mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 10:01:43 +00:00
ffd7891dc9
Some drivers may want to to use the TKIP key offsets for TX and RX MIC so lets move this out. Lets also clear up a bit how this is used internally in mac80211. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
150 lines
3.8 KiB
C
150 lines
3.8 KiB
C
/*
|
|
* Copyright 2002-2004, Instant802 Networks, Inc.
|
|
* Copyright 2005, Devicescape Software, Inc.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef IEEE80211_KEY_H
|
|
#define IEEE80211_KEY_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/list.h>
|
|
#include <linux/crypto.h>
|
|
#include <linux/rcupdate.h>
|
|
#include <net/mac80211.h>
|
|
|
|
#define WEP_IV_LEN 4
|
|
#define WEP_ICV_LEN 4
|
|
#define ALG_TKIP_KEY_LEN 32
|
|
#define ALG_CCMP_KEY_LEN 16
|
|
#define CCMP_HDR_LEN 8
|
|
#define CCMP_MIC_LEN 8
|
|
#define CCMP_TK_LEN 16
|
|
#define CCMP_PN_LEN 6
|
|
#define TKIP_IV_LEN 8
|
|
#define TKIP_ICV_LEN 4
|
|
|
|
#define NUM_RX_DATA_QUEUES 17
|
|
|
|
struct ieee80211_local;
|
|
struct ieee80211_sub_if_data;
|
|
struct sta_info;
|
|
|
|
/**
|
|
* enum ieee80211_internal_key_flags - internal key flags
|
|
*
|
|
* @KEY_FLAG_UPLOADED_TO_HARDWARE: Indicates that this key is present
|
|
* in the hardware for TX crypto hardware acceleration.
|
|
* @KEY_FLAG_TODO_DELETE: Key is marked for deletion and will, after an
|
|
* RCU grace period, no longer be reachable other than from the
|
|
* todo list.
|
|
* @KEY_FLAG_TODO_HWACCEL_ADD: Key needs to be added to hardware acceleration.
|
|
* @KEY_FLAG_TODO_HWACCEL_REMOVE: Key needs to be removed from hardware
|
|
* acceleration.
|
|
* @KEY_FLAG_TODO_DEFKEY: Key is default key and debugfs needs to be updated.
|
|
* @KEY_FLAG_TODO_ADD_DEBUGFS: Key needs to be added to debugfs.
|
|
*/
|
|
enum ieee80211_internal_key_flags {
|
|
KEY_FLAG_UPLOADED_TO_HARDWARE = BIT(0),
|
|
KEY_FLAG_TODO_DELETE = BIT(1),
|
|
KEY_FLAG_TODO_HWACCEL_ADD = BIT(2),
|
|
KEY_FLAG_TODO_HWACCEL_REMOVE = BIT(3),
|
|
KEY_FLAG_TODO_DEFKEY = BIT(4),
|
|
KEY_FLAG_TODO_ADD_DEBUGFS = BIT(5),
|
|
};
|
|
|
|
struct tkip_ctx {
|
|
u32 iv32;
|
|
u16 iv16;
|
|
u16 p1k[5];
|
|
int initialized;
|
|
};
|
|
|
|
struct ieee80211_key {
|
|
struct ieee80211_local *local;
|
|
struct ieee80211_sub_if_data *sdata;
|
|
struct sta_info *sta;
|
|
|
|
/* for sdata list */
|
|
struct list_head list;
|
|
/* for todo list */
|
|
struct list_head todo;
|
|
|
|
/* protected by todo lock! */
|
|
unsigned int flags;
|
|
|
|
union {
|
|
struct {
|
|
/* last used TSC */
|
|
struct tkip_ctx tx;
|
|
|
|
/* last received RSC */
|
|
struct tkip_ctx rx[NUM_RX_DATA_QUEUES];
|
|
} tkip;
|
|
struct {
|
|
u8 tx_pn[6];
|
|
u8 rx_pn[NUM_RX_DATA_QUEUES][6];
|
|
struct crypto_cipher *tfm;
|
|
u32 replays; /* dot11RSNAStatsCCMPReplays */
|
|
/* scratch buffers for virt_to_page() (crypto API) */
|
|
#ifndef AES_BLOCK_LEN
|
|
#define AES_BLOCK_LEN 16
|
|
#endif
|
|
u8 tx_crypto_buf[6 * AES_BLOCK_LEN];
|
|
u8 rx_crypto_buf[6 * AES_BLOCK_LEN];
|
|
} ccmp;
|
|
} u;
|
|
|
|
/* number of times this key has been used */
|
|
int tx_rx_count;
|
|
|
|
#ifdef CONFIG_MAC80211_DEBUGFS
|
|
struct {
|
|
struct dentry *stalink;
|
|
struct dentry *dir;
|
|
struct dentry *keylen;
|
|
struct dentry *flags;
|
|
struct dentry *keyidx;
|
|
struct dentry *hw_key_idx;
|
|
struct dentry *tx_rx_count;
|
|
struct dentry *algorithm;
|
|
struct dentry *tx_spec;
|
|
struct dentry *rx_spec;
|
|
struct dentry *replays;
|
|
struct dentry *key;
|
|
struct dentry *ifindex;
|
|
int cnt;
|
|
} debugfs;
|
|
#endif
|
|
|
|
/*
|
|
* key config, must be last because it contains key
|
|
* material as variable length member
|
|
*/
|
|
struct ieee80211_key_conf conf;
|
|
};
|
|
|
|
struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg,
|
|
int idx,
|
|
size_t key_len,
|
|
const u8 *key_data);
|
|
/*
|
|
* Insert a key into data structures (sdata, sta if necessary)
|
|
* to make it used, free old key.
|
|
*/
|
|
void ieee80211_key_link(struct ieee80211_key *key,
|
|
struct ieee80211_sub_if_data *sdata,
|
|
struct sta_info *sta);
|
|
void ieee80211_key_free(struct ieee80211_key *key);
|
|
void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx);
|
|
void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata);
|
|
void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata);
|
|
void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata);
|
|
|
|
void ieee80211_key_todo(void);
|
|
|
|
#endif /* IEEE80211_KEY_H */
|