[PATCH 20/26] drbd: Use shash and ahash

From: Herbert Xu
Date: Sun Jan 24 2016 - 08:20:18 EST

This patch replaces uses of the long obsolete hash interface with
either shash (for non-SG users) or ahash.

Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
---

drivers/block/drbd/drbd_int.h | 16 +++++-----
drivers/block/drbd/drbd_main.c | 16 +++++-----
drivers/block/drbd/drbd_nl.c | 59 +++++++++++++++++++++++--------------
drivers/block/drbd/drbd_receiver.c | 56 ++++++++++++++++-------------------
drivers/block/drbd/drbd_worker.c | 43 +++++++++++++++-----------
5 files changed, 103 insertions(+), 87 deletions(-)

diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index e66d453..686d955 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -26,13 +26,13 @@
#ifndef _DRBD_INT_H
#define _DRBD_INT_H

+#include <crypto/hash.h>
#include <linux/compiler.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/sched.h>
#include <linux/bitops.h>
#include <linux/slab.h>
-#include <linux/crypto.h>
#include <linux/ratelimit.h>
#include <linux/tcp.h>
#include <linux/mutex.h>
@@ -737,11 +737,11 @@ struct drbd_connection {

struct list_head transfer_log; /* all requests not yet fully processed */

- struct crypto_hash *cram_hmac_tfm;
- struct crypto_hash *integrity_tfm; /* checksums we compute, updates protected by connection->data->mutex */
- struct crypto_hash *peer_integrity_tfm; /* checksums we verify, only accessed from receiver thread */
- struct crypto_hash *csums_tfm;
- struct crypto_hash *verify_tfm;
+ struct crypto_shash *cram_hmac_tfm;
+ struct crypto_ahash *integrity_tfm; /* checksums we compute, updates protected by connection->data->mutex */
+ struct crypto_ahash *peer_integrity_tfm; /* checksums we verify, only accessed from receiver thread */
+ struct crypto_ahash *csums_tfm;
+ struct crypto_ahash *verify_tfm;
void *int_dig_in;
void *int_dig_vv;

@@ -1511,8 +1511,8 @@ static inline void ov_out_of_sync_print(struct drbd_device *device)
}


-extern void drbd_csum_bio(struct crypto_hash *, struct bio *, void *);
-extern void drbd_csum_ee(struct crypto_hash *, struct drbd_peer_request *, void *);
+extern void drbd_csum_bio(struct crypto_ahash *, struct bio *, void *);
+extern void drbd_csum_ee(struct crypto_ahash *, struct drbd_peer_request *, void *);
/* worker callbacks */
extern int w_e_end_data_req(struct drbd_work *, int);
extern int w_e_end_rsdata_req(struct drbd_work *, int);
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 74d97f4..69ee808 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1339,7 +1339,7 @@ void drbd_send_ack_dp(struct drbd_peer_device *peer_device, enum drbd_packet cmd
struct p_data *dp, int data_size)
{
if (peer_device->connection->peer_integrity_tfm)
- data_size -= crypto_hash_digestsize(peer_device->connection->peer_integrity_tfm);
+ data_size -= crypto_ahash_digestsize(peer_device->connection->peer_integrity_tfm);
_drbd_send_ack(peer_device, cmd, dp->sector, cpu_to_be32(data_size),
dp->block_id);
}
@@ -1628,7 +1628,7 @@ int drbd_send_dblock(struct drbd_peer_device *peer_device, struct drbd_request *
sock = &peer_device->connection->data;
p = drbd_prepare_command(peer_device, sock);
digest_size = peer_device->connection->integrity_tfm ?
- crypto_hash_digestsize(peer_device->connection->integrity_tfm) : 0;
+ crypto_ahash_digestsize(peer_device->connection->integrity_tfm) : 0;

if (!p)
return -EIO;
@@ -1717,7 +1717,7 @@ int drbd_send_block(struct drbd_peer_device *peer_device, enum drbd_packet cmd,
p = drbd_prepare_command(peer_device, sock);

digest_size = peer_device->connection->integrity_tfm ?
- crypto_hash_digestsize(peer_device->connection->integrity_tfm) : 0;
+ crypto_ahash_digestsize(peer_device->connection->integrity_tfm) : 0;

if (!p)
return -EIO;
@@ -2506,11 +2506,11 @@ void conn_free_crypto(struct drbd_connection *connection)
{
drbd_free_sock(connection);

- crypto_free_hash(connection->csums_tfm);
- crypto_free_hash(connection->verify_tfm);
- crypto_free_hash(connection->cram_hmac_tfm);
- crypto_free_hash(connection->integrity_tfm);
- crypto_free_hash(connection->peer_integrity_tfm);
+ crypto_free_ahash(connection->csums_tfm);
+ crypto_free_ahash(connection->verify_tfm);
+ crypto_free_shash(connection->cram_hmac_tfm);
+ crypto_free_ahash(connection->integrity_tfm);
+ crypto_free_ahash(connection->peer_integrity_tfm);
kfree(connection->int_dig_in);
kfree(connection->int_dig_vv);

diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index e80cbef..578f635 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -2065,19 +2065,34 @@ check_net_options(struct drbd_connection *connection, struct net_conf *new_net_c
}

struct crypto {
- struct crypto_hash *verify_tfm;
- struct crypto_hash *csums_tfm;
- struct crypto_hash *cram_hmac_tfm;
- struct crypto_hash *integrity_tfm;
+ struct crypto_ahash *verify_tfm;
+ struct crypto_ahash *csums_tfm;
+ struct crypto_shash *cram_hmac_tfm;
+ struct crypto_ahash *integrity_tfm;
};

static int
-alloc_hash(struct crypto_hash **tfm, char *tfm_name, int err_alg)
+alloc_shash(struct crypto_shash **tfm, char *tfm_name, int err_alg)
{
if (!tfm_name[0])
return NO_ERROR;

- *tfm = crypto_alloc_hash(tfm_name, 0, CRYPTO_ALG_ASYNC);
+ *tfm = crypto_alloc_shash(tfm_name, 0, 0);
+ if (IS_ERR(*tfm)) {
+ *tfm = NULL;
+ return err_alg;
+ }
+
+ return NO_ERROR;
+}
+
+static int
+alloc_ahash(struct crypto_ahash **tfm, char *tfm_name, int err_alg)
+{
+ if (!tfm_name[0])
+ return NO_ERROR;
+
+ *tfm = crypto_alloc_ahash(tfm_name, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(*tfm)) {
*tfm = NULL;
return err_alg;
@@ -2092,24 +2107,24 @@ alloc_crypto(struct crypto *crypto, struct net_conf *new_net_conf)
char hmac_name[CRYPTO_MAX_ALG_NAME];
enum drbd_ret_code rv;

- rv = alloc_hash(&crypto->csums_tfm, new_net_conf->csums_alg,
- ERR_CSUMS_ALG);
+ rv = alloc_ahash(&crypto->csums_tfm, new_net_conf->csums_alg,
+ ERR_CSUMS_ALG);
if (rv != NO_ERROR)
return rv;
- rv = alloc_hash(&crypto->verify_tfm, new_net_conf->verify_alg,
- ERR_VERIFY_ALG);
+ rv = alloc_ahash(&crypto->verify_tfm, new_net_conf->verify_alg,
+ ERR_VERIFY_ALG);
if (rv != NO_ERROR)
return rv;
- rv = alloc_hash(&crypto->integrity_tfm, new_net_conf->integrity_alg,
- ERR_INTEGRITY_ALG);
+ rv = alloc_ahash(&crypto->integrity_tfm, new_net_conf->integrity_alg,
+ ERR_INTEGRITY_ALG);
if (rv != NO_ERROR)
return rv;
if (new_net_conf->cram_hmac_alg[0] != 0) {
snprintf(hmac_name, CRYPTO_MAX_ALG_NAME, "hmac(%s)",
new_net_conf->cram_hmac_alg);

- rv = alloc_hash(&crypto->cram_hmac_tfm, hmac_name,
- ERR_AUTH_ALG);
+ rv = alloc_shash(&crypto->cram_hmac_tfm, hmac_name,
+ ERR_AUTH_ALG);
}

return rv;
@@ -2117,10 +2132,10 @@ alloc_crypto(struct crypto *crypto, struct net_conf *new_net_conf)

static void free_crypto(struct crypto *crypto)
{
- crypto_free_hash(crypto->cram_hmac_tfm);
- crypto_free_hash(crypto->integrity_tfm);
- crypto_free_hash(crypto->csums_tfm);
- crypto_free_hash(crypto->verify_tfm);
+ crypto_free_shash(crypto->cram_hmac_tfm);
+ crypto_free_ahash(crypto->integrity_tfm);
+ crypto_free_ahash(crypto->csums_tfm);
+ crypto_free_ahash(crypto->verify_tfm);
}

int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
@@ -2197,23 +2212,23 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
rcu_assign_pointer(connection->net_conf, new_net_conf);

if (!rsr) {
- crypto_free_hash(connection->csums_tfm);
+ crypto_free_ahash(connection->csums_tfm);
connection->csums_tfm = crypto.csums_tfm;
crypto.csums_tfm = NULL;
}
if (!ovr) {
- crypto_free_hash(connection->verify_tfm);
+ crypto_free_ahash(connection->verify_tfm);
connection->verify_tfm = crypto.verify_tfm;
crypto.verify_tfm = NULL;
}

- crypto_free_hash(connection->integrity_tfm);
+ crypto_free_ahash(connection->integrity_tfm);
connection->integrity_tfm = crypto.integrity_tfm;
if (connection->cstate >= C_WF_REPORT_PARAMS && connection->agreed_pro_version >= 100)
/* Do this without trying to take connection->data.mutex again. */
__drbd_send_protocol(connection, P_PROTOCOL_UPDATE);

- crypto_free_hash(connection->cram_hmac_tfm);
+ crypto_free_shash(connection->cram_hmac_tfm);
connection->cram_hmac_tfm = crypto.cram_hmac_tfm;

mutex_unlock(&connection->resource->conf_update);
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index b4b5680..d1f8559 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -1601,7 +1601,7 @@ read_in_block(struct drbd_peer_device *peer_device, u64 id, sector_t sector,

digest_size = 0;
if (!trim && peer_device->connection->peer_integrity_tfm) {
- digest_size = crypto_hash_digestsize(peer_device->connection->peer_integrity_tfm);
+ digest_size = crypto_ahash_digestsize(peer_device->connection->peer_integrity_tfm);
/*
* FIXME: Receive the incoming digest into the receive buffer
* here, together with its struct p_data?
@@ -1715,7 +1715,7 @@ static int recv_dless_read(struct drbd_peer_device *peer_device, struct drbd_req

digest_size = 0;
if (peer_device->connection->peer_integrity_tfm) {
- digest_size = crypto_hash_digestsize(peer_device->connection->peer_integrity_tfm);
+ digest_size = crypto_ahash_digestsize(peer_device->connection->peer_integrity_tfm);
err = drbd_recv_all_warn(peer_device->connection, dig_in, digest_size);
if (err)
return err;
@@ -3295,7 +3295,7 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
int p_proto, p_discard_my_data, p_two_primaries, cf;
struct net_conf *nc, *old_net_conf, *new_net_conf = NULL;
char integrity_alg[SHARED_SECRET_MAX] = "";
- struct crypto_hash *peer_integrity_tfm = NULL;
+ struct crypto_ahash *peer_integrity_tfm = NULL;
void *int_dig_in = NULL, *int_dig_vv = NULL;

p_proto = be32_to_cpu(p->protocol);
@@ -3376,14 +3376,14 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
* change.
*/

- peer_integrity_tfm = crypto_alloc_hash(integrity_alg, 0, CRYPTO_ALG_ASYNC);
+ peer_integrity_tfm = crypto_alloc_ahash(integrity_alg, 0, CRYPTO_ALG_ASYNC);
if (!peer_integrity_tfm) {
drbd_err(connection, "peer data-integrity-alg %s not supported\n",
integrity_alg);
goto disconnect;
}

- hash_size = crypto_hash_digestsize(peer_integrity_tfm);
+ hash_size = crypto_ahash_digestsize(peer_integrity_tfm);
int_dig_in = kmalloc(hash_size, GFP_KERNEL);
int_dig_vv = kmalloc(hash_size, GFP_KERNEL);
if (!(int_dig_in && int_dig_vv)) {
@@ -3413,7 +3413,7 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
mutex_unlock(&connection->resource->conf_update);
mutex_unlock(&connection->data.mutex);

- crypto_free_hash(connection->peer_integrity_tfm);
+ crypto_free_ahash(connection->peer_integrity_tfm);
kfree(connection->int_dig_in);
kfree(connection->int_dig_vv);
connection->peer_integrity_tfm = peer_integrity_tfm;
@@ -3431,7 +3431,7 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
disconnect_rcu_unlock:
rcu_read_unlock();
disconnect:
- crypto_free_hash(peer_integrity_tfm);
+ crypto_free_ahash(peer_integrity_tfm);
kfree(int_dig_in);
kfree(int_dig_vv);
conn_request_state(connection, NS(conn, C_DISCONNECTING), CS_HARD);
@@ -3443,15 +3443,15 @@ disconnect:
* return: NULL (alg name was "")
* ERR_PTR(error) if something goes wrong
* or the crypto hash ptr, if it worked out ok. */
-static struct crypto_hash *drbd_crypto_alloc_digest_safe(const struct drbd_device *device,
+static struct crypto_ahash *drbd_crypto_alloc_digest_safe(const struct drbd_device *device,
const char *alg, const char *name)
{
- struct crypto_hash *tfm;
+ struct crypto_ahash *tfm;

if (!alg[0])
return NULL;

- tfm = crypto_alloc_hash(alg, 0, CRYPTO_ALG_ASYNC);
+ tfm = crypto_alloc_ahash(alg, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm)) {
drbd_err(device, "Can not allocate \"%s\" as %s (reason: %ld)\n",
alg, name, PTR_ERR(tfm));
@@ -3504,8 +3504,8 @@ static int receive_SyncParam(struct drbd_connection *connection, struct packet_i
struct drbd_device *device;
struct p_rs_param_95 *p;
unsigned int header_size, data_size, exp_max_sz;
- struct crypto_hash *verify_tfm = NULL;
- struct crypto_hash *csums_tfm = NULL;
+ struct crypto_ahash *verify_tfm = NULL;
+ struct crypto_ahash *csums_tfm = NULL;
struct net_conf *old_net_conf, *new_net_conf = NULL;
struct disk_conf *old_disk_conf = NULL, *new_disk_conf = NULL;
const int apv = connection->agreed_pro_version;
@@ -3652,14 +3652,14 @@ static int receive_SyncParam(struct drbd_connection *connection, struct packet_i
if (verify_tfm) {
strcpy(new_net_conf->verify_alg, p->verify_alg);
new_net_conf->verify_alg_len = strlen(p->verify_alg) + 1;
- crypto_free_hash(peer_device->connection->verify_tfm);
+ crypto_free_ahash(peer_device->connection->verify_tfm);
peer_device->connection->verify_tfm = verify_tfm;
drbd_info(device, "using verify-alg: \"%s\"\n", p->verify_alg);
}
if (csums_tfm) {
strcpy(new_net_conf->csums_alg, p->csums_alg);
new_net_conf->csums_alg_len = strlen(p->csums_alg) + 1;
- crypto_free_hash(peer_device->connection->csums_tfm);
+ crypto_free_ahash(peer_device->connection->csums_tfm);
peer_device->connection->csums_tfm = csums_tfm;
drbd_info(device, "using csums-alg: \"%s\"\n", p->csums_alg);
}
@@ -3703,9 +3703,9 @@ disconnect:
mutex_unlock(&connection->resource->conf_update);
/* just for completeness: actually not needed,
* as this is not reached if csums_tfm was ok. */
- crypto_free_hash(csums_tfm);
+ crypto_free_ahash(csums_tfm);
/* but free the verify_tfm again, if csums_tfm did not work out */
- crypto_free_hash(verify_tfm);
+ crypto_free_ahash(verify_tfm);
conn_request_state(peer_device->connection, NS(conn, C_DISCONNECTING), CS_HARD);
return -EIO;
}
@@ -4895,14 +4895,13 @@ static int drbd_do_auth(struct drbd_connection *connection)
{
struct drbd_socket *sock;
char my_challenge[CHALLENGE_LEN]; /* 64 Bytes... */
- struct scatterlist sg;
char *response = NULL;
char *right_response = NULL;
char *peers_ch = NULL;
unsigned int key_len;
char secret[SHARED_SECRET_MAX]; /* 64 byte */
unsigned int resp_size;
- struct hash_desc desc;
+ SHASH_DESC_ON_STACK(desc, connection->cram_hmac_tfm);
struct packet_info pi;
struct net_conf *nc;
int err, rv;
@@ -4915,12 +4914,12 @@ static int drbd_do_auth(struct drbd_connection *connection)
memcpy(secret, nc->shared_secret, key_len);
rcu_read_unlock();

- desc.tfm = connection->cram_hmac_tfm;
- desc.flags = 0;
+ desc->tfm = connection->cram_hmac_tfm;
+ desc->flags = 0;

- rv = crypto_hash_setkey(connection->cram_hmac_tfm, (u8 *)secret, key_len);
+ rv = crypto_shash_setkey(connection->cram_hmac_tfm, (u8 *)secret, key_len);
if (rv) {
- drbd_err(connection, "crypto_hash_setkey() failed with %d\n", rv);
+ drbd_err(connection, "crypto_shash_setkey() failed with %d\n", rv);
rv = -1;
goto fail;
}
@@ -4981,7 +4980,7 @@ static int drbd_do_auth(struct drbd_connection *connection)
goto fail;
}

- resp_size = crypto_hash_digestsize(connection->cram_hmac_tfm);
+ resp_size = crypto_shash_digestsize(connection->cram_hmac_tfm);
response = kmalloc(resp_size, GFP_NOIO);
if (response == NULL) {
drbd_err(connection, "kmalloc of response failed\n");
@@ -4989,10 +4988,7 @@ static int drbd_do_auth(struct drbd_connection *connection)
goto fail;
}

- sg_init_table(&sg, 1);
- sg_set_buf(&sg, peers_ch, pi.size);
-
- rv = crypto_hash_digest(&desc, &sg, sg.length, response);
+ rv = crypto_shash_digest(desc, peers_ch, pi.size, response);
if (rv) {
drbd_err(connection, "crypto_hash_digest() failed with %d\n", rv);
rv = -1;
@@ -5040,9 +5036,8 @@ static int drbd_do_auth(struct drbd_connection *connection)
goto fail;
}

- sg_set_buf(&sg, my_challenge, CHALLENGE_LEN);
-
- rv = crypto_hash_digest(&desc, &sg, sg.length, right_response);
+ rv = crypto_shash_digest(desc, my_challenge, CHALLENGE_LEN,
+ right_response);
if (rv) {
drbd_err(connection, "crypto_hash_digest() failed with %d\n", rv);
rv = -1;
@@ -5061,6 +5056,7 @@ static int drbd_do_auth(struct drbd_connection *connection)
kfree(peers_ch);
kfree(response);
kfree(right_response);
+ shash_desc_zero(desc);

return rv;
}
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index 5578c14..426d4fc 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -269,51 +269,56 @@ void drbd_request_endio(struct bio *bio)
complete_master_bio(device, &m);
}

-void drbd_csum_ee(struct crypto_hash *tfm, struct drbd_peer_request *peer_req, void *digest)
+void drbd_csum_ee(struct crypto_ahash *tfm, struct drbd_peer_request *peer_req, void *digest)
{
- struct hash_desc desc;
+ AHASH_REQUEST_ON_STACK(req, tfm);
struct scatterlist sg;
struct page *page = peer_req->pages;
struct page *tmp;
unsigned len;

- desc.tfm = tfm;
- desc.flags = 0;
+ ahash_request_set_tfm(req, tfm);
+ ahash_request_set_callback(req, 0, NULL, NULL);

sg_init_table(&sg, 1);
- crypto_hash_init(&desc);
+ crypto_ahash_init(req);

while ((tmp = page_chain_next(page))) {
/* all but the last page will be fully used */
sg_set_page(&sg, page, PAGE_SIZE, 0);
- crypto_hash_update(&desc, &sg, sg.length);
+ ahash_request_set_crypt(req, &sg, NULL, sg.length);
+ crypto_ahash_update(req);
page = tmp;
}
/* and now the last, possibly only partially used page */
len = peer_req->i.size & (PAGE_SIZE - 1);
sg_set_page(&sg, page, len ?: PAGE_SIZE, 0);
- crypto_hash_update(&desc, &sg, sg.length);
- crypto_hash_final(&desc, digest);
+ ahash_request_set_crypt(req, &sg, digest, sg.length);
+ crypto_ahash_finup(req);
+ ahash_request_zero(req);
}

-void drbd_csum_bio(struct crypto_hash *tfm, struct bio *bio, void *digest)
+void drbd_csum_bio(struct crypto_ahash *tfm, struct bio *bio, void *digest)
{
- struct hash_desc desc;
+ AHASH_REQUEST_ON_STACK(req, tfm);
struct scatterlist sg;
struct bio_vec bvec;
struct bvec_iter iter;

- desc.tfm = tfm;
- desc.flags = 0;
+ ahash_request_set_tfm(req, tfm);
+ ahash_request_set_callback(req, 0, NULL, NULL);

sg_init_table(&sg, 1);
- crypto_hash_init(&desc);
+ crypto_ahash_init(req);

bio_for_each_segment(bvec, bio, iter) {
sg_set_page(&sg, bvec.bv_page, bvec.bv_len, bvec.bv_offset);
- crypto_hash_update(&desc, &sg, sg.length);
+ ahash_request_set_crypt(req, &sg, NULL, sg.length);
+ crypto_ahash_update(req);
}
- crypto_hash_final(&desc, digest);
+ ahash_request_set_crypt(req, NULL, digest, 0);
+ crypto_ahash_final(req);
+ ahash_request_zero(req);
}

/* MAYBE merge common code with w_e_end_ov_req */
@@ -332,7 +337,7 @@ static int w_e_send_csum(struct drbd_work *w, int cancel)
if (unlikely((peer_req->flags & EE_WAS_ERROR) != 0))
goto out;

- digest_size = crypto_hash_digestsize(peer_device->connection->csums_tfm);
+ digest_size = crypto_ahash_digestsize(peer_device->connection->csums_tfm);
digest = kmalloc(digest_size, GFP_NOIO);
if (digest) {
sector_t sector = peer_req->i.sector;
@@ -1108,7 +1113,7 @@ int w_e_end_csum_rs_req(struct drbd_work *w, int cancel)
* a real fix would be much more involved,
* introducing more locking mechanisms */
if (peer_device->connection->csums_tfm) {
- digest_size = crypto_hash_digestsize(peer_device->connection->csums_tfm);
+ digest_size = crypto_ahash_digestsize(peer_device->connection->csums_tfm);
D_ASSERT(device, digest_size == di->digest_size);
digest = kmalloc(digest_size, GFP_NOIO);
}
@@ -1158,7 +1163,7 @@ int w_e_end_ov_req(struct drbd_work *w, int cancel)
if (unlikely(cancel))
goto out;

- digest_size = crypto_hash_digestsize(peer_device->connection->verify_tfm);
+ digest_size = crypto_ahash_digestsize(peer_device->connection->verify_tfm);
digest = kmalloc(digest_size, GFP_NOIO);
if (!digest) {
err = 1; /* terminate the connection in case the allocation failed */
@@ -1230,7 +1235,7 @@ int w_e_end_ov_reply(struct drbd_work *w, int cancel)
di = peer_req->digest;

if (likely((peer_req->flags & EE_WAS_ERROR) == 0)) {
- digest_size = crypto_hash_digestsize(peer_device->connection->verify_tfm);
+ digest_size = crypto_ahash_digestsize(peer_device->connection->verify_tfm);
digest = kmalloc(digest_size, GFP_NOIO);
if (digest) {
drbd_csum_ee(peer_device->connection->verify_tfm, peer_req, digest);