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 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _IPP_METERS_METER_IMPL_H
28 #define	_IPP_METERS_METER_IMPL_H
29 
30 #include <sys/types.h>
31 #include <sys/cmn_err.h>
32 #include <sys/debug.h>
33 #include <sys/spl.h>
34 #include <ipp/ipp.h>
35 #include <inet/ipp_common.h>
36 #include <ipp/meters/meter.h>
37 
38 #ifdef	__cplusplus
39 extern "C" {
40 #endif
41 
42 /* Header file for implementation of all the metering modules */
43 
44 #ifdef	_KERNEL
45 
46 /* for a colour aware meter */
47 enum meter_colour {
48 	TOKENMT_GREEN = 0x01,
49 	TOKENMT_YELLOW = 0x02,
50 	TOKENMT_RED = 0x04
51 };
52 
53 /* If yellow action is not provided, set it to infinity */
54 #define	TOKENMT_NO_ACTION	0x7fffffff
55 
56 #define	METER_SEC_TO_NSEC	1000000000
57 #define	METER_MSEC_TO_NSEC	1000000
58 
59 #define	_TOKENMT_DEBUG
60 #define	_TSWTCL_DEBUG
61 
62 #ifdef _TOKENMT_DEBUG
63 #define	tokenmt0dbg(a)		printf a
64 #define	tokenmt1dbg(a)		if (tokenmt_debug > 2) printf a
65 #define	tokenmt2dbg(a)		if (tokenmt_debug > 3) printf a
66 #else
67 #define	tokenmt0dbg(a)		/*  */
68 #define	tokenmt1dbg(a)		/*  */
69 #define	tokenmt2dbg(a)		/*  */
70 #endif /* _TOKENMT_DEBUG */
71 
72 #ifdef _TSWTCL_DEBUG
73 #define	tswtcl0dbg(a)		printf a
74 #define	tswtcl1dbg(a)		if (tswtcl_debug > 2) printf a
75 #define	tswtcl2dbg(a)		if (tswtcl_debug > 3) printf a
76 #else
77 #define	tswtcl0dbg(a)		/*  */
78 #define	tswtcl1dbg(a)		/*  */
79 #define	tswtcl2dbg(a)		/*  */
80 #endif /* _TSWTCL_DEBUG */
81 
82 #define	SRTCL_TOKENMT		0x01
83 #define	TRTCL_TOKENMT		0x02
84 
85 #define	DROP_PRECD_MASK		0x07
86 
87 /* Stat structure for the tokenmts */
88 typedef struct meter_stat_t {
89 	ipp_named_t red_bits;
90 	ipp_named_t yellow_bits;
91 	ipp_named_t green_bits;
92 	ipp_named_t red_packets;
93 	ipp_named_t yellow_packets;
94 	ipp_named_t green_packets;
95 	ipp_named_t epackets;
96 } meter_stat_t;
97 
98 #define	TOKENMT_STATS_STRING	"tokenmt statistics"
99 #define	TSWTCL_STATS_STRING	"tswtclmtr statistics"
100 #define	METER_STATS_COUNT	7
101 
102 /* Configuration paratokenmts for tokenmt */
103 typedef struct tokenmt_cfg_s {
104 
105 	/* Next action for Green, Yellow and Red packets */
106 	ipp_action_id_t red_action;
107 	ipp_action_id_t yellow_action;
108 	ipp_action_id_t green_action;
109 
110 	/* Meter type  - SRTCL_TOKENMT or TRTCL_TOKENMT */
111 	uint_t tokenmt_type;
112 
113 	/* Committed rate in Kb/sec */
114 	uint32_t committed_rate;
115 	uint32_t peak_rate;
116 
117 	/* Committed and Peak burst sizes in bits */
118 	uint32_t committed_burst;
119 	uint32_t peak_burst;
120 
121 	/* Needs stats or not */
122 	boolean_t stats;
123 
124 	/* Meter Colour aware or not */
125 	boolean_t colour_aware;
126 
127 	/* Meter dscp to colour mapping, if colour aware */
128 	enum meter_colour dscp_to_colour[64];
129 
130 	/* timer */
131 	timeout_id_t timer;
132 }tokenmt_cfg_t;
133 
134 typedef struct tokenmt_data_s {
135 
136 	/* stats for this instance */
137 	ipp_stat_t *stats;
138 
139 	/* # packets classified as Red, Yellow and Green for this instance */
140 	uint64_t red_packets;
141 	uint64_t yellow_packets;
142 	uint64_t green_packets;
143 	uint64_t red_bits;
144 	uint64_t yellow_bits;
145 	uint64_t green_bits;
146 	uint64_t epackets;
147 
148 	/* configured paratokenmts */
149 	tokenmt_cfg_t *cfg_parms;
150 
151 	/* No. of tokens at the committed and peak burst */
152 	uint64_t committed_tokens;
153 	uint64_t peak_tokens;
154 
155 	/* For replenishing the token buckets */
156 	uint64_t last_seen;
157 
158 	/* Lock to protect data structures */
159 	kmutex_t tokenmt_lock;
160 } tokenmt_data_t;
161 
162 typedef struct tswtcl_cfg_s {
163 
164 	/* Next action for Green, Yellow and Red packets */
165 	ipp_action_id_t red_action;
166 	ipp_action_id_t yellow_action;
167 	ipp_action_id_t green_action;
168 
169 	/* Committed and Peak rates in KB/sec */
170 	uint32_t committed_rate;
171 	uint32_t peak_rate;
172 
173 	/* Window size in ms */
174 	uint32_t window;
175 
176 	/* Need stats or not */
177 	boolean_t stats;
178 
179 	/* For aiding computations */
180 	uint64_t nsecwindow;
181 	uint32_t pminusc;
182 }tswtcl_cfg_t;
183 
184 typedef struct tswtcl_data_s {
185 
186 	/* stats for this instance */
187 	ipp_stat_t *stats;
188 
189 	/* Computed average rate */
190 	uint32_t avg_rate;
191 
192 	/* Front of the sliding window */
193 	hrtime_t win_front;
194 
195 	/* # packets classified as Red, Yellow and Green for this instance */
196 	uint64_t red_packets;
197 	uint64_t yellow_packets;
198 	uint64_t green_packets;
199 	uint64_t red_bits;
200 	uint64_t yellow_bits;
201 	uint64_t green_bits;
202 	uint64_t epackets;
203 
204 	/* Configured paramters */
205 	tswtcl_cfg_t *cfg_parms;
206 
207 	/* Lock to protect data structures */
208 	kmutex_t tswtcl_lock;
209 } tswtcl_data_t;
210 
211 #define	TOKENMT_DATA_SZ		sizeof (tokenmt_data_t)
212 #define	TOKENMT_CFG_SZ		sizeof (tokenmt_cfg_t)
213 #define	TSWTCL_DATA_SZ		sizeof (tswtcl_data_t)
214 #define	TSWTCL_CFG_SZ		sizeof (tswtcl_cfg_t)
215 
216 extern int tokenmt_process(mblk_t **, tokenmt_data_t *, ipp_action_id_t *);
217 extern int tswtcl_process(mblk_t **, tswtcl_data_t *, ipp_action_id_t *);
218 
219 #endif /* _KERNEL */
220 
221 #ifdef	__cplusplus
222 }
223 #endif
224 
225 #endif /* _IPP_METERS_METER_IMPL_H */
226