Commit | Line | Data |
---|---|---|
f0706e82 JB |
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> | |
8f37171a | 14 | #include <linux/list.h> |
f0706e82 | 15 | #include <linux/crypto.h> |
db4d1169 | 16 | #include <linux/rcupdate.h> |
f0706e82 JB |
17 | #include <net/mac80211.h> |
18 | ||
e31b8213 JB |
19 | #define NUM_DEFAULT_KEYS 4 |
20 | #define NUM_DEFAULT_MGMT_KEYS 2 | |
21 | ||
ffd7891d LR |
22 | #define WEP_IV_LEN 4 |
23 | #define WEP_ICV_LEN 4 | |
ffd7891d LR |
24 | #define ALG_CCMP_KEY_LEN 16 |
25 | #define CCMP_HDR_LEN 8 | |
26 | #define CCMP_MIC_LEN 8 | |
27 | #define CCMP_TK_LEN 16 | |
28 | #define CCMP_PN_LEN 6 | |
29 | #define TKIP_IV_LEN 8 | |
30 | #define TKIP_ICV_LEN 4 | |
31 | ||
32 | #define NUM_RX_DATA_QUEUES 17 | |
f0706e82 | 33 | |
11a843b7 JB |
34 | struct ieee80211_local; |
35 | struct ieee80211_sub_if_data; | |
36 | struct sta_info; | |
37 | ||
db4d1169 JB |
38 | /** |
39 | * enum ieee80211_internal_key_flags - internal key flags | |
40 | * | |
41 | * @KEY_FLAG_UPLOADED_TO_HARDWARE: Indicates that this key is present | |
42 | * in the hardware for TX crypto hardware acceleration. | |
db4d1169 JB |
43 | */ |
44 | enum ieee80211_internal_key_flags { | |
45 | KEY_FLAG_UPLOADED_TO_HARDWARE = BIT(0), | |
db4d1169 | 46 | }; |
11a843b7 | 47 | |
ca99861d | 48 | enum ieee80211_internal_tkip_state { |
49 | TKIP_STATE_NOT_INIT, | |
50 | TKIP_STATE_PHASE1_DONE, | |
51 | TKIP_STATE_PHASE1_HW_UPLOADED, | |
52 | }; | |
53 | ||
b0f76b33 HH |
54 | struct tkip_ctx { |
55 | u32 iv32; | |
56 | u16 iv16; | |
57 | u16 p1k[5]; | |
ca99861d | 58 | enum ieee80211_internal_tkip_state state; |
b0f76b33 HH |
59 | }; |
60 | ||
f0706e82 | 61 | struct ieee80211_key { |
11a843b7 JB |
62 | struct ieee80211_local *local; |
63 | struct ieee80211_sub_if_data *sdata; | |
64 | struct sta_info *sta; | |
65 | ||
3b96766f | 66 | /* for sdata list */ |
11a843b7 JB |
67 | struct list_head list; |
68 | ||
ad0e2b5a | 69 | /* protected by key mutex */ |
11a843b7 JB |
70 | unsigned int flags; |
71 | ||
f0706e82 JB |
72 | union { |
73 | struct { | |
74 | /* last used TSC */ | |
b0f76b33 | 75 | struct tkip_ctx tx; |
f0706e82 JB |
76 | |
77 | /* last received RSC */ | |
b0f76b33 | 78 | struct tkip_ctx rx[NUM_RX_DATA_QUEUES]; |
f0706e82 JB |
79 | } tkip; |
80 | struct { | |
81 | u8 tx_pn[6]; | |
9190252c JM |
82 | /* |
83 | * Last received packet number. The first | |
84 | * NUM_RX_DATA_QUEUES counters are used with Data | |
85 | * frames and the last counter is used with Robust | |
86 | * Management frames. | |
87 | */ | |
88 | u8 rx_pn[NUM_RX_DATA_QUEUES + 1][6]; | |
f0706e82 JB |
89 | struct crypto_cipher *tfm; |
90 | u32 replays; /* dot11RSNAStatsCCMPReplays */ | |
91 | /* scratch buffers for virt_to_page() (crypto API) */ | |
92 | #ifndef AES_BLOCK_LEN | |
93 | #define AES_BLOCK_LEN 16 | |
94 | #endif | |
95 | u8 tx_crypto_buf[6 * AES_BLOCK_LEN]; | |
96 | u8 rx_crypto_buf[6 * AES_BLOCK_LEN]; | |
97 | } ccmp; | |
765cb46a JM |
98 | struct { |
99 | u8 tx_pn[6]; | |
100 | u8 rx_pn[6]; | |
101 | struct crypto_cipher *tfm; | |
102 | u32 replays; /* dot11RSNAStatsCMACReplays */ | |
103 | u32 icverrors; /* dot11RSNAStatsCMACICVErrors */ | |
104 | /* scratch buffers for virt_to_page() (crypto API) */ | |
105 | u8 tx_crypto_buf[2 * AES_BLOCK_LEN]; | |
106 | u8 rx_crypto_buf[2 * AES_BLOCK_LEN]; | |
107 | } aes_cmac; | |
f0706e82 | 108 | } u; |
f0706e82 | 109 | |
8f20fc24 JB |
110 | /* number of times this key has been used */ |
111 | int tx_rx_count; | |
f0706e82 | 112 | |
e9f207f0 JB |
113 | #ifdef CONFIG_MAC80211_DEBUGFS |
114 | struct { | |
115 | struct dentry *stalink; | |
116 | struct dentry *dir; | |
d9c58f30 | 117 | int cnt; |
e9f207f0 JB |
118 | } debugfs; |
119 | #endif | |
120 | ||
8f20fc24 JB |
121 | /* |
122 | * key config, must be last because it contains key | |
123 | * material as variable length member | |
124 | */ | |
125 | struct ieee80211_key_conf conf; | |
f0706e82 JB |
126 | }; |
127 | ||
97359d12 | 128 | struct ieee80211_key *ieee80211_key_alloc(u32 cipher, int idx, size_t key_len, |
faa8fdc8 JM |
129 | const u8 *key_data, |
130 | size_t seq_len, const u8 *seq); | |
db4d1169 JB |
131 | /* |
132 | * Insert a key into data structures (sdata, sta if necessary) | |
133 | * to make it used, free old key. | |
134 | */ | |
3ffc2a90 JB |
135 | int __must_check ieee80211_key_link(struct ieee80211_key *key, |
136 | struct ieee80211_sub_if_data *sdata, | |
137 | struct sta_info *sta); | |
5c0c3641 | 138 | void __ieee80211_key_free(struct ieee80211_key *key); |
32162a4d JM |
139 | void ieee80211_key_free(struct ieee80211_local *local, |
140 | struct ieee80211_key *key); | |
f7e0104c JB |
141 | void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx, |
142 | bool uni, bool multi); | |
3cfcf6ac JM |
143 | void ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata, |
144 | int idx); | |
11a843b7 JB |
145 | void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata); |
146 | void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata); | |
147 | void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata); | |
148 | ||
40b275b6 JB |
149 | #define key_mtx_dereference(local, ref) \ |
150 | rcu_dereference_protected(ref, lockdep_is_held(&((local)->key_mtx))) | |
151 | ||
f0706e82 | 152 | #endif /* IEEE80211_KEY_H */ |