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Revert "ripngd: Cleanup memory allocations on shutdown"

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This reverts commit b1d29673ca.

This commit introduced a crash. When the VRF is deleted, the RIPNG
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 ripng vrf vrf1
frr(config-router)# exit
frr(config)# no vrf vrf1
frr(config)# no router ripng vrf vrf1
vtysh: error reading from ripngd: Resource temporarily unavailable (11)Warning: closing connection to ripngd because of an I/O error!
frr(config)#
```

Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
(cherry picked from commit 9f6dade90e)
This commit is contained in:
Igor Ryzhov 2023-06-15 17:42:05 +03:00 committed by Mergify
parent 56a51f7edd
commit 6527233f29
1 changed files with 0 additions and 7 deletions
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7
ripngd/ripngd.c
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@ -2581,17 +2581,10 @@ static int ripng_vrf_new(struct vrf *vrf)
static int ripng_vrf_delete(struct vrf *vrf)
{
struct ripng *ripng;
if (IS_RIPNG_DEBUG_EVENT)
zlog_debug("%s: VRF deleted: %s(%u)", __func__, vrf->name,
vrf->vrf_id);
ripng = ripng_lookup_by_vrf_name(vrf->name);
if (!ripng)
return 0;
ripng_clean(ripng);
return 0;
}