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view src/event/quic/ngx_event_quic_bpf_code.c @ 8911:b09f055daa4e quic

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QUIC: fixed handling of RETIRE_CONNECTION_ID frame. Previously, the retired socket was not closed if it didn't match active or backup. New sockets could not be created (due to count limit), since retired socket was not closed before calling ngx_quic_create_sockets(). When replacing retired socket, new socket is only requested after closing old one, to avoid hitting the limit on the number of active connection ids. Together with added restrictions, this fixes an issue when a current socket could be closed during migration, recreated and erroneously reused leading to null pointer dereference.
author Vladimir Homutov <vl@nginx.com>
date Thu, 18 Nov 2021 14:19:36 +0300
parents 6d1488b62dc5
children
line wrap: on
line source

/* AUTO-GENERATED, DO NOT EDIT. */

#include <stddef.h>
#include <stdint.h>

#include "ngx_bpf.h"


static ngx_bpf_reloc_t bpf_reloc_prog_ngx_quic_reuseport_helper[] = {
    { "ngx_quic_sockmap", 55 },
};

static struct bpf_insn bpf_insn_prog_ngx_quic_reuseport_helper[] = {
    /* opcode dst          src         offset imm */
    { 0x79,   BPF_REG_4,   BPF_REG_1, (int16_t)      0,        0x0 },
    { 0x79,   BPF_REG_3,   BPF_REG_1, (int16_t)      8,        0x0 },
    { 0xbf,   BPF_REG_2,   BPF_REG_4, (int16_t)      0,        0x0 },
    {  0x7,   BPF_REG_2,   BPF_REG_0, (int16_t)      0,        0x8 },
    { 0x2d,   BPF_REG_2,   BPF_REG_3, (int16_t)     54,        0x0 },
    { 0xbf,   BPF_REG_5,   BPF_REG_4, (int16_t)      0,        0x0 },
    {  0x7,   BPF_REG_5,   BPF_REG_0, (int16_t)      0,        0x9 },
    { 0x2d,   BPF_REG_5,   BPF_REG_3, (int16_t)     51,        0x0 },
    { 0xb7,   BPF_REG_5,   BPF_REG_0, (int16_t)      0,       0x14 },
    { 0xb7,   BPF_REG_0,   BPF_REG_0, (int16_t)      0,        0x9 },
    { 0x71,   BPF_REG_6,   BPF_REG_2, (int16_t)      0,        0x0 },
    { 0x67,   BPF_REG_6,   BPF_REG_0, (int16_t)      0,       0x38 },
    { 0xc7,   BPF_REG_6,   BPF_REG_0, (int16_t)      0,       0x38 },
    { 0x65,   BPF_REG_6,   BPF_REG_0, (int16_t)     10, 0xffffffff },
    { 0xbf,   BPF_REG_2,   BPF_REG_4, (int16_t)      0,        0x0 },
    {  0x7,   BPF_REG_2,   BPF_REG_0, (int16_t)      0,        0xd },
    { 0x2d,   BPF_REG_2,   BPF_REG_3, (int16_t)     42,        0x0 },
    { 0xbf,   BPF_REG_5,   BPF_REG_4, (int16_t)      0,        0x0 },
    {  0x7,   BPF_REG_5,   BPF_REG_0, (int16_t)      0,        0xe },
    { 0x2d,   BPF_REG_5,   BPF_REG_3, (int16_t)     39,        0x0 },
    { 0xb7,   BPF_REG_0,   BPF_REG_0, (int16_t)      0,        0xe },
    { 0x71,   BPF_REG_5,   BPF_REG_2, (int16_t)      0,        0x0 },
    { 0xb7,   BPF_REG_6,   BPF_REG_0, (int16_t)      0,        0x8 },
    { 0x2d,   BPF_REG_6,   BPF_REG_5, (int16_t)     35,        0x0 },
    {  0xf,   BPF_REG_5,   BPF_REG_0, (int16_t)      0,        0x0 },
    {  0xf,   BPF_REG_4,   BPF_REG_5, (int16_t)      0,        0x0 },
    { 0x2d,   BPF_REG_4,   BPF_REG_3, (int16_t)     32,        0x0 },
    { 0xbf,   BPF_REG_4,   BPF_REG_2, (int16_t)      0,        0x0 },
    {  0x7,   BPF_REG_4,   BPF_REG_0, (int16_t)      0,        0x9 },
    { 0x2d,   BPF_REG_4,   BPF_REG_3, (int16_t)     29,        0x0 },
    { 0x71,   BPF_REG_4,   BPF_REG_2, (int16_t)      1,        0x0 },
    { 0x67,   BPF_REG_4,   BPF_REG_0, (int16_t)      0,       0x38 },
    { 0x71,   BPF_REG_3,   BPF_REG_2, (int16_t)      2,        0x0 },
    { 0x67,   BPF_REG_3,   BPF_REG_0, (int16_t)      0,       0x30 },
    { 0x4f,   BPF_REG_3,   BPF_REG_4, (int16_t)      0,        0x0 },
    { 0x71,   BPF_REG_4,   BPF_REG_2, (int16_t)      3,        0x0 },
    { 0x67,   BPF_REG_4,   BPF_REG_0, (int16_t)      0,       0x28 },
    { 0x4f,   BPF_REG_3,   BPF_REG_4, (int16_t)      0,        0x0 },
    { 0x71,   BPF_REG_4,   BPF_REG_2, (int16_t)      4,        0x0 },
    { 0x67,   BPF_REG_4,   BPF_REG_0, (int16_t)      0,       0x20 },
    { 0x4f,   BPF_REG_3,   BPF_REG_4, (int16_t)      0,        0x0 },
    { 0x71,   BPF_REG_4,   BPF_REG_2, (int16_t)      5,        0x0 },
    { 0x67,   BPF_REG_4,   BPF_REG_0, (int16_t)      0,       0x18 },
    { 0x4f,   BPF_REG_3,   BPF_REG_4, (int16_t)      0,        0x0 },
    { 0x71,   BPF_REG_4,   BPF_REG_2, (int16_t)      6,        0x0 },
    { 0x67,   BPF_REG_4,   BPF_REG_0, (int16_t)      0,       0x10 },
    { 0x4f,   BPF_REG_3,   BPF_REG_4, (int16_t)      0,        0x0 },
    { 0x71,   BPF_REG_4,   BPF_REG_2, (int16_t)      7,        0x0 },
    { 0x67,   BPF_REG_4,   BPF_REG_0, (int16_t)      0,        0x8 },
    { 0x4f,   BPF_REG_3,   BPF_REG_4, (int16_t)      0,        0x0 },
    { 0x71,   BPF_REG_2,   BPF_REG_2, (int16_t)      8,        0x0 },
    { 0x4f,   BPF_REG_3,   BPF_REG_2, (int16_t)      0,        0x0 },
    { 0x7b,  BPF_REG_10,   BPF_REG_3, (int16_t)  65528,        0x0 },
    { 0xbf,   BPF_REG_3,  BPF_REG_10, (int16_t)      0,        0x0 },
    {  0x7,   BPF_REG_3,   BPF_REG_0, (int16_t)      0, 0xfffffff8 },
    { 0x18,   BPF_REG_2,   BPF_REG_0, (int16_t)      0,        0x0 },
    {  0x0,   BPF_REG_0,   BPF_REG_0, (int16_t)      0,        0x0 },
    { 0xb7,   BPF_REG_4,   BPF_REG_0, (int16_t)      0,        0x0 },
    { 0x85,   BPF_REG_0,   BPF_REG_0, (int16_t)      0,       0x52 },
    { 0xb7,   BPF_REG_0,   BPF_REG_0, (int16_t)      0,        0x1 },
    { 0x95,   BPF_REG_0,   BPF_REG_0, (int16_t)      0,        0x0 },
};


ngx_bpf_program_t ngx_quic_reuseport_helper = {
    .relocs = bpf_reloc_prog_ngx_quic_reuseport_helper,
    .nrelocs = sizeof(bpf_reloc_prog_ngx_quic_reuseport_helper)
               / sizeof(bpf_reloc_prog_ngx_quic_reuseport_helper[0]),
    .ins = bpf_insn_prog_ngx_quic_reuseport_helper,
    .nins = sizeof(bpf_insn_prog_ngx_quic_reuseport_helper)
            / sizeof(bpf_insn_prog_ngx_quic_reuseport_helper[0]),
    .license = "BSD",
    .type = BPF_PROG_TYPE_SK_REUSEPORT,
};