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[tor-commits] [tor/master] hs: Remove v2 stats



commit 897ec8a34cbdfc510ddddd33cc027e13985fde8f
Author: David Goulet <dgoulet@xxxxxxxxxxxxxx>
Date:   Tue Feb 16 10:36:13 2021 -0500

    hs: Remove v2 stats
    
    We still keep v2 rendezvous stats since we will allow them until the network
    has entirely phased out.
    
    Related to #40266
    
    Signed-off-by: David Goulet <dgoulet@xxxxxxxxxxxxxx>
---
 src/core/or/status.c        |  3 +--
 src/feature/hs/hs_service.c |  2 +-
 src/feature/hs/hs_stats.c   | 17 ++---------------
 src/feature/hs/hs_stats.h   |  3 +--
 src/feature/stats/rephist.c | 37 +------------------------------------
 src/feature/stats/rephist.h |  6 ------
 6 files changed, 6 insertions(+), 62 deletions(-)

diff --git a/src/core/or/status.c b/src/core/or/status.c
index 00a88a3178..d027bcf81a 100644
--- a/src/core/or/status.c
+++ b/src/core/or/status.c
@@ -105,10 +105,9 @@ log_onion_service_stats(void)
   }
 
   log_notice(LD_HEARTBEAT,
-             "Our onion service%s received %u v2 and %u v3 INTRODUCE2 cells "
+             "Our onion service%s received %u v3 INTRODUCE2 cells "
              "and attempted to launch %d rendezvous circuits.",
              num_services == 1 ? "" : "s",
-             hs_stats_get_n_introduce2_v2_cells(),
              hs_stats_get_n_introduce2_v3_cells(),
              hs_stats_get_n_rendezvous_launches());
 }
diff --git a/src/feature/hs/hs_service.c b/src/feature/hs/hs_service.c
index 79734a67d5..3e0ecb91e1 100644
--- a/src/feature/hs/hs_service.c
+++ b/src/feature/hs/hs_service.c
@@ -4075,7 +4075,7 @@ hs_service_receive_introduce2(origin_circuit_t *circ, const uint8_t *payload,
 
   if (circ->hs_ident) {
     ret = service_handle_introduce2(circ, payload, payload_len);
-    hs_stats_note_introduce2_cell(1);
+    hs_stats_note_introduce2_cell();
   }
 
  done:
diff --git a/src/feature/hs/hs_stats.c b/src/feature/hs/hs_stats.c
index f9d458d630..c292694294 100644
--- a/src/feature/hs/hs_stats.c
+++ b/src/feature/hs/hs_stats.c
@@ -12,20 +12,14 @@
 
 /** Number of v3 INTRODUCE2 cells received */
 static uint32_t n_introduce2_v3 = 0;
-/** Number of v2 INTRODUCE2 cells received */
-static uint32_t n_introduce2_v2 = 0;
 /** Number of attempts to make a circuit to a rendezvous point */
 static uint32_t n_rendezvous_launches = 0;
 
 /** Note that we received another INTRODUCE2 cell. */
 void
-hs_stats_note_introduce2_cell(int is_hsv3)
+hs_stats_note_introduce2_cell(void)
 {
-  if (is_hsv3) {
-    n_introduce2_v3++;
-  } else {
-    n_introduce2_v2++;
-  }
+  n_introduce2_v3++;
 }
 
 /** Return the number of v3 INTRODUCE2 cells we have received. */
@@ -35,13 +29,6 @@ hs_stats_get_n_introduce2_v3_cells(void)
   return n_introduce2_v3;
 }
 
-/** Return the number of v2 INTRODUCE2 cells we have received. */
-uint32_t
-hs_stats_get_n_introduce2_v2_cells(void)
-{
-  return n_introduce2_v2;
-}
-
 /** Note that we attempted to launch another circuit to a rendezvous point. */
 void
 hs_stats_note_service_rendezvous_launch(void)
diff --git a/src/feature/hs/hs_stats.h b/src/feature/hs/hs_stats.h
index aea2ccf5c2..b08e2f702d 100644
--- a/src/feature/hs/hs_stats.h
+++ b/src/feature/hs/hs_stats.h
@@ -9,9 +9,8 @@
 #ifndef TOR_HS_STATS_H
 #define TOR_HS_STATS_H
 
-void hs_stats_note_introduce2_cell(int is_hsv3);
+void hs_stats_note_introduce2_cell(void);
 uint32_t hs_stats_get_n_introduce2_v3_cells(void);
-uint32_t hs_stats_get_n_introduce2_v2_cells(void);
 void hs_stats_note_service_rendezvous_launch(void);
 uint32_t hs_stats_get_n_rendezvous_launches(void);
 
diff --git a/src/feature/stats/rephist.c b/src/feature/stats/rephist.c
index f8d7887e65..f7c9336bff 100644
--- a/src/feature/stats/rephist.c
+++ b/src/feature/stats/rephist.c
@@ -1722,7 +1722,6 @@ static hs_v2_stats_t *
 hs_v2_stats_new(void)
 {
   hs_v2_stats_t *new_hs_v2_stats = tor_malloc_zero(sizeof(hs_v2_stats_t));
-  new_hs_v2_stats->v2_onions_seen_this_period = digestmap_new();
 
   return new_hs_v2_stats;
 }
@@ -1737,8 +1736,6 @@ hs_v2_stats_free_(hs_v2_stats_t *victim_hs_v2_stats)
   if (!victim_hs_v2_stats) {
     return;
   }
-
-  digestmap_free(victim_hs_v2_stats->v2_onions_seen_this_period, NULL);
   tor_free(victim_hs_v2_stats);
 }
 
@@ -1753,40 +1750,9 @@ rep_hist_reset_hs_v2_stats(time_t now)
 
   hs_v2_stats->rp_v2_relay_cells_seen = 0;
 
-  digestmap_free(hs_v2_stats->v2_onions_seen_this_period, NULL);
-  hs_v2_stats->v2_onions_seen_this_period = digestmap_new();
-
   start_of_hs_v2_stats_interval = now;
 }
 
-/** As HSDirs, we saw another v2 onion with public key <b>pubkey</b>. Check
- *  whether we have counted it before, if not count it now! */
-void
-rep_hist_hsdir_stored_maybe_new_v2_onion(const crypto_pk_t *pubkey)
-{
-  char pubkey_hash[DIGEST_LEN];
-
-  if (!hs_v2_stats) {
-    return; // We're not collecting stats
-  }
-
-  /* Get the digest of the pubkey which will be used to detect whether
-     we've seen this hidden service before or not.  */
-  if (crypto_pk_get_digest(pubkey, pubkey_hash) < 0) {
-    /*  This fail should not happen; key has been validated by
-        descriptor parsing code first. */
-    return;
-  }
-
-  /* Check if this is the first time we've seen this hidden
-     service. If it is, count it as new. */
-  if (!digestmap_get(hs_v2_stats->v2_onions_seen_this_period,
-                     pubkey_hash)) {
-    digestmap_set(hs_v2_stats->v2_onions_seen_this_period,
-                  pubkey_hash, (void*)(uintptr_t)1);
-  }
-}
-
 /*** HSv3 stats ******/
 
 /** Start of the current hidden service stats interval or 0 if we're not
@@ -1989,8 +1955,7 @@ rep_hist_format_hs_stats(time_t now, bool is_v3)
   uint64_t rp_cells_seen = is_v3 ?
     hs_v3_stats->rp_v3_relay_cells_seen : hs_v2_stats->rp_v2_relay_cells_seen;
   size_t onions_seen = is_v3 ?
-    digest256map_size(hs_v3_stats->v3_onions_seen_this_period) :
-    digestmap_size(hs_v2_stats->v2_onions_seen_this_period);
+    digest256map_size(hs_v3_stats->v3_onions_seen_this_period) : 0;
   time_t start_of_hs_stats_interval = is_v3 ?
     start_of_hs_v3_stats_interval : start_of_hs_v2_stats_interval;
 
diff --git a/src/feature/stats/rephist.h b/src/feature/stats/rephist.h
index de27b16ae0..7ecbfebfd7 100644
--- a/src/feature/stats/rephist.h
+++ b/src/feature/stats/rephist.h
@@ -67,9 +67,7 @@ void rep_hist_hs_stats_init(time_t now);
 void rep_hist_hs_stats_term(void);
 time_t rep_hist_hs_stats_write(time_t now, bool is_v3);
 
-char *rep_hist_get_hs_v2_stats_string(void);
 void rep_hist_seen_new_rp_cell(bool is_v2);
-void rep_hist_hsdir_stored_maybe_new_v2_onion(const crypto_pk_t *pubkey);
 
 char *rep_hist_get_hs_v3_stats_string(void);
 void rep_hist_hsdir_stored_maybe_new_v3_onion(const uint8_t *blinded_key);
@@ -93,10 +91,6 @@ extern int onion_handshakes_assigned[MAX_ONION_HANDSHAKE_TYPE+1];
 typedef struct hs_v2_stats_t {
   /** How many v2 relay cells have we seen as rendezvous points? */
   uint64_t rp_v2_relay_cells_seen;
-
-  /** Set of unique public key digests we've seen this stat period
-   * (could also be implemented as sorted smartlist). */
-  digestmap_t *v2_onions_seen_this_period;
 } hs_v2_stats_t;
 
 /** Structure that contains the various statistics we keep about v3



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