linux-imx

    .mmap       =   sock_no_mmap,

    .bind       =   sock_no_bind,

    .accept     =   sock_no_accept,

    .setsockopt =   sock_no_setsockopt,

​

    .release    =   af_alg_release,

    .sendmsg    =   skcipher_sendmsg,

    .sendpage   =   af_alg_sendpage,

    .recvmsg    =   skcipher_recvmsg,

};

​

static int skcipher_check_key(struct socket *sock)

{

    int err = 0;

    struct sock *psk;

    struct alg_sock *pask;

    struct crypto_skcipher *tfm;

    struct sock *sk = sock->sk;

    struct alg_sock *ask = alg_sk(sk);

    .mmap       =   sock_no_mmap,

    .bind       =   sock_no_bind,

    .accept     =   sock_no_accept,

    .setsockopt =   sock_no_setsockopt,

​

    .release    =   af_alg_release,

    .sendmsg    =   skcipher_sendmsg_nokey,

    .sendpage   =   skcipher_sendpage_nokey,

    .recvmsg    =   skcipher_recvmsg_nokey,

};

​

static void *skcipher_bind(const char *name, u32 type, u32 mask)

{

    return crypto_alloc_skcipher(name, type, mask);

}

​

static void skcipher_release(void *private)

{

    crypto_free_skcipher(private);