de47725421
The <linux/module.h> pretty much brings in the kitchen sink along with it, so it should be avoided wherever reasonably possible in terms of being included from other commonly used <linux/something.h> files, as it results in a measureable increase on compile times. The worst culprit was probably device.h since it is used everywhere. This file also had an implicit dependency/usage of mutex.h which was masked by module.h, and is also fixed here at the same time. There are over a dozen other headers that simply declare the struct instead of pulling in the whole file, so follow their lead and simply make it a few more. Most of the implicit dependencies on module.h being present by these headers pulling it in have been now weeded out, so we can finally make this change with hopefully minimal breakage. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
125 lines
4.1 KiB
C
125 lines
4.1 KiB
C
/*
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* lib80211.h -- common bits for IEEE802.11 wireless drivers
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*
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* Copyright (c) 2008, John W. Linville <linville@tuxdriver.com>
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*
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* Some bits copied from old ieee80211 component, w/ original copyright
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* notices below:
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*
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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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* <j@w1.fi>
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* Copyright (c) 2002-2003, Jouni Malinen <j@w1.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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*/
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#ifndef LIB80211_H
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#define LIB80211_H
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#include <linux/types.h>
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#include <linux/list.h>
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#include <linux/atomic.h>
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#include <linux/if.h>
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#include <linux/skbuff.h>
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#include <linux/ieee80211.h>
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#include <linux/timer.h>
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/* print_ssid() is intended to be used in debug (and possibly error)
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* messages. It should never be used for passing ssid to user space. */
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const char *print_ssid(char *buf, const char *ssid, u8 ssid_len);
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#define DECLARE_SSID_BUF(var) char var[IEEE80211_MAX_SSID_LEN * 4 + 1] __maybe_unused
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#define NUM_WEP_KEYS 4
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enum {
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IEEE80211_CRYPTO_TKIP_COUNTERMEASURES = (1 << 0),
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};
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struct module;
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struct lib80211_crypto_ops {
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const char *name;
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struct list_head list;
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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) (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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/* Crypto specific flag get/set for configuration settings */
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unsigned long (*get_flags) (void *priv);
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unsigned long (*set_flags) (unsigned long flags, 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_mpdu_prefix_len, extra_mpdu_postfix_len;
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int extra_msdu_prefix_len, extra_msdu_postfix_len;
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struct module *owner;
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};
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struct lib80211_crypt_data {
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struct list_head list; /* delayed deletion list */
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struct lib80211_crypto_ops *ops;
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void *priv;
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atomic_t refcnt;
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};
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struct lib80211_crypt_info {
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char *name;
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/* Most clients will already have a lock,
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so just point to that. */
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spinlock_t *lock;
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struct lib80211_crypt_data *crypt[NUM_WEP_KEYS];
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int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
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struct list_head crypt_deinit_list;
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struct timer_list crypt_deinit_timer;
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int crypt_quiesced;
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};
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int lib80211_crypt_info_init(struct lib80211_crypt_info *info, char *name,
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spinlock_t *lock);
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void lib80211_crypt_info_free(struct lib80211_crypt_info *info);
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int lib80211_register_crypto_ops(struct lib80211_crypto_ops *ops);
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int lib80211_unregister_crypto_ops(struct lib80211_crypto_ops *ops);
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struct lib80211_crypto_ops *lib80211_get_crypto_ops(const char *name);
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void lib80211_crypt_delayed_deinit(struct lib80211_crypt_info *info,
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struct lib80211_crypt_data **crypt);
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#endif /* LIB80211_H */
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