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_INFINITEMAPRX, /* Received an infinite mapping */
21 MPTCP_MIB_DSSTCPMISMATCH, /* DSS-mapping did not map with TCP's sequence numbers */
22 MPTCP_MIB_DATACSUMERR, /* The data checksum fail */
23 MPTCP_MIB_OFOQUEUETAIL, /* Segments inserted into OoO queue tail */
24 MPTCP_MIB_OFOQUEUE, /* Segments inserted into OoO queue */
25 MPTCP_MIB_OFOMERGE, /* Segments merged in OoO queue */
26 MPTCP_MIB_NODSSWINDOW, /* Segments not in MPTCP windows */
27 MPTCP_MIB_DUPDATA, /* Segments discarded due to duplicate DSS */
28 MPTCP_MIB_ADDADDR, /* Received ADD_ADDR with echo-flag=0 */
29 MPTCP_MIB_ECHOADD, /* Received ADD_ADDR with echo-flag=1 */
30 MPTCP_MIB_PORTADD, /* Received ADD_ADDR with a port-number */
31 MPTCP_MIB_JOINPORTSYNRX, /* Received a SYN MP_JOIN with a different port-number */
32 MPTCP_MIB_JOINPORTSYNACKRX, /* Received a SYNACK MP_JOIN with a different port-number */
33 MPTCP_MIB_JOINPORTACKRX, /* Received an ACK MP_JOIN with a different port-number */
34 MPTCP_MIB_MISMATCHPORTSYNRX, /* Received a SYN MP_JOIN with a mismatched port-number */
35 MPTCP_MIB_MISMATCHPORTACKRX, /* Received an ACK MP_JOIN with a mismatched port-number */
36 MPTCP_MIB_RMADDR, /* Received RM_ADDR */
37 MPTCP_MIB_RMSUBFLOW, /* Remove a subflow */
38 MPTCP_MIB_MPPRIOTX, /* Transmit a MP_PRIO */
39 MPTCP_MIB_MPPRIORX, /* Received a MP_PRIO */
40 MPTCP_MIB_MPFAILTX, /* Transmit a MP_FAIL */
41 MPTCP_MIB_MPFAILRX, /* Received a MP_FAIL */
42 MPTCP_MIB_RCVPRUNED, /* Incoming packet dropped due to memory limit */
43 MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */
44 MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */
45 __MPTCP_MIB_MAX
46 };
47
48 #define LINUX_MIB_MPTCP_MAX __MPTCP_MIB_MAX
49 struct mptcp_mib {
50 unsigned long mibs[LINUX_MIB_MPTCP_MAX];
51 };
52
MPTCP_INC_STATS(struct net * net,enum linux_mptcp_mib_field field)53 static inline void MPTCP_INC_STATS(struct net *net,
54 enum linux_mptcp_mib_field field)
55 {
56 if (likely(net->mib.mptcp_statistics))
57 SNMP_INC_STATS(net->mib.mptcp_statistics, field);
58 }
59
__MPTCP_INC_STATS(struct net * net,enum linux_mptcp_mib_field field)60 static inline void __MPTCP_INC_STATS(struct net *net,
61 enum linux_mptcp_mib_field field)
62 {
63 if (likely(net->mib.mptcp_statistics))
64 __SNMP_INC_STATS(net->mib.mptcp_statistics, field);
65 }
66
67 bool mptcp_mib_alloc(struct net *net);
68
