diff options
Diffstat (limited to 'pkg/tcpip/tcpip.go')
| -rw-r--r-- | pkg/tcpip/tcpip.go | 59 |
1 files changed, 41 insertions, 18 deletions
diff --git a/pkg/tcpip/tcpip.go b/pkg/tcpip/tcpip.go index 87ea09a5e..0ba71b62e 100644 --- a/pkg/tcpip/tcpip.go +++ b/pkg/tcpip/tcpip.go @@ -691,10 +691,6 @@ const ( // number of unread bytes in the input buffer should be returned. ReceiveQueueSizeOption - // ReceiveBufferSizeOption is used by SetSockOptInt/GetSockOptInt to - // specify the receive buffer size option. - ReceiveBufferSizeOption - // SendQueueSizeOption is used in GetSockOptInt to specify that the // number of unread bytes in the output buffer should be returned. SendQueueSizeOption @@ -786,6 +782,13 @@ func (*TCPRecovery) isGettableTransportProtocolOption() {} func (*TCPRecovery) isSettableTransportProtocolOption() {} +// TCPAlwaysUseSynCookies indicates unconditional usage of syncookies. +type TCPAlwaysUseSynCookies bool + +func (*TCPAlwaysUseSynCookies) isGettableTransportProtocolOption() {} + +func (*TCPAlwaysUseSynCookies) isSettableTransportProtocolOption() {} + const ( // TCPRACKLossDetection indicates RACK is used for loss detection and // recovery. @@ -1020,19 +1023,6 @@ func (*TCPMaxRetriesOption) isGettableTransportProtocolOption() {} func (*TCPMaxRetriesOption) isSettableTransportProtocolOption() {} -// TCPSynRcvdCountThresholdOption is used by SetSockOpt/GetSockOpt to specify -// the number of endpoints that can be in SYN-RCVD state before the stack -// switches to using SYN cookies. -type TCPSynRcvdCountThresholdOption uint64 - -func (*TCPSynRcvdCountThresholdOption) isGettableSocketOption() {} - -func (*TCPSynRcvdCountThresholdOption) isSettableSocketOption() {} - -func (*TCPSynRcvdCountThresholdOption) isGettableTransportProtocolOption() {} - -func (*TCPSynRcvdCountThresholdOption) isSettableTransportProtocolOption() {} - // TCPSynRetriesOption is used by SetSockOpt/GetSockOpt to specify stack-wide // default for number of times SYN is retransmitted before aborting a connect. type TCPSynRetriesOption uint8 @@ -1150,6 +1140,19 @@ type SendBufferSizeOption struct { Max int } +// ReceiveBufferSizeOption is used by stack.(Stack*).Option/SetOption to +// get/set the default, min and max receive buffer sizes. +type ReceiveBufferSizeOption struct { + // Min is the minimum size for send buffer. + Min int + + // Default is the default size for send buffer. + Default int + + // Max is the maximum size for send buffer. + Max int +} + // GetSendBufferLimits is used to get the send buffer size limits. type GetSendBufferLimits func(StackHandler) SendBufferSizeOption @@ -1162,6 +1165,18 @@ func GetStackSendBufferLimits(so StackHandler) SendBufferSizeOption { return ss } +// GetReceiveBufferLimits is used to get the send buffer size limits. +type GetReceiveBufferLimits func(StackHandler) ReceiveBufferSizeOption + +// GetStackReceiveBufferLimits is used to get default, min and max send buffer size. +func GetStackReceiveBufferLimits(so StackHandler) ReceiveBufferSizeOption { + var ss ReceiveBufferSizeOption + if err := so.Option(&ss); err != nil { + panic(fmt.Sprintf("s.Option(%#v) = %s", ss, err)) + } + return ss +} + // Route is a row in the routing table. It specifies through which NIC (and // gateway) sets of packets should be routed. A row is considered viable if the // masked target address matches the destination address in the row. @@ -1218,7 +1233,7 @@ func (s *StatCounter) Decrement() { } // Value returns the current value of the counter. -func (s *StatCounter) Value() uint64 { +func (s *StatCounter) Value(name ...string) uint64 { return atomic.LoadUint64(&s.count) } @@ -1562,6 +1577,10 @@ type IPStats struct { // chain. IPTablesOutputDropped *StatCounter + // IPTablesPostroutingDropped is the number of IP packets dropped in the + // Postrouting chain. + IPTablesPostroutingDropped *StatCounter + // TODO(https://gvisor.dev/issues/5529): Move the IPv4-only option stats out // of IPStats. // OptionTimestampReceived is the number of Timestamp options seen. @@ -1734,6 +1753,10 @@ type TCPStats struct { // ChecksumErrors is the number of segments dropped due to bad checksums. ChecksumErrors *StatCounter + + // FailedPortReservations is the number of times TCP failed to reserve + // a port. + FailedPortReservations *StatCounter } // UDPStats collects UDP-specific stats. |