IABSD.fr/src/sys/net/if_vxlan.h

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• Author : reyk
  Date : 2016-09-03 13:46:57
  Hash : 26334ce3
  Message : Add support for a multipoint-to-multipoint mode in vxlan(4). In this mode, vxlan(4) must be configured to accept any virtual network identifier with "vnetid any" and added to a bridge(4) or switch(4). This way the driver will dynamically learn the tunnel endpoints and their vnetids for the responses and can be used to dynamically bridge between VXLANs. It is also being used in combination with switch(4) and the OpenFlow tunnel classifiers. With input from yasuoka@ goda@ OK deraadt@ dlg@

• sys/net/if_vxlan.h

• /*	$OpenBSD: if_vxlan.h,v 1.11 2016/09/03 13:46:57 reyk Exp $	*/
  
  /*
   * Copyright (c) 2013 Reyk Floeter <reyk@openbsd.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #ifndef _NET_VXLAN_H
  #define _NET_VXLAN_H
  
  #define VXLANMTU		1492
  #define VXLAN_HDRLEN		8
  #define VXLAN_PORT		4789
  
  struct vxlan_header {
  	u_int32_t		vxlan_flags;
  #define	VXLAN_FLAGS_VNI		0x08000000
  #define	VXLAN_RESERVED1		0xf7ffffff
  	u_int32_t		vxlan_id;
  #define VXLAN_VNI		0xffffff00
  #define VXLAN_VNI_S		8
  #define VXLAN_RESERVED2		0x000000ff
  } __packed;
  
  #define VXLAN_VNI_MAX		0x00ffffff	/* 24bit vnetid */
  #define VXLAN_VNI_MIN		0x00000000	/* 24bit vnetid */
  #define VXLAN_VNI_UNSET		0x01ffffff	/* used internally */
  #define VXLAN_VNI_ANY		-1ULL		/* -1 accept any vnetid */
  
  struct vxlanudphdr {
  	struct udphdr		vu_u;
  	struct vxlan_header	vu_v;
  } __packed;
  
  #ifdef _KERNEL
  extern int vxlan_enable;
  
  int		 vxlan_lookup(struct mbuf *, struct udphdr *, int,
  		    struct sockaddr *, struct sockaddr *);
  struct sockaddr *vxlan_tag_find(struct mbuf *);
  struct sockaddr	*vxlan_tag_get(struct mbuf *, int);
  void		 vxlan_tag_delete(struct mbuf *);
  
  #endif /* _KERNEL */
  
  #endif /* _NET_VXLAN_H */