ipn/ipn_netdev.h

   1 #ifndef _IPN_NETDEV_H
   2 #define _IPN_NETDEV_H
   3 /*
   4  * Inter process networking (virtual distributed ethernet) module
   5  * Net devices: tap and grab
   6  *  (part of the View-OS project: wiki.virtualsquare.org)
   7  *
   8  * Copyright (C) 2007   Renzo Davoli (renzo@cs.unibo.it)
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  Due to this file being licensed under the GPL there is controversy over
  16  *  whether this permits you to write a module that #includes this file
  17  *  without placing your module under the GPL.  Please consult a lawyer for
  18  *  advice before doing this.
  19  *
  20  * WARNING: THIS CODE IS ALREADY EXPERIMENTAL
  21  *
  22  */
  23
  24 #include <linux/init.h>
  25 #include <linux/module.h>
  26 #include <linux/socket.h>
  27 #include <linux/poll.h>
  28 #include <linux/un.h>
  29 #include <linux/list.h>
  30 #include <linux/mount.h>
  31 #include <linux/etherdevice.h>
  32 #include <linux/if_bridge.h>
  33 #include <linux/version.h>
  34 #include <net/sock.h>
  35 /*#include <net/af_ipn.h>*/
  36 #include "af_ipn.h"
  37
  38 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
  39 #ifdef IPN_STEALING
  40 #define ipn_port br_port
  41 #endif
  42 #endif
  43
  44 struct net_device *ipn_netdev_alloc(struct net *net,int type, char *name, int *err);
  45 int ipn_netdev_activate(struct ipn_node *ipn_node);
  46 void ipn_netdev_close(struct ipn_node *ipn_node);
  47 void ipn_netdev_sendmsg(struct ipn_node *to,struct msgpool_item *msg);
  48 int ipn_netdev_init(void);
  49 void ipn_netdev_fini(void);
  50
  51 static inline struct ipn_node *ipn_netdev2node(struct net_device *dev)
  52 {
  53 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
  54         return (struct ipn_node *) rcu_dereference(dev->ipn_port);
  55 #else
  56         return (struct ipn_node *) rcu_dereference(dev->rx_handler_data);
  57 #endif
  58 }
  59
  60 static inline void ipn_netdevsync(void)
  61 {
  62         synchronize_rcu();
  63 }
  64 #endif