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Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Browse Source 
Pull crypto updates from Herbert Xu:
 "Here is the crypto update for 4.15:

  API:

   - Disambiguate EBUSY when queueing crypto request by adding ENOSPC.
     This change touches code outside the crypto API.
   - Reset settings when empty string is written to rng_current.

  Algorithms:

   - Add OSCCA SM3 secure hash.

  Drivers:

   - Remove old mv_cesa driver (replaced by marvell/cesa).
   - Enable rfc3686/ecb/cfb/ofb AES in crypto4xx.
   - Add ccm/gcm AES in crypto4xx.
   - Add support for BCM7278 in iproc-rng200.
   - Add hash support on Exynos in s5p-sss.
   - Fix fallback-induced error in vmx.
   - Fix output IV in atmel-aes.
   - Fix empty GCM hash in mediatek.

  Others:

   - Fix DoS potential in lib/mpi.
   - Fix potential out-of-order issues with padata"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (162 commits)
  lib/mpi: call cond_resched() from mpi_powm() loop
  crypto: stm32/hash - Fix return issue on update
  crypto: dh - Remove pointless checks for NULL 'p' and 'g'
  crypto: qat - Clean up error handling in qat_dh_set_secret()
  crypto: dh - Don't permit 'key' or 'g' size longer than 'p'
  crypto: dh - Don't permit 'p' to be 0
  crypto: dh - Fix double free of ctx->p
  hwrng: iproc-rng200 - Add support for BCM7278
  dt-bindings: rng: Document BCM7278 RNG200 compatible
  crypto: chcr - Replace _manual_ swap with swap macro
  crypto: marvell - Add a NULL entry at the end of mv_cesa_plat_id_table[]
  hwrng: virtio - Virtio RNG devices need to be re-registered after suspend/resume
  crypto: atmel - remove empty functions
  crypto: ecdh - remove empty exit()
  MAINTAINERS: update maintainer for qat
  crypto: caam - remove unused param of ctx_map_to_sec4_sg()
  crypto: caam - remove unneeded edesc zeroization
  crypto: atmel-aes - Reset the controller before each use
  crypto: atmel-aes - properly set IV after {en,de}crypt
  hwrng: core - Reset user selected rng by writing "" to rng_current
  ...
This commit is contained in:
Linus Torvalds
2017-11-14 10:52:09 -08:00
parent 894025f24b 1d9ddde12e
commit 37dc79565c
135 changed files with 5695 additions and 4642 deletions
Download Patch File Download Diff File Expand all files Collapse all files

81
drivers/md/dm-verity-target.c
View File

@@ -92,74 +92,33 @@ static sector_t verity_position_at_level(struct dm_verity *v, sector_t block,
return block >> (level * v->hash_per_block_bits);
}
/*
* Callback function for asynchrnous crypto API completion notification
*/
static void verity_op_done(struct crypto_async_request *base, int err)
{
struct verity_result *res = (struct verity_result *)base->data;
if (err == -EINPROGRESS)
return;
res->err = err;
complete(&res->completion);
}
/*
* Wait for async crypto API callback
*/
static inline int verity_complete_op(struct verity_result *res, int ret)
{
switch (ret) {
case 0:
break;
case -EINPROGRESS:
case -EBUSY:
ret = wait_for_completion_interruptible(&res->completion);
if (!ret)
ret = res->err;
reinit_completion(&res->completion);
break;
default:
DMERR("verity_wait_hash: crypto op submission failed: %d", ret);
}
if (unlikely(ret < 0))
DMERR("verity_wait_hash: crypto op failed: %d", ret);
return ret;
}
static int verity_hash_update(struct dm_verity *v, struct ahash_request *req,
const u8 *data, size_t len,
struct verity_result *res)
struct crypto_wait *wait)
{
struct scatterlist sg;
sg_init_one(&sg, data, len);
ahash_request_set_crypt(req, &sg, NULL, len);
return verity_complete_op(res, crypto_ahash_update(req));
return crypto_wait_req(crypto_ahash_update(req), wait);
}
/*
* Wrapper for crypto_ahash_init, which handles verity salting.
*/
static int verity_hash_init(struct dm_verity *v, struct ahash_request *req,
struct verity_result *res)
struct crypto_wait *wait)
{
int r;
ahash_request_set_tfm(req, v->tfm);
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP |
CRYPTO_TFM_REQ_MAY_BACKLOG,
verity_op_done, (void *)res);
init_completion(&res->completion);
crypto_req_done, (void *)wait);
crypto_init_wait(wait);
r = verity_complete_op(res, crypto_ahash_init(req));
r = crypto_wait_req(crypto_ahash_init(req), wait);
if (unlikely(r < 0)) {
DMERR("crypto_ahash_init failed: %d", r);
@@ -167,18 +126,18 @@ static int verity_hash_init(struct dm_verity *v, struct ahash_request *req,
}
if (likely(v->salt_size && (v->version >= 1)))
r = verity_hash_update(v, req, v->salt, v->salt_size, res);
r = verity_hash_update(v, req, v->salt, v->salt_size, wait);
return r;
}
static int verity_hash_final(struct dm_verity *v, struct ahash_request *req,
u8 *digest, struct verity_result *res)
u8 *digest, struct crypto_wait *wait)
{
int r;
if (unlikely(v->salt_size && (!v->version))) {
r = verity_hash_update(v, req, v->salt, v->salt_size, res);
r = verity_hash_update(v, req, v->salt, v->salt_size, wait);
if (r < 0) {
DMERR("verity_hash_final failed updating salt: %d", r);
@@ -187,7 +146,7 @@ static int verity_hash_final(struct dm_verity *v, struct ahash_request *req,
}
ahash_request_set_crypt(req, NULL, digest, 0);
r = verity_complete_op(res, crypto_ahash_final(req));
r = crypto_wait_req(crypto_ahash_final(req), wait);
out:
return r;
}
@@ -196,17 +155,17 @@ int verity_hash(struct dm_verity *v, struct ahash_request *req,
const u8 *data, size_t len, u8 *digest)
{
int r;
struct verity_result res;
struct crypto_wait wait;
r = verity_hash_init(v, req, &res);
r = verity_hash_init(v, req, &wait);
if (unlikely(r < 0))
goto out;
r = verity_hash_update(v, req, data, len, &res);
r = verity_hash_update(v, req, data, len, &wait);
if (unlikely(r < 0))
goto out;
r = verity_hash_final(v, req, digest, &res);
r = verity_hash_final(v, req, digest, &wait);
out:
return r;
@@ -389,7 +348,7 @@ out:
* Calculates the digest for the given bio
*/
int verity_for_io_block(struct dm_verity *v, struct dm_verity_io *io,
struct bvec_iter *iter, struct verity_result *res)
struct bvec_iter *iter, struct crypto_wait *wait)
{
unsigned int todo = 1 << v->data_dev_block_bits;
struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_io_data_size);
@@ -414,7 +373,7 @@ int verity_for_io_block(struct dm_verity *v, struct dm_verity_io *io,
*/
sg_set_page(&sg, bv.bv_page, len, bv.bv_offset);
ahash_request_set_crypt(req, &sg, NULL, len);
r = verity_complete_op(res, crypto_ahash_update(req));
r = crypto_wait_req(crypto_ahash_update(req), wait);
if (unlikely(r < 0)) {
DMERR("verity_for_io_block crypto op failed: %d", r);
@@ -482,7 +441,7 @@ static int verity_verify_io(struct dm_verity_io *io)
struct dm_verity *v = io->v;
struct bvec_iter start;
unsigned b;
struct verity_result res;
struct crypto_wait wait;
for (b = 0; b < io->n_blocks; b++) {
int r;
@@ -507,17 +466,17 @@ static int verity_verify_io(struct dm_verity_io *io)
continue;
}
r = verity_hash_init(v, req, &res);
r = verity_hash_init(v, req, &wait);
if (unlikely(r < 0))
return r;
start = io->iter;
r = verity_for_io_block(v, io, &io->iter, &res);
r = verity_for_io_block(v, io, &io->iter, &wait);
if (unlikely(r < 0))
return r;
r = verity_hash_final(v, req, verity_io_real_digest(v, io),
&res);
&wait);
if (unlikely(r < 0))
return r;