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