2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright (c) 2020 Yandex LLC
5 * Copyright (c) 2020 Andrey V. Elsukov <ae@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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
29 #pragma D depends_on provider ipfw
31 /* ipfw_chk() return values */
32 #pragma D binding "1.0" IP_FW_PASS
33 inline int IP_FW_PASS = 0;
34 #pragma D binding "1.0" IP_FW_DENY
35 inline int IP_FW_DENY = 1;
36 #pragma D binding "1.0" IP_FW_DIVERT
37 inline int IP_FW_DIVERT = 2;
38 #pragma D binding "1.0" IP_FW_TEE
39 inline int IP_FW_TEE = 3;
40 #pragma D binding "1.0" IP_FW_DUMMYNET
41 inline int IP_FW_DUMMYNET = 4;
42 #pragma D binding "1.0" IP_FW_NETGRAPH
43 inline int IP_FW_NETGRAPH = 5;
44 #pragma D binding "1.0" IP_FW_NGTEE
45 inline int IP_FW_NGTEE = 6;
46 #pragma D binding "1.0" IP_FW_NAT
47 inline int IP_FW_NAT = 7;
48 #pragma D binding "1.0" IP_FW_REASS
49 inline int IP_FW_REASS = 8;
50 #pragma D binding "1.0" IP_FW_NAT64
51 inline int IP_FW_NAT64 = 9;
53 #pragma D binding "1.0" ipfw_retcodes
54 inline string ipfw_retcodes[int ret] =
55 ret == IP_FW_PASS ? "PASS" :
56 ret == IP_FW_DENY ? "DENY" :
57 ret == IP_FW_DIVERT ? "DIVERT" :
58 ret == IP_FW_TEE ? "TEE" :
59 ret == IP_FW_DUMMYNET ? "DUMMYNET" :
60 ret == IP_FW_NETGRAPH ? "NETGRAPH" :
61 ret == IP_FW_NGTEE ? "NGTEE" :
62 ret == IP_FW_NAT ? "NAT" :
63 ret == IP_FW_REASS ? "REASS" :
64 ret == IP_FW_NAT64 ? "NAT64" :
67 /* ip_fw_args flags */
68 #pragma D binding "1.0" IPFW_ARGS_ETHER
69 inline int IPFW_ARGS_ETHER = 0x00010000; /* valid ethernet header */
70 #pragma D binding "1.0" IPFW_ARGS_NH4
71 inline int IPFW_ARGS_NH4 = 0x00020000; /* IPv4 next hop in hopstore */
72 #pragma D binding "1.0" IPFW_ARGS_NH6
73 inline int IPFW_ARGS_NH6 = 0x00040000; /* IPv6 next hop in hopstore */
74 #pragma D binding "1.0" IPFW_ARGS_NH4PTR
75 inline int IPFW_ARGS_NH4PTR = 0x00080000; /* IPv4 next hop in next_hop */
76 #pragma D binding "1.0" IPFW_ARGS_NH6PTR
77 inline int IPFW_ARGS_NH6PTR = 0x00100000; /* IPv6 next hop in next_hop6 */
78 #pragma D binding "1.0" IPFW_ARGS_REF
79 inline int IPFW_ARGS_REF = 0x00200000; /* valid ipfw_rule_ref */
80 #pragma D binding "1.0" IPFW_ARGS_IN
81 inline int IPFW_ARGS_IN = 0x00400000; /* called on input */
82 #pragma D binding "1.0" IPFW_ARGS_OUT
83 inline int IPFW_ARGS_OUT = 0x00800000; /* called on output */
84 #pragma D binding "1.0" IPFW_ARGS_IP4
85 inline int IPFW_ARGS_IP4 = 0x01000000; /* belongs to v4 ISR */
86 #pragma D binding "1.0" IPFW_ARGS_IP6
87 inline int IPFW_ARGS_IP6 = 0x02000000; /* belongs to v6 ISR */
88 #pragma D binding "1.0" IPFW_ARGS_DROP
89 inline int IPFW_ARGS_DROP = 0x04000000; /* drop it (dummynet) */
90 #pragma D binding "1.0" IPFW_ARGS_LENMASK
91 inline int IPFW_ARGS_LENMASK = 0x0000ffff; /* length of data in *mem */
93 /* ipfw_rule_ref.info */
94 #pragma D binding "1.0" IPFW_INFO_MASK
95 inline int IPFW_INFO_MASK = 0x0000ffff;
96 #pragma D binding "1.0" IPFW_INFO_OUT
97 inline int IPFW_INFO_OUT = 0x00000000;
98 #pragma D binding "1.0" IPFW_INFO_IN
99 inline int IPFW_INFO_IN = 0x80000000;
100 #pragma D binding "1.0" IPFW_ONEPASS
101 inline int IPFW_ONEPASS = 0x40000000;
102 #pragma D binding "1.0" IPFW_IS_MASK
103 inline int IPFW_IS_MASK = 0x30000000;
104 #pragma D binding "1.0" IPFW_IS_DIVERT
105 inline int IPFW_IS_DIVERT = 0x20000000;
106 #pragma D binding "1.0" IPFW_IS_DUMMYNET
107 inline int IPFW_IS_DUMMYNET = 0x10000000;
108 #pragma D binding "1.0" IPFW_IS_PIPE
109 inline int IPFW_IS_PIPE = 0x08000000;
111 typedef struct ipfw_match_info {
119 struct ip6_hdr *ip6p;
125 uint16_t fib; /* XXX */
126 in_addr_t dst_ip; /* in network byte order */
127 in_addr_t src_ip; /* in network byte order */
128 struct in6_addr dst_ip6;
129 struct in6_addr src_ip6;
131 uint16_t dst_port; /* in host byte order */
132 uint16_t src_port; /* in host byte order */
134 uint32_t flowid; /* IPv6 flowid */
145 #pragma D binding "1.0" translator
146 translator ipfw_match_info_t < struct ip_fw_args *p > {
148 m = (p->flags & IPFW_ARGS_LENMASK) ? NULL : p->m;
149 mem = (p->flags & IPFW_ARGS_LENMASK) ? p->mem : NULL;
152 /* Initialize IP pointer corresponding to addr_type */
153 ipp = (p->flags & IPFW_ARGS_IP4) ?
154 (p->flags & IPFW_ARGS_LENMASK) ? (struct ip *)p->mem :
155 (p->m != NULL) ? (struct ip *)p->m->m_data : NULL : NULL;
156 ip6p = (p->flags & IPFW_ARGS_IP6) ?
157 (p->flags & IPFW_ARGS_LENMASK) ? (struct ip6_hdr *)p->mem :
158 (p->m != NULL) ? (struct ip6_hdr *)p->m->m_data : NULL : NULL;
160 /* fill f_id fields */
161 addr_type = p->f_id.addr_type;
162 proto = p->f_id.proto;
163 proto_flags = p->f_id._flags;
165 /* f_id.fib keeps truncated fibnum, use mbuf's fibnum if possible */
166 fib = p->m != NULL ? p->m->m_pkthdr.fibnum : p->f_id.fib;
169 * ipfw_chk() keeps IPv4 addresses in host byte order. But for
170 * dtrace script it is useful to have them in network byte order,
171 * because inet_ntoa() uses address in network byte order.
173 dst_ip = htonl(p->f_id.dst_ip);
174 src_ip = htonl(p->f_id.src_ip);
176 dst_ip6 = p->f_id.dst_ip6;
177 src_ip6 = p->f_id.src_ip6;
179 dst_port = p->f_id.dst_port;
180 src_port = p->f_id.src_port;
182 flowid = p->f_id.flow_id6;
183 extra = p->f_id.extra;
186 slot = (p->flags & IPFW_ARGS_REF) ? p->rule.slot : 0;
187 rulenum = (p->flags & IPFW_ARGS_REF) ? p->rule.rulenum : 0;
188 rule_id = (p->flags & IPFW_ARGS_REF) ? p->rule.rule_id : 0;
189 chain_id = (p->flags & IPFW_ARGS_REF) ? p->rule.chain_id : 0;
190 match_info = (p->flags & IPFW_ARGS_REF) ? p->rule.info : 0;
193 typedef struct ipfw_rule_info {
205 #pragma D binding "1.0" translator
206 translator ipfw_rule_info_t < struct ip_fw *r > {
207 act_ofs = r->act_ofs;
208 cmd_len = r->cmd_len;
209 rulenum = r->rulenum;
213 cached_id = r->cache.id;
214 cached_pos = r->cache.pos;