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Diffstat (limited to 'zebra/zebra_nhg.c')
| -rw-r--r-- | zebra/zebra_nhg.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/zebra/zebra_nhg.c b/zebra/zebra_nhg.c index f1f6e7e2bf..fa7bab9d2c 100644 --- a/zebra/zebra_nhg.c +++ b/zebra/zebra_nhg.c @@ -2711,6 +2711,30 @@ void zebra_nhg_sweep_table(struct hash *hash) hash_iterate(hash, zebra_nhg_sweep_entry, NULL); } +static void zebra_nhg_mark_keep_entry(struct hash_bucket *bucket, void *arg) +{ + struct nhg_hash_entry *nhe = bucket->data; + + UNSET_FLAG(nhe->flags, NEXTHOP_GROUP_INSTALLED); +} + +/* + * When we are shutting down and we have retain mode enabled + * in zebra the process is to mark each vrf that it's + * routes should not be deleted. The problem with that + * is that shutdown actually free's up memory which + * causes the nexthop group's ref counts to go to zero + * we need a way to subtly tell the system to not remove + * the nexthop groups from the kernel at the same time. + * The easiest just looks like that we should not mark + * the nhg's as installed any more and when the ref count + * goes to zero we'll attempt to delete and do nothing + */ +void zebra_nhg_mark_keep(void) +{ + hash_iterate(zrouter.nhgs_id, zebra_nhg_mark_keep_entry, NULL); +} + /* Global control to disable use of kernel nexthops, if available. We can't * force the kernel to support nexthop ids, of course, but we can disable * zebra's use of them, for testing e.g. By default, if the kernel supports |