1 /*
2 * Copyright 2022-2023 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include "internal/quic_cc.h"
11 #include "internal/quic_types.h"
12
13 typedef struct ossl_cc_dummy_st {
14 size_t max_dgram_len;
15 size_t *p_diag_max_dgram_len;
16 } OSSL_CC_DUMMY;
17
18 static void dummy_update_diag(OSSL_CC_DUMMY *d);
19
dummy_new(OSSL_TIME (* now_cb)(void * arg),void * now_cb_arg)20 static OSSL_CC_DATA *dummy_new(OSSL_TIME (*now_cb)(void *arg),
21 void *now_cb_arg)
22 {
23 OSSL_CC_DUMMY *d = OPENSSL_zalloc(sizeof(*d));
24
25 if (d == NULL)
26 return NULL;
27
28 d->max_dgram_len = QUIC_MIN_INITIAL_DGRAM_LEN;
29 return (OSSL_CC_DATA *)d;
30 }
31
dummy_free(OSSL_CC_DATA * cc)32 static void dummy_free(OSSL_CC_DATA *cc)
33 {
34 OPENSSL_free(cc);
35 }
36
dummy_reset(OSSL_CC_DATA * cc)37 static void dummy_reset(OSSL_CC_DATA *cc)
38 {
39 }
40
dummy_set_input_params(OSSL_CC_DATA * cc,const OSSL_PARAM * params)41 static int dummy_set_input_params(OSSL_CC_DATA *cc, const OSSL_PARAM *params)
42 {
43 OSSL_CC_DUMMY *d = (OSSL_CC_DUMMY *)cc;
44 const OSSL_PARAM *p;
45 size_t value;
46
47 p = OSSL_PARAM_locate_const(params, OSSL_CC_OPTION_MAX_DGRAM_PAYLOAD_LEN);
48 if (p != NULL) {
49 if (!OSSL_PARAM_get_size_t(p, &value))
50 return 0;
51 if (value < QUIC_MIN_INITIAL_DGRAM_LEN)
52 return 0;
53
54 d->max_dgram_len = value;
55 dummy_update_diag(d);
56 }
57
58 return 1;
59 }
60
dummy_bind_diagnostic(OSSL_CC_DATA * cc,OSSL_PARAM * params)61 static int dummy_bind_diagnostic(OSSL_CC_DATA *cc, OSSL_PARAM *params)
62 {
63 OSSL_CC_DUMMY *d = (OSSL_CC_DUMMY *)cc;
64 const OSSL_PARAM *p;
65
66 p = OSSL_PARAM_locate_const(params, OSSL_CC_OPTION_MAX_DGRAM_PAYLOAD_LEN);
67 if (p != NULL) {
68 if (p->data_type != OSSL_PARAM_UNSIGNED_INTEGER
69 || p->data_size != sizeof(size_t))
70 return 0;
71
72 d->p_diag_max_dgram_len = p->data;
73 }
74
75 dummy_update_diag(d);
76 return 1;
77 }
78
dummy_unbind_diagnostic(OSSL_CC_DATA * cc,OSSL_PARAM * params)79 static int dummy_unbind_diagnostic(OSSL_CC_DATA *cc, OSSL_PARAM *params)
80 {
81 OSSL_CC_DUMMY *d = (OSSL_CC_DUMMY *)cc;
82
83 if (OSSL_PARAM_locate_const(params, OSSL_CC_OPTION_MAX_DGRAM_PAYLOAD_LEN)
84 != NULL)
85 d->p_diag_max_dgram_len = NULL;
86
87 return 1;
88 }
89
dummy_update_diag(OSSL_CC_DUMMY * d)90 static void dummy_update_diag(OSSL_CC_DUMMY *d)
91 {
92 if (d->p_diag_max_dgram_len != NULL)
93 *d->p_diag_max_dgram_len = d->max_dgram_len;
94 }
95
dummy_get_tx_allowance(OSSL_CC_DATA * cc)96 static uint64_t dummy_get_tx_allowance(OSSL_CC_DATA *cc)
97 {
98 return SIZE_MAX;
99 }
100
dummy_get_wakeup_deadline(OSSL_CC_DATA * cc)101 static OSSL_TIME dummy_get_wakeup_deadline(OSSL_CC_DATA *cc)
102 {
103 return ossl_time_infinite();
104 }
105
dummy_on_data_sent(OSSL_CC_DATA * cc,uint64_t num_bytes)106 static int dummy_on_data_sent(OSSL_CC_DATA *cc,
107 uint64_t num_bytes)
108 {
109 return 1;
110 }
111
dummy_on_data_acked(OSSL_CC_DATA * cc,const OSSL_CC_ACK_INFO * info)112 static int dummy_on_data_acked(OSSL_CC_DATA *cc,
113 const OSSL_CC_ACK_INFO *info)
114 {
115 return 1;
116 }
117
dummy_on_data_lost(OSSL_CC_DATA * cc,const OSSL_CC_LOSS_INFO * info)118 static int dummy_on_data_lost(OSSL_CC_DATA *cc,
119 const OSSL_CC_LOSS_INFO *info)
120 {
121 return 1;
122 }
123
dummy_on_data_lost_finished(OSSL_CC_DATA * cc,uint32_t flags)124 static int dummy_on_data_lost_finished(OSSL_CC_DATA *cc,
125 uint32_t flags)
126 {
127 return 1;
128 }
129
dummy_on_data_invalidated(OSSL_CC_DATA * cc,uint64_t num_bytes)130 static int dummy_on_data_invalidated(OSSL_CC_DATA *cc,
131 uint64_t num_bytes)
132 {
133 return 1;
134 }
135
136 const OSSL_CC_METHOD ossl_cc_dummy_method = {
137 dummy_new,
138 dummy_free,
139 dummy_reset,
140 dummy_set_input_params,
141 dummy_bind_diagnostic,
142 dummy_unbind_diagnostic,
143 dummy_get_tx_allowance,
144 dummy_get_wakeup_deadline,
145 dummy_on_data_sent,
146 dummy_on_data_acked,
147 dummy_on_data_lost,
148 dummy_on_data_lost_finished,
149 dummy_on_data_invalidated,
150 };
151