From: Greg Kroah-Hartman Date: Tue, 1 Sep 2009 04:11:12 +0000 (-0700) Subject: Staging: hv: reorganize netvsc_drv.c X-Git-Tag: v2.6.32-rc1~668^2~310 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=df2fff28ec9e120d458e56e210557c6a1416e819;p=platform%2Fkernel%2Flinux-stable.git Staging: hv: reorganize netvsc_drv.c Saves space by getting rid of the forward declarations. Cc: Hank Janssen Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/hv/netvsc_drv.c b/drivers/staging/hv/netvsc_drv.c index 46056c6..70f66cb 100644 --- a/drivers/staging/hv/netvsc_drv.c +++ b/drivers/staging/hv/netvsc_drv.c @@ -39,19 +39,6 @@ MODULE_LICENSE("GPL"); -static int netvsc_probe(struct device *device); -static int netvsc_remove(struct device *device); -static int netvsc_open(struct net_device *net); -static void netvsc_xmit_completion(void *context); -static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net); -static int netvsc_recv_callback(struct hv_device *device_obj, - struct hv_netvsc_packet *Packet); -static int netvsc_close(struct net_device *net); -static struct net_device_stats *netvsc_get_stats(struct net_device *net); -static void netvsc_linkstatus_callback(struct hv_device *device_obj, - unsigned int status); - - struct net_device_context { /* point back to our device context */ struct device_context *device_ctx; @@ -70,38 +57,6 @@ static int netvsc_ringbuffer_size = NETVSC_DEVICE_RING_BUFFER_SIZE; /* The one and only one */ static struct netvsc_driver_context g_netvsc_drv; -static int netvsc_drv_init(PFN_DRIVERINITIALIZE pfn_drv_init) -{ - struct netvsc_driver *net_drv_obj = &g_netvsc_drv.drv_obj; - struct driver_context *drv_ctx = &g_netvsc_drv.drv_ctx; - int ret; - - DPRINT_ENTER(NETVSC_DRV); - - vmbus_get_interface(&net_drv_obj->Base.VmbusChannelInterface); - - net_drv_obj->RingBufferSize = netvsc_ringbuffer_size; - net_drv_obj->OnReceiveCallback = netvsc_recv_callback; - net_drv_obj->OnLinkStatusChanged = netvsc_linkstatus_callback; - - /* Callback to client driver to complete the initialization */ - pfn_drv_init(&net_drv_obj->Base); - - drv_ctx->driver.name = net_drv_obj->Base.name; - memcpy(&drv_ctx->class_id, &net_drv_obj->Base.deviceType, - sizeof(struct hv_guid)); - - drv_ctx->probe = netvsc_probe; - drv_ctx->remove = netvsc_remove; - - /* The driver belongs to vmbus */ - ret = vmbus_child_driver_register(drv_ctx); - - DPRINT_EXIT(NETVSC_DRV); - - return ret; -} - static struct net_device_stats *netvsc_get_stats(struct net_device *net) { struct net_device_context *net_device_ctx = netdev_priv(net); @@ -113,132 +68,6 @@ static void netvsc_set_multicast_list(struct net_device *net) { } -static const struct net_device_ops device_ops = { - .ndo_open = netvsc_open, - .ndo_stop = netvsc_close, - .ndo_start_xmit = netvsc_start_xmit, - .ndo_get_stats = netvsc_get_stats, - .ndo_set_multicast_list = netvsc_set_multicast_list, -}; - -static int netvsc_probe(struct device *device) -{ - struct driver_context *driver_ctx = - driver_to_driver_context(device->driver); - struct netvsc_driver_context *net_drv_ctx = - (struct netvsc_driver_context *)driver_ctx; - struct netvsc_driver *net_drv_obj = &net_drv_ctx->drv_obj; - struct device_context *device_ctx = device_to_device_context(device); - struct hv_device *device_obj = &device_ctx->device_obj; - struct net_device *net = NULL; - struct net_device_context *net_device_ctx; - struct netvsc_device_info device_info; - int ret; - - DPRINT_ENTER(NETVSC_DRV); - - if (!net_drv_obj->Base.OnDeviceAdd) - return -1; - - net = alloc_netdev(sizeof(struct net_device_context), "seth%d", - ether_setup); - if (!net) - return -1; - - /* Set initial state */ - netif_carrier_off(net); - netif_stop_queue(net); - - net_device_ctx = netdev_priv(net); - net_device_ctx->device_ctx = device_ctx; - dev_set_drvdata(device, net); - - /* Notify the netvsc driver of the new device */ - ret = net_drv_obj->Base.OnDeviceAdd(device_obj, &device_info); - if (ret != 0) { - free_netdev(net); - dev_set_drvdata(device, NULL); - - DPRINT_ERR(NETVSC_DRV, "unable to add netvsc device (ret %d)", - ret); - return ret; - } - - /* - * If carrier is still off ie we did not get a link status callback, - * update it if necessary - */ - /* - * FIXME: We should use a atomic or test/set instead to avoid getting - * out of sync with the device's link status - */ - if (!netif_carrier_ok(net)) - if (!device_info.LinkState) - netif_carrier_on(net); - - memcpy(net->dev_addr, device_info.MacAddr, ETH_ALEN); - - net->netdev_ops = &device_ops; - - SET_NETDEV_DEV(net, device); - - ret = register_netdev(net); - if (ret != 0) { - /* Remove the device and release the resource */ - net_drv_obj->Base.OnDeviceRemove(device_obj); - free_netdev(net); - } - - DPRINT_EXIT(NETVSC_DRV); - return ret; -} - -static int netvsc_remove(struct device *device) -{ - struct driver_context *driver_ctx = - driver_to_driver_context(device->driver); - struct netvsc_driver_context *net_drv_ctx = - (struct netvsc_driver_context *)driver_ctx; - struct netvsc_driver *net_drv_obj = &net_drv_ctx->drv_obj; - struct device_context *device_ctx = device_to_device_context(device); - struct net_device *net = dev_get_drvdata(&device_ctx->device); - struct hv_device *device_obj = &device_ctx->device_obj; - int ret; - - DPRINT_ENTER(NETVSC_DRV); - - if (net == NULL) { - DPRINT_INFO(NETVSC, "no net device to remove"); - DPRINT_EXIT(NETVSC_DRV); - return 0; - } - - if (!net_drv_obj->Base.OnDeviceRemove) { - DPRINT_EXIT(NETVSC_DRV); - return -1; - } - - /* Stop outbound asap */ - netif_stop_queue(net); - /* netif_carrier_off(net); */ - - unregister_netdev(net); - - /* - * Call to the vsc driver to let it know that the device is being - * removed - */ - ret = net_drv_obj->Base.OnDeviceRemove(device_obj); - if (ret != 0) { - /* TODO: */ - DPRINT_ERR(NETVSC, "unable to remove vsc device (ret %d)", ret); - } - - free_netdev(net); - DPRINT_EXIT(NETVSC_DRV); - return ret; -} - static int netvsc_open(struct net_device *net) { struct net_device_context *net_device_ctx = netdev_priv(net); @@ -556,6 +385,132 @@ static int netvsc_recv_callback(struct hv_device *device_obj, return 0; } +static const struct net_device_ops device_ops = { + .ndo_open = netvsc_open, + .ndo_stop = netvsc_close, + .ndo_start_xmit = netvsc_start_xmit, + .ndo_get_stats = netvsc_get_stats, + .ndo_set_multicast_list = netvsc_set_multicast_list, +}; + +static int netvsc_probe(struct device *device) +{ + struct driver_context *driver_ctx = + driver_to_driver_context(device->driver); + struct netvsc_driver_context *net_drv_ctx = + (struct netvsc_driver_context *)driver_ctx; + struct netvsc_driver *net_drv_obj = &net_drv_ctx->drv_obj; + struct device_context *device_ctx = device_to_device_context(device); + struct hv_device *device_obj = &device_ctx->device_obj; + struct net_device *net = NULL; + struct net_device_context *net_device_ctx; + struct netvsc_device_info device_info; + int ret; + + DPRINT_ENTER(NETVSC_DRV); + + if (!net_drv_obj->Base.OnDeviceAdd) + return -1; + + net = alloc_netdev(sizeof(struct net_device_context), "seth%d", + ether_setup); + if (!net) + return -1; + + /* Set initial state */ + netif_carrier_off(net); + netif_stop_queue(net); + + net_device_ctx = netdev_priv(net); + net_device_ctx->device_ctx = device_ctx; + dev_set_drvdata(device, net); + + /* Notify the netvsc driver of the new device */ + ret = net_drv_obj->Base.OnDeviceAdd(device_obj, &device_info); + if (ret != 0) { + free_netdev(net); + dev_set_drvdata(device, NULL); + + DPRINT_ERR(NETVSC_DRV, "unable to add netvsc device (ret %d)", + ret); + return ret; + } + + /* + * If carrier is still off ie we did not get a link status callback, + * update it if necessary + */ + /* + * FIXME: We should use a atomic or test/set instead to avoid getting + * out of sync with the device's link status + */ + if (!netif_carrier_ok(net)) + if (!device_info.LinkState) + netif_carrier_on(net); + + memcpy(net->dev_addr, device_info.MacAddr, ETH_ALEN); + + net->netdev_ops = &device_ops; + + SET_NETDEV_DEV(net, device); + + ret = register_netdev(net); + if (ret != 0) { + /* Remove the device and release the resource */ + net_drv_obj->Base.OnDeviceRemove(device_obj); + free_netdev(net); + } + + DPRINT_EXIT(NETVSC_DRV); + return ret; +} + +static int netvsc_remove(struct device *device) +{ + struct driver_context *driver_ctx = + driver_to_driver_context(device->driver); + struct netvsc_driver_context *net_drv_ctx = + (struct netvsc_driver_context *)driver_ctx; + struct netvsc_driver *net_drv_obj = &net_drv_ctx->drv_obj; + struct device_context *device_ctx = device_to_device_context(device); + struct net_device *net = dev_get_drvdata(&device_ctx->device); + struct hv_device *device_obj = &device_ctx->device_obj; + int ret; + + DPRINT_ENTER(NETVSC_DRV); + + if (net == NULL) { + DPRINT_INFO(NETVSC, "no net device to remove"); + DPRINT_EXIT(NETVSC_DRV); + return 0; + } + + if (!net_drv_obj->Base.OnDeviceRemove) { + DPRINT_EXIT(NETVSC_DRV); + return -1; + } + + /* Stop outbound asap */ + netif_stop_queue(net); + /* netif_carrier_off(net); */ + + unregister_netdev(net); + + /* + * Call to the vsc driver to let it know that the device is being + * removed + */ + ret = net_drv_obj->Base.OnDeviceRemove(device_obj); + if (ret != 0) { + /* TODO: */ + DPRINT_ERR(NETVSC, "unable to remove vsc device (ret %d)", ret); + } + + free_netdev(net); + DPRINT_EXIT(NETVSC_DRV); + return ret; +} + static int netvsc_drv_exit_cb(struct device *dev, void *data) { struct device **curr = (struct device **)data; @@ -604,6 +559,38 @@ static void netvsc_drv_exit(void) return; } +static int netvsc_drv_init(PFN_DRIVERINITIALIZE pfn_drv_init) +{ + struct netvsc_driver *net_drv_obj = &g_netvsc_drv.drv_obj; + struct driver_context *drv_ctx = &g_netvsc_drv.drv_ctx; + int ret; + + DPRINT_ENTER(NETVSC_DRV); + + vmbus_get_interface(&net_drv_obj->Base.VmbusChannelInterface); + + net_drv_obj->RingBufferSize = netvsc_ringbuffer_size; + net_drv_obj->OnReceiveCallback = netvsc_recv_callback; + net_drv_obj->OnLinkStatusChanged = netvsc_linkstatus_callback; + + /* Callback to client driver to complete the initialization */ + pfn_drv_init(&net_drv_obj->Base); + + drv_ctx->driver.name = net_drv_obj->Base.name; + memcpy(&drv_ctx->class_id, &net_drv_obj->Base.deviceType, + sizeof(struct hv_guid)); + + drv_ctx->probe = netvsc_probe; + drv_ctx->remove = netvsc_remove; + + /* The driver belongs to vmbus */ + ret = vmbus_child_driver_register(drv_ctx); + + DPRINT_EXIT(NETVSC_DRV); + + return ret; +} + static int __init netvsc_init(void) { int ret;