Remove implementation code for all pre-13 consensus methods.

Also remove a test for the way that we generated parameter votes
before consensus method 12.

src/or/dirvote.c

@@ -602,6 +602,7 @@ dirvote_compute_params(smartlist_t *votes, int method, int total_authorities)
   const int n_votes = smartlist_len(votes);
   smartlist_t *output;
   smartlist_t *param_list = smartlist_new();
+  (void) method;
 
   /* We require that the parameter lists in the votes are well-formed: that
      is, that their keywords are unique and sorted, and that their values are
@@ -648,8 +649,7 @@ dirvote_compute_params(smartlist_t *votes, int method, int total_authorities)
       /* We've reached the end of a series. */
       /* Make sure enough authorities voted on this param, unless the
        * the consensus method we use is too old for that. */
-      if (method < MIN_METHOD_FOR_MAJORITY_PARAMS ||
-          i > total_authorities/2 ||
+      if (i > total_authorities/2 ||
           i >= MIN_VOTES_FOR_PARAM) {
         int32_t median = median_int32(vals, i);
         char *out_string = tor_malloc(64+cur_param_len);
@@ -1553,9 +1553,7 @@ networkstatus_compute_consensus(smartlist_t *votes,
       }
 
       /* Fix bug 2203: Do not count BadExit nodes as Exits for bw weights */
-      if (consensus_method >= MIN_METHOD_TO_CUT_BADEXIT_WEIGHT) {
-        is_exit = is_exit && !is_bad_exit;
-      }
+      is_exit = is_exit && !is_bad_exit;
 
       {
         if (rs_out.has_bandwidth) {
@@ -1659,7 +1657,6 @@ networkstatus_compute_consensus(smartlist_t *votes,
       }
 
       if (flavor == FLAV_MICRODESC &&
-          consensus_method >= MIN_METHOD_FOR_MANDATORY_MICRODESC &&
           tor_digest256_is_zero(microdesc_digest)) {
         /* With no microdescriptor digest, we omit the entry entirely. */
         continue;

src/or/dirvote.h

@@ -27,13 +27,6 @@
 /** The highest consensus method that we currently support. */
 #define MAX_SUPPORTED_CONSENSUS_METHOD 18
 
-/** Lowest consensus method that doesn't count bad exits as exits for weight */
-#define MIN_METHOD_TO_CUT_BADEXIT_WEIGHT 11
-
-/** Lowest consensus method that ensures a majority of authorities voted
-  * for a param. */
-#define MIN_METHOD_FOR_MAJORITY_PARAMS 12
-
 /** Lowest consensus method where microdesc consensuses omit any entry
  * with no microdesc. */
 #define MIN_METHOD_FOR_MANDATORY_MICRODESC 13

src/or/routerparse.c

@@ -2047,6 +2047,7 @@ networkstatus_verify_bw_weights(networkstatus_t *ns, int consensus_method)
   double Gtotal=0, Mtotal=0, Etotal=0;
   const char *casename = NULL;
   int valid = 1;
+  (void) consensus_method;
 
   weight_scale = networkstatus_get_weight_scale_param(ns);
   Wgg = networkstatus_get_bw_weight(ns, "Wgg", -1);
@@ -2126,12 +2127,8 @@ networkstatus_verify_bw_weights(networkstatus_t *ns, int consensus_method)
   // Then, gather G, M, E, D, T to determine case
   SMARTLIST_FOREACH_BEGIN(ns->routerstatus_list, routerstatus_t *, rs) {
     int is_exit = 0;
-    if (consensus_method >= MIN_METHOD_TO_CUT_BADEXIT_WEIGHT) {
-      /* Bug #2203: Don't count bad exits as exits for balancing */
-      is_exit = rs->is_exit && !rs->is_bad_exit;
-    } else {
-      is_exit = rs->is_exit;
-    }
+    /* Bug #2203: Don't count bad exits as exits for balancing */
+    is_exit = rs->is_exit && !rs->is_bad_exit;
     if (rs->has_bandwidth) {
       T += rs->bandwidth_kb;
       if (is_exit && rs->is_possible_guard) {

src/test/test_dir.c

@@ -736,10 +736,6 @@ test_dir_param_voting(void)
   /* Do the first tests without adding all the other votes, for
    * networks without many dirauths. */
 
-  res = dirvote_compute_params(votes, 11, 6);
-  test_streq(res, "ab=90 abcd=20 cw=50 x-yz=-99");
-  tor_free(res);
-
   res = dirvote_compute_params(votes, 12, 2);
   test_streq(res, "");
   tor_free(res);
@@ -750,10 +746,6 @@ test_dir_param_voting(void)
 
   smartlist_add(votes, &vote2);
 
-  res = dirvote_compute_params(votes, 11, 2);
-  test_streq(res, "ab=27 abcd=20 cw=5 x-yz=-99");
-  tor_free(res);
-
   res = dirvote_compute_params(votes, 12, 2);
   test_streq(res, "ab=27 cw=5 x-yz=-99");
   tor_free(res);
@@ -768,10 +760,6 @@ test_dir_param_voting(void)
 
   smartlist_add(votes, &vote3);
 
-  res = dirvote_compute_params(votes, 11, 3);
-  test_streq(res, "ab=27 abcd=20 c=60 cw=50 x-yz=-9 zzzzz=101");
-  tor_free(res);
-
   res = dirvote_compute_params(votes, 12, 3);
   test_streq(res, "ab=27 abcd=20 cw=50 x-yz=-9");
   tor_free(res);
@@ -786,10 +774,6 @@ test_dir_param_voting(void)
 
   smartlist_add(votes, &vote4);
 
-  res = dirvote_compute_params(votes, 11, 4);
-  test_streq(res, "ab=90 abcd=20 c=1 cw=50 x-yz=-9 zzzzz=101");
-  tor_free(res);
-
   res = dirvote_compute_params(votes, 12, 4);
   test_streq(res, "ab=90 abcd=20 cw=50 x-yz=-9");
   tor_free(res);