net/ipa/ipa_modem.c

44  * @work:	Work structure used to wake the modem netdev TX queue
54 static int ipa_open(struct net_device *netdev)
56 	struct ipa_priv *priv = netdev_priv(netdev);
74 	netif_start_queue(netdev);
90 static int ipa_stop(struct net_device *netdev)
92 	struct ipa_priv *priv = netdev_priv(netdev);
102 	netif_stop_queue(netdev);
115  * @netdev:	Network device
125 ipa_start_xmit(struct sk_buff *skb, struct net_device *netdev)
127 	struct net_device_stats *stats = &netdev->stats;
128 	struct ipa_priv *priv = netdev_priv(netdev);
159 	netif_stop_queue(netdev);
166 			netif_wake_queue(netdev);
176 	netif_wake_queue(netdev);
201 void ipa_modem_skb_rx(struct net_device *netdev, struct sk_buff *skb)
203 	struct net_device_stats *stats = &netdev->stats;
206 		skb->dev = netdev;
223 /** ipa_modem_netdev_setup() - netdev setup function for the modem */
224 static void ipa_modem_netdev_setup(struct net_device *netdev)
226 	netdev->netdev_ops = &ipa_modem_ops;
228 	netdev->header_ops = NULL;
229 	netdev->type = ARPHRD_RAWIP;
230 	netdev->hard_header_len = 0;
231 	netdev->min_header_len = ETH_HLEN;
232 	netdev->min_mtu = ETH_MIN_MTU;
233 	netdev->max_mtu = IPA_MTU;
234 	netdev->mtu = netdev->max_mtu;
235 	netdev->addr_len = 0;
236 	netdev->tx_queue_len = DEFAULT_TX_QUEUE_LEN;
237 	netdev->flags &= ~(IFF_BROADCAST | IFF_MULTICAST);
238 	netdev->priv_flags |= IFF_TX_SKB_SHARING;
239 	eth_broadcast_addr(netdev->broadcast);
242 	netdev->needed_headroom = sizeof(struct rmnet_map_header);
243 	netdev->needed_tailroom = IPA_NETDEV_TAILROOM;
244 	netdev->watchdog_timeo = IPA_NETDEV_TIMEOUT * HZ;
245 	netdev->hw_features = NETIF_F_SG;
249  * @netdev:	Network device
253 void ipa_modem_suspend(struct net_device *netdev)
257 	if (!(netdev->flags & IFF_UP))
260 	priv = netdev_priv(netdev);
266  * ipa_modem_wake_queue_work() - enable modem netdev queue
280 	netif_wake_queue(priv->tx->netdev);
288 void ipa_modem_resume(struct net_device *netdev)
292 	if (!(netdev->flags & IFF_UP))
295 	priv = netdev_priv(netdev);
306 	struct net_device *netdev;
318 	netdev = alloc_netdev(sizeof(struct ipa_priv), IPA_NETDEV_NAME,
320 	if (!netdev) {
325 	SET_NETDEV_DEV(netdev, ipa->dev);
326 	priv = netdev_priv(netdev);
332 	priv->tx->netdev = netdev;
333 	priv->rx->netdev = netdev;
335 	ipa->modem_netdev = netdev;
337 	ret = register_netdev(netdev);
340 		priv->rx->netdev = NULL;
341 		priv->tx->netdev = NULL;
343 		free_netdev(netdev);
358 	struct net_device *netdev = ipa->modem_netdev;
373 	/* Clean up the netdev and endpoints if it was started */
374 	if (netdev) {
375 		struct ipa_priv *priv = netdev_priv(netdev);
379 		if (netdev->flags & IFF_UP)
380 			(void)ipa_stop(netdev);
381 		unregister_netdev(netdev);
384 		priv->rx->netdev = NULL;
385 		priv->tx->netdev = NULL;
387 		free_netdev(netdev);