ACIL FM

Nama	Ukuran	Aksi
internal	-	Open
acompress.h	8.9 MB	View DL Edit
aead.h	18.39 MB	View DL Edit
aes.h	2.5 MB	View DL Edit
akcipher.h	12.92 MB	View DL Edit
algapi.h	7.15 MB	View DL Edit
arc4.h	484 B	View DL Edit
asym_tpm_subtype.h	521 B	View DL Edit
authenc.h	635 B	View DL Edit
b128ops.h	2.41 MB	View DL Edit
blake2b.h	1.6 MB	View DL Edit
blake2s.h	2.72 MB	View DL Edit
blowfish.h	415 B	View DL Edit
cast5.h	590 B	View DL Edit
cast6.h	607 B	View DL Edit
cast_common.h	232 B	View DL Edit
chacha.h	3.32 MB	View DL Edit
chacha20poly1305.h	1.66 MB	View DL Edit
cryptd.h	2 MB	View DL Edit
ctr.h	1.42 MB	View DL Edit
curve25519.h	2.02 MB	View DL Edit
des.h	1.68 MB	View DL Edit
dh.h	3.03 MB	View DL Edit
drbg.h	8.99 MB	View DL Edit
ecc_curve.h	1.31 MB	View DL Edit
ecdh.h	2.43 MB	View DL Edit
engine.h	4.11 MB	View DL Edit
gcm.h	867 B	View DL Edit
gf128mul.h	9.42 MB	View DL Edit
ghash.h	388 B	View DL Edit
hash.h	34.11 MB	View DL Edit
hash_info.h	998 B	View DL Edit
hmac.h	173 B	View DL Edit
if_alg.h	6.58 MB	View DL Edit
kpp.h	9.97 MB	View DL Edit
md5.h	497 B	View DL Edit
nhpoly1305.h	2.18 MB	View DL Edit
null.h	346 B	View DL Edit
padlock.h	438 B	View DL Edit
pcrypt.h	815 B	View DL Edit
pkcs7.h	1.15 MB	View DL Edit
poly1305.h	2.44 MB	View DL Edit
public_key.h	3.63 MB	View DL Edit
rng.h	6.59 MB	View DL Edit
scatterwalk.h	2.94 MB	View DL Edit
serpent.h	696 B	View DL Edit
sha1.h	1.18 MB	View DL Edit
sha1_base.h	2.45 MB	View DL Edit
sha2.h	3.76 MB	View DL Edit
sha3.h	879 B	View DL Edit
sha256_base.h	2.56 MB	View DL Edit
sha512_base.h	3.18 MB	View DL Edit
skcipher.h	19.95 MB	View DL Edit
sm2.h	749 B	View DL Edit
sm3.h	897 B	View DL Edit
sm3_base.h	2.55 MB	View DL Edit
sm4.h	754 B	View DL Edit
streebog.h	949 B	View DL Edit
twofish.h	743 B	View DL Edit
xts.h	978 B	View DL Edit

Edit file: /usr/src/kernels/5.14.0-427.31.1.el9_4.x86_64/include/crypto/if_alg.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * if_alg: User-space algorithm interface
 *
 * Copyright (c) 2010 Herbert Xu <herbert@gondor.apana.org.au>
 */

#ifndef _CRYPTO_IF_ALG_H
#define _CRYPTO_IF_ALG_H

#include <linux/compiler.h>
#include <linux/completion.h>
#include <linux/if_alg.h>
#include <linux/scatterlist.h>
#include <linux/types.h>
#include <linux/atomic.h>
#include <net/sock.h>

#include <crypto/aead.h>
#include <crypto/skcipher.h>

#define ALG_MAX_PAGES			16

struct crypto_async_request;

struct alg_sock {
	/* struct sock must be the first member of struct alg_sock */
	struct sock sk;

struct sock *parent;

atomic_t refcnt;
	atomic_t nokey_refcnt;

const struct af_alg_type *type;
	void *private;
};

struct af_alg_control {
	struct af_alg_iv *iv;
	int op;
	unsigned int aead_assoclen;
};

struct af_alg_type {
	void *(*bind)(const char *name, u32 type, u32 mask);
	void (*release)(void *private);
	int (*setkey)(void *private, const u8 *key, unsigned int keylen);
	int (*setentropy)(void *private, sockptr_t entropy, unsigned int len);
	int (*accept)(void *private, struct sock *sk);
	int (*accept_nokey)(void *private, struct sock *sk);
	int (*setauthsize)(void *private, unsigned int authsize);

struct proto_ops *ops;
	struct proto_ops *ops_nokey;
	struct module *owner;
	char name[14];
};

struct af_alg_sgl {
	struct scatterlist sg[ALG_MAX_PAGES + 1];
	struct page *pages[ALG_MAX_PAGES];
	unsigned int npages;
};

/* TX SGL entry */
struct af_alg_tsgl {
	struct list_head list;
	unsigned int cur;		/* Last processed SG entry */
	struct scatterlist sg[];	/* Array of SGs forming the SGL */
};

#define MAX_SGL_ENTS ((4096 - sizeof(struct af_alg_tsgl)) / \
		      sizeof(struct scatterlist) - 1)

/* RX SGL entry */
struct af_alg_rsgl {
	struct af_alg_sgl sgl;
	struct list_head list;
	size_t sg_num_bytes;		/* Bytes of data in that SGL */
};

/**
 * struct af_alg_async_req - definition of crypto request
 * @iocb:		IOCB for AIO operations
 * @sk:			Socket the request is associated with
 * @first_rsgl:		First RX SG
 * @last_rsgl:		Pointer to last RX SG
 * @rsgl_list:		Track RX SGs
 * @tsgl:		Private, per request TX SGL of buffers to process
 * @tsgl_entries:	Number of entries in priv. TX SGL
 * @outlen:		Number of output bytes generated by crypto op
 * @areqlen:		Length of this data structure
 * @cra_u:		Cipher request
 */
struct af_alg_async_req {
	struct kiocb *iocb;
	struct sock *sk;

struct af_alg_rsgl first_rsgl;
	struct af_alg_rsgl *last_rsgl;
	struct list_head rsgl_list;

struct scatterlist *tsgl;
	unsigned int tsgl_entries;

unsigned int outlen;
	unsigned int areqlen;

union {
		struct aead_request aead_req;
		struct skcipher_request skcipher_req;
	} cra_u;

/* req ctx trails this struct */
};

/**
 * struct af_alg_ctx - definition of the crypto context
 *
 * The crypto context tracks the input data during the lifetime of an AF_ALG
 * socket.
 *
 * @tsgl_list:		Link to TX SGL
 * @iv:			IV for cipher operation
 * @aead_assoclen:	Length of AAD for AEAD cipher operations
 * @completion:		Work queue for synchronous operation
 * @used:		TX bytes sent to kernel. This variable is used to
 *			ensure that user space cannot cause the kernel
 *			to allocate too much memory in sendmsg operation.
 * @rcvused:		Total RX bytes to be filled by kernel. This variable
 *			is used to ensure user space cannot cause the kernel
 *			to allocate too much memory in a recvmsg operation.
 * @more:		More data to be expected from user space?
 * @merge:		Shall new data from user space be merged into existing
 *			SG?
 * @enc:		Cryptographic operation to be performed when
 *			recvmsg is invoked.
 * @init:		True if metadata has been sent.
 * @len:		Length of memory allocated for this data structure.
 */
struct af_alg_ctx {
	struct list_head tsgl_list;

void *iv;
	size_t aead_assoclen;

struct crypto_wait wait;

size_t used;
	atomic_t rcvused;

bool more;
	bool merge;
	bool enc;
	bool init;

unsigned int len;
};

int af_alg_register_type(const struct af_alg_type *type);
int af_alg_unregister_type(const struct af_alg_type *type);

int af_alg_release(struct socket *sock);
void af_alg_release_parent(struct sock *sk);
int af_alg_accept(struct sock *sk, struct socket *newsock, bool kern);

int af_alg_make_sg(struct af_alg_sgl *sgl, struct iov_iter *iter, int len);
void af_alg_free_sg(struct af_alg_sgl *sgl);

static inline struct alg_sock *alg_sk(struct sock *sk)
{
	return (struct alg_sock *)sk;
}

/**
 * Size of available buffer for sending data from user space to kernel.
 *
 * @sk socket of connection to user space
 * @return number of bytes still available
 */
static inline int af_alg_sndbuf(struct sock *sk)
{
	struct alg_sock *ask = alg_sk(sk);
	struct af_alg_ctx *ctx = ask->private;

return max_t(int, max_t(int, sk->sk_sndbuf & PAGE_MASK, PAGE_SIZE) -
			  ctx->used, 0);
}

/**
 * Can the send buffer still be written to?
 *
 * @sk socket of connection to user space
 * @return true => writable, false => not writable
 */
static inline bool af_alg_writable(struct sock *sk)
{
	return PAGE_SIZE <= af_alg_sndbuf(sk);
}

/**
 * Size of available buffer used by kernel for the RX user space operation.
 *
 * @sk socket of connection to user space
 * @return number of bytes still available
 */
static inline int af_alg_rcvbuf(struct sock *sk)
{
	struct alg_sock *ask = alg_sk(sk);
	struct af_alg_ctx *ctx = ask->private;

return max_t(int, max_t(int, sk->sk_rcvbuf & PAGE_MASK, PAGE_SIZE) -
		     atomic_read(&ctx->rcvused), 0);
}

/**
 * Can the RX buffer still be written to?
 *
 * @sk socket of connection to user space
 * @return true => writable, false => not writable
 */
static inline bool af_alg_readable(struct sock *sk)
{
	return PAGE_SIZE <= af_alg_rcvbuf(sk);
}

unsigned int af_alg_count_tsgl(struct sock *sk, size_t bytes, size_t offset);
void af_alg_pull_tsgl(struct sock *sk, size_t used, struct scatterlist *dst,
		      size_t dst_offset);
void af_alg_wmem_wakeup(struct sock *sk);
int af_alg_wait_for_data(struct sock *sk, unsigned flags, unsigned min);
int af_alg_sendmsg(struct socket *sock, struct msghdr *msg, size_t size,
		   unsigned int ivsize);
ssize_t af_alg_sendpage(struct socket *sock, struct page *page,
			int offset, size_t size, int flags);
void af_alg_free_resources(struct af_alg_async_req *areq);
void af_alg_async_cb(struct crypto_async_request *_req, int err);
__poll_t af_alg_poll(struct file *file, struct socket *sock,
			 poll_table *wait);
struct af_alg_async_req *af_alg_alloc_areq(struct sock *sk,
					   unsigned int areqlen);
int af_alg_get_rsgl(struct sock *sk, struct msghdr *msg, int flags,
		    struct af_alg_async_req *areq, size_t maxsize,
		    size_t *outlen);

#endif	/* _CRYPTO_IF_ALG_H */

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