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zebra: Add depends/dependents release functions

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Add some functions to iterate over the depends/dependents
RB tree and remove themselves from the other's RB tree.

Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
This commit is contained in:
Stephen Worley 2019-05-14 14:40:27 -07:00
parent 18cf7f15d6
commit 21615102a0
1 changed files with 28 additions and 0 deletions
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28
zebra/zebra_nhg.c
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@ -173,6 +173,20 @@ void zebra_nhg_depends_init(struct nhg_hash_entry *nhe)
nhg_connected_head_init(&nhe->nhg_depends);
}
/* Release this nhe from anything that it depends on */
static void zebra_nhg_depends_release(struct nhg_hash_entry *nhe)
{
if (!zebra_nhg_depends_is_empty(nhe)) {
struct nhg_connected *rb_node_dep = NULL;
struct nhg_connected *tmp = NULL;
RB_FOREACH_SAFE (rb_node_dep, nhg_connected_head,
&nhe->nhg_depends, tmp) {
zebra_nhg_dependents_del(rb_node_dep->nhe, nhe);
}
}
}
unsigned int zebra_nhg_dependents_count(const struct nhg_hash_entry *nhe)
{
return nhg_connected_head_count(&nhe->nhg_dependents);
@ -217,6 +231,20 @@ void zebra_nhg_dependents_init(struct nhg_hash_entry *nhe)
nhg_connected_head_init(&nhe->nhg_dependents);
}
/* Release this nhe from anything depending on it */
static void zebra_nhg_dependents_release(struct nhg_hash_entry *nhe)
{
if (!zebra_nhg_dependents_is_empty(nhe)) {
struct nhg_connected *rb_node_dep = NULL;
struct nhg_connected *tmp = NULL;
RB_FOREACH_SAFE (rb_node_dep, nhg_connected_head,
&nhe->nhg_dependents, tmp) {
zebra_nhg_depends_del(rb_node_dep->nhe, nhe);
}
}
}
/**
* zebra_nhg_lookup_id() - Lookup the nexthop group id in the id table
*