fix: preserve Unlimited StreamsInbound in connmgr reconciliation

Fixes ipfs#9695

Author: Jorropo

core/node/libp2p/rcmgr.go

@@ -459,27 +459,31 @@ func ensureConnMgrMakeSenseVsResourceMgr(concreteLimits rcmgr.ConcreteLimitConfi
 		return fmt.Errorf(`
 Unable to initialize libp2p due to conflicting resource manager limit configuration.
 resource manager System.Conns (%d) must be bigger than ConnMgr.HighWater (%d)
+See: https://github.com/ipfs/kubo/blob/master/docs/libp2p-resource-management.md#how-does-the-resource-manager-resourcemgr-relate-to-the-connection-manager-connmgr
 `, rcm.System.Conns, highWater)
 	}
 	if rcm.System.ConnsInbound != rcmgr.Unlimited && int64(rcm.System.ConnsInbound) <= highWater {
 		// nolint
 		return fmt.Errorf(`
 Unable to initialize libp2p due to conflicting resource manager limit configuration.
 resource manager System.ConnsInbound (%d) must be bigger than ConnMgr.HighWater (%d)
+See: https://github.com/ipfs/kubo/blob/master/docs/libp2p-resource-management.md#how-does-the-resource-manager-resourcemgr-relate-to-the-connection-manager-connmgr
 `, rcm.System.ConnsInbound, highWater)
 	}
 	if rcm.System.Streams != rcmgr.Unlimited && int64(rcm.System.Streams) <= highWater {
 		// nolint
 		return fmt.Errorf(`
 Unable to initialize libp2p due to conflicting resource manager limit configuration.
 resource manager System.Streams (%d) must be bigger than ConnMgr.HighWater (%d)
+See: https://github.com/ipfs/kubo/blob/master/docs/libp2p-resource-management.md#how-does-the-resource-manager-resourcemgr-relate-to-the-connection-manager-connmgr
 `, rcm.System.Streams, highWater)
 	}
 	if rcm.System.StreamsInbound != rcmgr.Unlimited && int64(rcm.System.StreamsInbound) <= highWater {
 		// nolint
 		return fmt.Errorf(`
 Unable to initialize libp2p due to conflicting resource manager limit configuration.
 resource manager System.StreamsInbound (%d) must be bigger than ConnMgr.HighWater (%d)
+See: https://github.com/ipfs/kubo/blob/master/docs/libp2p-resource-management.md#how-does-the-resource-manager-resourcemgr-relate-to-the-connection-manager-connmgr
 `, rcm.System.StreamsInbound, highWater)
 	}
 	return nil

core/node/libp2p/rcmgr_defaults.go

@@ -129,7 +129,9 @@ func createDefaultLimitConfig(cfg config.SwarmConfig) (limitConfig rcmgr.Concret
 		}
 
 		// Scale System.StreamsInbound as well, but use the existing ratio of StreamsInbound to ConnsInbound
-		partialLimits.System.StreamsInbound = rcmgr.LimitVal(maxInboundConns * int64(partialLimits.System.StreamsInbound) / int64(partialLimits.System.ConnsInbound))
+		if partialLimits.System.StreamsInbound != rcmgr.Unlimited {
+			partialLimits.System.StreamsInbound = rcmgr.LimitVal(maxInboundConns * int64(partialLimits.System.StreamsInbound) / int64(partialLimits.System.ConnsInbound))
+		}
 		partialLimits.System.ConnsInbound = rcmgr.LimitVal(maxInboundConns)
 	}