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/* SPDX-License-Identifier: GPL-2.0 *//* * lib80211.h -- common bits for IEEE802.11 wireless drivers * * 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 * */enum { IEEE80211_CRYPTO_TKIP_COUNTERMEASURES = (1 << 0),};struct module;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); /* 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 */ void (*print_stats) (struct seq_file *m, 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;};