[MAC80211]: Add mac80211 wireless stack.

Add mac80211, the IEEE 802.11 software MAC layer.

Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 89 insertions, 0 deletions

diff --git a/net/mac80211/ieee80211_key.h b/net/mac80211/ieee80211_key.h
new file mode 100644
index 000000000000..da67d87705d7
--- /dev/null
+++ b/net/mac80211/ieee80211_key.h
@@ -0,0 +1,89 @@
+/*
+ * 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/kref.h>
+#include <linux/crypto.h>
+#include <net/mac80211.h>
+
+/* ALG_TKIP
+ * struct ieee80211_key::key is encoded as a 256-bit (32 byte) data block:
+ * Temporal Encryption Key (128 bits)
+ * Temporal Authenticator Tx MIC Key (64 bits)
+ * Temporal Authenticator Rx MIC Key (64 bits)
+ */
+
+#define WEP_IV_LEN 4
+#define WEP_ICV_LEN 4
+
+#define ALG_TKIP_KEY_LEN 32
+/* Starting offsets for each key */
+#define ALG_TKIP_TEMP_ENCR_KEY 0
+#define ALG_TKIP_TEMP_AUTH_TX_MIC_KEY 16
+#define ALG_TKIP_TEMP_AUTH_RX_MIC_KEY 24
+#define TKIP_IV_LEN 8
+#define TKIP_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 NUM_RX_DATA_QUEUES 17
+
+struct ieee80211_key {
+        struct kref kref;
+
+        int hw_key_idx; /* filled and used by low-level driver */
+        ieee80211_key_alg alg;
+        union {
+                struct {
+                        /* last used TSC */
+                        u32 iv32;
+                        u16 iv16;
+                        u16 p1k[5];
+                        int tx_initialized;
+
+                        /* last received RSC */
+                        u32 iv32_rx[NUM_RX_DATA_QUEUES];
+                        u16 iv16_rx[NUM_RX_DATA_QUEUES];
+                        u16 p1k_rx[NUM_RX_DATA_QUEUES][5];
+                        int rx_initialized[NUM_RX_DATA_QUEUES];
+                } tkip;
+                struct {
+                        u8 tx_pn[6];
+                        u8 rx_pn[NUM_RX_DATA_QUEUES][6];
+                        struct crypto_cipher *tfm;
+                        u32 replays; /* dot11RSNAStatsCCMPReplays */
+                        /* scratch buffers for virt_to_page() (crypto API) */
+#ifndef AES_BLOCK_LEN
+#define AES_BLOCK_LEN 16
+#endif
+                        u8 tx_crypto_buf[6 * AES_BLOCK_LEN];
+                        u8 rx_crypto_buf[6 * AES_BLOCK_LEN];
+                } ccmp;
+        } u;
+        int tx_rx_count; /* number of times this key has been used */
+        int keylen;
+
+        /* if the low level driver can provide hardware acceleration it should
+         * clear this flag */
+        unsigned int force_sw_encrypt:1;
+        unsigned int default_tx_key:1; /* This key is the new default TX key
+                                        * (used only for broadcast keys). */
+        s8 keyidx; /* WEP key index */
+
+        u8 key[0];
+};
+
+#endif /* IEEE80211_KEY_H */