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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /net/mac80211/key.h | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'net/mac80211/key.h')
-rw-r--r-- | net/mac80211/key.h | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/net/mac80211/key.h b/net/mac80211/key.h new file mode 100644 index 00000000..7d4e31f0 --- /dev/null +++ b/net/mac80211/key.h @@ -0,0 +1,150 @@ +/* + * Copyright 2002-2004, Instant802 Networks, Inc. + * Copyright 2005, Devicescape Software, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef IEEE80211_KEY_H +#define IEEE80211_KEY_H + +#include <linux/types.h> +#include <linux/list.h> +#include <linux/crypto.h> +#include <linux/rcupdate.h> +#include <net/mac80211.h> + +#define NUM_DEFAULT_KEYS 4 +#define NUM_DEFAULT_MGMT_KEYS 2 + +#define WEP_IV_LEN 4 +#define WEP_ICV_LEN 4 +#define ALG_CCMP_KEY_LEN 16 +#define CCMP_HDR_LEN 8 +#define CCMP_MIC_LEN 8 +#define CCMP_TK_LEN 16 +#define CCMP_PN_LEN 6 +#define TKIP_IV_LEN 8 +#define TKIP_ICV_LEN 4 +#define CMAC_PN_LEN 6 + +#define NUM_RX_DATA_QUEUES 16 + +struct ieee80211_local; +struct ieee80211_sub_if_data; +struct sta_info; + +/** + * enum ieee80211_internal_key_flags - internal key flags + * + * @KEY_FLAG_UPLOADED_TO_HARDWARE: Indicates that this key is present + * in the hardware for TX crypto hardware acceleration. + * @KEY_FLAG_TAINTED: Key is tainted and packets should be dropped. + */ +enum ieee80211_internal_key_flags { + KEY_FLAG_UPLOADED_TO_HARDWARE = BIT(0), + KEY_FLAG_TAINTED = BIT(1), +}; + +enum ieee80211_internal_tkip_state { + TKIP_STATE_NOT_INIT, + TKIP_STATE_PHASE1_DONE, + TKIP_STATE_PHASE1_HW_UPLOADED, +}; + +struct tkip_ctx { + u32 iv32; /* current iv32 */ + u16 iv16; /* current iv16 */ + u16 p1k[5]; /* p1k cache */ + u32 p1k_iv32; /* iv32 for which p1k computed */ + enum ieee80211_internal_tkip_state state; +}; + +struct ieee80211_key { + struct ieee80211_local *local; + struct ieee80211_sub_if_data *sdata; + struct sta_info *sta; + + /* for sdata list */ + struct list_head list; + + /* protected by key mutex */ + unsigned int flags; + + union { + struct { + /* protects tx context */ + spinlock_t txlock; + + /* last used TSC */ + struct tkip_ctx tx; + + /* last received RSC */ + struct tkip_ctx rx[NUM_RX_DATA_QUEUES]; + } tkip; + struct { + atomic64_t tx_pn; + /* + * Last received packet number. The first + * NUM_RX_DATA_QUEUES counters are used with Data + * frames and the last counter is used with Robust + * Management frames. + */ + u8 rx_pn[NUM_RX_DATA_QUEUES + 1][CCMP_PN_LEN]; + struct crypto_cipher *tfm; + u32 replays; /* dot11RSNAStatsCCMPReplays */ + } ccmp; + struct { + atomic64_t tx_pn; + u8 rx_pn[CMAC_PN_LEN]; + struct crypto_cipher *tfm; + u32 replays; /* dot11RSNAStatsCMACReplays */ + u32 icverrors; /* dot11RSNAStatsCMACICVErrors */ + } aes_cmac; + } u; + + /* number of times this key has been used */ + int tx_rx_count; + +#ifdef CONFIG_MAC80211_DEBUGFS + struct { + struct dentry *stalink; + struct dentry *dir; + int cnt; + } debugfs; +#endif + + /* + * key config, must be last because it contains key + * material as variable length member + */ + struct ieee80211_key_conf conf; +}; + +struct ieee80211_key *ieee80211_key_alloc(u32 cipher, int idx, size_t key_len, + const u8 *key_data, + size_t seq_len, const u8 *seq); +/* + * Insert a key into data structures (sdata, sta if necessary) + * to make it used, free old key. + */ +int __must_check ieee80211_key_link(struct ieee80211_key *key, + struct ieee80211_sub_if_data *sdata, + struct sta_info *sta); +void __ieee80211_key_free(struct ieee80211_key *key); +void ieee80211_key_free(struct ieee80211_local *local, + struct ieee80211_key *key); +void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx, + bool uni, bool multi); +void ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata, + int idx); +void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata); +void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata); +void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata); + +#define key_mtx_dereference(local, ref) \ + rcu_dereference_protected(ref, lockdep_is_held(&((local)->key_mtx))) + +#endif /* IEEE80211_KEY_H */ |