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{S,G}etsockopt for TCP_KEEPCNT option.

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TCP_KEEPCNT is used to set the maximum keepalive probes to be
sent before dropping the connection.

WANT_LGTM=jchacon
PiperOrigin-RevId: 315758094
This commit is contained in:
Nayana Bidari
2020-06-10 13:37:27 -07:00
committed by gVisor bot
parent a5a4f80487
commit 4b9652d63b
3 changed files with 98 additions and 11 deletions
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pkg/sentry/socket/netstack/netstack.go
+24 -11
View File
@@ -1246,6 +1246,18 @@ func getSockOptTCP(t *kernel.Task, ep commonEndpoint, name, outLen int) (interfa
return int32(time.Duration(v) / time.Second), nil
case linux.TCP_KEEPCNT:
if outLen < sizeOfInt32 {
return nil, syserr.ErrInvalidArgument
}
v, err := ep.GetSockOptInt(tcpip.KeepaliveCountOption)
if err != nil {
return nil, syserr.TranslateNetstackError(err)
}
return int32(v), nil
case linux.TCP_USER_TIMEOUT:
if outLen < sizeOfInt32 {
return nil, syserr.ErrInvalidArgument
@@ -1786,6 +1798,17 @@ func setSockOptTCP(t *kernel.Task, ep commonEndpoint, name int, optVal []byte) *
}
return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.KeepaliveIntervalOption(time.Second * time.Duration(v))))
case linux.TCP_KEEPCNT:
if len(optVal) < sizeOfInt32 {
return syserr.ErrInvalidArgument
}
v := usermem.ByteOrder.Uint32(optVal)
if v < 1 || v > linux.MAX_TCP_KEEPCNT {
return syserr.ErrInvalidArgument
}
return syserr.TranslateNetstackError(ep.SetSockOptInt(tcpip.KeepaliveCountOption, int(v)))
case linux.TCP_USER_TIMEOUT:
if len(optVal) < sizeOfInt32 {
return syserr.ErrInvalidArgument
@@ -2115,30 +2138,20 @@ func emitUnimplementedEventTCP(t *kernel.Task, name int) {
switch name {
case linux.TCP_CONGESTION,
linux.TCP_CORK,
linux.TCP_DEFER_ACCEPT,
linux.TCP_FASTOPEN,
linux.TCP_FASTOPEN_CONNECT,
linux.TCP_FASTOPEN_KEY,
linux.TCP_FASTOPEN_NO_COOKIE,
linux.TCP_KEEPCNT,
linux.TCP_KEEPIDLE,
linux.TCP_KEEPINTVL,
linux.TCP_LINGER2,
linux.TCP_MAXSEG,
linux.TCP_QUEUE_SEQ,
linux.TCP_QUICKACK,
linux.TCP_REPAIR,
linux.TCP_REPAIR_QUEUE,
linux.TCP_REPAIR_WINDOW,
linux.TCP_SAVED_SYN,
linux.TCP_SAVE_SYN,
linux.TCP_SYNCNT,
linux.TCP_THIN_DUPACK,
linux.TCP_THIN_LINEAR_TIMEOUTS,
linux.TCP_TIMESTAMP,
linux.TCP_ULP,
linux.TCP_USER_TIMEOUT,
linux.TCP_WINDOW_CLAMP:
linux.TCP_ULP:
t.Kernel().EmitUnimplementedEvent(t)
}