Merge tag 'dma-mapping-5.15-2' of git://git.infradead.org/users/hch/dma-mapping
[platform/kernel/linux-starfive.git] / net / mptcp / mib.h
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
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
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);