crypto: cavium - Register the CNN55XX supported crypto algorithms.
Register the Symmetric crypto algorithms supported by CNN55XX driver with crypto subsystem. The following Symmetric crypto algorithms are supported, - aes with cbc, ecb, cfb, xts, ctr and cts modes - des3_ede with cbc and ecb modes Signed-off-by: Srikanth Jampala <Jampala.Srikanth@cavium.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Srikanth Jampala
Herbert Xu
parent
086eac9eb4
commit
f2663872f0
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@ -4,4 +4,5 @@ n5pf-objs := nitrox_main.o \
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nitrox_isr.o \
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nitrox_lib.o \
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nitrox_hal.o \
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nitrox_reqmgr.o
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nitrox_reqmgr.o \
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nitrox_algs.o
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@ -0,0 +1,457 @@
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#include <linux/crypto.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/printk.h>
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#include <crypto/aes.h>
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#include <crypto/skcipher.h>
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#include <crypto/ctr.h>
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#include <crypto/des.h>
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#include <crypto/xts.h>
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#include "nitrox_dev.h"
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#include "nitrox_common.h"
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#include "nitrox_req.h"
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#define PRIO 4001
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struct nitrox_cipher {
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const char *name;
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enum flexi_cipher value;
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};
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/**
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* supported cipher list
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*/
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static const struct nitrox_cipher flexi_cipher_table[] = {
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{ "null", CIPHER_NULL },
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{ "cbc(des3_ede)", CIPHER_3DES_CBC },
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{ "ecb(des3_ede)", CIPHER_3DES_ECB },
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{ "cbc(aes)", CIPHER_AES_CBC },
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{ "ecb(aes)", CIPHER_AES_ECB },
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{ "cfb(aes)", CIPHER_AES_CFB },
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{ "rfc3686(ctr(aes))", CIPHER_AES_CTR },
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{ "xts(aes)", CIPHER_AES_XTS },
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{ "cts(cbc(aes))", CIPHER_AES_CBC_CTS },
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{ NULL, CIPHER_INVALID }
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};
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static enum flexi_cipher flexi_cipher_type(const char *name)
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{
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const struct nitrox_cipher *cipher = flexi_cipher_table;
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while (cipher->name) {
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if (!strcmp(cipher->name, name))
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break;
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cipher++;
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}
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return cipher->value;
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}
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static int flexi_aes_keylen(int keylen)
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{
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int aes_keylen;
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switch (keylen) {
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case AES_KEYSIZE_128:
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aes_keylen = 1;
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break;
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case AES_KEYSIZE_192:
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aes_keylen = 2;
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break;
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case AES_KEYSIZE_256:
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aes_keylen = 3;
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break;
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default:
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aes_keylen = -EINVAL;
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break;
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}
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return aes_keylen;
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}
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static int nitrox_skcipher_init(struct crypto_skcipher *tfm)
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{
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struct nitrox_crypto_ctx *nctx = crypto_skcipher_ctx(tfm);
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void *fctx;
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/* get the first device */
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nctx->ndev = nitrox_get_first_device();
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if (!nctx->ndev)
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return -ENODEV;
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/* allocate nitrox crypto context */
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fctx = crypto_alloc_context(nctx->ndev);
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if (!fctx) {
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nitrox_put_device(nctx->ndev);
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return -ENOMEM;
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}
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nctx->u.ctx_handle = (uintptr_t)fctx;
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crypto_skcipher_set_reqsize(tfm, crypto_skcipher_reqsize(tfm) +
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sizeof(struct nitrox_kcrypt_request));
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return 0;
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}
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static void nitrox_skcipher_exit(struct crypto_skcipher *tfm)
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{
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struct nitrox_crypto_ctx *nctx = crypto_skcipher_ctx(tfm);
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/* free the nitrox crypto context */
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if (nctx->u.ctx_handle) {
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struct flexi_crypto_context *fctx = nctx->u.fctx;
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memset(&fctx->crypto, 0, sizeof(struct crypto_keys));
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memset(&fctx->auth, 0, sizeof(struct auth_keys));
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crypto_free_context((void *)fctx);
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}
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nitrox_put_device(nctx->ndev);
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nctx->u.ctx_handle = 0;
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nctx->ndev = NULL;
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}
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static inline int nitrox_skcipher_setkey(struct crypto_skcipher *cipher,
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int aes_keylen, const u8 *key,
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unsigned int keylen)
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{
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struct crypto_tfm *tfm = crypto_skcipher_tfm(cipher);
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struct nitrox_crypto_ctx *nctx = crypto_tfm_ctx(tfm);
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struct flexi_crypto_context *fctx;
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enum flexi_cipher cipher_type;
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const char *name;
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name = crypto_tfm_alg_name(tfm);
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cipher_type = flexi_cipher_type(name);
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if (unlikely(cipher_type == CIPHER_INVALID)) {
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pr_err("unsupported cipher: %s\n", name);
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return -EINVAL;
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}
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/* fill crypto context */
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fctx = nctx->u.fctx;
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fctx->flags = 0;
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fctx->w0.cipher_type = cipher_type;
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fctx->w0.aes_keylen = aes_keylen;
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fctx->w0.iv_source = IV_FROM_DPTR;
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fctx->flags = cpu_to_be64(*(u64 *)&fctx->w0);
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/* copy the key to context */
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memcpy(fctx->crypto.u.key, key, keylen);
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return 0;
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}
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static int nitrox_aes_setkey(struct crypto_skcipher *cipher, const u8 *key,
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unsigned int keylen)
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{
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int aes_keylen;
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aes_keylen = flexi_aes_keylen(keylen);
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if (aes_keylen < 0) {
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crypto_skcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
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return -EINVAL;
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}
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return nitrox_skcipher_setkey(cipher, aes_keylen, key, keylen);
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}
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static void nitrox_skcipher_callback(struct skcipher_request *skreq,
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int err)
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{
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if (err) {
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pr_err_ratelimited("request failed status 0x%0x\n", err);
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err = -EINVAL;
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}
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skcipher_request_complete(skreq, err);
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}
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static int nitrox_skcipher_crypt(struct skcipher_request *skreq, bool enc)
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{
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struct crypto_skcipher *cipher = crypto_skcipher_reqtfm(skreq);
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struct nitrox_crypto_ctx *nctx = crypto_skcipher_ctx(cipher);
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struct nitrox_kcrypt_request *nkreq = skcipher_request_ctx(skreq);
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int ivsize = crypto_skcipher_ivsize(cipher);
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struct se_crypto_request *creq;
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creq = &nkreq->creq;
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creq->flags = skreq->base.flags;
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creq->gfp = (skreq->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
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GFP_KERNEL : GFP_ATOMIC;
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/* fill the request */
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creq->ctrl.value = 0;
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creq->opcode = FLEXI_CRYPTO_ENCRYPT_HMAC;
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creq->ctrl.s.arg = (enc ? ENCRYPT : DECRYPT);
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/* param0: length of the data to be encrypted */
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creq->gph.param0 = cpu_to_be16(skreq->cryptlen);
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creq->gph.param1 = 0;
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/* param2: encryption data offset */
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creq->gph.param2 = cpu_to_be16(ivsize);
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creq->gph.param3 = 0;
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creq->ctx_handle = nctx->u.ctx_handle;
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creq->ctrl.s.ctxl = sizeof(struct flexi_crypto_context);
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/* copy the iv */
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memcpy(creq->iv, skreq->iv, ivsize);
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creq->ivsize = ivsize;
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creq->src = skreq->src;
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creq->dst = skreq->dst;
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nkreq->nctx = nctx;
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nkreq->skreq = skreq;
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/* send the crypto request */
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return nitrox_process_se_request(nctx->ndev, creq,
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nitrox_skcipher_callback, skreq);
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}
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static int nitrox_aes_encrypt(struct skcipher_request *skreq)
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{
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return nitrox_skcipher_crypt(skreq, true);
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}
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static int nitrox_aes_decrypt(struct skcipher_request *skreq)
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{
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return nitrox_skcipher_crypt(skreq, false);
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}
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static int nitrox_3des_setkey(struct crypto_skcipher *cipher,
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const u8 *key, unsigned int keylen)
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{
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if (keylen != DES3_EDE_KEY_SIZE) {
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crypto_skcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
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return -EINVAL;
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}
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return nitrox_skcipher_setkey(cipher, 0, key, keylen);
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}
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static int nitrox_3des_encrypt(struct skcipher_request *skreq)
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{
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return nitrox_skcipher_crypt(skreq, true);
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}
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static int nitrox_3des_decrypt(struct skcipher_request *skreq)
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{
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return nitrox_skcipher_crypt(skreq, false);
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}
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static int nitrox_aes_xts_setkey(struct crypto_skcipher *cipher,
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const u8 *key, unsigned int keylen)
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{
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struct crypto_tfm *tfm = crypto_skcipher_tfm(cipher);
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struct nitrox_crypto_ctx *nctx = crypto_tfm_ctx(tfm);
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struct flexi_crypto_context *fctx;
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int aes_keylen, ret;
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ret = xts_check_key(tfm, key, keylen);
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if (ret)
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return ret;
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keylen /= 2;
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aes_keylen = flexi_aes_keylen(keylen);
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if (aes_keylen < 0) {
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crypto_skcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
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return -EINVAL;
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}
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fctx = nctx->u.fctx;
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/* copy KEY2 */
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memcpy(fctx->auth.u.key2, (key + keylen), keylen);
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return nitrox_skcipher_setkey(cipher, aes_keylen, key, keylen);
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}
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static int nitrox_aes_ctr_rfc3686_setkey(struct crypto_skcipher *cipher,
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const u8 *key, unsigned int keylen)
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{
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struct crypto_tfm *tfm = crypto_skcipher_tfm(cipher);
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struct nitrox_crypto_ctx *nctx = crypto_tfm_ctx(tfm);
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struct flexi_crypto_context *fctx;
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int aes_keylen;
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if (keylen < CTR_RFC3686_NONCE_SIZE)
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return -EINVAL;
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fctx = nctx->u.fctx;
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memcpy(fctx->crypto.iv, key + (keylen - CTR_RFC3686_NONCE_SIZE),
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CTR_RFC3686_NONCE_SIZE);
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keylen -= CTR_RFC3686_NONCE_SIZE;
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aes_keylen = flexi_aes_keylen(keylen);
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if (aes_keylen < 0) {
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crypto_skcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
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return -EINVAL;
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}
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return nitrox_skcipher_setkey(cipher, aes_keylen, key, keylen);
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}
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static struct skcipher_alg nitrox_skciphers[] = { {
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.base = {
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.cra_name = "cbc(aes)",
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.cra_driver_name = "n5_cbc(aes)",
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.cra_priority = PRIO,
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.cra_flags = CRYPTO_ALG_ASYNC,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct nitrox_crypto_ctx),
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.cra_alignmask = 0,
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.cra_module = THIS_MODULE,
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},
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.min_keysize = AES_MIN_KEY_SIZE,
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.max_keysize = AES_MAX_KEY_SIZE,
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.ivsize = AES_BLOCK_SIZE,
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.setkey = nitrox_aes_setkey,
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.encrypt = nitrox_aes_encrypt,
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.decrypt = nitrox_aes_decrypt,
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.init = nitrox_skcipher_init,
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.exit = nitrox_skcipher_exit,
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}, {
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.base = {
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.cra_name = "ecb(aes)",
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.cra_driver_name = "n5_ecb(aes)",
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.cra_priority = PRIO,
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.cra_flags = CRYPTO_ALG_ASYNC,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct nitrox_crypto_ctx),
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.cra_alignmask = 0,
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.cra_module = THIS_MODULE,
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},
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.min_keysize = AES_MIN_KEY_SIZE,
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.max_keysize = AES_MAX_KEY_SIZE,
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.ivsize = AES_BLOCK_SIZE,
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.setkey = nitrox_aes_setkey,
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.encrypt = nitrox_aes_encrypt,
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.decrypt = nitrox_aes_decrypt,
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.init = nitrox_skcipher_init,
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.exit = nitrox_skcipher_exit,
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}, {
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.base = {
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.cra_name = "cfb(aes)",
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.cra_driver_name = "n5_cfb(aes)",
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.cra_priority = PRIO,
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.cra_flags = CRYPTO_ALG_ASYNC,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct nitrox_crypto_ctx),
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.cra_alignmask = 0,
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.cra_module = THIS_MODULE,
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},
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.min_keysize = AES_MIN_KEY_SIZE,
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.max_keysize = AES_MAX_KEY_SIZE,
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.ivsize = AES_BLOCK_SIZE,
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.setkey = nitrox_aes_setkey,
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.encrypt = nitrox_aes_encrypt,
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.decrypt = nitrox_aes_decrypt,
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.init = nitrox_skcipher_init,
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.exit = nitrox_skcipher_exit,
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}, {
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.base = {
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.cra_name = "xts(aes)",
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.cra_driver_name = "n5_xts(aes)",
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.cra_priority = PRIO,
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.cra_flags = CRYPTO_ALG_ASYNC,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct nitrox_crypto_ctx),
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.cra_alignmask = 0,
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.cra_module = THIS_MODULE,
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},
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.min_keysize = 2 * AES_MIN_KEY_SIZE,
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.max_keysize = 2 * AES_MAX_KEY_SIZE,
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.ivsize = AES_BLOCK_SIZE,
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.setkey = nitrox_aes_xts_setkey,
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.encrypt = nitrox_aes_encrypt,
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.decrypt = nitrox_aes_decrypt,
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.init = nitrox_skcipher_init,
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.exit = nitrox_skcipher_exit,
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}, {
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.base = {
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.cra_name = "rfc3686(ctr(aes))",
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.cra_driver_name = "n5_rfc3686(ctr(aes))",
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.cra_priority = PRIO,
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.cra_flags = CRYPTO_ALG_ASYNC,
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.cra_blocksize = 1,
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.cra_ctxsize = sizeof(struct nitrox_crypto_ctx),
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.cra_alignmask = 0,
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.cra_module = THIS_MODULE,
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},
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.min_keysize = AES_MIN_KEY_SIZE + CTR_RFC3686_NONCE_SIZE,
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.max_keysize = AES_MAX_KEY_SIZE + CTR_RFC3686_NONCE_SIZE,
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.ivsize = CTR_RFC3686_IV_SIZE,
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.init = nitrox_skcipher_init,
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.exit = nitrox_skcipher_exit,
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.setkey = nitrox_aes_ctr_rfc3686_setkey,
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.encrypt = nitrox_aes_encrypt,
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.decrypt = nitrox_aes_decrypt,
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}, {
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.base = {
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.cra_name = "cts(cbc(aes))",
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.cra_driver_name = "n5_cts(cbc(aes))",
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.cra_priority = PRIO,
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.cra_flags = CRYPTO_ALG_ASYNC,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct nitrox_crypto_ctx),
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.cra_alignmask = 0,
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.cra_type = &crypto_ablkcipher_type,
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.cra_module = THIS_MODULE,
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},
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.min_keysize = AES_MIN_KEY_SIZE,
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.max_keysize = AES_MAX_KEY_SIZE,
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.ivsize = AES_BLOCK_SIZE,
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.setkey = nitrox_aes_setkey,
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.encrypt = nitrox_aes_encrypt,
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.decrypt = nitrox_aes_decrypt,
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.init = nitrox_skcipher_init,
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.exit = nitrox_skcipher_exit,
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}, {
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.base = {
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.cra_name = "cbc(des3_ede)",
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.cra_driver_name = "n5_cbc(des3_ede)",
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.cra_priority = PRIO,
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.cra_flags = CRYPTO_ALG_ASYNC,
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.cra_blocksize = DES3_EDE_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct nitrox_crypto_ctx),
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.cra_alignmask = 0,
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.cra_module = THIS_MODULE,
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},
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.min_keysize = DES3_EDE_KEY_SIZE,
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.max_keysize = DES3_EDE_KEY_SIZE,
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.ivsize = DES3_EDE_BLOCK_SIZE,
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.setkey = nitrox_3des_setkey,
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.encrypt = nitrox_3des_encrypt,
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.decrypt = nitrox_3des_decrypt,
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.init = nitrox_skcipher_init,
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.exit = nitrox_skcipher_exit,
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}, {
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.base = {
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.cra_name = "ecb(des3_ede)",
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||||
.cra_driver_name = "n5_ecb(des3_ede)",
|
||||
.cra_priority = PRIO,
|
||||
.cra_flags = CRYPTO_ALG_ASYNC,
|
||||
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
||||
.cra_ctxsize = sizeof(struct nitrox_crypto_ctx),
|
||||
.cra_alignmask = 0,
|
||||
.cra_module = THIS_MODULE,
|
||||
},
|
||||
.min_keysize = DES3_EDE_KEY_SIZE,
|
||||
.max_keysize = DES3_EDE_KEY_SIZE,
|
||||
.ivsize = DES3_EDE_BLOCK_SIZE,
|
||||
.setkey = nitrox_3des_setkey,
|
||||
.encrypt = nitrox_3des_encrypt,
|
||||
.decrypt = nitrox_3des_decrypt,
|
||||
.init = nitrox_skcipher_init,
|
||||
.exit = nitrox_skcipher_exit,
|
||||
}
|
||||
|
||||
};
|
||||
|
||||
int nitrox_crypto_register(void)
|
||||
{
|
||||
return crypto_register_skciphers(nitrox_skciphers,
|
||||
ARRAY_SIZE(nitrox_skciphers));
|
||||
}
|
||||
|
||||
void nitrox_crypto_unregister(void)
|
||||
{
|
||||
crypto_unregister_skciphers(nitrox_skciphers,
|
||||
ARRAY_SIZE(nitrox_skciphers));
|
||||
}
|
||||
|
|
@ -4,6 +4,13 @@
|
|||
#include "nitrox_dev.h"
|
||||
#include "nitrox_req.h"
|
||||
|
||||
int nitrox_crypto_register(void);
|
||||
void nitrox_crypto_unregister(void);
|
||||
void *crypto_alloc_context(struct nitrox_device *ndev);
|
||||
void crypto_free_context(void *ctx);
|
||||
struct nitrox_device *nitrox_get_first_device(void);
|
||||
void nitrox_put_device(struct nitrox_device *ndev);
|
||||
|
||||
void nitrox_pf_cleanup_isr(struct nitrox_device *ndev);
|
||||
int nitrox_pf_init_isr(struct nitrox_device *ndev);
|
||||
|
||||
|
|
|
|||
|
|
@ -137,6 +137,44 @@ static void destroy_crypto_dma_pool(struct nitrox_device *ndev)
|
|||
ndev->ctx_pool = NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* crypto_alloc_context - Allocate crypto context from pool
|
||||
* @ndev: NITROX Device
|
||||
*/
|
||||
void *crypto_alloc_context(struct nitrox_device *ndev)
|
||||
{
|
||||
struct ctx_hdr *ctx;
|
||||
void *vaddr;
|
||||
dma_addr_t dma;
|
||||
|
||||
vaddr = dma_pool_alloc(ndev->ctx_pool, (GFP_ATOMIC | __GFP_ZERO), &dma);
|
||||
if (!vaddr)
|
||||
return NULL;
|
||||
|
||||
/* fill meta data */
|
||||
ctx = vaddr;
|
||||
ctx->pool = ndev->ctx_pool;
|
||||
ctx->dma = dma;
|
||||
ctx->ctx_dma = dma + sizeof(struct ctx_hdr);
|
||||
|
||||
return ((u8 *)vaddr + sizeof(struct ctx_hdr));
|
||||
}
|
||||
|
||||
/**
|
||||
* crypto_free_context - Free crypto context to pool
|
||||
* @ctx: context to free
|
||||
*/
|
||||
void crypto_free_context(void *ctx)
|
||||
{
|
||||
struct ctx_hdr *ctxp;
|
||||
|
||||
if (!ctx)
|
||||
return;
|
||||
|
||||
ctxp = (struct ctx_hdr *)((u8 *)ctx - sizeof(struct ctx_hdr));
|
||||
dma_pool_free(ctxp->pool, ctxp, ctxp->dma);
|
||||
}
|
||||
|
||||
/**
|
||||
* nitrox_common_sw_init - allocate software resources.
|
||||
* @ndev: NITROX device
|
||||
|
|
|
|||
|
|
@ -180,6 +180,35 @@ static void nitrox_remove_from_devlist(struct nitrox_device *ndev)
|
|||
mutex_unlock(&devlist_lock);
|
||||
}
|
||||
|
||||
struct nitrox_device *nitrox_get_first_device(void)
|
||||
{
|
||||
struct nitrox_device *ndev = NULL;
|
||||
|
||||
mutex_lock(&devlist_lock);
|
||||
list_for_each_entry(ndev, &ndevlist, list) {
|
||||
if (nitrox_ready(ndev))
|
||||
break;
|
||||
}
|
||||
mutex_unlock(&devlist_lock);
|
||||
if (!ndev)
|
||||
return NULL;
|
||||
|
||||
refcount_inc(&ndev->refcnt);
|
||||
/* barrier to sync with other cpus */
|
||||
smp_mb__after_atomic();
|
||||
return ndev;
|
||||
}
|
||||
|
||||
void nitrox_put_device(struct nitrox_device *ndev)
|
||||
{
|
||||
if (!ndev)
|
||||
return;
|
||||
|
||||
refcount_dec(&ndev->refcnt);
|
||||
/* barrier to sync with other cpus */
|
||||
smp_mb__after_atomic();
|
||||
}
|
||||
|
||||
static int nitrox_reset_device(struct pci_dev *pdev)
|
||||
{
|
||||
int pos = 0;
|
||||
|
|
@ -526,8 +555,18 @@ static int nitrox_probe(struct pci_dev *pdev,
|
|||
set_bit(NITROX_READY, &ndev->status);
|
||||
/* barrier to sync with other cpus */
|
||||
smp_mb__after_atomic();
|
||||
|
||||
err = nitrox_crypto_register();
|
||||
if (err)
|
||||
goto crypto_fail;
|
||||
|
||||
return 0;
|
||||
|
||||
crypto_fail:
|
||||
nitrox_debugfs_exit(ndev);
|
||||
clear_bit(NITROX_READY, &ndev->status);
|
||||
/* barrier to sync with other cpus */
|
||||
smp_mb__after_atomic();
|
||||
pf_hw_fail:
|
||||
nitrox_pf_sw_cleanup(ndev);
|
||||
ioremap_err:
|
||||
|
|
@ -565,6 +604,7 @@ static void nitrox_remove(struct pci_dev *pdev)
|
|||
smp_mb__after_atomic();
|
||||
|
||||
nitrox_remove_from_devlist(ndev);
|
||||
nitrox_crypto_unregister();
|
||||
nitrox_debugfs_exit(ndev);
|
||||
nitrox_pf_sw_cleanup(ndev);
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue