4 struct hostap_crypto_ops {
7 /* init new crypto context (e.g., allocate private data space,
8 * select IV, etc.); returns NULL on failure or pointer to allocated
9 * private data on success */
10 void * (*init)(int keyidx);
12 /* deinitialize crypto context and free allocated private data */
13 void (*deinit)(void *priv);
15 /* encrypt/decrypt return < 0 on error or >= 0 on success. The return
16 * value from decrypt_mpdu is passed as the keyidx value for
17 * decrypt_msdu. skb must have enough head and tail room for the
18 * encryption; if not, error will be returned; these functions are
19 * called for all MPDUs (i.e., fragments).
21 int (*encrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);
22 int (*decrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);
24 /* These functions are called for full MSDUs, i.e. full frames.
25 * These can be NULL if full MSDU operations are not needed. */
26 int (*encrypt_msdu)(struct sk_buff *skb, int hdr_len, void *priv);
27 int (*decrypt_msdu)(struct sk_buff *skb, int keyidx, int hdr_len,
30 int (*set_key)(void *key, int len, u8 *seq, void *priv);
31 int (*get_key)(void *key, int len, u8 *seq, void *priv);
33 /* procfs handler for printing out key information and possible
35 char * (*print_stats)(char *p, void *priv);
37 /* maximum number of bytes added by encryption; encrypt buf is
38 * allocated with extra_prefix_len bytes, copy of in_buf, and
39 * extra_postfix_len; encrypt need not use all this space, but
40 * the result must start at the beginning of the buffer and correct
41 * length must be returned */
42 int extra_prefix_len, extra_postfix_len;
46 int hostap_register_crypto_ops(struct hostap_crypto_ops *ops);
47 int hostap_unregister_crypto_ops(struct hostap_crypto_ops *ops);
48 struct hostap_crypto_ops * hostap_get_crypto_ops(const char *name);
50 #endif /* PRISM2_CRYPT_H */