annotate src/event/quic/ngx_event_quic_ack.c @ 8884:1798acc01970 quic

QUIC: optimized ack range processing. The sent queue is sorted by packet number. It is possible to avoid traversing full queue while handling ack ranges. It makes sense to start traversing from the queue head (i.e. check oldest packets first).
author Vladimir Homutov <vl@nginx.com>
date Fri, 15 Oct 2021 12:26:42 +0300
parents f3331deed357
children da112e7f8de6
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1
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2 /*
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3 * Copyright (C) Nginx, Inc.
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10 #include <ngx_event_quic_connection.h>
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11
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12
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13 #define NGX_QUIC_MAX_ACK_GAP 2
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14
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15 /* RFC 9002, 6.1.1. Packet Threshold: kPacketThreshold */
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16 #define NGX_QUIC_PKT_THR 3 /* packets */
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17 /* RFC 9002, 6.1.2. Time Threshold: kTimeThreshold, kGranularity */
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18 #define NGX_QUIC_TIME_THR 1.125
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19 #define NGX_QUIC_TIME_GRANULARITY 1 /* ms */
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20
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21 /* RFC 9002, 7.6.1. Duration: kPersistentCongestionThreshold */
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22 #define NGX_QUIC_PERSISTENT_CONGESTION_THR 3
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23
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24 #define ngx_quic_lost_threshold(qc) \
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25 ngx_max(NGX_QUIC_TIME_THR * ngx_max((qc)->latest_rtt, (qc)->avg_rtt), \
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26 NGX_QUIC_TIME_GRANULARITY)
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27
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28
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29 /* send time of ACK'ed packets */
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30 typedef struct {
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31 ngx_msec_t max_pn;
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32 ngx_msec_t oldest;
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33 ngx_msec_t newest;
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34 } ngx_quic_ack_stat_t;
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35
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36
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37 static void ngx_quic_rtt_sample(ngx_connection_t *c, ngx_quic_ack_frame_t *ack,
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38 enum ssl_encryption_level_t level, ngx_msec_t send_time);
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39 static ngx_int_t ngx_quic_handle_ack_frame_range(ngx_connection_t *c,
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40 ngx_quic_send_ctx_t *ctx, uint64_t min, uint64_t max,
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41 ngx_quic_ack_stat_t *st);
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42 static void ngx_quic_drop_ack_ranges(ngx_connection_t *c,
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43 ngx_quic_send_ctx_t *ctx, uint64_t pn);
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44 static ngx_int_t ngx_quic_detect_lost(ngx_connection_t *c,
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45 ngx_quic_ack_stat_t *st);
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46 static ngx_msec_t ngx_quic_pcg_duration(ngx_connection_t *c);
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47 static void ngx_quic_persistent_congestion(ngx_connection_t *c);
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48 static void ngx_quic_congestion_lost(ngx_connection_t *c,
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49 ngx_quic_frame_t *frame);
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50 static void ngx_quic_lost_handler(ngx_event_t *ev);
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52
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53 ngx_int_t
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54 ngx_quic_handle_ack_frame(ngx_connection_t *c, ngx_quic_header_t *pkt,
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55 ngx_quic_frame_t *f)
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56 {
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57 ssize_t n;
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58 u_char *pos, *end;
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59 uint64_t min, max, gap, range;
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60 ngx_uint_t i;
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61 ngx_quic_ack_stat_t send_time;
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62 ngx_quic_send_ctx_t *ctx;
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63 ngx_quic_ack_frame_t *ack;
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64 ngx_quic_connection_t *qc;
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65
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66 qc = ngx_quic_get_connection(c);
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67
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68 ctx = ngx_quic_get_send_ctx(qc, pkt->level);
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69
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70 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
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71 "quic ngx_quic_handle_ack_frame level:%d", pkt->level);
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72
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73 ack = &f->u.ack;
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74
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75 /*
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76 * RFC 9000, 19.3.1. ACK Ranges
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77 *
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78 * If any computed packet number is negative, an endpoint MUST
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79 * generate a connection error of type FRAME_ENCODING_ERROR.
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80 */
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81
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82 if (ack->first_range > ack->largest) {
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83 qc->error = NGX_QUIC_ERR_FRAME_ENCODING_ERROR;
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84 ngx_log_error(NGX_LOG_INFO, c->log, 0,
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85 "quic invalid first range in ack frame");
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86 return NGX_ERROR;
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87 }
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88
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89 min = ack->largest - ack->first_range;
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90 max = ack->largest;
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91
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92 send_time.oldest = NGX_TIMER_INFINITE;
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93 send_time.newest = NGX_TIMER_INFINITE;
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94
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95 if (ngx_quic_handle_ack_frame_range(c, ctx, min, max, &send_time)
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96 != NGX_OK)
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97 {
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98 return NGX_ERROR;
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99 }
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100
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101 /* RFC 9000, 13.2.4. Limiting Ranges by Tracking ACK Frames */
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102 if (ctx->largest_ack < max || ctx->largest_ack == NGX_QUIC_UNSET_PN) {
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103 ctx->largest_ack = max;
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104 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
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105 "quic updated largest received ack:%uL", max);
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106
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107 /*
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108 * RFC 9002, 5.1. Generating RTT Samples
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109 *
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110 * An endpoint generates an RTT sample on receiving an
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111 * ACK frame that meets the following two conditions:
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112 *
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113 * - the largest acknowledged packet number is newly acknowledged
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114 * - at least one of the newly acknowledged packets was ack-eliciting.
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115 */
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116
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117 if (send_time.max_pn != NGX_TIMER_INFINITE) {
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118 ngx_quic_rtt_sample(c, ack, pkt->level, send_time.max_pn);
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119 }
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120 }
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121
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122 if (f->data) {
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123 pos = f->data->buf->pos;
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124 end = f->data->buf->last;
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125
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126 } else {
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127 pos = NULL;
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128 end = NULL;
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129 }
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130
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131 for (i = 0; i < ack->range_count; i++) {
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132
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133 n = ngx_quic_parse_ack_range(pkt->log, pos, end, &gap, &range);
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134 if (n == NGX_ERROR) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
135 return NGX_ERROR;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
136 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
137 pos += n;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
138
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
139 if (gap + 2 > min) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
140 qc->error = NGX_QUIC_ERR_FRAME_ENCODING_ERROR;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
141 ngx_log_error(NGX_LOG_INFO, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
142 "quic invalid range:%ui in ack frame", i);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
143 return NGX_ERROR;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
144 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
145
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
146 max = min - gap - 2;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
147
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
148 if (range > max) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
149 qc->error = NGX_QUIC_ERR_FRAME_ENCODING_ERROR;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
150 ngx_log_error(NGX_LOG_INFO, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
151 "quic invalid range:%ui in ack frame", i);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
152 return NGX_ERROR;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
153 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
154
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
155 min = max - range;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
156
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
157 if (ngx_quic_handle_ack_frame_range(c, ctx, min, max, &send_time)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
158 != NGX_OK)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
159 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
160 return NGX_ERROR;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
161 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
162 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
163
8792
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
164 return ngx_quic_detect_lost(c, &send_time);
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
165 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
166
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
167
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
168 static void
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
169 ngx_quic_rtt_sample(ngx_connection_t *c, ngx_quic_ack_frame_t *ack,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
170 enum ssl_encryption_level_t level, ngx_msec_t send_time)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
171 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
172 ngx_msec_t latest_rtt, ack_delay, adjusted_rtt, rttvar_sample;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
173 ngx_quic_connection_t *qc;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
174
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
175 qc = ngx_quic_get_connection(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
176
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
177 latest_rtt = ngx_current_msec - send_time;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
178 qc->latest_rtt = latest_rtt;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
179
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
180 if (qc->min_rtt == NGX_TIMER_INFINITE) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
181 qc->min_rtt = latest_rtt;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
182 qc->avg_rtt = latest_rtt;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
183 qc->rttvar = latest_rtt / 2;
8792
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
184 qc->first_rtt = ngx_current_msec;
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
185
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
186 } else {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
187 qc->min_rtt = ngx_min(qc->min_rtt, latest_rtt);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
188
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
189 ack_delay = ack->delay * (1 << qc->ctp.ack_delay_exponent) / 1000;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
190
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
191 if (c->ssl->handshaked) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
192 ack_delay = ngx_min(ack_delay, qc->ctp.max_ack_delay);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
193 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
194
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
195 adjusted_rtt = latest_rtt;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
196
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
197 if (qc->min_rtt + ack_delay < latest_rtt) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
198 adjusted_rtt -= ack_delay;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
199 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
200
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
201 qc->avg_rtt = 0.875 * qc->avg_rtt + 0.125 * adjusted_rtt;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
202 rttvar_sample = ngx_abs((ngx_msec_int_t) (qc->avg_rtt - adjusted_rtt));
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
203 qc->rttvar = 0.75 * qc->rttvar + 0.25 * rttvar_sample;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
204 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
205
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
206 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
207 "quic rtt sample latest:%M min:%M avg:%M var:%M",
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
208 latest_rtt, qc->min_rtt, qc->avg_rtt, qc->rttvar);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
209 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
210
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
211
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
212 static ngx_int_t
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
213 ngx_quic_handle_ack_frame_range(ngx_connection_t *c, ngx_quic_send_ctx_t *ctx,
8792
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
214 uint64_t min, uint64_t max, ngx_quic_ack_stat_t *st)
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
215 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
216 ngx_uint_t found;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
217 ngx_queue_t *q;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
218 ngx_quic_frame_t *f;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
219 ngx_quic_connection_t *qc;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
220
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
221 qc = ngx_quic_get_connection(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
222
8792
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
223 st->max_pn = NGX_TIMER_INFINITE;
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
224 found = 0;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
225
8884
1798acc01970 QUIC: optimized ack range processing.
Vladimir Homutov <vl@nginx.com>
parents: 8823
diff changeset
226 q = ngx_queue_head(&ctx->sent);
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
227
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
228 while (q != ngx_queue_sentinel(&ctx->sent)) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
229
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
230 f = ngx_queue_data(q, ngx_quic_frame_t, queue);
8884
1798acc01970 QUIC: optimized ack range processing.
Vladimir Homutov <vl@nginx.com>
parents: 8823
diff changeset
231 q = ngx_queue_next(q);
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
232
8884
1798acc01970 QUIC: optimized ack range processing.
Vladimir Homutov <vl@nginx.com>
parents: 8823
diff changeset
233 if (f->pnum > max) {
1798acc01970 QUIC: optimized ack range processing.
Vladimir Homutov <vl@nginx.com>
parents: 8823
diff changeset
234 break;
1798acc01970 QUIC: optimized ack range processing.
Vladimir Homutov <vl@nginx.com>
parents: 8823
diff changeset
235 }
1798acc01970 QUIC: optimized ack range processing.
Vladimir Homutov <vl@nginx.com>
parents: 8823
diff changeset
236
1798acc01970 QUIC: optimized ack range processing.
Vladimir Homutov <vl@nginx.com>
parents: 8823
diff changeset
237 if (f->pnum >= min) {
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
238 ngx_quic_congestion_ack(c, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
239
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
240 switch (f->type) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
241 case NGX_QUIC_FT_ACK:
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
242 case NGX_QUIC_FT_ACK_ECN:
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
243 ngx_quic_drop_ack_ranges(c, ctx, f->u.ack.largest);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
244 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
245
8820
4009f120cad4 QUIC: eliminated stream type from ngx_quic_stream_frame_t.
Roman Arutyunyan <arut@nginx.com>
parents: 8797
diff changeset
246 case NGX_QUIC_FT_STREAM:
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
247 ngx_quic_handle_stream_ack(c, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
248 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
249 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
250
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
251 if (f->pnum == max) {
8792
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
252 st->max_pn = f->last;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
253 }
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
254
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
255 /* save earliest and latest send times of frames ack'ed */
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
256 if (st->oldest == NGX_TIMER_INFINITE || f->last < st->oldest) {
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
257 st->oldest = f->last;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
258 }
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
259
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
260 if (st->newest == NGX_TIMER_INFINITE || f->last > st->newest) {
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
261 st->newest = f->last;
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
262 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
263
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
264 ngx_queue_remove(&f->queue);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
265 ngx_quic_free_frame(c, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
266 found = 1;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
267 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
268 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
269
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
270 if (!found) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
271
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
272 if (max < ctx->pnum) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
273 /* duplicate ACK or ACK for non-ack-eliciting frame */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
274 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
275 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
276
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
277 ngx_log_error(NGX_LOG_INFO, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
278 "quic ACK for the packet not sent");
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
279
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
280 qc->error = NGX_QUIC_ERR_PROTOCOL_VIOLATION;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
281 qc->error_ftype = NGX_QUIC_FT_ACK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
282 qc->error_reason = "unknown packet number";
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
283
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
284 return NGX_ERROR;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
285 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
286
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
287 if (!qc->push.timer_set) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
288 ngx_post_event(&qc->push, &ngx_posted_events);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
289 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
290
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
291 qc->pto_count = 0;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
292
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
293 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
294 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
295
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
296
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
297 void
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
298 ngx_quic_congestion_ack(ngx_connection_t *c, ngx_quic_frame_t *f)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
299 {
8823
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
300 ngx_uint_t blocked;
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
301 ngx_msec_t timer;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
302 ngx_quic_congestion_t *cg;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
303 ngx_quic_connection_t *qc;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
304
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
305 if (f->plen == 0) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
306 return;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
307 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
308
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
309 qc = ngx_quic_get_connection(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
310 cg = &qc->congestion;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
311
8823
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
312 blocked = (cg->in_flight >= cg->window) ? 1 : 0;
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
313
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
314 cg->in_flight -= f->plen;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
315
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
316 timer = f->last - cg->recovery_start;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
317
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
318 if ((ngx_msec_int_t) timer <= 0) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
319 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
320 "quic congestion ack recovery win:%uz ss:%z if:%uz",
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
321 cg->window, cg->ssthresh, cg->in_flight);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
322
8823
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
323 goto done;
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
324 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
325
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
326 if (cg->window < cg->ssthresh) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
327 cg->window += f->plen;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
328
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
329 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
330 "quic congestion slow start win:%uz ss:%z if:%uz",
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
331 cg->window, cg->ssthresh, cg->in_flight);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
332
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
333 } else {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
334 cg->window += qc->tp.max_udp_payload_size * f->plen / cg->window;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
335
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
336 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
337 "quic congestion avoidance win:%uz ss:%z if:%uz",
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
338 cg->window, cg->ssthresh, cg->in_flight);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
339 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
340
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
341 /* prevent recovery_start from wrapping */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
342
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
343 timer = cg->recovery_start - ngx_current_msec + qc->tp.max_idle_timeout * 2;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
344
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
345 if ((ngx_msec_int_t) timer < 0) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
346 cg->recovery_start = ngx_current_msec - qc->tp.max_idle_timeout * 2;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
347 }
8823
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
348
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
349 done:
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
350
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
351 if (blocked && cg->in_flight < cg->window) {
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
352 ngx_post_event(&qc->push, &ngx_posted_events);
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
353 }
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
354 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
355
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
356
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
357 static void
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
358 ngx_quic_drop_ack_ranges(ngx_connection_t *c, ngx_quic_send_ctx_t *ctx,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
359 uint64_t pn)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
360 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
361 uint64_t base;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
362 ngx_uint_t i, smallest, largest;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
363 ngx_quic_ack_range_t *r;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
364
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
365 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
366 "quic ngx_quic_drop_ack_ranges pn:%uL largest:%uL"
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
367 " fr:%uL nranges:%ui", pn, ctx->largest_range,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
368 ctx->first_range, ctx->nranges);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
369
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
370 base = ctx->largest_range;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
371
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
372 if (base == NGX_QUIC_UNSET_PN) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
373 return;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
374 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
375
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
376 if (ctx->pending_ack != NGX_QUIC_UNSET_PN && pn >= ctx->pending_ack) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
377 ctx->pending_ack = NGX_QUIC_UNSET_PN;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
378 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
379
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
380 largest = base;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
381 smallest = largest - ctx->first_range;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
382
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
383 if (pn >= largest) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
384 ctx->largest_range = NGX_QUIC_UNSET_PN;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
385 ctx->first_range = 0;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
386 ctx->nranges = 0;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
387 return;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
388 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
389
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
390 if (pn >= smallest) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
391 ctx->first_range = largest - pn - 1;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
392 ctx->nranges = 0;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
393 return;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
394 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
395
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
396 for (i = 0; i < ctx->nranges; i++) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
397 r = &ctx->ranges[i];
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
398
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
399 largest = smallest - r->gap - 2;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
400 smallest = largest - r->range;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
401
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
402 if (pn >= largest) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
403 ctx->nranges = i;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
404 return;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
405 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
406 if (pn >= smallest) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
407 r->range = largest - pn - 1;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
408 ctx->nranges = i + 1;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
409 return;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
410 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
411 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
412 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
413
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
414
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
415 static ngx_int_t
8792
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
416 ngx_quic_detect_lost(ngx_connection_t *c, ngx_quic_ack_stat_t *st)
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
417 {
8792
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
418 ngx_uint_t i, nlost;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
419 ngx_msec_t now, wait, thr, oldest, newest;
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
420 ngx_queue_t *q;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
421 ngx_quic_frame_t *start;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
422 ngx_quic_send_ctx_t *ctx;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
423 ngx_quic_connection_t *qc;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
424
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
425 qc = ngx_quic_get_connection(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
426 now = ngx_current_msec;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
427 thr = ngx_quic_lost_threshold(qc);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
428
8792
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
429 /* send time of lost packets across all send contexts */
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
430 oldest = NGX_TIMER_INFINITE;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
431 newest = NGX_TIMER_INFINITE;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
432
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
433 nlost = 0;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
434
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
435 for (i = 0; i < NGX_QUIC_SEND_CTX_LAST; i++) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
436
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
437 ctx = &qc->send_ctx[i];
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
438
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
439 if (ctx->largest_ack == NGX_QUIC_UNSET_PN) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
440 continue;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
441 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
442
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
443 while (!ngx_queue_empty(&ctx->sent)) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
444
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
445 q = ngx_queue_head(&ctx->sent);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
446 start = ngx_queue_data(q, ngx_quic_frame_t, queue);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
447
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
448 if (start->pnum > ctx->largest_ack) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
449 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
450 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
451
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
452 wait = start->last + thr - now;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
453
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
454 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
455 "quic detect_lost pnum:%uL thr:%M wait:%i level:%d",
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
456 start->pnum, thr, (ngx_int_t) wait, start->level);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
457
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
458 if ((ngx_msec_int_t) wait > 0
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
459 && ctx->largest_ack - start->pnum < NGX_QUIC_PKT_THR)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
460 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
461 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
462 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
463
8792
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
464 if (start->last > qc->first_rtt) {
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
465
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
466 if (oldest == NGX_TIMER_INFINITE || start->last < oldest) {
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
467 oldest = start->last;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
468 }
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
469
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
470 if (newest == NGX_TIMER_INFINITE || start->last > newest) {
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
471 newest = start->last;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
472 }
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
473
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
474 nlost++;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
475 }
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
476
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
477 ngx_quic_resend_frames(c, ctx);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
478 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
479 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
480
8792
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
481
8797
4715f3e669f1 QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents: 8792
diff changeset
482 /* RFC 9002, 7.6.2. Establishing Persistent Congestion */
8792
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
483
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
484 /*
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
485 * Once acknowledged, packets are no longer tracked. Thus no send time
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
486 * information is available for such packets. This limits persistent
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
487 * congestion algorithm to packets mentioned within ACK ranges of the
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
488 * latest ACK frame.
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
489 */
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
490
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
491 if (st && nlost >= 2 && (st->newest < oldest || st->oldest > newest)) {
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
492
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
493 if (newest - oldest > ngx_quic_pcg_duration(c)) {
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
494 ngx_quic_persistent_congestion(c);
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
495 }
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
496 }
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
497
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
498 ngx_quic_set_lost_timer(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
499
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
500 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
501 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
502
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
503
8792
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
504 static ngx_msec_t
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
505 ngx_quic_pcg_duration(ngx_connection_t *c)
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
506 {
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
507 ngx_msec_t duration;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
508 ngx_quic_connection_t *qc;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
509
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
510 qc = ngx_quic_get_connection(c);
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
511
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
512 duration = qc->avg_rtt;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
513 duration += ngx_max(4 * qc->rttvar, NGX_QUIC_TIME_GRANULARITY);
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
514 duration += qc->ctp.max_ack_delay;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
515 duration *= NGX_QUIC_PERSISTENT_CONGESTION_THR;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
516
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
517 return duration;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
518 }
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
519
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
520
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
521 static void
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
522 ngx_quic_persistent_congestion(ngx_connection_t *c)
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
523 {
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
524 ngx_quic_congestion_t *cg;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
525 ngx_quic_connection_t *qc;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
526
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
527 qc = ngx_quic_get_connection(c);
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
528 cg = &qc->congestion;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
529
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
530 cg->recovery_start = ngx_current_msec;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
531 cg->window = qc->tp.max_udp_payload_size * 2;
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
532
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
533 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
534 "quic persistent congestion win:%uz", cg->window);
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
535 }
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
536
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
537
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
538 void
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
539 ngx_quic_resend_frames(ngx_connection_t *c, ngx_quic_send_ctx_t *ctx)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
540 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
541 ngx_queue_t *q;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
542 ngx_quic_frame_t *f, *start;
8761
225e9f1dfe7c QUIC: renamed stream variables from sn to qs.
Roman Arutyunyan <arut@nginx.com>
parents: 8760
diff changeset
543 ngx_quic_stream_t *qs;
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
544 ngx_quic_connection_t *qc;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
545
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
546 qc = ngx_quic_get_connection(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
547 q = ngx_queue_head(&ctx->sent);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
548 start = ngx_queue_data(q, ngx_quic_frame_t, queue);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
549
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
550 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
551 "quic resend packet pnum:%uL", start->pnum);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
552
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
553 ngx_quic_congestion_lost(c, start);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
554
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
555 do {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
556 f = ngx_queue_data(q, ngx_quic_frame_t, queue);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
557
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
558 if (f->pnum != start->pnum) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
559 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
560 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
561
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
562 q = ngx_queue_next(q);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
563
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
564 ngx_queue_remove(&f->queue);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
565
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
566 switch (f->type) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
567 case NGX_QUIC_FT_ACK:
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
568 case NGX_QUIC_FT_ACK_ECN:
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
569 if (ctx->level == ssl_encryption_application) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
570 /* force generation of most recent acknowledgment */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
571 ctx->send_ack = NGX_QUIC_MAX_ACK_GAP;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
572 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
573
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
574 ngx_quic_free_frame(c, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
575 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
576
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
577 case NGX_QUIC_FT_PING:
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
578 case NGX_QUIC_FT_PATH_RESPONSE:
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
579 case NGX_QUIC_FT_CONNECTION_CLOSE:
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
580 ngx_quic_free_frame(c, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
581 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
582
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
583 case NGX_QUIC_FT_MAX_DATA:
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
584 f->u.max_data.max_data = qc->streams.recv_max_data;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
585 ngx_quic_queue_frame(qc, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
586 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
587
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
588 case NGX_QUIC_FT_MAX_STREAMS:
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
589 case NGX_QUIC_FT_MAX_STREAMS2:
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
590 f->u.max_streams.limit = f->u.max_streams.bidi
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
591 ? qc->streams.client_max_streams_bidi
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
592 : qc->streams.client_max_streams_uni;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
593 ngx_quic_queue_frame(qc, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
594 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
595
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
596 case NGX_QUIC_FT_MAX_STREAM_DATA:
8761
225e9f1dfe7c QUIC: renamed stream variables from sn to qs.
Roman Arutyunyan <arut@nginx.com>
parents: 8760
diff changeset
597 qs = ngx_quic_find_stream(&qc->streams.tree,
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
598 f->u.max_stream_data.id);
8761
225e9f1dfe7c QUIC: renamed stream variables from sn to qs.
Roman Arutyunyan <arut@nginx.com>
parents: 8760
diff changeset
599 if (qs == NULL) {
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
600 ngx_quic_free_frame(c, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
601 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
602 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
603
8779
f52a2b77d406 QUIC: generic buffering for stream input.
Roman Arutyunyan <arut@nginx.com>
parents: 8763
diff changeset
604 f->u.max_stream_data.limit = qs->recv_max_data;
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
605 ngx_quic_queue_frame(qc, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
606 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
607
8820
4009f120cad4 QUIC: eliminated stream type from ngx_quic_stream_frame_t.
Roman Arutyunyan <arut@nginx.com>
parents: 8797
diff changeset
608 case NGX_QUIC_FT_STREAM:
8761
225e9f1dfe7c QUIC: renamed stream variables from sn to qs.
Roman Arutyunyan <arut@nginx.com>
parents: 8760
diff changeset
609 qs = ngx_quic_find_stream(&qc->streams.tree, f->u.stream.stream_id);
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
610
8761
225e9f1dfe7c QUIC: renamed stream variables from sn to qs.
Roman Arutyunyan <arut@nginx.com>
parents: 8760
diff changeset
611 if (qs && qs->connection->write->error) {
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
612 /* RESET_STREAM was sent */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
613 ngx_quic_free_frame(c, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
614 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
615 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
616
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
617 /* fall through */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
618
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
619 default:
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
620 ngx_queue_insert_tail(&ctx->frames, &f->queue);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
621 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
622
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
623 } while (q != ngx_queue_sentinel(&ctx->sent));
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
624
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
625 if (qc->closing) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
626 return;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
627 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
628
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
629 ngx_post_event(&qc->push, &ngx_posted_events);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
630 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
631
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
632
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
633 static void
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
634 ngx_quic_congestion_lost(ngx_connection_t *c, ngx_quic_frame_t *f)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
635 {
8823
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
636 ngx_uint_t blocked;
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
637 ngx_msec_t timer;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
638 ngx_quic_congestion_t *cg;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
639 ngx_quic_connection_t *qc;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
640
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
641 if (f->plen == 0) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
642 return;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
643 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
644
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
645 qc = ngx_quic_get_connection(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
646 cg = &qc->congestion;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
647
8823
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
648 blocked = (cg->in_flight >= cg->window) ? 1 : 0;
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
649
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
650 cg->in_flight -= f->plen;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
651 f->plen = 0;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
652
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
653 timer = f->last - cg->recovery_start;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
654
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
655 if ((ngx_msec_int_t) timer <= 0) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
656 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
657 "quic congestion lost recovery win:%uz ss:%z if:%uz",
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
658 cg->window, cg->ssthresh, cg->in_flight);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
659
8823
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
660 goto done;
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
661 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
662
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
663 cg->recovery_start = ngx_current_msec;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
664 cg->window /= 2;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
665
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
666 if (cg->window < qc->tp.max_udp_payload_size * 2) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
667 cg->window = qc->tp.max_udp_payload_size * 2;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
668 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
669
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
670 cg->ssthresh = cg->window;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
671
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
672 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
673 "quic congestion lost win:%uz ss:%z if:%uz",
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
674 cg->window, cg->ssthresh, cg->in_flight);
8823
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
675
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
676 done:
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
677
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
678 if (blocked && cg->in_flight < cg->window) {
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
679 ngx_post_event(&qc->push, &ngx_posted_events);
f3331deed357 QUIC: limit in-flight bytes by congestion window.
Roman Arutyunyan <arut@nginx.com>
parents: 8820
diff changeset
680 }
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
681 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
682
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
683
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
684 void
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
685 ngx_quic_set_lost_timer(ngx_connection_t *c)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
686 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
687 ngx_uint_t i;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
688 ngx_msec_t now;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
689 ngx_queue_t *q;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
690 ngx_msec_int_t lost, pto, w;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
691 ngx_quic_frame_t *f;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
692 ngx_quic_send_ctx_t *ctx;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
693 ngx_quic_connection_t *qc;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
694
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
695 qc = ngx_quic_get_connection(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
696 now = ngx_current_msec;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
697
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
698 lost = -1;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
699 pto = -1;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
700
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
701 for (i = 0; i < NGX_QUIC_SEND_CTX_LAST; i++) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
702 ctx = &qc->send_ctx[i];
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
703
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
704 if (ngx_queue_empty(&ctx->sent)) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
705 continue;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
706 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
707
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
708 if (ctx->largest_ack != NGX_QUIC_UNSET_PN) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
709 q = ngx_queue_head(&ctx->sent);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
710 f = ngx_queue_data(q, ngx_quic_frame_t, queue);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
711 w = (ngx_msec_int_t) (f->last + ngx_quic_lost_threshold(qc) - now);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
712
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
713 if (f->pnum <= ctx->largest_ack) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
714 if (w < 0 || ctx->largest_ack - f->pnum >= NGX_QUIC_PKT_THR) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
715 w = 0;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
716 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
717
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
718 if (lost == -1 || w < lost) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
719 lost = w;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
720 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
721 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
722 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
723
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
724 q = ngx_queue_last(&ctx->sent);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
725 f = ngx_queue_data(q, ngx_quic_frame_t, queue);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
726 w = (ngx_msec_int_t) (f->last + ngx_quic_pto(c, ctx) - now);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
727
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
728 if (w < 0) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
729 w = 0;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
730 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
731
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
732 if (pto == -1 || w < pto) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
733 pto = w;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
734 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
735 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
736
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
737 if (qc->pto.timer_set) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
738 ngx_del_timer(&qc->pto);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
739 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
740
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
741 if (lost != -1) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
742 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
743 "quic lost timer lost:%M", lost);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
744
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
745 qc->pto.handler = ngx_quic_lost_handler;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
746 ngx_add_timer(&qc->pto, lost);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
747 return;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
748 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
749
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
750 if (pto != -1) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
751 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
752 "quic lost timer pto:%M", pto);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
753
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
754 qc->pto.handler = ngx_quic_pto_handler;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
755 ngx_add_timer(&qc->pto, pto);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
756 return;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
757 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
758
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
759 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic lost timer unset");
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
760 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
761
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
762
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
763 ngx_msec_t
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
764 ngx_quic_pto(ngx_connection_t *c, ngx_quic_send_ctx_t *ctx)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
765 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
766 ngx_msec_t duration;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
767 ngx_quic_connection_t *qc;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
768
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
769 qc = ngx_quic_get_connection(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
770
8797
4715f3e669f1 QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents: 8792
diff changeset
771 /* RFC 9002, Appendix A.8. Setting the Loss Detection Timer */
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
772 duration = qc->avg_rtt;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
773
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
774 duration += ngx_max(4 * qc->rttvar, NGX_QUIC_TIME_GRANULARITY);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
775 duration <<= qc->pto_count;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
776
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
777 if (qc->congestion.in_flight == 0) { /* no in-flight packets */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
778 return duration;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
779 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
780
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
781 if (ctx->level == ssl_encryption_application && c->ssl->handshaked) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
782 duration += qc->ctp.max_ack_delay << qc->pto_count;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
783 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
784
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
785 return duration;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
786 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
787
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
788
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
789 static
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
790 void ngx_quic_lost_handler(ngx_event_t *ev)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
791 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
792 ngx_connection_t *c;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
793
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
794 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, 0, "quic lost timer");
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
795
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
796 c = ev->data;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
797
8792
004172345bdc QUIC: persistent congestion calculation.
Vladimir Homutov <vl@nginx.com>
parents: 8779
diff changeset
798 if (ngx_quic_detect_lost(c, NULL) != NGX_OK) {
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
799 ngx_quic_close_connection(c, NGX_ERROR);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
800 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
801
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
802 ngx_quic_connstate_dbg(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
803 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
804
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
805
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
806 void
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
807 ngx_quic_pto_handler(ngx_event_t *ev)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
808 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
809 ngx_uint_t i;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
810 ngx_msec_t now;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
811 ngx_queue_t *q, *next;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
812 ngx_connection_t *c;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
813 ngx_quic_frame_t *f;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
814 ngx_quic_send_ctx_t *ctx;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
815 ngx_quic_connection_t *qc;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
816
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
817 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, 0, "quic pto timer");
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
818
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
819 c = ev->data;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
820 qc = ngx_quic_get_connection(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
821 now = ngx_current_msec;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
822
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
823 for (i = 0; i < NGX_QUIC_SEND_CTX_LAST; i++) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
824
8763
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents: 8761
diff changeset
825 ctx = &qc->send_ctx[i];
8751
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
826
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
827 if (ngx_queue_empty(&ctx->sent)) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
828 continue;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
829 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
830
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
831 q = ngx_queue_head(&ctx->sent);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
832 f = ngx_queue_data(q, ngx_quic_frame_t, queue);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
833
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
834 if (f->pnum <= ctx->largest_ack
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
835 && ctx->largest_ack != NGX_QUIC_UNSET_PN)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
836 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
837 continue;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
838 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
839
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
840 if ((ngx_msec_int_t) (f->last + ngx_quic_pto(c, ctx) - now) > 0) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
841 continue;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
842 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
843
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
844 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
845 "quic pto %s pto_count:%ui",
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
846 ngx_quic_level_name(ctx->level), qc->pto_count);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
847
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
848 for (q = ngx_queue_head(&ctx->frames);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
849 q != ngx_queue_sentinel(&ctx->frames);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
850 /* void */)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
851 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
852 next = ngx_queue_next(q);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
853 f = ngx_queue_data(q, ngx_quic_frame_t, queue);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
854
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
855 if (f->type == NGX_QUIC_FT_PING) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
856 ngx_queue_remove(q);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
857 ngx_quic_free_frame(c, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
858 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
859
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
860 q = next;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
861 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
862
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
863 for (q = ngx_queue_head(&ctx->sent);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
864 q != ngx_queue_sentinel(&ctx->sent);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
865 /* void */)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
866 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
867 next = ngx_queue_next(q);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
868 f = ngx_queue_data(q, ngx_quic_frame_t, queue);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
869
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
870 if (f->type == NGX_QUIC_FT_PING) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
871 ngx_quic_congestion_lost(c, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
872 ngx_queue_remove(q);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
873 ngx_quic_free_frame(c, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
874 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
875
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
876 q = next;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
877 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
878
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
879 /* enforce 2 udp datagrams */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
880
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
881 f = ngx_quic_alloc_frame(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
882 if (f == NULL) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
883 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
884 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
885
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
886 f->level = ctx->level;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
887 f->type = NGX_QUIC_FT_PING;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
888 f->flush = 1;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
889
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
890 ngx_quic_queue_frame(qc, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
891
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
892 f = ngx_quic_alloc_frame(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
893 if (f == NULL) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
894 break;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
895 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
896
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
897 f->level = ctx->level;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
898 f->type = NGX_QUIC_FT_PING;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
899
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
900 ngx_quic_queue_frame(qc, f);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
901 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
902
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
903 qc->pto_count++;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
904
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
905 ngx_quic_connstate_dbg(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
906 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
907
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
908
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
909 ngx_int_t
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
910 ngx_quic_ack_packet(ngx_connection_t *c, ngx_quic_header_t *pkt)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
911 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
912 uint64_t base, largest, smallest, gs, ge, gap, range, pn;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
913 uint64_t prev_pending;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
914 ngx_uint_t i, nr;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
915 ngx_quic_send_ctx_t *ctx;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
916 ngx_quic_ack_range_t *r;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
917 ngx_quic_connection_t *qc;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
918
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
919 c->log->action = "preparing ack";
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
920
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
921 qc = ngx_quic_get_connection(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
922
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
923 ctx = ngx_quic_get_send_ctx(qc, pkt->level);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
924
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
925 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
926 "quic ngx_quic_ack_packet pn:%uL largest %L fr:%uL"
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
927 " nranges:%ui", pkt->pn, (int64_t) ctx->largest_range,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
928 ctx->first_range, ctx->nranges);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
929
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
930 prev_pending = ctx->pending_ack;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
931
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
932 if (pkt->need_ack) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
933
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
934 ngx_post_event(&qc->push, &ngx_posted_events);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
935
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
936 if (ctx->send_ack == 0) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
937 ctx->ack_delay_start = ngx_current_msec;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
938 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
939
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
940 ctx->send_ack++;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
941
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
942 if (ctx->pending_ack == NGX_QUIC_UNSET_PN
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
943 || ctx->pending_ack < pkt->pn)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
944 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
945 ctx->pending_ack = pkt->pn;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
946 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
947 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
948
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
949 base = ctx->largest_range;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
950 pn = pkt->pn;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
951
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
952 if (base == NGX_QUIC_UNSET_PN) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
953 ctx->largest_range = pn;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
954 ctx->largest_received = pkt->received;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
955 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
956 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
957
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
958 if (base == pn) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
959 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
960 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
961
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
962 largest = base;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
963 smallest = largest - ctx->first_range;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
964
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
965 if (pn > base) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
966
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
967 if (pn - base == 1) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
968 ctx->first_range++;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
969 ctx->largest_range = pn;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
970 ctx->largest_received = pkt->received;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
971
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
972 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
973
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
974 } else {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
975 /* new gap in front of current largest */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
976
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
977 /* no place for new range, send current range as is */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
978 if (ctx->nranges == NGX_QUIC_MAX_RANGES) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
979
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
980 if (prev_pending != NGX_QUIC_UNSET_PN) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
981 if (ngx_quic_send_ack(c, ctx) != NGX_OK) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
982 return NGX_ERROR;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
983 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
984 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
985
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
986 if (prev_pending == ctx->pending_ack || !pkt->need_ack) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
987 ctx->pending_ack = NGX_QUIC_UNSET_PN;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
988 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
989 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
990
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
991 gap = pn - base - 2;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
992 range = ctx->first_range;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
993
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
994 ctx->first_range = 0;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
995 ctx->largest_range = pn;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
996 ctx->largest_received = pkt->received;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
997
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
998 /* packet is out of order, force send */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
999 if (pkt->need_ack) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1000 ctx->send_ack = NGX_QUIC_MAX_ACK_GAP;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1001 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1002
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1003 i = 0;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1004
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1005 goto insert;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1006 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1007 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1008
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1009 /* pn < base, perform lookup in existing ranges */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1010
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1011 /* packet is out of order */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1012 if (pkt->need_ack) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1013 ctx->send_ack = NGX_QUIC_MAX_ACK_GAP;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1014 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1015
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1016 if (pn >= smallest && pn <= largest) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1017 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1018 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1019
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1020 #if (NGX_SUPPRESS_WARN)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1021 r = NULL;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1022 #endif
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1023
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1024 for (i = 0; i < ctx->nranges; i++) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1025 r = &ctx->ranges[i];
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1026
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1027 ge = smallest - 1;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1028 gs = ge - r->gap;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1029
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1030 if (pn >= gs && pn <= ge) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1031
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1032 if (gs == ge) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1033 /* gap size is exactly one packet, now filled */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1034
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1035 /* data moves to previous range, current is removed */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1036
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1037 if (i == 0) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1038 ctx->first_range += r->range + 2;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1039
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1040 } else {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1041 ctx->ranges[i - 1].range += r->range + 2;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1042 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1043
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1044 nr = ctx->nranges - i - 1;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1045 if (nr) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1046 ngx_memmove(&ctx->ranges[i], &ctx->ranges[i + 1],
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1047 sizeof(ngx_quic_ack_range_t) * nr);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1048 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1049
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1050 ctx->nranges--;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1051
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1052 } else if (pn == gs) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1053 /* current gap shrinks from tail (current range grows) */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1054 r->gap--;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1055 r->range++;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1056
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1057 } else if (pn == ge) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1058 /* current gap shrinks from head (previous range grows) */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1059 r->gap--;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1060
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1061 if (i == 0) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1062 ctx->first_range++;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1063
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1064 } else {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1065 ctx->ranges[i - 1].range++;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1066 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1067
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1068 } else {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1069 /* current gap is split into two parts */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1070
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1071 gap = ge - pn - 1;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1072 range = 0;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1073
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1074 if (ctx->nranges == NGX_QUIC_MAX_RANGES) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1075 if (prev_pending != NGX_QUIC_UNSET_PN) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1076 if (ngx_quic_send_ack(c, ctx) != NGX_OK) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1077 return NGX_ERROR;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1078 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1079 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1080
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1081 if (prev_pending == ctx->pending_ack || !pkt->need_ack) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1082 ctx->pending_ack = NGX_QUIC_UNSET_PN;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1083 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1084 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1085
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1086 r->gap = pn - gs - 1;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1087 goto insert;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1088 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1089
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1090 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1091 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1092
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1093 largest = smallest - r->gap - 2;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1094 smallest = largest - r->range;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1095
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1096 if (pn >= smallest && pn <= largest) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1097 /* this packet number is already known */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1098 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1099 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1100
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1101 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1102
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1103 if (pn == smallest - 1) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1104 /* extend first or last range */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1105
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1106 if (i == 0) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1107 ctx->first_range++;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1108
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1109 } else {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1110 r->range++;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1111 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1112
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1113 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1114 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1115
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1116 /* nothing found, add new range at the tail */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1117
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1118 if (ctx->nranges == NGX_QUIC_MAX_RANGES) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1119 /* packet is too old to keep it */
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1120
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1121 if (pkt->need_ack) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1122 return ngx_quic_send_ack_range(c, ctx, pn, pn);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1123 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1124
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1125 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1126 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1127
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1128 gap = smallest - 2 - pn;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1129 range = 0;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1130
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1131 insert:
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1132
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1133 if (ctx->nranges < NGX_QUIC_MAX_RANGES) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1134 ctx->nranges++;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1135 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1136
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1137 ngx_memmove(&ctx->ranges[i + 1], &ctx->ranges[i],
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1138 sizeof(ngx_quic_ack_range_t) * (ctx->nranges - i - 1));
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1139
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1140 ctx->ranges[i].gap = gap;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1141 ctx->ranges[i].range = range;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1142
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1143 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1144 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1145
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1146
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1147 ngx_int_t
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1148 ngx_quic_generate_ack(ngx_connection_t *c, ngx_quic_send_ctx_t *ctx)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1149 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1150 ngx_msec_t delay;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1151 ngx_quic_connection_t *qc;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1152
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1153 if (!ctx->send_ack) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1154 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1155 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1156
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1157 if (ctx->level == ssl_encryption_application) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1158
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1159 delay = ngx_current_msec - ctx->ack_delay_start;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1160 qc = ngx_quic_get_connection(c);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1161
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1162 if (ctx->send_ack < NGX_QUIC_MAX_ACK_GAP
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1163 && delay < qc->tp.max_ack_delay)
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1164 {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1165 if (!qc->push.timer_set && !qc->closing) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1166 ngx_add_timer(&qc->push,
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1167 qc->tp.max_ack_delay - delay);
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1168 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1169
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1170 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1171 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1172 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1173
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1174 if (ngx_quic_send_ack(c, ctx) != NGX_OK) {
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1175 return NGX_ERROR;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1176 }
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1177
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1178 ctx->send_ack = 0;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1179
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1180 return NGX_OK;
bc910a5ec737 QUIC: separate files for output and ack related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
1181 }