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Modifies configure to just reload protocols when filters change.

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Before this change, protocols were restarted in that case.
This commit is contained in:
Ondrej Zajicek 2010-02-06 19:19:09 +01:00
parent c37e78510f
commit ebae4770c9
1 changed files with 73 additions and 29 deletions
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102
nest/proto.c
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@ -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 */
DBG("\t%s: power cycling\n", oc->name);
PD(p, "Reconfiguration failed, restarting");
p->cf_new = nc;
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, "Restarting");
p->cf_new = nc;
}
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)))