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Revert "ripd: Cleanup memory allocations on shutdown"

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This reverts commit 3d1588d8ed.

This commit introduced a crash. When the VRF is deleted, the RIP instance
should not be freed, because the NB infrastructure still stores the
pointer to it. The instance should be deleted only when it's actually
deleted from the configuration.

To reproduce the crash:
```
frr# conf t
frr(config)# vrf vrf1
frr(config-vrf)# exit
frr(config)# router rip vrf vrf1
frr(config-router)# exit
frr(config)# no vrf vrf1
frr(config)# no router rip vrf vrf1
vtysh: error reading from ripd: Resource temporarily unavailable (11)Warning: closing connection to ripd because of an I/O error!
frr(config)#
```

Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
(cherry picked from commit 054ca9b9ee)
This commit is contained in:
Igor Ryzhov 2023-06-15 17:35:30 +03:00 committed by Mergify
parent 04c9a280c1
commit 56a51f7edd
1 changed files with 0 additions and 8 deletions
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8
ripd/ripd.c
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@ -3551,18 +3551,10 @@ static int rip_vrf_new(struct vrf *vrf)
static int rip_vrf_delete(struct vrf *vrf)
{
struct rip *rip;
if (IS_RIP_DEBUG_EVENT)
zlog_debug("%s: VRF deleted: %s(%u)", __func__, vrf->name,
vrf->vrf_id);
rip = rip_lookup_by_vrf_name(vrf->name);
if (!rip)
return 0;
rip_clean(rip);
return 0;
}