1 /* SPDX-License-Identifier: GPL-2.0-only */ <<
2 /* 1 /*
3 * Copyright 2002-2004, Instant802 Networks, I 2 * Copyright 2002-2004, Instant802 Networks, Inc.
4 * Copyright 2005, Devicescape Software, Inc. 3 * Copyright 2005, Devicescape Software, Inc.
5 * Copyright (C) 2019, 2022-2023 Intel Corpora !! 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.
6 */ 8 */
7 9
8 #ifndef IEEE80211_KEY_H 10 #ifndef IEEE80211_KEY_H
9 #define IEEE80211_KEY_H 11 #define IEEE80211_KEY_H
10 12
11 #include <linux/types.h> 13 #include <linux/types.h>
12 #include <linux/list.h> 14 #include <linux/list.h>
13 #include <linux/crypto.h> 15 #include <linux/crypto.h>
14 #include <linux/rcupdate.h> 16 #include <linux/rcupdate.h>
15 #include <crypto/arc4.h> <<
16 #include <net/mac80211.h> 17 #include <net/mac80211.h>
17 18
18 #define NUM_DEFAULT_KEYS 4 19 #define NUM_DEFAULT_KEYS 4
19 #define NUM_DEFAULT_MGMT_KEYS 2 20 #define NUM_DEFAULT_MGMT_KEYS 2
20 #define NUM_DEFAULT_BEACON_KEYS 2 !! 21
21 #define INVALID_PTK_KEYIDX 2 /* Keyidx always !! 22 #define WEP_IV_LEN 4
>> 23 #define WEP_ICV_LEN 4
>> 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 #define CMAC_PN_LEN 6
22 32
23 struct ieee80211_local; 33 struct ieee80211_local;
24 struct ieee80211_sub_if_data; 34 struct ieee80211_sub_if_data;
25 struct ieee80211_link_data; <<
26 struct sta_info; 35 struct sta_info;
27 36
28 /** 37 /**
29 * enum ieee80211_internal_key_flags - interna 38 * enum ieee80211_internal_key_flags - internal key flags
30 * 39 *
31 * @KEY_FLAG_UPLOADED_TO_HARDWARE: Indicates t 40 * @KEY_FLAG_UPLOADED_TO_HARDWARE: Indicates that this key is present
32 * in the hardware for TX crypto hardware 41 * in the hardware for TX crypto hardware acceleration.
33 * @KEY_FLAG_TAINTED: Key is tainted and packe 42 * @KEY_FLAG_TAINTED: Key is tainted and packets should be dropped.
34 */ 43 */
35 enum ieee80211_internal_key_flags { 44 enum ieee80211_internal_key_flags {
36 KEY_FLAG_UPLOADED_TO_HARDWARE = BIT( 45 KEY_FLAG_UPLOADED_TO_HARDWARE = BIT(0),
37 KEY_FLAG_TAINTED = BIT( 46 KEY_FLAG_TAINTED = BIT(1),
38 }; 47 };
39 48
40 enum ieee80211_internal_tkip_state { 49 enum ieee80211_internal_tkip_state {
41 TKIP_STATE_NOT_INIT, 50 TKIP_STATE_NOT_INIT,
42 TKIP_STATE_PHASE1_DONE, 51 TKIP_STATE_PHASE1_DONE,
43 TKIP_STATE_PHASE1_HW_UPLOADED, 52 TKIP_STATE_PHASE1_HW_UPLOADED,
44 }; 53 };
45 54
46 struct tkip_ctx { 55 struct tkip_ctx {
>> 56 u32 iv32; /* current iv32 */
>> 57 u16 iv16; /* current iv16 */
47 u16 p1k[5]; /* p1k cache */ 58 u16 p1k[5]; /* p1k cache */
48 u32 p1k_iv32; /* iv32 for which p1k 59 u32 p1k_iv32; /* iv32 for which p1k computed */
49 enum ieee80211_internal_tkip_state sta 60 enum ieee80211_internal_tkip_state state;
50 }; 61 };
51 62
52 struct tkip_ctx_rx { <<
53 struct tkip_ctx ctx; <<
54 u32 iv32; /* current iv32 */ <<
55 u16 iv16; /* current iv16 */ <<
56 }; <<
57 <<
58 struct ieee80211_key { 63 struct ieee80211_key {
59 struct ieee80211_local *local; 64 struct ieee80211_local *local;
60 struct ieee80211_sub_if_data *sdata; 65 struct ieee80211_sub_if_data *sdata;
61 struct sta_info *sta; 66 struct sta_info *sta;
62 67
63 /* for sdata list */ 68 /* for sdata list */
64 struct list_head list; 69 struct list_head list;
65 70
66 /* protected by key mutex */ 71 /* protected by key mutex */
67 unsigned int flags; 72 unsigned int flags;
68 73
69 union { 74 union {
70 struct { 75 struct {
71 /* protects tx context 76 /* protects tx context */
72 spinlock_t txlock; 77 spinlock_t txlock;
73 78
74 /* last used TSC */ 79 /* last used TSC */
75 struct tkip_ctx tx; 80 struct tkip_ctx tx;
76 81
77 /* last received RSC * 82 /* last received RSC */
78 struct tkip_ctx_rx rx[ !! 83 struct tkip_ctx rx[IEEE80211_NUM_TIDS];
79 84
80 /* number of mic failu 85 /* number of mic failures */
81 u32 mic_failures; 86 u32 mic_failures;
82 } tkip; 87 } tkip;
83 struct { 88 struct {
>> 89 atomic64_t tx_pn;
84 /* 90 /*
85 * Last received packe 91 * Last received packet number. The first
86 * IEEE80211_NUM_TIDS 92 * IEEE80211_NUM_TIDS counters are used with Data
87 * frames and the last 93 * frames and the last counter is used with Robust
88 * Management frames. 94 * Management frames.
89 */ 95 */
90 u8 rx_pn[IEEE80211_NUM !! 96 u8 rx_pn[IEEE80211_NUM_TIDS + 1][CCMP_PN_LEN];
91 struct crypto_aead *tf !! 97 struct crypto_cipher *tfm;
92 u32 replays; /* dot11R 98 u32 replays; /* dot11RSNAStatsCCMPReplays */
93 } ccmp; 99 } ccmp;
94 struct { 100 struct {
95 u8 rx_pn[IEEE80211_CMA !! 101 atomic64_t tx_pn;
96 struct crypto_shash *t !! 102 u8 rx_pn[CMAC_PN_LEN];
>> 103 struct crypto_cipher *tfm;
97 u32 replays; /* dot11R 104 u32 replays; /* dot11RSNAStatsCMACReplays */
98 u32 icverrors; /* dot1 105 u32 icverrors; /* dot11RSNAStatsCMACICVErrors */
99 } aes_cmac; 106 } aes_cmac;
100 struct { <<
101 u8 rx_pn[IEEE80211_GMA <<
102 struct crypto_aead *tf <<
103 u32 replays; /* dot11R <<
104 u32 icverrors; /* dot1 <<
105 } aes_gmac; <<
106 struct { <<
107 /* Last received packe <<
108 * IEEE80211_NUM_TIDS <<
109 * frames and the last <<
110 * Management frames. <<
111 */ <<
112 u8 rx_pn[IEEE80211_NUM <<
113 struct crypto_aead *tf <<
114 u32 replays; /* dot11R <<
115 } gcmp; <<
116 struct { <<
117 /* generic cipher sche <<
118 u8 rx_pn[IEEE80211_NUM <<
119 } gen; <<
120 } u; 107 } u;
121 108
>> 109 /* number of times this key has been used */
>> 110 int tx_rx_count;
>> 111
122 #ifdef CONFIG_MAC80211_DEBUGFS 112 #ifdef CONFIG_MAC80211_DEBUGFS
123 struct { 113 struct {
124 struct dentry *stalink; 114 struct dentry *stalink;
125 struct dentry *dir; 115 struct dentry *dir;
126 int cnt; 116 int cnt;
127 } debugfs; 117 } debugfs;
128 #endif 118 #endif
129 119
130 unsigned int color; <<
131 <<
132 /* 120 /*
133 * key config, must be last because it 121 * key config, must be last because it contains key
134 * material as variable length member 122 * material as variable length member
135 */ 123 */
136 struct ieee80211_key_conf conf; 124 struct ieee80211_key_conf conf;
137 }; 125 };
138 126
139 struct ieee80211_key * !! 127 struct ieee80211_key *ieee80211_key_alloc(u32 cipher, int idx, size_t key_len,
140 ieee80211_key_alloc(u32 cipher, int idx, size_ !! 128 const u8 *key_data,
141 const u8 *key_data, !! 129 size_t seq_len, const u8 *seq);
142 size_t seq_len, const u8 * <<
143 /* 130 /*
144 * Insert a key into data structures (sdata, s 131 * Insert a key into data structures (sdata, sta if necessary)
145 * to make it used, free old key. On failure, 132 * to make it used, free old key. On failure, also free the new key.
146 */ 133 */
147 int ieee80211_key_link(struct ieee80211_key *k 134 int ieee80211_key_link(struct ieee80211_key *key,
148 struct ieee80211_link_d !! 135 struct ieee80211_sub_if_data *sdata,
149 struct sta_info *sta); 136 struct sta_info *sta);
150 int ieee80211_set_tx_key(struct ieee80211_key <<
151 void ieee80211_key_free(struct ieee80211_key * 137 void ieee80211_key_free(struct ieee80211_key *key, bool delay_tailroom);
152 void ieee80211_key_free_unused(struct ieee8021 138 void ieee80211_key_free_unused(struct ieee80211_key *key);
153 void ieee80211_set_default_key(struct ieee8021 !! 139 void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx,
154 bool uni, bool 140 bool uni, bool multi);
155 void ieee80211_set_default_mgmt_key(struct iee !! 141 void ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata,
156 int idx); 142 int idx);
157 void ieee80211_set_default_beacon_key(struct i !! 143 void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata);
158 int idx) <<
159 void ieee80211_remove_link_keys(struct ieee802 <<
160 struct list_he <<
161 void ieee80211_free_key_list(struct ieee80211_ <<
162 struct list_head <<
163 void ieee80211_free_keys(struct ieee80211_sub_ <<
164 bool force_synchroniz <<
165 void ieee80211_free_sta_keys(struct ieee80211_ 144 void ieee80211_free_sta_keys(struct ieee80211_local *local,
166 struct sta_info * 145 struct sta_info *sta);
167 void ieee80211_reenable_keys(struct ieee80211_ !! 146 void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata);
168 int ieee80211_key_switch_links(struct ieee8021 !! 147
169 unsigned long d !! 148 #define key_mtx_dereference(local, ref) \
170 unsigned long a !! 149 rcu_dereference_protected(ref, lockdep_is_held(&((local)->key_mtx)))
171 void ieee80211_delayed_tailroom_dec(struct wip !! 150
172 struct wip !! 151 void ieee80211_delayed_tailroom_dec(struct work_struct *wk);
173 152
174 #endif /* IEEE80211_KEY_H */ 153 #endif /* IEEE80211_KEY_H */
175 154
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