pimd/pim_iface.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
  22 #ifndef PIM_IFACE_H
  23 #define PIM_IFACE_H
  24
  25 #include <zebra.h>
  26
  27 #include "if.h"
  28 #include "vty.h"
  29
  30 #include "pim_igmp.h"
  31 #include "pim_upstream.h"
  32
  33 #define PIM_IF_MASK_PIM                             (1 << 0)
  34 #define PIM_IF_MASK_IGMP                            (1 << 1)
  35 #define PIM_IF_MASK_IGMP_LISTEN_ALLROUTERS          (1 << 2)
  36 #define PIM_IF_MASK_PIM_CAN_DISABLE_JOIN_SUPRESSION (1 << 3)
  37
  38 #define PIM_IF_IS_DELETED(ifp) ((ifp)->ifindex == IFINDEX_INTERNAL)
  39
  40 #define PIM_IF_TEST_PIM(options) (PIM_IF_MASK_PIM & (options))
  41 #define PIM_IF_TEST_IGMP(options) (PIM_IF_MASK_IGMP & (options))
  42 #define PIM_IF_TEST_IGMP_LISTEN_ALLROUTERS(options) (PIM_IF_MASK_IGMP_LISTEN_ALLROUTERS & (options))
  43 #define PIM_IF_TEST_PIM_CAN_DISABLE_JOIN_SUPRESSION(options) (PIM_IF_MASK_PIM_CAN_DISABLE_JOIN_SUPRESSION & (options))
  44
  45 #define PIM_IF_DO_PIM(options) ((options) |= PIM_IF_MASK_PIM)
  46 #define PIM_IF_DO_IGMP(options) ((options) |= PIM_IF_MASK_IGMP)
  47 #define PIM_IF_DO_IGMP_LISTEN_ALLROUTERS(options) ((options) |= PIM_IF_MASK_IGMP_LISTEN_ALLROUTERS)
  48 #define PIM_IF_DO_PIM_CAN_DISABLE_JOIN_SUPRESSION(options) ((options) |= PIM_IF_MASK_PIM_CAN_DISABLE_JOIN_SUPRESSION)
  49
  50 #define PIM_IF_DONT_PIM(options) ((options) &= ~PIM_IF_MASK_PIM)
  51 #define PIM_IF_DONT_IGMP(options) ((options) &= ~PIM_IF_MASK_IGMP)
  52 #define PIM_IF_DONT_IGMP_LISTEN_ALLROUTERS(options) ((options) &= ~PIM_IF_MASK_IGMP_LISTEN_ALLROUTERS)
  53 #define PIM_IF_DONT_PIM_CAN_DISABLE_JOIN_SUPRESSION(options) ((options) &= ~PIM_IF_MASK_PIM_CAN_DISABLE_JOIN_SUPRESSION)
  54
  55 #define PIM_I_am_DR(pim_ifp) (pim_ifp)->pim_dr_addr.s_addr == (pim_ifp)->primary_address.s_addr
  56
  57 enum pim_interface_type {
  58   PIM_INTERFACE_SSM,
  59   PIM_INTERFACE_SM
  60 };
  61
  62 struct pim_interface {
  63   enum pim_interface_type itype;
  64   uint32_t       options;                            /* bit vector */
  65   ifindex_t      mroute_vif_index;
  66   struct in_addr primary_address; /* remember addr to detect change */
  67
  68   int          igmp_default_robustness_variable;            /* IGMPv3 QRV */
  69   int          igmp_default_query_interval;                 /* IGMPv3 secs between general queries */
  70   int          igmp_query_max_response_time_dsec;           /* IGMPv3 Max Response Time in dsecs for general queries */
  71   int          igmp_specific_query_max_response_time_dsec;  /* IGMPv3 Max Response Time in dsecs for specific queries */
  72   struct list *igmp_socket_list;                            /* list of struct igmp_sock */
  73   struct list *igmp_join_list;                              /* list of struct igmp_join */
  74
  75   int            pim_sock_fd;       /* PIM socket file descriptor */
  76   struct thread *t_pim_sock_read;   /* thread for reading PIM socket */
  77   int64_t        pim_sock_creation; /* timestamp of PIM socket creation */
  78
  79   struct thread *t_pim_hello_timer;
  80   int            pim_hello_period;
  81   int            pim_default_holdtime;
  82   int            pim_triggered_hello_delay;
  83   uint32_t       pim_generation_id;
  84   uint16_t       pim_propagation_delay_msec; /* config */
  85   uint16_t       pim_override_interval_msec; /* config */
  86   struct list   *pim_neighbor_list; /* list of struct pim_neighbor */
  87   struct list   *pim_ifchannel_list; /* list of struct pim_ifchannel */
  88
  89   /* neighbors without lan_delay */
  90   int            pim_number_of_nonlandelay_neighbors;
  91   uint16_t       pim_neighbors_highest_propagation_delay_msec;
  92   uint16_t       pim_neighbors_highest_override_interval_msec;
  93
  94   /* DR Election */
  95   int64_t        pim_dr_election_last; /* timestamp */
  96   int            pim_dr_election_count;
  97   int            pim_dr_election_changes;
  98   struct in_addr pim_dr_addr;
  99   uint32_t       pim_dr_priority;            /* config */
 100   int            pim_dr_num_nondrpri_neighbors; /* neighbors without dr_pri */
 101
 102   int64_t        pim_ifstat_start; /* start timestamp for stats */
 103   uint32_t       pim_ifstat_hello_sent;
 104   uint32_t       pim_ifstat_hello_sendfail;
 105   uint32_t       pim_ifstat_hello_recv;
 106   uint32_t       pim_ifstat_hello_recvfail;
 107 };
 108
 109 extern struct interface *pim_regiface;
 110 /*
 111   if default_holdtime is set (>= 0), use it;
 112   otherwise default_holdtime is 3.5 * hello_period
 113  */
 114 #define PIM_IF_DEFAULT_HOLDTIME(pim_ifp) \
 115   (((pim_ifp)->pim_default_holdtime < 0) ? \
 116   ((pim_ifp)->pim_hello_period * 7 / 2) : \
 117   ((pim_ifp)->pim_default_holdtime))
 118
 119 void pim_if_init(void);
 120
 121 struct pim_interface *pim_if_new(struct interface *ifp, int igmp, int pim);
 122 void                  pim_if_delete(struct interface *ifp);
 123 void pim_if_addr_add(struct connected *ifc);
 124 void pim_if_addr_del(struct connected *ifc, int force_prim_as_any);
 125 void pim_if_addr_add_all(struct interface *ifp);
 126 void pim_if_addr_del_all(struct interface *ifp);
 127 void pim_if_addr_del_all_igmp(struct interface *ifp);
 128 void pim_if_addr_del_all_pim(struct interface *ifp);
 129
 130 int pim_if_add_vif(struct interface *ifp);
 131 int pim_if_del_vif(struct interface *ifp);
 132 void pim_if_add_vif_all(void);
 133 void pim_if_del_vif_all(void);
 134
 135 struct interface *pim_if_find_by_vif_index(ifindex_t vif_index);
 136 int pim_if_find_vifindex_by_ifindex(ifindex_t ifindex);
 137
 138 int pim_if_lan_delay_enabled(struct interface *ifp);
 139 uint16_t pim_if_effective_propagation_delay_msec(struct interface *ifp);
 140 uint16_t pim_if_effective_override_interval_msec(struct interface *ifp);
 141 uint16_t pim_if_jp_override_interval_msec(struct interface *ifp);
 142 struct pim_neighbor *pim_if_find_neighbor(struct interface *ifp,
 143                                           struct in_addr addr);
 144
 145 long pim_if_t_suppressed_msec(struct interface *ifp);
 146 int pim_if_t_override_msec(struct interface *ifp);
 147
 148 struct in_addr pim_find_primary_addr(struct interface *ifp);
 149
 150 int pim_if_igmp_join_add(struct interface *ifp,
 151                          struct in_addr group_addr,
 152                          struct in_addr source_addr);
 153 int pim_if_igmp_join_del(struct interface *ifp,
 154                          struct in_addr group_addr,
 155                          struct in_addr source_addr);
 156
 157 void pim_if_update_could_assert(struct interface *ifp);
 158
 159 void pim_if_assert_on_neighbor_down(struct interface *ifp,
 160                                     struct in_addr neigh_addr);
 161
 162 void pim_if_rpf_interface_changed(struct interface *old_rpf_ifp,
 163                                   struct pim_upstream *up);
 164
 165 void pim_if_update_join_desired(struct pim_interface *pim_ifp);
 166
 167 void pim_if_update_assert_tracking_desired(struct interface *ifp);
 168
 169 void pim_if_create_pimreg(void);
 170
 171 int pim_if_connected_to_source (struct interface *ifp, struct in_addr src);
 172 #endif /* PIM_IFACE_H */