commit 1f835fa22b948339b6d583ae8beb2827a96d5159
author Hanno Becker <hanno.becker@arm.com> Thu Jun 13 10:14:59 2019 +0100
committer Hanno Becker <hanno.becker@arm.com> Tue Jul 02 16:42:10 2019 +0100
tree 0e6fbf6c1d6a191ce35133ce06dd326a59dc79d0
parent e0200dad634d4ce61d2c835fa620ddb55b821101

Allow configuration of read timeouts at compile-time

Introduces compile-time constants
- MBEDTLS_SSL_CONF_READ_TIMEOUT
- MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN
- MBEDTLS_SSL_CONF_HS_TIMEOUT_MAX
which allow to configure the read timeouts and
minimum/maximum handshake timeout at compile time.

Impact on code-size:

|  | GCC 8.2.1 | ARMC5 5.06 | ARMC6 6.12 |
| --- | --- | --- | --- |
| `libmbedtls.a` before  | 23147 | 23781 | 26703 |
| `libmbedtls.a` after | 23131 | 23753 | 26673 |
| gain in Bytes | 16 | 28 | 30 |

include/mbedtls/check_config.h

diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index a038121..4487bd7 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -638,6 +638,13 @@
 #error "MBEDTLS_SSL_CONF_CID_LEN and MBEDTLS_SSL_CONF_IGNORE_UNEXPECTED_CID must be defined simultaneously"
 #endif
 
+#if (  defined(MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN) &&       \
+      !defined(MBEDTLS_SSL_CONF_HS_TIMEOUT_MAX) ) ||    \
+    ( !defined(MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN) &&       \
+       defined(MBEDTLS_SSL_CONF_HS_TIMEOUT_MAX) )
+#error "MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN and MBEDTLS_SSL_CONF_HS_TIMEOUT_MAX must be defined simultaneously"
+#endif
+
 #if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT) &&                              \
     ( !defined(MBEDTLS_SSL_TLS_C) || !defined(MBEDTLS_SSL_PROTO_DTLS) )
 #error "MBEDTLS_SSL_DTLS_BADMAC_LIMIT  defined, but not all prerequisites"