1/*
2 * Copyright (c) 2011-2012 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29/*
30 * Copyright (c) 2002 Luigi Rizzo, Universita` di Pisa
31 *
32 * Redistribution and use in source and binary forms, with or without
33 * modification, are permitted provided that the following conditions
34 * are met:
35 * 1. Redistributions of source code must retain the above copyright
36 *    notice, this list of conditions and the following disclaimer.
37 * 2. Redistributions in binary form must reproduce the above copyright
38 *    notice, this list of conditions and the following disclaimer in the
39 *    documentation and/or other materials provided with the distribution.
40 *
41 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 */
54
55#ifndef __IP_FLOWID_H__
56#define __IP_FLOWID_H__
57
58#include <sys/types.h>
59#include <netinet/in.h>
60
61/*
62 * This structure is used as a flow mask and a flow id for various
63 * parts of the code.
64 */
65struct ip_flow_id {
66	u_int32_t       dst_ip;
67	u_int32_t       src_ip;
68	u_int16_t       dst_port;
69	u_int16_t       src_port;
70	u_int8_t        proto;
71	u_int8_t        flags;  /* protocol-specific flags */
72	u_int8_t        addr_type; /* 4 = ipv4, 6 = ipv6, 1=ether ? */
73	struct in6_addr dst_ip6;        /* could also store MAC addr! */
74	struct in6_addr src_ip6;
75	u_int32_t       flow_id6;
76	u_int32_t       frag_id6;
77};
78
79#define IS_IP6_FLOW_ID(id)      ((id)->addr_type == 6)
80
81#ifdef BSD_KERNEL_PRIVATE
82struct route_in6;
83struct sockaddr_in6;
84struct pf_rule;
85struct ip_fw;
86
87/*
88 * Arguments for calling ipfw_chk() and dummynet_io(). We put them
89 * all into a structure because this way it is easier and more
90 * efficient to pass variables around and extend the interface.
91 */
92struct ip_fw_args {
93	struct mbuf             *fwa_m;         /* the mbuf chain               */
94	struct ifnet            *fwa_oif;       /* output interface             */
95	struct sockaddr_in      *fwa_next_hop;  /* forward address              */
96	struct ip_fw            *fwa_ipfw_rule; /* matching IPFW rule           */
97	struct pf_rule          *fwa_pf_rule;   /* matching PF rule             */
98	struct ether_header     *fwa_eh;        /* for bridged packets          */
99	int			fwa_flags;      /* for dummynet                 */
100	int                     fwa_oflags;	/* for dummynet         */
101	union {
102		struct ip_out_args  *_fwa_ipoa;     /* for dummynet                */
103		struct ip6_out_args *_fwa_ip6oa;    /* for dummynet               */
104	} fwa_ipoa_;
105	union {
106		struct route        *_fwa_ro;       /* for dummynet         */
107		struct route_in6    *_fwa_ro6;      /* for dummynet         */
108	} fwa_ro_;
109	union {
110		struct sockaddr_in  *_fwa_dst;      /* for dummynet         */
111		struct sockaddr_in6 *_fwa_dst6;     /* for IPv6 dummynet         */
112	} fwa_dst_;
113	struct route_in6        *fwa_ro6_pmtu;  /* for IPv6 output */
114	struct ifnet		*fwa_origifp;	/* for IPv6 output */
115	u_int32_t		fwa_mtu;	/* for IPv6 output */
116	int			fwa_alwaysfrag;	/* for IPv6 output */
117	u_int32_t		fwa_unfragpartlen;  /* for IPv6 output */
118	struct ip6_exthdrs 	*fwa_exthdrs;	/* for IPv6 output */
119	struct ip_flow_id       fwa_id;         /* grabbed from IP header       */
120	u_int16_t               fwa_divert_rule;/* divert cookie                */
121	u_int32_t               fwa_cookie;
122};
123#define fwa_ipoa fwa_ipoa_._fwa_ipoa
124#define fwa_ip6oa fwa_ipoa_._fwa_ip6oa
125#define fwa_ro fwa_ro_._fwa_ro
126#define fwa_ro6 fwa_ro_._fwa_ro6
127#define fwa_dst fwa_dst_._fwa_dst
128#define fwa_dst6 fwa_dst_._fwa_dst6
129
130#endif /* BSD_KERNEL_PRIVATE */
131
132#endif /* __IP_FLOWID_H__ */
133