vde-2/src/vde_vxlan/vxlan.h

   1 /*
   2  * VDE - vde_vxlan Network emulator for vde
   3  * Copyright (C) 2014 Renzo Davoli, Alessandro Ghedini VirtualSquare
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA.
  18  */
  19
  20 #include <arpa/inet.h>
  21 #include <netinet/in.h>
  22
  23 /* from vde_switch/port.h */
  24
  25 #define ETH_ALEN 6
  26 #define ETH_HEADER_SIZE 14
  27
  28 struct eth_hdr {
  29         unsigned char dest[ETH_ALEN];
  30         unsigned char src[ETH_ALEN];
  31         unsigned char proto[2];
  32 };
  33
  34 struct eth_pkt {
  35         struct eth_hdr header;
  36         unsigned char data[1504]; /*including trailer, IF ANY */
  37 };
  38
  39 struct vxlan_pkt {
  40         unsigned char flags;
  41         unsigned char priv1[3];
  42         unsigned char id[3];
  43         unsigned char priv2[1];
  44         struct eth_pkt pkt;
  45 };
  46
  47 extern int       vxlan_id;
  48 extern in_addr_t vxlan_addr;
  49 extern int       vxlan_port;
  50 extern int       vxlan_mttl;
  51
  52 void vxlan_open(struct pollfd *pfd);
  53 void vxlan_close();
  54
  55 void vxlan_process();
  56 void vxlan_send(in_addr_t addr, struct vxlan_pkt *p, size_t len);