pimd/pim_mroute.h

   1 /*
   2  * PIM for Quagga
   3  * Copyright (C) 2008  Everton da Silva Marques
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; see the file COPYING; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  18  */
  19
  20 #ifndef PIM_MROUTE_H
  21 #define PIM_MROUTE_H
  22
  23 /*
  24   For msghdr.msg_control in Solaris 10
  25 */
  26 #ifndef _XPG4_2
  27 #define _XPG4_2
  28 #endif
  29 #ifndef __EXTENSIONS__
  30 #define __EXTENSIONS__
  31 #endif
  32
  33 #include <netinet/in.h>
  34 #ifdef HAVE_NETINET_IP_MROUTE_H
  35 #include <netinet/ip_mroute.h>
  36 #endif
  37
  38 #define PIM_MROUTE_MIN_TTL (1)
  39
  40 #if defined(HAVE_LINUX_MROUTE_H)
  41 #include <linux/mroute.h>
  42 #else
  43 /*
  44   Below: from <linux/mroute.h>
  45 */
  46
  47 #ifndef MAXVIFS
  48 #define MAXVIFS (256)
  49 #endif
  50
  51 #ifndef SIOCGETVIFCNT
  52 #define SIOCGETVIFCNT   SIOCPROTOPRIVATE        /* IP protocol privates */
  53 #define SIOCGETSGCNT    (SIOCPROTOPRIVATE+1)
  54 #define SIOCGETRPF      (SIOCPROTOPRIVATE+2)
  55 #endif
  56
  57 #ifndef MRT_INIT
  58 #define MRT_BASE     200
  59 #define MRT_INIT     (MRT_BASE)      /* Activate the kernel mroute code      */
  60 #define MRT_DONE     (MRT_BASE+1)    /* Shutdown the kernel mroute           */
  61 #define MRT_ADD_VIF  (MRT_BASE+2)    /* Add a virtual interface              */
  62 #define MRT_DEL_VIF  (MRT_BASE+3)    /* Delete a virtual interface           */
  63 #define MRT_ADD_MFC  (MRT_BASE+4)    /* Add a multicast forwarding entry     */
  64 #define MRT_DEL_MFC  (MRT_BASE+5)    /* Delete a multicast forwarding entry  */
  65 #define MRT_VERSION  (MRT_BASE+6)    /* Get the kernel multicast version     */
  66 #define MRT_ASSERT   (MRT_BASE+7)    /* Activate PIM assert mode             */
  67 #define MRT_PIM      (MRT_BASE+8)    /* enable PIM code      */
  68 #endif
  69
  70 #ifndef MRT_TABLE
  71 #define MRT_TABLE    (209)           /* Specify mroute table ID */
  72 #endif
  73
  74 #ifndef HAVE_VIFI_T
  75 typedef unsigned short vifi_t;
  76 #endif
  77
  78 #ifndef HAVE_STRUCT_VIFCTL
  79 struct vifctl {
  80         vifi_t vifc_vifi;            /* Index of VIF */
  81         unsigned char vifc_flags;     /* VIFF_ flags */
  82         unsigned char vifc_threshold; /* ttl limit */
  83         unsigned int vifc_rate_limit; /* Rate limiter values (NI) */
  84         struct in_addr vifc_lcl_addr; /* Our address */
  85         struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */
  86 };
  87 #endif
  88
  89 #ifndef HAVE_STRUCT_MFCCTL
  90 struct mfcctl {
  91         struct in_addr mfcc_origin;       /* Origin of mcast      */
  92         struct in_addr mfcc_mcastgrp;     /* Group in question    */
  93         vifi_t mfcc_parent;               /* Where it arrived     */
  94         unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going    */
  95         unsigned int mfcc_pkt_cnt;      /* pkt count for src-grp */
  96         unsigned int mfcc_byte_cnt;
  97         unsigned int mfcc_wrong_if;
  98         int mfcc_expire;
  99 };
 100 #endif
 101
 102 /*
 103  *      Group count retrieval for mrouted
 104  */
 105 /*
 106   struct sioc_sg_req sgreq;
 107   memset(&sgreq, 0, sizeof(sgreq));
 108   memcpy(&sgreq.src, &source_addr, sizeof(sgreq.src));
 109   memcpy(&sgreq.grp, &group_addr, sizeof(sgreq.grp));
 110   ioctl(mrouter_s4, SIOCGETSGCNT, &sgreq);
 111  */
 112 #ifndef HAVE_STRUCT_SIOC_SG_REQ
 113 struct sioc_sg_req {
 114         struct in_addr src;
 115         struct in_addr grp;
 116         unsigned long pktcnt;
 117         unsigned long bytecnt;
 118         unsigned long wrong_if;
 119 };
 120 #endif
 121
 122 /*
 123  *      To get vif packet counts
 124  */
 125 /*
 126   struct sioc_vif_req vreq;
 127   memset(&vreq, 0, sizeof(vreq));
 128   vreq.vifi = vif_index;
 129   ioctl(mrouter_s4, SIOCGETVIFCNT, &vreq);
 130  */
 131 #ifndef HAVE_STRUCT_SIOC_VIF_REQ
 132 struct sioc_vif_req {
 133         vifi_t vifi;      /* Which iface */
 134         unsigned long icount; /* In packets */
 135         unsigned long ocount; /* Out packets */
 136         unsigned long ibytes; /* In bytes */
 137         unsigned long obytes; /* Out bytes */
 138 };
 139 #endif
 140
 141 /*
 142  *      Pseudo messages used by mrouted
 143  */
 144 #ifndef IGMPMSG_NOCACHE
 145 #define IGMPMSG_NOCACHE         1               /* Kern cache fill request to mrouted */
 146 #define IGMPMSG_WRONGVIF        2               /* For PIM assert processing (unused) */
 147 #define IGMPMSG_WHOLEPKT        3               /* For PIM Register processing */
 148 #endif
 149
 150 #ifndef HAVE_STRUCT_IGMPMSG
 151 struct igmpmsg {
 152         uint32_t unused1, unused2;
 153         unsigned char im_msgtype; /* What is this */
 154         unsigned char im_mbz;     /* Must be zero */
 155         unsigned char im_vif;     /* Interface (this ought to be a vifi_t!) */
 156         unsigned char unused3;
 157         struct in_addr im_src, im_dst;
 158 };
 159 #endif
 160 #endif
 161
 162 #ifndef IGMPMSG_WRVIFWHOLE
 163 #define IGMPMSG_WRVIFWHOLE      4               /* For PIM processing */
 164 #endif
 165
 166 /*
 167   Above: from <linux/mroute.h>
 168 */
 169
 170 int pim_mroute_socket_enable(struct pim_instance *pim);
 171 int pim_mroute_socket_disable(struct pim_instance *pim);
 172
 173 int pim_mroute_add_vif(struct interface *ifp, struct in_addr ifaddr,
 174                        unsigned char flags);
 175 int pim_mroute_del_vif(struct interface *ifp);
 176
 177 int pim_mroute_add(struct channel_oil *c_oil, const char *name);
 178 int pim_mroute_del(struct channel_oil *c_oil, const char *name);
 179
 180 void pim_mroute_update_counters(struct channel_oil *c_oil);
 181 #endif /* PIM_MROUTE_H */