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RNDIS function has a limitation on the number of allowed instances. So far it has been RNDIS_MAX_CONFIGS, which happens to be one. In order to eliminate this kind of arbitrary limitation we should not preallocate a predefined (RNDIS_MAX_CONFIGS) array of struct rndis_params instances but instead allow allocating them on demand. This patch allocates struct rndis_params on demand in rndis_register(). Coversly, the structure is free()'d in rndis_deregister(). If CONFIG_USB_GADGET_DEBUG_FILES is set, the proc files are created which is the same behaviour as before, but the moment of creation is delayed until struct rndis_params is actually allocated. rnids_init() and rndis_exit() have nothing to do, so they are eliminated. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
45 lines
1 KiB
C
45 lines
1 KiB
C
/*
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* u_rndis.h
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*
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* Utility definitions for the subset function
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*
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* Copyright (c) 2013 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*
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* Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef U_RNDIS_H
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#define U_RNDIS_H
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#include <linux/usb/composite.h>
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struct f_rndis_opts {
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struct usb_function_instance func_inst;
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u32 vendor_id;
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const char *manufacturer;
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struct net_device *net;
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bool bound;
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bool borrowed_net;
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struct usb_os_desc rndis_os_desc;
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char rndis_ext_compat_id[16];
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/*
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* Read/write access to configfs attributes is handled by configfs.
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*
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* This is to protect the data from concurrent access by read/write
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* and create symlink/remove symlink.
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*/
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struct mutex lock;
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int refcnt;
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};
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void rndis_borrow_net(struct usb_function_instance *f, struct net_device *net);
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#endif /* U_RNDIS_H */
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