diff options
Diffstat (limited to 'ospfd/ospf_gr_helper.c')
| -rw-r--r-- | ospfd/ospf_gr_helper.c | 204 |
1 files changed, 200 insertions, 4 deletions
diff --git a/ospfd/ospf_gr_helper.c b/ospfd/ospf_gr_helper.c index 1c2c4f5f9d..6d630f942a 100644 --- a/ospfd/ospf_gr_helper.c +++ b/ospfd/ospf_gr_helper.c @@ -250,7 +250,7 @@ static int ospf_handle_grace_timer_expiry(struct thread *thread) * Ref rfc3623 section 3.1 * * ospf - * Ospf pointer. + * OSPF pointer. * * lsa * Grace LSA received from RESTARTER. @@ -560,10 +560,10 @@ void ospf_helper_handle_topo_chg(struct ospf *ospf, struct ospf_lsa *lsa) * Ref rfc3623 section 3.2 * * ospf - * Ospf pointer. + * OSPF pointer. * * nbr - * Ospf neighbour for which it is acting as HELPER. + * OSPF neighbour for which it is acting as HELPER. * * reason * The reason for exiting from HELPER. @@ -636,7 +636,7 @@ void ospf_gr_helper_exit(struct ospf_neighbor *nbr, * If router acting as HELPER, It exits from helper role. * * ospf - * Ospf pointer. + * OSPF pointer. * * lsa * Grace LSA received from RESTARTER. @@ -692,3 +692,199 @@ void ospf_process_maxage_grace_lsa(struct ospf *ospf, struct ospf_lsa *lsa, ospf_gr_helper_exit(restarter, OSPF_GR_HELPER_COMPLETED); } + +/* Configuration handlers */ +/* + * Disable/Enable HELPER support on router level. + * + * ospf + * OSPFpointer. + * + * status + * TRUE/FALSE + * + * Returns: + * Nothing. + */ +void ospf_gr_helper_support_set(struct ospf *ospf, bool support) +{ + struct ospf_interface *oi; + struct listnode *node; + struct advRtr lookup; + + if (ospf->is_helper_supported == support) + return; + + ospf->is_helper_supported = support; + + /* If helper support disabled, cease HELPER role for all + * supporting neighbors. + */ + if (support == OSPF_GR_FALSE) { + for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { + struct route_node *rn = NULL; + + if (ospf_interface_neighbor_count(oi) == 0) + continue; + + for (rn = route_top(oi->nbrs); rn; + rn = route_next(rn)) { + struct ospf_neighbor *nbr = NULL; + + if (!rn->info) + continue; + + nbr = rn->info; + + lookup.advRtrAddr.s_addr = + nbr->router_id.s_addr; + /* check if helper support enabled for the + * correspodning routerid.If enabled, dont + * dont exit from helper role. + */ + if (hash_lookup(ospf->enable_rtr_list, &lookup)) + continue; + + if (OSPF_GR_IS_ACTIVE_HELPER(nbr)) + ospf_gr_helper_exit( + nbr, OSPF_GR_HELPER_TOPO_CHG); + } + } + } +} + +/* + * Enable/Disable HELPER support on a specified advertagement + * router. + * + * ospf + * OSPF pointer. + * + * advRtr + * HELPER support for given Advertisement Router. + * + * support + * True - Enable Helper Support. + * False - Disable Helper Support. + * + * Returns: + * Nothing. + */ + +void ospf_gr_helper_support_set_per_routerid(struct ospf *ospf, + struct in_addr *advrtr, + bool support) +{ + struct advRtr temp; + struct advRtr *rtr; + struct ospf_interface *oi; + struct listnode *node; + + temp.advRtrAddr.s_addr = advrtr->s_addr; + + if (support == OSPF_GR_FALSE) { + /*Delete the routerid from the enable router hash table */ + rtr = hash_lookup(ospf->enable_rtr_list, &temp); + + if (rtr) { + hash_release(ospf->enable_rtr_list, rtr); + ospf_disable_rtr_hash_free(rtr); + } + + /* If helper support is enabled globally + * no action is required. + */ + if (ospf->is_helper_supported) + return; + + /* Cease the HELPER role fore neighbours from the + * specified advertisement router. + */ + for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { + struct route_node *rn = NULL; + + if (ospf_interface_neighbor_count(oi) == 0) + continue; + + for (rn = route_top(oi->nbrs); rn; + rn = route_next(rn)) { + struct ospf_neighbor *nbr = NULL; + + if (!rn->info) + continue; + + nbr = rn->info; + + if (nbr->router_id.s_addr != advrtr->s_addr) + continue; + + if (OSPF_GR_IS_ACTIVE_HELPER(nbr)) + ospf_gr_helper_exit( + nbr, OSPF_GR_HELPER_TOPO_CHG); + } + } + + } else { + /* Add the routerid to the enable router hash table */ + hash_get(ospf->enable_rtr_list, &temp, + ospf_enable_rtr_hash_alloc); + } +} + +/* + * Api to enable/disable strict lsa check on the HELPER. + * + * ospf + * OSPF pointer. + * + * enabled + * True - disable the lsa check. + * False - enable the strict lsa check. + * + * Returns: + * Nothing. + */ +void ospf_gr_helper_lsa_check_set(struct ospf *ospf, bool enabled) +{ + if (ospf->strict_lsa_check == enabled) + return; + + ospf->strict_lsa_check = enabled; +} + +/* + * Api to set the supported grace interval in this router. + * + * ospf + * OSPF pointer. + * + * interval + * The supported grace interval.. + * + * Returns: + * Nothing. + */ +void ospf_gr_helper_supported_gracetime_set(struct ospf *ospf, + uint32_t interval) +{ + ospf->supported_grace_time = interval; +} + +/* + * Api to set the supported restart reason. + * + * ospf + * OSPF pointer. + * + * planned_only + * True: support only planned restart. + * False: support for planned/unplanned restarts. + * + * Returns: + * Nothing. + */ +void ospf_gr_helper_set_supported_planned_only_restart(struct ospf *ospf, + bool planned_only) +{ + ospf->only_planned_restart = planned_only; +} |