39 static void x25_transmit_restart_confirmation(struct x25_neigh *nb);
40 static void x25_transmit_restart_request(struct x25_neigh *nb);
45 static inline void x25_start_t20timer(struct x25_neigh *nb)  in x25_start_t20timer()  argument
47 	mod_timer(&nb->t20timer, jiffies + nb->t20);  in x25_start_t20timer()
52 	struct x25_neigh *nb = (struct x25_neigh *)param;  in x25_t20timer_expiry()  local
54 	x25_transmit_restart_request(nb);  in x25_t20timer_expiry()
56 	x25_start_t20timer(nb);  in x25_t20timer_expiry()
59 static inline void x25_stop_t20timer(struct x25_neigh *nb)  in x25_stop_t20timer()  argument
61 	del_timer(&nb->t20timer);  in x25_stop_t20timer()
64 static inline int x25_t20timer_pending(struct x25_neigh *nb)  in x25_t20timer_pending()  argument
66 	return timer_pending(&nb->t20timer);  in x25_t20timer_pending()
72 void x25_link_control(struct sk_buff *skb, struct x25_neigh *nb,  in x25_link_control()  argument
80 		confirm = !x25_t20timer_pending(nb);  in x25_link_control()
81 		x25_stop_t20timer(nb);  in x25_link_control()
82 		nb->state = X25_LINK_STATE_3;  in x25_link_control()
84 			x25_transmit_restart_confirmation(nb);  in x25_link_control()
88 		x25_stop_t20timer(nb);  in x25_link_control()
89 		nb->state = X25_LINK_STATE_3;  in x25_link_control()
107 	if (nb->state == X25_LINK_STATE_3)  in x25_link_control()
108 		while ((skbn = skb_dequeue(&nb->queue)) != NULL)  in x25_link_control()
109 			x25_send_frame(skbn, nb);  in x25_link_control()
115 static void x25_transmit_restart_request(struct x25_neigh *nb)  in x25_transmit_restart_request()  argument
128 	*dptr++ = nb->extended ? X25_GFI_EXTSEQ : X25_GFI_STDSEQ;  in x25_transmit_restart_request()
136 	x25_send_frame(skb, nb);  in x25_transmit_restart_request()
142 static void x25_transmit_restart_confirmation(struct x25_neigh *nb)  in x25_transmit_restart_confirmation()  argument
155 	*dptr++ = nb->extended ? X25_GFI_EXTSEQ : X25_GFI_STDSEQ;  in x25_transmit_restart_confirmation()
161 	x25_send_frame(skb, nb);  in x25_transmit_restart_confirmation()
168 void x25_transmit_clear_request(struct x25_neigh *nb, unsigned int lci,  in x25_transmit_clear_request()  argument
182 	*dptr++ = ((lci >> 8) & 0x0F) | (nb->extended ?  in x25_transmit_clear_request()
192 	x25_send_frame(skb, nb);  in x25_transmit_clear_request()
195 void x25_transmit_link(struct sk_buff *skb, struct x25_neigh *nb)  in x25_transmit_link()  argument
197 	switch (nb->state) {  in x25_transmit_link()
199 		skb_queue_tail(&nb->queue, skb);  in x25_transmit_link()
200 		nb->state = X25_LINK_STATE_1;  in x25_transmit_link()
201 		x25_establish_link(nb);  in x25_transmit_link()
205 		skb_queue_tail(&nb->queue, skb);  in x25_transmit_link()
208 		x25_send_frame(skb, nb);  in x25_transmit_link()
216 void x25_link_established(struct x25_neigh *nb)  in x25_link_established()  argument
218 	switch (nb->state) {  in x25_link_established()
220 		nb->state = X25_LINK_STATE_2;  in x25_link_established()
223 		x25_transmit_restart_request(nb);  in x25_link_established()
224 		nb->state = X25_LINK_STATE_2;  in x25_link_established()
225 		x25_start_t20timer(nb);  in x25_link_established()
235 void x25_link_terminated(struct x25_neigh *nb)  in x25_link_terminated()  argument
237 	nb->state = X25_LINK_STATE_0;  in x25_link_terminated()
239 	x25_kill_by_neigh(nb);  in x25_link_terminated()
247 	struct x25_neigh *nb = kmalloc(sizeof(*nb), GFP_ATOMIC);  in x25_link_device_up()  local
249 	if (!nb)  in x25_link_device_up()
252 	skb_queue_head_init(&nb->queue);  in x25_link_device_up()
253 	setup_timer(&nb->t20timer, x25_t20timer_expiry, (unsigned long)nb);  in x25_link_device_up()
256 	nb->dev      = dev;  in x25_link_device_up()
257 	nb->state    = X25_LINK_STATE_0;  in x25_link_device_up()
258 	nb->extended = 0;  in x25_link_device_up()
262 	nb->global_facil_mask = X25_MASK_REVERSE |  in x25_link_device_up()
266 	nb->t20      = sysctl_x25_restart_request_timeout;  in x25_link_device_up()
267 	atomic_set(&nb->refcnt, 1);  in x25_link_device_up()
270 	list_add(&nb->node, &x25_neigh_list);  in x25_link_device_up()
281 static void __x25_remove_neigh(struct x25_neigh *nb)  in __x25_remove_neigh()  argument
283 	skb_queue_purge(&nb->queue);  in __x25_remove_neigh()
284 	x25_stop_t20timer(nb);  in __x25_remove_neigh()
286 	if (nb->node.next) {  in __x25_remove_neigh()
287 		list_del(&nb->node);  in __x25_remove_neigh()
288 		x25_neigh_put(nb);  in __x25_remove_neigh()
297 	struct x25_neigh *nb;  in x25_link_device_down()  local
303 		nb = list_entry(entry, struct x25_neigh, node);  in x25_link_device_down()
305 		if (nb->dev == dev) {  in x25_link_device_down()
306 			__x25_remove_neigh(nb);  in x25_link_device_down()
319 	struct x25_neigh *nb, *use = NULL;  in x25_get_neigh()  local
324 		nb = list_entry(entry, struct x25_neigh, node);  in x25_get_neigh()
326 		if (nb->dev == dev) {  in x25_get_neigh()
327 			use = nb;  in x25_get_neigh()
344 	struct x25_neigh *nb;  in x25_subscr_ioctl()  local
359 	if ((nb = x25_get_neigh(dev)) == NULL)  in x25_subscr_ioctl()
366 		x25_subscr.extended	     = nb->extended;  in x25_subscr_ioctl()
367 		x25_subscr.global_facil_mask = nb->global_facil_mask;  in x25_subscr_ioctl()
376 			nb->extended	     = x25_subscr.extended;  in x25_subscr_ioctl()
377 			nb->global_facil_mask = x25_subscr.global_facil_mask;  in x25_subscr_ioctl()
381 	x25_neigh_put(nb);  in x25_subscr_ioctl()
395 	struct x25_neigh *nb;  in x25_link_free()  local
403 		nb = list_entry(entry, struct x25_neigh, node);  in x25_link_free()
404 		dev = nb->dev;  in x25_link_free()
405 		__x25_remove_neigh(nb);  in x25_link_free()