The compile-time option MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE gates both
support for interoperability with a peer that uses middlebox compatibility
mode, and support for activating that mode ourselves. Change code that is
only needed for interoperability to be guarded by
MBEDTLS_SSL_TLS1_3_ACCEPT_COMPATIBILITY_MODE.
As of this commit, MBEDTLS_SSL_TLS1_3_ACCEPT_COMPATIBILITY_MODE is always
enabled: there is no way to disable it, and there are no tests with it
disabled.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
73a406ee60