Mercurial > hg > nginx-quic

annotate src/core/ngx_crc.h @ 9079:9ae24a9ba763 quic

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QUIC: fixed encryption level in ngx_quic_frame_sendto(). Previously, ssl_encryption_application was hardcoded. Before 9553eea74f2a, ngx_quic_frame_sendto() was used only for PATH_CHALLENGE/PATH_RESPONSE sent at the application level only. Since 9553eea74f2a, ngx_quic_frame_sendto() is also used for CONNECTION_CLOSE, which can be sent at initial level after SSL handshake error or rejection. This resulted in packet encryption error. Now level is copied from frame, which fixes the error.
author Roman Arutyunyan <arut@nginx.com>
date Thu, 04 May 2023 19:29:34 +0400
parents d620f497c50f
children
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #ifndef _NGX_CRC_H_INCLUDED_
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9 #define _NGX_CRC_H_INCLUDED_
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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16 /* 32-bit crc16 */
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18 static ngx_inline uint32_t
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19 ngx_crc(u_char *data, size_t len)
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20 {
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21 uint32_t sum;
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23 for (sum = 0; len; len--) {
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25 /*
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26 * gcc 2.95.2 x86 and icc 7.1.006 compile
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27 * that operator into the single "rol" opcode,
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28 * msvc 6.0sp2 compiles it into four opcodes.
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29 */
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30 sum = sum >> 1 | sum << 31;
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32 sum += *data++;
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33 }
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35 return sum;
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36 }
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39 #endif /* _NGX_CRC_H_INCLUDED_ */