xref: /illumos-gate/usr/src/uts/common/ipp/ipp_impl.h (revision 2d6eb4a5e0a47d30189497241345dc5466bb68ab)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2002-2003 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef	_IPP_IPP_IMPL_H
28 #define	_IPP_IPP_IMPL_H
29 
30 /*
31  * IP Policy Framework (IPPF) implementation detail.
32  *
33  * WARNING: Everything in this file is private, belonging to the IPPF
34  * subsystem.  The interfaces and declarations made here are subject
35  * to change.
36  */
37 
38 #include <sys/stream.h>
39 #include <sys/thread.h>
40 #include <ipp/ipp.h>
41 
42 #ifdef	__cplusplus
43 extern "C" {
44 #endif
45 
46 #ifdef	_KERNEL
47 
48 #define	IPP_ALIGN		64
49 
50 #define	IPP_NBUCKET		23
51 
52 #define	IPP_LOG2NACTION		16
53 #define	IPP_NACTION		(1 << IPP_LOG2NACTION)
54 
55 #define	IPP_LOG2NMOD		6
56 #define	IPP_NMOD		(1 << IPP_LOG2NMOD)
57 
58 #define	IPP_NCLASS		5
59 #define	IPP_NLOG		IPP_NMOD
60 
61 typedef	struct ipp_ref	ipp_ref_t;
62 
63 struct ipp_ref {
64 	ipp_ref_t		*ippr_nextp;
65 	uint_t			ippr_count;
66 	union {
67 	    ipp_mod_t		*u_mod;
68 	    ipp_action_t	*u_action;
69 	    void		*u_ptr;
70 	} ippr_u;
71 };
72 
73 #define	ippr_action	ippr_u.u_action
74 #define	ippr_mod	ippr_u.u_mod
75 #define	ippr_ptr	ippr_u.u_ptr
76 
77 typedef enum {
78 	IPP_MODSTATE_PROTO = 0x10,
79 	IPP_MODSTATE_AVAILABLE
80 } ipp_modstate_t;
81 
82 struct ipp_mod {
83 	ipp_mod_id_t	ippm_id;
84 	ipp_ops_t	*ippm_ops;
85 	ipp_ref_t	*ippm_action;
86 	ipp_modstate_t	ippm_state;
87 	krwlock_t	ippm_lock[1];
88 	uint32_t	ippm_hold_count;
89 	boolean_t	ippm_destruct_pending;
90 	char		ippm_name[MAXNAMELEN];
91 };
92 
93 typedef enum {
94 	IPP_ASTATE_PROTO = 0x20,
95 	IPP_ASTATE_CONFIG_PENDING,
96 	IPP_ASTATE_AVAILABLE
97 } ipp_astate_t;
98 
99 typedef struct cfglock {
100 	kmutex_t	cl_mutex[1];
101 	kcondvar_t	cl_cv[1];
102 	uint_t		cl_writers;
103 	boolean_t	cl_reader;
104 	kthread_id_t	cl_owner;
105 } cfglock_t;
106 
107 #ifndef	__lint
108 
109 #define	CL_READ		0
110 #define	CL_WRITE	1
111 
112 #define	CONFIG_LOCK_INIT(_clp)						\
113 	{								\
114 		mutex_init((_clp)->cl_mutex, NULL, MUTEX_DEFAULT,	\
115 		    (void *)ipltospl(LOCK_LEVEL));			\
116 		cv_init((_clp)->cl_cv, NULL, CV_DEFAULT, NULL);		\
117 	}
118 
119 #define	CONFIG_LOCK_FINI(_clp)						\
120 	{								\
121 		mutex_destroy((_clp)->cl_mutex);			\
122 		cv_destroy((_clp)->cl_cv);				\
123 	}
124 
125 #define	CONFIG_LOCK_ENTER(_clp, _rw)					\
126 	{								\
127 		mutex_enter((_clp)->cl_mutex);				\
128 		if ((_rw) == CL_WRITE) {				\
129 			while ((_clp)->cl_reader ||			\
130 			    ((_clp)->cl_owner != NULL &&		\
131 			    (_clp)->cl_owner != curthread))		\
132 				cv_wait((_clp)->cl_cv,			\
133 				    (_clp)->cl_mutex);			\
134 			(_clp)->cl_owner = curthread;			\
135 			(_clp)->cl_writers++;				\
136 		}							\
137 		else if ((_rw) == CL_READ) {				\
138 			while ((_clp)->cl_reader ||			\
139 			    (_clp)->cl_writers > 0) {			\
140 				ASSERT((_clp)->cl_owner != curthread);	\
141 				cv_wait((_clp)->cl_cv,			\
142 				    (_clp)->cl_mutex);			\
143 			}						\
144 			(_clp)->cl_owner = curthread;			\
145 			(_clp)->cl_reader = B_TRUE;			\
146 		}							\
147 		mutex_exit((_clp)->cl_mutex);				\
148 	}
149 
150 #define	CONFIG_LOCK_EXIT(_clp)						\
151 	{								\
152 		mutex_enter((_clp)->cl_mutex);				\
153 		if ((_clp)->cl_reader) {				\
154 			(_clp)->cl_reader = B_FALSE;			\
155 			(_clp)->cl_owner = NULL;			\
156 			cv_broadcast((_clp)->cl_cv);			\
157 		} else {						\
158 			ASSERT((_clp)->cl_writers != 0);		\
159 			(_clp)->cl_writers--;				\
160 			if ((_clp)->cl_writers == 0) {			\
161 				(_clp)->cl_owner = NULL;		\
162 				cv_broadcast((_clp)->cl_cv);		\
163 			}						\
164 		}							\
165 		mutex_exit((_clp)->cl_mutex);				\
166 	}
167 
168 #else	/* __lint */
169 
170 #define	CONFIG_LOCK_INIT(_clp)
171 #define	CONFIG_LOCK_FINI(_clp)
172 #define	CONFIG_LOCK_ENTER(_clp, _rw)
173 #define	CONFIG_LOCK_EXIT(_clp)
174 
175 #endif	/* __lint */
176 
177 struct ipp_action {
178 	ipp_action_id_t	ippa_id;
179 	ipp_mod_t	*ippa_mod;
180 	ipp_ref_t	*ippa_ref;
181 	ipp_ref_t	*ippa_refby;
182 	void		*ippa_ptr;
183 	uint32_t	ippa_packets;
184 	ipp_astate_t	ippa_state;
185 	krwlock_t	ippa_lock[1];
186 	uint32_t	ippa_hold_count;
187 	boolean_t	ippa_destruct_pending;
188 	cfglock_t	ippa_config_lock[1];
189 	boolean_t	ippa_nameless;
190 	char		ippa_name[MAXNAMELEN];
191 	ipp_ref_t	**ippa_condemned;
192 };
193 
194 struct ipp_class {
195 	ipp_action_id_t	ippc_aid;
196 	char		ippc_name[MAXNAMELEN];
197 };
198 
199 struct ipp_log {
200 	ipp_action_id_t	ippl_aid;
201 	timespec_t	ippl_begin;
202 	timespec_t	ippl_end;
203 	char		ippl_name[MAXNAMELEN];
204 };
205 
206 typedef struct ipp_stat_impl	ipp_stat_impl_t;
207 
208 struct ipp_stat_impl {
209 	void		*ippsi_data;
210 	kstat_t		*ippsi_ksp;
211 	int		ippsi_limit;
212 	int		ippsi_count;
213 	int		(*ippsi_update)(ipp_stat_t *, void *, int);
214 	void		*ippsi_arg;
215 	kmutex_t	ippsi_lock[1];
216 	char		ippsi_name[MAXNAMELEN];
217 };
218 
219 struct ipp_packet {
220 	mblk_t		*ippp_data;
221 	ipp_class_t	*ippp_class_array;
222 	uint_t		ippp_class_limit;
223 	uint_t		ippp_class_rindex;
224 	uint_t		ippp_class_windex;
225 	ipp_log_t	*ippp_log;
226 	uint_t		ippp_log_limit;
227 	uint_t		ippp_log_windex;
228 	void		*ippp_private;
229 	void		(*ippp_private_free)(void *);
230 };
231 
232 extern void		ipp_init(void);
233 
234 #endif	/* _KERNEL */
235 
236 #ifdef __cplusplus
237 }
238 #endif
239 
240 #endif /* _IPP_IPP_IMPL_H */
241