200 lines
7.8 KiB
C
200 lines
7.8 KiB
C
/* $OpenBSD: pipex.h,v 1.33 2022/07/12 08:58:53 mvs Exp $ */
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/*
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* Copyright (c) 2009 Internet Initiative Japan Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef NET_PIPEX_H
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#define NET_PIPEX_H 1
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/*
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* Names for pipex sysctl objects
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*/
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#define PIPEXCTL_ENABLE 1
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#define PIPEXCTL_MAXID 2
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#define PIPEXCTL_NAMES { \
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{ 0, 0 }, \
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{ "enable", CTLTYPE_INT }, \
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}
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#define PIPEX_PROTO_L2TP 1 /* protocol L2TP */
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#define PIPEX_PROTO_PPTP 2 /* protocol PPTP */
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#define PIPEX_PROTO_PPPOE 3 /* protocol PPPoE */
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#define PIPEX_MAX_LISTREQ 128 /* list request size */
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#define PIPEX_MPPE_KEYLEN 16
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/* pipex_mppe */
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struct pipex_mppe_req {
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int16_t stateless; /* mppe key mode.
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1 for stateless */
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int16_t keylenbits; /* mppe key length(in bits)*/
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u_char master_key[PIPEX_MPPE_KEYLEN]; /* mppe master key */
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};
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/* pipex statistics */
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struct pipex_statistics {
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uint32_t ipackets; /* packets received from tunnel */
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uint32_t ierrors; /* error packets received from tunnel */
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uint64_t ibytes; /* number of received bytes from tunnel */
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uint32_t opackets; /* packets sent to tunnel */
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uint32_t oerrors; /* error packets on sending to tunnel */
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uint64_t obytes; /* number of sent bytes to tunnel */
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uint32_t idle_time; /* idle time in seconds */
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};
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struct pipex_session_req {
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int pr_protocol; /* tunnel protocol */
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/* u_int pr_rdomain; */ /* rdomain id */
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uint16_t pr_session_id; /* session-id */
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uint16_t pr_peer_session_id; /* peer's session-id */
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uint32_t pr_ppp_flags; /* PPP configuration flags */
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#define PIPEX_PPP_ACFC_ACCEPTED 0x0001 /* ACFC accepted */
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#define PIPEX_PPP_PFC_ACCEPTED 0x0002 /* PFC accepted */
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#define PIPEX_PPP_ACFC_ENABLED 0x0004 /* ACFC enabled */
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#define PIPEX_PPP_PFC_ENABLED 0x0008 /* PFC enabled */
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#define PIPEX_PPP_MPPE_ACCEPTED 0x0010 /* MPPE accepted */
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#define PIPEX_PPP_MPPE_ENABLED 0x0020 /* MPPE enabled */
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#define PIPEX_PPP_MPPE_REQUIRED 0x0040 /* MPPE is required */
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#define PIPEX_PPP_HAS_ACF 0x0080 /* has ACF */
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#define PIPEX_PPP_ADJUST_TCPMSS 0x0100 /* do tcpmss adjustment */
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#define PIPEX_PPP_INGRESS_FILTER 0x0200 /* do ingress filter */
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int8_t pr_ccp_id; /* CCP current packet id */
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int pr_ppp_id; /* PPP Id. */
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uint16_t pr_peer_mru; /* Peer's MRU */
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uint32_t pr_timeout_sec; /* Idle Timer */
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struct in_addr pr_ip_srcaddr; /* local framed IP-Address */
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struct in_addr pr_ip_address; /* framed IP-Address */
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struct in_addr pr_ip_netmask; /* framed IP-Netmask */
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struct sockaddr_in6 pr_ip6_address; /* framed IPv6-Address */
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int pr_ip6_prefixlen; /* framed IPv6-Prefixlen */
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union {
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struct {
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uint32_t snd_nxt; /* send next */
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uint32_t rcv_nxt; /* receive next */
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uint32_t snd_una; /* unacked */
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uint32_t rcv_acked; /* recv acked */
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int winsz; /* window size */
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int maxwinsz; /* max window size */
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int peer_maxwinsz; /* peer's max window size */
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} pptp;
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struct {
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uint32_t option_flags;
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#define PIPEX_L2TP_USE_SEQUENCING 0x00000001
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uint16_t tunnel_id; /* our tunnel-id */
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uint16_t peer_tunnel_id;/* peer's tunnel-id */
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uint32_t ns_nxt; /* send next */
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uint32_t nr_nxt; /* receive next */
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uint32_t ns_una; /* unacked */
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uint32_t nr_acked; /* recv acked */
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uint32_t ipsecflowinfo; /* IPsec flow id for NAT-T */
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} l2tp;
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struct {
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char over_ifname[IF_NAMESIZE]; /* ethernet ifname */
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} pppoe;
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} pr_proto;
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struct sockaddr_storage pr_peer_address; /* peer address of tunnel */
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struct sockaddr_storage pr_local_address; /* our address of tunnel */
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struct pipex_mppe_req pr_mppe_recv; /* mppe key for receive */
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struct pipex_mppe_req pr_mppe_send; /* mppe key for send */
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};
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struct pipex_session_stat_req {
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int psr_protocol; /* tunnel protocol */
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uint16_t psr_session_id; /* session-id */
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struct pipex_statistics psr_stat; /* statistics */
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};
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struct pipex_session_close_req {
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int psr_protocol; /* tunnel protocol */
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uint16_t psr_session_id; /* session-id */
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struct pipex_statistics psr_stat; /* statistics */
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};
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#define pcr_protocol psr_protocol
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#define pcr_session_id psr_session_id
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#define pcr_stat psr_stat
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struct pipex_session_list_req {
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uint8_t plr_flags;
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#define PIPEX_LISTREQ_MORE 0x01
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int plr_ppp_id_count; /* count of PPP id */
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int plr_ppp_id[PIPEX_MAX_LISTREQ]; /* PPP id */
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};
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/* for pppx(4) */
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struct pppx_hdr {
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u_int32_t pppx_proto; /* write: protocol in PIPEX_PROTO_ */
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u_int32_t pppx_id; /* write: session_id, read: ppp_id */
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};
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struct pipex_session_descr_req {
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int pdr_protocol; /* tunnel protocol */
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uint16_t pdr_session_id; /* session-id */
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char pdr_descr[IFDESCRSIZE]; /* description */
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};
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/* PIPEX ioctls */
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#define PIPEXASESSION _IOW ('p', 3, struct pipex_session_req)
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#define PIPEXDSESSION _IOWR('p', 4, struct pipex_session_close_req)
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#define PIPEXGSTAT _IOWR('p', 6, struct pipex_session_stat_req)
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#define PIPEXGCLOSED _IOR ('p', 7, struct pipex_session_list_req)
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#define PIPEXSIFDESCR _IOW ('p', 8, struct pipex_session_descr_req)
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#ifdef _KERNEL
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extern int pipex_enable;
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struct pipex_session;
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__BEGIN_DECLS
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void pipex_init (void);
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struct pipex_session *pipex_pppoe_lookup_session (struct mbuf *);
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struct mbuf *pipex_pppoe_input (struct mbuf *, struct pipex_session *);
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struct pipex_session *pipex_pptp_lookup_session (struct mbuf *);
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struct mbuf *pipex_pptp_input (struct mbuf *, struct pipex_session *);
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struct pipex_session *pipex_pptp_userland_lookup_session_ipv4 (struct mbuf *, struct in_addr);
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struct pipex_session *pipex_pptp_userland_lookup_session_ipv6 (struct mbuf *, struct in6_addr);
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struct pipex_session *pipex_l2tp_userland_lookup_session(struct mbuf *, struct sockaddr *);
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struct mbuf *pipex_pptp_userland_output (struct mbuf *, struct pipex_session *);
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struct pipex_session *pipex_l2tp_lookup_session (struct mbuf *, int);
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struct mbuf *pipex_l2tp_input (struct mbuf *, int off, struct pipex_session *, uint32_t);
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struct pipex_session *pipex_l2tp_userland_lookup_session_ipv4 (struct mbuf *, struct in_addr);
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struct pipex_session *pipex_l2tp_userland_lookup_session_ipv6 (struct mbuf *, struct in6_addr);
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struct mbuf *pipex_l2tp_userland_output (struct mbuf *, struct pipex_session *);
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void pipex_rele_session(struct pipex_session *);
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int pipex_ioctl (void *, u_long, caddr_t);
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void pipex_session_init_mppe_recv(struct pipex_session *, int,
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int, u_char *);
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void pipex_session_init_mppe_send(struct pipex_session *, int,
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int, u_char *);
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__END_DECLS
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#endif /* _KERNEL */
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#endif
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