1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | |
3 | enum linux_mptcp_mib_field { |
4 | MPTCP_MIB_NUM = 0, |
5 | MPTCP_MIB_MPCAPABLEPASSIVE, /* Received SYN with MP_CAPABLE */ |
6 | MPTCP_MIB_MPCAPABLEACTIVE, /* Sent SYN with MP_CAPABLE */ |
7 | MPTCP_MIB_MPCAPABLEACTIVEACK, /* Received SYN/ACK with MP_CAPABLE */ |
8 | MPTCP_MIB_MPCAPABLEPASSIVEACK, /* Received third ACK with MP_CAPABLE */ |
9 | MPTCP_MIB_MPCAPABLEPASSIVEFALLBACK,/* Server-side fallback during 3-way handshake */ |
10 | MPTCP_MIB_MPCAPABLEACTIVEFALLBACK, /* Client-side fallback during 3-way handshake */ |
11 | MPTCP_MIB_TOKENFALLBACKINIT, /* Could not init/allocate token */ |
12 | MPTCP_MIB_RETRANSSEGS, /* Segments retransmitted at the MPTCP-level */ |
13 | MPTCP_MIB_JOINNOTOKEN, /* Received MP_JOIN but the token was not found */ |
14 | MPTCP_MIB_JOINSYNRX, /* Received a SYN + MP_JOIN */ |
15 | MPTCP_MIB_JOINSYNACKRX, /* Received a SYN/ACK + MP_JOIN */ |
16 | MPTCP_MIB_JOINSYNACKMAC, /* HMAC was wrong on SYN/ACK + MP_JOIN */ |
17 | MPTCP_MIB_JOINACKRX, /* Received an ACK + MP_JOIN */ |
18 | MPTCP_MIB_JOINACKMAC, /* HMAC was wrong on ACK + MP_JOIN */ |
19 | MPTCP_MIB_DSSNOMATCH, /* Received a new mapping that did not match the previous one */ |
20 | MPTCP_MIB_INFINITEMAPTX, /* Sent an infinite mapping */ |
21 | MPTCP_MIB_INFINITEMAPRX, /* Received an infinite mapping */ |
22 | MPTCP_MIB_DSSTCPMISMATCH, /* DSS-mapping did not map with TCP's sequence numbers */ |
23 | MPTCP_MIB_DATACSUMERR, /* The data checksum fail */ |
24 | MPTCP_MIB_OFOQUEUETAIL, /* Segments inserted into OoO queue tail */ |
25 | MPTCP_MIB_OFOQUEUE, /* Segments inserted into OoO queue */ |
26 | MPTCP_MIB_OFOMERGE, /* Segments merged in OoO queue */ |
27 | MPTCP_MIB_NODSSWINDOW, /* Segments not in MPTCP windows */ |
28 | MPTCP_MIB_DUPDATA, /* Segments discarded due to duplicate DSS */ |
29 | MPTCP_MIB_ADDADDR, /* Received ADD_ADDR with echo-flag=0 */ |
30 | MPTCP_MIB_ADDADDRTX, /* Sent ADD_ADDR with echo-flag=0 */ |
31 | MPTCP_MIB_ADDADDRTXDROP, /* ADD_ADDR with echo-flag=0 not send due to |
32 | * resource exhaustion |
33 | */ |
34 | MPTCP_MIB_ECHOADD, /* Received ADD_ADDR with echo-flag=1 */ |
35 | MPTCP_MIB_ECHOADDTX, /* Send ADD_ADDR with echo-flag=1 */ |
36 | MPTCP_MIB_ECHOADDTXDROP, /* ADD_ADDR with echo-flag=1 not send due |
37 | * to resource exhaustion |
38 | */ |
39 | MPTCP_MIB_PORTADD, /* Received ADD_ADDR with a port-number */ |
40 | MPTCP_MIB_ADDADDRDROP, /* Dropped incoming ADD_ADDR */ |
41 | MPTCP_MIB_JOINPORTSYNRX, /* Received a SYN MP_JOIN with a different port-number */ |
42 | MPTCP_MIB_JOINPORTSYNACKRX, /* Received a SYNACK MP_JOIN with a different port-number */ |
43 | MPTCP_MIB_JOINPORTACKRX, /* Received an ACK MP_JOIN with a different port-number */ |
44 | MPTCP_MIB_MISMATCHPORTSYNRX, /* Received a SYN MP_JOIN with a mismatched port-number */ |
45 | MPTCP_MIB_MISMATCHPORTACKRX, /* Received an ACK MP_JOIN with a mismatched port-number */ |
46 | MPTCP_MIB_RMADDR, /* Received RM_ADDR */ |
47 | MPTCP_MIB_RMADDRDROP, /* Dropped incoming RM_ADDR */ |
48 | MPTCP_MIB_RMADDRTX, /* Sent RM_ADDR */ |
49 | MPTCP_MIB_RMADDRTXDROP, /* RM_ADDR not sent due to resource exhaustion */ |
50 | MPTCP_MIB_RMSUBFLOW, /* Remove a subflow */ |
51 | MPTCP_MIB_MPPRIOTX, /* Transmit a MP_PRIO */ |
52 | MPTCP_MIB_MPPRIORX, /* Received a MP_PRIO */ |
53 | MPTCP_MIB_MPFAILTX, /* Transmit a MP_FAIL */ |
54 | MPTCP_MIB_MPFAILRX, /* Received a MP_FAIL */ |
55 | MPTCP_MIB_MPFASTCLOSETX, /* Transmit a MP_FASTCLOSE */ |
56 | MPTCP_MIB_MPFASTCLOSERX, /* Received a MP_FASTCLOSE */ |
57 | MPTCP_MIB_MPRSTTX, /* Transmit a MP_RST */ |
58 | MPTCP_MIB_MPRSTRX, /* Received a MP_RST */ |
59 | MPTCP_MIB_RCVPRUNED, /* Incoming packet dropped due to memory limit */ |
60 | MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */ |
61 | MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */ |
62 | MPTCP_MIB_SNDWNDSHARED, /* Subflow snd wnd is overridden by msk's one */ |
63 | MPTCP_MIB_RCVWNDSHARED, /* Subflow rcv wnd is overridden by msk's one */ |
64 | MPTCP_MIB_RCVWNDCONFLICTUPDATE, /* subflow rcv wnd is overridden by msk's one due to |
65 | * conflict with another subflow while updating msk rcv wnd |
66 | */ |
67 | MPTCP_MIB_RCVWNDCONFLICT, /* Conflict with while updating msk rcv wnd */ |
68 | __MPTCP_MIB_MAX |
69 | }; |
70 | |
71 | #define LINUX_MIB_MPTCP_MAX __MPTCP_MIB_MAX |
72 | struct mptcp_mib { |
73 | unsigned long mibs[LINUX_MIB_MPTCP_MAX]; |
74 | }; |
75 | |
76 | static inline void MPTCP_ADD_STATS(struct net *net, |
77 | enum linux_mptcp_mib_field field, |
78 | int val) |
79 | { |
80 | if (likely(net->mib.mptcp_statistics)) |
81 | SNMP_ADD_STATS(net->mib.mptcp_statistics, field, val); |
82 | } |
83 | |
84 | static inline void MPTCP_INC_STATS(struct net *net, |
85 | enum linux_mptcp_mib_field field) |
86 | { |
87 | if (likely(net->mib.mptcp_statistics)) |
88 | SNMP_INC_STATS(net->mib.mptcp_statistics, field); |
89 | } |
90 | |
91 | static inline void __MPTCP_INC_STATS(struct net *net, |
92 | enum linux_mptcp_mib_field field) |
93 | { |
94 | if (likely(net->mib.mptcp_statistics)) |
95 | __SNMP_INC_STATS(net->mib.mptcp_statistics, field); |
96 | } |
97 | |
98 | bool mptcp_mib_alloc(struct net *net); |
99 | |