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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /net/mac80211/key.h
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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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.h150
1 files changed, 150 insertions, 0 deletions
diff --git a/net/mac80211/key.h b/net/mac80211/key.h
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+++ 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 */