Implement /proc/sys/net/ipv4/ip_local_port_range

Speeds up the socket stress tests by a couple orders of magnitude.

PiperOrigin-RevId: 361721050

1 files changed, 12 insertions, 0 deletions

diff --git a/pkg/tcpip/stack/stack.go b/pkg/tcpip/stack/stack.go
index de94ddfda..53370c354 100644
--- a/pkg/tcpip/stack/stack.go
+++ b/pkg/tcpip/stack/stack.go
@@ -813,6 +813,18 @@ func (s *Stack) Forwarding(protocolNum tcpip.NetworkProtocolNumber) bool {
 	return forwardingProtocol.Forwarding()
 }
 
+// PortRange returns the UDP and TCP inclusive range of ephemeral ports used in
+// both IPv4 and IPv6.
+func (s *Stack) PortRange() (uint16, uint16) {
+	return s.PortManager.PortRange()
+}
+
+// SetPortRange sets the UDP and TCP IPv4 and IPv6 ephemeral port range
+// (inclusive).
+func (s *Stack) SetPortRange(start uint16, end uint16) tcpip.Error {
+	return s.PortManager.SetPortRange(start, end)
+}
+
 // SetRouteTable assigns the route table to be used by this stack. It
 // specifies which NIC to use for given destination address ranges.
 //