Remove support for now-obsolete consensus methods before 28.

Closes ticket 32695.

2 files changed, 4 insertions, 36 deletions

diff --git a/src/feature/dirauth/dirvote.c b/src/feature/dirauth/dirvote.c
index 9889170a26..c1d4ff1a7d 100644
--- a/src/feature/dirauth/dirvote.c
+++ b/src/feature/dirauth/dirvote.c
@@ -1540,14 +1540,11 @@ networkstatus_compute_consensus(smartlist_t *votes,
     consensus_method = MAX_SUPPORTED_CONSENSUS_METHOD;
   }
 
-  if (consensus_method >= MIN_METHOD_FOR_INIT_BW_WEIGHTS_ONE) {
+  {
     /* It's smarter to initialize these weights to 1, so that later on,
      * we can't accidentally divide by zero. */
     G = M = E = D = 1;
     T = 4;
-  } else {
-    /* ...but originally, they were set to zero. */
-    G = M = E = D = T = 0;
   }
 
   /* Compute medians of time-related things, and figure out how many
@@ -2268,8 +2265,7 @@ networkstatus_compute_consensus(smartlist_t *votes,
         smartlist_add_strdup(chunks, chosen_version);
       }
       smartlist_add_strdup(chunks, "\n");
-      if (chosen_protocol_list &&
-          consensus_method >= MIN_METHOD_FOR_RS_PROTOCOLS) {
+      if (chosen_protocol_list) {
         smartlist_add_asprintf(chunks, "pr %s\n", chosen_protocol_list);
       }
       /*     Now the weight line. */
@@ -3805,13 +3801,6 @@ dirvote_create_microdescriptor(const routerinfo_t *ri, int consensus_method)
     smartlist_add_asprintf(chunks, "ntor-onion-key %s", kbuf);
   }
 
-  /* We originally put a lines in the micrdescriptors, but then we worked out
-   * that we needed them in the microdesc consensus. See #20916. */
-  if (consensus_method < MIN_METHOD_FOR_NO_A_LINES_IN_MICRODESC &&
-      !tor_addr_is_null(&ri->ipv6_addr) && ri->ipv6_orport)
-    smartlist_add_asprintf(chunks, "a %s\n",
-                           fmt_addrport(&ri->ipv6_addr, ri->ipv6_orport));
-
   if (family) {
     if (consensus_method < MIN_METHOD_FOR_CANONICAL_FAMILIES_IN_MICRODESCS) {
       smartlist_add_asprintf(chunks, "family %s\n", family);
@@ -3917,8 +3906,7 @@ static const struct consensus_method_range_t {
   int low;
   int high;
 } microdesc_consensus_methods[] = {
-  {MIN_SUPPORTED_CONSENSUS_METHOD, MIN_METHOD_FOR_NO_A_LINES_IN_MICRODESC - 1},
-  {MIN_METHOD_FOR_NO_A_LINES_IN_MICRODESC,
+  {MIN_SUPPORTED_CONSENSUS_METHOD,
    MIN_METHOD_FOR_CANONICAL_FAMILIES_IN_MICRODESCS - 1},
   {MIN_METHOD_FOR_CANONICAL_FAMILIES_IN_MICRODESCS,
    MAX_SUPPORTED_CONSENSUS_METHOD},
diff --git a/src/feature/dirauth/dirvote.h b/src/feature/dirauth/dirvote.h
index 063977d025..b614f303dc 100644
--- a/src/feature/dirauth/dirvote.h
+++ b/src/feature/dirauth/dirvote.h
@@ -54,31 +54,11 @@
 #define ROUTERSTATUS_FORMAT_NO_CONSENSUS_METHOD 0
 
 /** The lowest consensus method that we currently support. */
-#define MIN_SUPPORTED_CONSENSUS_METHOD 25
+#define MIN_SUPPORTED_CONSENSUS_METHOD 28
 
 /** The highest consensus method that we currently support. */
 #define MAX_SUPPORTED_CONSENSUS_METHOD 29
 
-/** Lowest consensus method where authorities vote on required/recommended
- * protocols. */
-#define MIN_METHOD_FOR_RECOMMENDED_PROTOCOLS 25
-
-/** Lowest consensus method where authorities add protocols to routerstatus
- * entries. */
-#define MIN_METHOD_FOR_RS_PROTOCOLS 25
-
-/** Lowest consensus method where authorities initialize bandwidth weights to 1
- * instead of 0. See #14881 */
-#define MIN_METHOD_FOR_INIT_BW_WEIGHTS_ONE 26
-
-/** Lowest consensus method where the microdesc consensus contains relay IPv6
- * addresses. See #23826 and #20916. */
-#define MIN_METHOD_FOR_A_LINES_IN_MICRODESC_CONSENSUS 27
-
-/** Lowest consensus method where microdescriptors do not contain relay IPv6
- * addresses. See #23828 and #20916. */
-#define MIN_METHOD_FOR_NO_A_LINES_IN_MICRODESC 28
-
 /**
  * Lowest consensus method where microdescriptor lines are put in canonical
  * form for improved compressibility and ease of storage. See proposal 298.