diff options
Diffstat (limited to 'net/mptcp/mib.c')
| -rw-r--r-- | net/mptcp/mib.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/net/mptcp/mib.c b/net/mptcp/mib.c new file mode 100644 index 000000000..0dac2863c --- /dev/null +++ b/net/mptcp/mib.c @@ -0,0 +1,105 @@ +// 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'); +} |