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_MPJOINNOIDFOUND, /* Received MP_JOIN but no local ID was found */
20 : : MPTCP_MIB_JOINSYNRX, /* Received a SYN + MP_JOIN */
21 : : MPTCP_MIB_JOINSYNBACKUPRX, /* Received a SYN + MP_JOIN + backup flag */
22 : : MPTCP_MIB_JOINSYNACKRX, /* Received a SYN/ACK + MP_JOIN */
23 : : MPTCP_MIB_JOINSYNACKBACKUPRX, /* Received a SYN/ACK + MP_JOIN + backup flag */
24 : : MPTCP_MIB_JOINSYNACKMAC, /* HMAC was wrong on SYN/ACK + MP_JOIN */
25 : : MPTCP_MIB_MPJOINSYNACKNOMPJOIN, /* MP_RST: missing MP_JOIN in SYN/ACK */
26 : : MPTCP_MIB_JOINACKRX, /* Received an ACK + MP_JOIN */
27 : : MPTCP_MIB_JOINACKMAC, /* HMAC was wrong on ACK + MP_JOIN */
28 : : MPTCP_MIB_MPJOINACKNOMPJOIN, /* MP_RST: missing MP_JOIN in ACK */
29 : : MPTCP_MIB_MPJOINACKNOCTX, /* MP_RST: no subflow context on ACK */
30 : : MPTCP_MIB_JOINREJECTED, /* The PM rejected the JOIN request */
31 : : MPTCP_MIB_MPJOINNOTESTABLISHED, /* MP_RST: JOIN on not-fully-established msk */
32 : : MPTCP_MIB_JOINSYNTX, /* Sending a SYN + MP_JOIN */
33 : : MPTCP_MIB_JOINSYNTXCREATSKERR, /* Not able to create a socket when sending a SYN + MP_JOIN */
34 : : MPTCP_MIB_JOINSYNTXBINDERR, /* Not able to bind() the address when sending a SYN + MP_JOIN */
35 : : MPTCP_MIB_JOINSYNTXCONNECTERR, /* Not able to connect() when sending a SYN + MP_JOIN */
36 : : MPTCP_MIB_DSSNOMATCH, /* Received a new mapping that did not match the previous one */
37 : : MPTCP_MIB_DSSCORRUPTIONFALLBACK,/* DSS corruption detected, fallback */
38 : : MPTCP_MIB_DSSCORRUPTIONRESET, /* DSS corruption detected, MPJ subflow reset */
39 : : MPTCP_MIB_INFINITEMAPTX, /* Sent an infinite mapping */
40 : : MPTCP_MIB_INFINITEMAPRX, /* Received an infinite mapping */
41 : : MPTCP_MIB_DSSTCPMISMATCH, /* DSS-mapping did not map with TCP's sequence numbers */
42 : : MPTCP_MIB_DATACSUMERR, /* The data checksum fail */
43 : : MPTCP_MIB_OFOQUEUETAIL, /* Segments inserted into OoO queue tail */
44 : : MPTCP_MIB_OFOQUEUE, /* Segments inserted into OoO queue */
45 : : MPTCP_MIB_OFOMERGE, /* Segments merged in OoO queue */
46 : : MPTCP_MIB_NODSSWINDOW, /* Segments not in MPTCP windows */
47 : : MPTCP_MIB_DUPDATA, /* Segments discarded due to duplicate DSS */
48 : : MPTCP_MIB_ADDADDR, /* Received ADD_ADDR with echo-flag=0 */
49 : : MPTCP_MIB_ADDADDRTX, /* Sent ADD_ADDR with echo-flag=0 */
50 : : MPTCP_MIB_ADDADDRTXDROP, /* ADD_ADDR with echo-flag=0 not send due to
51 : : * resource exhaustion
52 : : */
53 : : MPTCP_MIB_ECHOADD, /* Received ADD_ADDR with echo-flag=1 */
54 : : MPTCP_MIB_ECHOADDTX, /* Send ADD_ADDR with echo-flag=1 */
55 : : MPTCP_MIB_ECHOADDTXDROP, /* ADD_ADDR with echo-flag=1 not send due
56 : : * to resource exhaustion
57 : : */
58 : : MPTCP_MIB_PORTADD, /* Received ADD_ADDR with a port-number */
59 : : MPTCP_MIB_ADDADDRDROP, /* Dropped incoming ADD_ADDR */
60 : : MPTCP_MIB_JOINPORTSYNRX, /* Received a SYN MP_JOIN with a different port-number */
61 : : MPTCP_MIB_JOINPORTSYNACKRX, /* Received a SYNACK MP_JOIN with a different port-number */
62 : : MPTCP_MIB_JOINPORTACKRX, /* Received an ACK MP_JOIN with a different port-number */
63 : : MPTCP_MIB_MISMATCHPORTSYNRX, /* Received a SYN MP_JOIN with a mismatched port-number */
64 : : MPTCP_MIB_MISMATCHPORTACKRX, /* Received an ACK MP_JOIN with a mismatched port-number */
65 : : MPTCP_MIB_RMADDR, /* Received RM_ADDR */
66 : : MPTCP_MIB_RMADDRDROP, /* Dropped incoming RM_ADDR */
67 : : MPTCP_MIB_RMADDRTX, /* Sent RM_ADDR */
68 : : MPTCP_MIB_RMADDRTXDROP, /* RM_ADDR not sent due to resource exhaustion */
69 : : MPTCP_MIB_RMSUBFLOW, /* Remove a subflow */
70 : : MPTCP_MIB_MPPRIOTX, /* Transmit a MP_PRIO */
71 : : MPTCP_MIB_MPPRIORX, /* Received a MP_PRIO */
72 : : MPTCP_MIB_MPFAILTX, /* Transmit a MP_FAIL */
73 : : MPTCP_MIB_MPFAILRX, /* Received a MP_FAIL */
74 : : MPTCP_MIB_MPFASTCLOSETX, /* Transmit a MP_FASTCLOSE */
75 : : MPTCP_MIB_MPFASTCLOSERX, /* Received a MP_FASTCLOSE */
76 : : MPTCP_MIB_MPRSTTX, /* Transmit a MP_RST */
77 : : MPTCP_MIB_MPRSTRX, /* Received a MP_RST */
78 : : MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */
79 : : MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */
80 : : MPTCP_MIB_SNDWNDSHARED, /* Subflow snd wnd is overridden by msk's one */
81 : : MPTCP_MIB_RCVWNDSHARED, /* Subflow rcv wnd is overridden by msk's one */
82 : : MPTCP_MIB_RCVWNDCONFLICTUPDATE, /* subflow rcv wnd is overridden by msk's one due to
83 : : * conflict with another subflow while updating msk rcv wnd
84 : : */
85 : : MPTCP_MIB_RCVWNDCONFLICT, /* Conflict with while updating msk rcv wnd */
86 : : MPTCP_MIB_CURRESTAB, /* Current established MPTCP connections */
87 : : MPTCP_MIB_BLACKHOLE, /* A blackhole has been detected */
88 : : MPTCP_MIB_MPCAPABLEDATAFALLBACK, /* Missing DSS/MPC+data on first
89 : : * established packet
90 : : */
91 : : MPTCP_MIB_MD5SIGFALLBACK, /* Conflicting TCP option enabled */
92 : : MPTCP_MIB_MD5SIGRESET, /* MP_RST: MD5SIG enabled on listener */
93 : : MPTCP_MIB_DSSFALLBACK, /* Bad or missing DSS */
94 : : MPTCP_MIB_DSSRESET, /* MP_RST: bad data mapping */
95 : : MPTCP_MIB_SIMULTCONNFALLBACK, /* Simultaneous connect */
96 : : MPTCP_MIB_FALLBACKFAILED, /* Can't fallback due to msk status */
97 : : MPTCP_MIB_WINPROBE, /* MPTCP-level zero window probe */
98 : : MPTCP_MIB_BACKLOGDROP, /* Backlog over memory limit */
99 : : MPTCP_MIB_RCVPRUNED, /* Dropped due to memory constraints */
100 : : MPTCP_MIB_OFOPRUNED, /* MPTCP-level OoO queue pruned */
101 : : __MPTCP_MIB_MAX
102 : : };
103 : :
104 : : #define LINUX_MIB_MPTCP_MAX __MPTCP_MIB_MAX
105 : : struct mptcp_mib {
106 : : unsigned long mibs[LINUX_MIB_MPTCP_MAX];
107 : : };
108 : :
109 : 114 : static inline void MPTCP_ADD_STATS(struct net *net,
110 : : enum linux_mptcp_mib_field field,
111 : : int val)
112 : : {
113 [ + - ]: 114 : if (likely(net->mib.mptcp_statistics))
114 [ - + - - : 114 : SNMP_ADD_STATS(net->mib.mptcp_statistics, field, val);
- - - + ]
115 : 114 : }
116 : :
117 : 0 : static inline void MPTCP_INC_STATS(struct net *net,
118 : : enum linux_mptcp_mib_field field)
119 : : {
120 [ + - - - : 819627 : if (likely(net->mib.mptcp_statistics))
+ - - - ]
[ + - ][ + -
- - - + +
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+ - ][ + -
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+ - + - -
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+ - + - -
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+ - - - +
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- - ]
121 [ - + - + : 456944 : SNMP_INC_STATS(net->mib.mptcp_statistics, field);
- + - + -
+ + + + +
+ + ][ + +
+ + + + ]
122 : : }
123 : :
124 : 0 : static inline void __MPTCP_INC_STATS(struct net *net,
125 : : enum linux_mptcp_mib_field field)
126 : : {
127 [ - - - + : 428 : if (likely(net->mib.mptcp_statistics))
+ - + - +
- ]
[ - - + - ]
128 [ + + ]: 226 : __SNMP_INC_STATS(net->mib.mptcp_statistics, field);
129 : : }
130 : :
131 : 66 : static inline void MPTCP_DEC_STATS(struct net *net,
132 : : enum linux_mptcp_mib_field field)
133 : : {
134 [ + - ]: 3288 : if (likely(net->mib.mptcp_statistics))
135 : 3288 : SNMP_DEC_STATS(net->mib.mptcp_statistics, field);
136 : : }
137 : :
138 : : bool mptcp_mib_alloc(struct net *net);
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