1498 lines
37 KiB
C
1498 lines
37 KiB
C
/*
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* Intel IXP4xx NPE-C crypto driver
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*
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* Copyright (C) 2008 Christian Hohnstaedt <chohnstaedt@innominate.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License
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* as published by the Free Software Foundation.
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*
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*/
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/dmapool.h>
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#include <linux/crypto.h>
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#include <linux/kernel.h>
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#include <linux/rtnetlink.h>
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#include <linux/interrupt.h>
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#include <linux/spinlock.h>
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#include <linux/gfp.h>
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#include <linux/module.h>
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#include <crypto/ctr.h>
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#include <crypto/des.h>
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#include <crypto/aes.h>
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#include <crypto/sha.h>
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#include <crypto/algapi.h>
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#include <crypto/aead.h>
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#include <crypto/authenc.h>
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#include <crypto/scatterwalk.h>
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#include <mach/npe.h>
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#include <mach/qmgr.h>
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#define MAX_KEYLEN 32
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/* hash: cfgword + 2 * digestlen; crypt: keylen + cfgword */
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#define NPE_CTX_LEN 80
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#define AES_BLOCK128 16
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#define NPE_OP_HASH_VERIFY 0x01
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#define NPE_OP_CCM_ENABLE 0x04
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#define NPE_OP_CRYPT_ENABLE 0x08
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#define NPE_OP_HASH_ENABLE 0x10
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#define NPE_OP_NOT_IN_PLACE 0x20
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#define NPE_OP_HMAC_DISABLE 0x40
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#define NPE_OP_CRYPT_ENCRYPT 0x80
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#define NPE_OP_CCM_GEN_MIC 0xcc
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#define NPE_OP_HASH_GEN_ICV 0x50
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#define NPE_OP_ENC_GEN_KEY 0xc9
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#define MOD_ECB 0x0000
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#define MOD_CTR 0x1000
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#define MOD_CBC_ENC 0x2000
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#define MOD_CBC_DEC 0x3000
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#define MOD_CCM_ENC 0x4000
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#define MOD_CCM_DEC 0x5000
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#define KEYLEN_128 4
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#define KEYLEN_192 6
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#define KEYLEN_256 8
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#define CIPH_DECR 0x0000
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#define CIPH_ENCR 0x0400
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#define MOD_DES 0x0000
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#define MOD_TDEA2 0x0100
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#define MOD_3DES 0x0200
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#define MOD_AES 0x0800
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#define MOD_AES128 (0x0800 | KEYLEN_128)
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#define MOD_AES192 (0x0900 | KEYLEN_192)
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#define MOD_AES256 (0x0a00 | KEYLEN_256)
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#define MAX_IVLEN 16
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#define NPE_ID 2 /* NPE C */
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#define NPE_QLEN 16
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/* Space for registering when the first
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* NPE_QLEN crypt_ctl are busy */
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#define NPE_QLEN_TOTAL 64
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#define SEND_QID 29
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#define RECV_QID 30
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#define CTL_FLAG_UNUSED 0x0000
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#define CTL_FLAG_USED 0x1000
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#define CTL_FLAG_PERFORM_ABLK 0x0001
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#define CTL_FLAG_GEN_ICV 0x0002
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#define CTL_FLAG_GEN_REVAES 0x0004
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#define CTL_FLAG_PERFORM_AEAD 0x0008
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#define CTL_FLAG_MASK 0x000f
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#define HMAC_IPAD_VALUE 0x36
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#define HMAC_OPAD_VALUE 0x5C
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#define HMAC_PAD_BLOCKLEN SHA1_BLOCK_SIZE
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#define MD5_DIGEST_SIZE 16
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struct buffer_desc {
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u32 phys_next;
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#ifdef __ARMEB__
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u16 buf_len;
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u16 pkt_len;
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#else
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u16 pkt_len;
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u16 buf_len;
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#endif
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u32 phys_addr;
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u32 __reserved[4];
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struct buffer_desc *next;
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enum dma_data_direction dir;
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};
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struct crypt_ctl {
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#ifdef __ARMEB__
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u8 mode; /* NPE_OP_* operation mode */
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u8 init_len;
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u16 reserved;
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#else
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u16 reserved;
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u8 init_len;
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u8 mode; /* NPE_OP_* operation mode */
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#endif
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u8 iv[MAX_IVLEN]; /* IV for CBC mode or CTR IV for CTR mode */
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u32 icv_rev_aes; /* icv or rev aes */
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u32 src_buf;
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u32 dst_buf;
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#ifdef __ARMEB__
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u16 auth_offs; /* Authentication start offset */
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u16 auth_len; /* Authentication data length */
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u16 crypt_offs; /* Cryption start offset */
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u16 crypt_len; /* Cryption data length */
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#else
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u16 auth_len; /* Authentication data length */
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u16 auth_offs; /* Authentication start offset */
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u16 crypt_len; /* Cryption data length */
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u16 crypt_offs; /* Cryption start offset */
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#endif
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u32 aadAddr; /* Additional Auth Data Addr for CCM mode */
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u32 crypto_ctx; /* NPE Crypto Param structure address */
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/* Used by Host: 4*4 bytes*/
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unsigned ctl_flags;
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union {
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struct ablkcipher_request *ablk_req;
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struct aead_request *aead_req;
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struct crypto_tfm *tfm;
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} data;
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struct buffer_desc *regist_buf;
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u8 *regist_ptr;
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};
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struct ablk_ctx {
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struct buffer_desc *src;
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struct buffer_desc *dst;
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};
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struct aead_ctx {
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struct buffer_desc *buffer;
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struct scatterlist ivlist;
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/* used when the hmac is not on one sg entry */
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u8 *hmac_virt;
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int encrypt;
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};
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struct ix_hash_algo {
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u32 cfgword;
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unsigned char *icv;
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};
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struct ix_sa_dir {
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unsigned char *npe_ctx;
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dma_addr_t npe_ctx_phys;
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int npe_ctx_idx;
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u8 npe_mode;
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};
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struct ixp_ctx {
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struct ix_sa_dir encrypt;
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struct ix_sa_dir decrypt;
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int authkey_len;
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u8 authkey[MAX_KEYLEN];
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int enckey_len;
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u8 enckey[MAX_KEYLEN];
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u8 salt[MAX_IVLEN];
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u8 nonce[CTR_RFC3686_NONCE_SIZE];
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unsigned salted;
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atomic_t configuring;
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struct completion completion;
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};
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struct ixp_alg {
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struct crypto_alg crypto;
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const struct ix_hash_algo *hash;
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u32 cfg_enc;
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u32 cfg_dec;
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int registered;
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};
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static const struct ix_hash_algo hash_alg_md5 = {
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.cfgword = 0xAA010004,
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.icv = "\x01\x23\x45\x67\x89\xAB\xCD\xEF"
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"\xFE\xDC\xBA\x98\x76\x54\x32\x10",
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};
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static const struct ix_hash_algo hash_alg_sha1 = {
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.cfgword = 0x00000005,
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.icv = "\x67\x45\x23\x01\xEF\xCD\xAB\x89\x98\xBA"
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"\xDC\xFE\x10\x32\x54\x76\xC3\xD2\xE1\xF0",
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};
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static struct npe *npe_c;
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static struct dma_pool *buffer_pool = NULL;
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static struct dma_pool *ctx_pool = NULL;
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static struct crypt_ctl *crypt_virt = NULL;
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static dma_addr_t crypt_phys;
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static int support_aes = 1;
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#define DRIVER_NAME "ixp4xx_crypto"
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static struct platform_device *pdev;
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static inline dma_addr_t crypt_virt2phys(struct crypt_ctl *virt)
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{
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return crypt_phys + (virt - crypt_virt) * sizeof(struct crypt_ctl);
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}
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static inline struct crypt_ctl *crypt_phys2virt(dma_addr_t phys)
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{
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return crypt_virt + (phys - crypt_phys) / sizeof(struct crypt_ctl);
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}
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static inline u32 cipher_cfg_enc(struct crypto_tfm *tfm)
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{
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return container_of(tfm->__crt_alg, struct ixp_alg,crypto)->cfg_enc;
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}
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static inline u32 cipher_cfg_dec(struct crypto_tfm *tfm)
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{
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return container_of(tfm->__crt_alg, struct ixp_alg,crypto)->cfg_dec;
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}
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static inline const struct ix_hash_algo *ix_hash(struct crypto_tfm *tfm)
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{
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return container_of(tfm->__crt_alg, struct ixp_alg, crypto)->hash;
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}
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static int setup_crypt_desc(void)
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{
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struct device *dev = &pdev->dev;
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BUILD_BUG_ON(sizeof(struct crypt_ctl) != 64);
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crypt_virt = dma_alloc_coherent(dev,
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NPE_QLEN * sizeof(struct crypt_ctl),
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&crypt_phys, GFP_ATOMIC);
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if (!crypt_virt)
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return -ENOMEM;
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memset(crypt_virt, 0, NPE_QLEN * sizeof(struct crypt_ctl));
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return 0;
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}
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static spinlock_t desc_lock;
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static struct crypt_ctl *get_crypt_desc(void)
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{
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int i;
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static int idx = 0;
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unsigned long flags;
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spin_lock_irqsave(&desc_lock, flags);
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if (unlikely(!crypt_virt))
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setup_crypt_desc();
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if (unlikely(!crypt_virt)) {
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spin_unlock_irqrestore(&desc_lock, flags);
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return NULL;
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}
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i = idx;
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if (crypt_virt[i].ctl_flags == CTL_FLAG_UNUSED) {
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if (++idx >= NPE_QLEN)
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idx = 0;
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crypt_virt[i].ctl_flags = CTL_FLAG_USED;
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spin_unlock_irqrestore(&desc_lock, flags);
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return crypt_virt +i;
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} else {
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spin_unlock_irqrestore(&desc_lock, flags);
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return NULL;
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}
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}
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static spinlock_t emerg_lock;
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static struct crypt_ctl *get_crypt_desc_emerg(void)
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{
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int i;
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static int idx = NPE_QLEN;
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struct crypt_ctl *desc;
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unsigned long flags;
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desc = get_crypt_desc();
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if (desc)
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return desc;
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if (unlikely(!crypt_virt))
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return NULL;
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spin_lock_irqsave(&emerg_lock, flags);
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i = idx;
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if (crypt_virt[i].ctl_flags == CTL_FLAG_UNUSED) {
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if (++idx >= NPE_QLEN_TOTAL)
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idx = NPE_QLEN;
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crypt_virt[i].ctl_flags = CTL_FLAG_USED;
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spin_unlock_irqrestore(&emerg_lock, flags);
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return crypt_virt +i;
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} else {
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spin_unlock_irqrestore(&emerg_lock, flags);
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return NULL;
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}
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}
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static void free_buf_chain(struct device *dev, struct buffer_desc *buf,u32 phys)
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{
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while (buf) {
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struct buffer_desc *buf1;
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u32 phys1;
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buf1 = buf->next;
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phys1 = buf->phys_next;
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dma_unmap_single(dev, buf->phys_next, buf->buf_len, buf->dir);
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dma_pool_free(buffer_pool, buf, phys);
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buf = buf1;
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phys = phys1;
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}
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}
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static struct tasklet_struct crypto_done_tasklet;
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static void finish_scattered_hmac(struct crypt_ctl *crypt)
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{
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struct aead_request *req = crypt->data.aead_req;
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struct aead_ctx *req_ctx = aead_request_ctx(req);
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struct crypto_aead *tfm = crypto_aead_reqtfm(req);
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int authsize = crypto_aead_authsize(tfm);
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int decryptlen = req->cryptlen - authsize;
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if (req_ctx->encrypt) {
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scatterwalk_map_and_copy(req_ctx->hmac_virt,
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req->src, decryptlen, authsize, 1);
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}
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dma_pool_free(buffer_pool, req_ctx->hmac_virt, crypt->icv_rev_aes);
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}
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static void one_packet(dma_addr_t phys)
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{
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struct device *dev = &pdev->dev;
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struct crypt_ctl *crypt;
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struct ixp_ctx *ctx;
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int failed;
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failed = phys & 0x1 ? -EBADMSG : 0;
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phys &= ~0x3;
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crypt = crypt_phys2virt(phys);
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switch (crypt->ctl_flags & CTL_FLAG_MASK) {
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case CTL_FLAG_PERFORM_AEAD: {
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struct aead_request *req = crypt->data.aead_req;
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struct aead_ctx *req_ctx = aead_request_ctx(req);
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free_buf_chain(dev, req_ctx->buffer, crypt->src_buf);
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if (req_ctx->hmac_virt) {
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finish_scattered_hmac(crypt);
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}
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req->base.complete(&req->base, failed);
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break;
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}
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case CTL_FLAG_PERFORM_ABLK: {
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struct ablkcipher_request *req = crypt->data.ablk_req;
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struct ablk_ctx *req_ctx = ablkcipher_request_ctx(req);
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if (req_ctx->dst) {
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free_buf_chain(dev, req_ctx->dst, crypt->dst_buf);
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}
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free_buf_chain(dev, req_ctx->src, crypt->src_buf);
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req->base.complete(&req->base, failed);
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break;
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}
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case CTL_FLAG_GEN_ICV:
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ctx = crypto_tfm_ctx(crypt->data.tfm);
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dma_pool_free(ctx_pool, crypt->regist_ptr,
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crypt->regist_buf->phys_addr);
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dma_pool_free(buffer_pool, crypt->regist_buf, crypt->src_buf);
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if (atomic_dec_and_test(&ctx->configuring))
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complete(&ctx->completion);
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break;
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case CTL_FLAG_GEN_REVAES:
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ctx = crypto_tfm_ctx(crypt->data.tfm);
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*(u32*)ctx->decrypt.npe_ctx &= cpu_to_be32(~CIPH_ENCR);
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if (atomic_dec_and_test(&ctx->configuring))
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complete(&ctx->completion);
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break;
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default:
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BUG();
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}
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crypt->ctl_flags = CTL_FLAG_UNUSED;
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}
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static void irqhandler(void *_unused)
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{
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tasklet_schedule(&crypto_done_tasklet);
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}
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static void crypto_done_action(unsigned long arg)
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{
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int i;
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for(i=0; i<4; i++) {
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dma_addr_t phys = qmgr_get_entry(RECV_QID);
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if (!phys)
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return;
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one_packet(phys);
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}
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tasklet_schedule(&crypto_done_tasklet);
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}
|
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static int init_ixp_crypto(struct device *dev)
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{
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int ret = -ENODEV;
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u32 msg[2] = { 0, 0 };
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if (! ( ~(*IXP4XX_EXP_CFG2) & (IXP4XX_FEATURE_HASH |
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IXP4XX_FEATURE_AES | IXP4XX_FEATURE_DES))) {
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printk(KERN_ERR "ixp_crypto: No HW crypto available\n");
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return ret;
|
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}
|
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npe_c = npe_request(NPE_ID);
|
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if (!npe_c)
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return ret;
|
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|
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if (!npe_running(npe_c)) {
|
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ret = npe_load_firmware(npe_c, npe_name(npe_c), dev);
|
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if (ret) {
|
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return ret;
|
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}
|
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if (npe_recv_message(npe_c, msg, "STATUS_MSG"))
|
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goto npe_error;
|
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} else {
|
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if (npe_send_message(npe_c, msg, "STATUS_MSG"))
|
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goto npe_error;
|
|
|
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if (npe_recv_message(npe_c, msg, "STATUS_MSG"))
|
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goto npe_error;
|
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}
|
|
|
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switch ((msg[1]>>16) & 0xff) {
|
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case 3:
|
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printk(KERN_WARNING "Firmware of %s lacks AES support\n",
|
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npe_name(npe_c));
|
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support_aes = 0;
|
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break;
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case 4:
|
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case 5:
|
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support_aes = 1;
|
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break;
|
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default:
|
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printk(KERN_ERR "Firmware of %s lacks crypto support\n",
|
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npe_name(npe_c));
|
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return -ENODEV;
|
|
}
|
|
/* buffer_pool will also be used to sometimes store the hmac,
|
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* so assure it is large enough
|
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*/
|
|
BUILD_BUG_ON(SHA1_DIGEST_SIZE > sizeof(struct buffer_desc));
|
|
buffer_pool = dma_pool_create("buffer", dev,
|
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sizeof(struct buffer_desc), 32, 0);
|
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ret = -ENOMEM;
|
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if (!buffer_pool) {
|
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goto err;
|
|
}
|
|
ctx_pool = dma_pool_create("context", dev,
|
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NPE_CTX_LEN, 16, 0);
|
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if (!ctx_pool) {
|
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goto err;
|
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}
|
|
ret = qmgr_request_queue(SEND_QID, NPE_QLEN_TOTAL, 0, 0,
|
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"ixp_crypto:out", NULL);
|
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if (ret)
|
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goto err;
|
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ret = qmgr_request_queue(RECV_QID, NPE_QLEN, 0, 0,
|
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"ixp_crypto:in", NULL);
|
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if (ret) {
|
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qmgr_release_queue(SEND_QID);
|
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goto err;
|
|
}
|
|
qmgr_set_irq(RECV_QID, QUEUE_IRQ_SRC_NOT_EMPTY, irqhandler, NULL);
|
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tasklet_init(&crypto_done_tasklet, crypto_done_action, 0);
|
|
|
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qmgr_enable_irq(RECV_QID);
|
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return 0;
|
|
|
|
npe_error:
|
|
printk(KERN_ERR "%s not responding\n", npe_name(npe_c));
|
|
ret = -EIO;
|
|
err:
|
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if (ctx_pool)
|
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dma_pool_destroy(ctx_pool);
|
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if (buffer_pool)
|
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dma_pool_destroy(buffer_pool);
|
|
npe_release(npe_c);
|
|
return ret;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static int init_tfm_ablk(struct crypto_tfm *tfm)
|
|
{
|
|
tfm->crt_ablkcipher.reqsize = sizeof(struct ablk_ctx);
|
|
return init_tfm(tfm);
|
|
}
|
|
|
|
static int init_tfm_aead(struct crypto_tfm *tfm)
|
|
{
|
|
tfm->crt_aead.reqsize = sizeof(struct aead_ctx);
|
|
return init_tfm(tfm);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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 = scatterwalk_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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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. */
|
|
BUG_ON(req->dst->length < nbytes);
|
|
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;
|
|
}
|
|
|
|
static int ablk_encrypt(struct ablkcipher_request *req)
|
|
{
|
|
return ablk_perform(req, 1);
|
|
}
|
|
|
|
static int ablk_decrypt(struct ablkcipher_request *req)
|
|
{
|
|
return ablk_perform(req, 0);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static int hmac_inconsistent(struct scatterlist *sg, unsigned start,
|
|
unsigned int nbytes)
|
|
{
|
|
int offset = 0;
|
|
|
|
if (!nbytes)
|
|
return 0;
|
|
|
|
for (;;) {
|
|
if (start < offset + sg->length)
|
|
break;
|
|
|
|
offset += sg->length;
|
|
sg = scatterwalk_sg_next(sg);
|
|
}
|
|
return (start + nbytes > offset + sg->length);
|
|
}
|
|
|
|
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;
|
|
|
|
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 + ivsize + cryptlen;
|
|
BUG_ON(ivsize && !req->iv);
|
|
memcpy(crypt->iv, req->iv, ivsize);
|
|
|
|
if (req->src != req->dst) {
|
|
BUG(); /* -ENOTSUP because of my laziness */
|
|
}
|
|
|
|
/* ASSOC data */
|
|
buf = chainup_buffers(dev, req->assoc, req->assoclen, &src_hook,
|
|
flags, DMA_TO_DEVICE);
|
|
req_ctx->buffer = src_hook.next;
|
|
crypt->src_buf = src_hook.phys_next;
|
|
if (!buf)
|
|
goto out;
|
|
/* IV */
|
|
sg_init_table(&req_ctx->ivlist, 1);
|
|
sg_set_buf(&req_ctx->ivlist, iv, ivsize);
|
|
buf = chainup_buffers(dev, &req_ctx->ivlist, ivsize, buf, flags,
|
|
DMA_BIDIRECTIONAL);
|
|
if (!buf)
|
|
goto free_chain;
|
|
if (unlikely(hmac_inconsistent(req->src, cryptlen, 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_chain;
|
|
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 */
|
|
buf = chainup_buffers(dev, req->src, cryptlen + authsize, buf, flags,
|
|
DMA_BIDIRECTIONAL);
|
|
if (!buf)
|
|
goto free_hmac_virt;
|
|
if (!req_ctx->hmac_virt) {
|
|
crypt->icv_rev_aes = buf->phys_addr + buf->buf_len - authsize;
|
|
}
|
|
|
|
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_hmac_virt:
|
|
if (req_ctx->hmac_virt) {
|
|
dma_pool_free(buffer_pool, req_ctx->hmac_virt,
|
|
crypt->icv_rev_aes);
|
|
}
|
|
free_chain:
|
|
free_buf_chain(dev, req_ctx->buffer, crypt->src_buf);
|
|
out:
|
|
crypt->ctl_flags = CTL_FLAG_UNUSED;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
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_alg(tfm)->maxauthsize;
|
|
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;
|
|
}
|
|
|
|
static int aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
|
|
{
|
|
int max = crypto_aead_alg(tfm)->maxauthsize >> 2;
|
|
|
|
if ((authsize>>2) < 1 || (authsize>>2) > max || (authsize & 3))
|
|
return -EINVAL;
|
|
return aead_setup(tfm, authsize);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static int aead_encrypt(struct aead_request *req)
|
|
{
|
|
unsigned ivsize = crypto_aead_ivsize(crypto_aead_reqtfm(req));
|
|
return aead_perform(req, 1, req->assoclen + ivsize,
|
|
req->cryptlen, req->iv);
|
|
}
|
|
|
|
static int aead_decrypt(struct aead_request *req)
|
|
{
|
|
unsigned ivsize = crypto_aead_ivsize(crypto_aead_reqtfm(req));
|
|
return aead_perform(req, 0, req->assoclen + ivsize,
|
|
req->cryptlen, req->iv);
|
|
}
|
|
|
|
static int aead_givencrypt(struct aead_givcrypt_request *req)
|
|
{
|
|
struct crypto_aead *tfm = aead_givcrypt_reqtfm(req);
|
|
struct ixp_ctx *ctx = crypto_aead_ctx(tfm);
|
|
unsigned len, ivsize = crypto_aead_ivsize(tfm);
|
|
__be64 seq;
|
|
|
|
/* copied from eseqiv.c */
|
|
if (!ctx->salted) {
|
|
get_random_bytes(ctx->salt, ivsize);
|
|
ctx->salted = 1;
|
|
}
|
|
memcpy(req->areq.iv, ctx->salt, ivsize);
|
|
len = ivsize;
|
|
if (ivsize > sizeof(u64)) {
|
|
memset(req->giv, 0, ivsize - sizeof(u64));
|
|
len = sizeof(u64);
|
|
}
|
|
seq = cpu_to_be64(req->seq);
|
|
memcpy(req->giv + ivsize - len, &seq, len);
|
|
return aead_perform(&req->areq, 1, req->areq.assoclen,
|
|
req->areq.cryptlen +ivsize, req->giv);
|
|
}
|
|
|
|
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,
|
|
}, {
|
|
.crypto = {
|
|
.cra_name = "authenc(hmac(md5),cbc(des))",
|
|
.cra_blocksize = DES_BLOCK_SIZE,
|
|
.cra_u = { .aead = {
|
|
.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 = {
|
|
.cra_name = "authenc(hmac(md5),cbc(des3_ede))",
|
|
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.cra_u = { .aead = {
|
|
.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 = {
|
|
.cra_name = "authenc(hmac(sha1),cbc(des))",
|
|
.cra_blocksize = DES_BLOCK_SIZE,
|
|
.cra_u = { .aead = {
|
|
.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 = {
|
|
.cra_name = "authenc(hmac(sha1),cbc(des3_ede))",
|
|
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.cra_u = { .aead = {
|
|
.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 = {
|
|
.cra_name = "authenc(hmac(md5),cbc(aes))",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_u = { .aead = {
|
|
.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 = {
|
|
.cra_name = "authenc(hmac(sha1),cbc(aes))",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_u = { .aead = {
|
|
.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;
|
|
}
|
|
if (!ixp4xx_algos[i].hash) {
|
|
/* 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;
|
|
} else {
|
|
/* authenc */
|
|
cra->cra_type = &crypto_aead_type;
|
|
cra->cra_flags = CRYPTO_ALG_TYPE_AEAD |
|
|
CRYPTO_ALG_KERN_DRIVER_ONLY |
|
|
CRYPTO_ALG_ASYNC;
|
|
cra->cra_aead.setkey = aead_setkey;
|
|
cra->cra_aead.setauthsize = aead_setauthsize;
|
|
cra->cra_aead.encrypt = aead_encrypt;
|
|
cra->cra_aead.decrypt = aead_decrypt;
|
|
cra->cra_aead.givencrypt = aead_givencrypt;
|
|
cra->cra_init = init_tfm_aead;
|
|
}
|
|
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;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void __exit ixp_module_exit(void)
|
|
{
|
|
int num = ARRAY_SIZE(ixp4xx_algos);
|
|
int i;
|
|
|
|
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);
|
|
}
|
|
|
|
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");
|
|
|