From abbdcebc543242862fad0984db2db0a842021917 Mon Sep 17 00:00:00 2001
From: Kevin Krakauer <krakauer@google.com>
Date: Mon, 8 Mar 2021 20:37:14 -0800
Subject: Implement /proc/sys/net/ipv4/ip_local_port_range

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

PiperOrigin-RevId: 361721050
---
 pkg/sentry/inet/inet.go | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'pkg/sentry/inet/inet.go')

diff --git a/pkg/sentry/inet/inet.go b/pkg/sentry/inet/inet.go
index f31277d30..6b71bd3a9 100644
--- a/pkg/sentry/inet/inet.go
+++ b/pkg/sentry/inet/inet.go
@@ -93,6 +93,14 @@ type Stack interface {
 
 	// SetForwarding enables or disables packet forwarding between NICs.
 	SetForwarding(protocol tcpip.NetworkProtocolNumber, enable bool) error
+
+	// PortRange returns the UDP and TCP inclusive range of ephemeral ports
+	// used in both IPv4 and IPv6.
+	PortRange() (uint16, uint16)
+
+	// SetPortRange sets the UDP and TCP IPv4 and IPv6 ephemeral port range
+	// (inclusive).
+	SetPortRange(start uint16, end uint16) error
 }
 
 // Interface contains information about a network interface.
-- 
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