pintos-os.org Git - openvswitch/blob - datapath/linux-2.6/compat-2.6/genetlink.inc

   1 /* -*- c -*- */
   2
   3 #include <net/genetlink.h>
   4 #include <linux/version.h>
   5
   6 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
   7 #include <linux/mutex.h>
   8
   9 static DEFINE_MUTEX(mc_group_mutex);
  10
  11 int genl_register_mc_group(struct genl_family *family,
  12                            struct genl_multicast_group *grp)
  13 {
  14         static int next_group = GENL_FIRST_MCGROUP;
  15
  16         mutex_lock(&mc_group_mutex);
  17         grp->id = next_group;
  18         grp->family = family;
  19
  20         if (++next_group > GENL_LAST_MCGROUP)
  21                 next_group = GENL_FIRST_MCGROUP;
  22         mutex_unlock(&mc_group_mutex);
  23
  24         return 0;
  25 }
  26 #endif /* kernel < 2.6.23 */