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/* $OpenBSD: pipex.h,v 1.16 2012/12/05 23:20:23 deraadt Exp $ */
/*
* Copyright (c) 2009 Internet Initiative Japan Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 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.
*/
#ifndef NET_PIPEX_H
#define NET_PIPEX_H 1
/*
* Names for pipex sysctl objects
*/
#define PIPEXCTL_ENABLE 1
#define PIPEXCTL_MAXID 2
#define PIPEXCTL_NAMES { \
{ 0, 0 }, \
{ "enable", CTLTYPE_INT }, \
}
#define PIPEXCTL_VARS { \
NULL, \
&pipex_enable \
NULL \
}
#define PIPEX_PROTO_L2TP 1 /* protocol L2TP */
#define PIPEX_PROTO_PPTP 2 /* protocol PPTP */
#define PIPEX_PROTO_PPPOE 3 /* protocol PPPoE */
#define PIPEX_MAX_LISTREQ 128 /* list request size */
#define PIPEX_MPPE_KEYLEN 16
/* pipex_mppe */
struct pipex_mppe_req {
int16_t stateless; /* mppe key mode.
1 for stateless */
int16_t keylenbits; /* mppe key length(in bits)*/
u_char master_key[PIPEX_MPPE_KEYLEN]; /* mppe mastter key */
};
/* pipex statistics */
struct pipex_statistics {
uint32_t ipackets; /* packets received from tunnel */
uint32_t ierrors; /* error packets received from tunnel */
uint64_t ibytes; /* number of received bytes from tunnel */
uint32_t opackets; /* packets sent to tunnel */
uint32_t oerrors; /* error packets on sending to tunnel */
uint64_t obytes; /* number of sent bytes to tunnel */
uint32_t idle_time; /* idle time in seconds */
};
struct pipex_session_req {
int pr_protocol; /* tunnel protocol */
/* u_int pr_rdomain; */ /* rdomain id */
uint16_t pr_session_id; /* session-id */
uint16_t pr_peer_session_id; /* peer's session-id */
uint32_t pr_ppp_flags; /* PPP configuration flags */
#define PIPEX_PPP_ACFC_ACCEPTED 0x0001 /* ACFC accepted */
#define PIPEX_PPP_PFC_ACCEPTED 0x0002 /* PFC accepted */
#define PIPEX_PPP_ACFC_ENABLED 0x0004 /* ACFC enabled */
#define PIPEX_PPP_PFC_ENABLED 0x0008 /* PFC enabled */
#define PIPEX_PPP_MPPE_ACCEPTED 0x0010 /* MPPE accepted */
#define PIPEX_PPP_MPPE_ENABLED 0x0020 /* MPPE enabled */
#define PIPEX_PPP_MPPE_REQUIRED 0x0040 /* MPPE is required */
#define PIPEX_PPP_HAS_ACF 0x0080 /* has ACF */
#define PIPEX_PPP_ADJUST_TCPMSS 0x0100 /* do tcpmss adjustment */
#define PIPEX_PPP_INGRESS_FILTER 0x0200 /* do ingress filter */
int8_t pr_ccp_id; /* CCP current packet id */
int pr_ppp_id; /* PPP Id. */
uint16_t pr_peer_mru; /* Peer's MRU */
uint16_t pr_timeout_sec; /* Idle Timer */
struct in_addr pr_ip_srcaddr; /* local framed IP-Address */
struct in_addr pr_ip_address; /* framed IP-Address */
struct in_addr pr_ip_netmask; /* framed IP-Netmask */
struct sockaddr_in6 pr_ip6_address; /* framed IPv6-Address */
int pr_ip6_prefixlen; /* framed IPv6-Prefixlen */
union {
struct {
uint32_t snd_nxt; /* send next */
uint32_t rcv_nxt; /* receive next */
uint32_t snd_una; /* unacked */
uint32_t rcv_acked; /* recv acked */
int winsz; /* window size */
int maxwinsz; /* max window size */
int peer_maxwinsz; /* peer's max window size */
} pptp;
struct {
uint32_t option_flags;
#define PIPEX_L2TP_USE_SEQUENCING 0x00000001
uint16_t tunnel_id; /* our tunnel-id */
uint16_t peer_tunnel_id;/* peer's tunnel-id */
uint32_t ns_nxt; /* send next */
uint32_t nr_nxt; /* receive next */
uint32_t ns_una; /* unacked */
uint32_t nr_acked; /* recv acked */
uint32_t ipsecflowinfo; /* IPsec flow id for NAT-T */
} l2tp;
struct {
char over_ifname[IF_NAMESIZE]; /* ethernet ifname */
} pppoe;
} pr_proto;
struct sockaddr_storage pr_peer_address; /* peer address of tunnel */
struct sockaddr_storage pr_local_address; /* our address of tunnel */
struct pipex_mppe_req pr_mppe_recv; /* mppe key for receive */
struct pipex_mppe_req pr_mppe_send; /* mppe key for send */
};
struct pipex_session_stat_req {
int psr_protocol; /* tunnel protocol */
uint16_t psr_session_id; /* session-id */
struct pipex_statistics psr_stat; /* statistics */
};
struct pipex_session_close_req {
int psr_protocol; /* tunnel protocol */
uint16_t psr_session_id; /* session-id */
struct pipex_statistics psr_stat; /* statistics */
};
#define pcr_protocol psr_protocol
#define pcr_session_id psr_session_id
#define pcr_stat psr_stat
struct pipex_session_list_req {
uint8_t plr_flags;
#define PIPEX_LISTREQ_MORE 0x01
int plr_ppp_id_count; /* count of PPP id */
int plr_ppp_id[PIPEX_MAX_LISTREQ]; /* PPP id */
};
struct pipex_session_config_req {
int pcr_protocol; /* tunnel protocol */
uint16_t pcr_session_id; /* session-id */
int pcr_ip_forward; /* ip_forwarding on/off */
};
/* for pppx(4) */
struct pppx_hdr {
u_int32_t pppx_proto;
u_int32_t pppx_id;
};
struct pipex_session_descr_req {
int pdr_protocol; /* tunnel protocol */
uint16_t pdr_session_id; /* session-id */
char pdr_descr[IFDESCRSIZE]; /* description */
};
/* PIPEX ioctls */
#define PIPEXSMODE _IOW ('p', 1, int)
#define PIPEXGMODE _IOR ('p', 2, int)
#define PIPEXASESSION _IOW ('p', 3, struct pipex_session_req)
#define PIPEXDSESSION _IOWR('p', 4, struct pipex_session_close_req)
#define PIPEXCSESSION _IOW ('p', 5, struct pipex_session_config_req)
#define PIPEXGSTAT _IOWR('p', 6, struct pipex_session_stat_req)
#define PIPEXGCLOSED _IOR ('p', 7, struct pipex_session_list_req)
#define PIPEXSIFDESCR _IOW ('p', 8, struct pipex_session_descr_req)
#ifdef _KERNEL
extern int pipex_enable;
struct pipex_session;
/* pipex context for a interface. */
struct pipex_iface_context {
struct ifnet *ifnet_this; /* outer interface */
u_int pipexmode; /* pipex mode */
/* virtual pipex_session entry for multicast routing */
struct pipex_session *multicast_session;
};
__BEGIN_DECLS
void pipex_init (void);
void pipex_iface_init (struct pipex_iface_context *, struct ifnet *);
void pipex_iface_start (struct pipex_iface_context *);
void pipex_iface_stop (struct pipex_iface_context *);
int pipex_notify_close_session(struct pipex_session *session);
int pipex_notify_close_session_all(void);
struct mbuf *pipex_output (struct mbuf *, int, int, struct pipex_iface_context *);
struct pipex_session *pipex_pppoe_lookup_session (struct mbuf *);
struct pipex_session *pipex_pppoe_lookup_session (struct mbuf *);
struct mbuf *pipex_pppoe_input (struct mbuf *, struct pipex_session *);
struct pipex_session *pipex_pptp_lookup_session (struct mbuf *);
struct mbuf *pipex_pptp_input (struct mbuf *, struct pipex_session *);
struct pipex_session *pipex_pptp_userland_lookup_session_ipv4 (struct mbuf *, struct in_addr);
struct pipex_session *pipex_pptp_userland_lookup_session_ipv6 (struct mbuf *, struct in6_addr);
struct pipex_session *pipex_l2tp_userland_lookup_session(struct mbuf *, struct sockaddr *);
struct mbuf *pipex_pptp_userland_output (struct mbuf *, struct pipex_session *);
struct pipex_session *pipex_l2tp_lookup_session (struct mbuf *, int);
struct mbuf *pipex_l2tp_input (struct mbuf *, int off, struct pipex_session *, uint32_t);
struct pipex_session *pipex_l2tp_userland_lookup_session_ipv4 (struct mbuf *, struct in_addr);
struct pipex_session *pipex_l2tp_userland_lookup_session_ipv6 (struct mbuf *, struct in6_addr);
struct mbuf *pipex_l2tp_userland_output (struct mbuf *, struct pipex_session *);
int pipex_ioctl (struct pipex_iface_context *, u_long, caddr_t);
void pipex_session_init_mppe_recv(struct pipex_session *, int,
int, u_char *);
void pipex_session_init_mppe_send(struct pipex_session *, int,
int, u_char *);
__END_DECLS
#endif /* _KERNEL */
#endif
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