43 static void l2tp_dfs_next_tunnel(struct l2tp_dfs_seq_data *pd)  in l2tp_dfs_next_tunnel()  argument
46 	if (pd->tunnel)  in l2tp_dfs_next_tunnel()
47 		l2tp_tunnel_put(pd->tunnel);  in l2tp_dfs_next_tunnel()
49 	pd->tunnel = l2tp_tunnel_get_next(pd->net, &pd->tkey);  in l2tp_dfs_next_tunnel()
50 	pd->tkey++;  in l2tp_dfs_next_tunnel()
53 static void l2tp_dfs_next_session(struct l2tp_dfs_seq_data *pd)  in l2tp_dfs_next_session()  argument
56 	if (pd->session)  in l2tp_dfs_next_session()
57 		l2tp_session_put(pd->session);  in l2tp_dfs_next_session()
59 	pd->session = l2tp_session_get_next(pd->net, pd->tunnel->sock,  in l2tp_dfs_next_session()
60 					    pd->tunnel->version,  in l2tp_dfs_next_session()
61 					    pd->tunnel->tunnel_id, &pd->skey);  in l2tp_dfs_next_session()
62 	pd->skey++;  in l2tp_dfs_next_session()
64 	if (!pd->session) {  in l2tp_dfs_next_session()
65 		pd->skey = 0;  in l2tp_dfs_next_session()
66 		l2tp_dfs_next_tunnel(pd);  in l2tp_dfs_next_session()
72 	struct l2tp_dfs_seq_data *pd = SEQ_START_TOKEN;  in l2tp_dfs_seq_start()  local
79 		pd = NULL;  in l2tp_dfs_seq_start()
82 	pd = m->private;  in l2tp_dfs_seq_start()
84 	if (!pd->tunnel)  in l2tp_dfs_seq_start()
85 		l2tp_dfs_next_tunnel(pd);  in l2tp_dfs_seq_start()
87 		l2tp_dfs_next_session(pd);  in l2tp_dfs_seq_start()
90 	if (!pd->tunnel && !pd->session)  in l2tp_dfs_seq_start()
91 		pd = NULL;  in l2tp_dfs_seq_start()
94 	return pd;  in l2tp_dfs_seq_start()
105 	struct l2tp_dfs_seq_data *pd = v;  in l2tp_dfs_seq_stop()  local
107 	if (!pd || pd == SEQ_START_TOKEN)  in l2tp_dfs_seq_stop()
113 	if (pd->session) {  in l2tp_dfs_seq_stop()
114 		l2tp_session_put(pd->session);  in l2tp_dfs_seq_stop()
115 		pd->session = NULL;  in l2tp_dfs_seq_stop()
117 	if (pd->tunnel) {  in l2tp_dfs_seq_stop()
118 		l2tp_tunnel_put(pd->tunnel);  in l2tp_dfs_seq_stop()
119 		pd->tunnel = NULL;  in l2tp_dfs_seq_stop()
232 	struct l2tp_dfs_seq_data *pd = v;  in l2tp_dfs_seq_show()  local
250 	if (!pd->session)  in l2tp_dfs_seq_show()
251 		l2tp_dfs_seq_tunnel_show(m, pd->tunnel);  in l2tp_dfs_seq_show()
253 		l2tp_dfs_seq_session_show(m, pd->session);  in l2tp_dfs_seq_show()
268 	struct l2tp_dfs_seq_data *pd;  in l2tp_dfs_seq_open()  local
272 	pd = kzalloc(sizeof(*pd), GFP_KERNEL);  in l2tp_dfs_seq_open()
273 	if (!pd)  in l2tp_dfs_seq_open()
279 	pd->net = get_net_ns_by_pid(current->pid);  in l2tp_dfs_seq_open()
280 	if (IS_ERR(pd->net)) {  in l2tp_dfs_seq_open()
281 		rc = PTR_ERR(pd->net);  in l2tp_dfs_seq_open()
284 	netns_tracker_alloc(pd->net, &pd->ns_tracker, GFP_KERNEL);  in l2tp_dfs_seq_open()
290 	seq->private = pd;  in l2tp_dfs_seq_open()
296 	put_net_track(pd->net, &pd->ns_tracker);  in l2tp_dfs_seq_open()
298 	kfree(pd);  in l2tp_dfs_seq_open()
304 	struct l2tp_dfs_seq_data *pd;  in l2tp_dfs_seq_release()  local
308 	pd = seq->private;  in l2tp_dfs_seq_release()
309 	if (pd->net)  in l2tp_dfs_seq_release()
310 		put_net_track(pd->net, &pd->ns_tracker);  in l2tp_dfs_seq_release()
311 	kfree(pd);  in l2tp_dfs_seq_release()