forked from Minki/linux
netdevice wanrouter: Convert directly reference of netdev->priv
1. Make device driver to allocate memory for netdev. 2. Convert all directly reference of netdev->priv to netdev_priv(). Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wang Chen
David S. Miller
parent
826dd0e1e3
commit
7be6065b39
@ -199,6 +199,8 @@ static struct net_device *cycx_x25_get_dev_by_lcn(struct wan_device *wandev,
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static struct net_device *
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cycx_x25_get_dev_by_dte_addr(struct wan_device *wandev, char *dte);
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static void cycx_x25_chan_setup(struct net_device *dev);
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#ifdef CYCLOMX_X25_DEBUG
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static void hex_dump(char *msg, unsigned char *p, int len);
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static void cycx_x25_dump_config(struct cycx_x25_config *conf);
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@ -353,6 +355,12 @@ static int cycx_wan_update(struct wan_device *wandev)
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return 0;
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}
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/* callback to initialize device */
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static void cycx_x25_chan_setup(struct net_device *dev)
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{
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dev->init = cycx_netdevice_init;
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}
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/* Create new logical channel.
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* This routine is called by the router when ROUTER_IFNEW IOCTL is being
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* handled.
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@ -376,11 +384,12 @@ static int cycx_wan_new_if(struct wan_device *wandev, struct net_device *dev,
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return -EINVAL;
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}
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/* allocate and initialize private data */
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chan = kzalloc(sizeof(struct cycx_x25_channel), GFP_KERNEL);
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if (!chan)
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dev = alloc_netdev(sizeof(struct cycx_x25_channel), conf->name,
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cycx_x25_chan_setup);
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if (!dev)
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return -ENOMEM;
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chan = netdev_priv(dev);
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strcpy(chan->name, conf->name);
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chan->card = card;
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chan->link = conf->port;
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@ -396,14 +405,14 @@ static int cycx_wan_new_if(struct wan_device *wandev, struct net_device *dev,
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if (len > WAN_ADDRESS_SZ) {
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printk(KERN_ERR "%s: %s local addr too long!\n",
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wandev->name, chan->name);
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kfree(chan);
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return -EINVAL;
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err = -EINVAL;
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goto error;
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} else {
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chan->local_addr = kmalloc(len + 1, GFP_KERNEL);
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if (!chan->local_addr) {
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kfree(chan);
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return -ENOMEM;
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err = -ENOMEM;
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goto error;
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}
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}
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@ -429,41 +438,31 @@ static int cycx_wan_new_if(struct wan_device *wandev, struct net_device *dev,
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"%s: PVC %u is out of range on interface %s!\n",
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wandev->name, lcn, chan->name);
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err = -EINVAL;
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goto error;
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}
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} else {
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printk(KERN_ERR "%s: invalid media address on interface %s!\n",
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wandev->name, chan->name);
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err = -EINVAL;
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goto error;
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}
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if (err) {
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kfree(chan->local_addr);
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kfree(chan);
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return err;
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}
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/* prepare network device data space for registration */
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strcpy(dev->name, chan->name);
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dev->init = cycx_netdevice_init;
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dev->priv = chan;
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return 0;
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error:
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free_netdev(dev);
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return err;
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}
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/* Delete logical channel. */
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static int cycx_wan_del_if(struct wan_device *wandev, struct net_device *dev)
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{
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if (dev->priv) {
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struct cycx_x25_channel *chan = dev->priv;
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struct cycx_x25_channel *chan = netdev_priv(dev);
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if (chan->svc) {
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kfree(chan->local_addr);
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if (chan->state == WAN_CONNECTED)
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del_timer(&chan->timer);
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}
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kfree(chan);
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dev->priv = NULL;
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if (chan->svc) {
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kfree(chan->local_addr);
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if (chan->state == WAN_CONNECTED)
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del_timer(&chan->timer);
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}
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return 0;
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@ -484,7 +483,7 @@ static const struct header_ops cycx_header_ops = {
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* registration. */
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static int cycx_netdevice_init(struct net_device *dev)
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{
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struct cycx_x25_channel *chan = dev->priv;
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struct cycx_x25_channel *chan = netdev_priv(dev);
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struct cycx_device *card = chan->card;
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struct wan_device *wandev = &card->wandev;
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@ -542,7 +541,7 @@ static int cycx_netdevice_open(struct net_device *dev)
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* o if there's no more open channels then disconnect physical link. */
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static int cycx_netdevice_stop(struct net_device *dev)
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{
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struct cycx_x25_channel *chan = dev->priv;
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struct cycx_x25_channel *chan = netdev_priv(dev);
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netif_stop_queue(dev);
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@ -596,7 +595,7 @@ static int cycx_netdevice_rebuild_header(struct sk_buff *skb)
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static int cycx_netdevice_hard_start_xmit(struct sk_buff *skb,
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struct net_device *dev)
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{
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struct cycx_x25_channel *chan = dev->priv;
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struct cycx_x25_channel *chan = netdev_priv(dev);
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struct cycx_device *card = chan->card;
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if (!chan->svc)
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@ -670,7 +669,7 @@ free_packet:
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* Return a pointer to struct net_device_stats */
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static struct net_device_stats *cycx_netdevice_get_stats(struct net_device *dev)
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{
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struct cycx_x25_channel *chan = dev->priv;
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struct cycx_x25_channel *chan = netdev_priv(dev);
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return chan ? &chan->ifstats : NULL;
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}
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@ -783,7 +782,7 @@ static void cycx_x25_irq_rx(struct cycx_device *card, struct cycx_x25_cmd *cmd)
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return;
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}
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chan = dev->priv;
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chan = netdev_priv(dev);
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reset_timer(dev);
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if (chan->drop_sequence) {
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@ -883,7 +882,7 @@ static void cycx_x25_irq_connect(struct cycx_device *card,
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return;
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}
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chan = dev->priv;
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chan = netdev_priv(dev);
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chan->lcn = lcn;
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cycx_x25_connect_response(card, chan);
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cycx_x25_set_chan_state(dev, WAN_CONNECTED);
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@ -913,7 +912,7 @@ static void cycx_x25_irq_connect_confirm(struct cycx_device *card,
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}
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clear_bit(--key, (void*)&card->u.x.connection_keys);
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chan = dev->priv;
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chan = netdev_priv(dev);
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chan->lcn = lcn;
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cycx_x25_set_chan_state(dev, WAN_CONNECTED);
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}
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@ -953,7 +952,7 @@ static void cycx_x25_irq_disconnect(struct cycx_device *card,
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dev = cycx_x25_get_dev_by_lcn(wandev, lcn);
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if (dev) {
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struct cycx_x25_channel *chan = dev->priv;
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struct cycx_x25_channel *chan = netdev_priv(dev);
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cycx_x25_disconnect_response(card, chan->link, lcn);
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cycx_x25_set_chan_state(dev, WAN_DISCONNECTED);
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@ -1301,7 +1300,7 @@ static struct net_device *cycx_x25_get_dev_by_lcn(struct wan_device *wandev,
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struct cycx_x25_channel *chan;
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while (dev) {
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chan = (struct cycx_x25_channel*)dev->priv;
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chan = netdev_priv(dev);
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if (chan->lcn == lcn)
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break;
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@ -1318,7 +1317,7 @@ static struct net_device *
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struct cycx_x25_channel *chan;
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while (dev) {
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chan = (struct cycx_x25_channel*)dev->priv;
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chan = netdev_priv(dev);
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if (!strcmp(chan->addr, dte))
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break;
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@ -1336,7 +1335,7 @@ static struct net_device *
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* <0 failure */
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static int cycx_x25_chan_connect(struct net_device *dev)
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{
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struct cycx_x25_channel *chan = dev->priv;
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struct cycx_x25_channel *chan = netdev_priv(dev);
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struct cycx_device *card = chan->card;
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if (chan->svc) {
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@ -1361,7 +1360,7 @@ static int cycx_x25_chan_connect(struct net_device *dev)
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* o if SVC then clear X.25 call */
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static void cycx_x25_chan_disconnect(struct net_device *dev)
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{
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struct cycx_x25_channel *chan = dev->priv;
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struct cycx_x25_channel *chan = netdev_priv(dev);
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if (chan->svc) {
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x25_clear_call(chan->card, chan->link, chan->lcn, 0, 0);
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@ -1374,7 +1373,7 @@ static void cycx_x25_chan_disconnect(struct net_device *dev)
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static void cycx_x25_chan_timer(unsigned long d)
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{
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struct net_device *dev = (struct net_device *)d;
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struct cycx_x25_channel *chan = dev->priv;
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struct cycx_x25_channel *chan = netdev_priv(dev);
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if (chan->state == WAN_CONNECTED)
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cycx_x25_chan_disconnect(dev);
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@ -1386,7 +1385,7 @@ static void cycx_x25_chan_timer(unsigned long d)
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/* Set logical channel state. */
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static void cycx_x25_set_chan_state(struct net_device *dev, u8 state)
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{
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struct cycx_x25_channel *chan = dev->priv;
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struct cycx_x25_channel *chan = netdev_priv(dev);
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struct cycx_device *card = chan->card;
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unsigned long flags;
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char *string_state = NULL;
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@ -1452,7 +1451,7 @@ static void cycx_x25_set_chan_state(struct net_device *dev, u8 state)
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* to the router. */
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static int cycx_x25_chan_send(struct net_device *dev, struct sk_buff *skb)
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{
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struct cycx_x25_channel *chan = dev->priv;
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struct cycx_x25_channel *chan = netdev_priv(dev);
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struct cycx_device *card = chan->card;
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int bitm = 0; /* final packet */
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unsigned len = skb->len;
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@ -1545,7 +1544,7 @@ static unsigned dec_to_uint(u8 *str, int len)
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static void reset_timer(struct net_device *dev)
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{
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struct cycx_x25_channel *chan = dev->priv;
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struct cycx_x25_channel *chan = netdev_priv(dev);
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if (chan->svc)
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mod_timer(&chan->timer, jiffies+chan->idle_tmout*HZ);
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@ -1598,7 +1597,7 @@ static void cycx_x25_dump_devs(struct wan_device *wandev)
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printk(KERN_INFO "---------------------------------------\n");
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while(dev) {
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struct cycx_x25_channel *chan = dev->priv;
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struct cycx_x25_channel *chan = netdev_priv(dev);
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printk(KERN_INFO "%-5.5s %-15.15s %d ETH_P_%s\n",
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chan->name, chan->addr, netif_queue_stopped(dev),
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@ -60,6 +60,8 @@
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#define KMEM_SAFETYZONE 8
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#define DEV_TO_SLAVE(dev) (*((struct net_device **)netdev_priv(dev)))
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/*
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* Function Prototypes
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*/
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@ -511,7 +513,7 @@ static int wanrouter_device_shutdown(struct wan_device *wandev)
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if (err)
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return err;
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/* The above function deallocates the current dev
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* structure. Therefore, we cannot use dev->priv
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* structure. Therefore, we cannot use netdev_priv(dev)
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* as the next element: wandev->dev points to the
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* next element */
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dev = wandev->dev;
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@ -589,10 +591,6 @@ static int wanrouter_device_new_if(struct wan_device *wandev,
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err = -EPROTONOSUPPORT;
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goto out;
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} else {
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dev = kzalloc(sizeof(struct net_device), GFP_KERNEL);
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err = -ENOBUFS;
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if (dev == NULL)
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goto out;
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err = wandev->new_if(wandev, dev, cnf);
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}
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@ -622,10 +620,9 @@ static int wanrouter_device_new_if(struct wan_device *wandev,
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wandev->dev = dev;
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} else {
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for (slave=wandev->dev;
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*((struct net_device **)slave->priv);
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slave = *((struct net_device **)slave->priv));
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*((struct net_device **)slave->priv) = dev;
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DEV_TO_SLAVE(slave);
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slave = DEV_TO_SLAVE(slave))
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DEV_TO_SLAVE(slave) = dev;
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}
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++wandev->ndev;
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@ -636,15 +633,9 @@ static int wanrouter_device_new_if(struct wan_device *wandev,
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}
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if (wandev->del_if)
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wandev->del_if(wandev, dev);
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free_netdev(dev);
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}
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/* This code has moved from del_if() function */
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kfree(dev->priv);
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dev->priv = NULL;
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/* Sync PPP is disabled */
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if (cnf->config_id != WANCONFIG_MPPP)
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kfree(dev);
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out:
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kfree(cnf);
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return err;
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@ -734,7 +725,7 @@ static int wanrouter_delete_interface(struct wan_device *wandev, char *name)
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dev = wandev->dev;
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prev = NULL;
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while (dev && strcmp(name, dev->name)) {
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struct net_device **slave = dev->priv;
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struct net_device **slave = netdev_priv(dev);
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prev = dev;
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dev = *slave;
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}
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@ -751,12 +742,12 @@ static int wanrouter_delete_interface(struct wan_device *wandev, char *name)
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lock_adapter_irq(&wandev->lock, &smp_flags);
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if (prev) {
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struct net_device **prev_slave = prev->priv;
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struct net_device **slave = dev->priv;
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struct net_device **prev_slave = netdev_priv(prev);
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struct net_device **slave = netdev_priv(dev);
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*prev_slave = *slave;
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} else {
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struct net_device **slave = dev->priv;
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struct net_device **slave = netdev_priv(dev);
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wandev->dev = *slave;
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}
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--wandev->ndev;
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@ -764,11 +755,6 @@ static int wanrouter_delete_interface(struct wan_device *wandev, char *name)
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printk(KERN_INFO "%s: unregistering '%s'\n", wandev->name, dev->name);
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/* Due to new interface linking method using dev->priv,
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* this code has moved from del_if() function.*/
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kfree(dev->priv);
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dev->priv=NULL;
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unregister_netdev(dev);
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free_netdev(dev);
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