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);
159 static int tuntap_open(struct iss_net_private *lp)  in tuntap_open()  argument
162 	char *dev_name = lp->tp.info.tuntap.dev_name;  in tuntap_open()
169 		       lp->dev->name, fd, errno);  in tuntap_open()
180 		       lp->dev->name, dev_name, err, errno);  in tuntap_open()
185 	lp->tp.info.tuntap.fd = fd;  in tuntap_open()
189 static void tuntap_close(struct iss_net_private *lp)  in tuntap_close()  argument
191 	simc_close(lp->tp.info.tuntap.fd);  in tuntap_close()
192 	lp->tp.info.tuntap.fd = -1;  in tuntap_close()
195 static int tuntap_read(struct iss_net_private *lp, struct sk_buff **skb)  in tuntap_read()  argument
197 	return simc_read(lp->tp.info.tuntap.fd,  in tuntap_read()
201 static int tuntap_write(struct iss_net_private *lp, struct sk_buff **skb)  in tuntap_write()  argument
203 	return simc_write(lp->tp.info.tuntap.fd, (*skb)->data, (*skb)->len);  in tuntap_write()
211 static int tuntap_poll(struct iss_net_private *lp)  in tuntap_poll()  argument
213 	return simc_poll(lp->tp.info.tuntap.fd);  in tuntap_poll()
220 static int tuntap_probe(struct iss_net_private *lp, int index, char *init)  in tuntap_probe()  argument
222 	struct net_device *dev = lp->dev;  in tuntap_probe()
250 	strlcpy(lp->tp.info.tuntap.dev_name, dev_name,  in tuntap_probe()
251 		sizeof(lp->tp.info.tuntap.dev_name));  in tuntap_probe()
255 	lp->mtu = TRANSPORT_TUNTAP_MTU;  in tuntap_probe()
257 	lp->tp.info.tuntap.fd = -1;  in tuntap_probe()
259 	lp->tp.open = tuntap_open;  in tuntap_probe()
260 	lp->tp.close = tuntap_close;  in tuntap_probe()
261 	lp->tp.read = tuntap_read;  in tuntap_probe()
262 	lp->tp.write = tuntap_write;  in tuntap_probe()
263 	lp->tp.protocol = tuntap_protocol;  in tuntap_probe()
264 	lp->tp.poll = tuntap_poll;  in tuntap_probe()
273 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_rx()  local
279 	if (lp->tp.poll(lp) == 0)  in iss_net_rx()
286 		lp->stats.rx_dropped++;  in iss_net_rx()
296 	pkt_len = lp->tp.read(lp, &skb);  in iss_net_rx()
301 		skb->protocol = lp->tp.protocol(skb);  in iss_net_rx()
303 		lp->stats.rx_bytes += skb->len;  in iss_net_rx()
304 		lp->stats.rx_packets++;  in iss_net_rx()
320 		struct iss_net_private *lp;  in iss_net_poll()  local
322 		lp = list_entry(ele, struct iss_net_private, opened_list);  in iss_net_poll()
324 		if (!netif_running(lp->dev))  in iss_net_poll()
327 		spin_lock(&lp->lock);  in iss_net_poll()
329 		while ((err = iss_net_rx(lp->dev)) > 0)  in iss_net_poll()
332 		spin_unlock(&lp->lock);  in iss_net_poll()
336 			       lp->dev->name, err);  in iss_net_poll()
337 			dev_close(lp->dev);  in iss_net_poll()
350 	struct iss_net_private *lp = (struct iss_net_private *)priv;  in iss_net_timer()  local
353 	spin_lock(&lp->lock);  in iss_net_timer()
354 	mod_timer(&lp->timer, jiffies + lp->timer_val);  in iss_net_timer()
355 	spin_unlock(&lp->lock);  in iss_net_timer()
361 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_open()  local
364 	spin_lock_bh(&lp->lock);  in iss_net_open()
366 	err = lp->tp.open(lp);  in iss_net_open()
379 	spin_unlock_bh(&lp->lock);  in iss_net_open()
381 	list_add(&lp->opened_list, &opened);  in iss_net_open()
383 	spin_lock_bh(&lp->lock);  in iss_net_open()
385 	init_timer(&lp->timer);  in iss_net_open()
386 	lp->timer_val = ISS_NET_TIMER_VALUE;  in iss_net_open()
387 	lp->timer.data = (unsigned long) lp;  in iss_net_open()
388 	lp->timer.function = iss_net_timer;  in iss_net_open()
389 	mod_timer(&lp->timer, jiffies + lp->timer_val);  in iss_net_open()
392 	spin_unlock_bh(&lp->lock);  in iss_net_open()
398 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_close()  local
400 	spin_lock_bh(&lp->lock);  in iss_net_close()
406 	del_timer_sync(&lp->timer);  in iss_net_close()
408 	lp->tp.close(lp);  in iss_net_close()
410 	spin_unlock_bh(&lp->lock);  in iss_net_close()
416 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_start_xmit()  local
420 	spin_lock_bh(&lp->lock);  in iss_net_start_xmit()
422 	len = lp->tp.write(lp, &skb);  in iss_net_start_xmit()
425 		lp->stats.tx_packets++;  in iss_net_start_xmit()
426 		lp->stats.tx_bytes += skb->len;  in iss_net_start_xmit()
435 		lp->stats.tx_dropped++;  in iss_net_start_xmit()
442 	spin_unlock_bh(&lp->lock);  in iss_net_start_xmit()
451 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_get_stats()  local
452 	return &lp->stats;  in iss_net_get_stats()
465 	struct iss_net_private *lp = netdev_priv(dev);  in iss_net_set_mac()  local
470 	spin_lock_bh(&lp->lock);  in iss_net_set_mac()
472 	spin_unlock_bh(&lp->lock);  in iss_net_set_mac()
509 	struct iss_net_private *lp;  in iss_net_configure()  local
512 	dev = alloc_etherdev(sizeof(*lp));  in iss_net_configure()
520 	lp = netdev_priv(dev);  in iss_net_configure()
521 	*lp = (struct iss_net_private) {  in iss_net_configure()
522 		.device_list		= LIST_HEAD_INIT(lp->device_list),  in iss_net_configure()
523 		.opened_list		= LIST_HEAD_INIT(lp->opened_list),  in iss_net_configure()
528 	spin_lock_init(&lp->lock);  in iss_net_configure()
541 	if (!tuntap_probe(lp, index, init)) {  in iss_net_configure()
557 	list_add(&lp->device_list, &devices);  in iss_net_configure()
560 	lp->pdev.id = index;  in iss_net_configure()
561 	lp->pdev.name = DRIVER_NAME;  in iss_net_configure()
562 	platform_device_register(&lp->pdev);  in iss_net_configure()
563 	SET_NETDEV_DEV(dev, &lp->pdev.dev);  in iss_net_configure()
566 	dev->mtu = lp->mtu;  in iss_net_configure()
581 	init_timer(&lp->tl);  in iss_net_configure()
582 	lp->tl.function = iss_net_user_timer_expire;  in iss_net_configure()