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routing: add iterator-based nhop traversal KPI.

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MFC after:	2 weeks
This commit is contained in:
Alexander V. Chernikov 2023-04-25 10:55:16 +00:00
parent fd1aa866eb
commit 34066d0008
2 changed files with 63 additions and 0 deletions
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50
sys/net/route/nhop_ctl.c
View File

@ -1076,6 +1076,56 @@ nhops_update_ifmtu(struct rib_head *rh, struct ifnet *ifp, uint32_t mtu)
}
struct nhop_object *
nhops_iter_start(struct nhop_iter *iter)
{
if (iter->rh == NULL)
iter->rh = rt_tables_get_rnh_safe(iter->fibnum, iter->family);
if (iter->rh != NULL) {
struct nh_control *ctl = iter->rh->nh_control;
NHOPS_RLOCK(ctl);
iter->_i = 0;
iter->_next = CHT_FIRST(&ctl->nh_head, iter->_i);
return (nhops_iter_next(iter));
} else
return (NULL);
}
struct nhop_object *
nhops_iter_next(struct nhop_iter *iter)
{
struct nhop_priv *nh_priv = iter->_next;
if (nh_priv != NULL) {
iter->_next = nh_priv->nh_next;
return (nh_priv->nh);
}
struct nh_control *ctl = iter->rh->nh_control;
while (++iter->_i < ctl->nh_head.hash_size) {
nh_priv = CHT_FIRST(&ctl->nh_head, iter->_i);
if (nh_priv != NULL) {
iter->_next = nh_priv->nh_next;
return (nh_priv->nh);
}
}
return (NULL);
}
void
nhops_iter_stop(struct nhop_iter *iter)
{
if (iter->rh != NULL) {
struct nh_control *ctl = iter->rh->nh_control;
NHOPS_RUNLOCK(ctl);
}
}
/*
* Prints nexthop @nh data in the provided @buf.
* Example: nh#33/inet/em0/192.168.0.1

13
sys/net/route/route_ctl.h
View File

@ -159,6 +159,19 @@ void ip6_writemask(struct in6_addr *addr6, uint8_t mask);
/* Nexthops */
uint32_t nhops_get_count(struct rib_head *rh);
struct nhop_priv;
struct nhop_iter {
uint32_t fibnum;
uint8_t family;
struct rib_head *rh;
int _i;
struct nhop_priv *_next;
};
struct nhop_object *nhops_iter_start(struct nhop_iter *iter);
struct nhop_object *nhops_iter_next(struct nhop_iter *iter);
void nhops_iter_stop(struct nhop_iter *iter);
/* Multipath */
struct weightened_nhop;