3 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
4 * The Regents of the University of California. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that: (1) source code distributions
8 * retain the above copyright notice and this paragraph in its entirety, (2)
9 * distributions including binary code include the above copyright notice and
10 * this paragraph in its entirety in the documentation or other materials
11 * provided with the distribution, and (3) all advertising materials mentioning
12 * features or use of this software display the following acknowledgement:
13 * ``This product includes software developed by the University of California,
14 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
15 * the University nor the names of its contributors may be used to endorse
16 * or promote products derived from this software without specific prior
18 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
19 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
20 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
24 static const char rcsid[] _U_ =
25 "@(#) $Header: /tcpdump/master/libpcap/grammar.y,v 1.101 2007-11-18 02:03:52 guy Exp $ (LBL)";
33 #include <pcap-stdinc.h>
35 #include <sys/types.h>
36 #include <sys/socket.h>
47 #include <netinet/in.h>
48 #include <arpa/inet.h>
56 #ifdef HAVE_NET_PFVAR_H
58 #include <net/pf/pfvar.h>
59 #include <net/pf/if_pflog.h>
61 #include "ieee80211.h"
62 #include <pcap/namedb.h>
64 #ifdef HAVE_OS_PROTO_H
68 #define QSET(q, p, d, a) (q).proto = (p),\
74 const char *s; /* string */
77 static const struct tok ieee80211_types[] = {
78 { IEEE80211_FC0_TYPE_DATA, "data" },
79 { IEEE80211_FC0_TYPE_MGT, "mgt" },
80 { IEEE80211_FC0_TYPE_MGT, "management" },
81 { IEEE80211_FC0_TYPE_CTL, "ctl" },
82 { IEEE80211_FC0_TYPE_CTL, "control" },
85 static const struct tok ieee80211_mgt_subtypes[] = {
86 { IEEE80211_FC0_SUBTYPE_ASSOC_REQ, "assocreq" },
87 { IEEE80211_FC0_SUBTYPE_ASSOC_REQ, "assoc-req" },
88 { IEEE80211_FC0_SUBTYPE_ASSOC_RESP, "assocresp" },
89 { IEEE80211_FC0_SUBTYPE_ASSOC_RESP, "assoc-resp" },
90 { IEEE80211_FC0_SUBTYPE_REASSOC_REQ, "reassocreq" },
91 { IEEE80211_FC0_SUBTYPE_REASSOC_REQ, "reassoc-req" },
92 { IEEE80211_FC0_SUBTYPE_REASSOC_RESP, "reassocresp" },
93 { IEEE80211_FC0_SUBTYPE_REASSOC_RESP, "reassoc-resp" },
94 { IEEE80211_FC0_SUBTYPE_PROBE_REQ, "probereq" },
95 { IEEE80211_FC0_SUBTYPE_PROBE_REQ, "probe-req" },
96 { IEEE80211_FC0_SUBTYPE_PROBE_RESP, "proberesp" },
97 { IEEE80211_FC0_SUBTYPE_PROBE_RESP, "probe-resp" },
98 { IEEE80211_FC0_SUBTYPE_BEACON, "beacon" },
99 { IEEE80211_FC0_SUBTYPE_ATIM, "atim" },
100 { IEEE80211_FC0_SUBTYPE_DISASSOC, "disassoc" },
101 { IEEE80211_FC0_SUBTYPE_DISASSOC, "disassociation" },
102 { IEEE80211_FC0_SUBTYPE_AUTH, "auth" },
103 { IEEE80211_FC0_SUBTYPE_AUTH, "authentication" },
104 { IEEE80211_FC0_SUBTYPE_DEAUTH, "deauth" },
105 { IEEE80211_FC0_SUBTYPE_DEAUTH, "deauthentication" },
108 static const struct tok ieee80211_ctl_subtypes[] = {
109 { IEEE80211_FC0_SUBTYPE_PS_POLL, "ps-poll" },
110 { IEEE80211_FC0_SUBTYPE_RTS, "rts" },
111 { IEEE80211_FC0_SUBTYPE_CTS, "cts" },
112 { IEEE80211_FC0_SUBTYPE_ACK, "ack" },
113 { IEEE80211_FC0_SUBTYPE_CF_END, "cf-end" },
114 { IEEE80211_FC0_SUBTYPE_CF_END_ACK, "cf-end-ack" },
117 static const struct tok ieee80211_data_subtypes[] = {
118 { IEEE80211_FC0_SUBTYPE_DATA, "data" },
119 { IEEE80211_FC0_SUBTYPE_CF_ACK, "data-cf-ack" },
120 { IEEE80211_FC0_SUBTYPE_CF_POLL, "data-cf-poll" },
121 { IEEE80211_FC0_SUBTYPE_CF_ACPL, "data-cf-ack-poll" },
122 { IEEE80211_FC0_SUBTYPE_NODATA, "null" },
123 { IEEE80211_FC0_SUBTYPE_NODATA_CF_ACK, "cf-ack" },
124 { IEEE80211_FC0_SUBTYPE_NODATA_CF_POLL, "cf-poll" },
125 { IEEE80211_FC0_SUBTYPE_NODATA_CF_ACPL, "cf-ack-poll" },
126 { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_DATA, "qos-data" },
127 { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_CF_ACK, "qos-data-cf-ack" },
128 { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_CF_POLL, "qos-data-cf-poll" },
129 { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_CF_ACPL, "qos-data-cf-ack-poll" },
130 { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_NODATA, "qos" },
131 { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_NODATA_CF_POLL, "qos-cf-poll" },
132 { IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_NODATA_CF_ACPL, "qos-cf-ack-poll" },
137 const struct tok *tok;
139 static const struct type2tok ieee80211_type_subtypes[] = {
140 { IEEE80211_FC0_TYPE_MGT, ieee80211_mgt_subtypes },
141 { IEEE80211_FC0_TYPE_CTL, ieee80211_ctl_subtypes },
142 { IEEE80211_FC0_TYPE_DATA, ieee80211_data_subtypes },
147 str2tok(const char *str, const struct tok *toks)
151 for (i = 0; toks[i].s != NULL; i++) {
152 if (pcap_strcasecmp(toks[i].s, str) == 0)
160 static struct qual qerr = { Q_UNDEF, Q_UNDEF, Q_UNDEF, Q_UNDEF };
163 yyerror(const char *msg)
166 bpf_error("%s", msg);
170 #ifdef NEED_YYPARSE_WRAPPER
180 #ifdef HAVE_NET_PFVAR_H
182 pfreason_to_num(const char *reason)
184 const char *reasons[] = PFRES_NAMES;
187 for (i = 0; reasons[i]; i++) {
188 if (pcap_strcasecmp(reason, reasons[i]) == 0)
191 bpf_error("unknown PF reason");
196 pfaction_to_num(const char *action)
198 if (pcap_strcasecmp(action, "pass") == 0 ||
199 pcap_strcasecmp(action, "accept") == 0)
201 else if (pcap_strcasecmp(action, "drop") == 0 ||
202 pcap_strcasecmp(action, "block") == 0)
204 #if HAVE_PF_NAT_THROUGH_PF_NORDR
205 else if (pcap_strcasecmp(action, "rdr") == 0)
207 else if (pcap_strcasecmp(action, "nat") == 0)
209 else if (pcap_strcasecmp(action, "binat") == 0)
211 else if (pcap_strcasecmp(action, "nordr") == 0)
215 bpf_error("unknown PF action");
219 #else /* !HAVE_NET_PFVAR_H */
221 pfreason_to_num(const char *reason)
223 bpf_error("libpcap was compiled on a machine without pf support");
226 /* this is to make the VC compiler happy */
231 pfaction_to_num(const char *action)
233 bpf_error("libpcap was compiled on a machine without pf support");
236 /* this is to make the VC compiler happy */
239 #endif /* HAVE_NET_PFVAR_H */
258 %type <blk> expr id nid pid term rterm qid
260 %type <i> pqual dqual aqual ndaqual
262 %type <i> byteop pname pnum relop irelop
263 %type <blk> and or paren not null prog
264 %type <rblk> other pfvar p80211
265 %type <i> atmtype atmmultitype
267 %type <blk> atmfieldvalue atmvalue atmlistvalue
269 %type <blk> mtp3field
270 %type <blk> mtp3fieldvalue mtp3value mtp3listvalue
273 %token DST SRC HOST GATEWAY
274 %token NET NETMASK PORT PORTRANGE LESS GREATER PROTO PROTOCHAIN CBYTE
275 %token ARP RARP IP SCTP TCP UDP ICMP IGMP IGRP PIM VRRP CARP
276 %token ATALK AARP DECNET LAT SCA MOPRC MOPDL
277 %token TK_BROADCAST TK_MULTICAST
278 %token NUM INBOUND OUTBOUND
279 %token PF_IFNAME PF_RSET PF_RNR PF_SRNR PF_REASON PF_ACTION
280 %token TYPE SUBTYPE DIR ADDR1 ADDR2 ADDR3 ADDR4 RA TA
283 %token ID EID HID HID6 AID
286 %token IPV6 ICMPV6 AH ESP
289 %token ISO ESIS CLNP ISIS L1 L2 IIH LSP SNP CSNP PSNP
293 %token LANE LLC METAC BCC SC ILMIC OAMF4EC OAMF4SC
294 %token OAM OAMF4 CONNECTMSG METACONNECT
298 %token SIO OPC DPC SLS
304 %type <i> NUM action reason type subtype type_subtype dir
321 null: /* null */ { $$.q = qerr; }
324 | expr and term { gen_and($1.b, $3.b); $$ = $3; }
325 | expr and id { gen_and($1.b, $3.b); $$ = $3; }
326 | expr or term { gen_or($1.b, $3.b); $$ = $3; }
327 | expr or id { gen_or($1.b, $3.b); $$ = $3; }
329 and: AND { $$ = $<blk>0; }
331 or: OR { $$ = $<blk>0; }
334 | pnum { $$.b = gen_ncode(NULL, (bpf_u_int32)$1,
336 | paren pid ')' { $$ = $2; }
338 nid: ID { $$.b = gen_scode($1, $$.q = $<blk>0.q); }
339 | HID '/' NUM { $$.b = gen_mcode($1, NULL, $3,
341 | HID NETMASK HID { $$.b = gen_mcode($1, $3, 0,
344 /* Decide how to parse HID based on proto */
346 if ($$.q.addr == Q_PORT)
347 bpf_error("'port' modifier applied to ip host");
348 else if ($$.q.addr == Q_PORTRANGE)
349 bpf_error("'portrange' modifier applied to ip host");
350 else if ($$.q.addr == Q_PROTO)
351 bpf_error("'proto' modifier applied to ip host");
352 else if ($$.q.addr == Q_PROTOCHAIN)
353 bpf_error("'protochain' modifier applied to ip host");
354 $$.b = gen_ncode($1, 0, $$.q);
358 $$.b = gen_mcode6($1, NULL, $3,
361 bpf_error("'ip6addr/prefixlen' not supported "
362 "in this configuration");
367 $$.b = gen_mcode6($1, 0, 128,
370 bpf_error("'ip6addr' not supported "
371 "in this configuration");
375 $$.b = gen_ecode($1, $$.q = $<blk>0.q);
377 * $1 was allocated by "pcap_ether_aton()",
378 * so we must free it now that we're done
384 $$.b = gen_acode($1, $$.q = $<blk>0.q);
386 * $1 was allocated by "pcap_ether_aton()",
387 * so we must free it now that we're done
392 | not id { gen_not($2.b); $$ = $2; }
394 not: '!' { $$ = $<blk>0; }
396 paren: '(' { $$ = $<blk>0; }
399 | qid and id { gen_and($1.b, $3.b); $$ = $3; }
400 | qid or id { gen_or($1.b, $3.b); $$ = $3; }
402 qid: pnum { $$.b = gen_ncode(NULL, (bpf_u_int32)$1,
407 | not term { gen_not($2.b); $$ = $2; }
409 head: pqual dqual aqual { QSET($$.q, $1, $2, $3); }
410 | pqual dqual { QSET($$.q, $1, $2, Q_DEFAULT); }
411 | pqual aqual { QSET($$.q, $1, Q_DEFAULT, $2); }
412 | pqual PROTO { QSET($$.q, $1, Q_DEFAULT, Q_PROTO); }
413 | pqual PROTOCHAIN { QSET($$.q, $1, Q_DEFAULT, Q_PROTOCHAIN); }
414 | pqual ndaqual { QSET($$.q, $1, Q_DEFAULT, $2); }
416 rterm: head id { $$ = $2; }
417 | paren expr ')' { $$.b = $2.b; $$.q = $1.q; }
418 | pname { $$.b = gen_proto_abbrev($1); $$.q = qerr; }
419 | arth relop arth { $$.b = gen_relation($2, $1, $3, 0);
421 | arth irelop arth { $$.b = gen_relation($2, $1, $3, 1);
423 | other { $$.b = $1; $$.q = qerr; }
424 | atmtype { $$.b = gen_atmtype_abbrev($1); $$.q = qerr; }
425 | atmmultitype { $$.b = gen_atmmulti_abbrev($1); $$.q = qerr; }
426 | atmfield atmvalue { $$.b = $2.b; $$.q = qerr; }
427 | mtp2type { $$.b = gen_mtp2type_abbrev($1); $$.q = qerr; }
428 | mtp3field mtp3value { $$.b = $2.b; $$.q = qerr; }
430 /* protocol level qualifiers */
432 | { $$ = Q_DEFAULT; }
434 /* 'direction' qualifiers */
435 dqual: SRC { $$ = Q_SRC; }
436 | DST { $$ = Q_DST; }
437 | SRC OR DST { $$ = Q_OR; }
438 | DST OR SRC { $$ = Q_OR; }
439 | SRC AND DST { $$ = Q_AND; }
440 | DST AND SRC { $$ = Q_AND; }
441 | ADDR1 { $$ = Q_ADDR1; }
442 | ADDR2 { $$ = Q_ADDR2; }
443 | ADDR3 { $$ = Q_ADDR3; }
444 | ADDR4 { $$ = Q_ADDR4; }
448 /* address type qualifiers */
449 aqual: HOST { $$ = Q_HOST; }
450 | NET { $$ = Q_NET; }
451 | PORT { $$ = Q_PORT; }
452 | PORTRANGE { $$ = Q_PORTRANGE; }
454 /* non-directional address type qualifiers */
455 ndaqual: GATEWAY { $$ = Q_GATEWAY; }
457 pname: LINK { $$ = Q_LINK; }
459 | ARP { $$ = Q_ARP; }
460 | RARP { $$ = Q_RARP; }
461 | SCTP { $$ = Q_SCTP; }
462 | TCP { $$ = Q_TCP; }
463 | UDP { $$ = Q_UDP; }
464 | ICMP { $$ = Q_ICMP; }
465 | IGMP { $$ = Q_IGMP; }
466 | IGRP { $$ = Q_IGRP; }
467 | PIM { $$ = Q_PIM; }
468 | VRRP { $$ = Q_VRRP; }
469 | CARP { $$ = Q_CARP; }
470 | ATALK { $$ = Q_ATALK; }
471 | AARP { $$ = Q_AARP; }
472 | DECNET { $$ = Q_DECNET; }
473 | LAT { $$ = Q_LAT; }
474 | SCA { $$ = Q_SCA; }
475 | MOPDL { $$ = Q_MOPDL; }
476 | MOPRC { $$ = Q_MOPRC; }
477 | IPV6 { $$ = Q_IPV6; }
478 | ICMPV6 { $$ = Q_ICMPV6; }
480 | ESP { $$ = Q_ESP; }
481 | ISO { $$ = Q_ISO; }
482 | ESIS { $$ = Q_ESIS; }
483 | ISIS { $$ = Q_ISIS; }
484 | L1 { $$ = Q_ISIS_L1; }
485 | L2 { $$ = Q_ISIS_L2; }
486 | IIH { $$ = Q_ISIS_IIH; }
487 | LSP { $$ = Q_ISIS_LSP; }
488 | SNP { $$ = Q_ISIS_SNP; }
489 | PSNP { $$ = Q_ISIS_PSNP; }
490 | CSNP { $$ = Q_ISIS_CSNP; }
491 | CLNP { $$ = Q_CLNP; }
492 | STP { $$ = Q_STP; }
493 | IPX { $$ = Q_IPX; }
494 | NETBEUI { $$ = Q_NETBEUI; }
495 | RADIO { $$ = Q_RADIO; }
497 other: pqual TK_BROADCAST { $$ = gen_broadcast($1); }
498 | pqual TK_MULTICAST { $$ = gen_multicast($1); }
499 | LESS NUM { $$ = gen_less($2); }
500 | GREATER NUM { $$ = gen_greater($2); }
501 | CBYTE NUM byteop NUM { $$ = gen_byteop($3, $2, $4); }
502 | INBOUND { $$ = gen_inbound(0); }
503 | OUTBOUND { $$ = gen_inbound(1); }
504 | VLAN pnum { $$ = gen_vlan($2); }
505 | VLAN { $$ = gen_vlan(-1); }
506 | MPLS pnum { $$ = gen_mpls($2); }
507 | MPLS { $$ = gen_mpls(-1); }
508 | PPPOED { $$ = gen_pppoed(); }
509 | PPPOES { $$ = gen_pppoes(); }
511 | pqual p80211 { $$ = $2; }
514 pfvar: PF_IFNAME ID { $$ = gen_pf_ifname($2); }
515 | PF_RSET ID { $$ = gen_pf_ruleset($2); }
516 | PF_RNR NUM { $$ = gen_pf_rnr($2); }
517 | PF_SRNR NUM { $$ = gen_pf_srnr($2); }
518 | PF_REASON reason { $$ = gen_pf_reason($2); }
519 | PF_ACTION action { $$ = gen_pf_action($2); }
522 p80211: TYPE type SUBTYPE subtype
523 { $$ = gen_p80211_type($2 | $4,
524 IEEE80211_FC0_TYPE_MASK |
525 IEEE80211_FC0_SUBTYPE_MASK);
527 | TYPE type { $$ = gen_p80211_type($2,
528 IEEE80211_FC0_TYPE_MASK);
530 | SUBTYPE type_subtype { $$ = gen_p80211_type($2,
531 IEEE80211_FC0_TYPE_MASK |
532 IEEE80211_FC0_SUBTYPE_MASK);
534 | DIR dir { $$ = gen_p80211_fcdir($2); }
538 | ID { $$ = str2tok($1, ieee80211_types);
540 bpf_error("unknown 802.11 type name");
545 | ID { const struct tok *types = NULL;
548 if (ieee80211_type_subtypes[i].tok == NULL) {
549 /* Ran out of types */
550 bpf_error("unknown 802.11 type");
553 if ($<i>-1 == ieee80211_type_subtypes[i].type) {
554 types = ieee80211_type_subtypes[i].tok;
559 $$ = str2tok($1, types);
561 bpf_error("unknown 802.11 subtype name");
565 type_subtype: ID { int i;
567 if (ieee80211_type_subtypes[i].tok == NULL) {
568 /* Ran out of types */
569 bpf_error("unknown 802.11 type name");
572 $$ = str2tok($1, ieee80211_type_subtypes[i].tok);
574 $$ |= ieee80211_type_subtypes[i].type;
582 | ID { if (pcap_strcasecmp($1, "nods") == 0)
583 $$ = IEEE80211_FC1_DIR_NODS;
584 else if (pcap_strcasecmp($1, "tods") == 0)
585 $$ = IEEE80211_FC1_DIR_TODS;
586 else if (pcap_strcasecmp($1, "fromds") == 0)
587 $$ = IEEE80211_FC1_DIR_FROMDS;
588 else if (pcap_strcasecmp($1, "dstods") == 0)
589 $$ = IEEE80211_FC1_DIR_DSTODS;
591 bpf_error("unknown 802.11 direction");
595 reason: NUM { $$ = $1; }
596 | ID { $$ = pfreason_to_num($1); }
599 action: ID { $$ = pfaction_to_num($1); }
602 relop: '>' { $$ = BPF_JGT; }
603 | GEQ { $$ = BPF_JGE; }
604 | '=' { $$ = BPF_JEQ; }
606 irelop: LEQ { $$ = BPF_JGT; }
607 | '<' { $$ = BPF_JGE; }
608 | NEQ { $$ = BPF_JEQ; }
610 arth: pnum { $$ = gen_loadi($1); }
613 narth: pname '[' arth ']' { $$ = gen_load($1, $3, 1); }
614 | pname '[' arth ':' NUM ']' { $$ = gen_load($1, $3, $5); }
615 | arth '+' arth { $$ = gen_arth(BPF_ADD, $1, $3); }
616 | arth '-' arth { $$ = gen_arth(BPF_SUB, $1, $3); }
617 | arth '*' arth { $$ = gen_arth(BPF_MUL, $1, $3); }
618 | arth '/' arth { $$ = gen_arth(BPF_DIV, $1, $3); }
619 | arth '&' arth { $$ = gen_arth(BPF_AND, $1, $3); }
620 | arth '|' arth { $$ = gen_arth(BPF_OR, $1, $3); }
621 | arth LSH arth { $$ = gen_arth(BPF_LSH, $1, $3); }
622 | arth RSH arth { $$ = gen_arth(BPF_RSH, $1, $3); }
623 | '-' arth %prec UMINUS { $$ = gen_neg($2); }
624 | paren narth ')' { $$ = $2; }
625 | LEN { $$ = gen_loadlen(); }
627 byteop: '&' { $$ = '&'; }
634 | paren pnum ')' { $$ = $2; }
636 atmtype: LANE { $$ = A_LANE; }
637 | LLC { $$ = A_LLC; }
638 | METAC { $$ = A_METAC; }
639 | BCC { $$ = A_BCC; }
640 | OAMF4EC { $$ = A_OAMF4EC; }
641 | OAMF4SC { $$ = A_OAMF4SC; }
643 | ILMIC { $$ = A_ILMIC; }
645 atmmultitype: OAM { $$ = A_OAM; }
646 | OAMF4 { $$ = A_OAMF4; }
647 | CONNECTMSG { $$ = A_CONNECTMSG; }
648 | METACONNECT { $$ = A_METACONNECT; }
650 /* ATM field types quantifier */
651 atmfield: VPI { $$.atmfieldtype = A_VPI; }
652 | VCI { $$.atmfieldtype = A_VCI; }
654 atmvalue: atmfieldvalue
655 | relop NUM { $$.b = gen_atmfield_code($<blk>0.atmfieldtype, (bpf_int32)$2, (bpf_u_int32)$1, 0); }
656 | irelop NUM { $$.b = gen_atmfield_code($<blk>0.atmfieldtype, (bpf_int32)$2, (bpf_u_int32)$1, 1); }
657 | paren atmlistvalue ')' { $$.b = $2.b; $$.q = qerr; }
660 $$.atmfieldtype = $<blk>0.atmfieldtype;
661 if ($$.atmfieldtype == A_VPI ||
662 $$.atmfieldtype == A_VCI)
663 $$.b = gen_atmfield_code($$.atmfieldtype, (bpf_int32) $1, BPF_JEQ, 0);
666 atmlistvalue: atmfieldvalue
667 | atmlistvalue or atmfieldvalue { gen_or($1.b, $3.b); $$ = $3; }
669 /* MTP2 types quantifier */
670 mtp2type: FISU { $$ = M_FISU; }
671 | LSSU { $$ = M_LSSU; }
672 | MSU { $$ = M_MSU; }
674 /* MTP3 field types quantifier */
675 mtp3field: SIO { $$.mtp3fieldtype = M_SIO; }
676 | OPC { $$.mtp3fieldtype = M_OPC; }
677 | DPC { $$.mtp3fieldtype = M_DPC; }
678 | SLS { $$.mtp3fieldtype = M_SLS; }
680 mtp3value: mtp3fieldvalue
681 | relop NUM { $$.b = gen_mtp3field_code($<blk>0.mtp3fieldtype, (u_int)$2, (u_int)$1, 0); }
682 | irelop NUM { $$.b = gen_mtp3field_code($<blk>0.mtp3fieldtype, (u_int)$2, (u_int)$1, 1); }
683 | paren mtp3listvalue ')' { $$.b = $2.b; $$.q = qerr; }
685 mtp3fieldvalue: NUM {
686 $$.mtp3fieldtype = $<blk>0.mtp3fieldtype;
687 if ($$.mtp3fieldtype == M_SIO ||
688 $$.mtp3fieldtype == M_OPC ||
689 $$.mtp3fieldtype == M_DPC ||
690 $$.mtp3fieldtype == M_SLS )
691 $$.b = gen_mtp3field_code($$.mtp3fieldtype, (u_int) $1, BPF_JEQ, 0);
694 mtp3listvalue: mtp3fieldvalue
695 | mtp3listvalue or mtp3fieldvalue { gen_or($1.b, $3.b); $$ = $3; }