3 files changed, 97 insertions, 41 deletions

diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index a1478258d002..8a2df4dfbc59 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -65,7 +65,7 @@ static inline int is_zero_ether_addr(const u8 *addr)
  */
 static inline int is_multicast_ether_addr(const u8 *addr)
 {
-        return addr[0] & 0x01;
+        return ((addr[0] != 0xff) && (0x01 & addr[0]));
 }
 
 /**
diff --git a/include/net/ieee80211.h b/include/net/ieee80211.h
index 7fe57f957a51..065b702df563 100644
--- a/include/net/ieee80211.h
+++ b/include/net/ieee80211.h
@@ -20,7 +20,6 @@
  */
 #ifndef IEEE80211_H
 #define IEEE80211_H
-
 #include <linux/if_ether.h> /* ETH_ALEN */
 #include <linux/kernel.h>   /* ARRAY_SIZE */
 
@@ -94,6 +93,8 @@ struct eapol {
         u16 length;
 } __attribute__ ((packed));
 
+#define IEEE80211_1ADDR_LEN 10
+#define IEEE80211_2ADDR_LEN 16
 #define IEEE80211_3ADDR_LEN 24
 #define IEEE80211_4ADDR_LEN 30
 #define IEEE80211_FCS_LEN    4
@@ -300,23 +301,6 @@ struct ieee80211_snap_hdr {
 #define WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH 9
 
 
-/* Information Element IDs */
-#define WLAN_EID_SSID 0
-#define WLAN_EID_SUPP_RATES 1
-#define WLAN_EID_FH_PARAMS 2
-#define WLAN_EID_DS_PARAMS 3
-#define WLAN_EID_CF_PARAMS 4
-#define WLAN_EID_TIM 5
-#define WLAN_EID_IBSS_PARAMS 6
-#define WLAN_EID_CHALLENGE 16
-#define WLAN_EID_RSN 48
-#define WLAN_EID_GENERIC 221
-
-#define IEEE80211_MGMT_HDR_LEN 24
-#define IEEE80211_DATA_HDR3_LEN 24
-#define IEEE80211_DATA_HDR4_LEN 30
-
-
 #define IEEE80211_STATMASK_SIGNAL (1<<0)
 #define IEEE80211_STATMASK_RSSI (1<<1)
 #define IEEE80211_STATMASK_NOISE (1<<2)
@@ -441,6 +425,8 @@ struct ieee80211_stats {
 
 struct ieee80211_device;
 
+#include "ieee80211_crypt.h"
+
 #define SEC_KEY_1         (1<<0)
 #define SEC_KEY_2         (1<<1)
 #define SEC_KEY_3         (1<<2)
@@ -488,15 +474,6 @@ Total: 28-2340 bytes
 
 */
 
-struct ieee80211_header_data {
-        u16 frame_ctl;
-        u16 duration_id;
-        u8 addr1[6];
-        u8 addr2[6];
-        u8 addr3[6];
-        u16 seq_ctrl;
-};
-
 #define BEACON_PROBE_SSID_ID_POSITION 12
 
 /* Management Frame Information Element Types */
@@ -541,7 +518,7 @@ struct ieee80211_info_element {
 */
 
 struct ieee80211_authentication {
-        struct ieee80211_header_data header;
+        struct ieee80211_hdr_3addr header;
         u16 algorithm;
         u16 transaction;
         u16 status;
@@ -550,7 +527,7 @@ struct ieee80211_authentication {
 
 
 struct ieee80211_probe_response {
-        struct ieee80211_header_data header;
+        struct ieee80211_hdr_3addr header;
         u32 time_stamp[2];
         u16 beacon_interval;
         u16 capability;
@@ -648,12 +625,6 @@ enum ieee80211_state {
 #define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
 
 
-extern inline int is_broadcast_ether_addr(const u8 *addr)
-{
-        return ((addr[0] == 0xff) && (addr[1] == 0xff) && (addr[2] == 0xff) &&   \
-                (addr[3] == 0xff) && (addr[4] == 0xff) && (addr[5] == 0xff));
-}
-
 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
 
@@ -787,21 +758,21 @@ extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee, int mod
 
 extern inline int ieee80211_get_hdrlen(u16 fc)
 {
-        int hdrlen = 24;
+        int hdrlen = IEEE80211_3ADDR_LEN;
 
         switch (WLAN_FC_GET_TYPE(fc)) {
         case IEEE80211_FTYPE_DATA:
                 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
-                        hdrlen = 30; /* Addr4 */
+                        hdrlen = IEEE80211_4ADDR_LEN;
                 break;
         case IEEE80211_FTYPE_CTL:
                 switch (WLAN_FC_GET_STYPE(fc)) {
                 case IEEE80211_STYPE_CTS:
                 case IEEE80211_STYPE_ACK:
-                        hdrlen = 10;
+                        hdrlen = IEEE80211_1ADDR_LEN;
                         break;
                 default:
-                        hdrlen = 16;
+                        hdrlen = IEEE80211_2ADDR_LEN;
                         break;
                 }
                 break;
@@ -878,5 +849,4 @@ static inline const char *escape_essid(const char *essid, u8 essid_len) {
         *d = '\0';
         return escaped;
 }
-
 #endif /* IEEE80211_H */
diff --git a/include/net/ieee80211_crypt.h b/include/net/ieee80211_crypt.h
new file mode 100644
index 000000000000..b58a3bcc0dc0
--- /dev/null
+++ b/include/net/ieee80211_crypt.h
@@ -0,0 +1,86 @@
+/*
+ * 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
+ * <jkmaline@cc.hut.fi>
+ * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
+ *
+ * Adaption to a generic IEEE 802.11 stack by James Ketrenos
+ * <jketreno@linux.intel.com>
+ *
+ * Copyright (c) 2004, Intel Corporation
+ *
+ * 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. See README and COPYING for
+ * more details.
+ */
+
+/*
+ * This file defines the interface to the ieee80211 crypto module.
+ */
+#ifndef IEEE80211_CRYPT_H
+#define IEEE80211_CRYPT_H
+
+#include <linux/skbuff.h>
+
+struct ieee80211_crypto_ops {
+        const char *name;
+
+        /* 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);
+
+        /* 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);
+
+        /* 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_prefix_len, extra_postfix_len;
+
+        struct module *owner;
+};
+
+struct ieee80211_crypt_data {
+        struct list_head list; /* delayed deletion list */
+        struct ieee80211_crypto_ops *ops;
+        void *priv;
+        atomic_t refcnt;
+};
+
+int ieee80211_register_crypto_ops(struct ieee80211_crypto_ops *ops);
+int ieee80211_unregister_crypto_ops(struct ieee80211_crypto_ops *ops);
+struct ieee80211_crypto_ops * ieee80211_get_crypto_ops(const char *name);
+void ieee80211_crypt_deinit_entries(struct ieee80211_device *, int);
+void ieee80211_crypt_deinit_handler(unsigned long);
+void ieee80211_crypt_delayed_deinit(struct ieee80211_device *ieee,
+                                    struct ieee80211_crypt_data **crypt);
+
+#endif