cmux: Rename cell_ewma_set_scale_factor()

It is rename to something more meaningful that explains what it does exactly
which is sets the EWMA options (currently only one exists). The new name is
cmux_ewma_set_options().

Also, remove a public function from circuitmux_ewma.h that is only used in the
C file. Make it static inline as well.

Signed-off-by: David Goulet <dgoulet@torproject.org>

src/or/circuitmux_ewma.c

@@ -241,6 +241,13 @@ circuitmux_policy_t ewma_policy = {
 
 /*** EWMA method implementations using the below EWMA helper functions ***/
 
+/** Compute and return the current cell_ewma tick. */
+static inline unsigned int
+cell_ewma_get_tick(void)
+{
+  return ((unsigned)approx_time() / EWMA_TICK_LEN);
+}
+
 /**
  * Allocate an ewma_policy_data_t and upcast it to a circuitmux_policy_data_t;
  * this is called when setting the policy on a circuitmux_t to ewma_policy.
@@ -610,13 +617,6 @@ cell_ewma_tick_from_timeval(const struct timeval *now,
   return res;
 }
 
-/** Compute and return the current cell_ewma tick. */
-unsigned int
-cell_ewma_get_tick(void)
-{
-  return ((unsigned)approx_time() / EWMA_TICK_LEN);
-}
-
 /* Default value for the CircuitPriorityHalflifeMsec consensus parameter in
  * msec. */
 #define CMUX_PRIORITY_HALFLIFE_MSEC_DEFAULT 30000
@@ -672,8 +672,8 @@ get_circuit_priority_halflife(const or_options_t *options,
 
 /** Adjust the global cell scale factor based on <b>options</b> */
 void
-cell_ewma_set_scale_factor(const or_options_t *options,
-                           const networkstatus_t *consensus)
+cmux_ewma_set_options(const or_options_t *options,
+                      const networkstatus_t *consensus)
 {
   double halflife;
   const char *source;

src/or/circuitmux_ewma.h

@@ -12,12 +12,12 @@
 #include "or.h"
 #include "circuitmux.h"
 
+/* The public EWMA policy callbacks object. */
 extern circuitmux_policy_t ewma_policy;
 
 /* Externally visible EWMA functions */
-unsigned int cell_ewma_get_tick(void);
-void cell_ewma_set_scale_factor(const or_options_t *options,
-                                const networkstatus_t *consensus);
+void cmux_ewma_set_options(const or_options_t *options,
+                           const networkstatus_t *consensus);
 
 #endif /* !defined(TOR_CIRCUITMUX_EWMA_H) */
 

src/or/config.c

@@ -2073,7 +2073,7 @@ options_act(const or_options_t *old_options)
     configure_accounting(time(NULL));
 
   /* Change the cell EWMA settings */
-  cell_ewma_set_scale_factor(options, networkstatus_get_latest_consensus());
+  cmux_ewma_set_options(options, networkstatus_get_latest_consensus());
 
   /* Update the BridgePassword's hashed version as needed.  We store this as a
    * digest so that we can do side-channel-proof comparisons on it.

src/or/networkstatus.c

@@ -2003,7 +2003,7 @@ networkstatus_set_current_consensus(const char *consensus,
     update_consensus_networkstatus_fetch_time(now);
 
     /* Change the cell EWMA settings */
-    cell_ewma_set_scale_factor(options, c);
+    cmux_ewma_set_options(options, c);
 
     /* XXXX this call might be unnecessary here: can changing the
      * current consensus really alter our view of any OR's rate limits? */