1 /* $OpenBSD: pipex.h,v 1.8 2011/04/02 11:52:44 dlg Exp $ */ 2 3 /* 4 * Copyright (c) 2009 Internet Initiative Japan Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef NET_PIPEX_H 30 #define NET_PIPEX_H 1 31 32 #define PIPEX_ENABLE 1 33 #define PIPEX_DISABLE 0 34 35 #define PIPEX_PROTO_L2TP 0x0001 /* protocol L2TP */ 36 #define PIPEX_PROTO_PPTP 0x0002 /* protocol pptp */ 37 #define PIPEX_PROTO_PPPOE 0x0003 /* protocol pppoe */ 38 #define PIPEX_MAX_LISTREQ 128 /* list request size */ 39 #define PIPEX_MPPE_KEYLEN 16 40 41 /* pipex_mppe */ 42 struct pipex_mppe_req { 43 int16_t stateless; /* mppe key mode */ 44 int16_t keylenbits; /* mppe key length(in bits)*/ 45 u_char master_key[PIPEX_MPPE_KEYLEN]; /* mppe mastter key */ 46 }; 47 48 /* pppac ip-extension forwarded statistics */ 49 struct pipex_statistics { 50 uint32_t ipackets; /* tunnel to network */ 51 uint32_t ierrors; /* tunnel to network */ 52 uint64_t ibytes; /* tunnel to network */ 53 uint32_t opackets; /* network to tunnel */ 54 uint32_t oerrors; /* network to tunnel */ 55 uint64_t obytes; /* network to tunnel */ 56 57 uint32_t idle_time; /* idle timer */ 58 }; 59 60 struct pipex_session_req { 61 int pr_protocol; /* tunnel protocol */ 62 /* u_int pr_rdomain; */ /* rdomain id */ 63 uint16_t pr_session_id; /* session-id */ 64 uint16_t pr_peer_session_id; /* peer's session-id */ 65 uint32_t pr_ppp_flags; /* PPP configuration flags */ 66 #define PIPEX_PPP_ACFC_ACCEPTED 0x00000001 67 #define PIPEX_PPP_PFC_ACCEPTED 0x00000002 68 #define PIPEX_PPP_ACFC_ENABLED 0x00000004 69 #define PIPEX_PPP_PFC_ENABLED 0x00000008 70 #define PIPEX_PPP_MPPE_ACCEPTED 0x00000010 71 #define PIPEX_PPP_MPPE_ENABLED 0x00000020 72 #define PIPEX_PPP_MPPE_REQUIRED 0x00000040 73 #define PIPEX_PPP_HAS_ACF 0x00000080 74 #define PIPEX_PPP_ADJUST_TCPMSS 0x00000100 75 int8_t pr_ccp_id; /* CCP current packet id */ 76 int pr_ppp_id; /* PPP Id. */ 77 uint16_t pr_peer_mru; /* Peer's MRU */ 78 uint16_t pr_timeout_sec; /* Idle Timer */ 79 80 struct in_addr pr_ip_srcaddr; /* local framed IP-Address */ 81 struct in_addr pr_ip_address; /* framed IP-Address */ 82 struct in_addr pr_ip_netmask; /* framed IP-Netmask */ 83 struct sockaddr_in6 pr_ip6_address; /* framed IPv6-Address */ 84 int pr_ip6_prefixlen; /* framed IPv6-Prefixlen */ 85 union { 86 struct { 87 uint32_t snd_nxt; /* send next */ 88 uint32_t rcv_nxt; /* receive next */ 89 uint32_t snd_una; /* unacked */ 90 uint32_t rcv_acked; /* recv acked */ 91 int winsz; /* window size */ 92 int maxwinsz; /* max window size */ 93 int peer_maxwinsz; /* peer's max window size */ 94 } pptp; 95 struct { 96 /* select protocol options: 1 for enable */ 97 uint32_t option_flags; 98 #define PIPEX_L2TP_USE_SEQUENCING 0x00000001 99 100 /* session keys */ 101 uint16_t tunnel_id; /* our tunnel-id */ 102 uint16_t peer_tunnel_id;/* peer's tunnel-id */ 103 uint32_t ns_nxt; /* send next */ 104 uint32_t nr_nxt; /* receive next */ 105 uint32_t ns_una; /* unacked */ 106 uint32_t nr_acked; /* recv acked */ 107 } l2tp; 108 struct { 109 char over_ifname[IF_NAMESIZE]; /* ethernet i/f name */ 110 } pppoe; 111 } pr_proto; 112 struct sockaddr_storage peer_address; 113 struct sockaddr_storage local_address; 114 struct pipex_mppe_req pr_mppe_recv; 115 struct pipex_mppe_req pr_mppe_send; 116 }; 117 118 struct pipex_session_stat_req { 119 int psr_protocol; /* tunnel protocol */ 120 uint16_t psr_session_id; /* session-id */ 121 struct pipex_statistics psr_stat; /* statistics */ 122 }; 123 #define pipex_session_close_req pipex_session_stat_req 124 #define pcr_protocol psr_protocol 125 #define pcr_session_id psr_session_id 126 #define pcr_stat psr_stat 127 128 struct pipex_session_list_req { 129 uint8_t plr_flags; 130 #define PIPEX_LISTREQ_NONE 0x00 131 #define PIPEX_LISTREQ_MORE 0x01 132 int plr_ppp_id_count; /* count of PPP id */ 133 int plr_ppp_id[PIPEX_MAX_LISTREQ]; /* PPP id */ 134 }; 135 136 struct pipex_session_config_req { 137 int pcr_protocol; /* tunnel protocol */ 138 uint16_t pcr_session_id; /* session-id */ 139 int pcr_ip_forward; /* ip_forwarding on/off */ 140 }; 141 142 /* for pppx(4) */ 143 struct pppx_hdr { 144 u_int32_t pppx_proto; 145 u_int32_t pppx_id; 146 }; 147 148 struct pipex_session_descr_req { 149 int pdr_protocol; /* tunnel protocol */ 150 uint16_t pdr_session_id; /* session-id */ 151 char pdr_descr[IFDESCRSIZE]; /* description */ 152 }; 153 154 155 /* PIPEX ioctls */ 156 #define PIPEXSMODE _IOW ('p', 1, int) 157 #define PIPEXGMODE _IOR ('p', 2, int) 158 #define PIPEXASESSION _IOW ('p', 3, struct pipex_session_req) 159 #define PIPEXDSESSION _IOWR('p', 4, struct pipex_session_close_req) 160 #define PIPEXCSESSION _IOW ('p', 5, struct pipex_session_config_req) 161 #define PIPEXGSTAT _IOWR('p', 6, struct pipex_session_stat_req) 162 #define PIPEXGCLOSED _IOR ('p', 7, struct pipex_session_list_req) 163 #define PIPEXSIFDESCR _IOW ('p', 8, struct pipex_session_descr_req) 164 165 #ifdef _KERNEL 166 167 struct pipex_session; 168 169 /* pipex context for a interface. */ 170 struct pipex_iface_context { 171 struct ifnet *ifnet_this; /* outer interface */ 172 u_int pipexmode; /* pppac ipex mode */ 173 /* virtual pipex_session entry for multicast routing */ 174 struct pipex_session *multicast_session; 175 }; 176 #include <sys/cdefs.h> 177 __BEGIN_DECLS 178 void pipex_init (void); 179 void pipex_iface_init (struct pipex_iface_context *, struct ifnet *); 180 void pipex_iface_start (struct pipex_iface_context *); 181 void pipex_iface_stop (struct pipex_iface_context *); 182 183 int pipex_notify_close_session(struct pipex_session *session); 184 int pipex_notify_close_session_all(void); 185 186 struct mbuf *pipex_output (struct mbuf *, int, int, struct pipex_iface_context *); 187 struct pipex_session *pipex_pppoe_lookup_session (struct mbuf *); 188 struct pipex_session *pipex_pppoe_lookup_session (struct mbuf *); 189 struct mbuf *pipex_pppoe_input (struct mbuf *, struct pipex_session *); 190 struct pipex_session *pipex_pptp_lookup_session (struct mbuf *); 191 struct mbuf *pipex_pptp_input (struct mbuf *, struct pipex_session *); 192 struct pipex_session *pipex_pptp_userland_lookup_session_ipv4 (struct mbuf *, struct in_addr); 193 struct pipex_session *pipex_pptp_userland_lookup_session_ipv6 (struct mbuf *, struct in6_addr); 194 struct mbuf *pipex_pptp_userland_output (struct mbuf *, struct pipex_session *); 195 struct pipex_session *pipex_l2tp_lookup_session (struct mbuf *, int); 196 struct mbuf *pipex_l2tp_input (struct mbuf *, int off, struct pipex_session *); 197 struct pipex_session *pipex_l2tp_userland_lookup_session_ipv4 (struct mbuf *, struct in_addr); 198 struct pipex_session *pipex_l2tp_userland_lookup_session_ipv6 (struct mbuf *, struct in6_addr); 199 struct mbuf *pipex_l2tp_userland_output (struct mbuf *, struct pipex_session *); 200 int pipex_ioctl (struct pipex_iface_context *, int, caddr_t); 201 __END_DECLS 202 203 #endif /* _KERNEL */ 204 #endif 205