src/pcap.c

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * By Daniel Borkmann <daniel@netsniff-ng.org>
   4  * Copyright 2011 Daniel Borkmann.
   5  * Subject to the GPL.
   6  */
   7
   8 #include <errno.h>
   9 #include "pcap.h"
  10 #include "compiler.h"
  11
  12 struct pcap_file_ops *pcap_ops[PCAP_OPS_SIZ] = {0};
  13
  14 int pcap_ops_group_register(struct pcap_file_ops *ops,
  15                             enum pcap_ops_groups group)
  16 {
  17         if (!ops)
  18                 return -EINVAL;
  19         if (pcap_ops[group])
  20                 return -EBUSY;
  21         pcap_ops[group] = ops;
  22         barrier();
  23         return 0;
  24 }
  25
  26 void pcap_ops_group_unregister(enum pcap_ops_groups group)
  27 {
  28         pcap_ops[group] = NULL;
  29 }
  30