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_MPCAPABLEPASSIVEACK,  /* Received third ACK with MP_CAPABLE */
   7        MPTCP_MIB_MPCAPABLEPASSIVEFALLBACK,/* Server-side fallback during 3-way handshake */
   8        MPTCP_MIB_MPCAPABLEACTIVEFALLBACK, /* Client-side fallback during 3-way handshake */
   9        MPTCP_MIB_RETRANSSEGS,          /* Segments retransmitted at the MPTCP-level */
  10        MPTCP_MIB_JOINNOTOKEN,          /* Received MP_JOIN but the token was not found */
  11        MPTCP_MIB_JOINSYNRX,            /* Received a SYN + MP_JOIN */
  12        MPTCP_MIB_JOINSYNACKRX,         /* Received a SYN/ACK + MP_JOIN */
  13        MPTCP_MIB_JOINSYNACKMAC,        /* HMAC was wrong on SYN/ACK + MP_JOIN */
  14        MPTCP_MIB_JOINACKRX,            /* Received an ACK + MP_JOIN */
  15        MPTCP_MIB_JOINACKMAC,           /* HMAC was wrong on ACK + MP_JOIN */
  16        MPTCP_MIB_DSSNOMATCH,           /* Received a new mapping that did not match the previous one */
  17        MPTCP_MIB_INFINITEMAPRX,        /* Received an infinite mapping */
  18        MPTCP_MIB_OFOQUEUETAIL, /* Segments inserted into OoO queue tail */
  19        MPTCP_MIB_OFOQUEUE,             /* Segments inserted into OoO queue */
  20        MPTCP_MIB_OFOMERGE,             /* Segments merged in OoO queue */
  21        MPTCP_MIB_NODSSWINDOW,          /* Segments not in MPTCP windows */
  22        MPTCP_MIB_DUPDATA,              /* Segments discarded due to duplicate DSS */
  23        MPTCP_MIB_ADDADDR,              /* Received ADD_ADDR with echo-flag=0 */
  24        MPTCP_MIB_ECHOADD,              /* Received ADD_ADDR with echo-flag=1 */
  25        MPTCP_MIB_RMADDR,               /* Received RM_ADDR */
  26        MPTCP_MIB_RMSUBFLOW,            /* Remove a subflow */
  27        __MPTCP_MIB_MAX
  28};
  29
  30#define LINUX_MIB_MPTCP_MAX     __MPTCP_MIB_MAX
  31struct mptcp_mib {
  32        unsigned long mibs[LINUX_MIB_MPTCP_MAX];
  33};
  34
  35static inline void MPTCP_INC_STATS(struct net *net,
  36                                   enum linux_mptcp_mib_field field)
  37{
  38        if (likely(net->mib.mptcp_statistics))
  39                SNMP_INC_STATS(net->mib.mptcp_statistics, field);
  40}
  41
  42static inline void __MPTCP_INC_STATS(struct net *net,
  43                                     enum linux_mptcp_mib_field field)
  44{
  45        if (likely(net->mib.mptcp_statistics))
  46                __SNMP_INC_STATS(net->mib.mptcp_statistics, field);
  47}
  48
  49bool mptcp_mib_alloc(struct net *net);
  50