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_TOKENFALLBACKINIT, /* Could not init/allocate token */
14 MPTCP_MIB_RETRANSSEGS, /* Segments retransmitted at the MPTCP-level */
15 MPTCP_MIB_JOINNOTOKEN, /* Received MP_JOIN but the token was not found */
16 MPTCP_MIB_JOINSYNRX, /* Received a SYN + MP_JOIN */
17 MPTCP_MIB_JOINSYNACKRX, /* Received a SYN/ACK + MP_JOIN */
18 MPTCP_MIB_JOINSYNACKMAC, /* HMAC was wrong on SYN/ACK + MP_JOIN */
19 MPTCP_MIB_JOINACKRX, /* Received an ACK + MP_JOIN */
20 MPTCP_MIB_JOINACKMAC, /* HMAC was wrong on ACK + MP_JOIN */
21 MPTCP_MIB_DSSNOMATCH, /* Received a new mapping that did not match the previous one */
22 MPTCP_MIB_INFINITEMAPTX, /* Sent an infinite mapping */
23 MPTCP_MIB_INFINITEMAPRX, /* Received an infinite mapping */
24 MPTCP_MIB_DSSTCPMISMATCH, /* DSS-mapping did not map with TCP's sequence numbers */
25 MPTCP_MIB_DATACSUMERR, /* The data checksum fail */
26 MPTCP_MIB_OFOQUEUETAIL, /* Segments inserted into OoO queue tail */
27 MPTCP_MIB_OFOQUEUE, /* Segments inserted into OoO queue */
28 MPTCP_MIB_OFOMERGE, /* Segments merged in OoO queue */
29 MPTCP_MIB_NODSSWINDOW, /* Segments not in MPTCP windows */
30 MPTCP_MIB_DUPDATA, /* Segments discarded due to duplicate DSS */
31 MPTCP_MIB_ADDADDR, /* Received ADD_ADDR with echo-flag=0 */
32 MPTCP_MIB_ADDADDRTX, /* Sent ADD_ADDR with echo-flag=0 */
33 MPTCP_MIB_ADDADDRTXDROP, /* ADD_ADDR with echo-flag=0 not send due to
34 * resource exhaustion
35 */
36 MPTCP_MIB_ECHOADD, /* Received ADD_ADDR with echo-flag=1 */
37 MPTCP_MIB_ECHOADDTX, /* Send ADD_ADDR with echo-flag=1 */
38 MPTCP_MIB_ECHOADDTXDROP, /* ADD_ADDR with echo-flag=1 not send due
39 * to resource exhaustion
40 */
41 MPTCP_MIB_PORTADD, /* Received ADD_ADDR with a port-number */
42 MPTCP_MIB_ADDADDRDROP, /* Dropped incoming ADD_ADDR */
43 MPTCP_MIB_JOINPORTSYNRX, /* Received a SYN MP_JOIN with a different port-number */
44 MPTCP_MIB_JOINPORTSYNACKRX, /* Received a SYNACK MP_JOIN with a different port-number */
45 MPTCP_MIB_JOINPORTACKRX, /* Received an ACK MP_JOIN with a different port-number */
46 MPTCP_MIB_MISMATCHPORTSYNRX, /* Received a SYN MP_JOIN with a mismatched port-number */
47 MPTCP_MIB_MISMATCHPORTACKRX, /* Received an ACK MP_JOIN with a mismatched port-number */
48 MPTCP_MIB_RMADDR, /* Received RM_ADDR */
49 MPTCP_MIB_RMADDRDROP, /* Dropped incoming RM_ADDR */
50 MPTCP_MIB_RMADDRTX, /* Sent RM_ADDR */
51 MPTCP_MIB_RMADDRTXDROP, /* RM_ADDR not sent due to resource exhaustion */
52 MPTCP_MIB_RMSUBFLOW, /* Remove a subflow */
53 MPTCP_MIB_MPPRIOTX, /* Transmit a MP_PRIO */
54 MPTCP_MIB_MPPRIORX, /* Received a MP_PRIO */
55 MPTCP_MIB_MPFAILTX, /* Transmit a MP_FAIL */
56 MPTCP_MIB_MPFAILRX, /* Received a MP_FAIL */
57 MPTCP_MIB_MPFASTCLOSETX, /* Transmit a MP_FASTCLOSE */
58 MPTCP_MIB_MPFASTCLOSERX, /* Received a MP_FASTCLOSE */
59 MPTCP_MIB_MPRSTTX, /* Transmit a MP_RST */
60 MPTCP_MIB_MPRSTRX, /* Received a MP_RST */
61 MPTCP_MIB_RCVPRUNED, /* Incoming packet dropped due to memory limit */
62 MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */
63 MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */
64 MPTCP_MIB_SNDWNDSHARED, /* Subflow snd wnd is overridden by msk's one */
65 MPTCP_MIB_RCVWNDSHARED, /* Subflow rcv wnd is overridden by msk's one */
66 MPTCP_MIB_RCVWNDCONFLICTUPDATE, /* subflow rcv wnd is overridden by msk's one due to
67 * conflict with another subflow while updating msk rcv wnd
68 */
69 MPTCP_MIB_RCVWNDCONFLICT, /* Conflict with while updating msk rcv wnd */
70 MPTCP_MIB_CURRESTAB, /* Current established MPTCP connections */
71 __MPTCP_MIB_MAX
72 };
73
74 #define LINUX_MIB_MPTCP_MAX __MPTCP_MIB_MAX
75 struct mptcp_mib {
76 unsigned long mibs[LINUX_MIB_MPTCP_MAX];
77 };
78
MPTCP_ADD_STATS(struct net * net,enum linux_mptcp_mib_field field,int val)79 static inline void MPTCP_ADD_STATS(struct net *net,
80 enum linux_mptcp_mib_field field,
81 int val)
82 {
83 if (likely(net->mib.mptcp_statistics))
84 SNMP_ADD_STATS(net->mib.mptcp_statistics, field, val);
85 }
86
MPTCP_INC_STATS(struct net * net,enum linux_mptcp_mib_field field)87 static inline void MPTCP_INC_STATS(struct net *net,
88 enum linux_mptcp_mib_field field)
89 {
90 if (likely(net->mib.mptcp_statistics))
91 SNMP_INC_STATS(net->mib.mptcp_statistics, field);
92 }
93
__MPTCP_INC_STATS(struct net * net,enum linux_mptcp_mib_field field)94 static inline void __MPTCP_INC_STATS(struct net *net,
95 enum linux_mptcp_mib_field field)
96 {
97 if (likely(net->mib.mptcp_statistics))
98 __SNMP_INC_STATS(net->mib.mptcp_statistics, field);
99 }
100
MPTCP_DEC_STATS(struct net * net,enum linux_mptcp_mib_field field)101 static inline void MPTCP_DEC_STATS(struct net *net,
102 enum linux_mptcp_mib_field field)
103 {
104 if (likely(net->mib.mptcp_statistics))
105 SNMP_DEC_STATS(net->mib.mptcp_statistics, field);
106 }
107
108 bool mptcp_mib_alloc(struct net *net);
109