Commit 030f4e96 authored by Herbert Xu's avatar Herbert Xu

crypto: nx - Fix reentrancy bugs

This patch fixes a host of reentrancy bugs in the nx driver.  The
following algorithms are affected:

* CCM
* GCM
* CTR
* XCBC
* SHA256
* SHA512

The crypto API allows a single transform to be used by multiple
threads simultaneously.  For example, IPsec will use a single tfm
to process packets for a given SA.  As packets may arrive on
multiple CPUs that tfm must be reentrant.

The nx driver does try to deal with this by using a spin lock.
Unfortunately only the basic AES/CBC/ECB algorithms do this in
the correct way.

The symptom of these bugs may range from the generation of incorrect
output to memory corruption.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent acb33cc5
...@@ -494,8 +494,9 @@ static int ccm_nx_encrypt(struct aead_request *req, ...@@ -494,8 +494,9 @@ static int ccm_nx_encrypt(struct aead_request *req,
static int ccm4309_aes_nx_encrypt(struct aead_request *req) static int ccm4309_aes_nx_encrypt(struct aead_request *req)
{ {
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm);
struct nx_gcm_rctx *rctx = aead_request_ctx(req);
struct blkcipher_desc desc; struct blkcipher_desc desc;
u8 *iv = nx_ctx->priv.ccm.iv; u8 *iv = rctx->iv;
iv[0] = 3; iv[0] = 3;
memcpy(iv + 1, nx_ctx->priv.ccm.nonce, 3); memcpy(iv + 1, nx_ctx->priv.ccm.nonce, 3);
...@@ -525,8 +526,9 @@ static int ccm_aes_nx_encrypt(struct aead_request *req) ...@@ -525,8 +526,9 @@ static int ccm_aes_nx_encrypt(struct aead_request *req)
static int ccm4309_aes_nx_decrypt(struct aead_request *req) static int ccm4309_aes_nx_decrypt(struct aead_request *req)
{ {
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm);
struct nx_gcm_rctx *rctx = aead_request_ctx(req);
struct blkcipher_desc desc; struct blkcipher_desc desc;
u8 *iv = nx_ctx->priv.ccm.iv; u8 *iv = rctx->iv;
iv[0] = 3; iv[0] = 3;
memcpy(iv + 1, nx_ctx->priv.ccm.nonce, 3); memcpy(iv + 1, nx_ctx->priv.ccm.nonce, 3);
......
...@@ -72,7 +72,7 @@ static int ctr3686_aes_nx_set_key(struct crypto_tfm *tfm, ...@@ -72,7 +72,7 @@ static int ctr3686_aes_nx_set_key(struct crypto_tfm *tfm,
if (key_len < CTR_RFC3686_NONCE_SIZE) if (key_len < CTR_RFC3686_NONCE_SIZE)
return -EINVAL; return -EINVAL;
memcpy(nx_ctx->priv.ctr.iv, memcpy(nx_ctx->priv.ctr.nonce,
in_key + key_len - CTR_RFC3686_NONCE_SIZE, in_key + key_len - CTR_RFC3686_NONCE_SIZE,
CTR_RFC3686_NONCE_SIZE); CTR_RFC3686_NONCE_SIZE);
...@@ -131,14 +131,15 @@ static int ctr3686_aes_nx_crypt(struct blkcipher_desc *desc, ...@@ -131,14 +131,15 @@ static int ctr3686_aes_nx_crypt(struct blkcipher_desc *desc,
unsigned int nbytes) unsigned int nbytes)
{ {
struct nx_crypto_ctx *nx_ctx = crypto_blkcipher_ctx(desc->tfm); struct nx_crypto_ctx *nx_ctx = crypto_blkcipher_ctx(desc->tfm);
u8 *iv = nx_ctx->priv.ctr.iv; u8 iv[16];
memcpy(iv, nx_ctx->priv.ctr.nonce, CTR_RFC3686_IV_SIZE);
memcpy(iv + CTR_RFC3686_NONCE_SIZE, memcpy(iv + CTR_RFC3686_NONCE_SIZE,
desc->info, CTR_RFC3686_IV_SIZE); desc->info, CTR_RFC3686_IV_SIZE);
iv[12] = iv[13] = iv[14] = 0; iv[12] = iv[13] = iv[14] = 0;
iv[15] = 1; iv[15] = 1;
desc->info = nx_ctx->priv.ctr.iv; desc->info = iv;
return ctr_aes_nx_crypt(desc, dst, src, nbytes); return ctr_aes_nx_crypt(desc, dst, src, nbytes);
} }
......
...@@ -317,6 +317,7 @@ static int gcm_empty(struct aead_request *req, struct blkcipher_desc *desc, ...@@ -317,6 +317,7 @@ static int gcm_empty(struct aead_request *req, struct blkcipher_desc *desc,
static int gcm_aes_nx_crypt(struct aead_request *req, int enc) static int gcm_aes_nx_crypt(struct aead_request *req, int enc)
{ {
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm);
struct nx_gcm_rctx *rctx = aead_request_ctx(req);
struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; struct nx_csbcpb *csbcpb = nx_ctx->csbcpb;
struct blkcipher_desc desc; struct blkcipher_desc desc;
unsigned int nbytes = req->cryptlen; unsigned int nbytes = req->cryptlen;
...@@ -326,7 +327,7 @@ static int gcm_aes_nx_crypt(struct aead_request *req, int enc) ...@@ -326,7 +327,7 @@ static int gcm_aes_nx_crypt(struct aead_request *req, int enc)
spin_lock_irqsave(&nx_ctx->lock, irq_flags); spin_lock_irqsave(&nx_ctx->lock, irq_flags);
desc.info = nx_ctx->priv.gcm.iv; desc.info = rctx->iv;
/* initialize the counter */ /* initialize the counter */
*(u32 *)(desc.info + NX_GCM_CTR_OFFSET) = 1; *(u32 *)(desc.info + NX_GCM_CTR_OFFSET) = 1;
...@@ -424,8 +425,8 @@ static int gcm_aes_nx_crypt(struct aead_request *req, int enc) ...@@ -424,8 +425,8 @@ static int gcm_aes_nx_crypt(struct aead_request *req, int enc)
static int gcm_aes_nx_encrypt(struct aead_request *req) static int gcm_aes_nx_encrypt(struct aead_request *req)
{ {
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); struct nx_gcm_rctx *rctx = aead_request_ctx(req);
char *iv = nx_ctx->priv.gcm.iv; char *iv = rctx->iv;
memcpy(iv, req->iv, 12); memcpy(iv, req->iv, 12);
...@@ -434,8 +435,8 @@ static int gcm_aes_nx_encrypt(struct aead_request *req) ...@@ -434,8 +435,8 @@ static int gcm_aes_nx_encrypt(struct aead_request *req)
static int gcm_aes_nx_decrypt(struct aead_request *req) static int gcm_aes_nx_decrypt(struct aead_request *req)
{ {
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); struct nx_gcm_rctx *rctx = aead_request_ctx(req);
char *iv = nx_ctx->priv.gcm.iv; char *iv = rctx->iv;
memcpy(iv, req->iv, 12); memcpy(iv, req->iv, 12);
...@@ -445,7 +446,8 @@ static int gcm_aes_nx_decrypt(struct aead_request *req) ...@@ -445,7 +446,8 @@ static int gcm_aes_nx_decrypt(struct aead_request *req)
static int gcm4106_aes_nx_encrypt(struct aead_request *req) static int gcm4106_aes_nx_encrypt(struct aead_request *req)
{ {
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm);
char *iv = nx_ctx->priv.gcm.iv; struct nx_gcm_rctx *rctx = aead_request_ctx(req);
char *iv = rctx->iv;
char *nonce = nx_ctx->priv.gcm.nonce; char *nonce = nx_ctx->priv.gcm.nonce;
memcpy(iv, nonce, NX_GCM4106_NONCE_LEN); memcpy(iv, nonce, NX_GCM4106_NONCE_LEN);
...@@ -457,7 +459,8 @@ static int gcm4106_aes_nx_encrypt(struct aead_request *req) ...@@ -457,7 +459,8 @@ static int gcm4106_aes_nx_encrypt(struct aead_request *req)
static int gcm4106_aes_nx_decrypt(struct aead_request *req) static int gcm4106_aes_nx_decrypt(struct aead_request *req)
{ {
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm); struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(req->base.tfm);
char *iv = nx_ctx->priv.gcm.iv; struct nx_gcm_rctx *rctx = aead_request_ctx(req);
char *iv = rctx->iv;
char *nonce = nx_ctx->priv.gcm.nonce; char *nonce = nx_ctx->priv.gcm.nonce;
memcpy(iv, nonce, NX_GCM4106_NONCE_LEN); memcpy(iv, nonce, NX_GCM4106_NONCE_LEN);
......
...@@ -42,6 +42,7 @@ static int nx_xcbc_set_key(struct crypto_shash *desc, ...@@ -42,6 +42,7 @@ static int nx_xcbc_set_key(struct crypto_shash *desc,
unsigned int key_len) unsigned int key_len)
{ {
struct nx_crypto_ctx *nx_ctx = crypto_shash_ctx(desc); struct nx_crypto_ctx *nx_ctx = crypto_shash_ctx(desc);
struct nx_csbcpb *csbcpb = nx_ctx->csbcpb;
switch (key_len) { switch (key_len) {
case AES_KEYSIZE_128: case AES_KEYSIZE_128:
...@@ -51,7 +52,7 @@ static int nx_xcbc_set_key(struct crypto_shash *desc, ...@@ -51,7 +52,7 @@ static int nx_xcbc_set_key(struct crypto_shash *desc,
return -EINVAL; return -EINVAL;
} }
memcpy(nx_ctx->priv.xcbc.key, in_key, key_len); memcpy(csbcpb->cpb.aes_xcbc.key, in_key, key_len);
return 0; return 0;
} }
...@@ -148,32 +149,29 @@ static int nx_xcbc_empty(struct shash_desc *desc, u8 *out) ...@@ -148,32 +149,29 @@ static int nx_xcbc_empty(struct shash_desc *desc, u8 *out)
return rc; return rc;
} }
static int nx_xcbc_init(struct shash_desc *desc) static int nx_crypto_ctx_aes_xcbc_init2(struct crypto_tfm *tfm)
{ {
struct xcbc_state *sctx = shash_desc_ctx(desc); struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm);
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; struct nx_csbcpb *csbcpb = nx_ctx->csbcpb;
struct nx_sg *out_sg; int err;
int len;
nx_ctx_init(nx_ctx, HCOP_FC_AES); err = nx_crypto_ctx_aes_xcbc_init(tfm);
if (err)
return err;
memset(sctx, 0, sizeof *sctx); nx_ctx_init(nx_ctx, HCOP_FC_AES);
NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_128); NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_128);
csbcpb->cpb.hdr.mode = NX_MODE_AES_XCBC_MAC; csbcpb->cpb.hdr.mode = NX_MODE_AES_XCBC_MAC;
memcpy(csbcpb->cpb.aes_xcbc.key, nx_ctx->priv.xcbc.key, AES_BLOCK_SIZE); return 0;
memset(nx_ctx->priv.xcbc.key, 0, sizeof *nx_ctx->priv.xcbc.key); }
len = AES_BLOCK_SIZE;
out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state,
&len, nx_ctx->ap->sglen);
if (len != AES_BLOCK_SIZE) static int nx_xcbc_init(struct shash_desc *desc)
return -EINVAL; {
struct xcbc_state *sctx = shash_desc_ctx(desc);
nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg); memset(sctx, 0, sizeof *sctx);
return 0; return 0;
} }
...@@ -186,6 +184,7 @@ static int nx_xcbc_update(struct shash_desc *desc, ...@@ -186,6 +184,7 @@ static int nx_xcbc_update(struct shash_desc *desc,
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; struct nx_csbcpb *csbcpb = nx_ctx->csbcpb;
struct nx_sg *in_sg; struct nx_sg *in_sg;
struct nx_sg *out_sg;
u32 to_process = 0, leftover, total; u32 to_process = 0, leftover, total;
unsigned int max_sg_len; unsigned int max_sg_len;
unsigned long irq_flags; unsigned long irq_flags;
...@@ -213,6 +212,17 @@ static int nx_xcbc_update(struct shash_desc *desc, ...@@ -213,6 +212,17 @@ static int nx_xcbc_update(struct shash_desc *desc,
max_sg_len = min_t(u64, max_sg_len, max_sg_len = min_t(u64, max_sg_len,
nx_ctx->ap->databytelen/NX_PAGE_SIZE); nx_ctx->ap->databytelen/NX_PAGE_SIZE);
data_len = AES_BLOCK_SIZE;
out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state,
&len, nx_ctx->ap->sglen);
if (data_len != AES_BLOCK_SIZE) {
rc = -EINVAL;
goto out;
}
nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
do { do {
to_process = total - to_process; to_process = total - to_process;
to_process = to_process & ~(AES_BLOCK_SIZE - 1); to_process = to_process & ~(AES_BLOCK_SIZE - 1);
...@@ -235,8 +245,10 @@ static int nx_xcbc_update(struct shash_desc *desc, ...@@ -235,8 +245,10 @@ static int nx_xcbc_update(struct shash_desc *desc,
(u8 *) sctx->buffer, (u8 *) sctx->buffer,
&data_len, &data_len,
max_sg_len); max_sg_len);
if (data_len != sctx->count) if (data_len != sctx->count) {
return -EINVAL; rc = -EINVAL;
goto out;
}
} }
data_len = to_process - sctx->count; data_len = to_process - sctx->count;
...@@ -245,8 +257,10 @@ static int nx_xcbc_update(struct shash_desc *desc, ...@@ -245,8 +257,10 @@ static int nx_xcbc_update(struct shash_desc *desc,
&data_len, &data_len,
max_sg_len); max_sg_len);
if (data_len != to_process - sctx->count) if (data_len != to_process - sctx->count) {
return -EINVAL; rc = -EINVAL;
goto out;
}
nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) *
sizeof(struct nx_sg); sizeof(struct nx_sg);
...@@ -325,15 +339,19 @@ static int nx_xcbc_final(struct shash_desc *desc, u8 *out) ...@@ -325,15 +339,19 @@ static int nx_xcbc_final(struct shash_desc *desc, u8 *out)
in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *)sctx->buffer, in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *)sctx->buffer,
&len, nx_ctx->ap->sglen); &len, nx_ctx->ap->sglen);
if (len != sctx->count) if (len != sctx->count) {
return -EINVAL; rc = -EINVAL;
goto out;
}
len = AES_BLOCK_SIZE; len = AES_BLOCK_SIZE;
out_sg = nx_build_sg_list(nx_ctx->out_sg, out, &len, out_sg = nx_build_sg_list(nx_ctx->out_sg, out, &len,
nx_ctx->ap->sglen); nx_ctx->ap->sglen);
if (len != AES_BLOCK_SIZE) if (len != AES_BLOCK_SIZE) {
return -EINVAL; rc = -EINVAL;
goto out;
}
nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg); nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg);
nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg); nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
...@@ -372,7 +390,7 @@ struct shash_alg nx_shash_aes_xcbc_alg = { ...@@ -372,7 +390,7 @@ struct shash_alg nx_shash_aes_xcbc_alg = {
.cra_blocksize = AES_BLOCK_SIZE, .cra_blocksize = AES_BLOCK_SIZE,
.cra_module = THIS_MODULE, .cra_module = THIS_MODULE,
.cra_ctxsize = sizeof(struct nx_crypto_ctx), .cra_ctxsize = sizeof(struct nx_crypto_ctx),
.cra_init = nx_crypto_ctx_aes_xcbc_init, .cra_init = nx_crypto_ctx_aes_xcbc_init2,
.cra_exit = nx_crypto_ctx_exit, .cra_exit = nx_crypto_ctx_exit,
} }
}; };
...@@ -29,34 +29,28 @@ ...@@ -29,34 +29,28 @@
#include "nx.h" #include "nx.h"
static int nx_sha256_init(struct shash_desc *desc) static int nx_crypto_ctx_sha256_init(struct crypto_tfm *tfm)
{ {
struct sha256_state *sctx = shash_desc_ctx(desc); struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm);
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); int err;
struct nx_sg *out_sg;
int len;
u32 max_sg_len;
nx_ctx_init(nx_ctx, HCOP_FC_SHA); err = nx_crypto_ctx_sha_init(tfm);
if (err)
return err;
memset(sctx, 0, sizeof *sctx); nx_ctx_init(nx_ctx, HCOP_FC_SHA);
nx_ctx->ap = &nx_ctx->props[NX_PROPS_SHA256]; nx_ctx->ap = &nx_ctx->props[NX_PROPS_SHA256];
NX_CPB_SET_DIGEST_SIZE(nx_ctx->csbcpb, NX_DS_SHA256); NX_CPB_SET_DIGEST_SIZE(nx_ctx->csbcpb, NX_DS_SHA256);
max_sg_len = min_t(u64, nx_ctx->ap->sglen, return 0;
nx_driver.of.max_sg_len/sizeof(struct nx_sg)); }
max_sg_len = min_t(u64, max_sg_len,
nx_ctx->ap->databytelen/NX_PAGE_SIZE);
len = SHA256_DIGEST_SIZE; static int nx_sha256_init(struct shash_desc *desc) {
out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state, struct sha256_state *sctx = shash_desc_ctx(desc);
&len, max_sg_len);
nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
if (len != SHA256_DIGEST_SIZE) memset(sctx, 0, sizeof *sctx);
return -EINVAL;
sctx->state[0] = __cpu_to_be32(SHA256_H0); sctx->state[0] = __cpu_to_be32(SHA256_H0);
sctx->state[1] = __cpu_to_be32(SHA256_H1); sctx->state[1] = __cpu_to_be32(SHA256_H1);
...@@ -78,6 +72,7 @@ static int nx_sha256_update(struct shash_desc *desc, const u8 *data, ...@@ -78,6 +72,7 @@ static int nx_sha256_update(struct shash_desc *desc, const u8 *data,
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb; struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
struct nx_sg *in_sg; struct nx_sg *in_sg;
struct nx_sg *out_sg;
u64 to_process = 0, leftover, total; u64 to_process = 0, leftover, total;
unsigned long irq_flags; unsigned long irq_flags;
int rc = 0; int rc = 0;
...@@ -108,6 +103,16 @@ static int nx_sha256_update(struct shash_desc *desc, const u8 *data, ...@@ -108,6 +103,16 @@ static int nx_sha256_update(struct shash_desc *desc, const u8 *data,
max_sg_len = min_t(u64, max_sg_len, max_sg_len = min_t(u64, max_sg_len,
nx_ctx->ap->databytelen/NX_PAGE_SIZE); nx_ctx->ap->databytelen/NX_PAGE_SIZE);
data_len = SHA256_DIGEST_SIZE;
out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state,
&data_len, max_sg_len);
nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
if (data_len != SHA256_DIGEST_SIZE) {
rc = -EINVAL;
goto out;
}
do { do {
/* /*
* to_process: the SHA256_BLOCK_SIZE data chunk to process in * to_process: the SHA256_BLOCK_SIZE data chunk to process in
...@@ -282,7 +287,7 @@ struct shash_alg nx_shash_sha256_alg = { ...@@ -282,7 +287,7 @@ struct shash_alg nx_shash_sha256_alg = {
.cra_blocksize = SHA256_BLOCK_SIZE, .cra_blocksize = SHA256_BLOCK_SIZE,
.cra_module = THIS_MODULE, .cra_module = THIS_MODULE,
.cra_ctxsize = sizeof(struct nx_crypto_ctx), .cra_ctxsize = sizeof(struct nx_crypto_ctx),
.cra_init = nx_crypto_ctx_sha_init, .cra_init = nx_crypto_ctx_sha256_init,
.cra_exit = nx_crypto_ctx_exit, .cra_exit = nx_crypto_ctx_exit,
} }
}; };
...@@ -28,34 +28,29 @@ ...@@ -28,34 +28,29 @@
#include "nx.h" #include "nx.h"
static int nx_sha512_init(struct shash_desc *desc) static int nx_crypto_ctx_sha512_init(struct crypto_tfm *tfm)
{ {
struct sha512_state *sctx = shash_desc_ctx(desc); struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm);
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); int err;
struct nx_sg *out_sg;
int len;
u32 max_sg_len;
nx_ctx_init(nx_ctx, HCOP_FC_SHA); err = nx_crypto_ctx_sha_init(tfm);
if (err)
return err;
memset(sctx, 0, sizeof *sctx); nx_ctx_init(nx_ctx, HCOP_FC_SHA);
nx_ctx->ap = &nx_ctx->props[NX_PROPS_SHA512]; nx_ctx->ap = &nx_ctx->props[NX_PROPS_SHA512];
NX_CPB_SET_DIGEST_SIZE(nx_ctx->csbcpb, NX_DS_SHA512); NX_CPB_SET_DIGEST_SIZE(nx_ctx->csbcpb, NX_DS_SHA512);
max_sg_len = min_t(u64, nx_ctx->ap->sglen, return 0;
nx_driver.of.max_sg_len/sizeof(struct nx_sg)); }
max_sg_len = min_t(u64, max_sg_len,
nx_ctx->ap->databytelen/NX_PAGE_SIZE);
len = SHA512_DIGEST_SIZE; static int nx_sha512_init(struct shash_desc *desc)
out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state, {
&len, max_sg_len); struct sha512_state *sctx = shash_desc_ctx(desc);
nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
if (len != SHA512_DIGEST_SIZE) memset(sctx, 0, sizeof *sctx);
return -EINVAL;
sctx->state[0] = __cpu_to_be64(SHA512_H0); sctx->state[0] = __cpu_to_be64(SHA512_H0);
sctx->state[1] = __cpu_to_be64(SHA512_H1); sctx->state[1] = __cpu_to_be64(SHA512_H1);
...@@ -77,6 +72,7 @@ static int nx_sha512_update(struct shash_desc *desc, const u8 *data, ...@@ -77,6 +72,7 @@ static int nx_sha512_update(struct shash_desc *desc, const u8 *data,
struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base); struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb; struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
struct nx_sg *in_sg; struct nx_sg *in_sg;
struct nx_sg *out_sg;
u64 to_process, leftover = 0, total; u64 to_process, leftover = 0, total;
unsigned long irq_flags; unsigned long irq_flags;
int rc = 0; int rc = 0;
...@@ -107,6 +103,16 @@ static int nx_sha512_update(struct shash_desc *desc, const u8 *data, ...@@ -107,6 +103,16 @@ static int nx_sha512_update(struct shash_desc *desc, const u8 *data,
max_sg_len = min_t(u64, max_sg_len, max_sg_len = min_t(u64, max_sg_len,
nx_ctx->ap->databytelen/NX_PAGE_SIZE); nx_ctx->ap->databytelen/NX_PAGE_SIZE);
data_len = SHA512_DIGEST_SIZE;
out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state,
&data_len, max_sg_len);
nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
if (data_len != SHA512_DIGEST_SIZE) {
rc = -EINVAL;
goto out;
}
do { do {
/* /*
* to_process: the SHA512_BLOCK_SIZE data chunk to process in * to_process: the SHA512_BLOCK_SIZE data chunk to process in
...@@ -288,7 +294,7 @@ struct shash_alg nx_shash_sha512_alg = { ...@@ -288,7 +294,7 @@ struct shash_alg nx_shash_sha512_alg = {
.cra_blocksize = SHA512_BLOCK_SIZE, .cra_blocksize = SHA512_BLOCK_SIZE,
.cra_module = THIS_MODULE, .cra_module = THIS_MODULE,
.cra_ctxsize = sizeof(struct nx_crypto_ctx), .cra_ctxsize = sizeof(struct nx_crypto_ctx),
.cra_init = nx_crypto_ctx_sha_init, .cra_init = nx_crypto_ctx_sha512_init,
.cra_exit = nx_crypto_ctx_exit, .cra_exit = nx_crypto_ctx_exit,
} }
}; };
...@@ -713,12 +713,15 @@ static int nx_crypto_ctx_init(struct nx_crypto_ctx *nx_ctx, u32 fc, u32 mode) ...@@ -713,12 +713,15 @@ static int nx_crypto_ctx_init(struct nx_crypto_ctx *nx_ctx, u32 fc, u32 mode)
/* entry points from the crypto tfm initializers */ /* entry points from the crypto tfm initializers */
int nx_crypto_ctx_aes_ccm_init(struct crypto_tfm *tfm) int nx_crypto_ctx_aes_ccm_init(struct crypto_tfm *tfm)
{ {
crypto_aead_set_reqsize(__crypto_aead_cast(tfm),
sizeof(struct nx_ccm_rctx));
return nx_crypto_ctx_init(crypto_tfm_ctx(tfm), NX_FC_AES, return nx_crypto_ctx_init(crypto_tfm_ctx(tfm), NX_FC_AES,
NX_MODE_AES_CCM); NX_MODE_AES_CCM);
} }
int nx_crypto_ctx_aes_gcm_init(struct crypto_aead *tfm) int nx_crypto_ctx_aes_gcm_init(struct crypto_aead *tfm)
{ {
crypto_aead_set_reqsize(tfm, sizeof(struct nx_gcm_rctx));
return nx_crypto_ctx_init(crypto_aead_ctx(tfm), NX_FC_AES, return nx_crypto_ctx_init(crypto_aead_ctx(tfm), NX_FC_AES,
NX_MODE_AES_GCM); NX_MODE_AES_GCM);
} }
......
...@@ -2,6 +2,8 @@ ...@@ -2,6 +2,8 @@
#ifndef __NX_H__ #ifndef __NX_H__
#define __NX_H__ #define __NX_H__
#include <crypto/ctr.h>
#define NX_NAME "nx-crypto" #define NX_NAME "nx-crypto"
#define NX_STRING "IBM Power7+ Nest Accelerator Crypto Driver" #define NX_STRING "IBM Power7+ Nest Accelerator Crypto Driver"
#define NX_VERSION "1.0" #define NX_VERSION "1.0"
...@@ -91,8 +93,11 @@ struct nx_crypto_driver { ...@@ -91,8 +93,11 @@ struct nx_crypto_driver {
#define NX_GCM4106_NONCE_LEN (4) #define NX_GCM4106_NONCE_LEN (4)
#define NX_GCM_CTR_OFFSET (12) #define NX_GCM_CTR_OFFSET (12)
struct nx_gcm_priv { struct nx_gcm_rctx {
u8 iv[16]; u8 iv[16];
};
struct nx_gcm_priv {
u8 iauth_tag[16]; u8 iauth_tag[16];
u8 nonce[NX_GCM4106_NONCE_LEN]; u8 nonce[NX_GCM4106_NONCE_LEN];
}; };
...@@ -100,8 +105,11 @@ struct nx_gcm_priv { ...@@ -100,8 +105,11 @@ struct nx_gcm_priv {
#define NX_CCM_AES_KEY_LEN (16) #define NX_CCM_AES_KEY_LEN (16)
#define NX_CCM4309_AES_KEY_LEN (19) #define NX_CCM4309_AES_KEY_LEN (19)
#define NX_CCM4309_NONCE_LEN (3) #define NX_CCM4309_NONCE_LEN (3)
struct nx_ccm_priv { struct nx_ccm_rctx {
u8 iv[16]; u8 iv[16];
};
struct nx_ccm_priv {
u8 b0[16]; u8 b0[16];
u8 iauth_tag[16]; u8 iauth_tag[16];
u8 oauth_tag[16]; u8 oauth_tag[16];
...@@ -113,7 +121,7 @@ struct nx_xcbc_priv { ...@@ -113,7 +121,7 @@ struct nx_xcbc_priv {
}; };
struct nx_ctr_priv { struct nx_ctr_priv {
u8 iv[16]; u8 nonce[CTR_RFC3686_NONCE_SIZE];
}; };
struct nx_crypto_ctx { struct nx_crypto_ctx {
......
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