1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2
3 #include <net/inet_common.h>
4
5 enum linux_mptcp_mib_field {
6 MPTCP_MIB_NUM = 0,
7 MPTCP_MIB_MPCAPABLEPASSIVE, /* Received SYN with MP_CAPABLE */
8 MPTCP_MIB_MPCAPABLEACTIVE, /* Sent SYN with MP_CAPABLE */
9 MPTCP_MIB_MPCAPABLEACTIVEACK, /* Received SYN/ACK with MP_CAPABLE */
10 MPTCP_MIB_MPCAPABLEPASSIVEACK, /* Received third ACK with MP_CAPABLE */
11 MPTCP_MIB_MPCAPABLEPASSIVEFALLBACK,/* Server-side fallback during 3-way handshake */
12 MPTCP_MIB_MPCAPABLEACTIVEFALLBACK, /* Client-side fallback during 3-way handshake */
13 MPTCP_MIB_MPCAPABLEACTIVEDROP, /* Client-side fallback due to a MPC drop */
14 MPTCP_MIB_MPCAPABLEACTIVEDISABLED, /* Client-side disabled due to past issues */
15 MPTCP_MIB_MPCAPABLEENDPATTEMPT, /* Prohibited MPC to port-based endp */
16 MPTCP_MIB_TOKENFALLBACKINIT, /* Could not init/allocate token */
17 MPTCP_MIB_RETRANSSEGS, /* Segments retransmitted at the MPTCP-level */
18 MPTCP_MIB_JOINNOTOKEN, /* Received MP_JOIN but the token was not found */
19 MPTCP_MIB_JOINSYNRX, /* Received a SYN + MP_JOIN */
20 MPTCP_MIB_JOINSYNBACKUPRX, /* Received a SYN + MP_JOIN + backup flag */
21 MPTCP_MIB_JOINSYNACKRX, /* Received a SYN/ACK + MP_JOIN */
22 MPTCP_MIB_JOINSYNACKBACKUPRX, /* Received a SYN/ACK + MP_JOIN + backup flag */
23 MPTCP_MIB_JOINSYNACKMAC, /* HMAC was wrong on SYN/ACK + MP_JOIN */
24 MPTCP_MIB_JOINACKRX, /* Received an ACK + MP_JOIN */
25 MPTCP_MIB_JOINACKMAC, /* HMAC was wrong on ACK + MP_JOIN */
26 MPTCP_MIB_JOINSYNTX, /* Sending a SYN + MP_JOIN */
27 MPTCP_MIB_JOINSYNTXCREATSKERR, /* Not able to create a socket when sending a SYN + MP_JOIN */
28 MPTCP_MIB_JOINSYNTXBINDERR, /* Not able to bind() the address when sending a SYN + MP_JOIN */
29 MPTCP_MIB_JOINSYNTXCONNECTERR, /* Not able to connect() when sending a SYN + MP_JOIN */
30 MPTCP_MIB_DSSNOMATCH, /* Received a new mapping that did not match the previous one */
31 MPTCP_MIB_DSSCORRUPTIONFALLBACK,/* DSS corruption detected, fallback */
32 MPTCP_MIB_DSSCORRUPTIONRESET, /* DSS corruption detected, MPJ subflow reset */
33 MPTCP_MIB_INFINITEMAPTX, /* Sent an infinite mapping */
34 MPTCP_MIB_INFINITEMAPRX, /* Received an infinite mapping */
35 MPTCP_MIB_DSSTCPMISMATCH, /* DSS-mapping did not map with TCP's sequence numbers */
36 MPTCP_MIB_DATACSUMERR, /* The data checksum fail */
37 MPTCP_MIB_OFOQUEUETAIL, /* Segments inserted into OoO queue tail */
38 MPTCP_MIB_OFOQUEUE, /* Segments inserted into OoO queue */
39 MPTCP_MIB_OFOMERGE, /* Segments merged in OoO queue */
40 MPTCP_MIB_NODSSWINDOW, /* Segments not in MPTCP windows */
41 MPTCP_MIB_DUPDATA, /* Segments discarded due to duplicate DSS */
42 MPTCP_MIB_ADDADDR, /* Received ADD_ADDR with echo-flag=0 */
43 MPTCP_MIB_ADDADDRTX, /* Sent ADD_ADDR with echo-flag=0 */
44 MPTCP_MIB_ADDADDRTXDROP, /* ADD_ADDR with echo-flag=0 not send due to
45 * resource exhaustion
46 */
47 MPTCP_MIB_ECHOADD, /* Received ADD_ADDR with echo-flag=1 */
48 MPTCP_MIB_ECHOADDTX, /* Send ADD_ADDR with echo-flag=1 */
49 MPTCP_MIB_ECHOADDTXDROP, /* ADD_ADDR with echo-flag=1 not send due
50 * to resource exhaustion
51 */
52 MPTCP_MIB_PORTADD, /* Received ADD_ADDR with a port-number */
53 MPTCP_MIB_ADDADDRDROP, /* Dropped incoming ADD_ADDR */
54 MPTCP_MIB_JOINPORTSYNRX, /* Received a SYN MP_JOIN with a different port-number */
55 MPTCP_MIB_JOINPORTSYNACKRX, /* Received a SYNACK MP_JOIN with a different port-number */
56 MPTCP_MIB_JOINPORTACKRX, /* Received an ACK MP_JOIN with a different port-number */
57 MPTCP_MIB_MISMATCHPORTSYNRX, /* Received a SYN MP_JOIN with a mismatched port-number */
58 MPTCP_MIB_MISMATCHPORTACKRX, /* Received an ACK MP_JOIN with a mismatched port-number */
59 MPTCP_MIB_RMADDR, /* Received RM_ADDR */
60 MPTCP_MIB_RMADDRDROP, /* Dropped incoming RM_ADDR */
61 MPTCP_MIB_RMADDRTX, /* Sent RM_ADDR */
62 MPTCP_MIB_RMADDRTXDROP, /* RM_ADDR not sent due to resource exhaustion */
63 MPTCP_MIB_RMSUBFLOW, /* Remove a subflow */
64 MPTCP_MIB_MPPRIOTX, /* Transmit a MP_PRIO */
65 MPTCP_MIB_MPPRIORX, /* Received a MP_PRIO */
66 MPTCP_MIB_MPFAILTX, /* Transmit a MP_FAIL */
67 MPTCP_MIB_MPFAILRX, /* Received a MP_FAIL */
68 MPTCP_MIB_MPFASTCLOSETX, /* Transmit a MP_FASTCLOSE */
69 MPTCP_MIB_MPFASTCLOSERX, /* Received a MP_FASTCLOSE */
70 MPTCP_MIB_MPRSTTX, /* Transmit a MP_RST */
71 MPTCP_MIB_MPRSTRX, /* Received a MP_RST */
72 MPTCP_MIB_RCVPRUNED, /* Incoming packet dropped due to memory limit */
73 MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */
74 MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */
75 MPTCP_MIB_SNDWNDSHARED, /* Subflow snd wnd is overridden by msk's one */
76 MPTCP_MIB_RCVWNDSHARED, /* Subflow rcv wnd is overridden by msk's one */
77 MPTCP_MIB_RCVWNDCONFLICTUPDATE, /* subflow rcv wnd is overridden by msk's one due to
78 * conflict with another subflow while updating msk rcv wnd
79 */
80 MPTCP_MIB_RCVWNDCONFLICT, /* Conflict with while updating msk rcv wnd */
81 MPTCP_MIB_CURRESTAB, /* Current established MPTCP connections */
82 MPTCP_MIB_BLACKHOLE, /* A blackhole has been detected */
83 __MPTCP_MIB_MAX
84 };
85
86 #define LINUX_MIB_MPTCP_MAX __MPTCP_MIB_MAX
87 struct mptcp_mib {
88 unsigned long mibs[LINUX_MIB_MPTCP_MAX];
89 };
90
91 static inline void MPTCP_ADD_STATS(struct net *net,
92 enum linux_mptcp_mib_field field,
93 int val)
94 {
95 if (likely(net->mib.mptcp_statistics))
96 SNMP_ADD_STATS(net->mib.mptcp_statistics, field, val);
97 }
98
99 static inline void MPTCP_INC_STATS(struct net *net,
100 enum linux_mptcp_mib_field field)
101 {
102 if (likely(net->mib.mptcp_statistics))
103 SNMP_INC_STATS(net->mib.mptcp_statistics, field);
104 }
105
106 static inline void __MPTCP_INC_STATS(struct net *net,
107 enum linux_mptcp_mib_field field)
108 {
109 if (likely(net->mib.mptcp_statistics))
110 __SNMP_INC_STATS(net->mib.mptcp_statistics, field);
111 }
112
113 static inline void MPTCP_DEC_STATS(struct net *net,
114 enum linux_mptcp_mib_field field)
115 {
116 if (likely(net->mib.mptcp_statistics))
117 SNMP_DEC_STATS(net->mib.mptcp_statistics, field);
118 }
119
120 bool mptcp_mib_alloc(struct net *net);
121
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