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>

local_node.c

@@ -79,6 +79,19 @@ usteer_free_node(struct ubus_context *ctx, struct usteer_local_node *ln)
 	free(ln);
 }
 
+struct usteer_local_node *usteer_local_node_by_bssid(uint8_t *bssid) {
+	struct usteer_local_node *ln;
+	struct usteer_node *n;
+
+	for_each_local_node(n) {
+		ln = container_of(n, struct usteer_local_node, node);
+		if (!memcmp(n->bssid, bssid, 6))
+			return ln;
+	}
+
+	return NULL;
+}
+
 static void
 usteer_handle_remove(struct ubus_context *ctx, struct ubus_subscriber *s,
 		    uint32_t id)

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;

usteer.h

@@ -307,6 +307,10 @@ static inline const char *usteer_node_name(struct usteer_node *node)
 }
 void usteer_node_set_blob(struct blob_attr **dest, struct blob_attr *val);
 
+struct usteer_local_node *usteer_local_node_by_bssid(uint8_t *bssid);
+struct usteer_remote_node *usteer_remote_node_by_bssid(uint8_t *bssid);
+struct usteer_node *usteer_node_by_bssid(uint8_t *bssid);
+
 struct usteer_node *usteer_node_get_next_neighbor(struct usteer_node *current_node, struct usteer_node *last);
 bool usteer_check_request(struct sta_info *si, enum usteer_event_type type);