node: add methods to access nodes by bssid

Add methods which returns a given node for a provided BSSID. This is
required to retrieve the node object from information available with
a neighbor report.

Signed-off-by: David Bauer <mail@david-bauer.net>

node.c

@@ -20,6 +20,32 @@
 #include "node.h"
 #include "usteer.h"
 
+struct usteer_remote_node *usteer_remote_node_by_bssid(uint8_t *bssid) {
+	struct usteer_remote_node *rn;
+
+	for_each_remote_node(rn) {
+		if (!memcmp(rn->node.bssid, bssid, 6))
+			return rn;
+	}
+
+	return NULL;
+}
+
+struct usteer_node *usteer_node_by_bssid(uint8_t *bssid) {
+	struct usteer_remote_node *rn;
+	struct usteer_local_node *ln;
+
+	rn = usteer_remote_node_by_bssid(bssid);
+	if (rn)
+		return &rn->node;
+
+	ln = usteer_local_node_by_bssid(bssid);
+	if (ln)
+		return &ln->node;
+
+	return NULL;
+}
+
 void usteer_node_set_blob(struct blob_attr **dest, struct blob_attr *val)
 {
 	int new_len;