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_ADDADDRDROP, /* Dropped incoming ADD_ADDR */ 32 MPTCP_MIB_JOINPORTSYNRX, /* Received a SYN MP_JOIN with a different port-number */ 33 MPTCP_MIB_JOINPORTSYNACKRX, /* Received a SYNACK MP_JOIN with a different port-number */ 34 MPTCP_MIB_JOINPORTACKRX, /* Received an ACK MP_JOIN with a different port-number */ 35 MPTCP_MIB_MISMATCHPORTSYNRX, /* Received a SYN MP_JOIN with a mismatched port-number */ 36 MPTCP_MIB_MISMATCHPORTACKRX, /* Received an ACK MP_JOIN with a mismatched port-number */ 37 MPTCP_MIB_RMADDR, /* Received RM_ADDR */ 38 MPTCP_MIB_RMADDRDROP, /* Dropped incoming RM_ADDR */ 39 MPTCP_MIB_RMSUBFLOW, /* Remove a subflow */ 40 MPTCP_MIB_MPPRIOTX, /* Transmit a MP_PRIO */ 41 MPTCP_MIB_MPPRIORX, /* Received a MP_PRIO */ 42 MPTCP_MIB_MPFAILTX, /* Transmit a MP_FAIL */ 43 MPTCP_MIB_MPFAILRX, /* Received a MP_FAIL */ 44 MPTCP_MIB_MPFASTCLOSETX, /* Transmit a MP_FASTCLOSE */ 45 MPTCP_MIB_MPFASTCLOSERX, /* Received a MP_FASTCLOSE */ 46 MPTCP_MIB_MPRSTTX, /* Transmit a MP_RST */ 47 MPTCP_MIB_MPRSTRX, /* Received a MP_RST */ 48 MPTCP_MIB_RCVPRUNED, /* Incoming packet dropped due to memory limit */ 49 MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */ 50 MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */ 51 __MPTCP_MIB_MAX 52 }; 53 54 #define LINUX_MIB_MPTCP_MAX __MPTCP_MIB_MAX 55 struct mptcp_mib { 56 unsigned long mibs[LINUX_MIB_MPTCP_MAX]; 57 }; 58 59 static inline void MPTCP_INC_STATS(struct net *net, 60 enum linux_mptcp_mib_field field) 61 { 62 if (likely(net->mib.mptcp_statistics)) 63 SNMP_INC_STATS(net->mib.mptcp_statistics, field); 64 } 65 66 static inline void __MPTCP_INC_STATS(struct net *net, 67 enum linux_mptcp_mib_field field) 68 { 69 if (likely(net->mib.mptcp_statistics)) 70 __SNMP_INC_STATS(net->mib.mptcp_statistics, field); 71 } 72 73 bool mptcp_mib_alloc(struct net *net); 74