Commit | Line | Data |
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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 | ||
ffd7891d LR |
19 | #define WEP_IV_LEN 4 |
20 | #define WEP_ICV_LEN 4 | |
21 | #define ALG_TKIP_KEY_LEN 32 | |
22 | #define ALG_CCMP_KEY_LEN 16 | |
23 | #define CCMP_HDR_LEN 8 | |
24 | #define CCMP_MIC_LEN 8 | |
25 | #define CCMP_TK_LEN 16 | |
26 | #define CCMP_PN_LEN 6 | |
27 | #define TKIP_IV_LEN 8 | |
28 | #define TKIP_ICV_LEN 4 | |
29 | ||
30 | #define NUM_RX_DATA_QUEUES 17 | |
f0706e82 | 31 | |
11a843b7 JB |
32 | struct ieee80211_local; |
33 | struct ieee80211_sub_if_data; | |
34 | struct sta_info; | |
35 | ||
db4d1169 JB |
36 | /** |
37 | * enum ieee80211_internal_key_flags - internal key flags | |
38 | * | |
39 | * @KEY_FLAG_UPLOADED_TO_HARDWARE: Indicates that this key is present | |
40 | * in the hardware for TX crypto hardware acceleration. | |
db4d1169 JB |
41 | */ |
42 | enum ieee80211_internal_key_flags { | |
43 | KEY_FLAG_UPLOADED_TO_HARDWARE = BIT(0), | |
db4d1169 | 44 | }; |
11a843b7 | 45 | |
ca99861d | 46 | enum ieee80211_internal_tkip_state { |
47 | TKIP_STATE_NOT_INIT, | |
48 | TKIP_STATE_PHASE1_DONE, | |
49 | TKIP_STATE_PHASE1_HW_UPLOADED, | |
50 | }; | |
51 | ||
b0f76b33 HH |
52 | struct tkip_ctx { |
53 | u32 iv32; | |
54 | u16 iv16; | |
55 | u16 p1k[5]; | |
ca99861d | 56 | enum ieee80211_internal_tkip_state state; |
b0f76b33 HH |
57 | }; |
58 | ||
f0706e82 | 59 | struct ieee80211_key { |
11a843b7 JB |
60 | struct ieee80211_local *local; |
61 | struct ieee80211_sub_if_data *sdata; | |
62 | struct sta_info *sta; | |
63 | ||
3b96766f | 64 | /* for sdata list */ |
11a843b7 JB |
65 | struct list_head list; |
66 | ||
ad0e2b5a | 67 | /* protected by key mutex */ |
11a843b7 JB |
68 | unsigned int flags; |
69 | ||
f0706e82 JB |
70 | union { |
71 | struct { | |
72 | /* last used TSC */ | |
b0f76b33 | 73 | struct tkip_ctx tx; |
f0706e82 JB |
74 | |
75 | /* last received RSC */ | |
b0f76b33 | 76 | struct tkip_ctx rx[NUM_RX_DATA_QUEUES]; |
f0706e82 JB |
77 | } tkip; |
78 | struct { | |
79 | u8 tx_pn[6]; | |
9190252c JM |
80 | /* |
81 | * Last received packet number. The first | |
82 | * NUM_RX_DATA_QUEUES counters are used with Data | |
83 | * frames and the last counter is used with Robust | |
84 | * Management frames. | |
85 | */ | |
86 | u8 rx_pn[NUM_RX_DATA_QUEUES + 1][6]; | |
f0706e82 JB |
87 | struct crypto_cipher *tfm; |
88 | u32 replays; /* dot11RSNAStatsCCMPReplays */ | |
89 | /* scratch buffers for virt_to_page() (crypto API) */ | |
90 | #ifndef AES_BLOCK_LEN | |
91 | #define AES_BLOCK_LEN 16 | |
92 | #endif | |
93 | u8 tx_crypto_buf[6 * AES_BLOCK_LEN]; | |
94 | u8 rx_crypto_buf[6 * AES_BLOCK_LEN]; | |
95 | } ccmp; | |
765cb46a JM |
96 | struct { |
97 | u8 tx_pn[6]; | |
98 | u8 rx_pn[6]; | |
99 | struct crypto_cipher *tfm; | |
100 | u32 replays; /* dot11RSNAStatsCMACReplays */ | |
101 | u32 icverrors; /* dot11RSNAStatsCMACICVErrors */ | |
102 | /* scratch buffers for virt_to_page() (crypto API) */ | |
103 | u8 tx_crypto_buf[2 * AES_BLOCK_LEN]; | |
104 | u8 rx_crypto_buf[2 * AES_BLOCK_LEN]; | |
105 | } aes_cmac; | |
f0706e82 | 106 | } u; |
f0706e82 | 107 | |
8f20fc24 JB |
108 | /* number of times this key has been used */ |
109 | int tx_rx_count; | |
f0706e82 | 110 | |
e9f207f0 JB |
111 | #ifdef CONFIG_MAC80211_DEBUGFS |
112 | struct { | |
113 | struct dentry *stalink; | |
114 | struct dentry *dir; | |
d9c58f30 | 115 | int cnt; |
e9f207f0 JB |
116 | } debugfs; |
117 | #endif | |
118 | ||
8f20fc24 JB |
119 | /* |
120 | * key config, must be last because it contains key | |
121 | * material as variable length member | |
122 | */ | |
123 | struct ieee80211_key_conf conf; | |
f0706e82 JB |
124 | }; |
125 | ||
db4d1169 | 126 | struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg, |
11a843b7 JB |
127 | int idx, |
128 | 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 | */ | |
135 | void ieee80211_key_link(struct ieee80211_key *key, | |
136 | struct ieee80211_sub_if_data *sdata, | |
137 | struct sta_info *sta); | |
32162a4d JM |
138 | void ieee80211_key_free(struct ieee80211_local *local, |
139 | struct ieee80211_key *key); | |
11a843b7 | 140 | void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx); |
3cfcf6ac JM |
141 | void ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata, |
142 | int idx); | |
11a843b7 JB |
143 | void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata); |
144 | void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata); | |
145 | void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata); | |
146 | ||
f0706e82 | 147 | #endif /* IEEE80211_KEY_H */ |