Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
Newer
Older
100644 308 lines (263 sloc) 9.044 kB
b11ddf8 Initial revision
mcr authored
1 /*
2 * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
16 * written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 *
23d8b72 @yuguy Add support for OpenBSD DLT_PFLOG.
yuguy authored
21 * @(#) $Header: /tcpdump/master/libpcap/gencode.h,v 1.57 2003-03-11 06:23:53 guy Exp $ (LBL)
243b20e @yuguy Add SunATM support, based on code from Yen Yen Lim at North Dakota State
yuguy authored
22 */
23
24 /*
25 * ATM support:
26 *
27 * Copyright (c) 1997 Yen Yen Lim and North Dakota State University
28 * All rights reserved.
29 *
30 * Redistribution and use in source and binary forms, with or without
31 * modification, are permitted provided that the following conditions
32 * are met:
33 * 1. Redistributions of source code must retain the above copyright
34 * notice, this list of conditions and the following disclaimer.
35 * 2. Redistributions in binary form must reproduce the above copyright
36 * notice, this list of conditions and the following disclaimer in the
37 * documentation and/or other materials provided with the distribution.
38 * 3. All advertising materials mentioning features or use of this software
39 * must display the following acknowledgement:
40 * This product includes software developed by Yen Yen Lim and
41 * North Dakota State University
42 * 4. The name of the author may not be used to endorse or promote products
43 * derived from this software without specific prior written permission.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
47 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
48 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
49 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
50 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
51 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
53 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
54 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
55 * POSSIBILITY OF SUCH DAMAGE.
b11ddf8 Initial revision
mcr authored
56 */
57
58 /* Address qualifiers. */
59
60 #define Q_HOST 1
61 #define Q_NET 2
62 #define Q_PORT 3
63 #define Q_GATEWAY 4
64 #define Q_PROTO 5
7fe3c11 IPv6 packet filtering code.
itojun authored
65 #define Q_PROTOCHAIN 6
b11ddf8 Initial revision
mcr authored
66
67 /* Protocol qualifiers. */
68
69 #define Q_LINK 1
70 #define Q_IP 2
71 #define Q_ARP 3
72 #define Q_RARP 4
283da6d SCTP support from Armando L. Caro Jr. <acaro@mail.eecis.udel.edu>
fenner authored
73 #define Q_SCTP 5
74 #define Q_TCP 6
75 #define Q_UDP 7
76 #define Q_ICMP 8
77 #define Q_IGMP 9
78 #define Q_IGRP 10
b11ddf8 Initial revision
mcr authored
79
80
283da6d SCTP support from Armando L. Caro Jr. <acaro@mail.eecis.udel.edu>
fenner authored
81 #define Q_ATALK 11
82 #define Q_DECNET 12
83 #define Q_LAT 13
84 #define Q_SCA 14
85 #define Q_MOPRC 15
86 #define Q_MOPDL 16
b11ddf8 Initial revision
mcr authored
87
7fe3c11 IPv6 packet filtering code.
itojun authored
88
283da6d SCTP support from Armando L. Caro Jr. <acaro@mail.eecis.udel.edu>
fenner authored
89 #define Q_IPV6 17
90 #define Q_ICMPV6 18
91 #define Q_AH 19
92 #define Q_ESP 20
7fe3c11 IPv6 packet filtering code.
itojun authored
93
283da6d SCTP support from Armando L. Caro Jr. <acaro@mail.eecis.udel.edu>
fenner authored
94 #define Q_PIM 21
95 #define Q_VRRP 22
7fe3c11 IPv6 packet filtering code.
itojun authored
96
283da6d SCTP support from Armando L. Caro Jr. <acaro@mail.eecis.udel.edu>
fenner authored
97 #define Q_AARP 23
54b2ab1 @yuguy Patch from Monroe Williams <monroe@pobox.com>, submitted with NetBSD PR
yuguy authored
98
283da6d SCTP support from Armando L. Caro Jr. <acaro@mail.eecis.udel.edu>
fenner authored
99 #define Q_ISO 24
100 #define Q_ESIS 25
101 #define Q_ISIS 26
102 #define Q_CLNP 27
af30d75 @yuguy Tony Li's changes, from FreeBSD, to support filtering for OSI packets
yuguy authored
103
283da6d SCTP support from Armando L. Caro Jr. <acaro@mail.eecis.udel.edu>
fenner authored
104 #define Q_STP 28
2b3dac2 @yuguy Support checking for protocols specified by an LLC SAP on FDDI, Token
yuguy authored
105
283da6d SCTP support from Armando L. Caro Jr. <acaro@mail.eecis.udel.edu>
fenner authored
106 #define Q_IPX 29
d17596d @yuguy Add "ipx", which checks for the LLC SAP for IPX as well as, on Ethernet,
yuguy authored
107
283da6d SCTP support from Armando L. Caro Jr. <acaro@mail.eecis.udel.edu>
fenner authored
108 #define Q_NETBEUI 30
b0dcde2 @yuguy Add a "netbeui" keyword, which selects NetBEUI packets (LLC packets with
yuguy authored
109
bd48816 add BPF_ filters for misc. IS-IS PDU Types
hannes authored
110 /* IS-IS Levels */
111 #define Q_ISIS_L1 31
112 #define Q_ISIS_L2 32
113 /* PDU types */
114 #define Q_ISIS_IIH 33
115 #define Q_ISIS_LAN_IIH 34
116 #define Q_ISIS_PTP_IIH 35
117 #define Q_ISIS_SNP 36
118 #define Q_ISIS_CSNP 37
119 #define Q_ISIS_PSNP 38
120 #define Q_ISIS_LSP 39
121
b11ddf8 Initial revision
mcr authored
122 /* Directional qualifiers. */
123
124 #define Q_SRC 1
125 #define Q_DST 2
126 #define Q_OR 3
127 #define Q_AND 4
128
129 #define Q_DEFAULT 0
130 #define Q_UNDEF 255
131
243b20e @yuguy Add SunATM support, based on code from Yen Yen Lim at North Dakota State
yuguy authored
132 /* ATM types */
133 #define A_METAC 22 /* Meta signalling Circuit */
134 #define A_BCC 23 /* Broadcast Circuit */
135 #define A_OAMF4SC 24 /* Segment OAM F4 Circuit */
136 #define A_OAMF4EC 25 /* End-to-End OAM F4 Circuit */
137 #define A_SC 26 /* Signalling Circuit*/
138 #define A_ILMIC 27 /* ILMI Circuit */
139 #define A_OAM 28 /* OAM cells : F4 only */
140 #define A_OAMF4 29 /* OAM F4 cells: Segment + End-to-end */
141 #define A_LANE 30 /* LANE traffic */
142 #define A_LLC 31 /* LLC-encapsulated traffic */
143
144 /* Based on Q.2931 signalling protocol */
145 #define A_SETUP 41 /* Setup message */
146 #define A_CALLPROCEED 42 /* Call proceeding message */
147 #define A_CONNECT 43 /* Connect message */
148 #define A_CONNECTACK 44 /* Connect Ack message */
149 #define A_RELEASE 45 /* Release message */
150 #define A_RELEASE_DONE 46 /* Release message */
151
152 /* ATM field types */
153 #define A_VPI 51
154 #define A_VCI 52
155 #define A_PROTOTYPE 53
156 #define A_MSGTYPE 54
157 #define A_CALLREFTYPE 55
158
159 #define A_CONNECTMSG 70 /* returns Q.2931 signalling messages for
160 establishing and destroying switched
161 virtual connection */
162 #define A_METACONNECT 71 /* returns Q.2931 signalling messages for
163 establishing and destroying predefined
164 virtual circuits, such as broadcast
165 circuit, oamf4 segment circuit, oamf4
166 end-to-end circuits, ILMI circuits or
167 connection signalling circuit. */
168
7fe3c11 IPv6 packet filtering code.
itojun authored
169 struct slist;
170
b11ddf8 Initial revision
mcr authored
171 struct stmt {
172 int code;
7fe3c11 IPv6 packet filtering code.
itojun authored
173 struct slist *jt; /*only for relative jump in block*/
174 struct slist *jf; /*only for relative jump in block*/
b11ddf8 Initial revision
mcr authored
175 bpf_int32 k;
176 };
177
178 struct slist {
179 struct stmt s;
180 struct slist *next;
181 };
182
5918c49 whitespace cleanup
itojun authored
183 /*
b11ddf8 Initial revision
mcr authored
184 * A bit vector to represent definition sets. We assume TOT_REGISTERS
185 * is smaller than 8*sizeof(atomset).
186 */
187 typedef bpf_u_int32 atomset;
188 #define ATOMMASK(n) (1 << (n))
189 #define ATOMELEM(d, n) (d & ATOMMASK(n))
190
191 /*
192 * An unbounded set.
193 */
194 typedef bpf_u_int32 *uset;
195
196 /*
197 * Total number of atomic entities, including accumulator (A) and index (X).
198 * We treat all these guys similarly during flow analysis.
199 */
200 #define N_ATOMS (BPF_MEMWORDS+2)
201
202 struct edge {
203 int id;
204 int code;
205 uset edom;
206 struct block *succ;
207 struct block *pred;
208 struct edge *next; /* link list of incoming edges for a node */
209 };
210
211 struct block {
212 int id;
213 struct slist *stmts; /* side effect stmts */
214 struct stmt s; /* branch stmt */
215 int mark;
216 int longjt; /* jt branch requires long jump */
217 int longjf; /* jf branch requires long jump */
218 int level;
219 int offset;
220 int sense;
221 struct edge et;
222 struct edge ef;
223 struct block *head;
224 struct block *link; /* link field used by optimizer */
225 uset dom;
226 uset closure;
227 struct edge *in_edges;
228 atomset def, kill;
229 atomset in_use;
230 atomset out_use;
231 int oval;
232 int val[N_ATOMS];
233 };
234
235 struct arth {
236 struct block *b; /* protocol checks */
237 struct slist *s; /* stmt list */
238 int regno; /* virtual register number of result */
239 };
240
241 struct qual {
242 unsigned char addr;
243 unsigned char proto;
244 unsigned char dir;
245 unsigned char pad;
246 };
247
248 struct arth *gen_loadi(int);
249 struct arth *gen_load(int, struct arth *, int);
250 struct arth *gen_loadlen(void);
251 struct arth *gen_neg(struct arth *);
252 struct arth *gen_arth(int, struct arth *, struct arth *);
253
254 void gen_and(struct block *, struct block *);
255 void gen_or(struct block *, struct block *);
256 void gen_not(struct block *);
257
258 struct block *gen_scode(const char *, struct qual);
259 struct block *gen_ecode(const u_char *, struct qual);
38b97b7 @yuguy ARCNet support, from NetBSD.
yuguy authored
260 struct block *gen_acode(const u_char *, struct qual);
b11ddf8 Initial revision
mcr authored
261 struct block *gen_mcode(const char *, const char *, int, struct qual);
7fe3c11 IPv6 packet filtering code.
itojun authored
262 #ifdef INET6
263 struct block *gen_mcode6(const char *, const char *, int, struct qual);
264 #endif
b11ddf8 Initial revision
mcr authored
265 struct block *gen_ncode(const char *, bpf_u_int32, struct qual);
266 struct block *gen_proto_abbrev(int);
267 struct block *gen_relation(int, struct arth *, struct arth *, int);
268 struct block *gen_less(int);
269 struct block *gen_greater(int);
270 struct block *gen_byteop(int, int, int);
271 struct block *gen_broadcast(int);
272 struct block *gen_multicast(int);
273 struct block *gen_inbound(int);
274
98a503e @yuguy Improved VLAN support, from Peter Jeremy - "vlan" filtering keyword,
yuguy authored
275 struct block *gen_vlan(int);
276
243b20e @yuguy Add SunATM support, based on code from Yen Yen Lim at North Dakota State
yuguy authored
277 struct block *gen_atmfield_code(int atmfield, bpf_u_int32 jvalue, bpf_u_int32 jtype, int reverse);
278 struct block *gen_atmtype_abbrev(int type);
279 struct block *gen_atmmulti_abbrev(int type);
280
23d8b72 @yuguy Add support for OpenBSD DLT_PFLOG.
yuguy authored
281 struct block *gen_pf_ifname(char *);
282 struct block *gen_pf_rnr(int);
283 struct block *gen_pf_reason(int);
284 struct block *gen_pf_action(int);
285 struct block *gen_pf_dir(int);
286
b11ddf8 Initial revision
mcr authored
287 void bpf_optimize(struct block **);
0e2f8c8 add config.h, remove gnuc.h. remove __dead
assar authored
288 void bpf_error(const char *, ...)
417d093 (bpf_error): conditionalize __attribute__
assar authored
289 #if HAVE___ATTRIBUTE__
0e2f8c8 add config.h, remove gnuc.h. remove __dead
assar authored
290 __attribute__((noreturn, format (printf, 1, 2)))
417d093 (bpf_error): conditionalize __attribute__
assar authored
291 #endif
292 ;
b11ddf8 Initial revision
mcr authored
293
294 void finish_parse(struct block *);
295 char *sdup(const char *);
296
297 struct bpf_insn *icode_to_fcode(struct block *, int *);
298 int pcap_parse(void);
299 void lex_init(char *);
0d0297b @yuguy Older versions of Flex (e.g., 2.5.2, which at least one user had) dump
yuguy authored
300 void lex_cleanup(void);
b11ddf8 Initial revision
mcr authored
301 void sappend(struct slist *, struct slist *);
302
303 /* XXX */
304 #define JT(b) ((b)->et.succ)
305 #define JF(b) ((b)->ef.succ)
7fe3c11 IPv6 packet filtering code.
itojun authored
306
307 extern int no_optimize;
Something went wrong with that request. Please try again.