tunnel.c

   1 #include "netifd.h"
   2 #include "device.h"
   3 #include "config.h"
   4 #include "system.h"
   5
   6 struct tunnel {
   7         struct device dev;
   8         device_state_cb set_state;
   9 };
  10
  11 static int
  12 tunnel_set_state(struct device *dev, bool up)
  13 {
  14         struct tunnel *tun = container_of(dev, struct tunnel, dev);
  15         int ret;
  16
  17         if (up) {
  18                 ret = system_add_ip_tunnel(dev->ifname, dev->config);
  19                 if (ret != 0)
  20                         return ret;
  21         }
  22
  23         ret = tun->set_state(dev, up);
  24         if (ret || !up)
  25                 system_del_ip_tunnel(dev->ifname);
  26
  27         return ret;
  28 }
  29
  30 static struct device *
  31 tunnel_create(const char *name, struct blob_attr *attr)
  32 {
  33         struct tunnel *tun;
  34         struct device *dev;
  35
  36         tun = calloc(1, sizeof(*tun));
  37         dev = &tun->dev;
  38         device_init(dev, &tunnel_device_type, name);
  39         tun->set_state = dev->set_state;
  40         dev->set_state = tunnel_set_state;
  41         device_set_present(dev, true);
  42
  43         return dev;
  44 }
  45
  46 static void
  47 tunnel_free(struct device *dev)
  48 {
  49         struct tunnel *tun = container_of(dev, struct tunnel, dev);
  50
  51         free(tun);
  52 }
  53
  54 const struct device_type tunnel_device_type = {
  55         .name = "IP tunnel",
  56         .config_params = &tunnel_attr_list,
  57
  58         .create = tunnel_create,
  59         .free = tunnel_free,
  60 };
  61
  62