/* SPDX-License-Identifier: GPL-2.0 */
|
/*
|
* 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 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 *ieee, int force);
|
void ieee80211_crypt_deinit_handler(struct timer_list *t);
|
void ieee80211_crypt_delayed_deinit(struct ieee80211_device *ieee,
|
struct ieee80211_crypt_data **crypt);
|
|
#endif
|
