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
  16   along with this program; see the file COPYING; if not, write to the
  17   Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  18   MA 02110-1301 USA
  19 */
  20
  21 #ifndef PIM_MROUTE_H
  22 #define PIM_MROUTE_H
  23
  24 /*
  25   For msghdr.msg_control in Solaris 10
  26 */
  27 #ifndef _XPG4_2
  28 #define _XPG4_2
  29 #endif
  30 #ifndef __EXTENSIONS__
  31 #define __EXTENSIONS__
  32 #endif
  33
  34 #include <netinet/in.h>
  35 #ifdef HAVE_NETINET_IP_MROUTE_H
  36 #include <netinet/ip_mroute.h>
  37 #endif
  38
  39 #define PIM_MROUTE_MIN_TTL (1)
  40
  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 HAVE_VIFI_T
  72 typedef unsigned short vifi_t;
  73 #endif
  74
  75 #ifndef HAVE_STRUCT_VIFCTL
  76 struct vifctl {
  77         vifi_t  vifc_vifi;              /* Index of VIF */
  78         unsigned char vifc_flags;       /* VIFF_ flags */
  79         unsigned char vifc_threshold;   /* ttl limit */
  80         unsigned int vifc_rate_limit;   /* Rate limiter values (NI) */
  81         struct in_addr vifc_lcl_addr;   /* Our address */
  82         struct in_addr vifc_rmt_addr;   /* IPIP tunnel addr */
  83 };
  84 #endif
  85
  86 #ifndef HAVE_STRUCT_MFCCTL
  87 struct mfcctl {
  88   struct in_addr mfcc_origin;             /* Origin of mcast      */
  89   struct in_addr mfcc_mcastgrp;           /* Group in question    */
  90   vifi_t         mfcc_parent;             /* Where it arrived     */
  91   unsigned char  mfcc_ttls[MAXVIFS];      /* Where it is going    */
  92   unsigned int   mfcc_pkt_cnt;            /* pkt count for src-grp */
  93   unsigned int   mfcc_byte_cnt;
  94   unsigned int   mfcc_wrong_if;
  95   int            mfcc_expire;
  96 };
  97 #endif
  98
  99 /*
 100  *      Group count retrieval for mrouted
 101  */
 102 /*
 103   struct sioc_sg_req sgreq;
 104   memset(&sgreq, 0, sizeof(sgreq));
 105   memcpy(&sgreq.src, &source_addr, sizeof(sgreq.src));
 106   memcpy(&sgreq.grp, &group_addr, sizeof(sgreq.grp));
 107   ioctl(mrouter_s4, SIOCGETSGCNT, &sgreq);
 108  */
 109 #ifndef HAVE_STRUCT_SIOC_SG_REQ
 110 struct sioc_sg_req {
 111   struct in_addr src;
 112   struct in_addr grp;
 113   unsigned long pktcnt;
 114   unsigned long bytecnt;
 115   unsigned long wrong_if;
 116 };
 117 #endif
 118
 119 /*
 120  *      To get vif packet counts
 121  */
 122 /*
 123   struct sioc_vif_req vreq;
 124   memset(&vreq, 0, sizeof(vreq));
 125   vreq.vifi = vif_index;
 126   ioctl(mrouter_s4, SIOCGETVIFCNT, &vreq);
 127  */
 128 #ifndef HAVE_STRUCT_SIOC_VIF_REQ
 129 struct sioc_vif_req {
 130   vifi_t  vifi;           /* Which iface */
 131   unsigned long icount;   /* In packets */
 132   unsigned long ocount;   /* Out packets */
 133   unsigned long ibytes;   /* In bytes */
 134   unsigned long obytes;   /* Out bytes */
 135 };
 136 #endif
 137
 138 /*
 139  *      Pseudo messages used by mrouted
 140  */
 141 #ifndef IGMPMSG_NOCACHE
 142 #define IGMPMSG_NOCACHE         1               /* Kern cache fill request to mrouted */
 143 #define IGMPMSG_WRONGVIF        2               /* For PIM assert processing (unused) */
 144 #define IGMPMSG_WHOLEPKT        3               /* For PIM Register processing */
 145 #endif
 146
 147 #ifndef HAVE_STRUCT_IGMPMSG
 148 struct igmpmsg
 149 {
 150   uint32_t unused1,unused2;
 151   unsigned char im_msgtype;               /* What is this */
 152   unsigned char im_mbz;                   /* Must be zero */
 153   unsigned char im_vif;                   /* Interface (this ought to be a vifi_t!) */
 154   unsigned char unused3;
 155   struct in_addr im_src,im_dst;
 156 };
 157 #endif
 158 #endif
 159
 160 /*
 161   Above: from <linux/mroute.h>
 162 */
 163
 164 int pim_mroute_socket_enable(void);
 165 int pim_mroute_socket_disable(void);
 166
 167 int pim_mroute_add_vif(struct interface *ifp, struct in_addr ifaddr, unsigned char flags);
 168 int pim_mroute_del_vif(int vif_index);
 169
 170 int pim_mroute_add(struct channel_oil *c_oil);
 171 int pim_mroute_del(struct channel_oil *c_oil);
 172
 173 int pim_mroute_msg(int fd, const char *buf, int buf_size);
 174
 175 void pim_mroute_update_counters (struct channel_oil *c_oil);
 176 #endif /* PIM_MROUTE_H */