QUIC: using native TLSv1.3 cipher suite constants. After BoringSSL aligned[1] with OpenSSL on TLS1_3_CK_* macros, and LibreSSL uses OpenSSL naming, our own variants can be dropped now. Compatibility is preserved with libraries that lack these macros. Additionally, transition to SSL_CIPHER_get_id() fixes build error with LibreSSL that doesn't implement SSL_CIPHER_get_protocol_id(). [1] https://boringssl.googlesource.com/boringssl/+/dfddbc4ded

/*
 * Copyright (C) Ruslan Ermilov
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_RWLOCK_H_INCLUDED_
#define _NGX_RWLOCK_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>


void ngx_rwlock_wlock(ngx_atomic_t *lock);
void ngx_rwlock_rlock(ngx_atomic_t *lock);
void ngx_rwlock_unlock(ngx_atomic_t *lock);
void ngx_rwlock_downgrade(ngx_atomic_t *lock);


#endif /* _NGX_RWLOCK_H_INCLUDED_ */