pimd/pim_upstream.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_UPSTREAM_H
  21 #define PIM_UPSTREAM_H
  22
  23 #include <zebra.h>
  24 #include <prefix.h>
  25 #include "plist.h"
  26
  27 #include "pim_rpf.h"
  28 #include "pim_str.h"
  29 #include "pim_ifchannel.h"
  30
  31 #define PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED         (1 << 0)
  32 #define PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED (1 << 1)
  33 #define PIM_UPSTREAM_FLAG_MASK_FHR                     (1 << 2)
  34 #define PIM_UPSTREAM_FLAG_MASK_SRC_IGMP                (1 << 3)
  35 #define PIM_UPSTREAM_FLAG_MASK_SRC_PIM                 (1 << 4)
  36 #define PIM_UPSTREAM_FLAG_MASK_SRC_STREAM              (1 << 5)
  37 #define PIM_UPSTREAM_FLAG_MASK_SRC_MSDP                (1 << 6)
  38 #define PIM_UPSTREAM_FLAG_MASK_SEND_SG_RPT_PRUNE       (1 << 7)
  39 #define PIM_UPSTREAM_FLAG_MASK_SRC_LHR                 (1 << 8)
  40 /* In the case of pim vxlan we prime the pump by registering the
  41  * vxlan source and keeping the SPT (FHR-RP) alive by sending periodic
  42  * NULL registers. So we need to prevent KAT expiry because of the
  43  * lack of BUM traffic.
  44  */
  45 #define PIM_UPSTREAM_FLAG_MASK_DISABLE_KAT_EXPIRY      (1 << 9)
  46 /* for pim vxlan we need to pin the IIF to lo or MLAG-ISL on the
  47  * originating VTEP. This flag allows that by setting IIF to the
  48  * value specified and preventing next-hop-tracking on the entry
  49  */
  50 #define PIM_UPSTREAM_FLAG_MASK_STATIC_IIF              (1 << 10)
  51 #define PIM_UPSTREAM_FLAG_MASK_ALLOW_IIF_IN_OIL        (1 << 11)
  52 /* Disable pimreg encasulation for a flow */
  53 #define PIM_UPSTREAM_FLAG_MASK_NO_PIMREG_DATA          (1 << 12)
  54 /* For some MDTs we need to register the router as a source even
  55  * if the not DR or directly connected on the IIF. This is typically
  56  * needed on a VxLAN-AA (MLAG) setup.
  57  */
  58 #define PIM_UPSTREAM_FLAG_MASK_FORCE_PIMREG            (1 << 13)
  59 /* VxLAN origination mroute - SG was registered by EVPN where S is the
  60  * local VTEP IP and G is the BUM multicast group address
  61  */
  62 #define PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_ORIG          (1 << 14)
  63 /* VxLAN termination mroute - *G entry where G is the BUM multicast group
  64  * address
  65  */
  66 #define PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM          (1 << 15)
  67 /* MLAG mroute - synced to the MLAG peer and subject to DF (designated
  68  * forwarder) election
  69  */
  70 #define PIM_UPSTREAM_FLAG_MASK_MLAG_VXLAN              (1 << 16)
  71 /* MLAG mroute that lost the DF election with peer and is installed in
  72  * a dormant state i.e. MLAG OIFs are removed from the MFC.
  73  * In most cases the OIL is empty (but not not always) simply
  74  * blackholing the traffic pulled down to the LHR.
  75  */
  76 #define PIM_UPSTREAM_FLAG_MASK_MLAG_NON_DF             (1 << 17)
  77 /* MLAG mroute rxed from the peer MLAG switch */
  78 #define PIM_UPSTREAM_FLAG_MASK_MLAG_PEER               (1 << 18)
  79 /*
  80  * We are creating a non-joined upstream data structure
  81  * for this S,G as that we want to have a channel oil
  82  * associated with an upstream
  83  */
  84 #define PIM_UPSTREAM_FLAG_MASK_SRC_NOCACHE             (1 << 19)
  85 /* By default as SG entry will use the SPT for forwarding traffic
  86  * unless it was setup as a result of a Prune(S,G,rpt) from a
  87  * downstream router and has JoinDesired(S,G) as False.
  88  * This flag is only relevant for (S,G) entries.
  89  */
  90 #define PIM_UPSTREAM_FLAG_MASK_USE_RPT                 (1 << 20)
  91 /* PIM Syncs upstream entries to peer Nodes via MLAG in 2 cases.
  92  * one is to support plain PIM Redundancy and another one is to support
  93  * PIM REdundancy.
  94  */
  95 #define PIM_UPSTREAM_FLAG_MASK_MLAG_INTERFACE          (1 << 21)
  96
  97
  98 #define PIM_UPSTREAM_FLAG_ALL 0xFFFFFFFF
  99
 100 #define PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED)
 101 #define PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED_UPDATED(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED)
 102 #define PIM_UPSTREAM_FLAG_TEST_FHR(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_FHR)
 103 #define PIM_UPSTREAM_FLAG_TEST_SRC_IGMP(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_IGMP)
 104 #define PIM_UPSTREAM_FLAG_TEST_SRC_PIM(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_PIM)
 105 #define PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_STREAM)
 106 #define PIM_UPSTREAM_FLAG_TEST_SRC_MSDP(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_MSDP)
 107 #define PIM_UPSTREAM_FLAG_TEST_SEND_SG_RPT_PRUNE(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SEND_SG_RPT_PRUNE)
 108 #define PIM_UPSTREAM_FLAG_TEST_SRC_LHR(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_LHR)
 109 #define PIM_UPSTREAM_FLAG_TEST_DISABLE_KAT_EXPIRY(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_DISABLE_KAT_EXPIRY)
 110 #define PIM_UPSTREAM_FLAG_TEST_STATIC_IIF(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_STATIC_IIF)
 111 #define PIM_UPSTREAM_FLAG_TEST_ALLOW_IIF_IN_OIL(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_ALLOW_IIF_IN_OIL)
 112 #define PIM_UPSTREAM_FLAG_TEST_NO_PIMREG_DATA(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_NO_PIMREG_DATA)
 113 #define PIM_UPSTREAM_FLAG_TEST_FORCE_PIMREG(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_FORCE_PIMREG)
 114 #define PIM_UPSTREAM_FLAG_TEST_SRC_VXLAN_ORIG(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_ORIG)
 115 #define PIM_UPSTREAM_FLAG_TEST_SRC_VXLAN_TERM(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM)
 116 #define PIM_UPSTREAM_FLAG_TEST_SRC_VXLAN(flags) ((flags) & (PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_ORIG | PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM))
 117 #define PIM_UPSTREAM_FLAG_TEST_MLAG_VXLAN(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_MLAG_VXLAN)
 118 #define PIM_UPSTREAM_FLAG_TEST_MLAG_NON_DF(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_MLAG_NON_DF)
 119 #define PIM_UPSTREAM_FLAG_TEST_MLAG_PEER(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_MLAG_PEER)
 120 #define PIM_UPSTREAM_FLAG_TEST_SRC_NOCACHE(flags) ((flags) &PIM_UPSTREAM_FLAG_MASK_SRC_NOCACHE)
 121 #define PIM_UPSTREAM_FLAG_TEST_USE_RPT(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_USE_RPT)
 122 #define PIM_UPSTREAM_FLAG_TEST_CAN_BE_LHR(flags) ((flags) & (PIM_UPSTREAM_FLAG_MASK_SRC_IGMP | PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM))
 123 #define PIM_UPSTREAM_FLAG_TEST_MLAG_INTERFACE(flags) ((flags)&PIM_UPSTREAM_FLAG_MASK_MLAG_INTERFACE)
 124
 125 #define PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED)
 126 #define PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED_UPDATED(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED)
 127 #define PIM_UPSTREAM_FLAG_SET_FHR(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_FHR)
 128 #define PIM_UPSTREAM_FLAG_SET_SRC_IGMP(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_IGMP)
 129 #define PIM_UPSTREAM_FLAG_SET_SRC_PIM(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_PIM)
 130 #define PIM_UPSTREAM_FLAG_SET_SRC_STREAM(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_STREAM)
 131 #define PIM_UPSTREAM_FLAG_SET_SRC_MSDP(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_MSDP)
 132 #define PIM_UPSTREAM_FLAG_SET_SEND_SG_RPT_PRUNE(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SEND_SG_RPT_PRUNE)
 133 #define PIM_UPSTREAM_FLAG_SET_SRC_LHR(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_LHR)
 134 #define PIM_UPSTREAM_FLAG_SET_DISABLE_KAT_EXPIRY(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_DISABLE_KAT_EXPIRY)
 135 #define PIM_UPSTREAM_FLAG_SET_STATIC_IIF(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_STATIC_IIF)
 136 #define PIM_UPSTREAM_FLAG_SET_ALLOW_IIF_IN_OIL(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_ALLOW_IIF_IN_OIL)
 137 #define PIM_UPSTREAM_FLAG_SET_NO_PIMREG_DATA(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_NO_PIMREG_DATA)
 138 #define PIM_UPSTREAM_FLAG_SET_FORCE_PIMREG(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_FORCE_PIMREG)
 139 #define PIM_UPSTREAM_FLAG_SET_SRC_VXLAN_ORIG(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_ORIG)
 140 #define PIM_UPSTREAM_FLAG_SET_SRC_VXLAN_TERM(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM)
 141 #define PIM_UPSTREAM_FLAG_SET_MLAG_VXLAN(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_MLAG_VXLAN)
 142 #define PIM_UPSTREAM_FLAG_SET_MLAG_NON_DF(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_MLAG_NON_DF)
 143 #define PIM_UPSTREAM_FLAG_SET_MLAG_PEER(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_MLAG_PEER)
 144 #define PIM_UPSTREAM_FLAG_SET_USE_RPT(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_USE_RPT)
 145 #define PIM_UPSTREAM_FLAG_SET_MLAG_INTERFACE(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_MLAG_INTERFACE)
 146
 147 #define PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED)
 148 #define PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED_UPDATED(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED)
 149 #define PIM_UPSTREAM_FLAG_UNSET_FHR(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_FHR)
 150 #define PIM_UPSTREAM_FLAG_UNSET_SRC_IGMP(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_IGMP)
 151 #define PIM_UPSTREAM_FLAG_UNSET_SRC_PIM(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_PIM)
 152 #define PIM_UPSTREAM_FLAG_UNSET_SRC_STREAM(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_STREAM)
 153 #define PIM_UPSTREAM_FLAG_UNSET_SRC_MSDP(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_MSDP)
 154 #define PIM_UPSTREAM_FLAG_UNSET_SEND_SG_RPT_PRUNE(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SEND_SG_RPT_PRUNE)
 155 #define PIM_UPSTREAM_FLAG_UNSET_SRC_LHR(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_LHR)
 156 #define PIM_UPSTREAM_FLAG_UNSET_DISABLE_KAT_EXPIRY(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_DISABLE_KAT_EXPIRY)
 157 #define PIM_UPSTREAM_FLAG_UNSET_STATIC_IIF(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_STATIC_IIF)
 158 #define PIM_UPSTREAM_FLAG_UNSET_ALLOW_IIF_IN_OIL(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_ALLOW_IIF_IN_OIL)
 159 #define PIM_UPSTREAM_FLAG_UNSET_NO_PIMREG_DATA(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_NO_PIMREG_DATA)
 160 #define PIM_UPSTREAM_FLAG_UNSET_FORCE_PIMREG(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_FORCE_PIMREG)
 161 #define PIM_UPSTREAM_FLAG_UNSET_SRC_VXLAN_ORIG(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_ORIG)
 162 #define PIM_UPSTREAM_FLAG_UNSET_SRC_VXLAN_TERM(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM)
 163 #define PIM_UPSTREAM_FLAG_UNSET_MLAG_VXLAN(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_MLAG_VXLAN)
 164 #define PIM_UPSTREAM_FLAG_UNSET_MLAG_NON_DF(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_MLAG_NON_DF)
 165 #define PIM_UPSTREAM_FLAG_UNSET_MLAG_PEER(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_MLAG_PEER)
 166 #define PIM_UPSTREAM_FLAG_UNSET_SRC_NOCACHE(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_NOCACHE)
 167 #define PIM_UPSTREAM_FLAG_UNSET_USE_RPT(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_USE_RPT)
 168 #define PIM_UPSTREAM_FLAG_UNSET_MLAG_INTERFACE(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_MLAG_INTERFACE)
 169
 170 /* The RPF cost is incremented by 10 if the RPF interface is the peerlink-rif.
 171  * This is used to force the MLAG switch with the lowest cost to the RPF
 172  * to become the MLAG DF.
 173  */
 174 #define PIM_UPSTREAM_MLAG_PEERLINK_PLUS_METRIC 10
 175
 176 enum pim_upstream_state {
 177         PIM_UPSTREAM_NOTJOINED,
 178         PIM_UPSTREAM_JOINED,
 179 };
 180
 181 enum pim_reg_state {
 182         PIM_REG_NOINFO,
 183         PIM_REG_JOIN,
 184         PIM_REG_JOIN_PENDING,
 185         PIM_REG_PRUNE,
 186 };
 187
 188 enum pim_upstream_sptbit {
 189         PIM_UPSTREAM_SPTBIT_FALSE,
 190         PIM_UPSTREAM_SPTBIT_TRUE
 191 };
 192
 193 struct pim_up_mlag {
 194         /* MRIB.metric(S) from the peer switch. This is used for DF election
 195          * and switch with the lowest cost wins.
 196          */
 197         uint32_t peer_mrib_metric;
 198 };
 199
 200 PREDECL_RBTREE_UNIQ(rb_pim_upstream);
 201 /*
 202   Upstream (S,G) channel in Joined state
 203   (S,G) in the "Not Joined" state is not represented
 204   See RFC 4601: 4.5.7.  Sending (S,G) Join/Prune Message
 205
 206   upstream_addr : Who we are talking to.
 207   For (*, G), upstream_addr is RP address or INADDR_ANY(if RP not configured)
 208   For (S, G), upstream_addr is source address
 209
 210   rpf: contains the nexthop information to whom we are talking to.
 211
 212   join_state: JOINED/NOTJOINED
 213
 214   In the case when FRR receives IGMP/PIM (*, G) join for group G and RP is not
 215   configured, then create a pim_upstream with the below information.
 216   pim_upstream->upstream address: INADDR_ANY
 217   pim_upstream->rpf: Unknown
 218   pim_upstream->state: NOTJOINED
 219
 220   When a new RP gets configured for G, find the corresponding pim upstream (*,G)
 221   entries and update the upstream address as new RP address if it the better one
 222   for the group G.
 223
 224   When RP becomes reachable, populate the nexthop information in
 225   pim_upstream->rpf and update the state to JOINED.
 226
 227 */
 228 struct pim_upstream {
 229         struct pim_instance *pim;
 230         struct rb_pim_upstream_item upstream_rb;
 231         struct pim_upstream *parent;
 232         struct in_addr upstream_addr;     /* Who we are talking to */
 233         struct in_addr upstream_register; /*Who we received a register from*/
 234         struct prefix_sg sg;              /* (S,G) group key */
 235         char sg_str[PIM_SG_LEN];
 236         uint32_t flags;
 237         struct channel_oil *channel_oil;
 238         struct list *sources;
 239         struct list *ifchannels;
 240         /* Counter for Dual active ifchannels*/
 241         uint32_t dualactive_ifchannel_count;
 242
 243         enum pim_upstream_state join_state;
 244         enum pim_reg_state reg_state;
 245         enum pim_upstream_sptbit sptbit;
 246
 247         int ref_count;
 248
 249         struct pim_rpf rpf;
 250
 251         struct pim_up_mlag mlag;
 252
 253         struct thread *t_join_timer;
 254
 255         /*
 256          * RST(S,G)
 257          */
 258         struct thread *t_rs_timer;
 259 #define PIM_REGISTER_SUPPRESSION_PERIOD (60)
 260 #define PIM_REGISTER_PROBE_PERIOD        (5)
 261
 262         /*
 263          * KAT(S,G)
 264          */
 265         struct thread *t_ka_timer;
 266 #define PIM_KEEPALIVE_PERIOD  (210)
 267 #define PIM_RP_KEEPALIVE_PERIOD                                                \
 268         (3 * router->register_suppress_time + router->register_probe_time)
 269
 270         /* on the RP we restart a timer to indicate if registers are being rxed
 271          * for
 272          * SG. This is needed by MSDP to determine its local SA cache */
 273         struct thread *t_msdp_reg_timer;
 274 #define PIM_MSDP_REG_RXED_PERIOD (3 * (1.5 * router->register_suppress_time))
 275
 276         int64_t state_transition; /* Record current state uptime */
 277 };
 278
 279 static inline bool pim_upstream_is_kat_running(struct pim_upstream *up)
 280 {
 281         return (up->t_ka_timer != NULL);
 282 }
 283
 284 static inline bool pim_up_mlag_is_local(struct pim_upstream *up)
 285 {
 286         /* XXX: extend this to also return true if the channel-oil has
 287          * any AA devices
 288          */
 289         return (up->flags & (PIM_UPSTREAM_FLAG_MASK_MLAG_VXLAN
 290                              | PIM_UPSTREAM_FLAG_MASK_MLAG_INTERFACE));
 291 }
 292
 293 struct pim_upstream *pim_upstream_find(struct pim_instance *pim,
 294                                        struct prefix_sg *sg);
 295 struct pim_upstream *pim_upstream_find_or_add(struct prefix_sg *sg,
 296                                               struct interface *ifp, int flags,
 297                                               const char *name);
 298 struct pim_upstream *pim_upstream_add(struct pim_instance *pim,
 299                                       struct prefix_sg *sg,
 300                                       struct interface *ifp, int flags,
 301                                       const char *name,
 302                                       struct pim_ifchannel *ch);
 303 void pim_upstream_ref(struct pim_upstream *up,
 304                 int flags, const char *name);
 305 struct pim_upstream *pim_upstream_del(struct pim_instance *pim,
 306                                       struct pim_upstream *up,
 307                                       const char *name);
 308
 309 bool pim_upstream_evaluate_join_desired(struct pim_instance *pim,
 310                                         struct pim_upstream *up);
 311 int pim_upstream_evaluate_join_desired_interface(struct pim_upstream *up,
 312                                                  struct pim_ifchannel *ch,
 313                                                  struct pim_ifchannel *starch);
 314 int pim_upstream_eval_inherit_if(struct pim_upstream *up,
 315                                                  struct pim_ifchannel *ch,
 316                                                  struct pim_ifchannel *starch);
 317 void pim_upstream_update_join_desired(struct pim_instance *pim,
 318                                       struct pim_upstream *up);
 319
 320 void pim_update_suppress_timers(uint32_t suppress_time);
 321 void pim_upstream_join_suppress(struct pim_upstream *up,
 322                                 struct in_addr rpf_addr, int holdtime);
 323
 324 void pim_upstream_join_timer_decrease_to_t_override(const char *debug_label,
 325                                                     struct pim_upstream *up);
 326
 327 void pim_upstream_join_timer_restart(struct pim_upstream *up,
 328                                      struct pim_rpf *old);
 329 void pim_upstream_rpf_genid_changed(struct pim_instance *pim,
 330                                     struct in_addr neigh_addr);
 331 void pim_upstream_rpf_interface_changed(struct pim_upstream *up,
 332                                         struct interface *old_rpf_ifp);
 333
 334 void pim_upstream_update_could_assert(struct pim_upstream *up);
 335 void pim_upstream_update_my_assert_metric(struct pim_upstream *up);
 336
 337 void pim_upstream_keep_alive_timer_start(struct pim_upstream *up,
 338                                          uint32_t time);
 339
 340 int pim_upstream_switch_to_spt_desired_on_rp(struct pim_instance *pim,
 341                                        struct prefix_sg *sg);
 342 #define SwitchToSptDesiredOnRp(pim, sg) pim_upstream_switch_to_spt_desired_on_rp (pim, sg)
 343 int pim_upstream_is_sg_rpt(struct pim_upstream *up);
 344
 345 void pim_upstream_set_sptbit(struct pim_upstream *up,
 346                              struct interface *incoming);
 347
 348 void pim_upstream_start_register_stop_timer(struct pim_upstream *up,
 349                                             int null_register);
 350
 351 void pim_upstream_send_join(struct pim_upstream *up);
 352
 353 void pim_upstream_switch(struct pim_instance *pim, struct pim_upstream *up,
 354                          enum pim_upstream_state new_state);
 355
 356 const char *pim_upstream_state2str(enum pim_upstream_state join_state);
 357 #define PIM_REG_STATE_STR_LEN 12
 358 const char *pim_reg_state2str(enum pim_reg_state state, char *state_str,
 359                               size_t state_str_len);
 360
 361 int pim_upstream_inherited_olist_decide(struct pim_instance *pim,
 362                                         struct pim_upstream *up);
 363 int pim_upstream_inherited_olist(struct pim_instance *pim,
 364                                  struct pim_upstream *up);
 365 int pim_upstream_empty_inherited_olist(struct pim_upstream *up);
 366
 367 void pim_upstream_find_new_rpf(struct pim_instance *pim);
 368 void pim_upstream_msdp_reg_timer_start(struct pim_upstream *up);
 369
 370 void pim_upstream_init(struct pim_instance *pim);
 371 void pim_upstream_terminate(struct pim_instance *pim);
 372
 373 void join_timer_start(struct pim_upstream *up);
 374 int pim_upstream_compare(const struct pim_upstream *up1,
 375                          const struct pim_upstream *up2);
 376 DECLARE_RBTREE_UNIQ(rb_pim_upstream, struct pim_upstream, upstream_rb,
 377                     pim_upstream_compare);
 378
 379 void pim_upstream_register_reevaluate(struct pim_instance *pim);
 380
 381 void pim_upstream_add_lhr_star_pimreg(struct pim_instance *pim);
 382 void pim_upstream_remove_lhr_star_pimreg(struct pim_instance *pim,
 383                                          const char *nlist);
 384
 385 void pim_upstream_spt_prefix_list_update(struct pim_instance *pim,
 386                                          struct prefix_list *pl);
 387
 388 unsigned int pim_upstream_hash_key(const void *arg);
 389 bool pim_upstream_equal(const void *arg1, const void *arg2);
 390 struct pim_upstream *pim_upstream_keep_alive_timer_proc(
 391                 struct pim_upstream *up);
 392 void pim_upstream_fill_static_iif(struct pim_upstream *up,
 393                                 struct interface *incoming);
 394 void pim_upstream_update_use_rpt(struct pim_upstream *up,
 395                 bool update_mroute);
 396 uint32_t pim_up_mlag_local_cost(struct pim_upstream *up);
 397 uint32_t pim_up_mlag_peer_cost(struct pim_upstream *up);
 398 void pim_upstream_reeval_use_rpt(struct pim_instance *pim);
 399 int pim_upstream_could_register(struct pim_upstream *up);
 400 #endif /* PIM_UPSTREAM_H */