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 PIM_IPV == 4
  41 #if defined(HAVE_LINUX_MROUTE_H)
  42 #include <linux/mroute.h>
  43 #else
  44 /*
  45   Below: from <linux/mroute.h>
  46 */
  47
  48 #ifndef MAXVIFS
  49 #define MAXVIFS (256)
  50 #endif
  51
  52 #ifndef SIOCGETVIFCNT
  53 #define SIOCGETVIFCNT   SIOCPROTOPRIVATE        /* IP protocol privates */
  54 #define SIOCGETSGCNT    (SIOCPROTOPRIVATE+1)
  55 #define SIOCGETRPF      (SIOCPROTOPRIVATE+2)
  56 #endif
  57
  58 #ifndef MRT_INIT
  59 #define MRT_BASE     200
  60 #define MRT_INIT     (MRT_BASE)      /* Activate the kernel mroute code      */
  61 #define MRT_DONE     (MRT_BASE+1)    /* Shutdown the kernel mroute           */
  62 #define MRT_ADD_VIF  (MRT_BASE+2)    /* Add a virtual interface              */
  63 #define MRT_DEL_VIF  (MRT_BASE+3)    /* Delete a virtual interface           */
  64 #define MRT_ADD_MFC  (MRT_BASE+4)    /* Add a multicast forwarding entry     */
  65 #define MRT_DEL_MFC  (MRT_BASE+5)    /* Delete a multicast forwarding entry  */
  66 #define MRT_VERSION  (MRT_BASE+6)    /* Get the kernel multicast version     */
  67 #define MRT_ASSERT   (MRT_BASE+7)    /* Activate PIM assert mode             */
  68 #define MRT_PIM      (MRT_BASE+8)    /* enable PIM code      */
  69 #endif
  70
  71 #ifndef MRT_TABLE
  72 #define MRT_TABLE    (209)           /* Specify mroute table ID */
  73 #endif
  74
  75 #ifndef HAVE_VIFI_T
  76 typedef unsigned short vifi_t;
  77 #endif
  78
  79 #ifndef HAVE_STRUCT_VIFCTL
  80 struct vifctl {
  81         vifi_t vifc_vifi;            /* Index of VIF */
  82         unsigned char vifc_flags;     /* VIFF_ flags */
  83         unsigned char vifc_threshold; /* ttl limit */
  84         unsigned int vifc_rate_limit; /* Rate limiter values (NI) */
  85         struct in_addr vifc_lcl_addr; /* Our address */
  86         struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */
  87 };
  88 #endif
  89
  90 #ifndef HAVE_STRUCT_MFCCTL
  91 struct mfcctl {
  92         struct in_addr mfcc_origin;       /* Origin of mcast      */
  93         struct in_addr mfcc_mcastgrp;     /* Group in question    */
  94         vifi_t mfcc_parent;               /* Where it arrived     */
  95         unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going    */
  96         unsigned int mfcc_pkt_cnt;      /* pkt count for src-grp */
  97         unsigned int mfcc_byte_cnt;
  98         unsigned int mfcc_wrong_if;
  99         int mfcc_expire;
 100 };
 101 #endif
 102
 103 /*
 104  *      Group count retrieval for mrouted
 105  */
 106 /*
 107   struct sioc_sg_req sgreq;
 108   memset(&sgreq, 0, sizeof(sgreq));
 109   memcpy(&sgreq.src, &source_addr, sizeof(sgreq.src));
 110   memcpy(&sgreq.grp, &group_addr, sizeof(sgreq.grp));
 111   ioctl(mrouter_s4, SIOCGETSGCNT, &sgreq);
 112  */
 113 #ifndef HAVE_STRUCT_SIOC_SG_REQ
 114 struct sioc_sg_req {
 115         struct in_addr src;
 116         struct in_addr grp;
 117         unsigned long pktcnt;
 118         unsigned long bytecnt;
 119         unsigned long wrong_if;
 120 };
 121 #endif
 122
 123 /*
 124  *      To get vif packet counts
 125  */
 126 /*
 127   struct sioc_vif_req vreq;
 128   memset(&vreq, 0, sizeof(vreq));
 129   vreq.vifi = vif_index;
 130   ioctl(mrouter_s4, SIOCGETVIFCNT, &vreq);
 131  */
 132 #ifndef HAVE_STRUCT_SIOC_VIF_REQ
 133 struct sioc_vif_req {
 134         vifi_t vifi;      /* Which iface */
 135         unsigned long icount; /* In packets */
 136         unsigned long ocount; /* Out packets */
 137         unsigned long ibytes; /* In bytes */
 138         unsigned long obytes; /* Out bytes */
 139 };
 140 #endif
 141
 142 /*
 143  *      Pseudo messages used by mrouted
 144  */
 145 #ifndef IGMPMSG_NOCACHE
 146 #define IGMPMSG_NOCACHE         1               /* Kern cache fill request to mrouted */
 147 #define IGMPMSG_WRONGVIF        2               /* For PIM assert processing (unused) */
 148 #define IGMPMSG_WHOLEPKT        3               /* For PIM Register processing */
 149 #endif
 150
 151 #ifndef HAVE_STRUCT_IGMPMSG
 152 struct igmpmsg {
 153         uint32_t unused1, unused2;
 154         unsigned char im_msgtype; /* What is this */
 155         unsigned char im_mbz;     /* Must be zero */
 156         unsigned char im_vif;     /* Interface (this ought to be a vifi_t!) */
 157         unsigned char unused3;
 158         struct in_addr im_src, im_dst;
 159 };
 160 #endif
 161
 162 #endif /* HAVE_LINUX_MROUTE_H */
 163
 164 typedef struct mfcctl pim_mfcctl;
 165
 166 #else /* PIM_IPV != 4 */
 167 #if defined(HAVE_LINUX_MROUTE6_H)
 168 #include <linux/mroute6.h>
 169 #endif
 170
 171 typedef struct mf6cctl pim_mfcctl;
 172
 173 #define MAXVIFS IF_SETSIZE
 174 #endif
 175
 176 #ifndef IGMPMSG_WRVIFWHOLE
 177 #define IGMPMSG_WRVIFWHOLE      4               /* For PIM processing */
 178 #endif
 179
 180 /*
 181   Above: from <linux/mroute.h>
 182 */
 183
 184 struct channel_oil;
 185
 186 int pim_mroute_socket_enable(struct pim_instance *pim);
 187 int pim_mroute_socket_disable(struct pim_instance *pim);
 188
 189 int pim_mroute_add_vif(struct interface *ifp, pim_addr ifaddr,
 190                        unsigned char flags);
 191 int pim_mroute_del_vif(struct interface *ifp);
 192
 193 int pim_upstream_mroute_add(struct channel_oil *c_oil, const char *name);
 194 int pim_upstream_mroute_iif_update(struct channel_oil *c_oil, const char *name);
 195 int pim_static_mroute_add(struct channel_oil *c_oil, const char *name);
 196 void pim_static_mroute_iif_update(struct channel_oil *c_oil,
 197                                 int input_vif_index,
 198                                 const char *name);
 199 int pim_mroute_del(struct channel_oil *c_oil, const char *name);
 200
 201 void pim_mroute_update_counters(struct channel_oil *c_oil);
 202 bool pim_mroute_allow_iif_in_oil(struct channel_oil *c_oil,
 203                 int oif_index);
 204 #endif /* PIM_MROUTE_H */