added networking components, hosts are next

src/network/switch/dedicated_buffer.h

@@ -0,0 +1,38 @@
+#ifndef NETWORK_SWITCH_DEDICATED_BUFFER_H
+#define NETWORK_SWITCH_DEDICATED_BUFFER_H
+
+#include "network/switch/switch_buffer.h"
+
+namespace dofs {
+
+// DedicatedBuffer: buffer_size is split across ports (equal split by default).
+// Each port has a hard cap; no borrowing.
+class DedicatedBuffer : public SwitchBuffer {
+public:
+        DedicatedBuffer(Simulator* const sim,
+                        NetworkSwitch* const owner,
+                        Bytes total_bytes,
+                        uint16_t ports);
+
+        bool enqueue_packet(const Packet& pkt, PortId egress,
+                            FlowPriority prio) override;
+        bool drain_one(PortId port) override;
+
+protected:
+        std::array<std::deque<Queued>, PRI_COUNT> &queues_for(PortId p) override;
+        const std::array<std::deque<Queued>, PRI_COUNT> &queues_for(
+                PortId p) const override;
+
+        bool on_enqueue_cap_check(PortId port, Bytes sz) override;
+        void on_enqueue_commit(PortId port, Bytes sz) override;
+        void on_dequeue_commit(PortId port, Bytes sz) override;
+
+private:
+        // Hard cap per port (equal share of total; final remainder goes to low ports).
+        Bytes _per_port_cap;
+        std::vector<std::array<std::deque<Queued>, PRI_COUNT >> _per_port_queues;
+};
+
+} // namespace dofs
+
+#endif // NETWORK_SWITCH_DEDICATED_BUFFER_H