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- // SPDX-License-Identifier: GPL-2.0-or-later
- #include <linux/seq_file.h>
- #include <net/ip.h>
- #include <net/mptcp.h>
- #include <net/snmp.h>
- #include <net/net_namespace.h>
- #include "mib.h"
- static const struct snmp_mib mptcp_snmp_list[] = {
- SNMP_MIB_ITEM("MPCapableSYNRX", MPTCP_MIB_MPCAPABLEPASSIVE),
- SNMP_MIB_ITEM("MPCapableSYNTX", MPTCP_MIB_MPCAPABLEACTIVE),
- SNMP_MIB_ITEM("MPCapableSYNACKRX", MPTCP_MIB_MPCAPABLEACTIVEACK),
- SNMP_MIB_ITEM("MPCapableACKRX", MPTCP_MIB_MPCAPABLEPASSIVEACK),
- SNMP_MIB_ITEM("MPCapableFallbackACK", MPTCP_MIB_MPCAPABLEPASSIVEFALLBACK),
- SNMP_MIB_ITEM("MPCapableFallbackSYNACK", MPTCP_MIB_MPCAPABLEACTIVEFALLBACK),
- SNMP_MIB_ITEM("MPFallbackTokenInit", MPTCP_MIB_TOKENFALLBACKINIT),
- SNMP_MIB_ITEM("MPTCPRetrans", MPTCP_MIB_RETRANSSEGS),
- SNMP_MIB_ITEM("MPJoinNoTokenFound", MPTCP_MIB_JOINNOTOKEN),
- SNMP_MIB_ITEM("MPJoinSynRx", MPTCP_MIB_JOINSYNRX),
- SNMP_MIB_ITEM("MPJoinSynAckRx", MPTCP_MIB_JOINSYNACKRX),
- SNMP_MIB_ITEM("MPJoinSynAckHMacFailure", MPTCP_MIB_JOINSYNACKMAC),
- SNMP_MIB_ITEM("MPJoinAckRx", MPTCP_MIB_JOINACKRX),
- SNMP_MIB_ITEM("MPJoinAckHMacFailure", MPTCP_MIB_JOINACKMAC),
- SNMP_MIB_ITEM("DSSNotMatching", MPTCP_MIB_DSSNOMATCH),
- SNMP_MIB_ITEM("InfiniteMapTx", MPTCP_MIB_INFINITEMAPTX),
- SNMP_MIB_ITEM("InfiniteMapRx", MPTCP_MIB_INFINITEMAPRX),
- SNMP_MIB_ITEM("DSSNoMatchTCP", MPTCP_MIB_DSSTCPMISMATCH),
- SNMP_MIB_ITEM("DataCsumErr", MPTCP_MIB_DATACSUMERR),
- SNMP_MIB_ITEM("OFOQueueTail", MPTCP_MIB_OFOQUEUETAIL),
- SNMP_MIB_ITEM("OFOQueue", MPTCP_MIB_OFOQUEUE),
- SNMP_MIB_ITEM("OFOMerge", MPTCP_MIB_OFOMERGE),
- SNMP_MIB_ITEM("NoDSSInWindow", MPTCP_MIB_NODSSWINDOW),
- SNMP_MIB_ITEM("DuplicateData", MPTCP_MIB_DUPDATA),
- SNMP_MIB_ITEM("AddAddr", MPTCP_MIB_ADDADDR),
- SNMP_MIB_ITEM("EchoAdd", MPTCP_MIB_ECHOADD),
- SNMP_MIB_ITEM("PortAdd", MPTCP_MIB_PORTADD),
- SNMP_MIB_ITEM("AddAddrDrop", MPTCP_MIB_ADDADDRDROP),
- SNMP_MIB_ITEM("MPJoinPortSynRx", MPTCP_MIB_JOINPORTSYNRX),
- SNMP_MIB_ITEM("MPJoinPortSynAckRx", MPTCP_MIB_JOINPORTSYNACKRX),
- SNMP_MIB_ITEM("MPJoinPortAckRx", MPTCP_MIB_JOINPORTACKRX),
- SNMP_MIB_ITEM("MismatchPortSynRx", MPTCP_MIB_MISMATCHPORTSYNRX),
- SNMP_MIB_ITEM("MismatchPortAckRx", MPTCP_MIB_MISMATCHPORTACKRX),
- SNMP_MIB_ITEM("RmAddr", MPTCP_MIB_RMADDR),
- SNMP_MIB_ITEM("RmAddrDrop", MPTCP_MIB_RMADDRDROP),
- SNMP_MIB_ITEM("RmSubflow", MPTCP_MIB_RMSUBFLOW),
- SNMP_MIB_ITEM("MPPrioTx", MPTCP_MIB_MPPRIOTX),
- SNMP_MIB_ITEM("MPPrioRx", MPTCP_MIB_MPPRIORX),
- SNMP_MIB_ITEM("MPFailTx", MPTCP_MIB_MPFAILTX),
- SNMP_MIB_ITEM("MPFailRx", MPTCP_MIB_MPFAILRX),
- SNMP_MIB_ITEM("MPFastcloseTx", MPTCP_MIB_MPFASTCLOSETX),
- SNMP_MIB_ITEM("MPFastcloseRx", MPTCP_MIB_MPFASTCLOSERX),
- SNMP_MIB_ITEM("MPRstTx", MPTCP_MIB_MPRSTTX),
- SNMP_MIB_ITEM("MPRstRx", MPTCP_MIB_MPRSTRX),
- SNMP_MIB_ITEM("RcvPruned", MPTCP_MIB_RCVPRUNED),
- SNMP_MIB_ITEM("SubflowStale", MPTCP_MIB_SUBFLOWSTALE),
- SNMP_MIB_ITEM("SubflowRecover", MPTCP_MIB_SUBFLOWRECOVER),
- SNMP_MIB_ITEM("SndWndShared", MPTCP_MIB_SNDWNDSHARED),
- SNMP_MIB_ITEM("RcvWndShared", MPTCP_MIB_RCVWNDSHARED),
- SNMP_MIB_ITEM("RcvWndConflictUpdate", MPTCP_MIB_RCVWNDCONFLICTUPDATE),
- SNMP_MIB_ITEM("RcvWndConflict", MPTCP_MIB_RCVWNDCONFLICT),
- SNMP_MIB_SENTINEL
- };
- /* mptcp_mib_alloc - allocate percpu mib counters
- *
- * These are allocated when the first mptcp socket is created so
- * we do not waste percpu memory if mptcp isn't in use.
- */
- bool mptcp_mib_alloc(struct net *net)
- {
- struct mptcp_mib __percpu *mib = alloc_percpu(struct mptcp_mib);
- if (!mib)
- return false;
- if (cmpxchg(&net->mib.mptcp_statistics, NULL, mib))
- free_percpu(mib);
- return true;
- }
- void mptcp_seq_show(struct seq_file *seq)
- {
- unsigned long sum[ARRAY_SIZE(mptcp_snmp_list) - 1];
- struct net *net = seq->private;
- int i;
- seq_puts(seq, "MPTcpExt:");
- for (i = 0; mptcp_snmp_list[i].name; i++)
- seq_printf(seq, " %s", mptcp_snmp_list[i].name);
- seq_puts(seq, "\nMPTcpExt:");
- memset(sum, 0, sizeof(sum));
- if (net->mib.mptcp_statistics)
- snmp_get_cpu_field_batch(sum, mptcp_snmp_list,
- net->mib.mptcp_statistics);
- for (i = 0; mptcp_snmp_list[i].name; i++)
- seq_printf(seq, " %lu", sum[i]);
- seq_putc(seq, '\n');
- }
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