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_MPCAPABLEACTIVEDROP, /* Client-side fallback due to a MPC drop */ 14 MPTCP_MIB_MPCAPABLEACTIVEDISABLED, /* Client-side disabled due to past issues */ 15 MPTCP_MIB_TOKENFALLBACKINIT, /* Could not init/allocate token */ 16 MPTCP_MIB_RETRANSSEGS, /* Segments retransmitted at the MPTCP-level */ 17 MPTCP_MIB_JOINNOTOKEN, /* Received MP_JOIN but the token was not found */ 18 MPTCP_MIB_JOINSYNRX, /* Received a SYN + MP_JOIN */ 19 MPTCP_MIB_JOINSYNBACKUPRX, /* Received a SYN + MP_JOIN + backup flag */ 20 MPTCP_MIB_JOINSYNACKRX, /* Received a SYN/ACK + MP_JOIN */ 21 MPTCP_MIB_JOINSYNACKBACKUPRX, /* Received a SYN/ACK + MP_JOIN + backup flag */ 22 MPTCP_MIB_JOINSYNACKMAC, /* HMAC was wrong on SYN/ACK + MP_JOIN */ 23 MPTCP_MIB_JOINACKRX, /* Received an ACK + MP_JOIN */ 24 MPTCP_MIB_JOINACKMAC, /* HMAC was wrong on ACK + MP_JOIN */ 25 MPTCP_MIB_JOINSYNTX, /* Sending a SYN + MP_JOIN */ 26 MPTCP_MIB_JOINSYNTXCREATSKERR, /* Not able to create a socket when sending a SYN + MP_JOIN */ 27 MPTCP_MIB_JOINSYNTXBINDERR, /* Not able to bind() the address when sending a SYN + MP_JOIN */ 28 MPTCP_MIB_JOINSYNTXCONNECTERR, /* Not able to connect() when sending a SYN + MP_JOIN */ 29 MPTCP_MIB_DSSNOMATCH, /* Received a new mapping that did not match the previous one */ 30 MPTCP_MIB_DSSCORRUPTIONFALLBACK,/* DSS corruption detected, fallback */ 31 MPTCP_MIB_DSSCORRUPTIONRESET, /* DSS corruption detected, MPJ subflow reset */ 32 MPTCP_MIB_INFINITEMAPTX, /* Sent an infinite mapping */ 33 MPTCP_MIB_INFINITEMAPRX, /* Received an infinite mapping */ 34 MPTCP_MIB_DSSTCPMISMATCH, /* DSS-mapping did not map with TCP's sequence numbers */ 35 MPTCP_MIB_DATACSUMERR, /* The data checksum fail */ 36 MPTCP_MIB_OFOQUEUETAIL, /* Segments inserted into OoO queue tail */ 37 MPTCP_MIB_OFOQUEUE, /* Segments inserted into OoO queue */ 38 MPTCP_MIB_OFOMERGE, /* Segments merged in OoO queue */ 39 MPTCP_MIB_NODSSWINDOW, /* Segments not in MPTCP windows */ 40 MPTCP_MIB_DUPDATA, /* Segments discarded due to duplicate DSS */ 41 MPTCP_MIB_ADDADDR, /* Received ADD_ADDR with echo-flag=0 */ 42 MPTCP_MIB_ADDADDRTX, /* Sent ADD_ADDR with echo-flag=0 */ 43 MPTCP_MIB_ADDADDRTXDROP, /* ADD_ADDR with echo-flag=0 not send due to 44 * resource exhaustion 45 */ 46 MPTCP_MIB_ECHOADD, /* Received ADD_ADDR with echo-flag=1 */ 47 MPTCP_MIB_ECHOADDTX, /* Send ADD_ADDR with echo-flag=1 */ 48 MPTCP_MIB_ECHOADDTXDROP, /* ADD_ADDR with echo-flag=1 not send due 49 * to resource exhaustion 50 */ 51 MPTCP_MIB_PORTADD, /* Received ADD_ADDR with a port-number */ 52 MPTCP_MIB_ADDADDRDROP, /* Dropped incoming ADD_ADDR */ 53 MPTCP_MIB_JOINPORTSYNRX, /* Received a SYN MP_JOIN with a different port-number */ 54 MPTCP_MIB_JOINPORTSYNACKRX, /* Received a SYNACK MP_JOIN with a different port-number */ 55 MPTCP_MIB_JOINPORTACKRX, /* Received an ACK MP_JOIN with a different port-number */ 56 MPTCP_MIB_MISMATCHPORTSYNRX, /* Received a SYN MP_JOIN with a mismatched port-number */ 57 MPTCP_MIB_MISMATCHPORTACKRX, /* Received an ACK MP_JOIN with a mismatched port-number */ 58 MPTCP_MIB_RMADDR, /* Received RM_ADDR */ 59 MPTCP_MIB_RMADDRDROP, /* Dropped incoming RM_ADDR */ 60 MPTCP_MIB_RMADDRTX, /* Sent RM_ADDR */ 61 MPTCP_MIB_RMADDRTXDROP, /* RM_ADDR not sent due to resource exhaustion */ 62 MPTCP_MIB_RMSUBFLOW, /* Remove a subflow */ 63 MPTCP_MIB_MPPRIOTX, /* Transmit a MP_PRIO */ 64 MPTCP_MIB_MPPRIORX, /* Received a MP_PRIO */ 65 MPTCP_MIB_MPFAILTX, /* Transmit a MP_FAIL */ 66 MPTCP_MIB_MPFAILRX, /* Received a MP_FAIL */ 67 MPTCP_MIB_MPFASTCLOSETX, /* Transmit a MP_FASTCLOSE */ 68 MPTCP_MIB_MPFASTCLOSERX, /* Received a MP_FASTCLOSE */ 69 MPTCP_MIB_MPRSTTX, /* Transmit a MP_RST */ 70 MPTCP_MIB_MPRSTRX, /* Received a MP_RST */ 71 MPTCP_MIB_RCVPRUNED, /* Incoming packet dropped due to memory limit */ 72 MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */ 73 MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */ 74 MPTCP_MIB_SNDWNDSHARED, /* Subflow snd wnd is overridden by msk's one */ 75 MPTCP_MIB_RCVWNDSHARED, /* Subflow rcv wnd is overridden by msk's one */ 76 MPTCP_MIB_RCVWNDCONFLICTUPDATE, /* subflow rcv wnd is overridden by msk's one due to 77 * conflict with another subflow while updating msk rcv wnd 78 */ 79 MPTCP_MIB_RCVWNDCONFLICT, /* Conflict with while updating msk rcv wnd */ 80 MPTCP_MIB_CURRESTAB, /* Current established MPTCP connections */ 81 MPTCP_MIB_BLACKHOLE, /* A blackhole has been detected */ 82 __MPTCP_MIB_MAX 83 }; 84 85 #define LINUX_MIB_MPTCP_MAX __MPTCP_MIB_MAX 86 struct mptcp_mib { 87 unsigned long mibs[LINUX_MIB_MPTCP_MAX]; 88 }; 89 90 static inline void MPTCP_ADD_STATS(struct net *net, 91 enum linux_mptcp_mib_field field, 92 int val) 93 { 94 if (likely(net->mib.mptcp_statistics)) 95 SNMP_ADD_STATS(net->mib.mptcp_statistics, field, val); 96 } 97 98 static inline void MPTCP_INC_STATS(struct net *net, 99 enum linux_mptcp_mib_field field) 100 { 101 if (likely(net->mib.mptcp_statistics)) 102 SNMP_INC_STATS(net->mib.mptcp_statistics, field); 103 } 104 105 static inline void __MPTCP_INC_STATS(struct net *net, 106 enum linux_mptcp_mib_field field) 107 { 108 if (likely(net->mib.mptcp_statistics)) 109 __SNMP_INC_STATS(net->mib.mptcp_statistics, field); 110 } 111 112 static inline void MPTCP_DEC_STATS(struct net *net, 113 enum linux_mptcp_mib_field field) 114 { 115 if (likely(net->mib.mptcp_statistics)) 116 SNMP_DEC_STATS(net->mib.mptcp_statistics, field); 117 } 118 119 bool mptcp_mib_alloc(struct net *net); 120