137 static int garp_attr_cmp(const struct garp_attr *attr,  in garp_attr_cmp()  argument
140 	if (attr->type != type)  in garp_attr_cmp()
141 		return attr->type - type;  in garp_attr_cmp()
142 	if (attr->dlen != len)  in garp_attr_cmp()
143 		return attr->dlen - len;  in garp_attr_cmp()
144 	return memcmp(attr->data, data, len);  in garp_attr_cmp()
151 	struct garp_attr *attr;  in garp_attr_lookup()  local
155 		attr = rb_entry(parent, struct garp_attr, node);  in garp_attr_lookup()
156 		d = garp_attr_cmp(attr, data, len, type);  in garp_attr_lookup()
162 			return attr;  in garp_attr_lookup()
171 	struct garp_attr *attr;  in garp_attr_create()  local
176 		attr = rb_entry(parent, struct garp_attr, node);  in garp_attr_create()
177 		d = garp_attr_cmp(attr, data, len, type);  in garp_attr_create()
184 			return attr;  in garp_attr_create()
187 	attr = kmalloc(sizeof(*attr) + len, GFP_ATOMIC);  in garp_attr_create()
188 	if (!attr)  in garp_attr_create()
189 		return attr;  in garp_attr_create()
190 	attr->state = GARP_APPLICANT_VO;  in garp_attr_create()
191 	attr->type  = type;  in garp_attr_create()
192 	attr->dlen  = len;  in garp_attr_create()
193 	memcpy(attr->data, data, len);  in garp_attr_create()
195 	rb_link_node(&attr->node, parent, p);  in garp_attr_create()
196 	rb_insert_color(&attr->node, &app->gid);  in garp_attr_create()
197 	return attr;  in garp_attr_create()
200 static void garp_attr_destroy(struct garp_applicant *app, struct garp_attr *attr)  in garp_attr_destroy()  argument
202 	rb_erase(&attr->node, &app->gid);  in garp_attr_destroy()
203 	kfree(attr);  in garp_attr_destroy()
209 	struct garp_attr *attr;  in garp_attr_destroy_all()  local
214 		attr = rb_entry(node, struct garp_attr, node);  in garp_attr_destroy_all()
215 		garp_attr_destroy(app, attr);  in garp_attr_destroy_all()
288 				const struct garp_attr *attr,  in garp_pdu_append_attr()  argument
301 	if (garp_cb(app->pdu)->cur_type != attr->type) {  in garp_pdu_append_attr()
305 		if (garp_pdu_append_msg(app, attr->type) < 0)  in garp_pdu_append_attr()
309 	len = sizeof(*ga) + attr->dlen;  in garp_pdu_append_attr()
315 	memcpy(ga->data, attr->data, attr->dlen);  in garp_pdu_append_attr()
324 			    struct garp_attr *attr, enum garp_event event)  in garp_attr_event()  argument
328 	state = garp_applicant_state_table[attr->state][event].state;  in garp_attr_event()
332 	switch (garp_applicant_state_table[attr->state][event].action) {  in garp_attr_event()
338 		if (garp_pdu_append_attr(app, attr, GARP_JOIN_IN) < 0)  in garp_attr_event()
342 		garp_pdu_append_attr(app, attr, GARP_LEAVE_EMPTY);  in garp_attr_event()
345 		garp_attr_destroy(app, attr);  in garp_attr_event()
351 	attr->state = state;  in garp_attr_event()
360 	struct garp_attr *attr;  in garp_request_join()  local
363 	attr = garp_attr_create(app, data, len, type);  in garp_request_join()
364 	if (!attr) {  in garp_request_join()
368 	garp_attr_event(app, attr, GARP_EVENT_REQ_JOIN);  in garp_request_join()
380 	struct garp_attr *attr;  in garp_request_leave()  local
383 	attr = garp_attr_lookup(app, data, len, type);  in garp_request_leave()
384 	if (!attr) {  in garp_request_leave()
388 	garp_attr_event(app, attr, GARP_EVENT_REQ_LEAVE);  in garp_request_leave()
396 	struct garp_attr *attr;  in garp_gid_event()  local
401 		attr = rb_entry(node, struct garp_attr, node);  in garp_gid_event()
402 		garp_attr_event(app, attr, event);  in garp_gid_event()
442 	struct garp_attr *attr;  in garp_pdu_parse_attr()  local
484 	attr = garp_attr_lookup(app, ga->data, dlen, attrtype);  in garp_pdu_parse_attr()
485 	if (attr == NULL)  in garp_pdu_parse_attr()
487 	garp_attr_event(app, attr, event);  in garp_pdu_parse_attr()