staging: rtl8192u: remove ieee80211_crypt.h

/*

 * Original code based on Host AP (software wireless LAN access point) driver

 * for Intersil Prism2/2.5/3.

 *

 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen

 * <jkmaline@cc.hut.fi>

 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>

 *

 * Adaption to a generic IEEE 802.11 stack by James Ketrenos

 * <jketreno@linux.intel.com>

 *

 * Copyright (c) 2004, Intel Corporation

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation. See README and COPYING for

 * more details.

 */

/*

 * This file defines the interface to the ieee80211 crypto module.

 */

#ifndef IEEE80211_CRYPT_H

#define IEEE80211_CRYPT_H

#include <linux/skbuff.h>

struct ieee80211_crypto_ops {

	const char *name;

	/* init new crypto context (e.g., allocate private data space,

	 * select IV, etc.); returns NULL on failure or pointer to allocated

	 * private data on success */

	void * (*init)(int keyidx);

	/* deinitialize crypto context and free allocated private data */

	void (*deinit)(void *priv);

	/* encrypt/decrypt return < 0 on error or >= 0 on success. The return

	 * value from decrypt_mpdu is passed as the keyidx value for

	 * decrypt_msdu. skb must have enough head and tail room for the

	 * encryption; if not, error will be returned; these functions are

	 * called for all MPDUs (i.e., fragments).

	 */

	int (*encrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);

	int (*decrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);

	/* These functions are called for full MSDUs, i.e. full frames.

	 * These can be NULL if full MSDU operations are not needed. */

	int (*encrypt_msdu)(struct sk_buff *skb, int hdr_len, void *priv);

	int (*decrypt_msdu)(struct sk_buff *skb, int keyidx, int hdr_len,

			    void *priv);

	int (*set_key)(void *key, int len, u8 *seq, void *priv);

	int (*get_key)(void *key, int len, u8 *seq, void *priv);

	/* procfs handler for printing out key information and possible

	 * statistics */

	char * (*print_stats)(char *p, void *priv);

	/* maximum number of bytes added by encryption; encrypt buf is

	 * allocated with extra_prefix_len bytes, copy of in_buf, and

	 * extra_postfix_len; encrypt need not use all this space, but

	 * the result must start at the beginning of the buffer and correct

	 * length must be returned */

	int extra_prefix_len, extra_postfix_len;

	struct module *owner;

};

struct ieee80211_crypt_data {

	struct list_head list; /* delayed deletion list */

	struct ieee80211_crypto_ops *ops;

	void *priv;

	atomic_t refcnt;

};

int ieee80211_register_crypto_ops(struct ieee80211_crypto_ops *ops);

int ieee80211_unregister_crypto_ops(struct ieee80211_crypto_ops *ops);

struct ieee80211_crypto_ops *ieee80211_get_crypto_ops(const char *name);

void ieee80211_crypt_deinit_entries(struct ieee80211_device *, int);

void ieee80211_crypt_deinit_handler(unsigned long);

void ieee80211_crypt_delayed_deinit(struct ieee80211_device *ieee,

				    struct ieee80211_crypt_data **crypt);

#endif