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_ECHOADD, /* Received ADD_ADDR with echo-flag=1 */
31 MPTCP_MIB_PORTADD, /* Received ADD_ADDR with a port-number */
32 MPTCP_MIB_ADDADDRDROP, /* Dropped incoming ADD_ADDR */
33 MPTCP_MIB_JOINPORTSYNRX, /* Received a SYN MP_JOIN with a different port-number */
34 MPTCP_MIB_JOINPORTSYNACKRX, /* Received a SYNACK MP_JOIN with a different port-number */
35 MPTCP_MIB_JOINPORTACKRX, /* Received an ACK MP_JOIN with a different port-number */
36 MPTCP_MIB_MISMATCHPORTSYNRX, /* Received a SYN MP_JOIN with a mismatched port-number */
37 MPTCP_MIB_MISMATCHPORTACKRX, /* Received an ACK MP_JOIN with a mismatched port-number */
38 MPTCP_MIB_RMADDR, /* Received RM_ADDR */
39 MPTCP_MIB_RMADDRDROP, /* Dropped incoming RM_ADDR */
40 MPTCP_MIB_RMSUBFLOW, /* Remove a subflow */
41 MPTCP_MIB_MPPRIOTX, /* Transmit a MP_PRIO */
42 MPTCP_MIB_MPPRIORX, /* Received a MP_PRIO */
43 MPTCP_MIB_MPFAILTX, /* Transmit a MP_FAIL */
44 MPTCP_MIB_MPFAILRX, /* Received a MP_FAIL */
45 MPTCP_MIB_MPFASTCLOSETX, /* Transmit a MP_FASTCLOSE */
46 MPTCP_MIB_MPFASTCLOSERX, /* Received a MP_FASTCLOSE */
47 MPTCP_MIB_MPRSTTX, /* Transmit a MP_RST */
48 MPTCP_MIB_MPRSTRX, /* Received a MP_RST */
49 MPTCP_MIB_RCVPRUNED, /* Incoming packet dropped due to memory limit */
50 MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */
51 MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */
52 MPTCP_MIB_SNDWNDSHARED, /* Subflow snd wnd is overridden by msk's one */
53 MPTCP_MIB_RCVWNDSHARED, /* Subflow rcv wnd is overridden by msk's one */
54 MPTCP_MIB_RCVWNDCONFLICTUPDATE, /* subflow rcv wnd is overridden by msk's one due to
55 * conflict with another subflow while updating msk rcv wnd
56 */
57 MPTCP_MIB_RCVWNDCONFLICT, /* Conflict with while updating msk rcv wnd */
58 __MPTCP_MIB_MAX
59 };
60
61 #define LINUX_MIB_MPTCP_MAX __MPTCP_MIB_MAX
62 struct mptcp_mib {
63 unsigned long mibs[LINUX_MIB_MPTCP_MAX];
64 };
65
MPTCP_INC_STATS(struct net * net,enum linux_mptcp_mib_field field)66 static inline void MPTCP_INC_STATS(struct net *net,
67 enum linux_mptcp_mib_field field)
68 {
69 if (likely(net->mib.mptcp_statistics))
70 SNMP_INC_STATS(net->mib.mptcp_statistics, field);
71 }
72
__MPTCP_INC_STATS(struct net * net,enum linux_mptcp_mib_field field)73 static inline void __MPTCP_INC_STATS(struct net *net,
74 enum linux_mptcp_mib_field field)
75 {
76 if (likely(net->mib.mptcp_statistics))
77 __SNMP_INC_STATS(net->mib.mptcp_statistics, field);
78 }
79
80 bool mptcp_mib_alloc(struct net *net);
81