allow using ring size instead of mixin for rpc transfer

src/wallet/wallet_rpc_server.cpp

@@ -786,7 +786,15 @@ namespace tools
 
     try
     {
-      uint64_t mixin = m_wallet->adjust_mixin(req.mixin);
+      uint64_t mixin;
+      if(req.ring_size != 0)
+      {
+        mixin = m_wallet->adjust_mixin(req.ring_size - 1);
+      }
+      else
+      {
+        mixin = m_wallet->adjust_mixin(req.mixin);
+      }
       uint32_t priority = m_wallet->adjust_priority(req.priority);
       std::vector<wallet2::pending_tx> ptx_vector = m_wallet->create_transactions_2(dsts, mixin, req.unlock_time, priority, extra, req.account_index, req.subaddr_indices, m_trusted_daemon);
 
@@ -838,7 +846,15 @@ namespace tools
 
     try
     {
-      uint64_t mixin = m_wallet->adjust_mixin(req.mixin);
+      uint64_t mixin;
+      if(req.ring_size != 0)
+      {
+        mixin = m_wallet->adjust_mixin(req.ring_size - 1);
+      }
+      else
+      {
+        mixin = m_wallet->adjust_mixin(req.mixin);
+      }
       uint32_t priority = m_wallet->adjust_priority(req.priority);
       LOG_PRINT_L2("on_transfer_split calling create_transactions_2");
       std::vector<wallet2::pending_tx> ptx_vector = m_wallet->create_transactions_2(dsts, mixin, req.unlock_time, priority, extra, req.account_index, req.subaddr_indices, m_trusted_daemon);
@@ -905,7 +921,15 @@ namespace tools
 
     try
     {
-      uint64_t mixin = m_wallet->adjust_mixin(req.mixin);
+      uint64_t mixin;
+      if(req.ring_size != 0)
+      {
+        mixin = m_wallet->adjust_mixin(req.ring_size - 1);
+      }
+      else
+      {
+        mixin = m_wallet->adjust_mixin(req.mixin);
+      }
       uint32_t priority = m_wallet->adjust_priority(req.priority);
       std::vector<wallet2::pending_tx> ptx_vector = m_wallet->create_transactions_all(req.below_amount, dsts[0].addr, dsts[0].is_subaddress, mixin, req.unlock_time, priority, extra, req.account_index, req.subaddr_indices, m_trusted_daemon);
 
@@ -953,7 +977,15 @@ namespace tools
 
     try
     {
-      uint64_t mixin = m_wallet->adjust_mixin(req.mixin);
+      uint64_t mixin;
+      if(req.ring_size != 0)
+      {
+        mixin = m_wallet->adjust_mixin(req.ring_size - 1);
+      }
+      else
+      {
+        mixin = m_wallet->adjust_mixin(req.mixin);
+      }
       uint32_t priority = m_wallet->adjust_priority(req.priority);
       std::vector<wallet2::pending_tx> ptx_vector = m_wallet->create_transactions_single(ki, dsts[0].addr, dsts[0].is_subaddress, mixin, req.unlock_time, priority, extra, m_trusted_daemon);
 

src/wallet/wallet_rpc_server_commands_defs.h

@@ -385,6 +385,7 @@ namespace wallet_rpc
       std::set<uint32_t> subaddr_indices;
       uint32_t priority;
       uint64_t mixin;
+      uint64_t ring_size;
       uint64_t unlock_time;
       std::string payment_id;
       bool get_tx_key;
@@ -398,6 +399,7 @@ namespace wallet_rpc
         KV_SERIALIZE(subaddr_indices)
         KV_SERIALIZE(priority)
         KV_SERIALIZE(mixin)
+        KV_SERIALIZE_OPT(ring_size, (uint64_t)0)
         KV_SERIALIZE(unlock_time)
         KV_SERIALIZE(payment_id)
         KV_SERIALIZE(get_tx_key)
@@ -440,6 +442,7 @@ namespace wallet_rpc
       std::set<uint32_t> subaddr_indices;
       uint32_t priority;
       uint64_t mixin;
+      uint64_t ring_size;
       uint64_t unlock_time;
       std::string payment_id;
       bool get_tx_keys;
@@ -453,6 +456,7 @@ namespace wallet_rpc
         KV_SERIALIZE(subaddr_indices)
         KV_SERIALIZE(priority)
         KV_SERIALIZE(mixin)
+        KV_SERIALIZE_OPT(ring_size, (uint64_t)0)
         KV_SERIALIZE(unlock_time)
         KV_SERIALIZE(payment_id)
         KV_SERIALIZE(get_tx_keys)
@@ -550,6 +554,7 @@ namespace wallet_rpc
       std::set<uint32_t> subaddr_indices;
       uint32_t priority;
       uint64_t mixin;
+      uint64_t ring_size;
       uint64_t unlock_time;
       std::string payment_id;
       bool get_tx_keys;
@@ -564,6 +569,7 @@ namespace wallet_rpc
         KV_SERIALIZE(subaddr_indices)
         KV_SERIALIZE(priority)
         KV_SERIALIZE(mixin)
+        KV_SERIALIZE_OPT(ring_size, (uint64_t)0)
         KV_SERIALIZE(unlock_time)
         KV_SERIALIZE(payment_id)
         KV_SERIALIZE(get_tx_keys)
@@ -612,6 +618,7 @@ namespace wallet_rpc
       std::string address;
       uint32_t priority;
       uint64_t mixin;
+      uint64_t ring_size;
       uint64_t unlock_time;
       std::string payment_id;
       bool get_tx_key;
@@ -624,6 +631,7 @@ namespace wallet_rpc
         KV_SERIALIZE(address)
         KV_SERIALIZE(priority)
         KV_SERIALIZE(mixin)
+        KV_SERIALIZE_OPT(ring_size, (uint64_t)0)
         KV_SERIALIZE(unlock_time)
         KV_SERIALIZE(payment_id)
         KV_SERIALIZE(get_tx_key)