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isis: fix double-adding a circuit to the area

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isis_circuit_enable can be called for an already enabled circuit. In this
case we would add the circuit to the area multiple times.

Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
This commit is contained in:
Igor Ryzhov 2021-06-16 15:54:17 +03:00
parent 6eadfc2d41
commit 3ae43012b2
1 changed files with 6 additions and 4 deletions
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4
isisd/isis_circuit.c
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@ -78,12 +78,14 @@ DEFINE_HOOK(isis_circuit_del_hook, (struct isis_circuit *circuit), (circuit));
static void isis_circuit_enable(struct isis_circuit *circuit)
{
struct isis_area *area;
struct isis_area *area = circuit->area;
struct interface *ifp = circuit->interface;
if (!area) {
area = isis_area_lookup(circuit->tag, ifp->vrf_id);
if (area)
isis_area_add_circuit(area, circuit);
}
if (if_is_operative(ifp))
isis_csm_state_change(IF_UP_FROM_Z, circuit, ifp);