1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 3 #include <net/inet_common.h> 4 5 enum linux_mptcp_mib_field { 6 MPTCP_MIB_NUM = 0, 7 MPTCP_MIB_MPCAPABLEPASSIVE, /* Received SYN with MP_CAPABLE */ 8 MPTCP_MIB_MPCAPABLEACTIVE, /* Sent SYN with MP_CAPABLE */ 9 MPTCP_MIB_MPCAPABLEACTIVEACK, /* Received SYN/ACK with MP_CAPABLE */ 10 MPTCP_MIB_MPCAPABLEPASSIVEACK, /* Received third ACK with MP_CAPABLE */ 11 MPTCP_MIB_MPCAPABLEPASSIVEFALLBACK,/* Server-side fallback during 3-way handshake */ 12 MPTCP_MIB_MPCAPABLEACTIVEFALLBACK, /* Client-side fallback during 3-way handshake */ 13 MPTCP_MIB_TOKENFALLBACKINIT, /* Could not init/allocate token */ 14 MPTCP_MIB_RETRANSSEGS, /* Segments retransmitted at the MPTCP-level */ 15 MPTCP_MIB_JOINNOTOKEN, /* Received MP_JOIN but the token was not found */ 16 MPTCP_MIB_JOINSYNRX, /* Received a SYN + MP_JOIN */ 17 MPTCP_MIB_JOINSYNBACKUPRX, /* Received a SYN + MP_JOIN + backup flag */ 18 MPTCP_MIB_JOINSYNACKRX, /* Received a SYN/ACK + MP_JOIN */ 19 MPTCP_MIB_JOINSYNACKBACKUPRX, /* Received a SYN/ACK + MP_JOIN + backup flag */ 20 MPTCP_MIB_JOINSYNACKMAC, /* HMAC was wrong on SYN/ACK + MP_JOIN */ 21 MPTCP_MIB_JOINACKRX, /* Received an ACK + MP_JOIN */ 22 MPTCP_MIB_JOINACKMAC, /* HMAC was wrong on ACK + MP_JOIN */ 23 MPTCP_MIB_DSSNOMATCH, /* Received a new mapping that did not match the previous one */ 24 MPTCP_MIB_INFINITEMAPTX, /* Sent an infinite mapping */ 25 MPTCP_MIB_INFINITEMAPRX, /* Received an infinite mapping */ 26 MPTCP_MIB_DSSTCPMISMATCH, /* DSS-mapping did not map with TCP's sequence numbers */ 27 MPTCP_MIB_DATACSUMERR, /* The data checksum fail */ 28 MPTCP_MIB_OFOQUEUETAIL, /* Segments inserted into OoO queue tail */ 29 MPTCP_MIB_OFOQUEUE, /* Segments inserted into OoO queue */ 30 MPTCP_MIB_OFOMERGE, /* Segments merged in OoO queue */ 31 MPTCP_MIB_NODSSWINDOW, /* Segments not in MPTCP windows */ 32 MPTCP_MIB_DUPDATA, /* Segments discarded due to duplicate DSS */ 33 MPTCP_MIB_ADDADDR, /* Received ADD_ADDR with echo-flag=0 */ 34 MPTCP_MIB_ADDADDRTX, /* Sent ADD_ADDR with echo-flag=0 */ 35 MPTCP_MIB_ADDADDRTXDROP, /* ADD_ADDR with echo-flag=0 not send due to 36 * resource exhaustion 37 */ 38 MPTCP_MIB_ECHOADD, /* Received ADD_ADDR with echo-flag=1 */ 39 MPTCP_MIB_ECHOADDTX, /* Send ADD_ADDR with echo-flag=1 */ 40 MPTCP_MIB_ECHOADDTXDROP, /* ADD_ADDR with echo-flag=1 not send due 41 * to resource exhaustion 42 */ 43 MPTCP_MIB_PORTADD, /* Received ADD_ADDR with a port-number */ 44 MPTCP_MIB_ADDADDRDROP, /* Dropped incoming ADD_ADDR */ 45 MPTCP_MIB_JOINPORTSYNRX, /* Received a SYN MP_JOIN with a different port-number */ 46 MPTCP_MIB_JOINPORTSYNACKRX, /* Received a SYNACK MP_JOIN with a different port-number */ 47 MPTCP_MIB_JOINPORTACKRX, /* Received an ACK MP_JOIN with a different port-number */ 48 MPTCP_MIB_MISMATCHPORTSYNRX, /* Received a SYN MP_JOIN with a mismatched port-number */ 49 MPTCP_MIB_MISMATCHPORTACKRX, /* Received an ACK MP_JOIN with a mismatched port-number */ 50 MPTCP_MIB_RMADDR, /* Received RM_ADDR */ 51 MPTCP_MIB_RMADDRDROP, /* Dropped incoming RM_ADDR */ 52 MPTCP_MIB_RMADDRTX, /* Sent RM_ADDR */ 53 MPTCP_MIB_RMADDRTXDROP, /* RM_ADDR not sent due to resource exhaustion */ 54 MPTCP_MIB_RMSUBFLOW, /* Remove a subflow */ 55 MPTCP_MIB_MPPRIOTX, /* Transmit a MP_PRIO */ 56 MPTCP_MIB_MPPRIORX, /* Received a MP_PRIO */ 57 MPTCP_MIB_MPFAILTX, /* Transmit a MP_FAIL */ 58 MPTCP_MIB_MPFAILRX, /* Received a MP_FAIL */ 59 MPTCP_MIB_MPFASTCLOSETX, /* Transmit a MP_FASTCLOSE */ 60 MPTCP_MIB_MPFASTCLOSERX, /* Received a MP_FASTCLOSE */ 61 MPTCP_MIB_MPRSTTX, /* Transmit a MP_RST */ 62 MPTCP_MIB_MPRSTRX, /* Received a MP_RST */ 63 MPTCP_MIB_RCVPRUNED, /* Incoming packet dropped due to memory limit */ 64 MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */ 65 MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */ 66 MPTCP_MIB_SNDWNDSHARED, /* Subflow snd wnd is overridden by msk's one */ 67 MPTCP_MIB_RCVWNDSHARED, /* Subflow rcv wnd is overridden by msk's one */ 68 MPTCP_MIB_RCVWNDCONFLICTUPDATE, /* subflow rcv wnd is overridden by msk's one due to 69 * conflict with another subflow while updating msk rcv wnd 70 */ 71 MPTCP_MIB_RCVWNDCONFLICT, /* Conflict with while updating msk rcv wnd */ 72 MPTCP_MIB_CURRESTAB, /* Current established MPTCP connections */ 73 __MPTCP_MIB_MAX 74 }; 75 76 #define LINUX_MIB_MPTCP_MAX __MPTCP_MIB_MAX 77 struct mptcp_mib { 78 unsigned long mibs[LINUX_MIB_MPTCP_MAX]; 79 }; 80 81 static inline void MPTCP_ADD_STATS(struct net *net, 82 enum linux_mptcp_mib_field field, 83 int val) 84 { 85 if (likely(net->mib.mptcp_statistics)) 86 SNMP_ADD_STATS(net->mib.mptcp_statistics, field, val); 87 } 88 89 static inline void MPTCP_INC_STATS(struct net *net, 90 enum linux_mptcp_mib_field field) 91 { 92 if (likely(net->mib.mptcp_statistics)) 93 SNMP_INC_STATS(net->mib.mptcp_statistics, field); 94 } 95 96 static inline void __MPTCP_INC_STATS(struct net *net, 97 enum linux_mptcp_mib_field field) 98 { 99 if (likely(net->mib.mptcp_statistics)) 100 __SNMP_INC_STATS(net->mib.mptcp_statistics, field); 101 } 102 103 static inline void MPTCP_DEC_STATS(struct net *net, 104 enum linux_mptcp_mib_field field) 105 { 106 if (likely(net->mib.mptcp_statistics)) 107 SNMP_DEC_STATS(net->mib.mptcp_statistics, field); 108 } 109 110 bool mptcp_mib_alloc(struct net *net); 111