diff options
| -rw-r--r-- | nest/proto.c | 100 |
1 files changed, 72 insertions, 28 deletions
diff --git a/nest/proto.c b/nest/proto.c index 297c05e..9ac05c1 100644 --- a/nest/proto.c +++ b/nest/proto.c @@ -269,6 +269,66 @@ proto_init(struct proto_config *c) return q; } +static int +proto_reconfigure(struct proto *p, struct proto_config *oc, struct proto_config *nc, int type) +{ + /* If the protocol is DOWN, we just restart it */ + if (p->proto_state == PS_DOWN) + return 0; + + /* If there is a too big change in core attributes, ... */ + if ((nc->protocol != oc->protocol) || + (nc->disabled != oc->disabled) || + (nc->table->table != oc->table->table) || + (proto_get_router_id(nc) == proto_get_router_id(oc))) + return 0; + + int import_changed = (type != RECONFIG_SOFT) && ! filter_same(nc->in_filter, oc->in_filter); + int export_changed = (type != RECONFIG_SOFT) && ! filter_same(nc->out_filter, oc->out_filter); + + /* We treat a change in preferences by reimporting routes */ + if (nc->preference != oc->preference) + import_changed = 1; + + /* If the protocol in not UP, it has no routes and we can ignore such changes */ + if (p->proto_state != PS_UP) + import_changed = export_changed = 0; + + /* Without this hook we cannot reload routes and have to restart the protocol */ + if (import_changed && ! p->reload_routes) + return 0; + + p->debug = nc->debug; + p->mrtdump = nc->mrtdump; + + /* Execute protocol specific reconfigure hook */ + if (! (p->proto->reconfigure && p->proto->reconfigure(p, nc))) + return 0; + + DBG("\t%s: same\n", oc->name); + PD(p, "Reconfigured"); + p->cf = nc; + p->name = nc->name; + p->in_filter = nc->in_filter; + p->out_filter = nc->out_filter; + + if (import_changed && ! p->reload_routes(p)) + { + /* Now, the protocol is reconfigured. But route reload failed + and we have to do regular protocol restart. */ + p->disabled = 1; + proto_rethink_goal(p); + p->disabled = 0; + proto_rethink_goal(p); + return 1; + } + + if (export_changed) + proto_request_feeding(p); + + return 1; +} + /** * protos_commit - commit new protocol configuration * @new: new configuration @@ -315,36 +375,16 @@ protos_commit(struct config *new, struct config *old, int force_reconfig, int ty /* Found match, let's check if we can smoothly switch to new configuration */ /* No need to check description */ nc = sym->def; - if (!force_reconfig - && nc->protocol == oc->protocol - && nc->preference == oc->preference - && nc->disabled == oc->disabled - && nc->table->table == oc->table->table - && proto_get_router_id(nc) == proto_get_router_id(oc) - && ((type == RECONFIG_SOFT) || filter_same(nc->in_filter, oc->in_filter)) - && ((type == RECONFIG_SOFT) || filter_same(nc->out_filter, oc->out_filter)) - && p->proto_state != PS_DOWN) - { - /* Generic attributes match, try converting them and then ask the protocol */ - p->debug = nc->debug; - p->mrtdump = nc->mrtdump; - if (p->proto->reconfigure && p->proto->reconfigure(p, nc)) - { - DBG("\t%s: same\n", oc->name); - PD(p, "Reconfigured"); - p->cf = nc; - p->name = nc->name; - p->in_filter = nc->in_filter; - p->out_filter = nc->out_filter; - nc->proto = p; - continue; - } - } - /* Unsuccessful, force reconfig */ + nc->proto = p; + + /* We will try to reconfigure protocol p */ + if (! force_reconfig && proto_reconfigure(p, oc, nc, type)) + continue; + + /* Unsuccessful, we will restart it */ DBG("\t%s: power cycling\n", oc->name); - PD(p, "Reconfiguration failed, restarting"); + PD(p, "Restarting"); p->cf_new = nc; - nc->proto = p; } else { @@ -877,6 +917,10 @@ proto_xxable(char *pattern, int xx) break; } + /* If the protocol in not UP, it has no routes */ + if (p->proto_state != PS_UP) + break; + /* re-importing routes */ if (xx != XX_RELOAD_OUT) if (! (p->reload_routes && p->reload_routes(p))) |