The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/netinet6/mld6_var.h

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 2009 Bruce Simpson.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 3. The name of the author may not be used to endorse or promote
   15  *    products derived from this software without specific prior written
   16  *    permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  *
   30  * $FreeBSD: head/sys/netinet6/mld6_var.h 343395 2019-01-24 08:34:13Z hselasky $
   31  */
   32 #ifndef _NETINET6_MLD6_VAR_H_
   33 #define _NETINET6_MLD6_VAR_H_
   34 
   35 /*
   36  * Multicast Listener Discovery (MLD)
   37  * implementation-specific definitions.
   38  */
   39 
   40 /*
   41  * MLD per-group states.
   42  */
   43 #define MLD_NOT_MEMBER                  0 /* Can garbage collect group */
   44 #define MLD_SILENT_MEMBER               1 /* Do not perform MLD for group */
   45 #define MLD_REPORTING_MEMBER            2 /* MLDv1 we are reporter */
   46 #define MLD_IDLE_MEMBER                 3 /* MLDv1 we reported last */
   47 #define MLD_LAZY_MEMBER                 4 /* MLDv1 other member reporting */
   48 #define MLD_SLEEPING_MEMBER             5 /* MLDv1 start query response */
   49 #define MLD_AWAKENING_MEMBER            6 /* MLDv1 group timer will start */
   50 #define MLD_G_QUERY_PENDING_MEMBER      7 /* MLDv2 group query pending */
   51 #define MLD_SG_QUERY_PENDING_MEMBER     8 /* MLDv2 source query pending */
   52 #define MLD_LEAVING_MEMBER              9 /* MLDv2 dying gasp (pending last */
   53                                           /* retransmission of INCLUDE {}) */
   54 
   55 /*
   56  * MLD version tag.
   57  */
   58 #define MLD_VERSION_NONE                0 /* Invalid */
   59 #define MLD_VERSION_1                   1
   60 #define MLD_VERSION_2                   2 /* Default */
   61 
   62 /*
   63  * MLDv2 protocol control variables.
   64  */
   65 #define MLD_RV_INIT             2       /* Robustness Variable */
   66 #define MLD_RV_MIN              1
   67 #define MLD_RV_MAX              7
   68 
   69 #define MLD_QI_INIT             125     /* Query Interval (s) */
   70 #define MLD_QI_MIN              1
   71 #define MLD_QI_MAX              255
   72 
   73 #define MLD_QRI_INIT            10      /* Query Response Interval (s) */
   74 #define MLD_QRI_MIN             1
   75 #define MLD_QRI_MAX             255
   76 
   77 #define MLD_URI_INIT            3       /* Unsolicited Report Interval (s) */
   78 #define MLD_URI_MIN             0
   79 #define MLD_URI_MAX             10
   80 
   81 #define MLD_MAX_GS_SOURCES              256 /* # of sources in rx GS query */
   82 #define MLD_MAX_G_GS_PACKETS            8 /* # of packets to answer G/GS */
   83 #define MLD_MAX_STATE_CHANGE_PACKETS    8 /* # of packets per state change */
   84 #define MLD_MAX_RESPONSE_PACKETS        16 /* # of packets for general query */
   85 #define MLD_MAX_RESPONSE_BURST          4 /* # of responses to send at once */
   86 #define MLD_RESPONSE_BURST_INTERVAL     (PR_FASTHZ / 2) /* 500ms */
   87 
   88 /*
   89  * MLD-specific mbuf flags.
   90  */
   91 #define M_MLDV1         M_PROTO1        /* Packet is MLDv1 */
   92 #define M_GROUPREC      M_PROTO3        /* mbuf chain is a group record */
   93 
   94 /*
   95  * Leading space for MLDv2 reports inside MTU.
   96  *
   97  * NOTE: This differs from IGMPv3 significantly. KAME IPv6 requires
   98  * that a fully formed mbuf chain *without* the Router Alert option
   99  * is passed to ip6_output(), however we must account for it in the
  100  * MTU if we need to split an MLDv2 report into several packets.
  101  *
  102  * We now put the MLDv2 report header in the initial mbuf containing
  103  * the IPv6 header.
  104  */
  105 #define MLD_MTUSPACE    (sizeof(struct ip6_hdr) + sizeof(struct mld_raopt) + \
  106                          sizeof(struct icmp6_hdr))
  107 
  108 /*
  109  * Structure returned by net.inet6.mld.ifinfo.
  110  */
  111 struct mld_ifinfo {
  112         uint32_t mli_version;   /* MLDv1 Host Compatibility Mode */
  113         uint32_t mli_v1_timer;  /* MLDv1 Querier Present timer (s) */
  114         uint32_t mli_v2_timer;  /* MLDv2 General Query (interface) timer (s)*/
  115         uint32_t mli_flags;     /* MLD per-interface flags */
  116 #define MLIF_SILENT     0x00000001      /* Do not use MLD on this ifp */
  117 #define MLIF_USEALLOW   0x00000002      /* Use ALLOW/BLOCK for joins/leaves */
  118         uint32_t mli_rv;        /* MLDv2 Robustness Variable */
  119         uint32_t mli_qi;        /* MLDv2 Query Interval (s) */
  120         uint32_t mli_qri;       /* MLDv2 Query Response Interval (s) */
  121         uint32_t mli_uri;       /* MLDv2 Unsolicited Report Interval (s) */
  122 };
  123 
  124 #ifdef _KERNEL
  125 /*
  126  * Per-link MLD state.
  127  */
  128 struct mld_ifsoftc {
  129         LIST_ENTRY(mld_ifsoftc) mli_link;
  130         struct ifnet *mli_ifp;  /* interface this instance belongs to */
  131         uint32_t mli_version;   /* MLDv1 Host Compatibility Mode */
  132         uint32_t mli_v1_timer;  /* MLDv1 Querier Present timer (s) */
  133         uint32_t mli_v2_timer;  /* MLDv2 General Query (interface) timer (s)*/
  134         uint32_t mli_flags;     /* MLD per-interface flags */
  135         uint32_t mli_rv;        /* MLDv2 Robustness Variable */
  136         uint32_t mli_qi;        /* MLDv2 Query Interval (s) */
  137         uint32_t mli_qri;       /* MLDv2 Query Response Interval (s) */
  138         uint32_t mli_uri;       /* MLDv2 Unsolicited Report Interval (s) */
  139         struct mbufq     mli_gq;        /* queue of general query responses */
  140 };
  141 
  142 #define MLD_RANDOM_DELAY(X)             (arc4random() % (X) + 1)
  143 #define MLD_MAX_STATE_CHANGES           24 /* Max pending changes per group */
  144 
  145 /*
  146  * Subsystem lock macros.
  147  * The MLD lock is only taken with MLD. Currently it is system-wide.
  148  * VIMAGE: The lock could be pushed to per-VIMAGE granularity in future.
  149  */
  150 #define MLD_LOCK_INIT() mtx_init(&mld_mtx, "mld_mtx", NULL, MTX_DEF)
  151 #define MLD_LOCK_DESTROY()      mtx_destroy(&mld_mtx)
  152 #define MLD_LOCK()              mtx_lock(&mld_mtx)
  153 #define MLD_LOCK_ASSERT()       mtx_assert(&mld_mtx, MA_OWNED)
  154 #define MLD_UNLOCK()            mtx_unlock(&mld_mtx)
  155 #define MLD_UNLOCK_ASSERT()     mtx_assert(&mld_mtx, MA_NOTOWNED)
  156 
  157 /*
  158  * Per-link MLD context.
  159  */
  160 #define MLD_IFINFO(ifp) \
  161         (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->mld_ifinfo)
  162 
  163 struct in6_multi_head;
  164 int     mld_change_state(struct in6_multi *, const int);
  165 struct mld_ifsoftc *
  166         mld_domifattach(struct ifnet *);
  167 void    mld_domifdetach(struct ifnet *);
  168 void    mld_fasttimo(void);
  169 void    mld_ifdetach(struct ifnet *, struct in6_multi_head *);
  170 int     mld_input(struct mbuf *, int, int);
  171 void    mld_slowtimo(void);
  172 
  173 #ifdef SYSCTL_DECL
  174 SYSCTL_DECL(_net_inet6_mld);
  175 #endif
  176 
  177 #endif /* _KERNEL */
  178 
  179 #endif /* _NETINET6_MLD6_VAR_H_ */

Cache object: 875fc0ee9183aca0ddcc00854fb5cf3d


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.