[tor-commits] [tor/main] bwauth: Add AuthDirDontVoteOnDirAuthBandwidth option to avoid giving weights to dirauths

[ahf@xxxxxxxxxxxxxx]

commit b7992d4f793f0aa965e6efde1bca5c03cce95e8e
Author: Neel Chauhan <neel@xxxxxxxxx>
Date:   Fri Sep 17 18:38:32 2021 -0700

    bwauth: Add AuthDirDontVoteOnDirAuthBandwidth option to avoid giving weights to dirauths
---
 changes/bug40471                        | 4 ++++
 src/feature/dirauth/dirauth_options.inc | 3 +++
 src/feature/dirauth/dirvote.c           | 3 ++-
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/changes/bug40471 b/changes/bug40471
new file mode 100644
index 0000000000..323e049599
--- /dev/null
+++ b/changes/bug40471
@@ -0,0 +1,4 @@
+  o Minor bugfixes (dirauth, bandwidth scanner):
+    - Add the AuthDirDontVoteOnDirAuthBandwidth dirauth config parameter to
+      avoid voting on bandwidth scanner weights to v3 directory authorities.
+      Fixes bug 40471; bugfix on 0.2.2.1-alpha. Patch by Neel Chauhan.
diff --git a/src/feature/dirauth/dirauth_options.inc b/src/feature/dirauth/dirauth_options.inc
index 05726b8c2f..307ecbd286 100644
--- a/src/feature/dirauth/dirauth_options.inc
+++ b/src/feature/dirauth/dirauth_options.inc
@@ -109,4 +109,7 @@ CONF_VAR(VersioningAuthoritativeDirectory, BOOL, 0, "0")
  * pressure or not. */
 CONF_VAR(AuthDirRejectRequestsUnderLoad, BOOL, 0, "1")
 
+/** Boolean: Should we not give bandwidth weight measurements to dirauths? */
+CONF_VAR(AuthDirDontVoteOnDirAuthBandwidth, BOOL, 0, "1")
+
 END_CONF_STRUCT(dirauth_options_t)
diff --git a/src/feature/dirauth/dirvote.c b/src/feature/dirauth/dirvote.c
index ffaa78b997..a00e0c0fb0 100644
--- a/src/feature/dirauth/dirvote.c
+++ b/src/feature/dirauth/dirvote.c
@@ -2265,7 +2265,8 @@ networkstatus_compute_consensus(smartlist_t *votes,
         smartlist_add_asprintf(chunks, "pr %s\n", chosen_protocol_list);
       }
       /*     Now the weight line. */
-      if (rs_out.has_bandwidth) {
+      if (rs_out.has_bandwidth && (!rs_out.is_authority ||
+          !dirauth_get_options()->AuthDirDontVoteOnDirAuthBandwidth)) {
         char *guardfraction_str = NULL;
         int unmeasured = rs_out.bw_is_unmeasured;
 



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