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         struct blob_attr *config;
  10 };
  11
  12 static int
  13 tunnel_set_state(struct device *dev, bool up)
  14 {
  15         struct tunnel *tun = container_of(dev, struct tunnel, dev);
  16         int ret;
  17
  18         if (up) {
  19                 ret = system_add_ip_tunnel(dev->ifname, tun->config);
  20                 if (ret != 0)
  21                         return ret;
  22         }
  23
  24         ret = tun->set_state(dev, up);
  25         if (ret || !up)
  26                 system_del_ip_tunnel(dev->ifname);
  27
  28         return ret;
  29 }
  30
  31 static struct device *
  32 tunnel_create(const char *name, struct blob_attr *attr)
  33 {
  34         struct tunnel *tun;
  35         struct device *dev;
  36
  37         tun = calloc(1, sizeof(*tun));
  38         dev = &tun->dev;
  39         tun->config = config_memdup(attr);
  40         device_init(dev, &tunnel_device_type, name);
  41         tun->set_state = dev->set_state;
  42         dev->set_state = tunnel_set_state;
  43         device_set_present(dev, true);
  44
  45         return dev;
  46 }
  47
  48 static void
  49 tunnel_free(struct device *dev)
  50 {
  51         struct tunnel *tun = container_of(dev, struct tunnel, dev);
  52
  53         free(tun);
  54 }
  55
  56 const struct device_type tunnel_device_type = {
  57         .name = "IP tunnel",
  58         .config_params = &tunnel_attr_list,
  59
  60         .create = tunnel_create,
  61         .free = tunnel_free,
  62 };
  63
  64