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ripd: fix interface wakeup after shutdown

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RIP schedules a call to `rip_interface_wakeup` in 1 second after
receiving the interface UP event from zebra. The function is called even
if the interface was shut down during this interval.

This is incorrect and also leads to a crash in the following scenario:
```
vtysh -c "conf" -c "router rip vrf red" -c "network enp2s0"
ip link add red type vrf table 1
ip link set enp2s0 vrf red
ip link set enp2s0 down
ip link set enp2s0 up && ip link del red
```

Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
This commit is contained in:
Igor Ryzhov 2021-05-17 19:34:02 +03:00
parent a63273a5b4
commit 8f0c2688d7
1 changed files with 3 additions and 0 deletions
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3
ripd/rip_interface.c
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@ -493,6 +493,9 @@ int rip_if_down(struct interface *ifp)
struct listnode *listnode = NULL, *nextnode = NULL;
ri = ifp->info;
THREAD_OFF(ri->t_wakeup);
rip = ri->rip;
if (rip) {
for (rp = route_top(rip->table); rp; rp = route_next(rp))