynamips.h"
#include "device.h"
#include "dev_c7200.h"
#include "dev_vtty.h"
#include "utils.h"
#include "base64.h"
#include "net.h"
#include "atm.h"
#include "frame_relay.h"
#include "crc.h"
#include "net_io.h"
#include "net_io_bridge.h"
#ifdef GEN_ETH
#include "gen_eth.h"
#endif
#include "registry.h"
#include "hypervisor.h"

/* Find the specified CPU */
static cpu_gen_t *find_cpu(hypervisor_conn_t *conn,vm_instance_t *vm,
                           u_int cpu_id)
{
   cpu_gen_t *cpu;

   cpu = cpu_group_find_id(vm->cpu_group,cpu_id);

   if (!cpu) {
      vm_release(vm);
      hypervisor_send_reply(conn,HSC_ERR_BAD_OBJ,1,"Bad CPU specified");
      return NULL;
   }
   
   return cpu;
}

/* Create a VM instance */
static int cmd_create(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = vm_create_instance(argv[0],atoi(argv[1]),argv[2]))) {
      hypervisor_send_reply(conn,HSC_ERR_CREATE,1,
                            "unable to create VM instance '%s'",
                            argv[0]);
      return(-1);
   }

   vm->vtty_con_type = VTTY_TYPE_NONE;
   vm->vtty_aux_type = VTTY_TYPE_NONE;
   
   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"VM '%s' created",argv[0]);
   return(0);
}

/* Delete a VM instance */
static int cmd_delete(hypervisor_conn_t *conn,int argc,char *argv[])
{
   int res;

   res = vm_delete_instance(argv[0]);

   if (res == 1) {
      hypervisor_send_reply(conn,HSC_INFO_OK,1,"VM '%s' deleted",argv[0]);
   } else {
      hypervisor_send_reply(conn,HSC_ERR_DELETE,1,
                            "unable to delete VM '%s'",argv[0]);
   }

   return(res);
}

/* Start a VM instance */
static int cmd_start(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   if (vm->vtty_con_type == VTTY_TYPE_NONE) {
      hypervisor_send_reply(conn,HSC_INFO_MSG,0,
                            "Warning: no console port defined for "
                            "VM '%s'",argv[0]);
   }

   if (vm_init_instance(vm) == -1) {
      vm_release(vm);
      hypervisor_send_reply(conn,HSC_ERR_START,1,
                            "unable to start VM instance '%s'",
                            argv[0]);
      return(-1);
   }
   
   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"VM '%s' started",argv[0]);
   return(0);
}

/* Stop a VM instance */
static int cmd_stop(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   if (vm_stop_instance(vm) == -1) {
      vm_release(vm);
      hypervisor_send_reply(conn,HSC_ERR_STOP,1,
                            "unable to stop VM instance '%s'",
                            argv[0]);
      return(-1);
   }
   
   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"VM '%s' stopped",argv[0]);
   return(0);
}

/* Set debugging level */
static int cmd_set_debug_level(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   vm->debug_level = atoi(argv[1]);

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"O",argv[0]);
   return(0);
}

/* Set IOS image filename */
static int cmd_set_ios(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   if (vm_ios_set_image(vm,argv[1]) == -1) {
      vm_release(vm);
      hypervisor_send_reply(conn,HSC_ERR_CREATE,1,
                            "unable to store IOS image name for router '%s'",
                            argv[0]);
      return(-1);
   }

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"IOS image set for '%s'",argv[0]);
   return(0);
}

/* Set IOS configuration filename to load at startup */
static int cmd_set_config(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   if (vm_ios_set_config(vm,argv[1]) == -1) {
      vm_release(vm);
      hypervisor_send_reply(conn,HSC_ERR_CREATE,1,
                            "unable to store IOS config for router '%s'",
                            argv[0]);
      return(-1);
   }

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"IOS config file set for '%s'",
                         argv[0]);
   return(0);
}

/* Set RAM size */
static int cmd_set_ram(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   vm->ram_size = atoi(argv[1]);

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Set NVRAM size */
static int cmd_set_nvram(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   vm->nvram_size = atoi(argv[1]);

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Enable/disable use of a memory-mapped file to simulate RAM */
static int cmd_set_ram_mmap(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   vm->ram_mmap = atoi(argv[1]);

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Enable/disable use of sparse memory */
static int cmd_set_sparse_mem(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   vm->sparse_mem = atoi(argv[1]);

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Set the clock divisor */
static int cmd_set_clock_divisor(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;
   u_int clock_div;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   if ((clock_div = atoi(argv[1])) != 0)
      vm->clock_divisor = clock_div;

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Enable/disable use of block direct jump (compatibility option) */
static int cmd_set_blk_direct_jump(hypervisor_conn_t *conn,
                                   int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   vm->exec_blk_direct_jump = atoi(argv[1]);

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Set the idle PC */
static int cmd_set_idle_pc(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   vm->idle_pc = strtoull(argv[1],NULL,0);

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Set the idle PC value when the CPU is online */
static int cmd_set_idle_pc_online(hypervisor_conn_t *conn,
                                  int argc,char *argv[])
{
   vm_instance_t *vm;
   cpu_gen_t *cpu;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   if (!(cpu = find_cpu(conn,vm,atoi(argv[1]))))
      return(-1);

   cpu->set_idle_pc(cpu,strtoull(argv[2],NULL,0));

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Get the idle PC proposals */
static int cmd_get_idle_pc_prop(hypervisor_conn_t *conn,int argc,char *argv[])
{  
   vm_instance_t *vm;
   cpu_gen_t *cpu;
   int i;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   if (!(cpu = find_cpu(conn,vm,atoi(argv[1]))))
      return(-1);

   cpu->get_idling_pc(cpu);

   for(i=0;i<cpu->idle_pc_prop_count;i++) {
      hypervisor_send_reply(conn,HSC_INFO_MSG,0,"0x%llx [%d]",
                            cpu->idle_pc_prop[i].pc,
                            cpu->idle_pc_prop[i].count);
   }

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Dump the idle PC proposals */
static int cmd_show_idle_pc_prop(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;
   cpu_gen_t *cpu;
   int i;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   if (!(cpu = find_cpu(conn,vm,atoi(argv[1]))))
      return(-1);

   for(i=0;i<cpu->idle_pc_prop_count;i++) {
      hypervisor_send_reply(conn,HSC_INFO_MSG,0,"0x%llx [%d]",
                            cpu->idle_pc_prop[i].pc,
                            cpu->idle_pc_prop[i].count);
   }

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Set CPU idle max value */
static int cmd_set_idle_max(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;
   cpu_gen_t *cpu;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   if (!(cpu = find_cpu(conn,vm,atoi(argv[1]))))
      return(-1);

   cpu->idle_max = atoi(argv[2]);

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Set CPU idle sleep time value */
static int cmd_set_idle_sleep_time(hypervisor_conn_t *conn,
                                   int argc,char *argv[])
{
   vm_instance_t *vm;
   cpu_gen_t *cpu;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   if (!(cpu = find_cpu(conn,vm,atoi(argv[1]))))
      return(-1);

   cpu->idle_sleep_time = atoi(argv[2]);

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Show info about potential timer drift */
static int cmd_show_timer_drift(hypervisor_conn_t *conn,
                                int argc,char *argv[])
{
   vm_instance_t *vm;
   cpu_gen_t *cpu;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   if (!(cpu = find_cpu(conn,vm,atoi(argv[1]))))
      return(-1);

   switch(cpu->type) {
      case CPU_TYPE_MIPS64:
         hypervisor_send_reply(conn,HSC_INFO_MSG,0,"Timer Drift: %u",
                               CPU_MIPS64(cpu)->timer_drift);

         hypervisor_send_reply(conn,HSC_INFO_MSG,0,"Pending Timer IRQ: %u",
                               CPU_MIPS64(cpu)->timer_irq_pending);
         break;

     case CPU_TYPE_PPC32:
         hypervisor_send_reply(conn,HSC_INFO_MSG,0,"Timer Drift: %u",
                               CPU_PPC32(cpu)->timer_drift);

         hypervisor_send_reply(conn,HSC_INFO_MSG,0,"Pending Timer IRQ: %u",
                               CPU_PPC32(cpu)->timer_irq_pending);
         break;
   }

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Set the exec area size */
static int cmd_set_exec_area(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   vm->exec_area_size = atoi(argv[1]);

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Set ghost RAM file */
static int cmd_set_ghost_file(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   vm->ghost_ram_filename = strdup(argv[1]);

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Set ghost RAM status */
static int cmd_set_ghost_status(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   vm->ghost_status = atoi(argv[1]);

   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}


/* Set PCMCIA ATA disk0 size */
static int cmd_set_disk0(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   vm->pcmcia_disk_size[0] = atoi(argv[1]);
   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Set PCMCIA ATA disk1 size */
static int cmd_set_disk1(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;

   if (!(vm = hypervisor_find_object(conn,argv[0],OBJ_TYPE_VM)))
      return(-1);

   vm->pcmcia_disk_size[1] = atoi(argv[1]);
   vm_release(vm);
   hypervisor_send_reply(conn,HSC_INFO_OK,1,"OK");
   return(0);
}

/* Set the config register used at startup */
static int cmd_set_conf_reg(hypervisor_conn_t *conn,int argc,char *argv[])
{
   vm_instance_t *vm;