Move server-specific configuration changes from the networking stack to the server implementation

So they don't affect the client.

Author: solb

src/mica/network/dpdk.h

@@ -44,12 +44,12 @@ struct BasicDPDKConfig {
   // static constexpr uint16_t kMaxBurstSize = 32;
 
   // The number of RX/TX descriptors in each queue.
-  static constexpr uint16_t kRXDescCount = 256;
+  static constexpr uint16_t kRXDescCount = 128;
   static constexpr uint16_t kTXDescCount = 512;
 
   // The number of spare packet buffer count per queue.
   static constexpr uint16_t kSpareMBufCount =
-      6144 - kRXDescCount - kTXDescCount;
+      4096 - kRXDescCount - kTXDescCount;
 
   // The minimum required link speed (Gbps).
   static constexpr uint32_t kMinLinkSpeed = 10;

src/mica/test/server.cc

@@ -4,6 +4,8 @@
 
 struct DPDKConfig : public ::mica::network::BasicDPDKConfig {
   static constexpr bool kVerbose = true;
+  static constexpr uint16_t kRXDescCount = 256;
+  static constexpr uint16_t kSpareMBufCount = 6144 - kRXDescCount - kTXDescCount;
 };
 
 struct PartitionsConfig : public ::mica::processor::BasicPartitionsConfig {