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_INFINITEMAPTX, /* Sent an infinite mapping */ 21 MPTCP_MIB_INFINITEMAPRX, /* Received an infinite mapping */ 22 MPTCP_MIB_DSSTCPMISMATCH, /* DSS-mapping did not map with TCP's sequence numbers */ 23 MPTCP_MIB_DATACSUMERR, /* The data checksum fail */ 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 */ 29 MPTCP_MIB_ADDADDR, /* Received ADD_ADDR with echo-flag=0 */ 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 */ 34 MPTCP_MIB_ECHOADD, /* Received ADD_ADDR with echo-flag=1 */ 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 */ 39 MPTCP_MIB_PORTADD, /* Received ADD_ADDR with a port-number */ 40 MPTCP_MIB_ADDADDRDROP, /* Dropped incoming ADD_ADDR */ 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 */ 46 MPTCP_MIB_RMADDR, /* Received RM_ADDR */ 47 MPTCP_MIB_RMADDRDROP, /* Dropped incoming RM_ADDR */ 48 MPTCP_MIB_RMADDRTX, /* Sent RM_ADDR */ 49 MPTCP_MIB_RMADDRTXDROP, /* RM_ADDR not sent due to resource exhaustion */ 50 MPTCP_MIB_RMSUBFLOW, /* Remove a subflow */ 51 MPTCP_MIB_MPPRIOTX, /* Transmit a MP_PRIO */ 52 MPTCP_MIB_MPPRIORX, /* Received a MP_PRIO */ 53 MPTCP_MIB_MPFAILTX, /* Transmit a MP_FAIL */ 54 MPTCP_MIB_MPFAILRX, /* Received a MP_FAIL */ 55 MPTCP_MIB_MPFASTCLOSETX, /* Transmit a MP_FASTCLOSE */ 56 MPTCP_MIB_MPFASTCLOSERX, /* Received a MP_FASTCLOSE */ 57 MPTCP_MIB_MPRSTTX, /* Transmit a MP_RST */ 58 MPTCP_MIB_MPRSTRX, /* Received a MP_RST */ 59 MPTCP_MIB_RCVPRUNED, /* Incoming packet dropped due to memory limit */ 60 MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */ 61 MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */ 62 MPTCP_MIB_SNDWNDSHARED, /* Subflow snd wnd is overridden by msk's one */ 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 */ 68 MPTCP_MIB_CURRESTAB, /* Current established MPTCP connections */ 69 __MPTCP_MIB_MAX 70}; 71 72#define LINUX_MIB_MPTCP_MAX __MPTCP_MIB_MAX 73struct mptcp_mib { 74 unsigned long mibs[LINUX_MIB_MPTCP_MAX]; 75}; 76 77static 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 85static 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 92static 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 99static 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 106bool mptcp_mib_alloc(struct net *net); 107