diff options
Diffstat (limited to 'pkg/tcpip/tcpip.go')
| -rw-r--r-- | pkg/tcpip/tcpip.go | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/pkg/tcpip/tcpip.go b/pkg/tcpip/tcpip.go index 1ca4088c9..b7b227328 100644 --- a/pkg/tcpip/tcpip.go +++ b/pkg/tcpip/tcpip.go @@ -110,6 +110,71 @@ var ( ErrAddressFamilyNotSupported = &Error{msg: "address family not supported by protocol"} ) +var messageToError map[string]*Error + +var populate sync.Once + +// StringToError converts an error message to the error. +func StringToError(s string) *Error { + populate.Do(func() { + var errors = []*Error{ + ErrUnknownProtocol, + ErrUnknownNICID, + ErrUnknownDevice, + ErrUnknownProtocolOption, + ErrDuplicateNICID, + ErrDuplicateAddress, + ErrNoRoute, + ErrBadLinkEndpoint, + ErrAlreadyBound, + ErrInvalidEndpointState, + ErrAlreadyConnecting, + ErrAlreadyConnected, + ErrNoPortAvailable, + ErrPortInUse, + ErrBadLocalAddress, + ErrClosedForSend, + ErrClosedForReceive, + ErrWouldBlock, + ErrConnectionRefused, + ErrTimeout, + ErrAborted, + ErrConnectStarted, + ErrDestinationRequired, + ErrNotSupported, + ErrQueueSizeNotSupported, + ErrNotConnected, + ErrConnectionReset, + ErrConnectionAborted, + ErrNoSuchFile, + ErrInvalidOptionValue, + ErrNoLinkAddress, + ErrBadAddress, + ErrNetworkUnreachable, + ErrMessageTooLong, + ErrNoBufferSpace, + ErrBroadcastDisabled, + ErrNotPermitted, + ErrAddressFamilyNotSupported, + } + + messageToError = make(map[string]*Error) + for _, e := range errors { + if messageToError[e.String()] != nil { + panic("tcpip errors with duplicated message: " + e.String()) + } + messageToError[e.String()] = e + } + }) + + e, ok := messageToError[s] + if !ok { + panic("unknown error message: " + s) + } + + return e +} + // Errors related to Subnet var ( errSubnetLengthMismatch = errors.New("subnet length of address and mask differ") @@ -622,6 +687,19 @@ const ( // // A zero value indicates the default. TTLOption + + // TCPSynCountOption is used by SetSockOpt/GetSockOpt to specify the number of + // SYN retransmits that TCP should send before aborting the attempt to + // connect. It cannot exceed 255. + // + // NOTE: This option is currently only stubbed out and is no-op. + TCPSynCountOption + + // TCPWindowClampOption is used by SetSockOpt/GetSockOpt to bound the size + // of the advertised window to this value. + // + // NOTE: This option is currently only stubed out and is a no-op + TCPWindowClampOption ) // ErrorOption is used in GetSockOpt to specify that the last error reported by @@ -685,11 +763,23 @@ type TCPDeferAcceptOption time.Duration // default MinRTO used by the Stack. type TCPMinRTOOption time.Duration +// TCPMaxRTOOption is use by SetSockOpt/GetSockOpt to allow overriding +// default MaxRTO used by the Stack. +type TCPMaxRTOOption time.Duration + +// TCPMaxRetriesOption is used by SetSockOpt/GetSockOpt to set/get the +// maximum number of retransmits after which we time out the connection. +type TCPMaxRetriesOption uint64 + // 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 +// 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 + // MulticastInterfaceOption is used by SetSockOpt/GetSockOpt to specify a // default interface for multicast. type MulticastInterfaceOption struct { |