36 static void x25_transmit_restart_confirmation(struct x25_neigh *nb);
37 static void x25_transmit_restart_request(struct x25_neigh *nb);
42 static inline void x25_start_t20timer(struct x25_neigh *nb)  in x25_start_t20timer()  argument
44 	mod_timer(&nb->t20timer, jiffies + nb->t20);  in x25_start_t20timer()
49 	struct x25_neigh *nb = from_timer(nb, t, t20timer);  in x25_t20timer_expiry()  local
51 	x25_transmit_restart_request(nb);  in x25_t20timer_expiry()
53 	x25_start_t20timer(nb);  in x25_t20timer_expiry()
56 static inline void x25_stop_t20timer(struct x25_neigh *nb)  in x25_stop_t20timer()  argument
58 	del_timer(&nb->t20timer);  in x25_stop_t20timer()
64 void x25_link_control(struct sk_buff *skb, struct x25_neigh *nb,  in x25_link_control()  argument
71 		switch (nb->state) {  in x25_link_control()
76 			nb->state = X25_LINK_STATE_3;  in x25_link_control()
77 			x25_transmit_restart_confirmation(nb);  in x25_link_control()
80 			x25_stop_t20timer(nb);  in x25_link_control()
81 			nb->state = X25_LINK_STATE_3;  in x25_link_control()
85 			x25_kill_by_neigh(nb);  in x25_link_control()
87 			x25_transmit_restart_confirmation(nb);  in x25_link_control()
93 		switch (nb->state) {  in x25_link_control()
95 			x25_stop_t20timer(nb);  in x25_link_control()
96 			nb->state = X25_LINK_STATE_3;  in x25_link_control()
100 			x25_kill_by_neigh(nb);  in x25_link_control()
102 			x25_transmit_restart_request(nb);  in x25_link_control()
103 			nb->state = X25_LINK_STATE_2;  in x25_link_control()
104 			x25_start_t20timer(nb);  in x25_link_control()
124 	if (nb->state == X25_LINK_STATE_3)  in x25_link_control()
125 		while ((skbn = skb_dequeue(&nb->queue)) != NULL)  in x25_link_control()
126 			x25_send_frame(skbn, nb);  in x25_link_control()
132 static void x25_transmit_restart_request(struct x25_neigh *nb)  in x25_transmit_restart_request()  argument
145 	*dptr++ = nb->extended ? X25_GFI_EXTSEQ : X25_GFI_STDSEQ;  in x25_transmit_restart_request()
153 	x25_send_frame(skb, nb);  in x25_transmit_restart_request()
159 static void x25_transmit_restart_confirmation(struct x25_neigh *nb)  in x25_transmit_restart_confirmation()  argument
172 	*dptr++ = nb->extended ? X25_GFI_EXTSEQ : X25_GFI_STDSEQ;  in x25_transmit_restart_confirmation()
178 	x25_send_frame(skb, nb);  in x25_transmit_restart_confirmation()
185 void x25_transmit_clear_request(struct x25_neigh *nb, unsigned int lci,  in x25_transmit_clear_request()  argument
199 	*dptr++ = ((lci >> 8) & 0x0F) | (nb->extended ?  in x25_transmit_clear_request()
209 	x25_send_frame(skb, nb);  in x25_transmit_clear_request()
212 void x25_transmit_link(struct sk_buff *skb, struct x25_neigh *nb)  in x25_transmit_link()  argument
214 	switch (nb->state) {  in x25_transmit_link()
216 		skb_queue_tail(&nb->queue, skb);  in x25_transmit_link()
217 		nb->state = X25_LINK_STATE_1;  in x25_transmit_link()
218 		x25_establish_link(nb);  in x25_transmit_link()
222 		skb_queue_tail(&nb->queue, skb);  in x25_transmit_link()
225 		x25_send_frame(skb, nb);  in x25_transmit_link()
233 void x25_link_established(struct x25_neigh *nb)  in x25_link_established()  argument
235 	switch (nb->state) {  in x25_link_established()
238 		x25_transmit_restart_request(nb);  in x25_link_established()
239 		nb->state = X25_LINK_STATE_2;  in x25_link_established()
240 		x25_start_t20timer(nb);  in x25_link_established()
250 void x25_link_terminated(struct x25_neigh *nb)  in x25_link_terminated()  argument
252 	nb->state = X25_LINK_STATE_0;  in x25_link_terminated()
253 	skb_queue_purge(&nb->queue);  in x25_link_terminated()
254 	x25_stop_t20timer(nb);  in x25_link_terminated()
257 	x25_kill_by_neigh(nb);  in x25_link_terminated()
265 	struct x25_neigh *nb = kmalloc(sizeof(*nb), GFP_ATOMIC);  in x25_link_device_up()  local
267 	if (!nb)  in x25_link_device_up()
270 	skb_queue_head_init(&nb->queue);  in x25_link_device_up()
271 	timer_setup(&nb->t20timer, x25_t20timer_expiry, 0);  in x25_link_device_up()
274 	nb->dev      = dev;  in x25_link_device_up()
275 	nb->state    = X25_LINK_STATE_0;  in x25_link_device_up()
276 	nb->extended = 0;  in x25_link_device_up()
280 	nb->global_facil_mask = X25_MASK_REVERSE |  in x25_link_device_up()
284 	nb->t20      = sysctl_x25_restart_request_timeout;  in x25_link_device_up()
285 	refcount_set(&nb->refcnt, 1);  in x25_link_device_up()
288 	list_add(&nb->node, &x25_neigh_list);  in x25_link_device_up()
299 static void __x25_remove_neigh(struct x25_neigh *nb)  in __x25_remove_neigh()  argument
301 	if (nb->node.next) {  in __x25_remove_neigh()
302 		list_del(&nb->node);  in __x25_remove_neigh()
303 		x25_neigh_put(nb);  in __x25_remove_neigh()
312 	struct x25_neigh *nb;  in x25_link_device_down()  local
318 		nb = list_entry(entry, struct x25_neigh, node);  in x25_link_device_down()
320 		if (nb->dev == dev) {  in x25_link_device_down()
321 			__x25_remove_neigh(nb);  in x25_link_device_down()
334 	struct x25_neigh *nb, *use = NULL;  in x25_get_neigh()  local
337 	list_for_each_entry(nb, &x25_neigh_list, node) {  in x25_get_neigh()
338 		if (nb->dev == dev) {  in x25_get_neigh()
339 			use = nb;  in x25_get_neigh()
356 	struct x25_neigh *nb;  in x25_subscr_ioctl()  local
371 	if ((nb = x25_get_neigh(dev)) == NULL)  in x25_subscr_ioctl()
378 		x25_subscr.extended	     = nb->extended;  in x25_subscr_ioctl()
379 		x25_subscr.global_facil_mask = nb->global_facil_mask;  in x25_subscr_ioctl()
388 			nb->extended	     = x25_subscr.extended;  in x25_subscr_ioctl()
389 			nb->global_facil_mask = x25_subscr.global_facil_mask;  in x25_subscr_ioctl()
393 	x25_neigh_put(nb);  in x25_subscr_ioctl()
407 	struct x25_neigh *nb;  in x25_link_free()  local
415 		nb = list_entry(entry, struct x25_neigh, node);  in x25_link_free()
416 		dev = nb->dev;  in x25_link_free()
417 		__x25_remove_neigh(nb);  in x25_link_free()