1 /* $OpenBSD: if_vlan_var.h,v 1.11 2004/02/12 18:07:29 henning 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 } ifv_mib; 56 LIST_HEAD(__vlan_mchead, vlan_mc_entry) vlan_mc_listhead; 57 LIST_ENTRY(ifvlan) ifv_list; 58 int ifv_flags; 59 }; 60 61 #define ifv_if ifv_ac.ac_if 62 #define ifv_tag ifv_mib.ifvm_tag 63 #define IFVF_PROMISC 0x01 64 #endif /* _KERNEL */ 65 66 struct ether_vlan_header { 67 u_char evl_dhost[ETHER_ADDR_LEN]; 68 u_char evl_shost[ETHER_ADDR_LEN]; 69 u_int16_t evl_encap_proto; 70 u_int16_t evl_tag; 71 u_int16_t evl_proto; 72 }; 73 74 #define EVL_VLANOFTAG(tag) ((tag) & 4095) 75 #define EVL_PRIOFTAG(tag) (((tag) >> 13) & 7) 76 #define EVL_ENCAPLEN 4 /* length in octets of encapsulation */ 77 78 /* When these sorts of interfaces get their own identifier... */ 79 #define IFT_8021_VLAN IFT_PROPVIRTUAL 80 81 /* sysctl(3) tags, for compatibility purposes */ 82 #define VLANCTL_PROTO 1 83 #define VLANCTL_MAX 2 84 85 /* 86 * Configuration structure for SIOCSETVLAN and SIOCGETVLAN ioctls. 87 */ 88 struct vlanreq { 89 char vlr_parent[IFNAMSIZ]; 90 u_short vlr_tag; 91 }; 92 #define SIOCSETVLAN SIOCSIFGENERIC 93 #define SIOCGETVLAN SIOCGIFGENERIC 94 95 #ifdef _KERNEL 96 extern int vlan_input(register struct ether_header *eh, struct mbuf *m); 97 extern int vlan_input_tag(struct mbuf *m, u_int16_t t); 98 #endif /* _KERNEL */ 99 #endif /* _NET_IF_VLAN_VAR_H_ */ 100