LXR linux/net/mptcp/mib.h

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