swh:1:snp:173f8deb0c56c557784b4fd217e7608ac6197844
Tip revision: 5f0a6e2d503896062f641639dacfe5055c2f593b authored by Linus Torvalds on 24 December 2011, 05:51:06 UTC
Linux 3.2-rc7
Linux 3.2-rc7
Tip revision: 5f0a6e2
rtllib_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 rtllib crypto module.
*/
#ifndef RTLLIB_CRYPT_H
#define RTLLIB_CRYPT_H
#include <linux/skbuff.h>
struct rtllib_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, struct rtllib_device* ieee);
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 struct buffer and
* correct length must be returned */
int extra_prefix_len, extra_postfix_len;
struct module *owner;
};
struct rtllib_crypt_data {
struct list_head list; /* delayed deletion list */
struct rtllib_crypto_ops *ops;
void *priv;
atomic_t refcnt;
};
int rtllib_register_crypto_ops(struct rtllib_crypto_ops *ops);
int rtllib_unregister_crypto_ops(struct rtllib_crypto_ops *ops);
struct rtllib_crypto_ops *rtllib_get_crypto_ops(const char *name);
void rtllib_crypt_deinit_entries(struct rtllib_device *, int);
void rtllib_crypt_deinit_handler(unsigned long);
void rtllib_crypt_delayed_deinit(struct rtllib_device *ieee,
struct rtllib_crypt_data **crypt);
#endif