net/mptcp/mib.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 enum 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
  31 struct mptcp_mib {
  32         unsigned long mibs[LINUX_MIB_MPTCP_MAX];
  33 };
  34
  35 static 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
  42 static 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
  49 bool mptcp_mib_alloc(struct net *net);