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Implements proper setting of 'gw' route attribute.

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Thanks to Sergey Popovich for the bugreport.
This commit is contained in:
Ondrej Zajicek
2013-08-13 20:25:05 +02:00
parent f8e8fcfabe
commit 00192d5ab8
3 changed files with 23 additions and 3 deletions
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23
filter/filter.c
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@@ -853,10 +853,29 @@ interpret(struct f_inst *what)
f_rta_cow();
{
struct rta *rta = (*f_rte)->attrs;
ip_addr ip;
switch (what->aux) {
case T_IP:
* (ip_addr *) ((char *) rta + what->a2.i) = v1.val.px.ip;
ip = v1.val.px.ip;
/* "gw" attribute? */
if (what->a2.i == OFFSETOF(struct rta, gw))
{
neighbor *n = neigh_find(rta->proto, &ip, 0);
if (!n || (n->scope == SCOPE_HOST))
runtime( "Invalid gw address" );
rta->dest = RTD_ROUTER;
rta->gw = ip;
rta->iface = n->iface;
rta->nexthops = NULL;
rta->hostentry = NULL;
}
else /* or "from" attribute? */
rta->from = ip;
break;
case T_ENUM_SCOPE:
@@ -867,10 +886,12 @@ interpret(struct f_inst *what)
i = v1.val.i;
if ((i != RTD_BLACKHOLE) && (i != RTD_UNREACHABLE) && (i != RTD_PROHIBIT))
runtime( "Destination can be changed only to blackhole, unreachable or prohibit" );
rta->dest = i;
rta->gw = IPA_NONE;
rta->iface = NULL;
rta->nexthops = NULL;
rta->hostentry = NULL;
break;
default: