85 		int (*open)(struct iss_net_private *lp);
86 		void (*close)(struct iss_net_private *lp);
87 		int (*read)(struct iss_net_private *lp, struct sk_buff **skb);
88 		int (*write)(struct iss_net_private *lp, struct sk_buff **skb);
90 		int (*poll)(struct iss_net_private *lp);
160 static int tuntap_open(struct iss_net_private *lp)  in tuntap_open()  argument
163 	char *dev_name = lp->tp.info.tuntap.dev_name;  in tuntap_open()
170 		       lp->dev->name, fd, errno);  in tuntap_open()
181 		       lp->dev->name, dev_name, err, errno);  in tuntap_open()
186 	lp->tp.info.tuntap.fd = fd;  in tuntap_open()
190 static void tuntap_close(struct iss_net_private *lp)  in tuntap_close()  argument
192 	simc_close(lp->tp.info.tuntap.fd);  in tuntap_close()
193 	lp->tp.info.tuntap.fd = -1;  in tuntap_close()
196 static int tuntap_read(struct iss_net_private *lp, struct sk_buff **skb)  in tuntap_read()  argument
198 	return simc_read(lp->tp.info.tuntap.fd,  in tuntap_read()
202 static int tuntap_write(struct iss_net_private *lp, struct sk_buff **skb)  in tuntap_write()  argument
204 	return simc_write(lp->tp.info.tuntap.fd, (*skb)->data, (*skb)->len);  in tuntap_write()
212 static int tuntap_poll(struct iss_net_private *lp)  in tuntap_poll()  argument
214 	return simc_poll(lp->tp.info.tuntap.fd);  in tuntap_poll()
221 static int tuntap_probe(struct iss_net_private *lp, int index, char *init)  in tuntap_probe()  argument
223 	struct net_device *dev = lp->dev;  in tuntap_probe()
251 	strlcpy(lp->tp.info.tuntap.dev_name, dev_name,  in tuntap_probe()
252 		sizeof(lp->tp.info.tuntap.dev_name));  in tuntap_probe()
256 	lp->mtu = TRANSPORT_TUNTAP_MTU;  in tuntap_probe()
258 	lp->tp.info.tuntap.fd = -1;  in tuntap_probe()
260 	lp->tp.open = tuntap_open;  in tuntap_probe()
261 	lp->tp.close = tuntap_close;  in tuntap_probe()
262 	lp->tp.read = tuntap_read;  in tuntap_probe()
263 	lp->tp.write = tuntap_write;  in tuntap_probe()
264 	lp->tp.protocol = tuntap_protocol;  in tuntap_probe()
265 	lp->tp.poll = tuntap_poll;  in tuntap_probe()
274 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_rx()  local
280 	if (lp->tp.poll(lp) == 0)  in iss_net_rx()
287 		lp->stats.rx_dropped++;  in iss_net_rx()
297 	pkt_len = lp->tp.read(lp, &skb);  in iss_net_rx()
302 		skb->protocol = lp->tp.protocol(skb);  in iss_net_rx()
304 		lp->stats.rx_bytes += skb->len;  in iss_net_rx()
305 		lp->stats.rx_packets++;  in iss_net_rx()
321 		struct iss_net_private *lp;  in iss_net_poll()  local
323 		lp = list_entry(ele, struct iss_net_private, opened_list);  in iss_net_poll()
325 		if (!netif_running(lp->dev))  in iss_net_poll()
328 		spin_lock(&lp->lock);  in iss_net_poll()
330 		while ((err = iss_net_rx(lp->dev)) > 0)  in iss_net_poll()
333 		spin_unlock(&lp->lock);  in iss_net_poll()
337 			       lp->dev->name, err);  in iss_net_poll()
338 			dev_close(lp->dev);  in iss_net_poll()
351 	struct iss_net_private *lp = from_timer(lp, t, timer);  in iss_net_timer()  local
354 	spin_lock(&lp->lock);  in iss_net_timer()
355 	mod_timer(&lp->timer, jiffies + lp->timer_val);  in iss_net_timer()
356 	spin_unlock(&lp->lock);  in iss_net_timer()
362 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_open()  local
365 	spin_lock_bh(&lp->lock);  in iss_net_open()
367 	err = lp->tp.open(lp);  in iss_net_open()
380 	spin_unlock_bh(&lp->lock);  in iss_net_open()
382 	list_add(&lp->opened_list, &opened);  in iss_net_open()
384 	spin_lock_bh(&lp->lock);  in iss_net_open()
386 	timer_setup(&lp->timer, iss_net_timer, 0);  in iss_net_open()
387 	lp->timer_val = ISS_NET_TIMER_VALUE;  in iss_net_open()
388 	mod_timer(&lp->timer, jiffies + lp->timer_val);  in iss_net_open()
391 	spin_unlock_bh(&lp->lock);  in iss_net_open()
397 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_close()  local
399 	spin_lock_bh(&lp->lock);  in iss_net_close()
405 	del_timer_sync(&lp->timer);  in iss_net_close()
407 	lp->tp.close(lp);  in iss_net_close()
409 	spin_unlock_bh(&lp->lock);  in iss_net_close()
415 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_start_xmit()  local
419 	spin_lock_bh(&lp->lock);  in iss_net_start_xmit()
421 	len = lp->tp.write(lp, &skb);  in iss_net_start_xmit()
424 		lp->stats.tx_packets++;  in iss_net_start_xmit()
425 		lp->stats.tx_bytes += skb->len;  in iss_net_start_xmit()
434 		lp->stats.tx_dropped++;  in iss_net_start_xmit()
441 	spin_unlock_bh(&lp->lock);  in iss_net_start_xmit()
450 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_get_stats()  local
451 	return &lp->stats;  in iss_net_get_stats()
464 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_set_mac()  local
469 	spin_lock_bh(&lp->lock);  in iss_net_set_mac()
471 	spin_unlock_bh(&lp->lock);  in iss_net_set_mac()
508 	struct iss_net_private *lp =  in iss_net_pdev_release()  local
511 	free_netdev(lp->dev);  in iss_net_pdev_release()
517 	struct iss_net_private *lp;  in iss_net_configure()  local
519 	dev = alloc_etherdev(sizeof(*lp));  in iss_net_configure()
527 	lp = netdev_priv(dev);  in iss_net_configure()
528 	*lp = (struct iss_net_private) {  in iss_net_configure()
529 		.device_list		= LIST_HEAD_INIT(lp->device_list),  in iss_net_configure()
530 		.opened_list		= LIST_HEAD_INIT(lp->opened_list),  in iss_net_configure()
535 	spin_lock_init(&lp->lock);  in iss_net_configure()
548 	if (!tuntap_probe(lp, index, init)) {  in iss_net_configure()
565 	list_add(&lp->device_list, &devices);  in iss_net_configure()
568 	lp->pdev.id = index;  in iss_net_configure()
569 	lp->pdev.name = DRIVER_NAME;  in iss_net_configure()
570 	lp->pdev.dev.release = iss_net_pdev_release;  in iss_net_configure()
571 	if (platform_device_register(&lp->pdev))  in iss_net_configure()
573 	SET_NETDEV_DEV(dev, &lp->pdev.dev);  in iss_net_configure()
576 	dev->mtu = lp->mtu;  in iss_net_configure()
584 		platform_device_unregister(&lp->pdev);  in iss_net_configure()
589 	timer_setup(&lp->tl, iss_net_user_timer_expire, 0);  in iss_net_configure()