Release 4.10 drivers/crypto/ixp4xx_crypto.c

Directory: drivers/crypto
/*
 * Intel IXP4xx NPE-C crypto driver
 *
 * Copyright (C) 2008 Christian Hohnstaedt <chohnstaedt@innominate.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License
 * as published by the Free Software Foundation.
 *
 */

#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/dmapool.h>
#include <linux/crypto.h>
#include <linux/kernel.h>
#include <linux/rtnetlink.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/gfp.h>
#include <linux/module.h>

#include <crypto/ctr.h>
#include <crypto/des.h>
#include <crypto/aes.h>
#include <crypto/sha.h>
#include <crypto/algapi.h>
#include <crypto/internal/aead.h>
#include <crypto/authenc.h>
#include <crypto/scatterwalk.h>

#include <mach/npe.h>
#include <mach/qmgr.h>


#define MAX_KEYLEN 32

/* hash: cfgword + 2 * digestlen; crypt: keylen + cfgword */

#define NPE_CTX_LEN 80

#define AES_BLOCK128 16


#define NPE_OP_HASH_VERIFY   0x01

#define NPE_OP_CCM_ENABLE    0x04

#define NPE_OP_CRYPT_ENABLE  0x08

#define NPE_OP_HASH_ENABLE   0x10

#define NPE_OP_NOT_IN_PLACE  0x20

#define NPE_OP_HMAC_DISABLE  0x40

#define NPE_OP_CRYPT_ENCRYPT 0x80


#define NPE_OP_CCM_GEN_MIC   0xcc

#define NPE_OP_HASH_GEN_ICV  0x50

#define NPE_OP_ENC_GEN_KEY   0xc9


#define MOD_ECB     0x0000

#define MOD_CTR     0x1000

#define MOD_CBC_ENC 0x2000

#define MOD_CBC_DEC 0x3000

#define MOD_CCM_ENC 0x4000

#define MOD_CCM_DEC 0x5000


#define KEYLEN_128  4

#define KEYLEN_192  6

#define KEYLEN_256  8


#define CIPH_DECR   0x0000

#define CIPH_ENCR   0x0400


#define MOD_DES     0x0000

#define MOD_TDEA2   0x0100

#define MOD_3DES   0x0200

#define MOD_AES     0x0800

#define MOD_AES128  (0x0800 | KEYLEN_128)

#define MOD_AES192  (0x0900 | KEYLEN_192)

#define MOD_AES256  (0x0a00 | KEYLEN_256)


#define MAX_IVLEN   16

#define NPE_ID      2  
/* NPE C */

#define NPE_QLEN    16
/* Space for registering when the first
 * NPE_QLEN crypt_ctl are busy */

#define NPE_QLEN_TOTAL 64


#define SEND_QID    29

#define RECV_QID    30


#define CTL_FLAG_UNUSED		0x0000

#define CTL_FLAG_USED		0x1000

#define CTL_FLAG_PERFORM_ABLK	0x0001

#define CTL_FLAG_GEN_ICV	0x0002

#define CTL_FLAG_GEN_REVAES	0x0004

#define CTL_FLAG_PERFORM_AEAD	0x0008

#define CTL_FLAG_MASK		0x000f


#define HMAC_IPAD_VALUE   0x36

#define HMAC_OPAD_VALUE   0x5C

#define HMAC_PAD_BLOCKLEN SHA1_BLOCK_SIZE


#define MD5_DIGEST_SIZE   16


struct buffer_desc {
	
u32 phys_next;
#ifdef __ARMEB__
	
u16 buf_len;
	
u16 pkt_len;
#else
	
u16 pkt_len;
	
u16 buf_len;
#endif
	
u32 phys_addr;
	
u32 __reserved[4];
	
struct buffer_desc *next;
	
enum dma_data_direction dir;
};


struct crypt_ctl {
#ifdef __ARMEB__
	
u8 mode;		/* NPE_OP_*  operation mode */
	
u8 init_len;
	
u16 reserved;
#else
	u16 reserved;
	u8 init_len;
	u8 mode;		/* NPE_OP_*  operation mode */
#endif
	
u8 iv[MAX_IVLEN];	/* IV for CBC mode or CTR IV for CTR mode */
	
u32 icv_rev_aes;	/* icv or rev aes */
	
u32 src_buf;
	
u32 dst_buf;
#ifdef __ARMEB__
	
u16 auth_offs;		/* Authentication start offset */
	
u16 auth_len;		/* Authentication data length */
	
u16 crypt_offs;		/* Cryption start offset */
	
u16 crypt_len;		/* Cryption data length */
#else
	
u16 auth_len;		/* Authentication data length */
	
u16 auth_offs;		/* Authentication start offset */
	
u16 crypt_len;		/* Cryption data length */
	
u16 crypt_offs;		/* Cryption start offset */
#endif
	
u32 aadAddr;		/* Additional Auth Data Addr for CCM mode */
	
u32 crypto_ctx;		/* NPE Crypto Param structure address */

	/* Used by Host: 4*4 bytes*/
	
unsigned ctl_flags;
	union {
		
struct ablkcipher_request *ablk_req;
		
struct aead_request *aead_req;
		
struct crypto_tfm *tfm;
	} 
data;
	
struct buffer_desc *regist_buf;
	
u8 *regist_ptr;
};


struct ablk_ctx {
	
struct buffer_desc *src;
	
struct buffer_desc *dst;
};


struct aead_ctx {
	
struct buffer_desc *src;
	
struct buffer_desc *dst;
	
struct scatterlist ivlist;
	/* used when the hmac is not on one sg entry */
	
u8 *hmac_virt;
	
int encrypt;
};


struct ix_hash_algo {
	
u32 cfgword;
	
unsigned char *icv;
};


struct ix_sa_dir {
	
unsigned char *npe_ctx;
	
dma_addr_t npe_ctx_phys;
	
int npe_ctx_idx;
	
u8 npe_mode;
};


struct ixp_ctx {
	
struct ix_sa_dir encrypt;
	
struct ix_sa_dir decrypt;
	
int authkey_len;
	
u8 authkey[MAX_KEYLEN];
	
int enckey_len;
	
u8 enckey[MAX_KEYLEN];
	
u8 salt[MAX_IVLEN];
	
u8 nonce[CTR_RFC3686_NONCE_SIZE];
	
unsigned salted;
	
atomic_t configuring;
	
struct completion completion;
};


struct ixp_alg {
	
struct crypto_alg crypto;
	
const struct ix_hash_algo *hash;
	
u32 cfg_enc;
	
u32 cfg_dec;

	
int registered;
};


struct ixp_aead_alg {
	
struct aead_alg crypto;
	
const struct ix_hash_algo *hash;
	
u32 cfg_enc;
	
u32 cfg_dec;

	
int registered;
};


static const struct ix_hash_algo hash_alg_md5 = {
	.cfgword	= 0xAA010004,
	.icv		= "\x01\x23\x45\x67\x89\xAB\xCD\xEF"
			  "\xFE\xDC\xBA\x98\x76\x54\x32\x10",
};

static const struct ix_hash_algo hash_alg_sha1 = {
	.cfgword	= 0x00000005,
	.icv		= "\x67\x45\x23\x01\xEF\xCD\xAB\x89\x98\xBA"
			  "\xDC\xFE\x10\x32\x54\x76\xC3\xD2\xE1\xF0",
};


static struct npe *npe_c;

static struct dma_pool *buffer_pool = NULL;

static struct dma_pool *ctx_pool = NULL;


static struct crypt_ctl *crypt_virt = NULL;

static dma_addr_t crypt_phys;


static int support_aes = 1;


#define DRIVER_NAME "ixp4xx_crypto"


static struct platform_device *pdev;



static inline dma_addr_t crypt_virt2phys(struct crypt_ctl *virt)
{
	return crypt_phys + (virt - crypt_virt) * sizeof(struct crypt_ctl);
}

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static inline struct crypt_ctl *crypt_phys2virt(dma_addr_t phys)
{
	return crypt_virt + (phys - crypt_phys) / sizeof(struct crypt_ctl);
}

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static inline u32 cipher_cfg_enc(struct crypto_tfm *tfm)
{
	return container_of(tfm->__crt_alg, struct ixp_alg,crypto)->cfg_enc;
}

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Total 27 100.00% 1 100.00%



static inline u32 cipher_cfg_dec(struct crypto_tfm *tfm)
{
	return container_of(tfm->__crt_alg, struct ixp_alg,crypto)->cfg_dec;
}

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static inline const struct ix_hash_algo *ix_hash(struct crypto_tfm *tfm)
{
	return container_of(tfm->__crt_alg, struct ixp_alg, crypto)->hash;
}

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static int setup_crypt_desc(void)
{
	struct device *dev = &pdev->dev;
	BUILD_BUG_ON(sizeof(struct crypt_ctl) != 64);
	crypt_virt = dma_alloc_coherent(dev,
			NPE_QLEN * sizeof(struct crypt_ctl),
			&crypt_phys, GFP_ATOMIC);
	if (!crypt_virt)
		return -ENOMEM;
	memset(crypt_virt, 0, NPE_QLEN * sizeof(struct crypt_ctl));
	return 0;
}

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russell king russell king 10 13.16% 1 33.33%
julia lawall julia lawall 1 1.32% 1 33.33%
Total 76 100.00% 3 100.00%


static spinlock_t desc_lock;


static struct crypt_ctl *get_crypt_desc(void)
{
	int i;
	static int idx = 0;
	unsigned long flags;

	spin_lock_irqsave(&desc_lock, flags);

	if (unlikely(!crypt_virt))
		setup_crypt_desc();
	if (unlikely(!crypt_virt)) {
		spin_unlock_irqrestore(&desc_lock, flags);
		return NULL;
	}
	i = idx;
	if (crypt_virt[i].ctl_flags == CTL_FLAG_UNUSED) {
		if (++idx >= NPE_QLEN)
			idx = 0;
		crypt_virt[i].ctl_flags = CTL_FLAG_USED;
		spin_unlock_irqrestore(&desc_lock, flags);
		return crypt_virt +i;
	} else {
		spin_unlock_irqrestore(&desc_lock, flags);
		return NULL;
	}
}

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static spinlock_t emerg_lock;


static struct crypt_ctl *get_crypt_desc_emerg(void)
{
	int i;
	static int idx = NPE_QLEN;
	struct crypt_ctl *desc;
	unsigned long flags;

	desc = get_crypt_desc();
	if (desc)
		return desc;
	if (unlikely(!crypt_virt))
		return NULL;

	spin_lock_irqsave(&emerg_lock, flags);
	i = idx;
	if (crypt_virt[i].ctl_flags == CTL_FLAG_UNUSED) {
		if (++idx >= NPE_QLEN_TOTAL)
			idx = NPE_QLEN;
		crypt_virt[i].ctl_flags = CTL_FLAG_USED;
		spin_unlock_irqrestore(&emerg_lock, flags);
		return crypt_virt +i;
	} else {
		spin_unlock_irqrestore(&emerg_lock, flags);
		return NULL;
	}
}

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Total 123 100.00% 1 100.00%



static void free_buf_chain(struct device *dev, struct buffer_desc *buf,u32 phys)
{
	while (buf) {
		struct buffer_desc *buf1;
		u32 phys1;

		buf1 = buf->next;
		phys1 = buf->phys_next;
		dma_unmap_single(dev, buf->phys_next, buf->buf_len, buf->dir);
		dma_pool_free(buffer_pool, buf, phys);
		buf = buf1;
		phys = phys1;
	}
}

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static struct tasklet_struct crypto_done_tasklet;



static void finish_scattered_hmac(struct crypt_ctl *crypt)
{
	struct aead_request *req = crypt->data.aead_req;
	struct aead_ctx *req_ctx = aead_request_ctx(req);
	struct crypto_aead *tfm = crypto_aead_reqtfm(req);
	int authsize = crypto_aead_authsize(tfm);
	int decryptlen = req->assoclen + req->cryptlen - authsize;

	if (req_ctx->encrypt) {
		scatterwalk_map_and_copy(req_ctx->hmac_virt,
			req->dst, decryptlen, authsize, 1);
	}
	dma_pool_free(buffer_pool, req_ctx->hmac_virt, crypt->icv_rev_aes);
}

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herbert xu herbert xu 5 4.95% 1 50.00%
Total 101 100.00% 2 100.00%



static void one_packet(dma_addr_t phys)
{
	struct device *dev = &pdev->dev;
	struct crypt_ctl *crypt;
	struct ixp_ctx *ctx;
	int failed;

	failed = phys & 0x1 ? -EBADMSG : 0;
	phys &= ~0x3;
	crypt = crypt_phys2virt(phys);

	switch (crypt->ctl_flags & CTL_FLAG_MASK) {
	case CTL_FLAG_PERFORM_AEAD: {
		struct aead_request *req = crypt->data.aead_req;
		struct aead_ctx *req_ctx = aead_request_ctx(req);

		free_buf_chain(dev, req_ctx->src, crypt->src_buf);
		free_buf_chain(dev, req_ctx->dst, crypt->dst_buf);
		if (req_ctx->hmac_virt) {
			finish_scattered_hmac(crypt);
		}
		req->base.complete(&req->base, failed);
		break;
	}
	case CTL_FLAG_PERFORM_ABLK: {
		struct ablkcipher_request *req = crypt->data.ablk_req;
		struct ablk_ctx *req_ctx = ablkcipher_request_ctx(req);

		if (req_ctx->dst) {
			free_buf_chain(dev, req_ctx->dst, crypt->dst_buf);
		}
		free_buf_chain(dev, req_ctx->src, crypt->src_buf);
		req->base.complete(&req->base, failed);
		break;
	}
	case CTL_FLAG_GEN_ICV:
		ctx = crypto_tfm_ctx(crypt->data.tfm);
		dma_pool_free(ctx_pool, crypt->regist_ptr,
				crypt->regist_buf->phys_addr);
		dma_pool_free(buffer_pool, crypt->regist_buf, crypt->src_buf);
		if (atomic_dec_and_test(&ctx->configuring))
			complete(&ctx->completion);
		break;
	case CTL_FLAG_GEN_REVAES:
		ctx = crypto_tfm_ctx(crypt->data.tfm);
		*(u32*)ctx->decrypt.npe_ctx &= cpu_to_be32(~CIPH_ENCR);
		if (atomic_dec_and_test(&ctx->configuring))
			complete(&ctx->completion);
		break;
	default:
		BUG();
	}
	crypt->ctl_flags = CTL_FLAG_UNUSED;
}

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christian hohnstaedt christian hohnstaedt 317 92.96% 2 50.00%
herbert xu herbert xu 14 4.11% 1 25.00%
russell king russell king 10 2.93% 1 25.00%
Total 341 100.00% 4 100.00%



static void irqhandler(void *_unused)
{
	tasklet_schedule(&crypto_done_tasklet);
}

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Total 16 100.00% 1 100.00%



static void crypto_done_action(unsigned long arg)
{
	int i;

	for(i=0; i<4; i++) {
		dma_addr_t phys = qmgr_get_entry(RECV_QID);
		if (!phys)
			return;
		one_packet(phys);
	}
	tasklet_schedule(&crypto_done_tasklet);
}

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static int init_ixp_crypto(struct device *dev)
{
	int ret = -ENODEV;
	u32 msg[2] = { 0, 0 };

	if (! ( ~(*IXP4XX_EXP_CFG2) & (IXP4XX_FEATURE_HASH |
				IXP4XX_FEATURE_AES | IXP4XX_FEATURE_DES))) {
		printk(KERN_ERR "ixp_crypto: No HW crypto available\n");
		return ret;
	}
	npe_c = npe_request(NPE_ID);
	if (!npe_c)
		return ret;

	if (!npe_running(npe_c)) {
		ret = npe_load_firmware(npe_c, npe_name(npe_c), dev);
		if (ret)
			goto npe_release;
		if (npe_recv_message(npe_c, msg, "STATUS_MSG"))
			goto npe_error;
	} else {
		if (npe_send_message(npe_c, msg, "STATUS_MSG"))
			goto npe_error;

		if (npe_recv_message(npe_c, msg, "STATUS_MSG"))
			goto npe_error;
	}

	switch ((msg[1]>>16) & 0xff) {
	case 3:
		printk(KERN_WARNING "Firmware of %s lacks AES support\n",
				npe_name(npe_c));
		support_aes = 0;
		break;
	case 4:
	case 5:
		support_aes = 1;
		break;
	default:
		printk(KERN_ERR "Firmware of %s lacks crypto support\n",
			npe_name(npe_c));
		ret = -ENODEV;
		goto npe_release;
	}
	/* buffer_pool will also be used to sometimes store the hmac,
         * so assure it is large enough
         */
	BUILD_BUG_ON(SHA1_DIGEST_SIZE > sizeof(struct buffer_desc));
	buffer_pool = dma_pool_create("buffer", dev,
			sizeof(struct buffer_desc), 32, 0);
	ret = -ENOMEM;
	if (!buffer_pool) {
		goto err;
	}
	ctx_pool = dma_pool_create("context", dev,
			NPE_CTX_LEN, 16, 0);
	if (!ctx_pool) {
		goto err;
	}
	ret = qmgr_request_queue(SEND_QID, NPE_QLEN_TOTAL, 0, 0,
				 "ixp_crypto:out", NULL);
	if (ret)
		goto err;
	ret = qmgr_request_queue(RECV_QID, NPE_QLEN, 0, 0,
				 "ixp_crypto:in", NULL);
	if (ret) {
		qmgr_release_queue(SEND_QID);
		goto err;
	}
	qmgr_set_irq(RECV_QID, QUEUE_IRQ_SRC_NOT_EMPTY, irqhandler, NULL);
	tasklet_init(&crypto_done_tasklet, crypto_done_action, 0);

	qmgr_enable_irq(RECV_QID);
	return 0;

npe_error:
	printk(KERN_ERR "%s not responding\n", npe_name(npe_c));
	ret = -EIO;
err:
	dma_pool_destroy(ctx_pool);
	dma_pool_destroy(buffer_pool);
npe_release:
	npe_release(npe_c);
	return ret;
}

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christian hohnstaedt christian hohnstaedt 387 94.39% 2 40.00%
quentin lambert quentin lambert 11 2.68% 1 20.00%
krzysztof halasa krzysztof halasa 8 1.95% 1 20.00%
russell king russell king 4 0.98% 1 20.00%
Total 410 100.00% 5 100.00%



static void release_ixp_crypto(struct device *dev)
{
	qmgr_disable_irq(RECV_QID);
	tasklet_kill(&crypto_done_tasklet);

	qmgr_release_queue(SEND_QID);
	qmgr_release_queue(RECV_QID);

	dma_pool_destroy(ctx_pool);
	dma_pool_destroy(buffer_pool);

	npe_release(npe_c);

	if (crypt_virt) {
		dma_free_coherent(dev,
			NPE_QLEN_TOTAL * sizeof( struct crypt_ctl),
			crypt_virt, crypt_phys);
	}
	return;
}

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christian hohnstaedt christian hohnstaedt 67 94.37% 1 50.00%
russell king russell king 4 5.63% 1 50.00%
Total 71 100.00% 2 100.00%



static void reset_sa_dir(struct ix_sa_dir *dir)
{
	memset(dir->npe_ctx, 0, NPE_CTX_LEN);
	dir->npe_ctx_idx = 0;
	dir->npe_mode = 0;
}

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static int init_sa_dir(struct ix_sa_dir *dir)
{
	dir->npe_ctx = dma_pool_alloc(ctx_pool, GFP_KERNEL, &dir->npe_ctx_phys);
	if (!dir->npe_ctx) {
		return -ENOMEM;
	}
	reset_sa_dir(dir);
	return 0;
}

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Total 48 100.00% 1 100.00%



static void free_sa_dir(struct ix_sa_dir *dir)
{
	memset(dir->npe_ctx, 0, NPE_CTX_LEN);
	dma_pool_free(ctx_pool, dir->npe_ctx, dir->npe_ctx_phys);
}

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static int init_tfm(struct crypto_tfm *tfm)
{
	struct ixp_ctx *ctx = crypto_tfm_ctx(tfm);
	int ret;

	atomic_set(&ctx->configuring, 0);
	ret = init_sa_dir(&ctx->encrypt);
	if (ret)
		return ret;
	ret = init_sa_dir(&ctx->decrypt);
	if (ret) {
		free_sa_dir(&ctx->encrypt);
	}
	return ret;
}

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Total 78 100.00% 1 100.00%



static int init_tfm_ablk(struct crypto_tfm *tfm)
{
	tfm->crt_ablkcipher.reqsize = sizeof(struct ablk_ctx);
	return init_tfm(tfm);
}

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static int init_tfm_aead(struct crypto_aead *tfm)
{
	crypto_aead_set_reqsize(tfm, sizeof(struct aead_ctx));
	return init_tfm(crypto_aead_tfm(tfm));
}

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christian hohnstaedt christian hohnstaedt 23 74.19% 1 33.33%
herbert xu herbert xu 8 25.81% 2 66.67%
Total 31 100.00% 3 100.00%



static void exit_tfm(struct crypto_tfm *tfm)
{
	struct ixp_ctx *ctx = crypto_tfm_ctx(tfm);
	free_sa_dir(&ctx->encrypt);
	free_sa_dir(&ctx->decrypt);
}

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static void exit_tfm_aead(struct crypto_aead *tfm)
{
	exit_tfm(crypto_aead_tfm(tfm));
}

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static int register_chain_var(struct crypto_tfm *tfm, u8 xpad, u32 target,
		int init_len, u32 ctx_addr, const u8 *key, int key_len)
{
	struct ixp_ctx *ctx = crypto_tfm_ctx(tfm);
	struct crypt_ctl *crypt;
	struct buffer_desc *buf;
	int i;
	u8 *pad;
	u32 pad_phys, buf_phys;

	BUILD_BUG_ON(NPE_CTX_LEN < HMAC_PAD_BLOCKLEN);
	pad = dma_pool_alloc(ctx_pool, GFP_KERNEL, &pad_phys);
	if (!pad)
		return -ENOMEM;
	buf = dma_pool_alloc(buffer_pool, GFP_KERNEL, &buf_phys);
	if (!buf) {
		dma_pool_free(ctx_pool, pad, pad_phys);
		return -ENOMEM;
	}
	crypt = get_crypt_desc_emerg();
	if (!crypt) {
		dma_pool_free(ctx_pool, pad, pad_phys);
		dma_pool_free(buffer_pool, buf, buf_phys);
		return -EAGAIN;
	}

	memcpy(pad, key, key_len);
	memset(pad + key_len, 0, HMAC_PAD_BLOCKLEN - key_len);
	for (i = 0; i < HMAC_PAD_BLOCKLEN; i++) {
		pad[i] ^= xpad;
	}

	crypt->data.tfm = tfm;
	crypt->regist_ptr = pad;
	crypt->regist_buf = buf;

	crypt->auth_offs = 0;
	crypt->auth_len = HMAC_PAD_BLOCKLEN;
	crypt->crypto_ctx = ctx_addr;
	crypt->src_buf = buf_phys;
	crypt->icv_rev_aes = target;
	crypt->mode = NPE_OP_HASH_GEN_ICV;
	crypt->init_len = init_len;
	crypt->ctl_flags |= CTL_FLAG_GEN_ICV;

	buf->next = 0;
	buf->buf_len = HMAC_PAD_BLOCKLEN;
	buf->pkt_len = 0;
	buf->phys_addr = pad_phys;

	atomic_inc(&ctx->configuring);
	qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt));
	BUG_ON(qmgr_stat_overflow(SEND_QID));
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 322 100.00% 1 100.00%
Total 322 100.00% 1 100.00%



static int setup_auth(struct crypto_tfm *tfm, int encrypt, unsigned authsize,
		const u8 *key, int key_len, unsigned digest_len)
{
	u32 itarget, otarget, npe_ctx_addr;
	unsigned char *cinfo;
	int init_len, ret = 0;
	u32 cfgword;
	struct ix_sa_dir *dir;
	struct ixp_ctx *ctx = crypto_tfm_ctx(tfm);
	const struct ix_hash_algo *algo;

	dir = encrypt ? &ctx->encrypt : &ctx->decrypt;
	cinfo = dir->npe_ctx + dir->npe_ctx_idx;
	algo = ix_hash(tfm);

	/* write cfg word to cryptinfo */
	cfgword = algo->cfgword | ( authsize << 6); /* (authsize/4) << 8 */
#ifndef __ARMEB__
	cfgword ^= 0xAA000000; /* change the "byte swap" flags */
#endif
	*(u32*)cinfo = cpu_to_be32(cfgword);
	cinfo += sizeof(cfgword);

	/* write ICV to cryptinfo */
	memcpy(cinfo, algo->icv, digest_len);
	cinfo += digest_len;

	itarget = dir->npe_ctx_phys + dir->npe_ctx_idx
				+ sizeof(algo->cfgword);
	otarget = itarget + digest_len;
	init_len = cinfo - (dir->npe_ctx + dir->npe_ctx_idx);
	npe_ctx_addr = dir->npe_ctx_phys + dir->npe_ctx_idx;

	dir->npe_ctx_idx += init_len;
	dir->npe_mode |= NPE_OP_HASH_ENABLE;

	if (!encrypt)
		dir->npe_mode |= NPE_OP_HASH_VERIFY;

	ret = register_chain_var(tfm, HMAC_OPAD_VALUE, otarget,
			init_len, npe_ctx_addr, key, key_len);
	if (ret)
		return ret;
	return register_chain_var(tfm, HMAC_IPAD_VALUE, itarget,
			init_len, npe_ctx_addr, key, key_len);
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 265 96.36% 1 50.00%
krzysztof halasa krzysztof halasa 10 3.64% 1 50.00%
Total 275 100.00% 2 100.00%



static int gen_rev_aes_key(struct crypto_tfm *tfm)
{
	struct crypt_ctl *crypt;
	struct ixp_ctx *ctx = crypto_tfm_ctx(tfm);
	struct ix_sa_dir *dir = &ctx->decrypt;

	crypt = get_crypt_desc_emerg();
	if (!crypt) {
		return -EAGAIN;
	}
	*(u32*)dir->npe_ctx |= cpu_to_be32(CIPH_ENCR);

	crypt->data.tfm = tfm;
	crypt->crypt_offs = 0;
	crypt->crypt_len = AES_BLOCK128;
	crypt->src_buf = 0;
	crypt->crypto_ctx = dir->npe_ctx_phys;
	crypt->icv_rev_aes = dir->npe_ctx_phys + sizeof(u32);
	crypt->mode = NPE_OP_ENC_GEN_KEY;
	crypt->init_len = dir->npe_ctx_idx;
	crypt->ctl_flags |= CTL_FLAG_GEN_REVAES;

	atomic_inc(&ctx->configuring);
	qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt));
	BUG_ON(qmgr_stat_overflow(SEND_QID));
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 162 100.00% 1 100.00%
Total 162 100.00% 1 100.00%



static int setup_cipher(struct crypto_tfm *tfm, int encrypt,
		const u8 *key, int key_len)
{
	u8 *cinfo;
	u32 cipher_cfg;
	u32 keylen_cfg = 0;
	struct ix_sa_dir *dir;
	struct ixp_ctx *ctx = crypto_tfm_ctx(tfm);
	u32 *flags = &tfm->crt_flags;

	dir = encrypt ? &ctx->encrypt : &ctx->decrypt;
	cinfo = dir->npe_ctx;

	if (encrypt) {
		cipher_cfg = cipher_cfg_enc(tfm);
		dir->npe_mode |= NPE_OP_CRYPT_ENCRYPT;
	} else {
		cipher_cfg = cipher_cfg_dec(tfm);
	}
	if (cipher_cfg & MOD_AES) {
		switch (key_len) {
		case 16: keylen_cfg = MOD_AES128; break;
		case 24: keylen_cfg = MOD_AES192; break;
		case 32: keylen_cfg = MOD_AES256; break;
		default:
			*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
			return -EINVAL;
		}
		cipher_cfg |= keylen_cfg;
	} else if (cipher_cfg & MOD_3DES) {
		const u32 *K = (const u32 *)key;
		if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
			     !((K[2] ^ K[4]) | (K[3] ^ K[5]))))
		{
			*flags |= CRYPTO_TFM_RES_BAD_KEY_SCHED;
			return -EINVAL;
		}
	} else {
		u32 tmp[DES_EXPKEY_WORDS];
		if (des_ekey(tmp, key) == 0) {
			*flags |= CRYPTO_TFM_RES_WEAK_KEY;
		}
	}
	/* write cfg word to cryptinfo */
	*(u32*)cinfo = cpu_to_be32(cipher_cfg);
	cinfo += sizeof(cipher_cfg);

	/* write cipher key to cryptinfo */
	memcpy(cinfo, key, key_len);
	/* NPE wants keylen set to DES3_EDE_KEY_SIZE even for single DES */
	if (key_len < DES3_EDE_KEY_SIZE && !(cipher_cfg & MOD_AES)) {
		memset(cinfo + key_len, 0, DES3_EDE_KEY_SIZE -key_len);
		key_len = DES3_EDE_KEY_SIZE;
	}
	dir->npe_ctx_idx = sizeof(cipher_cfg) + key_len;
	dir->npe_mode |= NPE_OP_CRYPT_ENABLE;
	if ((cipher_cfg & MOD_AES) && !encrypt) {
		return gen_rev_aes_key(tfm);
	}
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 379 100.00% 1 100.00%
Total 379 100.00% 1 100.00%



static struct buffer_desc *chainup_buffers(struct device *dev,
		struct scatterlist *sg,	unsigned nbytes,
		struct buffer_desc *buf, gfp_t flags,
		enum dma_data_direction dir)
{
	for (; nbytes > 0; sg = sg_next(sg)) {
		unsigned len = min(nbytes, sg->length);
		struct buffer_desc *next_buf;
		u32 next_buf_phys;
		void *ptr;

		nbytes -= len;
		ptr = page_address(sg_page(sg)) + sg->offset;
		next_buf = dma_pool_alloc(buffer_pool, flags, &next_buf_phys);
		if (!next_buf) {
			buf = NULL;
			break;
		}
		sg_dma_address(sg) = dma_map_single(dev, ptr, len, dir);
		buf->next = next_buf;
		buf->phys_next = next_buf_phys;
		buf = next_buf;

		buf->phys_addr = sg_dma_address(sg);
		buf->buf_len = len;
		buf->dir = dir;
	}
	buf->next = NULL;
	buf->phys_next = 0;
	return buf;
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 182 99.45% 2 66.67%
cristian stoica cristian stoica 1 0.55% 1 33.33%
Total 183 100.00% 3 100.00%



static int ablk_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
			unsigned int key_len)
{
	struct ixp_ctx *ctx = crypto_ablkcipher_ctx(tfm);
	u32 *flags = &tfm->base.crt_flags;
	int ret;

	init_completion(&ctx->completion);
	atomic_inc(&ctx->configuring);

	reset_sa_dir(&ctx->encrypt);
	reset_sa_dir(&ctx->decrypt);

	ctx->encrypt.npe_mode = NPE_OP_HMAC_DISABLE;
	ctx->decrypt.npe_mode = NPE_OP_HMAC_DISABLE;

	ret = setup_cipher(&tfm->base, 0, key, key_len);
	if (ret)
		goto out;
	ret = setup_cipher(&tfm->base, 1, key, key_len);
	if (ret)
		goto out;

	if (*flags & CRYPTO_TFM_RES_WEAK_KEY) {
		if (*flags & CRYPTO_TFM_REQ_WEAK_KEY) {
			ret = -EINVAL;
		} else {
			*flags &= ~CRYPTO_TFM_RES_WEAK_KEY;
		}
	}
out:
	if (!atomic_dec_and_test(&ctx->configuring))
		wait_for_completion(&ctx->completion);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 194 100.00% 1 100.00%
Total 194 100.00% 1 100.00%



static int ablk_rfc3686_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
		unsigned int key_len)
{
	struct ixp_ctx *ctx = crypto_ablkcipher_ctx(tfm);

	/* the nonce is stored in bytes at end of key */
	if (key_len < CTR_RFC3686_NONCE_SIZE)
		return -EINVAL;

	memcpy(ctx->nonce, key + (key_len - CTR_RFC3686_NONCE_SIZE),
			CTR_RFC3686_NONCE_SIZE);

	key_len -= CTR_RFC3686_NONCE_SIZE;
	return ablk_setkey(tfm, key, key_len);
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 72 100.00% 1 100.00%
Total 72 100.00% 1 100.00%



static int ablk_perform(struct ablkcipher_request *req, int encrypt)
{
	struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
	struct ixp_ctx *ctx = crypto_ablkcipher_ctx(tfm);
	unsigned ivsize = crypto_ablkcipher_ivsize(tfm);
	struct ix_sa_dir *dir;
	struct crypt_ctl *crypt;
	unsigned int nbytes = req->nbytes;
	enum dma_data_direction src_direction = DMA_BIDIRECTIONAL;
	struct ablk_ctx *req_ctx = ablkcipher_request_ctx(req);
	struct buffer_desc src_hook;
	struct device *dev = &pdev->dev;
	gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
				GFP_KERNEL : GFP_ATOMIC;

	if (qmgr_stat_full(SEND_QID))
		return -EAGAIN;
	if (atomic_read(&ctx->configuring))
		return -EAGAIN;

	dir = encrypt ? &ctx->encrypt : &ctx->decrypt;

	crypt = get_crypt_desc();
	if (!crypt)
		return -ENOMEM;

	crypt->data.ablk_req = req;
	crypt->crypto_ctx = dir->npe_ctx_phys;
	crypt->mode = dir->npe_mode;
	crypt->init_len = dir->npe_ctx_idx;

	crypt->crypt_offs = 0;
	crypt->crypt_len = nbytes;

	BUG_ON(ivsize && !req->info);
	memcpy(crypt->iv, req->info, ivsize);
	if (req->src != req->dst) {
		struct buffer_desc dst_hook;
		crypt->mode |= NPE_OP_NOT_IN_PLACE;
		/* This was never tested by Intel
                 * for more than one dst buffer, I think. */
		req_ctx->dst = NULL;
		if (!chainup_buffers(dev, req->dst, nbytes, &dst_hook,
					flags, DMA_FROM_DEVICE))
			goto free_buf_dest;
		src_direction = DMA_TO_DEVICE;
		req_ctx->dst = dst_hook.next;
		crypt->dst_buf = dst_hook.phys_next;
	} else {
		req_ctx->dst = NULL;
	}
	req_ctx->src = NULL;
	if (!chainup_buffers(dev, req->src, nbytes, &src_hook,
				flags, src_direction))
		goto free_buf_src;

	req_ctx->src = src_hook.next;
	crypt->src_buf = src_hook.phys_next;
	crypt->ctl_flags |= CTL_FLAG_PERFORM_ABLK;
	qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt));
	BUG_ON(qmgr_stat_overflow(SEND_QID));
	return -EINPROGRESS;

free_buf_src:
	free_buf_chain(dev, req_ctx->src, crypt->src_buf);
free_buf_dest:
	if (req->src != req->dst) {
		free_buf_chain(dev, req_ctx->dst, crypt->dst_buf);
	}
	crypt->ctl_flags = CTL_FLAG_UNUSED;
	return -ENOMEM;
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 423 97.69% 2 66.67%
russell king russell king 10 2.31% 1 33.33%
Total 433 100.00% 3 100.00%



static int ablk_encrypt(struct ablkcipher_request *req)
{
	return ablk_perform(req, 1);
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 19 100.00% 1 100.00%
Total 19 100.00% 1 100.00%



static int ablk_decrypt(struct ablkcipher_request *req)
{
	return ablk_perform(req, 0);
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 19 100.00% 1 100.00%
Total 19 100.00% 1 100.00%



static int ablk_rfc3686_crypt(struct ablkcipher_request *req)
{
	struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
	struct ixp_ctx *ctx = crypto_ablkcipher_ctx(tfm);
	u8 iv[CTR_RFC3686_BLOCK_SIZE];
	u8 *info = req->info;
	int ret;

	/* set up counter block */
        memcpy(iv, ctx->nonce, CTR_RFC3686_NONCE_SIZE);
	memcpy(iv + CTR_RFC3686_NONCE_SIZE, info, CTR_RFC3686_IV_SIZE);

	/* initialize counter portion of counter block */
	*(__be32 *)(iv + CTR_RFC3686_NONCE_SIZE + CTR_RFC3686_IV_SIZE) =
		cpu_to_be32(1);

	req->info = iv;
	ret = ablk_perform(req, 1);
	req->info = info;
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 114 100.00% 1 100.00%
Total 114 100.00% 1 100.00%



static int aead_perform(struct aead_request *req, int encrypt,
		int cryptoffset, int eff_cryptlen, u8 *iv)
{
	struct crypto_aead *tfm = crypto_aead_reqtfm(req);
	struct ixp_ctx *ctx = crypto_aead_ctx(tfm);
	unsigned ivsize = crypto_aead_ivsize(tfm);
	unsigned authsize = crypto_aead_authsize(tfm);
	struct ix_sa_dir *dir;
	struct crypt_ctl *crypt;
	unsigned int cryptlen;
	struct buffer_desc *buf, src_hook;
	struct aead_ctx *req_ctx = aead_request_ctx(req);
	struct device *dev = &pdev->dev;
	gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
				GFP_KERNEL : GFP_ATOMIC;
	enum dma_data_direction src_direction = DMA_BIDIRECTIONAL;
	unsigned int lastlen;

	if (qmgr_stat_full(SEND_QID))
		return -EAGAIN;
	if (atomic_read(&ctx->configuring))
		return -EAGAIN;

	if (encrypt) {
		dir = &ctx->encrypt;
		cryptlen = req->cryptlen;
	} else {
		dir = &ctx->decrypt;
		/* req->cryptlen includes the authsize when decrypting */
		cryptlen = req->cryptlen -authsize;
		eff_cryptlen -= authsize;
	}
	crypt = get_crypt_desc();
	if (!crypt)
		return -ENOMEM;

	crypt->data.aead_req = req;
	crypt->crypto_ctx = dir->npe_ctx_phys;
	crypt->mode = dir->npe_mode;
	crypt->init_len = dir->npe_ctx_idx;

	crypt->crypt_offs = cryptoffset;
	crypt->crypt_len = eff_cryptlen;

	crypt->auth_offs = 0;
	crypt->auth_len = req->assoclen + cryptlen;
	BUG_ON(ivsize && !req->iv);
	memcpy(crypt->iv, req->iv, ivsize);

	buf = chainup_buffers(dev, req->src, crypt->auth_len,
			      &src_hook, flags, src_direction);
	req_ctx->src = src_hook.next;
	crypt->src_buf = src_hook.phys_next;
	if (!buf)
		goto free_buf_src;

	lastlen = buf->buf_len;
	if (lastlen >= authsize)
		crypt->icv_rev_aes = buf->phys_addr +
				     buf->buf_len - authsize;

	req_ctx->dst = NULL;

	if (req->src != req->dst) {
		struct buffer_desc dst_hook;

		crypt->mode |= NPE_OP_NOT_IN_PLACE;
		src_direction = DMA_TO_DEVICE;

		buf = chainup_buffers(dev, req->dst, crypt->auth_len,
				      &dst_hook, flags, DMA_FROM_DEVICE);
		req_ctx->dst = dst_hook.next;
		crypt->dst_buf = dst_hook.phys_next;

		if (!buf)
			goto free_buf_dst;

		if (encrypt) {
			lastlen = buf->buf_len;
			if (lastlen >= authsize)
				crypt->icv_rev_aes = buf->phys_addr +
						     buf->buf_len - authsize;
		}
	}

	if (unlikely(lastlen < authsize)) {
		/* The 12 hmac bytes are scattered,
                 * we need to copy them into a safe buffer */
		req_ctx->hmac_virt = dma_pool_alloc(buffer_pool, flags,
				&crypt->icv_rev_aes);
		if (unlikely(!req_ctx->hmac_virt))
			goto free_buf_src;
		if (!encrypt) {
			scatterwalk_map_and_copy(req_ctx->hmac_virt,
				req->src, cryptlen, authsize, 0);
		}
		req_ctx->encrypt = encrypt;
	} else {
		req_ctx->hmac_virt = NULL;
	}

	crypt->ctl_flags |= CTL_FLAG_PERFORM_AEAD;
	qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt));
	BUG_ON(qmgr_stat_overflow(SEND_QID));
	return -EINPROGRESS;

free_buf_src:
	free_buf_chain(dev, req_ctx->src, crypt->src_buf);
free_buf_dst:
	free_buf_chain(dev, req_ctx->dst, crypt->dst_buf);
	crypt->ctl_flags = CTL_FLAG_UNUSED;
	return -ENOMEM;
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 467 75.32% 2 40.00%
herbert xu herbert xu 143 23.06% 2 40.00%
russell king russell king 10 1.61% 1 20.00%
Total 620 100.00% 5 100.00%



static int aead_setup(struct crypto_aead *tfm, unsigned int authsize)
{
	struct ixp_ctx *ctx = crypto_aead_ctx(tfm);
	u32 *flags = &tfm->base.crt_flags;
	unsigned digest_len = crypto_aead_maxauthsize(tfm);
	int ret;

	if (!ctx->enckey_len && !ctx->authkey_len)
		return 0;
	init_completion(&ctx->completion);
	atomic_inc(&ctx->configuring);

	reset_sa_dir(&ctx->encrypt);
	reset_sa_dir(&ctx->decrypt);

	ret = setup_cipher(&tfm->base, 0, ctx->enckey, ctx->enckey_len);
	if (ret)
		goto out;
	ret = setup_cipher(&tfm->base, 1, ctx->enckey, ctx->enckey_len);
	if (ret)
		goto out;
	ret = setup_auth(&tfm->base, 0, authsize, ctx->authkey,
			ctx->authkey_len, digest_len);
	if (ret)
		goto out;
	ret = setup_auth(&tfm->base, 1, authsize,  ctx->authkey,
			ctx->authkey_len, digest_len);
	if (ret)
		goto out;

	if (*flags & CRYPTO_TFM_RES_WEAK_KEY) {
		if (*flags & CRYPTO_TFM_REQ_WEAK_KEY) {
			ret = -EINVAL;
			goto out;
		} else {
			*flags &= ~CRYPTO_TFM_RES_WEAK_KEY;
		}
	}
out:
	if (!atomic_dec_and_test(&ctx->configuring))
		wait_for_completion(&ctx->completion);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 268 99.63% 1 50.00%
herbert xu herbert xu 1 0.37% 1 50.00%
Total 269 100.00% 2 100.00%



static int aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
{
	int max = crypto_aead_maxauthsize(tfm) >> 2;

	if ((authsize>>2) < 1 || (authsize>>2) > max || (authsize & 3))
		return -EINVAL;
	return aead_setup(tfm, authsize);
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 60 98.36% 1 50.00%
herbert xu herbert xu 1 1.64% 1 50.00%
Total 61 100.00% 2 100.00%



static int aead_setkey(struct crypto_aead *tfm, const u8 *key,
			unsigned int keylen)
{
	struct ixp_ctx *ctx = crypto_aead_ctx(tfm);
	struct crypto_authenc_keys keys;

	if (crypto_authenc_extractkeys(&keys, key, keylen) != 0)
		goto badkey;

	if (keys.authkeylen > sizeof(ctx->authkey))
		goto badkey;

	if (keys.enckeylen > sizeof(ctx->enckey))
		goto badkey;

	memcpy(ctx->authkey, keys.authkey, keys.authkeylen);
	memcpy(ctx->enckey, keys.enckey, keys.enckeylen);
	ctx->authkey_len = keys.authkeylen;
	ctx->enckey_len = keys.enckeylen;

	return aead_setup(tfm, crypto_aead_authsize(tfm));
badkey:
	crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
	return -EINVAL;
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 102 66.67% 1 50.00%
mathias krause mathias krause 51 33.33% 1 50.00%
Total 153 100.00% 2 100.00%



static int aead_encrypt(struct aead_request *req)
{
	return aead_perform(req, 1, req->assoclen, req->cryptlen, req->iv);
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 31 100.00% 1 100.00%
Total 31 100.00% 1 100.00%



static int aead_decrypt(struct aead_request *req)
{
	return aead_perform(req, 0, req->assoclen, req->cryptlen, req->iv);
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 31 100.00% 1 100.00%
Total 31 100.00% 1 100.00%


static struct ixp_alg ixp4xx_algos[] = {
{
	.crypto	= {
		.cra_name	= "cbc(des)",
		.cra_blocksize	= DES_BLOCK_SIZE,
		.cra_u		= { .ablkcipher = {
			.min_keysize	= DES_KEY_SIZE,
			.max_keysize	= DES_KEY_SIZE,
			.ivsize		= DES_BLOCK_SIZE,
			.geniv		= "eseqiv",
                        }
		}
	},
	.cfg_enc = CIPH_ENCR | MOD_DES | MOD_CBC_ENC | KEYLEN_192,
	.cfg_dec = CIPH_DECR | MOD_DES | MOD_CBC_DEC | KEYLEN_192,

}, {
	.crypto	= {
		.cra_name	= "ecb(des)",
		.cra_blocksize	= DES_BLOCK_SIZE,
		.cra_u		= { .ablkcipher = {
			.min_keysize	= DES_KEY_SIZE,
			.max_keysize	= DES_KEY_SIZE,
                        }
		}
	},
	.cfg_enc = CIPH_ENCR | MOD_DES | MOD_ECB | KEYLEN_192,
	.cfg_dec = CIPH_DECR | MOD_DES | MOD_ECB | KEYLEN_192,
}, {
	.crypto	= {
		.cra_name	= "cbc(des3_ede)",
		.cra_blocksize	= DES3_EDE_BLOCK_SIZE,
		.cra_u		= { .ablkcipher = {
			.min_keysize	= DES3_EDE_KEY_SIZE,
			.max_keysize	= DES3_EDE_KEY_SIZE,
			.ivsize		= DES3_EDE_BLOCK_SIZE,
			.geniv		= "eseqiv",
                        }
		}
	},
	.cfg_enc = CIPH_ENCR | MOD_3DES | MOD_CBC_ENC | KEYLEN_192,
	.cfg_dec = CIPH_DECR | MOD_3DES | MOD_CBC_DEC | KEYLEN_192,
}, {
	.crypto	= {
		.cra_name	= "ecb(des3_ede)",
		.cra_blocksize	= DES3_EDE_BLOCK_SIZE,
		.cra_u		= { .ablkcipher = {
			.min_keysize	= DES3_EDE_KEY_SIZE,
			.max_keysize	= DES3_EDE_KEY_SIZE,
                        }
		}
	},
	.cfg_enc = CIPH_ENCR | MOD_3DES | MOD_ECB | KEYLEN_192,
	.cfg_dec = CIPH_DECR | MOD_3DES | MOD_ECB | KEYLEN_192,
}, {
	.crypto	= {
		.cra_name	= "cbc(aes)",
		.cra_blocksize	= AES_BLOCK_SIZE,
		.cra_u		= { .ablkcipher = {
			.min_keysize	= AES_MIN_KEY_SIZE,
			.max_keysize	= AES_MAX_KEY_SIZE,
			.ivsize		= AES_BLOCK_SIZE,
			.geniv		= "eseqiv",
                        }
		}
	},
	.cfg_enc = CIPH_ENCR | MOD_AES | MOD_CBC_ENC,
	.cfg_dec = CIPH_DECR | MOD_AES | MOD_CBC_DEC,
}, {
	.crypto	= {
		.cra_name	= "ecb(aes)",
		.cra_blocksize	= AES_BLOCK_SIZE,
		.cra_u		= { .ablkcipher = {
			.min_keysize	= AES_MIN_KEY_SIZE,
			.max_keysize	= AES_MAX_KEY_SIZE,
                        }
		}
	},
	.cfg_enc = CIPH_ENCR | MOD_AES | MOD_ECB,
	.cfg_dec = CIPH_DECR | MOD_AES | MOD_ECB,
}, {
	.crypto	= {
		.cra_name	= "ctr(aes)",
		.cra_blocksize	= AES_BLOCK_SIZE,
		.cra_u		= { .ablkcipher = {
			.min_keysize	= AES_MIN_KEY_SIZE,
			.max_keysize	= AES_MAX_KEY_SIZE,
			.ivsize		= AES_BLOCK_SIZE,
			.geniv		= "eseqiv",
                        }
		}
	},
	.cfg_enc = CIPH_ENCR | MOD_AES | MOD_CTR,
	.cfg_dec = CIPH_ENCR | MOD_AES | MOD_CTR,
}, {
	.crypto	= {
		.cra_name	= "rfc3686(ctr(aes))",
		.cra_blocksize	= AES_BLOCK_SIZE,
		.cra_u		= { .ablkcipher = {
			.min_keysize	= AES_MIN_KEY_SIZE,
			.max_keysize	= AES_MAX_KEY_SIZE,
			.ivsize		= AES_BLOCK_SIZE,
			.geniv		= "eseqiv",
			.setkey		= ablk_rfc3686_setkey,
			.encrypt	= ablk_rfc3686_crypt,
			.decrypt	= ablk_rfc3686_crypt }
		}
	},
	.cfg_enc = CIPH_ENCR | MOD_AES | MOD_CTR,
	.cfg_dec = CIPH_ENCR | MOD_AES | MOD_CTR,
} };


static struct ixp_aead_alg ixp4xx_aeads[] = {
{
	.crypto	= {
		.base = {
			.cra_name	= "authenc(hmac(md5),cbc(des))",
			.cra_blocksize	= DES_BLOCK_SIZE,
                },
		.ivsize		= DES_BLOCK_SIZE,
		.maxauthsize	= MD5_DIGEST_SIZE,
        },
	.hash = &hash_alg_md5,
	.cfg_enc = CIPH_ENCR | MOD_DES | MOD_CBC_ENC | KEYLEN_192,
	.cfg_dec = CIPH_DECR | MOD_DES | MOD_CBC_DEC | KEYLEN_192,
}, {
	.crypto	= {
		.base = {
			.cra_name	= "authenc(hmac(md5),cbc(des3_ede))",
			.cra_blocksize	= DES3_EDE_BLOCK_SIZE,
                },
		.ivsize		= DES3_EDE_BLOCK_SIZE,
		.maxauthsize	= MD5_DIGEST_SIZE,
        },
	.hash = &hash_alg_md5,
	.cfg_enc = CIPH_ENCR | MOD_3DES | MOD_CBC_ENC | KEYLEN_192,
	.cfg_dec = CIPH_DECR | MOD_3DES | MOD_CBC_DEC | KEYLEN_192,
}, {
	.crypto	= {
		.base = {
			.cra_name	= "authenc(hmac(sha1),cbc(des))",
			.cra_blocksize	= DES_BLOCK_SIZE,
                },
			.ivsize		= DES_BLOCK_SIZE,
			.maxauthsize	= SHA1_DIGEST_SIZE,
        },
	.hash = &hash_alg_sha1,
	.cfg_enc = CIPH_ENCR | MOD_DES | MOD_CBC_ENC | KEYLEN_192,
	.cfg_dec = CIPH_DECR | MOD_DES | MOD_CBC_DEC | KEYLEN_192,
}, {
	.crypto	= {
		.base = {
			.cra_name	= "authenc(hmac(sha1),cbc(des3_ede))",
			.cra_blocksize	= DES3_EDE_BLOCK_SIZE,
                },
		.ivsize		= DES3_EDE_BLOCK_SIZE,
		.maxauthsize	= SHA1_DIGEST_SIZE,
        },
	.hash = &hash_alg_sha1,
	.cfg_enc = CIPH_ENCR | MOD_3DES | MOD_CBC_ENC | KEYLEN_192,
	.cfg_dec = CIPH_DECR | MOD_3DES | MOD_CBC_DEC | KEYLEN_192,
}, {
	.crypto	= {
		.base = {
			.cra_name	= "authenc(hmac(md5),cbc(aes))",
			.cra_blocksize	= AES_BLOCK_SIZE,
                },
		.ivsize		= AES_BLOCK_SIZE,
		.maxauthsize	= MD5_DIGEST_SIZE,
        },
	.hash = &hash_alg_md5,
	.cfg_enc = CIPH_ENCR | MOD_AES | MOD_CBC_ENC,
	.cfg_dec = CIPH_DECR | MOD_AES | MOD_CBC_DEC,
}, {
	.crypto	= {
		.base = {
			.cra_name	= "authenc(hmac(sha1),cbc(aes))",
			.cra_blocksize	= AES_BLOCK_SIZE,
                },
		.ivsize		= AES_BLOCK_SIZE,
		.maxauthsize	= SHA1_DIGEST_SIZE,
        },
	.hash = &hash_alg_sha1,
	.cfg_enc = CIPH_ENCR | MOD_AES | MOD_CBC_ENC,
	.cfg_dec = CIPH_DECR | MOD_AES | MOD_CBC_DEC,
} };


#define IXP_POSTFIX "-ixp4xx"


static const struct platform_device_info ixp_dev_info __initdata = {
	.name		= DRIVER_NAME,
	.id		= 0,
	.dma_mask	= DMA_BIT_MASK(32),
};



static int __init ixp_module_init(void)
{
	int num = ARRAY_SIZE(ixp4xx_algos);
	int i, err;

	pdev = platform_device_register_full(&ixp_dev_info);
	if (IS_ERR(pdev))
		return PTR_ERR(pdev);

	spin_lock_init(&desc_lock);
	spin_lock_init(&emerg_lock);

	err = init_ixp_crypto(&pdev->dev);
	if (err) {
		platform_device_unregister(pdev);
		return err;
	}
	for (i=0; i< num; i++) {
		struct crypto_alg *cra = &ixp4xx_algos[i].crypto;

		if (snprintf(cra->cra_driver_name, CRYPTO_MAX_ALG_NAME,
			"%s"IXP_POSTFIX, cra->cra_name) >=
			CRYPTO_MAX_ALG_NAME)
		{
			continue;
		}
		if (!support_aes && (ixp4xx_algos[i].cfg_enc & MOD_AES)) {
			continue;
		}

		/* block ciphers */
		cra->cra_type = &crypto_ablkcipher_type;
		cra->cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
				 CRYPTO_ALG_KERN_DRIVER_ONLY |
				 CRYPTO_ALG_ASYNC;
		if (!cra->cra_ablkcipher.setkey)
			cra->cra_ablkcipher.setkey = ablk_setkey;
		if (!cra->cra_ablkcipher.encrypt)
			cra->cra_ablkcipher.encrypt = ablk_encrypt;
		if (!cra->cra_ablkcipher.decrypt)
			cra->cra_ablkcipher.decrypt = ablk_decrypt;
		cra->cra_init = init_tfm_ablk;

		cra->cra_ctxsize = sizeof(struct ixp_ctx);
		cra->cra_module = THIS_MODULE;
		cra->cra_alignmask = 3;
		cra->cra_priority = 300;
		cra->cra_exit = exit_tfm;
		if (crypto_register_alg(cra))
			printk(KERN_ERR "Failed to register '%s'\n",
				cra->cra_name);
		else
			ixp4xx_algos[i].registered = 1;
	}

	for (i = 0; i < ARRAY_SIZE(ixp4xx_aeads); i++) {
		struct aead_alg *cra = &ixp4xx_aeads[i].crypto;

		if (snprintf(cra->base.cra_driver_name, CRYPTO_MAX_ALG_NAME,
			     "%s"IXP_POSTFIX, cra->base.cra_name) >=
		    CRYPTO_MAX_ALG_NAME)
			continue;
		if (!support_aes && (ixp4xx_algos[i].cfg_enc & MOD_AES))
			continue;

		/* authenc */
		cra->base.cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY |
				      CRYPTO_ALG_ASYNC;
		cra->setkey = aead_setkey;
		cra->setauthsize = aead_setauthsize;
		cra->encrypt = aead_encrypt;
		cra->decrypt = aead_decrypt;
		cra->init = init_tfm_aead;
		cra->exit = exit_tfm_aead;

		cra->base.cra_ctxsize = sizeof(struct ixp_ctx);
		cra->base.cra_module = THIS_MODULE;
		cra->base.cra_alignmask = 3;
		cra->base.cra_priority = 300;

		if (crypto_register_aead(cra))
			printk(KERN_ERR "Failed to register '%s'\n",
				cra->base.cra_driver_name);
		else
			ixp4xx_aeads[i].registered = 1;
	}
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 299 63.21% 1 20.00%
herbert xu herbert xu 149 31.50% 1 20.00%
russell king russell king 21 4.44% 2 40.00%
nikos mavrogiannopoulos nikos mavrogiannopoulos 4 0.85% 1 20.00%
Total 473 100.00% 5 100.00%



static void __exit ixp_module_exit(void)
{
	int num = ARRAY_SIZE(ixp4xx_algos);
	int i;

	for (i = 0; i < ARRAY_SIZE(ixp4xx_aeads); i++) {
		if (ixp4xx_aeads[i].registered)
			crypto_unregister_aead(&ixp4xx_aeads[i].crypto);
	}

	for (i=0; i< num; i++) {
		if (ixp4xx_algos[i].registered)
			crypto_unregister_alg(&ixp4xx_algos[i].crypto);
	}
	release_ixp_crypto(&pdev->dev);
	platform_device_unregister(pdev);
}

Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 61 57.55% 1 25.00%
herbert xu herbert xu 38 35.85% 1 25.00%
russell king russell king 7 6.60% 2 50.00%
Total 106 100.00% 4 100.00%


module_init(ixp_module_init);

module_exit(ixp_module_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Christian Hohnstaedt <chohnstaedt@innominate.com>");
MODULE_DESCRIPTION("IXP4xx hardware crypto");

Overall Contributors
Person Tokens Prop Commits CommitProp
christian hohnstaedt christian hohnstaedt 6699 90.37% 3 15.00%
herbert xu herbert xu 462 6.23% 5 25.00%
russell king russell king 107 1.44% 3 15.00%
krzysztof halasa krzysztof halasa 71 0.96% 2 10.00%
mathias krause mathias krause 51 0.69% 1 5.00%
quentin lambert quentin lambert 11 0.15% 1 5.00%
nikos mavrogiannopoulos nikos mavrogiannopoulos 4 0.05% 1 5.00%
michal wrobel michal wrobel 3 0.04% 1 5.00%
tejun heo tejun heo 3 0.04% 1 5.00%
julia lawall julia lawall 1 0.01% 1 5.00%
cristian stoica cristian stoica 1 0.01% 1 5.00%
Total 7413 100.00% 20 100.00%
Directory: drivers/crypto

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
christian hohnstaedt	christian hohnstaedt	27	100.00%	1	100.00%
	Total	27	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.10 drivers/crypto/ixp4xx_crypto.c

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