1 /*-
2  * Copyright (c) 2005 Andrey Simonenko
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  *   @(#)$Id: ipastat_limits.h,v 1.2 2011/01/23 18:42:35 simon Exp $
27  */
28 
29 #ifndef IPASTAT_LIMITS_H
30 #define IPASTAT_LIMITS_H
31 
32 #ifdef WITH_LIMITS
33 
34 #ifndef LIMIT_NSIZE
35 # define LIMIT_NSIZE	30
36 #endif
37 
38 #ifndef LIMIT_NALLOC
39 # define LIMIT_NALLOC	20
40 #endif
41 
42 struct rule;
43 struct opt_rule;
44 
45 #define LIMIT_FREE_NAME 0x01		/* Free 'name' in struct limit{} */
46 
47 /*
48  * limit{} section
49  */
50 struct limit {
51 	STAILQ_ENTRY(limit) link;	/* Link for list of limits. */
52 
53 	char		*name;		/* Name of this limit. */
54 	char		*info;		/* Info for this limit. */
55 	unsigned int	no;		/* Limit ordinal number. */
56 
57 	const struct st_list *st_list;	/* { st_list } */
58 
59 	unsigned int	free_mask;	/* LIMIT_FREE_xxx bits. */
60 
61 	int		inited;		/* Set if limit was initialized. */
62 };
63 
64 /*
65  * List of all limits in one rule.
66  */
67 STAILQ_HEAD(limits_list, limit);
68 
69 /*
70  * Limit in query: -q ... -l <name>
71  */
72 struct opt_limit {
73 	STAILQ_ENTRY(opt_limit) link;	/* For list building. */
74 
75 	const char	*name;		/* -l <name> */
76 	struct limit	*limit;		/* Corresponding limit structure. */
77 
78 	const struct opt_st *opt_st;	/* Corresponding -s ... */
79 
80 	void		 *data;		/* Opaque data. */
81 };
82 
83 /*
84  * Several limits in query: -q ... -l <name1> -l <name2> ...
85  */
86 STAILQ_HEAD(opt_limits, opt_limit);
87 
88 extern signed char dynamic_limits;
89 
90 extern ipa_mzone *limit_mzone;
91 
92 extern struct limit *alloc_limit(void);
93 
94 extern int	init_limits(const struct opt_rule *);
95 extern int	deinit_limits(const struct opt_rule *);
96 
97 extern void	free_limits(struct limits_list *);
98 extern int	copy_limits(struct rule *, const struct limits_list *);
99 
100 extern int	opt_limit_add(const char *);
101 extern int	opt_limits_parse(const struct opt_rule *);
102 extern void	opt_limits_free(const struct opt_limits *);
103 
104 extern struct limit *limit_by_name(const struct rule *, const char *);
105 
106 #endif /* WITH_LIMITS */
107 
108 extern char	has_opt_limits;
109 
110 #endif /* !IPASTAT_LIMITS_H */
111