[linux-2.6-block.git] / net / mptcp / mib.h

/* SPDX-License-Identifier: GPL-2.0-or-later */

enum linux_mptcp_mib_field {
	MPTCP_MIB_NUM = 0,
	MPTCP_MIB_MPCAPABLEPASSIVE,	/* Received SYN with MP_CAPABLE */
	MPTCP_MIB_MPCAPABLEACTIVE,	/* Sent SYN with MP_CAPABLE */
	MPTCP_MIB_MPCAPABLEACTIVEACK,	/* Received SYN/ACK with MP_CAPABLE */
	MPTCP_MIB_MPCAPABLEPASSIVEACK,	/* Received third ACK with MP_CAPABLE */
	MPTCP_MIB_MPCAPABLEPASSIVEFALLBACK,/* Server-side fallback during 3-way handshake */
	MPTCP_MIB_MPCAPABLEACTIVEFALLBACK, /* Client-side fallback during 3-way handshake */
	MPTCP_MIB_TOKENFALLBACKINIT,	/* Could not init/allocate token */
	MPTCP_MIB_RETRANSSEGS,		/* Segments retransmitted at the MPTCP-level */
	MPTCP_MIB_JOINNOTOKEN,		/* Received MP_JOIN but the token was not found */
	MPTCP_MIB_JOINSYNRX,		/* Received a SYN + MP_JOIN */
	MPTCP_MIB_JOINSYNACKRX,		/* Received a SYN/ACK + MP_JOIN */
	MPTCP_MIB_JOINSYNACKMAC,	/* HMAC was wrong on SYN/ACK + MP_JOIN */
	MPTCP_MIB_JOINACKRX,		/* Received an ACK + MP_JOIN */
	MPTCP_MIB_JOINACKMAC,		/* HMAC was wrong on ACK + MP_JOIN */
	MPTCP_MIB_DSSNOMATCH,		/* Received a new mapping that did not match the previous one */
	MPTCP_MIB_INFINITEMAPTX,	/* Sent an infinite mapping */
	MPTCP_MIB_INFINITEMAPRX,	/* Received an infinite mapping */
	MPTCP_MIB_DSSTCPMISMATCH,	/* DSS-mapping did not map with TCP's sequence numbers */
	MPTCP_MIB_DATACSUMERR,		/* The data checksum fail */
	MPTCP_MIB_OFOQUEUETAIL,	/* Segments inserted into OoO queue tail */
	MPTCP_MIB_OFOQUEUE,		/* Segments inserted into OoO queue */
	MPTCP_MIB_OFOMERGE,		/* Segments merged in OoO queue */
	MPTCP_MIB_NODSSWINDOW,		/* Segments not in MPTCP windows */
	MPTCP_MIB_DUPDATA,		/* Segments discarded due to duplicate DSS */
	MPTCP_MIB_ADDADDR,		/* Received ADD_ADDR with echo-flag=0 */
	MPTCP_MIB_ADDADDRTX,		/* Sent ADD_ADDR with echo-flag=0 */
	MPTCP_MIB_ADDADDRTXDROP,	/* ADD_ADDR with echo-flag=0 not send due to
					 * resource exhaustion
					 */
	MPTCP_MIB_ECHOADD,		/* Received ADD_ADDR with echo-flag=1 */
	MPTCP_MIB_ECHOADDTX,		/* Send ADD_ADDR with echo-flag=1 */
	MPTCP_MIB_ECHOADDTXDROP,	/* ADD_ADDR with echo-flag=1 not send due
					 * to resource exhaustion
					 */
	MPTCP_MIB_PORTADD,		/* Received ADD_ADDR with a port-number */
	MPTCP_MIB_ADDADDRDROP,		/* Dropped incoming ADD_ADDR */
	MPTCP_MIB_JOINPORTSYNRX,	/* Received a SYN MP_JOIN with a different port-number */
	MPTCP_MIB_JOINPORTSYNACKRX,	/* Received a SYNACK MP_JOIN with a different port-number */
	MPTCP_MIB_JOINPORTACKRX,	/* Received an ACK MP_JOIN with a different port-number */
	MPTCP_MIB_MISMATCHPORTSYNRX,	/* Received a SYN MP_JOIN with a mismatched port-number */
	MPTCP_MIB_MISMATCHPORTACKRX,	/* Received an ACK MP_JOIN with a mismatched port-number */
	MPTCP_MIB_RMADDR,		/* Received RM_ADDR */
	MPTCP_MIB_RMADDRDROP,		/* Dropped incoming RM_ADDR */
	MPTCP_MIB_RMADDRTX,		/* Sent RM_ADDR */
	MPTCP_MIB_RMADDRTXDROP,		/* RM_ADDR not sent due to resource exhaustion */
	MPTCP_MIB_RMSUBFLOW,		/* Remove a subflow */
	MPTCP_MIB_MPPRIOTX,		/* Transmit a MP_PRIO */
	MPTCP_MIB_MPPRIORX,		/* Received a MP_PRIO */
	MPTCP_MIB_MPFAILTX,		/* Transmit a MP_FAIL */
	MPTCP_MIB_MPFAILRX,		/* Received a MP_FAIL */
	MPTCP_MIB_MPFASTCLOSETX,	/* Transmit a MP_FASTCLOSE */
	MPTCP_MIB_MPFASTCLOSERX,	/* Received a MP_FASTCLOSE */
	MPTCP_MIB_MPRSTTX,		/* Transmit a MP_RST */
	MPTCP_MIB_MPRSTRX,		/* Received a MP_RST */
	MPTCP_MIB_RCVPRUNED,		/* Incoming packet dropped due to memory limit */
	MPTCP_MIB_SUBFLOWSTALE,		/* Subflows entered 'stale' status */
	MPTCP_MIB_SUBFLOWRECOVER,	/* Subflows returned to active status after being stale */
	MPTCP_MIB_SNDWNDSHARED,		/* Subflow snd wnd is overridden by msk's one */
	MPTCP_MIB_RCVWNDSHARED,		/* Subflow rcv wnd is overridden by msk's one */
	MPTCP_MIB_RCVWNDCONFLICTUPDATE,	/* subflow rcv wnd is overridden by msk's one due to
					 * conflict with another subflow while updating msk rcv wnd
					 */
	MPTCP_MIB_RCVWNDCONFLICT,	/* Conflict with while updating msk rcv wnd */
	MPTCP_MIB_CURRESTAB,		/* Current established MPTCP connections */
	__MPTCP_MIB_MAX
};

#define LINUX_MIB_MPTCP_MAX	__MPTCP_MIB_MAX
struct mptcp_mib {
	unsigned long mibs[LINUX_MIB_MPTCP_MAX];
};

static inline void MPTCP_ADD_STATS(struct net *net,
				   enum linux_mptcp_mib_field field,
				   int val)
{
	if (likely(net->mib.mptcp_statistics))
		SNMP_ADD_STATS(net->mib.mptcp_statistics, field, val);
}

static inline void MPTCP_INC_STATS(struct net *net,
				   enum linux_mptcp_mib_field field)
{
	if (likely(net->mib.mptcp_statistics))
		SNMP_INC_STATS(net->mib.mptcp_statistics, field);
}

static inline void __MPTCP_INC_STATS(struct net *net,
				     enum linux_mptcp_mib_field field)
{
	if (likely(net->mib.mptcp_statistics))
		__SNMP_INC_STATS(net->mib.mptcp_statistics, field);
}

static inline void MPTCP_DEC_STATS(struct net *net,
				   enum linux_mptcp_mib_field field)
{
	if (likely(net->mib.mptcp_statistics))
		SNMP_DEC_STATS(net->mib.mptcp_statistics, field);
}

bool mptcp_mib_alloc(struct net *net);
Commit	Line	Data
fc518953 FW	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 */
5695eb88 PA	6	MPTCP_MIB_MPCAPABLEACTIVE, /* Sent SYN with MP_CAPABLE */
5695eb88 PA	7	MPTCP_MIB_MPCAPABLEACTIVEACK, /* Received SYN/ACK with MP_CAPABLE */
fc518953 FW	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 */
a16195e3	11	MPTCP_MIB_TOKENFALLBACKINIT, /* Could not init/allocate token */
fc518953 FW	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 */
104125b8	20	MPTCP_MIB_INFINITEMAPTX, /* Sent an infinite mapping */
fc518953	21	MPTCP_MIB_INFINITEMAPRX, /* Received an infinite mapping */
06285da9	22	MPTCP_MIB_DSSTCPMISMATCH, /* DSS-mapping did not map with TCP's sequence numbers */
fe3ab1cb	23	MPTCP_MIB_DATACSUMERR, /* The data checksum fail */
06242e44 PA	24	MPTCP_MIB_OFOQUEUETAIL, /* Segments inserted into OoO queue tail */
	25	MPTCP_MIB_OFOQUEUE, /* Segments inserted into OoO queue */
	26	MPTCP_MIB_OFOMERGE, /* Segments merged in OoO queue */
	27	MPTCP_MIB_NODSSWINDOW, /* Segments not in MPTCP windows */
	28	MPTCP_MIB_DUPDATA, /* Segments discarded due to duplicate DSS */
a877de06	29	MPTCP_MIB_ADDADDR, /* Received ADD_ADDR with echo-flag=0 */
45b1a122 PA	30	MPTCP_MIB_ADDADDRTX, /* Sent ADD_ADDR with echo-flag=0 */
	31	MPTCP_MIB_ADDADDRTXDROP, /* ADD_ADDR with echo-flag=0 not send due to
	32	* resource exhaustion
	33	*/
a877de06	34	MPTCP_MIB_ECHOADD, /* Received ADD_ADDR with echo-flag=1 */
45b1a122 PA	35	MPTCP_MIB_ECHOADDTX, /* Send ADD_ADDR with echo-flag=1 */
	36	MPTCP_MIB_ECHOADDTXDROP, /* ADD_ADDR with echo-flag=1 not send due
	37	* to resource exhaustion
	38	*/
2fbdd9ea	39	MPTCP_MIB_PORTADD, /* Received ADD_ADDR with a port-number */
f73c1194	40	MPTCP_MIB_ADDADDRDROP, /* Dropped incoming ADD_ADDR */
2fbdd9ea GT	41	MPTCP_MIB_JOINPORTSYNRX, /* Received a SYN MP_JOIN with a different port-number */
	42	MPTCP_MIB_JOINPORTSYNACKRX, /* Received a SYNACK MP_JOIN with a different port-number */
	43	MPTCP_MIB_JOINPORTACKRX, /* Received an ACK MP_JOIN with a different port-number */
	44	MPTCP_MIB_MISMATCHPORTSYNRX, /* Received a SYN MP_JOIN with a mismatched port-number */
	45	MPTCP_MIB_MISMATCHPORTACKRX, /* Received an ACK MP_JOIN with a mismatched port-number */
7a7e52e3	46	MPTCP_MIB_RMADDR, /* Received RM_ADDR */
f73c1194	47	MPTCP_MIB_RMADDRDROP, /* Dropped incoming RM_ADDR */
45b1a122 PA	48	MPTCP_MIB_RMADDRTX, /* Sent RM_ADDR */
45b1a122 PA	49	MPTCP_MIB_RMADDRTXDROP, /* RM_ADDR not sent due to resource exhaustion */
7a7e52e3	50	MPTCP_MIB_RMSUBFLOW, /* Remove a subflow */
0be2ac28 GT	51	MPTCP_MIB_MPPRIOTX, /* Transmit a MP_PRIO */
0be2ac28 GT	52	MPTCP_MIB_MPPRIORX, /* Received a MP_PRIO */
eb7f3365 GT	53	MPTCP_MIB_MPFAILTX, /* Transmit a MP_FAIL */
eb7f3365 GT	54	MPTCP_MIB_MPFAILRX, /* Received a MP_FAIL */
1e75629c GT	55	MPTCP_MIB_MPFASTCLOSETX, /* Transmit a MP_FASTCLOSE */
1e75629c GT	56	MPTCP_MIB_MPFASTCLOSERX, /* Received a MP_FASTCLOSE */
e40dd439 GT	57	MPTCP_MIB_MPRSTTX, /* Transmit a MP_RST */
e40dd439 GT	58	MPTCP_MIB_MPRSTRX, /* Received a MP_RST */
ce599c51	59	MPTCP_MIB_RCVPRUNED, /* Incoming packet dropped due to memory limit */
fc1b4e3b PA	60	MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */
fc1b4e3b PA	61	MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */
92be2f52	62	MPTCP_MIB_SNDWNDSHARED, /* Subflow snd wnd is overridden by msk's one */
38acb626 PA	63	MPTCP_MIB_RCVWNDSHARED, /* Subflow rcv wnd is overridden by msk's one */
	64	MPTCP_MIB_RCVWNDCONFLICTUPDATE, /* subflow rcv wnd is overridden by msk's one due to
	65	* conflict with another subflow while updating msk rcv wnd
	66	*/
	67	MPTCP_MIB_RCVWNDCONFLICT, /* Conflict with while updating msk rcv wnd */
d9cd27b8	68	MPTCP_MIB_CURRESTAB, /* Current established MPTCP connections */
fc518953 FW	69	__MPTCP_MIB_MAX
	70	};
	71
	72	#define LINUX_MIB_MPTCP_MAX __MPTCP_MIB_MAX
	73	struct mptcp_mib {
	74	unsigned long mibs[LINUX_MIB_MPTCP_MAX];
	75	};
	76
45b1a122 PA	77	static inline void MPTCP_ADD_STATS(struct net *net,
	78	enum linux_mptcp_mib_field field,
	79	int val)
	80	{
	81	if (likely(net->mib.mptcp_statistics))
	82	SNMP_ADD_STATS(net->mib.mptcp_statistics, field, val);
	83	}
	84
fc518953 FW	85	static inline void MPTCP_INC_STATS(struct net *net,
	86	enum linux_mptcp_mib_field field)
	87	{
	88	if (likely(net->mib.mptcp_statistics))
	89	SNMP_INC_STATS(net->mib.mptcp_statistics, field);
	90	}
	91
	92	static inline void __MPTCP_INC_STATS(struct net *net,
	93	enum linux_mptcp_mib_field field)
	94	{
	95	if (likely(net->mib.mptcp_statistics))
	96	__SNMP_INC_STATS(net->mib.mptcp_statistics, field);
	97	}
	98
d9cd27b8 GT	99	static inline void MPTCP_DEC_STATS(struct net *net,
	100	enum linux_mptcp_mib_field field)
	101	{
	102	if (likely(net->mib.mptcp_statistics))
	103	SNMP_DEC_STATS(net->mib.mptcp_statistics, field);
	104	}
	105
fc518953	106	bool mptcp_mib_alloc(struct net *net);