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 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_IFACE_H
  21 #define PIM_IFACE_H
  22
  23 #include <zebra.h>
  24
  25 #include "if.h"
  26 #include "vty.h"
  27 #include "vrf.h"
  28 #include "zclient.h"
  29
  30 #include "pim_igmp.h"
  31 #include "pim_upstream.h"
  32 #include "bfd.h"
  33
  34 #define PIM_IF_MASK_PIM                             (1 << 0)
  35 #define PIM_IF_MASK_IGMP                            (1 << 1)
  36 #define PIM_IF_MASK_IGMP_LISTEN_ALLROUTERS          (1 << 2)
  37 #define PIM_IF_MASK_PIM_CAN_DISABLE_JOIN_SUPRESSION (1 << 3)
  38
  39 #define PIM_IF_IS_DELETED(ifp) ((ifp)->ifindex == IFINDEX_INTERNAL)
  40
  41 #define PIM_IF_TEST_PIM(options) (PIM_IF_MASK_PIM & (options))
  42 #define PIM_IF_TEST_IGMP(options) (PIM_IF_MASK_IGMP & (options))
  43 #define PIM_IF_TEST_IGMP_LISTEN_ALLROUTERS(options) (PIM_IF_MASK_IGMP_LISTEN_ALLROUTERS & (options))
  44 #define PIM_IF_TEST_PIM_CAN_DISABLE_JOIN_SUPRESSION(options) (PIM_IF_MASK_PIM_CAN_DISABLE_JOIN_SUPRESSION & (options))
  45
  46 #define PIM_IF_DO_PIM(options) ((options) |= PIM_IF_MASK_PIM)
  47 #define PIM_IF_DO_IGMP(options) ((options) |= PIM_IF_MASK_IGMP)
  48 #define PIM_IF_DO_IGMP_LISTEN_ALLROUTERS(options) ((options) |= PIM_IF_MASK_IGMP_LISTEN_ALLROUTERS)
  49 #define PIM_IF_DO_PIM_CAN_DISABLE_JOIN_SUPRESSION(options) ((options) |= PIM_IF_MASK_PIM_CAN_DISABLE_JOIN_SUPRESSION)
  50
  51 #define PIM_IF_DONT_PIM(options) ((options) &= ~PIM_IF_MASK_PIM)
  52 #define PIM_IF_DONT_IGMP(options) ((options) &= ~PIM_IF_MASK_IGMP)
  53 #define PIM_IF_DONT_IGMP_LISTEN_ALLROUTERS(options) ((options) &= ~PIM_IF_MASK_IGMP_LISTEN_ALLROUTERS)
  54 #define PIM_IF_DONT_PIM_CAN_DISABLE_JOIN_SUPRESSION(options) ((options) &= ~PIM_IF_MASK_PIM_CAN_DISABLE_JOIN_SUPRESSION)
  55
  56 #define PIM_I_am_DR(pim_ifp) (pim_ifp)->pim_dr_addr.s_addr == (pim_ifp)->primary_address.s_addr
  57
  58 struct pim_iface_upstream_switch {
  59         struct in_addr address;
  60         struct list *us;
  61 };
  62
  63 enum pim_secondary_addr_flags {
  64         PIM_SEC_ADDRF_NONE = 0,
  65         PIM_SEC_ADDRF_STALE = (1 << 0)
  66 };
  67
  68 struct pim_secondary_addr {
  69         struct prefix addr;
  70         enum pim_secondary_addr_flags flags;
  71 };
  72
  73 struct pim_interface {
  74         uint32_t options; /* bit vector */
  75         ifindex_t mroute_vif_index;
  76         struct in_addr primary_address; /* remember addr to detect change */
  77         struct list *sec_addr_list;     /* list of struct pim_secondary_addr */
  78         struct in_addr update_source;   /* user can statically set the primary
  79                                          * address of the interface */
  80
  81         int igmp_version;                      /* IGMP version */
  82         int igmp_default_robustness_variable;  /* IGMPv3 QRV */
  83         int igmp_default_query_interval;       /* IGMPv3 secs between general
  84                                                   queries */
  85         int igmp_query_max_response_time_dsec; /* IGMPv3 Max Response Time in
  86                                                   dsecs for general queries */
  87         int igmp_specific_query_max_response_time_dsec; /* IGMPv3 Max Response
  88                                                            Time in dsecs for
  89                                                            specific queries */
  90         struct list *igmp_socket_list; /* list of struct igmp_sock */
  91         struct list *igmp_join_list;   /* list of struct igmp_join */
  92
  93         int pim_sock_fd;                /* PIM socket file descriptor */
  94         struct thread *t_pim_sock_read; /* thread for reading PIM socket */
  95         int64_t pim_sock_creation;      /* timestamp of PIM socket creation */
  96
  97         struct thread *t_pim_hello_timer;
  98         int pim_hello_period;
  99         int pim_default_holdtime;
 100         int pim_triggered_hello_delay;
 101         uint32_t pim_generation_id;
 102         uint16_t pim_propagation_delay_msec; /* config */
 103         uint16_t pim_override_interval_msec; /* config */
 104         struct list *pim_neighbor_list;      /* list of struct pim_neighbor */
 105         struct list *upstream_switch_list;
 106         struct list *pim_ifchannel_list; /* list of struct pim_ifchannel */
 107         struct hash *pim_ifchannel_hash;
 108
 109         /* neighbors without lan_delay */
 110         int pim_number_of_nonlandelay_neighbors;
 111         uint16_t pim_neighbors_highest_propagation_delay_msec;
 112         uint16_t pim_neighbors_highest_override_interval_msec;
 113
 114         /* DR Election */
 115         int64_t pim_dr_election_last; /* timestamp */
 116         int pim_dr_election_count;
 117         int pim_dr_election_changes;
 118         struct in_addr pim_dr_addr;
 119         uint32_t pim_dr_priority;         /* config */
 120         int pim_dr_num_nondrpri_neighbors; /* neighbors without dr_pri */
 121
 122         int64_t pim_ifstat_start; /* start timestamp for stats */
 123         uint32_t pim_ifstat_hello_sent;
 124         uint32_t pim_ifstat_hello_sendfail;
 125         uint32_t pim_ifstat_hello_recv;
 126         uint32_t pim_ifstat_hello_recvfail;
 127         uint32_t pim_ifstat_join_recv;
 128         uint32_t pim_ifstat_join_send;
 129         uint32_t pim_ifstat_prune_recv;
 130         uint32_t pim_ifstat_prune_send;
 131         uint32_t pim_ifstat_reg_recv;
 132         uint32_t pim_ifstat_reg_send;
 133         uint32_t pim_ifstat_reg_stop_recv;
 134         uint32_t pim_ifstat_reg_stop_send;
 135         uint32_t pim_ifstat_assert_recv;
 136         uint32_t pim_ifstat_assert_send;
 137         struct bfd_info *bfd_info;
 138 };
 139
 140 extern struct interface *pim_regiface;
 141 extern struct list *pim_ifchannel_list;
 142 /*
 143   if default_holdtime is set (>= 0), use it;
 144   otherwise default_holdtime is 3.5 * hello_period
 145  */
 146 #define PIM_IF_DEFAULT_HOLDTIME(pim_ifp)                                       \
 147         (((pim_ifp)->pim_default_holdtime < 0)                                 \
 148                  ? ((pim_ifp)->pim_hello_period * 7 / 2)                       \
 149                  : ((pim_ifp)->pim_default_holdtime))
 150
 151 void pim_if_init(void);
 152 void pim_if_terminate(void);
 153
 154 struct pim_interface *pim_if_new(struct interface *ifp, int igmp, int pim);
 155 void pim_if_delete(struct interface *ifp);
 156 void pim_if_addr_add(struct connected *ifc);
 157 void pim_if_addr_del(struct connected *ifc, int force_prim_as_any);
 158 void pim_if_addr_add_all(struct interface *ifp);
 159 void pim_if_addr_del_all(struct interface *ifp);
 160 void pim_if_addr_del_all_igmp(struct interface *ifp);
 161 void pim_if_addr_del_all_pim(struct interface *ifp);
 162
 163 struct interface *pim_if_lookup_address_vrf(struct in_addr src,
 164                                             vrf_id_t vrf_id);
 165
 166 int pim_if_add_vif(struct interface *ifp);
 167 int pim_if_del_vif(struct interface *ifp);
 168 void pim_if_add_vif_all(void);
 169 void pim_if_del_vif_all(void);
 170
 171 struct interface *pim_if_find_by_vif_index(ifindex_t vif_index);
 172 int pim_if_find_vifindex_by_ifindex(ifindex_t ifindex);
 173
 174 int pim_if_lan_delay_enabled(struct interface *ifp);
 175 uint16_t pim_if_effective_propagation_delay_msec(struct interface *ifp);
 176 uint16_t pim_if_effective_override_interval_msec(struct interface *ifp);
 177 uint16_t pim_if_jp_override_interval_msec(struct interface *ifp);
 178 struct pim_neighbor *pim_if_find_neighbor(struct interface *ifp,
 179                                           struct in_addr addr);
 180
 181 long pim_if_t_suppressed_msec(struct interface *ifp);
 182 int pim_if_t_override_msec(struct interface *ifp);
 183
 184 struct in_addr pim_find_primary_addr(struct interface *ifp);
 185
 186 int pim_if_igmp_join_add(struct interface *ifp, struct in_addr group_addr,
 187                          struct in_addr source_addr);
 188 int pim_if_igmp_join_del(struct interface *ifp, struct in_addr group_addr,
 189                          struct in_addr source_addr);
 190
 191 void pim_if_update_could_assert(struct interface *ifp);
 192
 193 void pim_if_assert_on_neighbor_down(struct interface *ifp,
 194                                     struct in_addr neigh_addr);
 195
 196 void pim_if_rpf_interface_changed(struct interface *old_rpf_ifp,
 197                                   struct pim_upstream *up);
 198
 199 void pim_if_update_join_desired(struct pim_interface *pim_ifp);
 200
 201 void pim_if_update_assert_tracking_desired(struct interface *ifp);
 202
 203 void pim_if_create_pimreg(void);
 204
 205 int pim_if_connected_to_source(struct interface *ifp, struct in_addr src);
 206 int pim_update_source_set(struct interface *ifp, struct in_addr source);
 207
 208 #endif /* PIM_IFACE_H */