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zebra: The neigh host_list is expensive too

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The neighbor host_list is expensive as well.  Modify
the code to take advantage of a rb_tree as well.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2018-05-17 08:18:23 -04:00
parent 41db76c235
commit f2a503f0ce
2 changed files with 21 additions and 56 deletions
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75
zebra/zebra_vxlan.c
View File

@ -476,20 +476,20 @@ static void zl3vni_print_nh(zebra_neigh_t *n, struct vty *vty,
{
char buf1[ETHER_ADDR_STRLEN];
char buf2[INET6_ADDRSTRLEN];
struct listnode *node = NULL;
struct prefix *p = NULL;
json_object *json_hosts = NULL;
struct host_rb_entry *hle;
if (!json) {
vty_out(vty, "Ip: %s\n",
ipaddr2str(&n->ip, buf2, sizeof(buf2)));
vty_out(vty, " RMAC: %s\n",
prefix_mac2str(&n->emac, buf1, sizeof(buf1)));
vty_out(vty, " Refcount: %d\n", listcount(n->host_list));
vty_out(vty, " Refcount: %d\n",
rb_host_count(&n->host_rb));
vty_out(vty, " Prefixes:\n");
for (ALL_LIST_ELEMENTS_RO(n->host_list, node, p))
RB_FOREACH (hle, host_rb_entry_rb, &n->host_rb)
vty_out(vty, " %s\n",
prefix2str(p, buf2, sizeof(buf2)));
prefix2str(&hle->p, buf2, sizeof(buf2)));
} else {
json_hosts = json_object_new_array();
json_object_string_add(
@ -497,11 +497,12 @@ static void zl3vni_print_nh(zebra_neigh_t *n, struct vty *vty,
json_object_string_add(
json, "routerMac",
prefix_mac2str(&n->emac, buf2, sizeof(buf2)));
json_object_int_add(json, "refCount", listcount(n->host_list));
for (ALL_LIST_ELEMENTS_RO(n->host_list, node, p))
json_object_int_add(json, "refCount",
rb_host_count(&n->host_rb));
RB_FOREACH (hle, host_rb_entry_rb, &n->host_rb)
json_object_array_add(json_hosts,
json_object_new_string(prefix2str(
p, buf2, sizeof(buf2))));
&hle->p, buf2, sizeof(buf2))));
json_object_object_add(json, "prefixList", json_hosts);
}
}
@ -3117,44 +3118,6 @@ static void rb_delete_host(struct host_rb_entry_rb *hrbe, struct prefix *host)
return;
}
static int is_host_present_in_host_list(struct list *list, struct prefix *host)
{
struct listnode *node = NULL;
struct prefix *p = NULL;
for (ALL_LIST_ELEMENTS_RO(list, node, p)) {
if (prefix_same(p, host))
return 1;
}
return 0;
}
static void host_list_add_host(struct list *list, struct prefix *host)
{
struct prefix *p = NULL;
p = XCALLOC(MTYPE_HOST_PREFIX, sizeof(struct prefix));
memcpy(p, host, sizeof(struct prefix));
listnode_add_sort(list, p);
}
static void host_list_delete_host(struct list *list, struct prefix *host)
{
struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL;
struct prefix *p = NULL;
for (ALL_LIST_ELEMENTS(list, node, nnode, p)) {
if (prefix_same(p, host)) {
XFREE(MTYPE_HOST_PREFIX, p);
node_to_del = node;
}
}
if (node_to_del)
list_delete_node(list, node_to_del);
}
/*
* Look up MAC hash entry.
*/
@ -3374,8 +3337,7 @@ static zebra_neigh_t *zl3vni_nh_add(zebra_l3vni_t *zl3vni, struct ipaddr *ip,
n = hash_get(zl3vni->nh_table, &tmp_n, zl3vni_nh_alloc);
assert(n);
n->host_list = list_new();
n->host_list->cmp = (int (*)(void *, void *))prefix_cmp;
RB_INIT(host_rb_entry_rb, &n->host_rb);
memcpy(&n->emac, mac, ETH_ALEN);
SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE);
@ -3390,10 +3352,14 @@ static zebra_neigh_t *zl3vni_nh_add(zebra_l3vni_t *zl3vni, struct ipaddr *ip,
static int zl3vni_nh_del(zebra_l3vni_t *zl3vni, zebra_neigh_t *n)
{
zebra_neigh_t *tmp_n;
struct host_rb_entry *hle;
if (n->host_list)
list_delete_and_null(&n->host_list);
n->host_list = NULL;
while (!RB_EMPTY(host_rb_entry_rb, &n->host_rb)) {
hle = RB_ROOT(host_rb_entry_rb, &n->host_rb);
RB_REMOVE(host_rb_entry_rb, &n->host_rb, hle);
XFREE(MTYPE_HOST_PREFIX, hle);
}
tmp_n = hash_release(zl3vni->nh_table, n);
if (tmp_n)
@ -3458,8 +3424,7 @@ static int zl3vni_remote_nh_add(zebra_l3vni_t *zl3vni, struct ipaddr *vtep_ip,
zl3vni_nh_install(zl3vni, nh);
}
if (!is_host_present_in_host_list(nh->host_list, host_prefix))
host_list_add_host(nh->host_list, host_prefix);
rb_find_or_add_host(&nh->host_rb, host_prefix);
return 0;
}
@ -3468,9 +3433,9 @@ static int zl3vni_remote_nh_add(zebra_l3vni_t *zl3vni, struct ipaddr *vtep_ip,
static void zl3vni_remote_nh_del(zebra_l3vni_t *zl3vni, zebra_neigh_t *nh,
struct prefix *host_prefix)
{
host_list_delete_host(nh->host_list, host_prefix);
if (list_isempty(nh->host_list)) {
rb_delete_host(&nh->host_rb, host_prefix);
if (RB_EMPTY(host_rb_entry_rb, &nh->host_rb)) {
/* uninstall from kernel */
zl3vni_nh_uninstall(zl3vni, nh);

2
zebra/zebra_vxlan_private.h
View File

@ -336,7 +336,7 @@ struct zebra_neigh_t_ {
struct in_addr r_vtep_ip;
/* list of hosts pointing to this remote NH entry */
struct list *host_list;
struct host_rb_entry_rb host_rb;
};
/*