add methods on net interface to retrieve bandwidth values

net/interface.go

@@ -29,6 +29,10 @@ type Network interface {
 	// GetPeerList returns the list of peers currently connected in this network.
 	GetPeerList() []*peer.Peer
 
+	// GetBandwidthTotals returns the total number of bytes passed through
+	// the network since it was instantiated
+	GetBandwidthTotals() (uint64, uint64)
+
 	// SendMessage sends given Message out
 	SendMessage(msg.NetMessage) error
 

net/net.go

@@ -111,3 +111,7 @@ func (n *IpfsNetwork) Close() error {
 func (n *IpfsNetwork) GetPeerList() []*peer.Peer {
 	return n.swarm.GetPeerList()
 }
+
+func (n *IpfsNetwork) GetBandwidthTotals() (in uint64, out uint64) {
+	return n.muxer.GetBandwidthTotals()
+}