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fc518953 FW |
1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | ||
3 | #include <linux/seq_file.h> | |
4 | #include <net/ip.h> | |
5 | #include <net/mptcp.h> | |
6 | #include <net/snmp.h> | |
7 | #include <net/net_namespace.h> | |
8 | ||
9 | #include "mib.h" | |
10 | ||
11 | static const struct snmp_mib mptcp_snmp_list[] = { | |
12 | SNMP_MIB_ITEM("MPCapableSYNRX", MPTCP_MIB_MPCAPABLEPASSIVE), | |
5695eb88 PA |
13 | SNMP_MIB_ITEM("MPCapableSYNTX", MPTCP_MIB_MPCAPABLEACTIVE), |
14 | SNMP_MIB_ITEM("MPCapableSYNACKRX", MPTCP_MIB_MPCAPABLEACTIVEACK), | |
fc518953 FW |
15 | SNMP_MIB_ITEM("MPCapableACKRX", MPTCP_MIB_MPCAPABLEPASSIVEACK), |
16 | SNMP_MIB_ITEM("MPCapableFallbackACK", MPTCP_MIB_MPCAPABLEPASSIVEFALLBACK), | |
17 | SNMP_MIB_ITEM("MPCapableFallbackSYNACK", MPTCP_MIB_MPCAPABLEACTIVEFALLBACK), | |
a16195e3 | 18 | SNMP_MIB_ITEM("MPFallbackTokenInit", MPTCP_MIB_TOKENFALLBACKINIT), |
fc518953 FW |
19 | SNMP_MIB_ITEM("MPTCPRetrans", MPTCP_MIB_RETRANSSEGS), |
20 | SNMP_MIB_ITEM("MPJoinNoTokenFound", MPTCP_MIB_JOINNOTOKEN), | |
21 | SNMP_MIB_ITEM("MPJoinSynRx", MPTCP_MIB_JOINSYNRX), | |
22 | SNMP_MIB_ITEM("MPJoinSynAckRx", MPTCP_MIB_JOINSYNACKRX), | |
23 | SNMP_MIB_ITEM("MPJoinSynAckHMacFailure", MPTCP_MIB_JOINSYNACKMAC), | |
24 | SNMP_MIB_ITEM("MPJoinAckRx", MPTCP_MIB_JOINACKRX), | |
25 | SNMP_MIB_ITEM("MPJoinAckHMacFailure", MPTCP_MIB_JOINACKMAC), | |
26 | SNMP_MIB_ITEM("DSSNotMatching", MPTCP_MIB_DSSNOMATCH), | |
104125b8 | 27 | SNMP_MIB_ITEM("InfiniteMapTx", MPTCP_MIB_INFINITEMAPTX), |
fc518953 | 28 | SNMP_MIB_ITEM("InfiniteMapRx", MPTCP_MIB_INFINITEMAPRX), |
06285da9 | 29 | SNMP_MIB_ITEM("DSSNoMatchTCP", MPTCP_MIB_DSSTCPMISMATCH), |
fe3ab1cb | 30 | SNMP_MIB_ITEM("DataCsumErr", MPTCP_MIB_DATACSUMERR), |
06242e44 PA |
31 | SNMP_MIB_ITEM("OFOQueueTail", MPTCP_MIB_OFOQUEUETAIL), |
32 | SNMP_MIB_ITEM("OFOQueue", MPTCP_MIB_OFOQUEUE), | |
33 | SNMP_MIB_ITEM("OFOMerge", MPTCP_MIB_OFOMERGE), | |
34 | SNMP_MIB_ITEM("NoDSSInWindow", MPTCP_MIB_NODSSWINDOW), | |
35 | SNMP_MIB_ITEM("DuplicateData", MPTCP_MIB_DUPDATA), | |
a877de06 | 36 | SNMP_MIB_ITEM("AddAddr", MPTCP_MIB_ADDADDR), |
45b1a122 PA |
37 | SNMP_MIB_ITEM("AddAddrTx", MPTCP_MIB_ADDADDRTX), |
38 | SNMP_MIB_ITEM("AddAddrTxDrop", MPTCP_MIB_ADDADDRTXDROP), | |
a877de06 | 39 | SNMP_MIB_ITEM("EchoAdd", MPTCP_MIB_ECHOADD), |
45b1a122 PA |
40 | SNMP_MIB_ITEM("EchoAddTx", MPTCP_MIB_ECHOADDTX), |
41 | SNMP_MIB_ITEM("EchoAddTxDrop", MPTCP_MIB_ECHOADDTXDROP), | |
2fbdd9ea | 42 | SNMP_MIB_ITEM("PortAdd", MPTCP_MIB_PORTADD), |
f73c1194 | 43 | SNMP_MIB_ITEM("AddAddrDrop", MPTCP_MIB_ADDADDRDROP), |
2fbdd9ea GT |
44 | SNMP_MIB_ITEM("MPJoinPortSynRx", MPTCP_MIB_JOINPORTSYNRX), |
45 | SNMP_MIB_ITEM("MPJoinPortSynAckRx", MPTCP_MIB_JOINPORTSYNACKRX), | |
46 | SNMP_MIB_ITEM("MPJoinPortAckRx", MPTCP_MIB_JOINPORTACKRX), | |
47 | SNMP_MIB_ITEM("MismatchPortSynRx", MPTCP_MIB_MISMATCHPORTSYNRX), | |
48 | SNMP_MIB_ITEM("MismatchPortAckRx", MPTCP_MIB_MISMATCHPORTACKRX), | |
7a7e52e3 | 49 | SNMP_MIB_ITEM("RmAddr", MPTCP_MIB_RMADDR), |
f73c1194 | 50 | SNMP_MIB_ITEM("RmAddrDrop", MPTCP_MIB_RMADDRDROP), |
45b1a122 PA |
51 | SNMP_MIB_ITEM("RmAddrTx", MPTCP_MIB_RMADDRTX), |
52 | SNMP_MIB_ITEM("RmAddrTxDrop", MPTCP_MIB_RMADDRTXDROP), | |
7a7e52e3 | 53 | SNMP_MIB_ITEM("RmSubflow", MPTCP_MIB_RMSUBFLOW), |
0be2ac28 GT |
54 | SNMP_MIB_ITEM("MPPrioTx", MPTCP_MIB_MPPRIOTX), |
55 | SNMP_MIB_ITEM("MPPrioRx", MPTCP_MIB_MPPRIORX), | |
eb7f3365 GT |
56 | SNMP_MIB_ITEM("MPFailTx", MPTCP_MIB_MPFAILTX), |
57 | SNMP_MIB_ITEM("MPFailRx", MPTCP_MIB_MPFAILRX), | |
1e75629c GT |
58 | SNMP_MIB_ITEM("MPFastcloseTx", MPTCP_MIB_MPFASTCLOSETX), |
59 | SNMP_MIB_ITEM("MPFastcloseRx", MPTCP_MIB_MPFASTCLOSERX), | |
e40dd439 GT |
60 | SNMP_MIB_ITEM("MPRstTx", MPTCP_MIB_MPRSTTX), |
61 | SNMP_MIB_ITEM("MPRstRx", MPTCP_MIB_MPRSTRX), | |
ce599c51 | 62 | SNMP_MIB_ITEM("RcvPruned", MPTCP_MIB_RCVPRUNED), |
fc1b4e3b PA |
63 | SNMP_MIB_ITEM("SubflowStale", MPTCP_MIB_SUBFLOWSTALE), |
64 | SNMP_MIB_ITEM("SubflowRecover", MPTCP_MIB_SUBFLOWRECOVER), | |
92be2f52 | 65 | SNMP_MIB_ITEM("SndWndShared", MPTCP_MIB_SNDWNDSHARED), |
38acb626 PA |
66 | SNMP_MIB_ITEM("RcvWndShared", MPTCP_MIB_RCVWNDSHARED), |
67 | SNMP_MIB_ITEM("RcvWndConflictUpdate", MPTCP_MIB_RCVWNDCONFLICTUPDATE), | |
68 | SNMP_MIB_ITEM("RcvWndConflict", MPTCP_MIB_RCVWNDCONFLICT), | |
d9cd27b8 | 69 | SNMP_MIB_ITEM("MPCurrEstab", MPTCP_MIB_CURRESTAB), |
fc518953 FW |
70 | SNMP_MIB_SENTINEL |
71 | }; | |
72 | ||
73 | /* mptcp_mib_alloc - allocate percpu mib counters | |
74 | * | |
75 | * These are allocated when the first mptcp socket is created so | |
76 | * we do not waste percpu memory if mptcp isn't in use. | |
77 | */ | |
78 | bool mptcp_mib_alloc(struct net *net) | |
79 | { | |
80 | struct mptcp_mib __percpu *mib = alloc_percpu(struct mptcp_mib); | |
81 | ||
82 | if (!mib) | |
83 | return false; | |
84 | ||
85 | if (cmpxchg(&net->mib.mptcp_statistics, NULL, mib)) | |
86 | free_percpu(mib); | |
87 | ||
88 | return true; | |
89 | } | |
90 | ||
91 | void mptcp_seq_show(struct seq_file *seq) | |
92 | { | |
acbd0c81 | 93 | unsigned long sum[ARRAY_SIZE(mptcp_snmp_list) - 1]; |
fc518953 FW |
94 | struct net *net = seq->private; |
95 | int i; | |
96 | ||
97 | seq_puts(seq, "MPTcpExt:"); | |
98 | for (i = 0; mptcp_snmp_list[i].name; i++) | |
99 | seq_printf(seq, " %s", mptcp_snmp_list[i].name); | |
100 | ||
101 | seq_puts(seq, "\nMPTcpExt:"); | |
102 | ||
acbd0c81 ED |
103 | memset(sum, 0, sizeof(sum)); |
104 | if (net->mib.mptcp_statistics) | |
105 | snmp_get_cpu_field_batch(sum, mptcp_snmp_list, | |
106 | net->mib.mptcp_statistics); | |
fc518953 FW |
107 | |
108 | for (i = 0; mptcp_snmp_list[i].name; i++) | |
acbd0c81 ED |
109 | seq_printf(seq, " %lu", sum[i]); |
110 | ||
fc518953 FW |
111 | seq_putc(seq, '\n'); |
112 | } |