Branch data Line data Source code
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_JOINREJECTED, /* The PM rejected the JOIN request */
27 : : MPTCP_MIB_JOINSYNTX, /* Sending a SYN + MP_JOIN */
28 : : MPTCP_MIB_JOINSYNTXCREATSKERR, /* Not able to create a socket when sending a SYN + MP_JOIN */
29 : : MPTCP_MIB_JOINSYNTXBINDERR, /* Not able to bind() the address when sending a SYN + MP_JOIN */
30 : : MPTCP_MIB_JOINSYNTXCONNECTERR, /* Not able to connect() when sending a SYN + MP_JOIN */
31 : : MPTCP_MIB_DSSNOMATCH, /* Received a new mapping that did not match the previous one */
32 : : MPTCP_MIB_DSSCORRUPTIONFALLBACK,/* DSS corruption detected, fallback */
33 : : MPTCP_MIB_DSSCORRUPTIONRESET, /* DSS corruption detected, MPJ subflow reset */
34 : : MPTCP_MIB_INFINITEMAPTX, /* Sent an infinite mapping */
35 : : MPTCP_MIB_INFINITEMAPRX, /* Received an infinite mapping */
36 : : MPTCP_MIB_DSSTCPMISMATCH, /* DSS-mapping did not map with TCP's sequence numbers */
37 : : MPTCP_MIB_DATACSUMERR, /* The data checksum fail */
38 : : MPTCP_MIB_OFOQUEUETAIL, /* Segments inserted into OoO queue tail */
39 : : MPTCP_MIB_OFOQUEUE, /* Segments inserted into OoO queue */
40 : : MPTCP_MIB_OFOMERGE, /* Segments merged in OoO queue */
41 : : MPTCP_MIB_NODSSWINDOW, /* Segments not in MPTCP windows */
42 : : MPTCP_MIB_DUPDATA, /* Segments discarded due to duplicate DSS */
43 : : MPTCP_MIB_ADDADDR, /* Received ADD_ADDR with echo-flag=0 */
44 : : MPTCP_MIB_ADDADDRTX, /* Sent ADD_ADDR with echo-flag=0 */
45 : : MPTCP_MIB_ADDADDRTXDROP, /* ADD_ADDR with echo-flag=0 not send due to
46 : : * resource exhaustion
47 : : */
48 : : MPTCP_MIB_ECHOADD, /* Received ADD_ADDR with echo-flag=1 */
49 : : MPTCP_MIB_ECHOADDTX, /* Send ADD_ADDR with echo-flag=1 */
50 : : MPTCP_MIB_ECHOADDTXDROP, /* ADD_ADDR with echo-flag=1 not send due
51 : : * to resource exhaustion
52 : : */
53 : : MPTCP_MIB_PORTADD, /* Received ADD_ADDR with a port-number */
54 : : MPTCP_MIB_ADDADDRDROP, /* Dropped incoming ADD_ADDR */
55 : : MPTCP_MIB_JOINPORTSYNRX, /* Received a SYN MP_JOIN with a different port-number */
56 : : MPTCP_MIB_JOINPORTSYNACKRX, /* Received a SYNACK MP_JOIN with a different port-number */
57 : : MPTCP_MIB_JOINPORTACKRX, /* Received an ACK MP_JOIN with a different port-number */
58 : : MPTCP_MIB_MISMATCHPORTSYNRX, /* Received a SYN MP_JOIN with a mismatched port-number */
59 : : MPTCP_MIB_MISMATCHPORTACKRX, /* Received an ACK MP_JOIN with a mismatched port-number */
60 : : MPTCP_MIB_RMADDR, /* Received RM_ADDR */
61 : : MPTCP_MIB_RMADDRDROP, /* Dropped incoming RM_ADDR */
62 : : MPTCP_MIB_RMADDRTX, /* Sent RM_ADDR */
63 : : MPTCP_MIB_RMADDRTXDROP, /* RM_ADDR not sent due to resource exhaustion */
64 : : MPTCP_MIB_RMSUBFLOW, /* Remove a subflow */
65 : : MPTCP_MIB_MPPRIOTX, /* Transmit a MP_PRIO */
66 : : MPTCP_MIB_MPPRIORX, /* Received a MP_PRIO */
67 : : MPTCP_MIB_MPFAILTX, /* Transmit a MP_FAIL */
68 : : MPTCP_MIB_MPFAILRX, /* Received a MP_FAIL */
69 : : MPTCP_MIB_MPFASTCLOSETX, /* Transmit a MP_FASTCLOSE */
70 : : MPTCP_MIB_MPFASTCLOSERX, /* Received a MP_FASTCLOSE */
71 : : MPTCP_MIB_MPRSTTX, /* Transmit a MP_RST */
72 : : MPTCP_MIB_MPRSTRX, /* Received a MP_RST */
73 : : MPTCP_MIB_RCVPRUNED, /* Incoming packet dropped due to memory limit */
74 : : MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */
75 : : MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */
76 : : MPTCP_MIB_SNDWNDSHARED, /* Subflow snd wnd is overridden by msk's one */
77 : : MPTCP_MIB_RCVWNDSHARED, /* Subflow rcv wnd is overridden by msk's one */
78 : : MPTCP_MIB_RCVWNDCONFLICTUPDATE, /* subflow rcv wnd is overridden by msk's one due to
79 : : * conflict with another subflow while updating msk rcv wnd
80 : : */
81 : : MPTCP_MIB_RCVWNDCONFLICT, /* Conflict with while updating msk rcv wnd */
82 : : MPTCP_MIB_CURRESTAB, /* Current established MPTCP connections */
83 : : MPTCP_MIB_BLACKHOLE, /* A blackhole has been detected */
84 : : __MPTCP_MIB_MAX
85 : : };
86 : :
87 : : #define LINUX_MIB_MPTCP_MAX __MPTCP_MIB_MAX
88 : : struct mptcp_mib {
89 : : unsigned long mibs[LINUX_MIB_MPTCP_MAX];
90 : : };
91 : :
92 : 106 : static inline void MPTCP_ADD_STATS(struct net *net,
93 : : enum linux_mptcp_mib_field field,
94 : : int val)
95 : : {
96 [ + - ]: 106 : if (likely(net->mib.mptcp_statistics))
97 [ - + - - : 106 : SNMP_ADD_STATS(net->mib.mptcp_statistics, field, val);
- - - + ]
98 : 106 : }
99 : :
100 : 0 : static inline void MPTCP_INC_STATS(struct net *net,
101 : : enum linux_mptcp_mib_field field)
102 : : {
103 [ + - + - ]: 306081 : if (likely(net->mib.mptcp_statistics))
[ + - + -
+ - + - +
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- ][ + - +
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[ + - + -
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104 [ - + ][ - + : 245957 : SNMP_INC_STATS(net->mib.mptcp_statistics, field);
- + - + -
+ + + + +
+ + ][ - +
+ + + + ]
105 : : }
106 : :
107 : 0 : static inline void __MPTCP_INC_STATS(struct net *net,
108 : : enum linux_mptcp_mib_field field)
109 : : {
110 [ - - - + : 212 : if (likely(net->mib.mptcp_statistics))
+ - + - +
- ]
111 [ + + ]: 212 : __SNMP_INC_STATS(net->mib.mptcp_statistics, field);
112 : : }
113 : :
114 : 126 : static inline void MPTCP_DEC_STATS(struct net *net,
115 : : enum linux_mptcp_mib_field field)
116 : : {
117 [ + - ]: 2388 : if (likely(net->mib.mptcp_statistics))
118 : 2388 : SNMP_DEC_STATS(net->mib.mptcp_statistics, field);
119 : : }
120 : :
121 : : bool mptcp_mib_alloc(struct net *net);
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