aboutsummaryrefslogtreecommitdiffstats
path: root/ctrl/facemgr/src/util/policy.h
blob: e20af6560916994fec98e6975876ad586ea2505e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
/*
 * Copyright (c) 2017-2019 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * \file policy.h
 * \brief Policy description
 */
#ifndef HICN_POLICY_H
#define HICN_POLICY_H

#include <netinet/in.h> // INET*_ADDRSTRLEN
#include <string.h> // strcasecmp
#include "token.h"

/* POLICY TAG */

#define foreach_policy_tag      \
    /* Interface type */        \
    _(WIRED, 'E')               \
    _(WIFI, 'W')                \
    _(CELLULAR, 'C')            \
    /* QoS */                   \
    _(BEST_EFFORT, 'b')         \
    _(REALTIME, 'r')            \
    _(MULTIPATH, 'M')           \
    /* Security */              \
    _(TRUSTED, 'T')

typedef enum {
#define _(x, y) POLICY_TAG_ ## x,
foreach_policy_tag
#undef _
    POLICY_TAG_N
} policy_tag_t;

#define MAXSZ_POLICY_TAG_ 11
#define MAXSZ_POLICY_TAG MAXSZ_POLICY_TAG_ + 1

extern const char * policy_tag_str[];
extern const char policy_tag_short_str[];

static inline
policy_tag_t
policy_tag_from_str(const char * str)
{
#define _(x, y) if (strcasecmp(str, policy_tag_str[POLICY_TAG_ ## x] ) == 0) { return POLICY_TAG_ ## x; } else
foreach_policy_tag
#undef _
    return POLICY_TAG_N;
}

/* POLICY_TAGS */

typedef int policy_tags_t;

static inline
void policy_tags_add(policy_tags_t * tags, policy_tag_t tag)
{
    *tags |= (1 << tag);
}

static inline
void policy_tags_remove(policy_tags_t * tags, policy_tag_t tag)
{
    *tags &= ~(1 << tag);
}

static inline
int policy_tags_has(policy_tags_t tags, policy_tag_t tag)
{
    return tags & (1 << tag);
}

#define POLICY_TAGS_EMPTY 0

static inline
int
policy_tags_snprintf(char * s, size_t size, policy_tags_t tags)
{
#define _(x, y) s[POLICY_TAG_ ## x] = policy_tags_has(tags, POLICY_TAG_ ## x) ? y : '.';
foreach_policy_tag
#undef _
    s[POLICY_TAG_N] = '\0';
    return POLICY_TAG_N + 1;
}

#define MAXSZ_POLICY_TAGS_ POLICY_TAG_N
#define MAXSZ_POLICY_TAGS MAXSZ_POLICY_TAGS_ + 1

/* POLICY STATE */

/* TODO vs. weight */

#define foreach_policy_state    \
    _(NEUTRAL)                  \
    _(REQUIRE)                  \
    _(PREFER)                   \
    _(AVOID)                    \
    _(PROHIBIT)                 \
    _(N)

typedef enum {
#define _(x) POLICY_STATE_ ## x,
foreach_policy_state
#undef _
} policy_state_t;

#define MAXSZ_POLICY_STATE_ 8
#define MAXSZ_POLICY_STATE MAXSZ_POLICY_STATE_ + 1

extern const char * policy_state_str[];


/* POLICY TAG STATE */

typedef struct {
    policy_state_t state;
    uint8_t disabled;
} policy_tag_state_t;

#define MAXSZ_POLICY_TAG_STATE_ 8
#define MAXSZ_POLICY_TAG_STATE MAXSZ_POLICY_TAG_STATE_ + 1

int policy_tag_state_snprintf(char * s, size_t size, const policy_tag_state_t * tag_state);


/* INTERFACE STATS */

typedef struct {
    float throughput;
    float latency;
    float loss_rate;
} interface_stats_t;

#define INTERFACE_STATS_NONE {                          \
    .throughput = 0,                                    \
    .latency = 0,                                       \
    .loss_rate = 0,                                     \
}


/* POLICY STATS */

typedef struct {
    interface_stats_t wired;
    interface_stats_t wifi;
    interface_stats_t cellular;
    interface_stats_t all;
} policy_stats_t;

#define POLICY_STATS_NONE {                     \
    .wired    = INTERFACE_STATS_NONE,           \
    .wifi     = INTERFACE_STATS_NONE,           \
    .cellular = INTERFACE_STATS_NONE,           \
    .all      = INTERFACE_STATS_NONE,           \
}

typedef struct {
    uint32_t num_packets;
    uint32_t num_bytes;
    uint32_t num_losses;
    uint32_t latency_idle;
} interface_counters_t;

#define INTERFACE_COUNTERS_NONE {               \
    .num_packets = 0,                           \
    .num_bytes = 0,                             \
    .num_losses = 0,                            \
    .latency_idle = 0,                          \
}

typedef struct {
    interface_counters_t wired;
    interface_counters_t wifi;
    interface_counters_t cellular;
    interface_counters_t all;
    uint64_t last_update;
} policy_counters_t;

#define POLICY_COUNTERS_NONE (policy_counters_t) {      \
    .wired    = INTERFACE_COUNTERS_NONE,                \
    .wifi     = INTERFACE_COUNTERS_NONE,                \
    .cellular = INTERFACE_COUNTERS_NONE,                \
    .all      = INTERFACE_COUNTERS_NONE,                \
    .last_update = 0,                                   \
}

/* POLICY */

#define APP_NAME_LEN 128

typedef struct {
    char app_name[APP_NAME_LEN];
    policy_tag_state_t tags[POLICY_TAG_N];
    policy_stats_t stats;
} policy_t;

static const policy_t POLICY_NONE = {
    .app_name = { 0 },
    .tags = {
#define _(x, y) [POLICY_TAG_ ## x] = { POLICY_STATE_NEUTRAL, 0 },
foreach_policy_tag
#undef _
    },
    .stats = POLICY_STATS_NONE,
};


/* POLICY DESCRIPTION */

#define PFX_STRLEN 4 /* eg. /128 */

typedef struct {
    int family;
    union {
        char ipv4_prefix[INET_ADDRSTRLEN + PFX_STRLEN];
        char ipv6_prefix[INET6_ADDRSTRLEN + PFX_STRLEN];
    };
    policy_t policy;
} policy_description_t;

#endif /* HICN_POLICY_H */