41 static void x25_transmit_restart_confirmation(struct x25_neigh *nb);
42 static void x25_transmit_restart_request(struct x25_neigh *nb);
47 static inline void x25_start_t20timer(struct x25_neigh *nb)  in x25_start_t20timer()  argument
49 	mod_timer(&nb->t20timer, jiffies + nb->t20);  in x25_start_t20timer()
54 	struct x25_neigh *nb = (struct x25_neigh *)param;  in x25_t20timer_expiry()  local
56 	x25_transmit_restart_request(nb);  in x25_t20timer_expiry()
58 	x25_start_t20timer(nb);  in x25_t20timer_expiry()
61 static inline void x25_stop_t20timer(struct x25_neigh *nb)  in x25_stop_t20timer()  argument
63 	del_timer(&nb->t20timer);  in x25_stop_t20timer()
66 static inline int x25_t20timer_pending(struct x25_neigh *nb)  in x25_t20timer_pending()  argument
68 	return timer_pending(&nb->t20timer);  in x25_t20timer_pending()
74 void x25_link_control(struct sk_buff *skb, struct x25_neigh *nb,  in x25_link_control()  argument
82 		confirm = !x25_t20timer_pending(nb);  in x25_link_control()
83 		x25_stop_t20timer(nb);  in x25_link_control()
84 		nb->state = X25_LINK_STATE_3;  in x25_link_control()
86 			x25_transmit_restart_confirmation(nb);  in x25_link_control()
90 		x25_stop_t20timer(nb);  in x25_link_control()
91 		nb->state = X25_LINK_STATE_3;  in x25_link_control()
109 	if (nb->state == X25_LINK_STATE_3)  in x25_link_control()
110 		while ((skbn = skb_dequeue(&nb->queue)) != NULL)  in x25_link_control()
111 			x25_send_frame(skbn, nb);  in x25_link_control()
117 static void x25_transmit_restart_request(struct x25_neigh *nb)  in x25_transmit_restart_request()  argument
130 	*dptr++ = nb->extended ? X25_GFI_EXTSEQ : X25_GFI_STDSEQ;  in x25_transmit_restart_request()
138 	x25_send_frame(skb, nb);  in x25_transmit_restart_request()
144 static void x25_transmit_restart_confirmation(struct x25_neigh *nb)  in x25_transmit_restart_confirmation()  argument
157 	*dptr++ = nb->extended ? X25_GFI_EXTSEQ : X25_GFI_STDSEQ;  in x25_transmit_restart_confirmation()
163 	x25_send_frame(skb, nb);  in x25_transmit_restart_confirmation()
170 void x25_transmit_clear_request(struct x25_neigh *nb, unsigned int lci,  in x25_transmit_clear_request()  argument
184 	*dptr++ = ((lci >> 8) & 0x0F) | (nb->extended ?  in x25_transmit_clear_request()
194 	x25_send_frame(skb, nb);  in x25_transmit_clear_request()
197 void x25_transmit_link(struct sk_buff *skb, struct x25_neigh *nb)  in x25_transmit_link()  argument
199 	switch (nb->state) {  in x25_transmit_link()
201 		skb_queue_tail(&nb->queue, skb);  in x25_transmit_link()
202 		nb->state = X25_LINK_STATE_1;  in x25_transmit_link()
203 		x25_establish_link(nb);  in x25_transmit_link()
207 		skb_queue_tail(&nb->queue, skb);  in x25_transmit_link()
210 		x25_send_frame(skb, nb);  in x25_transmit_link()
218 void x25_link_established(struct x25_neigh *nb)  in x25_link_established()  argument
220 	switch (nb->state) {  in x25_link_established()
222 		nb->state = X25_LINK_STATE_2;  in x25_link_established()
225 		x25_transmit_restart_request(nb);  in x25_link_established()
226 		nb->state = X25_LINK_STATE_2;  in x25_link_established()
227 		x25_start_t20timer(nb);  in x25_link_established()
237 void x25_link_terminated(struct x25_neigh *nb)  in x25_link_terminated()  argument
239 	nb->state = X25_LINK_STATE_0;  in x25_link_terminated()
241 	x25_kill_by_neigh(nb);  in x25_link_terminated()
249 	struct x25_neigh *nb = kmalloc(sizeof(*nb), GFP_ATOMIC);  in x25_link_device_up()  local
251 	if (!nb)  in x25_link_device_up()
254 	skb_queue_head_init(&nb->queue);  in x25_link_device_up()
255 	setup_timer(&nb->t20timer, x25_t20timer_expiry, (unsigned long)nb);  in x25_link_device_up()
258 	nb->dev      = dev;  in x25_link_device_up()
259 	nb->state    = X25_LINK_STATE_0;  in x25_link_device_up()
260 	nb->extended = 0;  in x25_link_device_up()
264 	nb->global_facil_mask = X25_MASK_REVERSE |  in x25_link_device_up()
268 	nb->t20      = sysctl_x25_restart_request_timeout;  in x25_link_device_up()
269 	atomic_set(&nb->refcnt, 1);  in x25_link_device_up()
272 	list_add(&nb->node, &x25_neigh_list);  in x25_link_device_up()
283 static void __x25_remove_neigh(struct x25_neigh *nb)  in __x25_remove_neigh()  argument
285 	skb_queue_purge(&nb->queue);  in __x25_remove_neigh()
286 	x25_stop_t20timer(nb);  in __x25_remove_neigh()
288 	if (nb->node.next) {  in __x25_remove_neigh()
289 		list_del(&nb->node);  in __x25_remove_neigh()
290 		x25_neigh_put(nb);  in __x25_remove_neigh()
299 	struct x25_neigh *nb;  in x25_link_device_down()  local
305 		nb = list_entry(entry, struct x25_neigh, node);  in x25_link_device_down()
307 		if (nb->dev == dev) {  in x25_link_device_down()
308 			__x25_remove_neigh(nb);  in x25_link_device_down()
321 	struct x25_neigh *nb, *use = NULL;  in x25_get_neigh()  local
326 		nb = list_entry(entry, struct x25_neigh, node);  in x25_get_neigh()
328 		if (nb->dev == dev) {  in x25_get_neigh()
329 			use = nb;  in x25_get_neigh()
346 	struct x25_neigh *nb;  in x25_subscr_ioctl()  local
361 	if ((nb = x25_get_neigh(dev)) == NULL)  in x25_subscr_ioctl()
368 		x25_subscr.extended	     = nb->extended;  in x25_subscr_ioctl()
369 		x25_subscr.global_facil_mask = nb->global_facil_mask;  in x25_subscr_ioctl()
378 			nb->extended	     = x25_subscr.extended;  in x25_subscr_ioctl()
379 			nb->global_facil_mask = x25_subscr.global_facil_mask;  in x25_subscr_ioctl()
383 	x25_neigh_put(nb);  in x25_subscr_ioctl()
397 	struct x25_neigh *nb;  in x25_link_free()  local
405 		nb = list_entry(entry, struct x25_neigh, node);  in x25_link_free()
406 		dev = nb->dev;  in x25_link_free()
407 		__x25_remove_neigh(nb);  in x25_link_free()