Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2002-2004, Instant802 Networks, Inc. |
| 3 | * Copyright 2005, Devicescape Software, Inc. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License version 2 as |
| 7 | * published by the Free Software Foundation. |
| 8 | */ |
| 9 | |
| 10 | #ifndef IEEE80211_KEY_H |
| 11 | #define IEEE80211_KEY_H |
| 12 | |
| 13 | #include <linux/types.h> |
Johannes Berg | 8f37171 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 14 | #include <linux/list.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 15 | #include <linux/crypto.h> |
| 16 | #include <net/mac80211.h> |
| 17 | |
| 18 | /* ALG_TKIP |
| 19 | * struct ieee80211_key::key is encoded as a 256-bit (32 byte) data block: |
| 20 | * Temporal Encryption Key (128 bits) |
| 21 | * Temporal Authenticator Tx MIC Key (64 bits) |
| 22 | * Temporal Authenticator Rx MIC Key (64 bits) |
| 23 | */ |
| 24 | |
| 25 | #define WEP_IV_LEN 4 |
| 26 | #define WEP_ICV_LEN 4 |
| 27 | |
| 28 | #define ALG_TKIP_KEY_LEN 32 |
| 29 | /* Starting offsets for each key */ |
| 30 | #define ALG_TKIP_TEMP_ENCR_KEY 0 |
| 31 | #define ALG_TKIP_TEMP_AUTH_TX_MIC_KEY 16 |
| 32 | #define ALG_TKIP_TEMP_AUTH_RX_MIC_KEY 24 |
| 33 | #define TKIP_IV_LEN 8 |
| 34 | #define TKIP_ICV_LEN 4 |
| 35 | |
| 36 | #define ALG_CCMP_KEY_LEN 16 |
| 37 | #define CCMP_HDR_LEN 8 |
| 38 | #define CCMP_MIC_LEN 8 |
| 39 | #define CCMP_TK_LEN 16 |
| 40 | #define CCMP_PN_LEN 6 |
| 41 | |
| 42 | #define NUM_RX_DATA_QUEUES 17 |
| 43 | |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 44 | struct ieee80211_local; |
| 45 | struct ieee80211_sub_if_data; |
| 46 | struct sta_info; |
| 47 | |
| 48 | #define KEY_FLAG_UPLOADED_TO_HARDWARE (1<<0) |
| 49 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 50 | struct ieee80211_key { |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 51 | struct ieee80211_local *local; |
| 52 | struct ieee80211_sub_if_data *sdata; |
| 53 | struct sta_info *sta; |
| 54 | |
| 55 | struct list_head list; |
| 56 | |
| 57 | unsigned int flags; |
| 58 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 59 | union { |
| 60 | struct { |
| 61 | /* last used TSC */ |
| 62 | u32 iv32; |
| 63 | u16 iv16; |
| 64 | u16 p1k[5]; |
| 65 | int tx_initialized; |
| 66 | |
| 67 | /* last received RSC */ |
| 68 | u32 iv32_rx[NUM_RX_DATA_QUEUES]; |
| 69 | u16 iv16_rx[NUM_RX_DATA_QUEUES]; |
| 70 | u16 p1k_rx[NUM_RX_DATA_QUEUES][5]; |
| 71 | int rx_initialized[NUM_RX_DATA_QUEUES]; |
| 72 | } tkip; |
| 73 | struct { |
| 74 | u8 tx_pn[6]; |
| 75 | u8 rx_pn[NUM_RX_DATA_QUEUES][6]; |
| 76 | struct crypto_cipher *tfm; |
| 77 | u32 replays; /* dot11RSNAStatsCCMPReplays */ |
| 78 | /* scratch buffers for virt_to_page() (crypto API) */ |
| 79 | #ifndef AES_BLOCK_LEN |
| 80 | #define AES_BLOCK_LEN 16 |
| 81 | #endif |
| 82 | u8 tx_crypto_buf[6 * AES_BLOCK_LEN]; |
| 83 | u8 rx_crypto_buf[6 * AES_BLOCK_LEN]; |
| 84 | } ccmp; |
| 85 | } u; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 86 | |
Johannes Berg | 8f20fc2 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 87 | /* number of times this key has been used */ |
| 88 | int tx_rx_count; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 89 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 90 | #ifdef CONFIG_MAC80211_DEBUGFS |
| 91 | struct { |
| 92 | struct dentry *stalink; |
| 93 | struct dentry *dir; |
| 94 | struct dentry *keylen; |
Johannes Berg | 8f20fc2 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 95 | struct dentry *flags; |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 96 | struct dentry *keyidx; |
| 97 | struct dentry *hw_key_idx; |
| 98 | struct dentry *tx_rx_count; |
| 99 | struct dentry *algorithm; |
| 100 | struct dentry *tx_spec; |
| 101 | struct dentry *rx_spec; |
| 102 | struct dentry *replays; |
| 103 | struct dentry *key; |
Johannes Berg | e7a64f1 | 2007-08-28 17:01:55 -0400 | [diff] [blame^] | 104 | struct dentry *ifindex; |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 105 | } debugfs; |
| 106 | #endif |
| 107 | |
Johannes Berg | 8f20fc2 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 108 | /* |
| 109 | * key config, must be last because it contains key |
| 110 | * material as variable length member |
| 111 | */ |
| 112 | struct ieee80211_key_conf conf; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 113 | }; |
| 114 | |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 115 | struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata, |
| 116 | struct sta_info *sta, |
| 117 | ieee80211_key_alg alg, |
| 118 | int idx, |
| 119 | size_t key_len, |
| 120 | const u8 *key_data); |
| 121 | void ieee80211_key_free(struct ieee80211_key *key); |
| 122 | void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx); |
| 123 | void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata); |
| 124 | void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata); |
| 125 | void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata); |
| 126 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 127 | #endif /* IEEE80211_KEY_H */ |