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kernel-ark/include/linux/snmp.h
Yuchung Cheng 783237e8da net-tcp: Fast Open client - sending SYN-data 
This patch implements sending SYN-data in tcp_connect(). The data is
from tcp_sendmsg() with flag MSG_FASTOPEN (implemented in a later patch).

The length of the cookie in tcp_fastopen_req, init'd to 0, controls the
type of the SYN. If the cookie is not cached (len==0), the host sends
data-less SYN with Fast Open cookie request option to solicit a cookie
from the remote. If cookie is not available (len > 0), the host sends
a SYN-data with Fast Open cookie option. If cookie length is negative,
  the SYN will not include any Fast Open option (for fall back operations).

To deal with middleboxes that may drop SYN with data or experimental TCP
option, the SYN-data is only sent once. SYN retransmits do not include
data or Fast Open options. The connection will fall back to regular TCP
handshake.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-19 11:02:03 -07:00

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/*
* Definitions for MIBs
*
* Author: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
*/
#ifndef _LINUX_SNMP_H
#define _LINUX_SNMP_H
/* ipstats mib definitions */
/*
* RFC 1213: MIB-II
* RFC 2011 (updates 1213): SNMPv2-MIB-IP
* RFC 2863: Interfaces Group MIB
* RFC 2465: IPv6 MIB: General Group
* draft-ietf-ipv6-rfc2011-update-10.txt: MIB for IP: IP Statistics Tables
*/
enum
{
IPSTATS_MIB_NUM = 0,
IPSTATS_MIB_INPKTS, /* InReceives */
IPSTATS_MIB_INHDRERRORS, /* InHdrErrors */
IPSTATS_MIB_INTOOBIGERRORS, /* InTooBigErrors */
IPSTATS_MIB_INNOROUTES, /* InNoRoutes */
IPSTATS_MIB_INADDRERRORS, /* InAddrErrors */
IPSTATS_MIB_INUNKNOWNPROTOS, /* InUnknownProtos */
IPSTATS_MIB_INTRUNCATEDPKTS, /* InTruncatedPkts */
IPSTATS_MIB_INDISCARDS, /* InDiscards */
IPSTATS_MIB_INDELIVERS, /* InDelivers */
IPSTATS_MIB_OUTFORWDATAGRAMS, /* OutForwDatagrams */
IPSTATS_MIB_OUTPKTS, /* OutRequests */
IPSTATS_MIB_OUTDISCARDS, /* OutDiscards */
IPSTATS_MIB_OUTNOROUTES, /* OutNoRoutes */
IPSTATS_MIB_REASMTIMEOUT, /* ReasmTimeout */
IPSTATS_MIB_REASMREQDS, /* ReasmReqds */
IPSTATS_MIB_REASMOKS, /* ReasmOKs */
IPSTATS_MIB_REASMFAILS, /* ReasmFails */
IPSTATS_MIB_FRAGOKS, /* FragOKs */
IPSTATS_MIB_FRAGFAILS, /* FragFails */
IPSTATS_MIB_FRAGCREATES, /* FragCreates */
IPSTATS_MIB_INMCASTPKTS, /* InMcastPkts */
IPSTATS_MIB_OUTMCASTPKTS, /* OutMcastPkts */
IPSTATS_MIB_INBCASTPKTS, /* InBcastPkts */
IPSTATS_MIB_OUTBCASTPKTS, /* OutBcastPkts */
IPSTATS_MIB_INOCTETS, /* InOctets */
IPSTATS_MIB_OUTOCTETS, /* OutOctets */
IPSTATS_MIB_INMCASTOCTETS, /* InMcastOctets */
IPSTATS_MIB_OUTMCASTOCTETS, /* OutMcastOctets */
IPSTATS_MIB_INBCASTOCTETS, /* InBcastOctets */
IPSTATS_MIB_OUTBCASTOCTETS, /* OutBcastOctets */
__IPSTATS_MIB_MAX
};
/* icmp mib definitions */
/*
* RFC 1213: MIB-II ICMP Group
* RFC 2011 (updates 1213): SNMPv2 MIB for IP: ICMP group
*/
enum
{
ICMP_MIB_NUM = 0,
ICMP_MIB_INMSGS, /* InMsgs */
ICMP_MIB_INERRORS, /* InErrors */
ICMP_MIB_INDESTUNREACHS, /* InDestUnreachs */
ICMP_MIB_INTIMEEXCDS, /* InTimeExcds */
ICMP_MIB_INPARMPROBS, /* InParmProbs */
ICMP_MIB_INSRCQUENCHS, /* InSrcQuenchs */
ICMP_MIB_INREDIRECTS, /* InRedirects */
ICMP_MIB_INECHOS, /* InEchos */
ICMP_MIB_INECHOREPS, /* InEchoReps */
ICMP_MIB_INTIMESTAMPS, /* InTimestamps */
ICMP_MIB_INTIMESTAMPREPS, /* InTimestampReps */
ICMP_MIB_INADDRMASKS, /* InAddrMasks */
ICMP_MIB_INADDRMASKREPS, /* InAddrMaskReps */
ICMP_MIB_OUTMSGS, /* OutMsgs */
ICMP_MIB_OUTERRORS, /* OutErrors */
ICMP_MIB_OUTDESTUNREACHS, /* OutDestUnreachs */
ICMP_MIB_OUTTIMEEXCDS, /* OutTimeExcds */
ICMP_MIB_OUTPARMPROBS, /* OutParmProbs */
ICMP_MIB_OUTSRCQUENCHS, /* OutSrcQuenchs */
ICMP_MIB_OUTREDIRECTS, /* OutRedirects */
ICMP_MIB_OUTECHOS, /* OutEchos */
ICMP_MIB_OUTECHOREPS, /* OutEchoReps */
ICMP_MIB_OUTTIMESTAMPS, /* OutTimestamps */
ICMP_MIB_OUTTIMESTAMPREPS, /* OutTimestampReps */
ICMP_MIB_OUTADDRMASKS, /* OutAddrMasks */
ICMP_MIB_OUTADDRMASKREPS, /* OutAddrMaskReps */
__ICMP_MIB_MAX
};
#define __ICMPMSG_MIB_MAX 512 /* Out+In for all 8-bit ICMP types */
/* icmp6 mib definitions */
/*
* RFC 2466: ICMPv6-MIB
*/
enum
{
ICMP6_MIB_NUM = 0,
ICMP6_MIB_INMSGS, /* InMsgs */
ICMP6_MIB_INERRORS, /* InErrors */
ICMP6_MIB_OUTMSGS, /* OutMsgs */
ICMP6_MIB_OUTERRORS, /* OutErrors */
__ICMP6_MIB_MAX
};
#define __ICMP6MSG_MIB_MAX 512 /* Out+In for all 8-bit ICMPv6 types */
/* tcp mib definitions */
/*
* RFC 1213: MIB-II TCP group
* RFC 2012 (updates 1213): SNMPv2-MIB-TCP
*/
enum
{
TCP_MIB_NUM = 0,
TCP_MIB_RTOALGORITHM, /* RtoAlgorithm */
TCP_MIB_RTOMIN, /* RtoMin */
TCP_MIB_RTOMAX, /* RtoMax */
TCP_MIB_MAXCONN, /* MaxConn */
TCP_MIB_ACTIVEOPENS, /* ActiveOpens */
TCP_MIB_PASSIVEOPENS, /* PassiveOpens */
TCP_MIB_ATTEMPTFAILS, /* AttemptFails */
TCP_MIB_ESTABRESETS, /* EstabResets */
TCP_MIB_CURRESTAB, /* CurrEstab */
TCP_MIB_INSEGS, /* InSegs */
TCP_MIB_OUTSEGS, /* OutSegs */
TCP_MIB_RETRANSSEGS, /* RetransSegs */
TCP_MIB_INERRS, /* InErrs */
TCP_MIB_OUTRSTS, /* OutRsts */
__TCP_MIB_MAX
};
/* udp mib definitions */
/*
* RFC 1213: MIB-II UDP group
* RFC 2013 (updates 1213): SNMPv2-MIB-UDP
*/
enum
{
UDP_MIB_NUM = 0,
UDP_MIB_INDATAGRAMS, /* InDatagrams */
UDP_MIB_NOPORTS, /* NoPorts */
UDP_MIB_INERRORS, /* InErrors */
UDP_MIB_OUTDATAGRAMS, /* OutDatagrams */
UDP_MIB_RCVBUFERRORS, /* RcvbufErrors */
UDP_MIB_SNDBUFERRORS, /* SndbufErrors */
__UDP_MIB_MAX
};
/* linux mib definitions */
enum
{
LINUX_MIB_NUM = 0,
LINUX_MIB_SYNCOOKIESSENT, /* SyncookiesSent */
LINUX_MIB_SYNCOOKIESRECV, /* SyncookiesRecv */
LINUX_MIB_SYNCOOKIESFAILED, /* SyncookiesFailed */
LINUX_MIB_EMBRYONICRSTS, /* EmbryonicRsts */
LINUX_MIB_PRUNECALLED, /* PruneCalled */
LINUX_MIB_RCVPRUNED, /* RcvPruned */
LINUX_MIB_OFOPRUNED, /* OfoPruned */
LINUX_MIB_OUTOFWINDOWICMPS, /* OutOfWindowIcmps */
LINUX_MIB_LOCKDROPPEDICMPS, /* LockDroppedIcmps */
LINUX_MIB_ARPFILTER, /* ArpFilter */
LINUX_MIB_TIMEWAITED, /* TimeWaited */
LINUX_MIB_TIMEWAITRECYCLED, /* TimeWaitRecycled */
LINUX_MIB_TIMEWAITKILLED, /* TimeWaitKilled */
LINUX_MIB_PAWSPASSIVEREJECTED, /* PAWSPassiveRejected */
LINUX_MIB_PAWSACTIVEREJECTED, /* PAWSActiveRejected */
LINUX_MIB_PAWSESTABREJECTED, /* PAWSEstabRejected */
LINUX_MIB_DELAYEDACKS, /* DelayedACKs */
LINUX_MIB_DELAYEDACKLOCKED, /* DelayedACKLocked */
LINUX_MIB_DELAYEDACKLOST, /* DelayedACKLost */
LINUX_MIB_LISTENOVERFLOWS, /* ListenOverflows */
LINUX_MIB_LISTENDROPS, /* ListenDrops */
LINUX_MIB_TCPPREQUEUED, /* TCPPrequeued */
LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG, /* TCPDirectCopyFromBacklog */
LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE, /* TCPDirectCopyFromPrequeue */
LINUX_MIB_TCPPREQUEUEDROPPED, /* TCPPrequeueDropped */
LINUX_MIB_TCPHPHITS, /* TCPHPHits */
LINUX_MIB_TCPHPHITSTOUSER, /* TCPHPHitsToUser */
LINUX_MIB_TCPPUREACKS, /* TCPPureAcks */
LINUX_MIB_TCPHPACKS, /* TCPHPAcks */
LINUX_MIB_TCPRENORECOVERY, /* TCPRenoRecovery */
LINUX_MIB_TCPSACKRECOVERY, /* TCPSackRecovery */
LINUX_MIB_TCPSACKRENEGING, /* TCPSACKReneging */
LINUX_MIB_TCPFACKREORDER, /* TCPFACKReorder */
LINUX_MIB_TCPSACKREORDER, /* TCPSACKReorder */
LINUX_MIB_TCPRENOREORDER, /* TCPRenoReorder */
LINUX_MIB_TCPTSREORDER, /* TCPTSReorder */
LINUX_MIB_TCPFULLUNDO, /* TCPFullUndo */
LINUX_MIB_TCPPARTIALUNDO, /* TCPPartialUndo */
LINUX_MIB_TCPDSACKUNDO, /* TCPDSACKUndo */
LINUX_MIB_TCPLOSSUNDO, /* TCPLossUndo */
LINUX_MIB_TCPLOSTRETRANSMIT, /* TCPLostRetransmit */
LINUX_MIB_TCPRENOFAILURES, /* TCPRenoFailures */
LINUX_MIB_TCPSACKFAILURES, /* TCPSackFailures */
LINUX_MIB_TCPLOSSFAILURES, /* TCPLossFailures */
LINUX_MIB_TCPFASTRETRANS, /* TCPFastRetrans */
LINUX_MIB_TCPFORWARDRETRANS, /* TCPForwardRetrans */
LINUX_MIB_TCPSLOWSTARTRETRANS, /* TCPSlowStartRetrans */
LINUX_MIB_TCPTIMEOUTS, /* TCPTimeouts */
LINUX_MIB_TCPRENORECOVERYFAIL, /* TCPRenoRecoveryFail */
LINUX_MIB_TCPSACKRECOVERYFAIL, /* TCPSackRecoveryFail */
LINUX_MIB_TCPSCHEDULERFAILED, /* TCPSchedulerFailed */
LINUX_MIB_TCPRCVCOLLAPSED, /* TCPRcvCollapsed */
LINUX_MIB_TCPDSACKOLDSENT, /* TCPDSACKOldSent */
LINUX_MIB_TCPDSACKOFOSENT, /* TCPDSACKOfoSent */
LINUX_MIB_TCPDSACKRECV, /* TCPDSACKRecv */
LINUX_MIB_TCPDSACKOFORECV, /* TCPDSACKOfoRecv */
LINUX_MIB_TCPABORTONDATA, /* TCPAbortOnData */
LINUX_MIB_TCPABORTONCLOSE, /* TCPAbortOnClose */
LINUX_MIB_TCPABORTONMEMORY, /* TCPAbortOnMemory */
LINUX_MIB_TCPABORTONTIMEOUT, /* TCPAbortOnTimeout */
LINUX_MIB_TCPABORTONLINGER, /* TCPAbortOnLinger */
LINUX_MIB_TCPABORTFAILED, /* TCPAbortFailed */
LINUX_MIB_TCPMEMORYPRESSURES, /* TCPMemoryPressures */
LINUX_MIB_TCPSACKDISCARD, /* TCPSACKDiscard */
LINUX_MIB_TCPDSACKIGNOREDOLD, /* TCPSACKIgnoredOld */
LINUX_MIB_TCPDSACKIGNOREDNOUNDO, /* TCPSACKIgnoredNoUndo */
LINUX_MIB_TCPSPURIOUSRTOS, /* TCPSpuriousRTOs */
LINUX_MIB_TCPMD5NOTFOUND, /* TCPMD5NotFound */
LINUX_MIB_TCPMD5UNEXPECTED, /* TCPMD5Unexpected */
LINUX_MIB_SACKSHIFTED,
LINUX_MIB_SACKMERGED,
LINUX_MIB_SACKSHIFTFALLBACK,
LINUX_MIB_TCPBACKLOGDROP,
LINUX_MIB_TCPMINTTLDROP, /* RFC 5082 */
LINUX_MIB_TCPDEFERACCEPTDROP,
LINUX_MIB_IPRPFILTER, /* IP Reverse Path Filter (rp_filter) */
LINUX_MIB_TCPTIMEWAITOVERFLOW, /* TCPTimeWaitOverflow */
LINUX_MIB_TCPREQQFULLDOCOOKIES, /* TCPReqQFullDoCookies */
LINUX_MIB_TCPREQQFULLDROP, /* TCPReqQFullDrop */
LINUX_MIB_TCPRETRANSFAIL, /* TCPRetransFail */
LINUX_MIB_TCPRCVCOALESCE, /* TCPRcvCoalesce */
LINUX_MIB_TCPOFOQUEUE, /* TCPOFOQueue */
LINUX_MIB_TCPOFODROP, /* TCPOFODrop */
LINUX_MIB_TCPOFOMERGE, /* TCPOFOMerge */
LINUX_MIB_TCPCHALLENGEACK, /* TCPChallengeACK */
LINUX_MIB_TCPSYNCHALLENGE, /* TCPSYNChallenge */
LINUX_MIB_TCPFASTOPENACTIVE, /* TCPFastOpenActive */
__LINUX_MIB_MAX
};
/* linux Xfrm mib definitions */
enum
{
LINUX_MIB_XFRMNUM = 0,
LINUX_MIB_XFRMINERROR, /* XfrmInError */
LINUX_MIB_XFRMINBUFFERERROR, /* XfrmInBufferError */
LINUX_MIB_XFRMINHDRERROR, /* XfrmInHdrError */
LINUX_MIB_XFRMINNOSTATES, /* XfrmInNoStates */
LINUX_MIB_XFRMINSTATEPROTOERROR, /* XfrmInStateProtoError */
LINUX_MIB_XFRMINSTATEMODEERROR, /* XfrmInStateModeError */
LINUX_MIB_XFRMINSTATESEQERROR, /* XfrmInStateSeqError */
LINUX_MIB_XFRMINSTATEEXPIRED, /* XfrmInStateExpired */
LINUX_MIB_XFRMINSTATEMISMATCH, /* XfrmInStateMismatch */
LINUX_MIB_XFRMINSTATEINVALID, /* XfrmInStateInvalid */
LINUX_MIB_XFRMINTMPLMISMATCH, /* XfrmInTmplMismatch */
LINUX_MIB_XFRMINNOPOLS, /* XfrmInNoPols */
LINUX_MIB_XFRMINPOLBLOCK, /* XfrmInPolBlock */
LINUX_MIB_XFRMINPOLERROR, /* XfrmInPolError */
LINUX_MIB_XFRMOUTERROR, /* XfrmOutError */
LINUX_MIB_XFRMOUTBUNDLEGENERROR, /* XfrmOutBundleGenError */
LINUX_MIB_XFRMOUTBUNDLECHECKERROR, /* XfrmOutBundleCheckError */
LINUX_MIB_XFRMOUTNOSTATES, /* XfrmOutNoStates */
LINUX_MIB_XFRMOUTSTATEPROTOERROR, /* XfrmOutStateProtoError */
LINUX_MIB_XFRMOUTSTATEMODEERROR, /* XfrmOutStateModeError */
LINUX_MIB_XFRMOUTSTATESEQERROR, /* XfrmOutStateSeqError */
LINUX_MIB_XFRMOUTSTATEEXPIRED, /* XfrmOutStateExpired */
LINUX_MIB_XFRMOUTPOLBLOCK, /* XfrmOutPolBlock */
LINUX_MIB_XFRMOUTPOLDEAD, /* XfrmOutPolDead */
LINUX_MIB_XFRMOUTPOLERROR, /* XfrmOutPolError */
LINUX_MIB_XFRMFWDHDRERROR, /* XfrmFwdHdrError*/
__LINUX_MIB_XFRMMAX
};
#endif /* _LINUX_SNMP_H */
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