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- #ifndef PRISM2_CRYPT_H
- #define PRISM2_CRYPT_H
- struct hostap_crypto_ops {
- 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;
- };
- int hostap_register_crypto_ops(struct hostap_crypto_ops *ops);
- int hostap_unregister_crypto_ops(struct hostap_crypto_ops *ops);
- struct hostap_crypto_ops * hostap_get_crypto_ops(const char *name);
- #endif /* PRISM2_CRYPT_H */
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