Mercurial > hg > nginx-quic
comparison src/event/quic/ngx_event_quic.c @ 8442:b3f6ad181df4 quic
QUIC: refactored CRYPTO and STREAM buffer ordering.
Generic function ngx_quic_order_bufs() is introduced. This function creates
and maintains a chain of buffers with holes. Holes are marked with b->sync
flag. Several buffers and holes in this chain may share the same underlying
memory buffer.
When processing STREAM frames with this function, frame data is copied only
once to the right place in the stream input chain. Previously data could
be copied twice. First when buffering an out-of-order frame data, and then
when filling stream buffer from ordered frame queue. Now there's only one
data chain for both tasks.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Tue, 25 May 2021 13:55:12 +0300 |
parents | 5186ee5a94b9 |
children | af33d1ef1c3c |
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8441:81d491f0dc8c | 8442:b3f6ad181df4 |
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263 } | 263 } |
264 | 264 |
265 qc->send_ctx[0].level = ssl_encryption_initial; | 265 qc->send_ctx[0].level = ssl_encryption_initial; |
266 qc->send_ctx[1].level = ssl_encryption_handshake; | 266 qc->send_ctx[1].level = ssl_encryption_handshake; |
267 qc->send_ctx[2].level = ssl_encryption_application; | 267 qc->send_ctx[2].level = ssl_encryption_application; |
268 | |
269 for (i = 0; i < NGX_QUIC_ENCRYPTION_LAST; i++) { | |
270 ngx_queue_init(&qc->crypto[i].frames); | |
271 } | |
272 | 268 |
273 ngx_queue_init(&qc->free_frames); | 269 ngx_queue_init(&qc->free_frames); |
274 | 270 |
275 qc->avg_rtt = NGX_QUIC_INITIAL_RTT; | 271 qc->avg_rtt = NGX_QUIC_INITIAL_RTT; |
276 qc->rttvar = NGX_QUIC_INITIAL_RTT / 2; | 272 qc->rttvar = NGX_QUIC_INITIAL_RTT / 2; |
1020 | 1016 |
1021 qc->pto_count = 0; | 1017 qc->pto_count = 0; |
1022 | 1018 |
1023 ctx = ngx_quic_get_send_ctx(qc, level); | 1019 ctx = ngx_quic_get_send_ctx(qc, level); |
1024 | 1020 |
1021 ngx_quic_free_bufs(c, ctx->crypto); | |
1022 | |
1025 while (!ngx_queue_empty(&ctx->sent)) { | 1023 while (!ngx_queue_empty(&ctx->sent)) { |
1026 q = ngx_queue_head(&ctx->sent); | 1024 q = ngx_queue_head(&ctx->sent); |
1027 ngx_queue_remove(q); | 1025 ngx_queue_remove(q); |
1028 | 1026 |
1029 f = ngx_queue_data(q, ngx_quic_frame_t, queue); | 1027 f = ngx_queue_data(q, ngx_quic_frame_t, queue); |