diff options
Diffstat (limited to 'pkg/tcpip/stack/stack.go')
| -rw-r--r-- | pkg/tcpip/stack/stack.go | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/pkg/tcpip/stack/stack.go b/pkg/tcpip/stack/stack.go index c73890c4c..8e5c6edbf 100644 --- a/pkg/tcpip/stack/stack.go +++ b/pkg/tcpip/stack/stack.go @@ -119,8 +119,7 @@ type Stack struct { // by the stack. icmpRateLimiter *ICMPRateLimiter - // seed is a one-time random value initialized at stack startup - // and is used to seed the TCP port picking on active connections + // seed is a one-time random value initialized at stack startup. // // TODO(gvisor.dev/issue/940): S/R this field. seed uint32 @@ -161,6 +160,10 @@ type Stack struct { // This is required to prevent potential ACK loops. // Setting this to 0 will disable all rate limiting. tcpInvalidRateLimit time.Duration + + // tsOffsetSecret is the secret key for generating timestamp offsets + // initialized at stack startup. + tsOffsetSecret uint32 } // UniqueID is an abstract generator of unique identifiers. @@ -384,6 +387,7 @@ func New(opts Options) *Stack { Max: DefaultMaxBufferSize, }, tcpInvalidRateLimit: defaultTCPInvalidRateLimit, + tsOffsetSecret: randomGenerator.Uint32(), } // Add specified network protocols. @@ -1819,14 +1823,6 @@ func (s *Stack) SetNUDConfigurations(id tcpip.NICID, proto tcpip.NetworkProtocol return nic.setNUDConfigs(proto, c) } -// Seed returns a 32 bit value that can be used as a seed value for port -// picking, ISN generation etc. -// -// NOTE: The seed is generated once during stack initialization only. -func (s *Stack) Seed() uint32 { - return s.seed -} - // Rand returns a reference to a pseudo random generator that can be used // to generate random numbers as required. func (s *Stack) Rand() *rand.Rand { |