FM / crypto

/usr/src/linux-headers-5.15.0-181/include/crypto/

/usr/src/linux-headers-5.15.0-181/include/crypto

Name	Size	Mode	Actions
internal/	-	0755	rm
acompress.h	9073	0644	edit dl rm
aead.h	18832	0644	edit dl rm
aes.h	2563	0644	edit dl rm
akcipher.h	13232	0644	edit dl rm
algapi.h	7545	0644	edit dl rm
arc4.h	484	0644	edit dl rm
asym_tpm_subtype.h	521	0644	edit dl rm
authenc.h	635	0644	edit dl rm
b128ops.h	2471	0644	edit dl rm
blake2b.h	1637	0644	edit dl rm
blake2s.h	2680	0644	edit dl rm
blowfish.h	415	0644	edit dl rm
cast5.h	590	0644	edit dl rm
cast6.h	607	0644	edit dl rm
cast_common.h	232	0644	edit dl rm
chacha.h	3395	0644	edit dl rm
chacha20poly1305.h	1699	0644	edit dl rm
cryptd.h	2050	0644	edit dl rm
ctr.h	1456	0644	edit dl rm
curve25519.h	2065	0644	edit dl rm
des.h	1724	0644	edit dl rm
dh.h	2574	0644	edit dl rm
drbg.h	9209	0644	edit dl rm
ecc_curve.h	1337	0644	edit dl rm
ecdh.h	2487	0644	edit dl rm
engine.h	4209	0644	edit dl rm
gcm.h	867	0644	edit dl rm
gf128mul.h	9647	0644	edit dl rm
ghash.h	388	0644	edit dl rm
hash.h	34859	0644	edit dl rm
hash_info.h	998	0644	edit dl rm
hmac.h	173	0644	edit dl rm
if_alg.h	6844	0644	edit dl rm
kpp.h	10144	0644	edit dl rm
md5.h	497	0644	edit dl rm
nhpoly1305.h	2236	0644	edit dl rm
null.h	346	0644	edit dl rm
padlock.h	438	0644	edit dl rm
pcrypt.h	815	0644	edit dl rm
pkcs7.h	1181	0644	edit dl rm
poly1305.h	2500	0644	edit dl rm
public_key.h	2440	0644	edit dl rm
rng.h	6748	0644	edit dl rm
scatterwalk.h	3989	0644	edit dl rm
serpent.h	696	0644	edit dl rm
sha1.h	1210	0644	edit dl rm
sha1_base.h	2512	0644	edit dl rm
sha2.h	3849	0644	edit dl rm
sha3.h	879	0644	edit dl rm
sha256_base.h	2621	0644	edit dl rm
sha512_base.h	3255	0644	edit dl rm
skcipher.h	20428	0644	edit dl rm
sm2.h	749	0644	edit dl rm
sm3.h	897	0644	edit dl rm
sm3_base.h	2608	0644	edit dl rm
sm4.h	1144	0644	edit dl rm
streebog.h	949	0644	edit dl rm
twofish.h	743	0644	edit dl rm
xts.h	1125	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/include/crypto/if_alg.h (6844B)

/* 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.
 * @write:		True if we are in the middle of a write.
 * @init:		True if metadata has been sent.
 * @len:		Length of memory allocated for this data structure.
 * @inflight:		Non-zero when AIO requests are in flight.
 */
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:1,
			merge:1,
			enc:1,
			write:1,
			init:1;

unsigned int len;

unsigned int inflight;
};

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);
void af_alg_pull_tsgl(struct sock *sk, size_t used, struct scatterlist *dst);
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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