1 files changed, 108 insertions, 0 deletions

diff --git a/include/net/lib80211.h b/include/net/lib80211.h
index e1558a187ac0..dd1079f98da4 100644
--- a/include/net/lib80211.h
+++ b/include/net/lib80211.h
@@ -3,11 +3,32 @@
  *
  * Copyright (c) 2008, John W. Linville <linville@tuxdriver.com>
  *
+ * Some bits copied from old ieee80211 component, w/ original copyright
+ * notices below:
+ *
+ * Original code based on Host AP (software wireless LAN access point) driver
+ * for Intersil Prism2/2.5/3.
+ *
+ * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
+ * <j@w1.fi>
+ * Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
+ *
+ * Adaption to a generic IEEE 802.11 stack by James Ketrenos
+ * <jketreno@linux.intel.com>
+ *
+ * Copyright (c) 2004, Intel Corporation
+ *
  */
 
 #ifndef LIB80211_H
 #define LIB80211_H
 
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <asm/atomic.h>
+#include <linux/if.h>
+#include <linux/skbuff.h>
 #include <linux/ieee80211.h>
 
 /* print_ssid() is intended to be used in debug (and possibly error)
@@ -15,4 +36,91 @@
 const char *print_ssid(char *buf, const char *ssid, u8 ssid_len);
 #define DECLARE_SSID_BUF(var) char var[IEEE80211_MAX_SSID_LEN * 4 + 1] __maybe_unused
 
+#define NUM_WEP_KEYS    4
+
+enum {
+        IEEE80211_CRYPTO_TKIP_COUNTERMEASURES = (1 << 0),
+};
+
+struct lib80211_crypto_ops {
+        const char *name;
+        struct list_head list;
+
+        /* init new crypto context (e.g., allocate private data space,
+         * select IV, etc.); returns NULL on failure or pointer to allocated
+         * private data on success */
+        void *(*init) (int keyidx);
+
+        /* deinitialize crypto context and free allocated private data */
+        void (*deinit) (void *priv);
+
+        int (*build_iv) (struct sk_buff * skb, int hdr_len,
+                         u8 *key, int keylen, void *priv);
+
+        /* encrypt/decrypt return < 0 on error or >= 0 on success. The return
+         * value from decrypt_mpdu is passed as the keyidx value for
+         * decrypt_msdu. skb must have enough head and tail room for the
+         * encryption; if not, error will be returned; these functions are
+         * called for all MPDUs (i.e., fragments).
+         */
+        int (*encrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
+        int (*decrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
+
+        /* These functions are called for full MSDUs, i.e. full frames.
+         * These can be NULL if full MSDU operations are not needed. */
+        int (*encrypt_msdu) (struct sk_buff * skb, int hdr_len, void *priv);
+        int (*decrypt_msdu) (struct sk_buff * skb, int keyidx, int hdr_len,
+                             void *priv);
+
+        int (*set_key) (void *key, int len, u8 * seq, void *priv);
+        int (*get_key) (void *key, int len, u8 * seq, void *priv);
+
+        /* procfs handler for printing out key information and possible
+         * statistics */
+        char *(*print_stats) (char *p, void *priv);
+
+        /* Crypto specific flag get/set for configuration settings */
+        unsigned long (*get_flags) (void *priv);
+        unsigned long (*set_flags) (unsigned long flags, void *priv);
+
+        /* maximum number of bytes added by encryption; encrypt buf is
+         * allocated with extra_prefix_len bytes, copy of in_buf, and
+         * extra_postfix_len; encrypt need not use all this space, but
+         * the result must start at the beginning of the buffer and correct
+         * length must be returned */
+        int extra_mpdu_prefix_len, extra_mpdu_postfix_len;
+        int extra_msdu_prefix_len, extra_msdu_postfix_len;
+
+        struct module *owner;
+};
+
+struct lib80211_crypt_data {
+        struct list_head list;  /* delayed deletion list */
+        struct lib80211_crypto_ops *ops;
+        void *priv;
+        atomic_t refcnt;
+};
+
+struct lib80211_crypt_info {
+        char *name;
+        /* Most clients will already have a lock,
+           so just point to that. */
+        spinlock_t *lock;
+
+        struct lib80211_crypt_data *crypt[NUM_WEP_KEYS];
+        int tx_keyidx;          /* default TX key index (crypt[tx_keyidx]) */
+        struct list_head crypt_deinit_list;
+        struct timer_list crypt_deinit_timer;
+        int crypt_quiesced;
+};
+
+int lib80211_register_crypto_ops(struct lib80211_crypto_ops *ops);
+int lib80211_unregister_crypto_ops(struct lib80211_crypto_ops *ops);
+struct lib80211_crypto_ops *lib80211_get_crypto_ops(const char *name);
+void lib80211_crypt_deinit_entries(struct lib80211_crypt_info *, int);
+void lib80211_crypt_deinit_handler(unsigned long);
+void lib80211_crypt_delayed_deinit(struct lib80211_crypt_info *info,
+                                    struct lib80211_crypt_data **crypt);
+void lib80211_crypt_quiescing(struct lib80211_crypt_info *info);
+
 #endif /* LIB80211_H */