diff options
Diffstat (limited to 'bgpd')
| -rw-r--r-- | bgpd/ChangeLog | 21 | ||||
| -rw-r--r-- | bgpd/bgp_damp.c | 19 | ||||
| -rw-r--r-- | bgpd/bgp_nexthop.c | 4 | ||||
| -rw-r--r-- | bgpd/bgp_route.c | 219 | ||||
| -rw-r--r-- | bgpd/bgp_route.h | 13 | ||||
| -rw-r--r-- | bgpd/bgpd.h | 7 |
6 files changed, 157 insertions, 126 deletions
diff --git a/bgpd/ChangeLog b/bgpd/ChangeLog index cb07c58d..7de02cf5 100644 --- a/bgpd/ChangeLog +++ b/bgpd/ChangeLog @@ -1,3 +1,24 @@ +2006-09-06 Paul Jakma <paul.jakma@sun.com> + + * (general) Squash any and all prefix-count issues by + abstracting route flag changes, and maintaining count as and + when flags are modified (rather than relying on explicit + modifications of count being sprinkled in just the right + places throughout the code). + * bgp_route.c: (bgp_pcount_{dec,inc}rement) removed. + (bgp_pcount_adjust) new, update prefix count as + needed for a given route. + (bgp_info_{uns,s}et_flag) set/unset a BGP_INFO route status + flag, calling previous function when appropriate. + (general) Update all set/unsets of flags to use previous. + Remove pcount_{dec,inc}rement calls. + No need to unset BGP_INFO_VALID in places where + bgp_info_delete is called, it does that anyway. + * bgp_{damp,nexthop}.c: Update to use bgp_info_{un,}set_flag. + * bgp_route.h: Export bgp_info_{un,}set_flag. + Add a 'meta' BGP_INFO flag, BGP_INFO_UNUSEABLE. + Move BGP_INFO_HOLDDOWN macro to here from bgpd.h + 2006-09-03 Paul Jakma <paul.jakma@sun.com> * bgp_route.c: Add 'show ... bgp ... <neighbour> prefix-count' diff --git a/bgpd/bgp_damp.c b/bgpd/bgp_damp.c index a2163a4f..8ba39b65 100644 --- a/bgpd/bgp_damp.c +++ b/bgpd/bgp_damp.c @@ -148,12 +148,12 @@ bgp_reuse_timer (struct thread *t) if (bdi->penalty < damp->reuse_limit) { /* Reuse the route. */ - UNSET_FLAG (bdi->binfo->flags, BGP_INFO_DAMPED); + bgp_info_unset_flag (bdi->rn, bdi->binfo, BGP_INFO_DAMPED); bdi->suppress_time = 0; if (bdi->lastrecord == BGP_RECORD_UPDATE) { - UNSET_FLAG (bdi->binfo->flags, BGP_INFO_HISTORY); + bgp_info_unset_flag (bdi->rn, bdi->binfo, BGP_INFO_HISTORY); bgp_aggregate_increment (bgp, &bdi->rn->p, bdi->binfo, bdi->afi, bdi->safi); bgp_process (bgp, bdi->rn, bdi->afi, bdi->safi); @@ -223,11 +223,13 @@ bgp_damp_withdraw (struct bgp_info *binfo, struct bgp_node *rn, bdi->flap++; } + assert ((rn == bdi->rn) && (binfo == bdi->binfo)); + bdi->lastrecord = BGP_RECORD_WITHDRAW; bdi->t_updated = t_now; /* Make this route as historical status. */ - SET_FLAG (binfo->flags, BGP_INFO_HISTORY); + bgp_info_set_flag (rn, binfo, BGP_INFO_HISTORY); /* Remove the route from a reuse list if it is on one. */ if (CHECK_FLAG (bdi->binfo->flags, BGP_INFO_DAMPED)) @@ -245,7 +247,7 @@ bgp_damp_withdraw (struct bgp_info *binfo, struct bgp_node *rn, insert into reuse_list. */ if (bdi->penalty >= damp->suppress_value) { - SET_FLAG (bdi->binfo->flags, BGP_INFO_DAMPED); + bgp_info_set_flag (rn, binfo, BGP_INFO_DAMPED); bdi->suppress_time = t_now; BGP_DAMP_LIST_DEL (damp, bdi); bgp_reuse_list_add (bdi); @@ -267,7 +269,7 @@ bgp_damp_update (struct bgp_info *binfo, struct bgp_node *rn, return BGP_DAMP_USED; t_now = time (NULL); - UNSET_FLAG (binfo->flags, BGP_INFO_HISTORY); + bgp_info_unset_flag (rn, binfo, BGP_INFO_HISTORY); bdi->lastrecord = BGP_RECORD_UPDATE; bdi->penalty = bgp_damp_decay (t_now - bdi->t_updated, bdi->penalty); @@ -278,7 +280,7 @@ bgp_damp_update (struct bgp_info *binfo, struct bgp_node *rn, else if (CHECK_FLAG (bdi->binfo->flags, BGP_INFO_DAMPED) && (bdi->penalty < damp->reuse_limit) ) { - UNSET_FLAG (bdi->binfo->flags, BGP_INFO_DAMPED); + bgp_info_unset_flag (rn, binfo, BGP_INFO_DAMPED); bgp_reuse_list_delete (bdi); BGP_DAMP_LIST_ADD (damp, bdi); bdi->suppress_time = 0; @@ -311,7 +313,7 @@ bgp_damp_scan (struct bgp_info *binfo, afi_t afi, safi_t safi) if (t_diff >= damp->max_suppress_time) { - UNSET_FLAG (binfo->flags, BGP_INFO_DAMPED); + bgp_info_unset_flag (bdi->rn, binfo, BGP_INFO_DAMPED); bgp_reuse_list_delete (bdi); BGP_DAMP_LIST_ADD (damp, bdi); bdi->penalty = damp->reuse_limit; @@ -358,8 +360,7 @@ bgp_damp_info_free (struct bgp_damp_info *bdi, int withdraw) else BGP_DAMP_LIST_DEL (damp, bdi); - UNSET_FLAG (binfo->flags, BGP_INFO_DAMPED); - UNSET_FLAG (binfo->flags, BGP_INFO_HISTORY); + bgp_info_unset_flag (bdi->rn, binfo, BGP_INFO_HISTORY|BGP_INFO_DAMPED); if (bdi->lastrecord == BGP_RECORD_WITHDRAW && withdraw) bgp_info_delete (bdi->rn, binfo); diff --git a/bgpd/bgp_nexthop.c b/bgpd/bgp_nexthop.c index ea707ccb..bfc41a18 100644 --- a/bgpd/bgp_nexthop.c +++ b/bgpd/bgp_nexthop.c @@ -478,11 +478,11 @@ bgp_scan (afi_t afi, safi_t safi) { bgp_aggregate_decrement (bgp, &rn->p, bi, afi, SAFI_UNICAST); - UNSET_FLAG (bi->flags, BGP_INFO_VALID); + bgp_info_unset_flag (rn, bi, BGP_INFO_VALID); } else { - SET_FLAG (bi->flags, BGP_INFO_VALID); + bgp_info_set_flag (rn, bi, BGP_INFO_VALID); bgp_aggregate_increment (bgp, &rn->p, bi, afi, SAFI_UNICAST); } diff --git a/bgpd/bgp_route.c b/bgpd/bgp_route.c index 40534a14..ca7cbd10 100644 --- a/bgpd/bgp_route.c +++ b/bgpd/bgp_route.c @@ -187,12 +187,73 @@ bgp_info_reap (struct bgp_node *rn, struct bgp_info *ri) void bgp_info_delete (struct bgp_node *rn, struct bgp_info *ri) { - /* leave info in place for now in place for now, - * bgp_process will reap it later. */ - SET_FLAG (ri->flags, BGP_INFO_REMOVED); + bgp_info_set_flag (rn, ri, BGP_INFO_REMOVED); + /* set of previous already took care of pcount */ UNSET_FLAG (ri->flags, BGP_INFO_VALID); } +/* Adjust pcount as required */ +static void +bgp_pcount_adjust (struct bgp_node *rn, struct bgp_info *ri) +{ + /* Ignore 'pcount' for RS-client tables */ + if (rn->table->type != BGP_TABLE_MAIN + || ri->peer == ri->peer->bgp->peer_self) + return; + + if (BGP_INFO_HOLDDOWN (ri) + && CHECK_FLAG (ri->flags, BGP_INFO_COUNTED)) + { + + UNSET_FLAG (ri->flags, BGP_INFO_COUNTED); + + /* slight hack, but more robust against errors. */ + if (ri->peer->pcount[rn->table->afi][rn->table->safi]) + ri->peer->pcount[rn->table->afi][rn->table->safi]--; + else + { + zlog_warn ("%s: Asked to decrement 0 prefix count for peer %s", + __func__, ri->peer->host); + zlog_backtrace (LOG_WARNING); + zlog_warn ("%s: Please report to Quagga bugzilla", __func__); + } + } + else if (!BGP_INFO_HOLDDOWN (ri) + && !CHECK_FLAG (ri->flags, BGP_INFO_COUNTED)) + { + SET_FLAG (ri->flags, BGP_INFO_COUNTED); + ri->peer->pcount[rn->table->afi][rn->table->safi]++; + } +} + + +/* Set/unset bgp_info flags, adjusting any other state as needed. + * This is here primarily to keep prefix-count in check. + */ +void +bgp_info_set_flag (struct bgp_node *rn, struct bgp_info *ri, u_int32_t flag) +{ + SET_FLAG (ri->flags, flag); + + /* early bath if we know it's not a flag that changes useability state */ + if (!CHECK_FLAG (flag, BGP_INFO_VALID|BGP_INFO_UNUSEABLE)) + return; + + bgp_pcount_adjust (rn, ri); +} + +void +bgp_info_unset_flag (struct bgp_node *rn, struct bgp_info *ri, u_int32_t flag) +{ + UNSET_FLAG (ri->flags, flag); + + /* early bath if we know it's not a flag that changes useability state */ + if (!CHECK_FLAG (flag, BGP_INFO_VALID|BGP_INFO_UNUSEABLE)) + return; + + bgp_pcount_adjust (rn, ri); +} + /* Get MED value. If MED value is missing and "bgp bestpath missing-as-worst" is specified, treat it as the worst value. */ static u_int32_t @@ -1144,15 +1205,15 @@ bgp_best_selection (struct bgp *bgp, struct bgp_node *rn, struct bgp_info_pair * { if (bgp_info_cmp (bgp, ri2, new_select)) { - UNSET_FLAG (new_select->flags, BGP_INFO_DMED_SELECTED); + bgp_info_unset_flag (rn, new_select, BGP_INFO_DMED_SELECTED); new_select = ri2; } - SET_FLAG (ri2->flags, BGP_INFO_DMED_CHECK); + bgp_info_set_flag (rn, ri2, BGP_INFO_DMED_CHECK); } } - SET_FLAG (new_select->flags, BGP_INFO_DMED_CHECK); - SET_FLAG (new_select->flags, BGP_INFO_DMED_SELECTED); + bgp_info_set_flag (rn, new_select, BGP_INFO_DMED_CHECK); + bgp_info_set_flag (rn, new_select, BGP_INFO_DMED_SELECTED); } /* Check old selected route and new selected route. */ @@ -1178,11 +1239,11 @@ bgp_best_selection (struct bgp *bgp, struct bgp_node *rn, struct bgp_info_pair * if (bgp_flag_check (bgp, BGP_FLAG_DETERMINISTIC_MED) && (! CHECK_FLAG (ri->flags, BGP_INFO_DMED_SELECTED))) { - UNSET_FLAG (ri->flags, BGP_INFO_DMED_CHECK); + bgp_info_unset_flag (rn, ri, BGP_INFO_DMED_CHECK); continue; } - UNSET_FLAG (ri->flags, BGP_INFO_DMED_CHECK); - UNSET_FLAG (ri->flags, BGP_INFO_DMED_SELECTED); + bgp_info_unset_flag (rn, ri, BGP_INFO_DMED_CHECK); + bgp_info_unset_flag (rn, ri, BGP_INFO_DMED_SELECTED); if (bgp_info_cmp (bgp, ri, new_select)) new_select = ri; @@ -1276,11 +1337,11 @@ bgp_process_rsclient (struct work_queue *wq, void *data) continue; if (old_select) - UNSET_FLAG (old_select->flags, BGP_INFO_SELECTED); + bgp_info_unset_flag (rn, old_select, BGP_INFO_SELECTED); if (new_select) { - SET_FLAG (new_select->flags, BGP_INFO_SELECTED); - UNSET_FLAG (new_select->flags, BGP_INFO_ATTR_CHANGED); + bgp_info_set_flag (rn, new_select, BGP_INFO_SELECTED); + bgp_info_unset_flag (rn, new_select, BGP_INFO_ATTR_CHANGED); } bgp_process_announce_selected (rsclient, new_select, rn, &attr, @@ -1290,11 +1351,11 @@ bgp_process_rsclient (struct work_queue *wq, void *data) else { if (old_select) - UNSET_FLAG (old_select->flags, BGP_INFO_SELECTED); + bgp_info_unset_flag (rn, old_select, BGP_INFO_SELECTED); if (new_select) { - SET_FLAG (new_select->flags, BGP_INFO_SELECTED); - UNSET_FLAG (new_select->flags, BGP_INFO_ATTR_CHANGED); + bgp_info_set_flag (rn, new_select, BGP_INFO_SELECTED); + bgp_info_unset_flag (rn, new_select, BGP_INFO_ATTR_CHANGED); } bgp_process_announce_selected (rsclient, new_select, rn, &attr, afi, safi); @@ -1342,11 +1403,11 @@ bgp_process_main (struct work_queue *wq, void *data) } if (old_select) - UNSET_FLAG (old_select->flags, BGP_INFO_SELECTED); + bgp_info_unset_flag (rn, old_select, BGP_INFO_SELECTED); if (new_select) { - SET_FLAG (new_select->flags, BGP_INFO_SELECTED); - UNSET_FLAG (new_select->flags, BGP_INFO_ATTR_CHANGED); + bgp_info_set_flag (rn, new_select, BGP_INFO_SELECTED); + bgp_info_unset_flag (rn, new_select, BGP_INFO_ATTR_CHANGED); } @@ -1545,43 +1606,6 @@ bgp_maximum_prefix_overflow (struct peer *peer, afi_t afi, return 0; } -static void -bgp_pcount_increment (struct bgp_node *rn, struct bgp_info *ri, - afi_t afi, safi_t safi) -{ - assert (ri && rn); - - if (!CHECK_FLAG (ri->flags, BGP_INFO_COUNTED) - && rn->table->type == BGP_TABLE_MAIN) - { - SET_FLAG (ri->flags, BGP_INFO_COUNTED); - ri->peer->pcount[afi][safi]++; - } -} - -static void -bgp_pcount_decrement (struct bgp_node *rn, struct bgp_info *ri, - afi_t afi, safi_t safi) -{ - /* Ignore 'pcount' for RS-client tables */ - if (CHECK_FLAG (ri->flags, BGP_INFO_COUNTED) - && rn->table->type == BGP_TABLE_MAIN) - { - UNSET_FLAG (ri->flags, BGP_INFO_COUNTED); - - /* slight hack, but more robust against errors. */ - if (ri->peer->pcount[afi][safi]) - ri->peer->pcount[afi][safi]--; - else - { - zlog_warn ("%s: Asked to decrement 0 prefix count for peer %s", - __func__, ri->peer->host); - zlog_backtrace (LOG_WARNING); - zlog_warn ("%s: Please report to Quagga bugzilla", __func__); - } - } -} - /* Unconditionally remove the route from the RIB, without taking * damping into consideration (eg, because the session went down) */ @@ -1589,7 +1613,6 @@ static void bgp_rib_remove (struct bgp_node *rn, struct bgp_info *ri, struct peer *peer, afi_t afi, safi_t safi) { - bgp_pcount_decrement (rn, ri, afi, safi); bgp_aggregate_decrement (peer->bgp, &rn->p, ri, afi, safi); if (!CHECK_FLAG (ri->flags, BGP_INFO_HISTORY)) @@ -1612,7 +1635,6 @@ bgp_rib_withdraw (struct bgp_node *rn, struct bgp_info *ri, struct peer *peer, if ( (status = bgp_damp_withdraw (ri, rn, afi, safi, 0)) == BGP_DAMP_SUPPRESSED) { - bgp_pcount_decrement (rn, ri, afi, safi); bgp_aggregate_decrement (peer->bgp, &rn->p, ri, afi, safi); return; } @@ -1709,7 +1731,7 @@ bgp_update_rsclient (struct peer *rsclient, afi_t afi, safi_t safi, if (attrhash_cmp (ri->attr, attr_new)) { - UNSET_FLAG (ri->flags, BGP_INFO_ATTR_CHANGED); + bgp_info_unset_flag (rn, ri, BGP_INFO_ATTR_CHANGED); if (BGP_DEBUG (update, UPDATE_IN)) zlog (peer->log, LOG_DEBUG, @@ -1732,7 +1754,7 @@ bgp_update_rsclient (struct peer *rsclient, afi_t afi, safi_t safi, p->prefixlen, rsclient->host); /* The attribute is changed. */ - SET_FLAG (ri->flags, BGP_INFO_ATTR_CHANGED); + bgp_info_set_flag (rn, ri, BGP_INFO_ATTR_CHANGED); /* Update to new attribute. */ bgp_attr_unintern (ri->attr); @@ -1742,7 +1764,7 @@ bgp_update_rsclient (struct peer *rsclient, afi_t afi, safi_t safi, if (safi == SAFI_MPLS_VPN) memcpy (ri->tag, tag, 3); - SET_FLAG (ri->flags, BGP_INFO_VALID); + bgp_info_set_flag (rn, ri, BGP_INFO_VALID); /* Process change. */ bgp_process (bgp, rn, afi, safi); @@ -1772,7 +1794,7 @@ bgp_update_rsclient (struct peer *rsclient, afi_t afi, safi_t safi, if (safi == SAFI_MPLS_VPN) memcpy (new->tag, tag, 3); - SET_FLAG (new->flags, BGP_INFO_VALID); + bgp_info_set_flag (rn, new, BGP_INFO_VALID); /* Register new BGP information. */ bgp_info_add (rn, new); @@ -1953,7 +1975,7 @@ bgp_update_main (struct peer *peer, struct prefix *p, struct attr *attr, /* Same attribute comes in. */ if (attrhash_cmp (ri->attr, attr_new)) { - UNSET_FLAG (ri->flags, BGP_INFO_ATTR_CHANGED); + bgp_info_unset_flag (rn, ri, BGP_INFO_ATTR_CHANGED); if (CHECK_FLAG (bgp->af_flags[afi][safi], BGP_CONFIG_DAMPENING) && peer_sort (peer) == BGP_PEER_EBGP @@ -1965,8 +1987,6 @@ bgp_update_main (struct peer *peer, struct prefix *p, struct attr *attr, inet_ntop(p->family, &p->u.prefix, buf, SU_ADDRSTRLEN), p->prefixlen); - bgp_pcount_increment (rn, ri, afi, safi); - if (bgp_damp_update (ri, rn, afi, safi) != BGP_DAMP_SUPPRESSED) { bgp_aggregate_increment (bgp, p, ri, afi, safi); @@ -1985,8 +2005,7 @@ bgp_update_main (struct peer *peer, struct prefix *p, struct attr *attr, /* graceful restart STALE flag unset. */ if (CHECK_FLAG (ri->flags, BGP_INFO_STALE)) { - UNSET_FLAG (ri->flags, BGP_INFO_STALE); - bgp_pcount_increment (rn, ri, afi, safi); + bgp_info_unset_flag (rn, ri, BGP_INFO_STALE); bgp_process (bgp, rn, afi, safi); } } @@ -2005,15 +2024,14 @@ bgp_update_main (struct peer *peer, struct prefix *p, struct attr *attr, /* graceful restart STALE flag unset. */ if (CHECK_FLAG (ri->flags, BGP_INFO_STALE)) - UNSET_FLAG (ri->flags, BGP_INFO_STALE); + bgp_info_unset_flag (rn, ri, BGP_INFO_STALE); /* The attribute is changed. */ - SET_FLAG (ri->flags, BGP_INFO_ATTR_CHANGED); + bgp_info_set_flag (rn, ri, BGP_INFO_ATTR_CHANGED); /* implicit withdraw, decrement aggregate and pcount here. * only if update is accepted, they'll increment below. */ - bgp_pcount_decrement (rn, ri, afi, safi); bgp_aggregate_decrement (bgp, p, ri, afi, safi); /* Update bgp route dampening information. */ @@ -2055,15 +2073,14 @@ bgp_update_main (struct peer *peer, struct prefix *p, struct attr *attr, || CHECK_FLAG (peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK))) { if (bgp_nexthop_lookup (afi, peer, ri, NULL, NULL)) - SET_FLAG (ri->flags, BGP_INFO_VALID); + bgp_info_set_flag (rn, ri, BGP_INFO_VALID); else - UNSET_FLAG (ri->flags, BGP_INFO_VALID); + bgp_info_unset_flag (rn, ri, BGP_INFO_VALID); } else - SET_FLAG (ri->flags, BGP_INFO_VALID); + bgp_info_set_flag (rn, ri, BGP_INFO_VALID); /* Process change. */ - bgp_pcount_increment (rn, ri, afi, safi); bgp_aggregate_increment (bgp, p, ri, afi, safi); bgp_process (bgp, rn, afi, safi); @@ -2100,15 +2117,14 @@ bgp_update_main (struct peer *peer, struct prefix *p, struct attr *attr, || CHECK_FLAG (peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK))) { if (bgp_nexthop_lookup (afi, peer, new, NULL, NULL)) - SET_FLAG (new->flags, BGP_INFO_VALID); + bgp_info_set_flag (rn, new, BGP_INFO_VALID); else - UNSET_FLAG (new->flags, BGP_INFO_VALID); + bgp_info_unset_flag (rn, new, BGP_INFO_VALID); } else - SET_FLAG (new->flags, BGP_INFO_VALID); + bgp_info_set_flag (rn, new, BGP_INFO_VALID); /* Increment prefix */ - bgp_pcount_increment (rn, new, afi, safi); bgp_aggregate_increment (bgp, p, new, afi, safi); /* Register new BGP information. */ @@ -2475,13 +2491,8 @@ bgp_clear_route_node (struct work_queue *wq, void *data) if (CHECK_FLAG (peer->sflags, PEER_STATUS_NSF_WAIT) && peer->nsf[afi][safi] && ! CHECK_FLAG (ri->flags, BGP_INFO_STALE) - && ! CHECK_FLAG (ri->flags, BGP_INFO_HISTORY) - && ! CHECK_FLAG (ri->flags, BGP_INFO_DAMPED) - && ! CHECK_FLAG (ri->flags, BGP_INFO_REMOVED)) - { - bgp_pcount_decrement (rn, ri, afi, safi); - SET_FLAG (ri->flags, BGP_INFO_STALE); - } + && ! CHECK_FLAG (ri->flags, BGP_INFO_UNUSEABLE)) + bgp_info_set_flag (rn, ri, BGP_INFO_STALE); else bgp_rib_remove (rn, ri, peer, afi, safi); break; @@ -2911,9 +2922,8 @@ bgp_static_withdraw_rsclient (struct bgp *bgp, struct peer *rsclient, /* Withdraw static BGP route from routing table. */ if (ri) { - UNSET_FLAG (ri->flags, BGP_INFO_VALID); - bgp_process (bgp, rn, afi, safi); bgp_info_delete (rn, ri); + bgp_process (bgp, rn, afi, safi); } /* Unlock bgp_node_lookup. */ @@ -3025,7 +3035,7 @@ bgp_static_update_rsclient (struct peer *rsclient, struct prefix *p, else { /* The attribute is changed. */ - SET_FLAG (ri->flags, BGP_INFO_ATTR_CHANGED); + bgp_info_set_flag (rn, ri, BGP_INFO_ATTR_CHANGED); /* Rewrite BGP route information. */ bgp_attr_unintern (ri->attr); @@ -3132,7 +3142,7 @@ bgp_static_update_main (struct bgp *bgp, struct prefix *p, else { /* The attribute is changed. */ - SET_FLAG (ri->flags, BGP_INFO_ATTR_CHANGED); + bgp_info_set_flag (rn, ri, BGP_INFO_ATTR_CHANGED); /* Rewrite BGP route information. */ bgp_aggregate_decrement (bgp, p, ri, afi, safi); @@ -3242,9 +3252,8 @@ bgp_static_withdraw (struct bgp *bgp, struct prefix *p, afi_t afi, if (ri) { bgp_aggregate_decrement (bgp, p, ri, afi, safi); - UNSET_FLAG (ri->flags, BGP_INFO_VALID); - bgp_process (bgp, rn, afi, safi); bgp_info_delete (rn, ri); + bgp_process (bgp, rn, afi, safi); } /* Unlock bgp_node_lookup. */ @@ -3291,9 +3300,8 @@ bgp_static_withdraw_vpnv4 (struct bgp *bgp, struct prefix *p, u_int16_t afi, if (ri) { bgp_aggregate_decrement (bgp, p, ri, afi, safi); - UNSET_FLAG (ri->flags, BGP_INFO_VALID); - bgp_process (bgp, rn, afi, safi); bgp_info_delete (rn, ri); + bgp_process (bgp, rn, afi, safi); } /* Unlock bgp_node_lookup. */ @@ -4074,7 +4082,7 @@ bgp_aggregate_route (struct bgp *bgp, struct prefix *p, struct bgp_info *rinew, if (aggregate->summary_only) { ri->suppress++; - SET_FLAG (ri->flags, BGP_INFO_ATTR_CHANGED); + bgp_info_set_flag (rn, ri, BGP_INFO_ATTR_CHANGED); match++; } @@ -4277,7 +4285,7 @@ bgp_aggregate_add (struct bgp *bgp, struct prefix *p, afi_t afi, safi_t safi, if (aggregate->summary_only) { ri->suppress++; - SET_FLAG (ri->flags, BGP_INFO_ATTR_CHANGED); + bgp_info_set_flag (rn, ri, BGP_INFO_ATTR_CHANGED); match++; } /* as-set aggregate route generate origin, as path, @@ -4377,7 +4385,7 @@ bgp_aggregate_delete (struct bgp *bgp, struct prefix *p, afi_t afi, if (ri->suppress == 0) { - SET_FLAG (ri->flags, BGP_INFO_ATTR_CHANGED); + bgp_info_set_flag (rn, ri, BGP_INFO_ATTR_CHANGED); match++; } } @@ -4403,9 +4411,8 @@ bgp_aggregate_delete (struct bgp *bgp, struct prefix *p, afi_t afi, /* Withdraw static BGP route from routing table. */ if (ri) { - UNSET_FLAG (ri->flags, BGP_INFO_VALID); - bgp_process (bgp, rn, afi, safi); bgp_info_delete (rn, ri); + bgp_process (bgp, rn, afi, safi); } /* Unlock bgp_node_lookup. */ @@ -4929,7 +4936,7 @@ bgp_redistribute_add (struct prefix *p, struct in_addr *nexthop, else { /* The attribute is changed. */ - SET_FLAG (bi->flags, BGP_INFO_ATTR_CHANGED); + bgp_info_set_flag (bn, bi, BGP_INFO_ATTR_CHANGED); /* Rewrite BGP route information. */ bgp_aggregate_decrement (bgp, p, bi, afi, SAFI_UNICAST); @@ -4990,9 +4997,8 @@ bgp_redistribute_delete (struct prefix *p, u_char type) if (ri) { bgp_aggregate_decrement (bgp, p, ri, afi, SAFI_UNICAST); - UNSET_FLAG (ri->flags, BGP_INFO_VALID); - bgp_process (bgp, rn, afi, SAFI_UNICAST); bgp_info_delete (rn, ri); + bgp_process (bgp, rn, afi, SAFI_UNICAST); } bgp_unlock_node (rn); } @@ -5019,9 +5025,8 @@ bgp_redistribute_withdraw (struct bgp *bgp, afi_t afi, int type) if (ri) { bgp_aggregate_decrement (bgp, &rn->p, ri, afi, SAFI_UNICAST); - UNSET_FLAG (ri->flags, BGP_INFO_VALID); - bgp_process (bgp, rn, afi, SAFI_UNICAST); bgp_info_delete (rn, ri); + bgp_process (bgp, rn, afi, SAFI_UNICAST); } } } @@ -8439,7 +8444,6 @@ bgp_peer_counts (struct vty *vty, struct peer *peer, afi_t afi, safi_t safi) if (ain->peer == peer) pcounts[PCOUNT_ADJ_IN]++; -#define PFCNT_EXCLUDED (BGP_INFO_DAMPED|BGP_INFO_HISTORY|BGP_INFO_REMOVED|BGP_INFO_STALE) for (ri = rn->info; ri; ri = ri->next) { char buf[SU_ADDRSTRLEN]; @@ -8459,13 +8463,13 @@ bgp_peer_counts (struct vty *vty, struct peer *peer, afi_t afi, safi_t safi) pcounts[PCOUNT_STALE]++; if (CHECK_FLAG (ri->flags, BGP_INFO_VALID)) pcounts[PCOUNT_VALID]++; - if (!CHECK_FLAG (ri->flags, PFCNT_EXCLUDED)) + if (!CHECK_FLAG (ri->flags, BGP_INFO_UNUSEABLE)) pcounts[PCOUNT_PFCNT]++; if (CHECK_FLAG (ri->flags, BGP_INFO_COUNTED)) { pcounts[PCOUNT_COUNTED]++; - if (CHECK_FLAG (ri->flags, PFCNT_EXCLUDED)) + if (CHECK_FLAG (ri->flags, BGP_INFO_UNUSEABLE)) plog_warn (peer->log, "%s [pcount] %s/%d is counted but flags 0x%x", peer->host, @@ -8476,7 +8480,7 @@ bgp_peer_counts (struct vty *vty, struct peer *peer, afi_t afi, safi_t safi) } else { - if (!CHECK_FLAG (ri->flags, PFCNT_EXCLUDED)) + if (!CHECK_FLAG (ri->flags, BGP_INFO_UNUSEABLE)) plog_warn (peer->log, "%s [pcount] %s/%d not counted but flags 0x%x", peer->host, @@ -8487,7 +8491,6 @@ bgp_peer_counts (struct vty *vty, struct peer *peer, afi_t afi, safi_t safi) } } } -#undef PFCNT_EXCLUDED vty_out (vty, "Prefix counts for %s, %s%s", peer->host, afi_safi_print (afi, safi), VTY_NEWLINE); diff --git a/bgpd/bgp_route.h b/bgpd/bgp_route.h index e5f3ae59..b0c2fccf 100644 --- a/bgpd/bgp_route.h +++ b/bgpd/bgp_route.h @@ -105,6 +105,17 @@ struct bgp_static u_char tag[3]; }; +/* Flags which indicate a route is unuseable in some form */ +#define BGP_INFO_UNUSEABLE \ + (BGP_INFO_HISTORY|BGP_INFO_DAMPED|BGP_INFO_REMOVED) +/* Macro to check BGP information is alive or not. Sadly, + * not equivalent to just checking previous, because of the + * sense of the additional VALID flag. + */ +#define BGP_INFO_HOLDDOWN(BI) \ + (! CHECK_FLAG ((BI)->flags, BGP_INFO_VALID) \ + || CHECK_FLAG ((BI)->flags, BGP_INFO_UNUSEABLE)) + #define DISTRIBUTE_IN_NAME(F) ((F)->dlist[FILTER_IN].name) #define DISTRIBUTE_IN(F) ((F)->dlist[FILTER_IN].alist) #define DISTRIBUTE_OUT_NAME(F) ((F)->dlist[FILTER_OUT].name) @@ -151,6 +162,8 @@ extern struct bgp_info *bgp_info_lock (struct bgp_info *); extern struct bgp_info *bgp_info_unlock (struct bgp_info *); extern void bgp_info_add (struct bgp_node *rn, struct bgp_info *ri); extern void bgp_info_delete (struct bgp_node *rn, struct bgp_info *ri); +extern void bgp_info_set_flag (struct bgp_node *, struct bgp_info *, u_int32_t); +extern void bgp_info_unset_flag (struct bgp_node *, struct bgp_info *, u_int32_t); extern int bgp_nlri_sanity_check (struct peer *, int, u_char *, bgp_size_t); extern int bgp_nlri_parse (struct peer *, struct attr *, struct bgp_nlri *); diff --git a/bgpd/bgpd.h b/bgpd/bgpd.h index 9e2aa3e0..b8ae30ae 100644 --- a/bgpd/bgpd.h +++ b/bgpd/bgpd.h @@ -740,13 +740,6 @@ enum bgp_clear_type #define BGP_INPUT(P) ((P)->ibuf) #define BGP_INPUT_PNT(P) (STREAM_PNT(BGP_INPUT(P))) -/* Macro to check BGP information is alive or not. */ -#define BGP_INFO_HOLDDOWN(BI) \ - (! CHECK_FLAG ((BI)->flags, BGP_INFO_VALID) \ - || CHECK_FLAG ((BI)->flags, BGP_INFO_HISTORY) \ - || CHECK_FLAG ((BI)->flags, BGP_INFO_DAMPED) \ - || CHECK_FLAG ((BI)->flags, BGP_INFO_REMOVED)) - /* Count prefix size from mask length */ #define PSIZE(a) (((a) + 7) / (8)) |