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20d64713ae
tree 367069f24fc38b4aa910e86ff40094d2078d8aa7
parent a33a198201
author James Ketrenos <jketreno@linux.intel.com> 1124430800 -0500
committer James Ketrenos <jketreno@linux.intel.com> 1127310571 -0500
Fixed a kernel oops on module unload by adding spin lock protection to
ieee80211's crypt handlers (thanks to Zhu Yi)
Modified scan result logic to report WPA and RSN IEs if set (vs.being
based on wpa_enabled)
Added ieee80211_device as the first parameter to the crypt init()
method. TKIP modified to use that structure for determining whether to
countermeasures are active.
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
87 lines
3.1 KiB
C
87 lines
3.1 KiB
C
/*
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* Original code based on Host AP (software wireless LAN access point) driver
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* for Intersil Prism2/2.5/3.
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*
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* Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
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* <jkmaline@cc.hut.fi>
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* Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
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*
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* Adaption to a generic IEEE 802.11 stack by James Ketrenos
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* <jketreno@linux.intel.com>
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*
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* Copyright (c) 2004, Intel Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation. See README and COPYING for
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* more details.
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*/
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/*
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* This file defines the interface to the ieee80211 crypto module.
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*/
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#ifndef IEEE80211_CRYPT_H
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#define IEEE80211_CRYPT_H
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#include <linux/skbuff.h>
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struct ieee80211_crypto_ops {
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const char *name;
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/* init new crypto context (e.g., allocate private data space,
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* select IV, etc.); returns NULL on failure or pointer to allocated
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* private data on success */
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void *(*init) (struct ieee80211_device * ieee, int keyidx);
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/* deinitialize crypto context and free allocated private data */
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void (*deinit) (void *priv);
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/* encrypt/decrypt return < 0 on error or >= 0 on success. The return
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* value from decrypt_mpdu is passed as the keyidx value for
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* decrypt_msdu. skb must have enough head and tail room for the
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* encryption; if not, error will be returned; these functions are
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* called for all MPDUs (i.e., fragments).
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*/
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int (*encrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
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int (*decrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
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/* These functions are called for full MSDUs, i.e. full frames.
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* These can be NULL if full MSDU operations are not needed. */
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int (*encrypt_msdu) (struct sk_buff * skb, int hdr_len, void *priv);
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int (*decrypt_msdu) (struct sk_buff * skb, int keyidx, int hdr_len,
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void *priv);
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int (*set_key) (void *key, int len, u8 * seq, void *priv);
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int (*get_key) (void *key, int len, u8 * seq, void *priv);
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/* procfs handler for printing out key information and possible
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* statistics */
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char *(*print_stats) (char *p, void *priv);
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/* maximum number of bytes added by encryption; encrypt buf is
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* allocated with extra_prefix_len bytes, copy of in_buf, and
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* extra_postfix_len; encrypt need not use all this space, but
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* the result must start at the beginning of the buffer and correct
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* length must be returned */
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int extra_prefix_len, extra_postfix_len;
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struct module *owner;
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};
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struct ieee80211_crypt_data {
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struct list_head list; /* delayed deletion list */
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struct ieee80211_crypto_ops *ops;
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void *priv;
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atomic_t refcnt;
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};
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int ieee80211_register_crypto_ops(struct ieee80211_crypto_ops *ops);
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int ieee80211_unregister_crypto_ops(struct ieee80211_crypto_ops *ops);
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struct ieee80211_crypto_ops *ieee80211_get_crypto_ops(const char *name);
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void ieee80211_crypt_deinit_entries(struct ieee80211_device *, int);
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void ieee80211_crypt_deinit_handler(unsigned long);
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void ieee80211_crypt_delayed_deinit(struct ieee80211_device *ieee,
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struct ieee80211_crypt_data **crypt);
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#endif
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