cmux: Move circuitmux_s object into header in private section

Step needed in order to access members of the object for unit tests.

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

1 files changed, 56 insertions, 0 deletions

diff --git a/src/core/or/circuitmux.h b/src/core/or/circuitmux.h
index 67cd9bcdd8..c68c31b29a 100644
--- a/src/core/or/circuitmux.h
+++ b/src/core/or/circuitmux.h
@@ -158,5 +158,61 @@ void circuitmux_mark_destroyed_circids_usable(circuitmux_t *cmux,
 MOCK_DECL(int, circuitmux_compare_muxes,
           (circuitmux_t *cmux_1, circuitmux_t *cmux_2));
 
+#ifdef CIRCUITMUX_PRIVATE
+
+#include "core/or/destroy_cell_queue_st.h"
+
+/*
+ * Map of muxinfos for circuitmux_t to use; struct is defined below (name
+ * of struct must match HT_HEAD line).
+ */
+typedef HT_HEAD(chanid_circid_muxinfo_map, chanid_circid_muxinfo_t)
+  chanid_circid_muxinfo_map_t;
+
+/*
+ * Structures for circuitmux.c
+ */
+
+struct circuitmux_s {
+  /* Keep count of attached, active circuits */
+  unsigned int n_circuits, n_active_circuits;
+
+  /* Total number of queued cells on all circuits */
+  unsigned int n_cells;
+
+  /*
+   * Map from (channel ID, circuit ID) pairs to circuit_muxinfo_t
+   */
+  chanid_circid_muxinfo_map_t *chanid_circid_map;
+
+  /** List of queued destroy cells */
+  destroy_cell_queue_t destroy_cell_queue;
+  /** Boolean: True iff the last cell to circuitmux_get_first_active_circuit
+   * returned the destroy queue. Used to force alternation between
+   * destroy/non-destroy cells.
+   *
+   * XXXX There is no reason to think that alternating is a particularly good
+   * approach -- it's just designed to prevent destroys from starving other
+   * cells completely.
+   */
+  unsigned int last_cell_was_destroy : 1;
+  /** Destroy counter: increment this when a destroy gets queued, decrement
+   * when we unqueue it, so we can test to make sure they don't starve.
+   */
+  int64_t destroy_ctr;
+
+  /*
+   * Circuitmux policy; if this is non-NULL, it can override the built-
+   * in round-robin active circuits behavior.  This is how EWMA works in
+   * the new circuitmux_t world.
+   */
+  const circuitmux_policy_t *policy;
+
+  /* Policy-specific data */
+  circuitmux_policy_data_t *policy_data;
+};
+
+#endif /* CIRCUITMUX_PRIVATE */
+
 #endif /* !defined(TOR_CIRCUITMUX_H) */