cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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lib80211.h (4017B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * lib80211.h -- common bits for IEEE802.11 wireless drivers
      4 *
      5 * Copyright (c) 2008, John W. Linville <linville@tuxdriver.com>
      6 *
      7 * Some bits copied from old ieee80211 component, w/ original copyright
      8 * notices below:
      9 *
     10 * Original code based on Host AP (software wireless LAN access point) driver
     11 * for Intersil Prism2/2.5/3.
     12 *
     13 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
     14 * <j@w1.fi>
     15 * Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
     16 *
     17 * Adaption to a generic IEEE 802.11 stack by James Ketrenos
     18 * <jketreno@linux.intel.com>
     19 *
     20 * Copyright (c) 2004, Intel Corporation
     21 *
     22 */
     23
     24#ifndef LIB80211_H
     25#define LIB80211_H
     26
     27#include <linux/types.h>
     28#include <linux/list.h>
     29#include <linux/atomic.h>
     30#include <linux/if.h>
     31#include <linux/skbuff.h>
     32#include <linux/ieee80211.h>
     33#include <linux/timer.h>
     34#include <linux/seq_file.h>
     35
     36#define NUM_WEP_KEYS	4
     37
     38enum {
     39	IEEE80211_CRYPTO_TKIP_COUNTERMEASURES = (1 << 0),
     40};
     41
     42struct module;
     43
     44struct lib80211_crypto_ops {
     45	const char *name;
     46	struct list_head list;
     47
     48	/* init new crypto context (e.g., allocate private data space,
     49	 * select IV, etc.); returns NULL on failure or pointer to allocated
     50	 * private data on success */
     51	void *(*init) (int keyidx);
     52
     53	/* deinitialize crypto context and free allocated private data */
     54	void (*deinit) (void *priv);
     55
     56	/* encrypt/decrypt return < 0 on error or >= 0 on success. The return
     57	 * value from decrypt_mpdu is passed as the keyidx value for
     58	 * decrypt_msdu. skb must have enough head and tail room for the
     59	 * encryption; if not, error will be returned; these functions are
     60	 * called for all MPDUs (i.e., fragments).
     61	 */
     62	int (*encrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
     63	int (*decrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
     64
     65	/* These functions are called for full MSDUs, i.e. full frames.
     66	 * These can be NULL if full MSDU operations are not needed. */
     67	int (*encrypt_msdu) (struct sk_buff * skb, int hdr_len, void *priv);
     68	int (*decrypt_msdu) (struct sk_buff * skb, int keyidx, int hdr_len,
     69			     void *priv);
     70
     71	int (*set_key) (void *key, int len, u8 * seq, void *priv);
     72	int (*get_key) (void *key, int len, u8 * seq, void *priv);
     73
     74	/* procfs handler for printing out key information and possible
     75	 * statistics */
     76	void (*print_stats) (struct seq_file *m, void *priv);
     77
     78	/* Crypto specific flag get/set for configuration settings */
     79	unsigned long (*get_flags) (void *priv);
     80	unsigned long (*set_flags) (unsigned long flags, void *priv);
     81
     82	/* maximum number of bytes added by encryption; encrypt buf is
     83	 * allocated with extra_prefix_len bytes, copy of in_buf, and
     84	 * extra_postfix_len; encrypt need not use all this space, but
     85	 * the result must start at the beginning of the buffer and correct
     86	 * length must be returned */
     87	int extra_mpdu_prefix_len, extra_mpdu_postfix_len;
     88	int extra_msdu_prefix_len, extra_msdu_postfix_len;
     89
     90	struct module *owner;
     91};
     92
     93struct lib80211_crypt_data {
     94	struct list_head list;	/* delayed deletion list */
     95	struct lib80211_crypto_ops *ops;
     96	void *priv;
     97	atomic_t refcnt;
     98};
     99
    100struct lib80211_crypt_info {
    101	char *name;
    102	/* Most clients will already have a lock,
    103	   so just point to that. */
    104	spinlock_t *lock;
    105
    106	struct lib80211_crypt_data *crypt[NUM_WEP_KEYS];
    107	int tx_keyidx;		/* default TX key index (crypt[tx_keyidx]) */
    108	struct list_head crypt_deinit_list;
    109	struct timer_list crypt_deinit_timer;
    110	int crypt_quiesced;
    111};
    112
    113int lib80211_crypt_info_init(struct lib80211_crypt_info *info, char *name,
    114                                spinlock_t *lock);
    115void lib80211_crypt_info_free(struct lib80211_crypt_info *info);
    116int lib80211_register_crypto_ops(struct lib80211_crypto_ops *ops);
    117int lib80211_unregister_crypto_ops(struct lib80211_crypto_ops *ops);
    118struct lib80211_crypto_ops *lib80211_get_crypto_ops(const char *name);
    119void lib80211_crypt_delayed_deinit(struct lib80211_crypt_info *info,
    120				    struct lib80211_crypt_data **crypt);
    121
    122#endif /* LIB80211_H */