mirror of https://gitee.com/openkylin/linux.git
Staging: hv: reorganize netvsc_drv.c
Saves space by getting rid of the forward declarations. Cc: Hank Janssen <hjanssen@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman
parent
02fafbc619
commit
df2fff28ec
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@ -39,19 +39,6 @@
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MODULE_LICENSE("GPL");
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static int netvsc_probe(struct device *device);
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static int netvsc_remove(struct device *device);
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static int netvsc_open(struct net_device *net);
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static void netvsc_xmit_completion(void *context);
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static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net);
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static int netvsc_recv_callback(struct hv_device *device_obj,
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struct hv_netvsc_packet *Packet);
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static int netvsc_close(struct net_device *net);
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static struct net_device_stats *netvsc_get_stats(struct net_device *net);
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static void netvsc_linkstatus_callback(struct hv_device *device_obj,
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unsigned int status);
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struct net_device_context {
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/* point back to our device context */
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struct device_context *device_ctx;
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@ -70,38 +57,6 @@ static int netvsc_ringbuffer_size = NETVSC_DEVICE_RING_BUFFER_SIZE;
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/* The one and only one */
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static struct netvsc_driver_context g_netvsc_drv;
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static int netvsc_drv_init(PFN_DRIVERINITIALIZE pfn_drv_init)
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{
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struct netvsc_driver *net_drv_obj = &g_netvsc_drv.drv_obj;
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struct driver_context *drv_ctx = &g_netvsc_drv.drv_ctx;
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int ret;
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DPRINT_ENTER(NETVSC_DRV);
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vmbus_get_interface(&net_drv_obj->Base.VmbusChannelInterface);
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net_drv_obj->RingBufferSize = netvsc_ringbuffer_size;
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net_drv_obj->OnReceiveCallback = netvsc_recv_callback;
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net_drv_obj->OnLinkStatusChanged = netvsc_linkstatus_callback;
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/* Callback to client driver to complete the initialization */
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pfn_drv_init(&net_drv_obj->Base);
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drv_ctx->driver.name = net_drv_obj->Base.name;
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memcpy(&drv_ctx->class_id, &net_drv_obj->Base.deviceType,
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sizeof(struct hv_guid));
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drv_ctx->probe = netvsc_probe;
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drv_ctx->remove = netvsc_remove;
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/* The driver belongs to vmbus */
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ret = vmbus_child_driver_register(drv_ctx);
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DPRINT_EXIT(NETVSC_DRV);
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return ret;
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}
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static struct net_device_stats *netvsc_get_stats(struct net_device *net)
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{
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struct net_device_context *net_device_ctx = netdev_priv(net);
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@ -113,132 +68,6 @@ static void netvsc_set_multicast_list(struct net_device *net)
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{
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}
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static const struct net_device_ops device_ops = {
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.ndo_open = netvsc_open,
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.ndo_stop = netvsc_close,
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.ndo_start_xmit = netvsc_start_xmit,
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.ndo_get_stats = netvsc_get_stats,
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.ndo_set_multicast_list = netvsc_set_multicast_list,
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};
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static int netvsc_probe(struct device *device)
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{
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struct driver_context *driver_ctx =
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driver_to_driver_context(device->driver);
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struct netvsc_driver_context *net_drv_ctx =
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(struct netvsc_driver_context *)driver_ctx;
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struct netvsc_driver *net_drv_obj = &net_drv_ctx->drv_obj;
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struct device_context *device_ctx = device_to_device_context(device);
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struct hv_device *device_obj = &device_ctx->device_obj;
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struct net_device *net = NULL;
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struct net_device_context *net_device_ctx;
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struct netvsc_device_info device_info;
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int ret;
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DPRINT_ENTER(NETVSC_DRV);
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if (!net_drv_obj->Base.OnDeviceAdd)
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return -1;
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net = alloc_netdev(sizeof(struct net_device_context), "seth%d",
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ether_setup);
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if (!net)
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return -1;
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/* Set initial state */
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netif_carrier_off(net);
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netif_stop_queue(net);
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net_device_ctx = netdev_priv(net);
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net_device_ctx->device_ctx = device_ctx;
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dev_set_drvdata(device, net);
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/* Notify the netvsc driver of the new device */
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ret = net_drv_obj->Base.OnDeviceAdd(device_obj, &device_info);
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if (ret != 0) {
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free_netdev(net);
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dev_set_drvdata(device, NULL);
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DPRINT_ERR(NETVSC_DRV, "unable to add netvsc device (ret %d)",
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ret);
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return ret;
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}
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/*
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* If carrier is still off ie we did not get a link status callback,
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* update it if necessary
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*/
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/*
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* FIXME: We should use a atomic or test/set instead to avoid getting
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* out of sync with the device's link status
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*/
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if (!netif_carrier_ok(net))
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if (!device_info.LinkState)
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netif_carrier_on(net);
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memcpy(net->dev_addr, device_info.MacAddr, ETH_ALEN);
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net->netdev_ops = &device_ops;
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SET_NETDEV_DEV(net, device);
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ret = register_netdev(net);
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if (ret != 0) {
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/* Remove the device and release the resource */
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net_drv_obj->Base.OnDeviceRemove(device_obj);
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free_netdev(net);
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}
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DPRINT_EXIT(NETVSC_DRV);
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return ret;
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}
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static int netvsc_remove(struct device *device)
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{
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struct driver_context *driver_ctx =
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driver_to_driver_context(device->driver);
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struct netvsc_driver_context *net_drv_ctx =
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(struct netvsc_driver_context *)driver_ctx;
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struct netvsc_driver *net_drv_obj = &net_drv_ctx->drv_obj;
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struct device_context *device_ctx = device_to_device_context(device);
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struct net_device *net = dev_get_drvdata(&device_ctx->device);
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struct hv_device *device_obj = &device_ctx->device_obj;
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int ret;
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DPRINT_ENTER(NETVSC_DRV);
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if (net == NULL) {
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DPRINT_INFO(NETVSC, "no net device to remove");
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DPRINT_EXIT(NETVSC_DRV);
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return 0;
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}
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if (!net_drv_obj->Base.OnDeviceRemove) {
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DPRINT_EXIT(NETVSC_DRV);
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return -1;
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}
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/* Stop outbound asap */
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netif_stop_queue(net);
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/* netif_carrier_off(net); */
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unregister_netdev(net);
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/*
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* Call to the vsc driver to let it know that the device is being
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* removed
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*/
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ret = net_drv_obj->Base.OnDeviceRemove(device_obj);
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if (ret != 0) {
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/* TODO: */
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DPRINT_ERR(NETVSC, "unable to remove vsc device (ret %d)", ret);
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}
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free_netdev(net);
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DPRINT_EXIT(NETVSC_DRV);
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return ret;
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}
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static int netvsc_open(struct net_device *net)
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{
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struct net_device_context *net_device_ctx = netdev_priv(net);
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@ -556,6 +385,132 @@ static int netvsc_recv_callback(struct hv_device *device_obj,
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return 0;
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}
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static const struct net_device_ops device_ops = {
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.ndo_open = netvsc_open,
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.ndo_stop = netvsc_close,
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.ndo_start_xmit = netvsc_start_xmit,
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.ndo_get_stats = netvsc_get_stats,
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.ndo_set_multicast_list = netvsc_set_multicast_list,
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};
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static int netvsc_probe(struct device *device)
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{
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struct driver_context *driver_ctx =
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driver_to_driver_context(device->driver);
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struct netvsc_driver_context *net_drv_ctx =
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(struct netvsc_driver_context *)driver_ctx;
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struct netvsc_driver *net_drv_obj = &net_drv_ctx->drv_obj;
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struct device_context *device_ctx = device_to_device_context(device);
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struct hv_device *device_obj = &device_ctx->device_obj;
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struct net_device *net = NULL;
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struct net_device_context *net_device_ctx;
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struct netvsc_device_info device_info;
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int ret;
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DPRINT_ENTER(NETVSC_DRV);
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if (!net_drv_obj->Base.OnDeviceAdd)
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return -1;
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net = alloc_netdev(sizeof(struct net_device_context), "seth%d",
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ether_setup);
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if (!net)
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return -1;
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/* Set initial state */
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netif_carrier_off(net);
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netif_stop_queue(net);
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net_device_ctx = netdev_priv(net);
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net_device_ctx->device_ctx = device_ctx;
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dev_set_drvdata(device, net);
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/* Notify the netvsc driver of the new device */
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ret = net_drv_obj->Base.OnDeviceAdd(device_obj, &device_info);
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if (ret != 0) {
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free_netdev(net);
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dev_set_drvdata(device, NULL);
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DPRINT_ERR(NETVSC_DRV, "unable to add netvsc device (ret %d)",
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ret);
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return ret;
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}
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/*
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* If carrier is still off ie we did not get a link status callback,
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* update it if necessary
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*/
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/*
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* FIXME: We should use a atomic or test/set instead to avoid getting
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* out of sync with the device's link status
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*/
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if (!netif_carrier_ok(net))
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if (!device_info.LinkState)
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netif_carrier_on(net);
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memcpy(net->dev_addr, device_info.MacAddr, ETH_ALEN);
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net->netdev_ops = &device_ops;
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SET_NETDEV_DEV(net, device);
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ret = register_netdev(net);
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if (ret != 0) {
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/* Remove the device and release the resource */
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net_drv_obj->Base.OnDeviceRemove(device_obj);
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free_netdev(net);
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}
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DPRINT_EXIT(NETVSC_DRV);
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return ret;
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}
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static int netvsc_remove(struct device *device)
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{
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struct driver_context *driver_ctx =
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driver_to_driver_context(device->driver);
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struct netvsc_driver_context *net_drv_ctx =
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(struct netvsc_driver_context *)driver_ctx;
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struct netvsc_driver *net_drv_obj = &net_drv_ctx->drv_obj;
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struct device_context *device_ctx = device_to_device_context(device);
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struct net_device *net = dev_get_drvdata(&device_ctx->device);
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struct hv_device *device_obj = &device_ctx->device_obj;
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int ret;
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DPRINT_ENTER(NETVSC_DRV);
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if (net == NULL) {
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DPRINT_INFO(NETVSC, "no net device to remove");
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DPRINT_EXIT(NETVSC_DRV);
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return 0;
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}
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if (!net_drv_obj->Base.OnDeviceRemove) {
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DPRINT_EXIT(NETVSC_DRV);
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return -1;
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}
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/* Stop outbound asap */
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netif_stop_queue(net);
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/* netif_carrier_off(net); */
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unregister_netdev(net);
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/*
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* Call to the vsc driver to let it know that the device is being
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* removed
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*/
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ret = net_drv_obj->Base.OnDeviceRemove(device_obj);
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if (ret != 0) {
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/* TODO: */
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DPRINT_ERR(NETVSC, "unable to remove vsc device (ret %d)", ret);
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}
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free_netdev(net);
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DPRINT_EXIT(NETVSC_DRV);
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return ret;
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}
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static int netvsc_drv_exit_cb(struct device *dev, void *data)
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{
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struct device **curr = (struct device **)data;
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@ -604,6 +559,38 @@ static void netvsc_drv_exit(void)
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return;
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}
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static int netvsc_drv_init(PFN_DRIVERINITIALIZE pfn_drv_init)
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{
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struct netvsc_driver *net_drv_obj = &g_netvsc_drv.drv_obj;
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struct driver_context *drv_ctx = &g_netvsc_drv.drv_ctx;
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int ret;
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DPRINT_ENTER(NETVSC_DRV);
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vmbus_get_interface(&net_drv_obj->Base.VmbusChannelInterface);
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net_drv_obj->RingBufferSize = netvsc_ringbuffer_size;
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net_drv_obj->OnReceiveCallback = netvsc_recv_callback;
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net_drv_obj->OnLinkStatusChanged = netvsc_linkstatus_callback;
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/* Callback to client driver to complete the initialization */
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pfn_drv_init(&net_drv_obj->Base);
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drv_ctx->driver.name = net_drv_obj->Base.name;
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memcpy(&drv_ctx->class_id, &net_drv_obj->Base.deviceType,
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sizeof(struct hv_guid));
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drv_ctx->probe = netvsc_probe;
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drv_ctx->remove = netvsc_remove;
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/* The driver belongs to vmbus */
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ret = vmbus_child_driver_register(drv_ctx);
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DPRINT_EXIT(NETVSC_DRV);
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return ret;
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}
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static int __init netvsc_init(void)
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{
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int ret;
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