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annotate src/event/quic/ngx_event_quic_bpf_code.c @ 8946:56dec0d4e5b1 quic

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QUIC: avoid excessive buffer allocations in stream output. Previously, when a few bytes were send to a QUIC stream by the application, a 4K buffer was allocated for these bytes. Then a STREAM frame was created and that entire buffer was used as data for that frame. The frame with the buffer were in use up until the frame was acked by client. Meanwhile, when more bytes were send to the stream, more buffers were allocated and assigned as data to newer STREAM frames. In this scenario most buffer memory is unused. Now the unused part of the stream output buffer is available for further stream output while earlier parts of the buffer are waiting to be acked. This is achieved by splitting the output buffer.
author Roman Arutyunyan <arut@nginx.com>
date Fri, 24 Dec 2021 18:13:51 +0300
parents 6d1488b62dc5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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7df607cb2d11 QUIC: ngx_quic_bpf module.
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1 /* AUTO-GENERATED, DO NOT EDIT. */
7df607cb2d11 QUIC: ngx_quic_bpf module.
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2
7df607cb2d11 QUIC: ngx_quic_bpf module.
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3 #include <stddef.h>
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4 #include <stdint.h>
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5
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6 #include "ngx_bpf.h"
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7
7df607cb2d11 QUIC: ngx_quic_bpf module.
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8
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9 static ngx_bpf_reloc_t bpf_reloc_prog_ngx_quic_reuseport_helper[] = {
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10 { "ngx_quic_sockmap", 55 },
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11 };
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12
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13 static struct bpf_insn bpf_insn_prog_ngx_quic_reuseport_helper[] = {
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14 /* opcode dst src offset imm */
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15 { 0x79, BPF_REG_4, BPF_REG_1, (int16_t) 0, 0x0 },
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16 { 0x79, BPF_REG_3, BPF_REG_1, (int16_t) 8, 0x0 },
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17 { 0xbf, BPF_REG_2, BPF_REG_4, (int16_t) 0, 0x0 },
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18 { 0x7, BPF_REG_2, BPF_REG_0, (int16_t) 0, 0x8 },
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19 { 0x2d, BPF_REG_2, BPF_REG_3, (int16_t) 54, 0x0 },
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20 { 0xbf, BPF_REG_5, BPF_REG_4, (int16_t) 0, 0x0 },
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21 { 0x7, BPF_REG_5, BPF_REG_0, (int16_t) 0, 0x9 },
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22 { 0x2d, BPF_REG_5, BPF_REG_3, (int16_t) 51, 0x0 },
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23 { 0xb7, BPF_REG_5, BPF_REG_0, (int16_t) 0, 0x14 },
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24 { 0xb7, BPF_REG_0, BPF_REG_0, (int16_t) 0, 0x9 },
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25 { 0x71, BPF_REG_6, BPF_REG_2, (int16_t) 0, 0x0 },
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26 { 0x67, BPF_REG_6, BPF_REG_0, (int16_t) 0, 0x38 },
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27 { 0xc7, BPF_REG_6, BPF_REG_0, (int16_t) 0, 0x38 },
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28 { 0x65, BPF_REG_6, BPF_REG_0, (int16_t) 10, 0xffffffff },
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29 { 0xbf, BPF_REG_2, BPF_REG_4, (int16_t) 0, 0x0 },
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30 { 0x7, BPF_REG_2, BPF_REG_0, (int16_t) 0, 0xd },
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31 { 0x2d, BPF_REG_2, BPF_REG_3, (int16_t) 42, 0x0 },
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32 { 0xbf, BPF_REG_5, BPF_REG_4, (int16_t) 0, 0x0 },
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33 { 0x7, BPF_REG_5, BPF_REG_0, (int16_t) 0, 0xe },
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34 { 0x2d, BPF_REG_5, BPF_REG_3, (int16_t) 39, 0x0 },
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35 { 0xb7, BPF_REG_0, BPF_REG_0, (int16_t) 0, 0xe },
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36 { 0x71, BPF_REG_5, BPF_REG_2, (int16_t) 0, 0x0 },
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37 { 0xb7, BPF_REG_6, BPF_REG_0, (int16_t) 0, 0x8 },
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38 { 0x2d, BPF_REG_6, BPF_REG_5, (int16_t) 35, 0x0 },
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39 { 0xf, BPF_REG_5, BPF_REG_0, (int16_t) 0, 0x0 },
7df607cb2d11 QUIC: ngx_quic_bpf module.
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40 { 0xf, BPF_REG_4, BPF_REG_5, (int16_t) 0, 0x0 },
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41 { 0x2d, BPF_REG_4, BPF_REG_3, (int16_t) 32, 0x0 },
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42 { 0xbf, BPF_REG_4, BPF_REG_2, (int16_t) 0, 0x0 },
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43 { 0x7, BPF_REG_4, BPF_REG_0, (int16_t) 0, 0x9 },
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44 { 0x2d, BPF_REG_4, BPF_REG_3, (int16_t) 29, 0x0 },
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45 { 0x71, BPF_REG_4, BPF_REG_2, (int16_t) 1, 0x0 },
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46 { 0x67, BPF_REG_4, BPF_REG_0, (int16_t) 0, 0x38 },
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47 { 0x71, BPF_REG_3, BPF_REG_2, (int16_t) 2, 0x0 },
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48 { 0x67, BPF_REG_3, BPF_REG_0, (int16_t) 0, 0x30 },
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49 { 0x4f, BPF_REG_3, BPF_REG_4, (int16_t) 0, 0x0 },
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50 { 0x71, BPF_REG_4, BPF_REG_2, (int16_t) 3, 0x0 },
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51 { 0x67, BPF_REG_4, BPF_REG_0, (int16_t) 0, 0x28 },
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52 { 0x4f, BPF_REG_3, BPF_REG_4, (int16_t) 0, 0x0 },
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53 { 0x71, BPF_REG_4, BPF_REG_2, (int16_t) 4, 0x0 },
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54 { 0x67, BPF_REG_4, BPF_REG_0, (int16_t) 0, 0x20 },
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55 { 0x4f, BPF_REG_3, BPF_REG_4, (int16_t) 0, 0x0 },
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56 { 0x71, BPF_REG_4, BPF_REG_2, (int16_t) 5, 0x0 },
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57 { 0x67, BPF_REG_4, BPF_REG_0, (int16_t) 0, 0x18 },
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58 { 0x4f, BPF_REG_3, BPF_REG_4, (int16_t) 0, 0x0 },
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59 { 0x71, BPF_REG_4, BPF_REG_2, (int16_t) 6, 0x0 },
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60 { 0x67, BPF_REG_4, BPF_REG_0, (int16_t) 0, 0x10 },
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61 { 0x4f, BPF_REG_3, BPF_REG_4, (int16_t) 0, 0x0 },
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62 { 0x71, BPF_REG_4, BPF_REG_2, (int16_t) 7, 0x0 },
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63 { 0x67, BPF_REG_4, BPF_REG_0, (int16_t) 0, 0x8 },
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64 { 0x4f, BPF_REG_3, BPF_REG_4, (int16_t) 0, 0x0 },
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65 { 0x71, BPF_REG_2, BPF_REG_2, (int16_t) 8, 0x0 },
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66 { 0x4f, BPF_REG_3, BPF_REG_2, (int16_t) 0, 0x0 },
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67 { 0x7b, BPF_REG_10, BPF_REG_3, (int16_t) 65528, 0x0 },
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68 { 0xbf, BPF_REG_3, BPF_REG_10, (int16_t) 0, 0x0 },
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69 { 0x7, BPF_REG_3, BPF_REG_0, (int16_t) 0, 0xfffffff8 },
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70 { 0x18, BPF_REG_2, BPF_REG_0, (int16_t) 0, 0x0 },
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71 { 0x0, BPF_REG_0, BPF_REG_0, (int16_t) 0, 0x0 },
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72 { 0xb7, BPF_REG_4, BPF_REG_0, (int16_t) 0, 0x0 },
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73 { 0x85, BPF_REG_0, BPF_REG_0, (int16_t) 0, 0x52 },
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74 { 0xb7, BPF_REG_0, BPF_REG_0, (int16_t) 0, 0x1 },
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75 { 0x95, BPF_REG_0, BPF_REG_0, (int16_t) 0, 0x0 },
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76 };
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77
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78
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79 ngx_bpf_program_t ngx_quic_reuseport_helper = {
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80 .relocs = bpf_reloc_prog_ngx_quic_reuseport_helper,
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81 .nrelocs = sizeof(bpf_reloc_prog_ngx_quic_reuseport_helper)
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82 / sizeof(bpf_reloc_prog_ngx_quic_reuseport_helper[0]),
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83 .ins = bpf_insn_prog_ngx_quic_reuseport_helper,
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84 .nins = sizeof(bpf_insn_prog_ngx_quic_reuseport_helper)
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85 / sizeof(bpf_insn_prog_ngx_quic_reuseport_helper[0]),
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86 .license = "BSD",
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87 .type = BPF_PROG_TYPE_SK_REUSEPORT,
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88 };