Merge pull request #3368

38657fd0 Bump min ring size from 5 to 7 from v7 (moneromooo-monero)

src/cryptonote_config.h

@@ -132,6 +132,7 @@
 
 #define HF_VERSION_DYNAMIC_FEE                  4
 #define HF_VERSION_MIN_MIXIN_4                  6
+#define HF_VERSION_MIN_MIXIN_6                  7
 #define HF_VERSION_ENFORCE_RCT                  6
 
 #define PER_KB_FEE_QUANTIZATION_DECIMALS        8

src/cryptonote_core/blockchain.cpp

@@ -2531,7 +2531,7 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
   {
     size_t n_unmixable = 0, n_mixable = 0;
     size_t mixin = std::numeric_limits<size_t>::max();
-    const size_t min_mixin = hf_version >= HF_VERSION_MIN_MIXIN_4 ? 4 : 2;
+    const size_t min_mixin = hf_version >= HF_VERSION_MIN_MIXIN_6 ? 6 : hf_version >= HF_VERSION_MIN_MIXIN_4 ? 4 : 2;
     for (const auto& txin : tx.vin)
     {
       // non txin_to_key inputs will be rejected below

src/simplewallet/simplewallet.cpp

@@ -86,9 +86,9 @@ typedef cryptonote::simple_wallet sw;
 
 #define EXTENDED_LOGS_FILE "wallet_details.log"
 
-#define DEFAULT_MIX 4
+#define DEFAULT_MIX 6
 
-#define MIN_RING_SIZE 5 // Used to inform user about min ring size -- does not track actual protocol
+#define MIN_RING_SIZE 7 // Used to inform user about min ring size -- does not track actual protocol
 
 #define OUTPUT_EXPORT_FILE_MAGIC "Monero output export\003"
 

src/wallet/wallet2.cpp

@@ -5089,7 +5089,11 @@ int wallet2::get_fee_algorithm() const
 //------------------------------------------------------------------------------------------------------------------------------
 uint64_t wallet2::adjust_mixin(uint64_t mixin) const
 {
-  if (mixin < 4 && use_fork_rules(6, 10)) {
+  if (mixin < 6 && use_fork_rules(7, 10)) {
+    MWARNING("Requested ring size " << (mixin + 1) << " too low for hard fork 7, using 7");
+    mixin = 6;
+  }
+  else if (mixin < 4 && use_fork_rules(6, 10)) {
     MWARNING("Requested ring size " << (mixin + 1) << " too low for hard fork 6, using 5");
     mixin = 4;
   }