Move some defines to ssl_internal.h
diff --git a/include/mbedtls/ssl_internal.h b/include/mbedtls/ssl_internal.h
index 310e283..122c1ee 100644
--- a/include/mbedtls/ssl_internal.h
+++ b/include/mbedtls/ssl_internal.h
@@ -42,6 +42,116 @@
#include "sha512.h"
#endif
+#if defined(_MSC_VER) && !defined(inline)
+#define inline _inline
+#else
+#if defined(__ARMCC_VERSION) && !defined(inline)
+#define inline __inline
+#endif /* __ARMCC_VERSION */
+#endif /*_MSC_VER */
+
+/* Determine minimum supported version */
+#define MBEDTLS_SSL_MIN_MAJOR_VERSION MBEDTLS_SSL_MAJOR_VERSION_3
+
+#if defined(MBEDTLS_SSL_PROTO_SSL3)
+#define MBEDTLS_SSL_MIN_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_0
+#else
+#if defined(MBEDTLS_SSL_PROTO_TLS1)
+#define MBEDTLS_SSL_MIN_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_1
+#else
+#if defined(MBEDTLS_SSL_PROTO_TLS1_1)
+#define MBEDTLS_SSL_MIN_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_2
+#else
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
+#define MBEDTLS_SSL_MIN_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_3
+#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_1 */
+#endif /* MBEDTLS_SSL_PROTO_TLS1 */
+#endif /* MBEDTLS_SSL_PROTO_SSL3 */
+
+/* Determine maximum supported version */
+#define MBEDTLS_SSL_MAX_MAJOR_VERSION MBEDTLS_SSL_MAJOR_VERSION_3
+
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
+#define MBEDTLS_SSL_MAX_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_3
+#else
+#if defined(MBEDTLS_SSL_PROTO_TLS1_1)
+#define MBEDTLS_SSL_MAX_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_2
+#else
+#if defined(MBEDTLS_SSL_PROTO_TLS1)
+#define MBEDTLS_SSL_MAX_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_1
+#else
+#if defined(MBEDTLS_SSL_PROTO_SSL3)
+#define MBEDTLS_SSL_MAX_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_0
+#endif /* MBEDTLS_SSL_PROTO_SSL3 */
+#endif /* MBEDTLS_SSL_PROTO_TLS1 */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_1 */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
+
+#define MBEDTLS_SSL_INITIAL_HANDSHAKE 0
+#define MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS 1 /* In progress */
+#define MBEDTLS_SSL_RENEGOTIATION_DONE 2 /* Done or aborted */
+#define MBEDTLS_SSL_RENEGOTIATION_PENDING 3 /* Requested (server only) */
+
+/*
+ * DTLS retransmission states, see RFC 6347 4.2.4
+ *
+ * The SENDING state is merged in PREPARING for initial sends,
+ * but is distinct for resends.
+ *
+ * Note: initial state is wrong for server, but is not used anyway.
+ */
+#define MBEDTLS_SSL_RETRANS_PREPARING 0
+#define MBEDTLS_SSL_RETRANS_SENDING 1
+#define MBEDTLS_SSL_RETRANS_WAITING 2
+#define MBEDTLS_SSL_RETRANS_FINISHED 3
+
+/*
+ * Allow extra bytes for record, authentication and encryption overhead:
+ * counter (8) + header (5) + IV(16) + MAC (16-48) + padding (0-256)
+ * and allow for a maximum of 1024 of compression expansion if
+ * enabled.
+ */
+#if defined(MBEDTLS_ZLIB_SUPPORT)
+#define MBEDTLS_SSL_COMPRESSION_ADD 1024
+#else
+#define MBEDTLS_SSL_COMPRESSION_ADD 0
+#endif
+
+#if defined(MBEDTLS_ARC4_C) || defined(MBEDTLS_CIPHER_MODE_CBC)
+/* Ciphersuites using HMAC */
+#if defined(MBEDTLS_SHA512_C)
+#define MBEDTLS_SSL_MAC_ADD 48 /* SHA-384 used for HMAC */
+#elif defined(MBEDTLS_SHA256_C)
+#define MBEDTLS_SSL_MAC_ADD 32 /* SHA-256 used for HMAC */
+#else
+#define MBEDTLS_SSL_MAC_ADD 20 /* SHA-1 used for HMAC */
+#endif
+#else
+/* AEAD ciphersuites: GCM and CCM use a 128 bits tag */
+#define MBEDTLS_SSL_MAC_ADD 16
+#endif
+
+#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#define MBEDTLS_SSL_PADDING_ADD 256
+#else
+#define MBEDTLS_SSL_PADDING_ADD 0
+#endif
+
+#define MBEDTLS_SSL_BUFFER_LEN ( MBEDTLS_SSL_MAX_CONTENT_LEN \
+ + MBEDTLS_SSL_COMPRESSION_ADD \
+ + 29 /* counter + header + IV */ \
+ + MBEDTLS_SSL_MAC_ADD \
+ + MBEDTLS_SSL_PADDING_ADD \
+ )
+
+/*
+ * TLS extension flags (for extensions with outgoing ServerHello content
+ * that need it (e.g. for RENEGOTIATION_INFO the server already knows because
+ * of state of the renegotiation flag, so no indicator is required)
+ */
+#define MBEDTLS_TLS_EXT_SUPPORTED_POINT_FORMATS_PRESENT (1 << 0)
+
#ifdef __cplusplus
extern "C" {
#endif