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Annotation of XNU/bsd/net/if_vlan_var.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  * Copyright 1998 Massachusetts Institute of Technology
        !            24:  *
        !            25:  * Permission to use, copy, modify, and distribute this software and
        !            26:  * its documentation for any purpose and without fee is hereby
        !            27:  * granted, provided that both the above copyright notice and this
        !            28:  * permission notice appear in all copies, that both the above
        !            29:  * copyright notice and this permission notice appear in all
        !            30:  * supporting documentation, and that the name of M.I.T. not be used
        !            31:  * in advertising or publicity pertaining to distribution of the
        !            32:  * software without specific, written prior permission.  M.I.T. makes
        !            33:  * no representations about the suitability of this software for any
        !            34:  * purpose.  It is provided "as is" without express or implied
        !            35:  * warranty.
        !            36:  * 
        !            37:  * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
        !            38:  * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
        !            39:  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
        !            40:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
        !            41:  * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
        !            42:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
        !            43:  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
        !            44:  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
        !            45:  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
        !            46:  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
        !            47:  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            48:  * SUCH DAMAGE.
        !            49:  *
        !            50:  */
        !            51: 
        !            52: #ifndef _NET_IF_VLAN_VAR_H_
        !            53: #define        _NET_IF_VLAN_VAR_H_     1
        !            54: 
        !            55: #ifdef KERNEL
        !            56: struct ifvlan {
        !            57:        struct  arpcom ifv_ac;  /* make this an interface */
        !            58:        struct  ifnet *ifv_p;   /* parent inteface of this vlan */
        !            59:        struct  ifv_linkmib {
        !            60:                int     ifvm_parent;
        !            61:                u_int16_t ifvm_proto; /* encapsulation ethertype */
        !            62:                u_int16_t ifvm_tag; /* tag to apply on packets leaving if */
        !            63:        }       ifv_mib;
        !            64: };
        !            65: #define        ifv_if  ifv_ac.ac_if
        !            66: #define        ifv_tag ifv_mib.ifvm_tag
        !            67: #endif /* KERNEL */
        !            68: 
        !            69: struct ether_vlan_header {
        !            70:        u_char  evl_dhost[ETHER_ADDR_LEN];
        !            71:        u_char  evl_shost[ETHER_ADDR_LEN];
        !            72:        u_int16_t evl_encap_proto;
        !            73:        u_int16_t evl_tag;
        !            74:        u_int16_t evl_proto;
        !            75: };
        !            76: 
        !            77: #define        EVL_VLANOFTAG(tag) ((tag) & 4095)
        !            78: #define        EVL_PRIOFTAG(tag) (((tag) >> 13) & 7)
        !            79: #define        EVL_ENCAPLEN    4       /* length in octets of encapsulation */
        !            80: 
        !            81: /* When these sorts of interfaces get their own identifier... */
        !            82: #define        IFT_8021_VLAN   IFT_PROPVIRTUAL
        !            83: 
        !            84: /* sysctl(3) tags, for compatibility purposes */
        !            85: #define        VLANCTL_PROTO   1
        !            86: #define        VLANCTL_MAX     2
        !            87: 
        !            88: /*
        !            89:  * Configuration structure for SIOCSETVLAN and SIOCGETVLAN ioctls.
        !            90:  */
        !            91: struct vlanreq {
        !            92:        char    vlr_parent[IFNAMSIZ];
        !            93:        u_short vlr_tag;
        !            94: };
        !            95: #define        SIOCSETVLAN     SIOCSIFGENERIC
        !            96: #define        SIOCGETVLAN     SIOCGIFGENERIC
        !            97: 
        !            98: #ifdef KERNEL
        !            99: /* shared with if_ethersubr.c: */
        !           100: extern u_int vlan_proto;
        !           101: extern int vlan_input(struct ether_header *eh, struct mbuf *m);
        !           102: #endif
        !           103: 
        !           104: #endif /* _NET_IF_VLAN_VAR_H_ */

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