hs_pow: Add CompiledProofOfWorkHash torrc option

This exposes the new fallback behavior in hashx via a new AUTOBOOL
configuration option, available to both clients and services. The
default should be fine for nearly everyone, but it might be necessary
to enable or disable the compiler manually for diagnostic purposes.

Signed-off-by: Micah Elizabeth Scott <beth@torproject.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/app/config/or_options_st.h b/src/app/config/or_options_st.h
index c8680bb49e..36b00662b5 100644
--- a/src/app/config/or_options_st.h
+++ b/src/app/config/or_options_st.h
@@ -723,6 +723,11 @@ struct or_options_t {
    * accessing this value directly.  */
   int ClientPreferIPv6DirPort;
 
+  /** If true, always use the compiled hash implementation. If false, always
+   * the interpreter. Default of "auto" allows a dynamic fallback from
+   * copmiler to interpreter. */
+  int CompiledProofOfWorkHash;
+
   /** If true, the tor client will use conflux for its general purpose
    * circuits which excludes onion service traffic. */
   int ConfluxEnabled;