1 /* $OpenBSD: if_vlan_var.h,v 1.18 2006/02/09 00:05:55 reyk Exp $ */
2
3 /*
4 * Copyright 1998 Massachusetts Institute of Technology
5 *
6 * Permission to use, copy, modify, and distribute this software and
7 * its documentation for any purpose and without fee is hereby
8 * granted, provided that both the above copyright notice and this
9 * permission notice appear in all copies, that both the above
10 * copyright notice and this permission notice appear in all
11 * supporting documentation, and that the name of M.I.T. not be used
12 * in advertising or publicity pertaining to distribution of the
13 * software without specific, written prior permission. M.I.T. makes
14 * no representations about the suitability of this software for any
15 * purpose. It is provided "as is" without express or implied
16 * warranty.
17 *
18 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
19 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
20 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
22 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
25 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
26 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
28 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $FreeBSD: src/sys/net/if_vlan_var.h,v 1.3 1999/08/28 00:48:24 peter Exp $
32 */
33
34 #ifndef _NET_IF_VLAN_VAR_H_
35 #define _NET_IF_VLAN_VAR_H_
36
37 #ifdef _KERNEL
38 #define mc_enm mc_u.mcu_enm
39
40 struct vlan_mc_entry {
41 LIST_ENTRY(vlan_mc_entry) mc_entries;
42 union {
43 struct ether_multi *mcu_enm;
44 } mc_u;
45 struct sockaddr_storage mc_addr;
46 };
47
48 struct ifvlan {
49 struct arpcom ifv_ac; /* make this an interface */
50 struct ifnet *ifv_p; /* parent interface of this vlan */
51 struct ifv_linkmib {
52 int ifvm_parent;
53 u_int16_t ifvm_proto; /* encapsulation ethertype */
54 u_int16_t ifvm_tag; /* tag to apply on packets leaving if */
55 u_int16_t ifvm_prio; /* prio to apply on packet leaving if */
56 } ifv_mib;
57 LIST_HEAD(__vlan_mchead, vlan_mc_entry) vlan_mc_listhead;
58 LIST_ENTRY(ifvlan) ifv_list;
59 int ifv_flags;
60 void *lh_cookie;
61 void *dh_cookie;
62 };
63
64 #define ifv_if ifv_ac.ac_if
65 #define ifv_tag ifv_mib.ifvm_tag
66 #define ifv_prio ifv_mib.ifvm_prio
67 #define IFVF_PROMISC 0x01
68 #endif /* _KERNEL */
69
70 struct ether_vlan_header {
71 u_char evl_dhost[ETHER_ADDR_LEN];
72 u_char evl_shost[ETHER_ADDR_LEN];
73 u_int16_t evl_encap_proto;
74 u_int16_t evl_tag;
75 u_int16_t evl_proto;
76 };
77
78 #define EVL_VLID_MASK 0x0FFF
79 #define EVL_VLANOFTAG(tag) ((tag) & EVL_VLID_MASK)
80 #define EVL_PRIOFTAG(tag) (((tag) >> 13) & 7)
81 #define EVL_ENCAPLEN 4 /* length in octets of encapsulation */
82 #define EVL_PRIO_MAX 7
83 #define EVL_PRIO_BITS 13
84
85 /* sysctl(3) tags, for compatibility purposes */
86 #define VLANCTL_PROTO 1
87 #define VLANCTL_MAX 2
88
89 /*
90 * Configuration structure for SIOCSETVLAN and SIOCGETVLAN ioctls.
91 */
92 struct vlanreq {
93 char vlr_parent[IFNAMSIZ];
94 u_short vlr_tag;
95 };
96 #define SIOCSETVLAN SIOCSIFGENERIC
97 #define SIOCGETVLAN SIOCGIFGENERIC
98
99 #ifdef _KERNEL
100 extern int vlan_input(struct ether_header *eh, struct mbuf *m);
101 #endif /* _KERNEL */
102 #endif /* _NET_IF_VLAN_VAR_H_ */