88 		int (*open)(struct iss_net_private *lp);
89 		void (*close)(struct iss_net_private *lp);
90 		int (*read)(struct iss_net_private *lp, struct sk_buff **skb);
91 		int (*write)(struct iss_net_private *lp, struct sk_buff **skb);
93 		int (*poll)(struct iss_net_private *lp);
163 static int tuntap_open(struct iss_net_private *lp)  in tuntap_open()  argument
166 	char *dev_name = lp->tp.info.tuntap.dev_name;  in tuntap_open()
173 		       lp->dev->name, fd, errno);  in tuntap_open()
184 		       lp->dev->name, dev_name, err, errno);  in tuntap_open()
189 	lp->tp.info.tuntap.fd = fd;  in tuntap_open()
193 static void tuntap_close(struct iss_net_private *lp)  in tuntap_close()  argument
195 	simc_close(lp->tp.info.tuntap.fd);  in tuntap_close()
196 	lp->tp.info.tuntap.fd = -1;  in tuntap_close()
199 static int tuntap_read(struct iss_net_private *lp, struct sk_buff **skb)  in tuntap_read()  argument
201 	return simc_read(lp->tp.info.tuntap.fd,  in tuntap_read()
205 static int tuntap_write(struct iss_net_private *lp, struct sk_buff **skb)  in tuntap_write()  argument
207 	return simc_write(lp->tp.info.tuntap.fd, (*skb)->data, (*skb)->len);  in tuntap_write()
215 static int tuntap_poll(struct iss_net_private *lp)  in tuntap_poll()  argument
217 	return simc_poll(lp->tp.info.tuntap.fd);  in tuntap_poll()
224 static int tuntap_probe(struct iss_net_private *lp, int index, char *init)  in tuntap_probe()  argument
226 	struct net_device *dev = lp->dev;  in tuntap_probe()
254 	strlcpy(lp->tp.info.tuntap.dev_name, dev_name,  in tuntap_probe()
255 		sizeof(lp->tp.info.tuntap.dev_name));  in tuntap_probe()
259 	lp->mtu = TRANSPORT_TUNTAP_MTU;  in tuntap_probe()
261 	lp->tp.info.tuntap.fd = -1;  in tuntap_probe()
263 	lp->tp.open = tuntap_open;  in tuntap_probe()
264 	lp->tp.close = tuntap_close;  in tuntap_probe()
265 	lp->tp.read = tuntap_read;  in tuntap_probe()
266 	lp->tp.write = tuntap_write;  in tuntap_probe()
267 	lp->tp.protocol = tuntap_protocol;  in tuntap_probe()
268 	lp->tp.poll = tuntap_poll;  in tuntap_probe()
277 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_rx()  local
283 	if (lp->tp.poll(lp) == 0)  in iss_net_rx()
290 		lp->stats.rx_dropped++;  in iss_net_rx()
300 	pkt_len = lp->tp.read(lp, &skb);  in iss_net_rx()
305 		skb->protocol = lp->tp.protocol(skb);  in iss_net_rx()
307 		lp->stats.rx_bytes += skb->len;  in iss_net_rx()
308 		lp->stats.rx_packets++;  in iss_net_rx()
324 		struct iss_net_private *lp;  in iss_net_poll()  local
326 		lp = list_entry(ele, struct iss_net_private, opened_list);  in iss_net_poll()
328 		if (!netif_running(lp->dev))  in iss_net_poll()
331 		spin_lock(&lp->lock);  in iss_net_poll()
333 		while ((err = iss_net_rx(lp->dev)) > 0)  in iss_net_poll()
336 		spin_unlock(&lp->lock);  in iss_net_poll()
340 			       lp->dev->name, err);  in iss_net_poll()
341 			dev_close(lp->dev);  in iss_net_poll()
354 	struct iss_net_private *lp = (struct iss_net_private *)priv;  in iss_net_timer()  local
357 	spin_lock(&lp->lock);  in iss_net_timer()
358 	mod_timer(&lp->timer, jiffies + lp->timer_val);  in iss_net_timer()
359 	spin_unlock(&lp->lock);  in iss_net_timer()
365 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_open()  local
368 	spin_lock_bh(&lp->lock);  in iss_net_open()
370 	err = lp->tp.open(lp);  in iss_net_open()
383 	spin_unlock_bh(&lp->lock);  in iss_net_open()
385 	list_add(&lp->opened_list, &opened);  in iss_net_open()
387 	spin_lock_bh(&lp->lock);  in iss_net_open()
389 	init_timer(&lp->timer);  in iss_net_open()
390 	lp->timer_val = ISS_NET_TIMER_VALUE;  in iss_net_open()
391 	lp->timer.data = (unsigned long) lp;  in iss_net_open()
392 	lp->timer.function = iss_net_timer;  in iss_net_open()
393 	mod_timer(&lp->timer, jiffies + lp->timer_val);  in iss_net_open()
396 	spin_unlock_bh(&lp->lock);  in iss_net_open()
402 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_close()  local
404 	spin_lock_bh(&lp->lock);  in iss_net_close()
410 	del_timer_sync(&lp->timer);  in iss_net_close()
412 	lp->tp.close(lp);  in iss_net_close()
414 	spin_unlock_bh(&lp->lock);  in iss_net_close()
420 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_start_xmit()  local
424 	spin_lock_bh(&lp->lock);  in iss_net_start_xmit()
426 	len = lp->tp.write(lp, &skb);  in iss_net_start_xmit()
429 		lp->stats.tx_packets++;  in iss_net_start_xmit()
430 		lp->stats.tx_bytes += skb->len;  in iss_net_start_xmit()
439 		lp->stats.tx_dropped++;  in iss_net_start_xmit()
446 	spin_unlock_bh(&lp->lock);  in iss_net_start_xmit()
455 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_get_stats()  local
456 	return &lp->stats;  in iss_net_get_stats()
469 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_set_mac()  local
474 	spin_lock_bh(&lp->lock);  in iss_net_set_mac()
476 	spin_unlock_bh(&lp->lock);  in iss_net_set_mac()
513 	struct iss_net_private *lp;  in iss_net_configure()  local
516 	dev = alloc_etherdev(sizeof(*lp));  in iss_net_configure()
524 	lp = netdev_priv(dev);  in iss_net_configure()
525 	*lp = (struct iss_net_private) {  in iss_net_configure()
526 		.device_list		= LIST_HEAD_INIT(lp->device_list),  in iss_net_configure()
527 		.opened_list		= LIST_HEAD_INIT(lp->opened_list),  in iss_net_configure()
532 	spin_lock_init(&lp->lock);  in iss_net_configure()
545 	if (!tuntap_probe(lp, index, init)) {  in iss_net_configure()
561 	list_add(&lp->device_list, &devices);  in iss_net_configure()
564 	lp->pdev.id = index;  in iss_net_configure()
565 	lp->pdev.name = DRIVER_NAME;  in iss_net_configure()
566 	platform_device_register(&lp->pdev);  in iss_net_configure()
567 	SET_NETDEV_DEV(dev, &lp->pdev.dev);  in iss_net_configure()
570 	dev->mtu = lp->mtu;  in iss_net_configure()
585 	init_timer(&lp->tl);  in iss_net_configure()
586 	lp->tl.function = iss_net_user_timer_expire;  in iss_net_configure()