xref: /OK3568_Linux_fs/kernel/net/mptcp/mib.h (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun 
3*4882a593Smuzhiyun enum linux_mptcp_mib_field {
4*4882a593Smuzhiyun 	MPTCP_MIB_NUM = 0,
5*4882a593Smuzhiyun 	MPTCP_MIB_MPCAPABLEPASSIVE,	/* Received SYN with MP_CAPABLE */
6*4882a593Smuzhiyun 	MPTCP_MIB_MPCAPABLEPASSIVEACK,	/* Received third ACK with MP_CAPABLE */
7*4882a593Smuzhiyun 	MPTCP_MIB_MPCAPABLEPASSIVEFALLBACK,/* Server-side fallback during 3-way handshake */
8*4882a593Smuzhiyun 	MPTCP_MIB_MPCAPABLEACTIVEFALLBACK, /* Client-side fallback during 3-way handshake */
9*4882a593Smuzhiyun 	MPTCP_MIB_RETRANSSEGS,		/* Segments retransmitted at the MPTCP-level */
10*4882a593Smuzhiyun 	MPTCP_MIB_JOINNOTOKEN,		/* Received MP_JOIN but the token was not found */
11*4882a593Smuzhiyun 	MPTCP_MIB_JOINSYNRX,		/* Received a SYN + MP_JOIN */
12*4882a593Smuzhiyun 	MPTCP_MIB_JOINSYNACKRX,		/* Received a SYN/ACK + MP_JOIN */
13*4882a593Smuzhiyun 	MPTCP_MIB_JOINSYNACKMAC,	/* HMAC was wrong on SYN/ACK + MP_JOIN */
14*4882a593Smuzhiyun 	MPTCP_MIB_JOINACKRX,		/* Received an ACK + MP_JOIN */
15*4882a593Smuzhiyun 	MPTCP_MIB_JOINACKMAC,		/* HMAC was wrong on ACK + MP_JOIN */
16*4882a593Smuzhiyun 	MPTCP_MIB_DSSNOMATCH,		/* Received a new mapping that did not match the previous one */
17*4882a593Smuzhiyun 	MPTCP_MIB_INFINITEMAPRX,	/* Received an infinite mapping */
18*4882a593Smuzhiyun 	MPTCP_MIB_OFOQUEUETAIL,	/* Segments inserted into OoO queue tail */
19*4882a593Smuzhiyun 	MPTCP_MIB_OFOQUEUE,		/* Segments inserted into OoO queue */
20*4882a593Smuzhiyun 	MPTCP_MIB_OFOMERGE,		/* Segments merged in OoO queue */
21*4882a593Smuzhiyun 	MPTCP_MIB_NODSSWINDOW,		/* Segments not in MPTCP windows */
22*4882a593Smuzhiyun 	MPTCP_MIB_DUPDATA,		/* Segments discarded due to duplicate DSS */
23*4882a593Smuzhiyun 	MPTCP_MIB_ADDADDR,		/* Received ADD_ADDR with echo-flag=0 */
24*4882a593Smuzhiyun 	MPTCP_MIB_ECHOADD,		/* Received ADD_ADDR with echo-flag=1 */
25*4882a593Smuzhiyun 	MPTCP_MIB_RMADDR,		/* Received RM_ADDR */
26*4882a593Smuzhiyun 	MPTCP_MIB_RMSUBFLOW,		/* Remove a subflow */
27*4882a593Smuzhiyun 	__MPTCP_MIB_MAX
28*4882a593Smuzhiyun };
29*4882a593Smuzhiyun 
30*4882a593Smuzhiyun #define LINUX_MIB_MPTCP_MAX	__MPTCP_MIB_MAX
31*4882a593Smuzhiyun struct mptcp_mib {
32*4882a593Smuzhiyun 	unsigned long mibs[LINUX_MIB_MPTCP_MAX];
33*4882a593Smuzhiyun };
34*4882a593Smuzhiyun 
MPTCP_INC_STATS(struct net * net,enum linux_mptcp_mib_field field)35*4882a593Smuzhiyun static inline void MPTCP_INC_STATS(struct net *net,
36*4882a593Smuzhiyun 				   enum linux_mptcp_mib_field field)
37*4882a593Smuzhiyun {
38*4882a593Smuzhiyun 	if (likely(net->mib.mptcp_statistics))
39*4882a593Smuzhiyun 		SNMP_INC_STATS(net->mib.mptcp_statistics, field);
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun 
__MPTCP_INC_STATS(struct net * net,enum linux_mptcp_mib_field field)42*4882a593Smuzhiyun static inline void __MPTCP_INC_STATS(struct net *net,
43*4882a593Smuzhiyun 				     enum linux_mptcp_mib_field field)
44*4882a593Smuzhiyun {
45*4882a593Smuzhiyun 	if (likely(net->mib.mptcp_statistics))
46*4882a593Smuzhiyun 		__SNMP_INC_STATS(net->mib.mptcp_statistics, field);
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun 
49*4882a593Smuzhiyun bool mptcp_mib_alloc(struct net *net);
50