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if_vlan_var.h
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if_vlan_var.h
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/*
* Copyright 1998 Massachusetts Institute of Technology
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that both the above copyright notice and this
* permission notice appear in all copies, that both the above
* copyright notice and this permission notice appear in all
* supporting documentation, and that the name of M.I.T. not be used
* in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. M.I.T. makes
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
* SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: if_vlan_var.h,v 1.1 1998/03/18 01:40:12 wollman Exp $
*/
#ifndef _NET_IF_VLAN_VAR_H_
#define _NET_IF_VLAN_VAR_H_ 1
#ifdef KERNEL
struct ifvlan {
struct arpcom ifv_ac; /* make this an interface */
struct ifnet *ifv_p; /* parent inteface of this vlan */
struct ifv_linkmib {
int ifvm_parent;
u_int16_t ifvm_proto; /* encapsulation ethertype */
u_int16_t ifvm_tag; /* tag to apply on packets leaving if */
} ifv_mib;
};
#define ifv_if ifv_ac.ac_if
#define ifv_tag ifv_mib.ifvm_tag
#endif /* KERNEL */
struct ether_vlan_header {
u_char evl_dhost[ETHER_ADDR_LEN];
u_char evl_shost[ETHER_ADDR_LEN];
u_int16_t evl_encap_proto;
u_int16_t evl_tag;
u_int16_t evl_proto;
};
#define EVL_VLANOFTAG(tag) ((tag) & 4095)
#define EVL_PRIOFTAG(tag) (((tag) >> 13) & 7)
#define EVL_ENCAPLEN 4 /* length in octets of encapsulation */
/* When these sorts of interfaces get their own identifier... */
#define IFT_8021_VLAN IFT_PROPVIRTUAL
/* sysctl(3) tags, for compatibility purposes */
#define VLANCTL_PROTO 1
#define VLANCTL_MAX 2
/*
* Configuration structure for SIOCSETVLAN and SIOCGETVLAN ioctls.
*/
struct vlanreq {
char vlr_parent[IFNAMSIZ];
u_short vlr_tag;
};
#define SIOCSETVLAN SIOCSIFGENERIC
#define SIOCGETVLAN SIOCGIFGENERIC
#ifdef KERNEL
/* shared with if_ethersubr.c: */
extern u_int vlan_proto;
extern int vlan_input(struct ether_header *eh, struct mbuf *m);
#endif
#endif /* _NET_IF_VLAN_VAR_H_ */