diff options
| -rw-r--r-- | Documentation/usb/gadget-testing.txt | 2 | ||||
| -rw-r--r-- | drivers/usb/gadget/function/f_rndis.c | 22 | ||||
| -rw-r--r-- | drivers/usb/gadget/function/rndis.c | 140 | ||||
| -rw-r--r-- | drivers/usb/gadget/function/u_rndis.h | 2 |
4 files changed, 78 insertions, 88 deletions
diff --git a/Documentation/usb/gadget-testing.txt b/Documentation/usb/gadget-testing.txt index 7769eee3b1b5..592678009c15 100644 --- a/Documentation/usb/gadget-testing.txt +++ b/Documentation/usb/gadget-testing.txt @@ -526,8 +526,6 @@ Except for ifname they can be written to until the function is linked to a configuration. The ifname is read-only and contains the name of the interface which was assigned by the net core, e. g. usb0. -By default there can be only 1 RNDIS interface in the system. - Testing the RNDIS function -------------------------- diff --git a/drivers/usb/gadget/function/f_rndis.c b/drivers/usb/gadget/function/f_rndis.c index 2dafe728ca2d..32985dade838 100644 --- a/drivers/usb/gadget/function/f_rndis.c +++ b/drivers/usb/gadget/function/f_rndis.c @@ -1012,26 +1012,6 @@ static struct usb_function *rndis_alloc(struct usb_function_instance *fi) return &rndis->port.func; } -DECLARE_USB_FUNCTION(rndis, rndis_alloc_inst, rndis_alloc); - -static int __init rndis_mod_init(void) -{ - int ret; - - ret = rndis_init(); - if (ret) - return ret; - - return usb_function_register(&rndisusb_func); -} -module_init(rndis_mod_init); - -static void __exit rndis_mod_exit(void) -{ - usb_function_unregister(&rndisusb_func); - rndis_exit(); -} -module_exit(rndis_mod_exit); - +DECLARE_USB_FUNCTION_INIT(rndis, rndis_alloc_inst, rndis_alloc); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/function/rndis.c b/drivers/usb/gadget/function/rndis.c index 01a3b5891656..dd6800017ade 100644 --- a/drivers/usb/gadget/function/rndis.c +++ b/drivers/usb/gadget/function/rndis.c @@ -25,6 +25,7 @@ #include <linux/moduleparam.h> #include <linux/kernel.h> #include <linux/errno.h> +#include <linux/idr.h> #include <linux/list.h> #include <linux/proc_fs.h> #include <linux/slab.h> @@ -57,10 +58,13 @@ MODULE_PARM_DESC (rndis_debug, "enable debugging"); #define rndis_debug 0 #endif -#define RNDIS_MAX_CONFIGS 1 +#ifdef CONFIG_USB_GADGET_DEBUG_FILES +#define NAME_TEMPLATE "driver/rndis-%03d" -static rndis_params rndis_per_dev_params[RNDIS_MAX_CONFIGS]; +#endif /* CONFIG_USB_GADGET_DEBUG_FILES */ + +static DEFINE_IDA(rndis_ida); /* Driver Version */ static const __le32 rndis_driver_version = cpu_to_le32(1); @@ -69,6 +73,11 @@ static const __le32 rndis_driver_version = cpu_to_le32(1); static rndis_resp_t *rndis_add_response(struct rndis_params *params, u32 length); +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + +static const struct file_operations rndis_proc_fops; + +#endif /* CONFIG_USB_GADGET_DEBUG_FILES */ /* supported OIDs */ static const u32 oid_supported_list[] = @@ -850,38 +859,93 @@ int rndis_msg_parser(struct rndis_params *params, u8 *buf) } EXPORT_SYMBOL_GPL(rndis_msg_parser); +static inline int rndis_get_nr(void) +{ + return ida_simple_get(&rndis_ida, 0, 0, GFP_KERNEL); +} + +static inline void rndis_put_nr(int nr) +{ + ida_simple_remove(&rndis_ida, nr); +} + struct rndis_params *rndis_register(void (*resp_avail)(void *v), void *v) { + struct rndis_params *params; u8 i; if (!resp_avail) return ERR_PTR(-EINVAL); - for (i = 0; i < RNDIS_MAX_CONFIGS; i++) { - if (!rndis_per_dev_params[i].used) { - rndis_per_dev_params[i].used = 1; - rndis_per_dev_params[i].resp_avail = resp_avail; - rndis_per_dev_params[i].v = v; - pr_debug("%s: configNr = %d\n", __func__, i); - return &rndis_per_dev_params[i]; + i = rndis_get_nr(); + if (i < 0) { + pr_debug("failed\n"); + + return ERR_PTR(-ENODEV); + } + + params = kzalloc(sizeof(*params), GFP_KERNEL); + if (!params) { + rndis_put_nr(i); + + return ERR_PTR(-ENOMEM); + } + +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + { + struct proc_dir_entry *proc_entry; + char name[20]; + + sprintf(name, NAME_TEMPLATE, i); + proc_entry = proc_create_data(name, 0660, NULL, + &rndis_proc_fops, params); + if (!proc_entry) { + kfree(params); + rndis_put_nr(i); + + return ERR_PTR(-EIO); } } - pr_debug("failed\n"); +#endif - return ERR_PTR(-ENODEV); + params->confignr = i; + params->used = 1; + params->state = RNDIS_UNINITIALIZED; + params->media_state = RNDIS_MEDIA_STATE_DISCONNECTED; + params->resp_avail = resp_avail; + params->v = v; + INIT_LIST_HEAD(&(params->resp_queue)); + pr_debug("%s: configNr = %d\n", __func__, i); + + return params; } EXPORT_SYMBOL_GPL(rndis_register); void rndis_deregister(struct rndis_params *params) { + u8 i; + pr_debug("%s:\n", __func__); if (!params) return; - params->used = 0; + + i = params->confignr; + +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + { + u8 i; + char name[20]; + + sprintf(name, NAME_TEMPLATE, i); + remove_proc_entry(name, NULL); + } +#endif + + kfree(params); + rndis_put_nr(i); } EXPORT_SYMBOL_GPL(rndis_deregister); - int rndis_set_param_dev(struct rndis_params *params, struct net_device *dev, u16 *cdc_filter) { @@ -1114,54 +1178,4 @@ static const struct file_operations rndis_proc_fops = { #define NAME_TEMPLATE "driver/rndis-%03d" -static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS]; - #endif /* CONFIG_USB_GADGET_DEBUG_FILES */ - - -int rndis_init(void) -{ - u8 i; - - for (i = 0; i < RNDIS_MAX_CONFIGS; i++) { -#ifdef CONFIG_USB_GADGET_DEBUG_FILES - char name [20]; - - sprintf(name, NAME_TEMPLATE, i); - rndis_connect_state[i] = proc_create_data(name, 0660, NULL, - &rndis_proc_fops, - (void *)(rndis_per_dev_params + i)); - if (!rndis_connect_state[i]) { - pr_debug("%s: remove entries", __func__); - while (i) { - sprintf(name, NAME_TEMPLATE, --i); - remove_proc_entry(name, NULL); - } - pr_debug("\n"); - return -EIO; - } -#endif - rndis_per_dev_params[i].confignr = i; - rndis_per_dev_params[i].used = 0; - rndis_per_dev_params[i].state = RNDIS_UNINITIALIZED; - rndis_per_dev_params[i].media_state - = RNDIS_MEDIA_STATE_DISCONNECTED; - INIT_LIST_HEAD(&(rndis_per_dev_params[i].resp_queue)); - } - - return 0; -} - -void rndis_exit(void) -{ -#ifdef CONFIG_USB_GADGET_DEBUG_FILES - u8 i; - char name[20]; - - for (i = 0; i < RNDIS_MAX_CONFIGS; i++) { - sprintf(name, NAME_TEMPLATE, i); - remove_proc_entry(name, NULL); - } -#endif -} - diff --git a/drivers/usb/gadget/function/u_rndis.h b/drivers/usb/gadget/function/u_rndis.h index e902aa42a297..4eafd5050545 100644 --- a/drivers/usb/gadget/function/u_rndis.h +++ b/drivers/usb/gadget/function/u_rndis.h @@ -39,8 +39,6 @@ struct f_rndis_opts { int refcnt; }; -int rndis_init(void); -void rndis_exit(void); void rndis_borrow_net(struct usb_function_instance *f, struct net_device *net); #endif /* U_RNDIS_H */ |
