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                         perror("add_ip_tunnel");
  22                         return ret;
  23                 }
  24         }
  25
  26         ret = tun->set_state(dev, up);
  27         if (ret || !up)
  28                 system_del_ip_tunnel(dev->ifname);
  29
  30         return ret;
  31 }
  32
  33 static struct device *
  34 tunnel_create(const char *name, struct blob_attr *attr)
  35 {
  36         struct tunnel *tun;
  37         struct device *dev;
  38
  39         tun = calloc(1, sizeof(*tun));
  40         dev = &tun->dev;
  41         tun->config = config_memdup(attr);
  42         device_init(dev, &tunnel_device_type, name);
  43         tun->set_state = dev->set_state;
  44         dev->set_state = tunnel_set_state;
  45         device_set_present(dev, true);
  46
  47         return dev;
  48 }
  49
  50 static void
  51 tunnel_free(struct device *dev)
  52 {
  53         struct tunnel *tun = container_of(dev, struct tunnel, dev);
  54
  55         free(tun);
  56 }
  57
  58 const struct device_type tunnel_device_type = {
  59         .name = "IP tunnel",
  60         .config_params = &tunnel_attr_list,
  61
  62         .create = tunnel_create,
  63         .free = tunnel_free,
  64 };
  65
  66