1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2
 
 
 3enum 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_RCVPRUNED,		/* Incoming packet dropped due to memory limit */
 
 
 
 
 
 
 
 
 
 
41	__MPTCP_MIB_MAX
42};
43
44#define LINUX_MIB_MPTCP_MAX	__MPTCP_MIB_MAX
45struct mptcp_mib {
46	unsigned long mibs[LINUX_MIB_MPTCP_MAX];
47};
48
 
 
 
 
 
 
 
 
49static inline void MPTCP_INC_STATS(struct net *net,
50				   enum linux_mptcp_mib_field field)
51{
52	if (likely(net->mib.mptcp_statistics))
53		SNMP_INC_STATS(net->mib.mptcp_statistics, field);
54}
55
56static inline void __MPTCP_INC_STATS(struct net *net,
57				     enum linux_mptcp_mib_field field)
58{
59	if (likely(net->mib.mptcp_statistics))
60		__SNMP_INC_STATS(net->mib.mptcp_statistics, field);
 
 
 
 
 
 
 
61}
62
63bool mptcp_mib_alloc(struct net *net);

  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2
  3#include <net/inet_common.h>
  4
  5enum 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_JOINSYNTX,		/* Sending a SYN + MP_JOIN */
 27	MPTCP_MIB_JOINSYNTXCREATSKERR,	/* Not able to create a socket when sending a SYN + MP_JOIN */
 28	MPTCP_MIB_JOINSYNTXBINDERR,	/* Not able to bind() the address when sending a SYN + MP_JOIN */
 29	MPTCP_MIB_JOINSYNTXCONNECTERR,	/* Not able to connect() when sending a SYN + MP_JOIN */
 30	MPTCP_MIB_DSSNOMATCH,		/* Received a new mapping that did not match the previous one */
 31	MPTCP_MIB_DSSCORRUPTIONFALLBACK,/* DSS corruption detected, fallback */
 32	MPTCP_MIB_DSSCORRUPTIONRESET,	/* DSS corruption detected, MPJ subflow reset */
 33	MPTCP_MIB_INFINITEMAPTX,	/* Sent an infinite mapping */
 34	MPTCP_MIB_INFINITEMAPRX,	/* Received an infinite mapping */
 35	MPTCP_MIB_DSSTCPMISMATCH,	/* DSS-mapping did not map with TCP's sequence numbers */
 36	MPTCP_MIB_DATACSUMERR,		/* The data checksum fail */
 37	MPTCP_MIB_OFOQUEUETAIL,	/* Segments inserted into OoO queue tail */
 38	MPTCP_MIB_OFOQUEUE,		/* Segments inserted into OoO queue */
 39	MPTCP_MIB_OFOMERGE,		/* Segments merged in OoO queue */
 40	MPTCP_MIB_NODSSWINDOW,		/* Segments not in MPTCP windows */
 41	MPTCP_MIB_DUPDATA,		/* Segments discarded due to duplicate DSS */
 42	MPTCP_MIB_ADDADDR,		/* Received ADD_ADDR with echo-flag=0 */
 43	MPTCP_MIB_ADDADDRTX,		/* Sent ADD_ADDR with echo-flag=0 */
 44	MPTCP_MIB_ADDADDRTXDROP,	/* ADD_ADDR with echo-flag=0 not send due to
 45					 * resource exhaustion
 46					 */
 47	MPTCP_MIB_ECHOADD,		/* Received ADD_ADDR with echo-flag=1 */
 48	MPTCP_MIB_ECHOADDTX,		/* Send ADD_ADDR with echo-flag=1 */
 49	MPTCP_MIB_ECHOADDTXDROP,	/* ADD_ADDR with echo-flag=1 not send due
 50					 * to resource exhaustion
 51					 */
 52	MPTCP_MIB_PORTADD,		/* Received ADD_ADDR with a port-number */
 53	MPTCP_MIB_ADDADDRDROP,		/* Dropped incoming ADD_ADDR */
 54	MPTCP_MIB_JOINPORTSYNRX,	/* Received a SYN MP_JOIN with a different port-number */
 55	MPTCP_MIB_JOINPORTSYNACKRX,	/* Received a SYNACK MP_JOIN with a different port-number */
 56	MPTCP_MIB_JOINPORTACKRX,	/* Received an ACK MP_JOIN with a different port-number */
 57	MPTCP_MIB_MISMATCHPORTSYNRX,	/* Received a SYN MP_JOIN with a mismatched port-number */
 58	MPTCP_MIB_MISMATCHPORTACKRX,	/* Received an ACK MP_JOIN with a mismatched port-number */
 59	MPTCP_MIB_RMADDR,		/* Received RM_ADDR */
 60	MPTCP_MIB_RMADDRDROP,		/* Dropped incoming RM_ADDR */
 61	MPTCP_MIB_RMADDRTX,		/* Sent RM_ADDR */
 62	MPTCP_MIB_RMADDRTXDROP,		/* RM_ADDR not sent due to resource exhaustion */
 63	MPTCP_MIB_RMSUBFLOW,		/* Remove a subflow */
 64	MPTCP_MIB_MPPRIOTX,		/* Transmit a MP_PRIO */
 65	MPTCP_MIB_MPPRIORX,		/* Received a MP_PRIO */
 66	MPTCP_MIB_MPFAILTX,		/* Transmit a MP_FAIL */
 67	MPTCP_MIB_MPFAILRX,		/* Received a MP_FAIL */
 68	MPTCP_MIB_MPFASTCLOSETX,	/* Transmit a MP_FASTCLOSE */
 69	MPTCP_MIB_MPFASTCLOSERX,	/* Received a MP_FASTCLOSE */
 70	MPTCP_MIB_MPRSTTX,		/* Transmit a MP_RST */
 71	MPTCP_MIB_MPRSTRX,		/* Received a MP_RST */
 72	MPTCP_MIB_RCVPRUNED,		/* Incoming packet dropped due to memory limit */
 73	MPTCP_MIB_SUBFLOWSTALE,		/* Subflows entered 'stale' status */
 74	MPTCP_MIB_SUBFLOWRECOVER,	/* Subflows returned to active status after being stale */
 75	MPTCP_MIB_SNDWNDSHARED,		/* Subflow snd wnd is overridden by msk's one */
 76	MPTCP_MIB_RCVWNDSHARED,		/* Subflow rcv wnd is overridden by msk's one */
 77	MPTCP_MIB_RCVWNDCONFLICTUPDATE,	/* subflow rcv wnd is overridden by msk's one due to
 78					 * conflict with another subflow while updating msk rcv wnd
 79					 */
 80	MPTCP_MIB_RCVWNDCONFLICT,	/* Conflict with while updating msk rcv wnd */
 81	MPTCP_MIB_CURRESTAB,		/* Current established MPTCP connections */
 82	MPTCP_MIB_BLACKHOLE,		/* A blackhole has been detected */
 83	__MPTCP_MIB_MAX
 84};
 85
 86#define LINUX_MIB_MPTCP_MAX	__MPTCP_MIB_MAX
 87struct mptcp_mib {
 88	unsigned long mibs[LINUX_MIB_MPTCP_MAX];
 89};
 90
 91static inline void MPTCP_ADD_STATS(struct net *net,
 92				   enum linux_mptcp_mib_field field,
 93				   int val)
 94{
 95	if (likely(net->mib.mptcp_statistics))
 96		SNMP_ADD_STATS(net->mib.mptcp_statistics, field, val);
 97}
 98
 99static inline void MPTCP_INC_STATS(struct net *net,
100				   enum linux_mptcp_mib_field field)
101{
102	if (likely(net->mib.mptcp_statistics))
103		SNMP_INC_STATS(net->mib.mptcp_statistics, field);
104}
105
106static inline void __MPTCP_INC_STATS(struct net *net,
107				     enum linux_mptcp_mib_field field)
108{
109	if (likely(net->mib.mptcp_statistics))
110		__SNMP_INC_STATS(net->mib.mptcp_statistics, field);
111}
112
113static inline void MPTCP_DEC_STATS(struct net *net,
114				   enum linux_mptcp_mib_field field)
115{
116	if (likely(net->mib.mptcp_statistics))
117		SNMP_DEC_STATS(net->mib.mptcp_statistics, field);
118}
119
120bool mptcp_mib_alloc(struct net *net);