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8#ifndef IEEE80211_KEY_H
9#define IEEE80211_KEY_H
10
11#include <linux/types.h>
12#include <linux/list.h>
13#include <linux/crypto.h>
14#include <linux/rcupdate.h>
15#include <crypto/arc4.h>
16#include <net/mac80211.h>
17
18#define NUM_DEFAULT_KEYS 4
19#define NUM_DEFAULT_MGMT_KEYS 2
20#define NUM_DEFAULT_BEACON_KEYS 2
21#define INVALID_PTK_KEYIDX 2
22
23struct ieee80211_local;
24struct ieee80211_sub_if_data;
25struct sta_info;
26
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32
33
34
35enum ieee80211_internal_key_flags {
36 KEY_FLAG_UPLOADED_TO_HARDWARE = BIT(0),
37 KEY_FLAG_TAINTED = BIT(1),
38 KEY_FLAG_CIPHER_SCHEME = BIT(2),
39};
40
41enum ieee80211_internal_tkip_state {
42 TKIP_STATE_NOT_INIT,
43 TKIP_STATE_PHASE1_DONE,
44 TKIP_STATE_PHASE1_HW_UPLOADED,
45};
46
47struct tkip_ctx {
48 u16 p1k[5];
49 u32 p1k_iv32;
50 enum ieee80211_internal_tkip_state state;
51};
52
53struct tkip_ctx_rx {
54 struct tkip_ctx ctx;
55 u32 iv32;
56 u16 iv16;
57};
58
59struct ieee80211_key {
60 struct ieee80211_local *local;
61 struct ieee80211_sub_if_data *sdata;
62 struct sta_info *sta;
63
64
65 struct list_head list;
66
67
68 unsigned int flags;
69
70 union {
71 struct {
72
73 spinlock_t txlock;
74
75
76 struct tkip_ctx tx;
77
78
79 struct tkip_ctx_rx rx[IEEE80211_NUM_TIDS];
80
81
82 u32 mic_failures;
83 } tkip;
84 struct {
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90
91 u8 rx_pn[IEEE80211_NUM_TIDS + 1][IEEE80211_CCMP_PN_LEN];
92 struct crypto_aead *tfm;
93 u32 replays;
94 } ccmp;
95 struct {
96 u8 rx_pn[IEEE80211_CMAC_PN_LEN];
97 struct crypto_shash *tfm;
98 u32 replays;
99 u32 icverrors;
100 } aes_cmac;
101 struct {
102 u8 rx_pn[IEEE80211_GMAC_PN_LEN];
103 struct crypto_aead *tfm;
104 u32 replays;
105 u32 icverrors;
106 } aes_gmac;
107 struct {
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112
113 u8 rx_pn[IEEE80211_NUM_TIDS + 1][IEEE80211_GCMP_PN_LEN];
114 struct crypto_aead *tfm;
115 u32 replays;
116 } gcmp;
117 struct {
118
119 u8 rx_pn[IEEE80211_NUM_TIDS + 1][IEEE80211_MAX_PN_LEN];
120 } gen;
121 } u;
122
123#ifdef CONFIG_MAC80211_DEBUGFS
124 struct {
125 struct dentry *stalink;
126 struct dentry *dir;
127 int cnt;
128 } debugfs;
129#endif
130
131 unsigned int color;
132
133
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135
136
137 struct ieee80211_key_conf conf;
138};
139
140struct ieee80211_key *
141ieee80211_key_alloc(u32 cipher, int idx, size_t key_len,
142 const u8 *key_data,
143 size_t seq_len, const u8 *seq,
144 const struct ieee80211_cipher_scheme *cs);
145
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147
148
149int ieee80211_key_link(struct ieee80211_key *key,
150 struct ieee80211_sub_if_data *sdata,
151 struct sta_info *sta);
152int ieee80211_set_tx_key(struct ieee80211_key *key);
153void ieee80211_key_free(struct ieee80211_key *key, bool delay_tailroom);
154void ieee80211_key_free_unused(struct ieee80211_key *key);
155void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx,
156 bool uni, bool multi);
157void ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata,
158 int idx);
159void ieee80211_set_default_beacon_key(struct ieee80211_sub_if_data *sdata,
160 int idx);
161void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata,
162 bool force_synchronize);
163void ieee80211_free_sta_keys(struct ieee80211_local *local,
164 struct sta_info *sta);
165void ieee80211_reenable_keys(struct ieee80211_sub_if_data *sdata);
166
167#define key_mtx_dereference(local, ref) \
168 rcu_dereference_protected(ref, lockdep_is_held(&((local)->key_mtx)))
169
170void ieee80211_delayed_tailroom_dec(struct work_struct *wk);
171
172#endif
173