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authorGilad Ben-Yossef <gilad@benyossef.com>2020-03-08 16:57:08 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2020-03-12 13:00:16 +0100
commitb66c1876a756d074965d87c026ca19ff2277280f (patch)
tree3ac528649a7eba0ca9d1405dfdd23da76137fb51 /drivers/crypto/ccree
parentcrypto: ccree - only check condition if needed (diff)
downloadlinux-b66c1876a756d074965d87c026ca19ff2277280f.tar.xz
linux-b66c1876a756d074965d87c026ca19ff2277280f.zip
crypto: ccree - use crypto_ipsec_check_assoclen()
Use crypto_ipsec_check_assoclen() instead of home grown functions. Clean up some unneeded code as a result. Delete stale comments while we're at it. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/ccree')
-rw-r--r--drivers/crypto/ccree/cc_aead.c73
1 files changed, 20 insertions, 53 deletions
diff --git a/drivers/crypto/ccree/cc_aead.c b/drivers/crypto/ccree/cc_aead.c
index cce103e3b822..ede16e37d453 100644
--- a/drivers/crypto/ccree/cc_aead.c
+++ b/drivers/crypto/ccree/cc_aead.c
@@ -6,6 +6,8 @@
#include <crypto/algapi.h>
#include <crypto/internal/aead.h>
#include <crypto/authenc.h>
+#include <crypto/gcm.h>
+#include <linux/rtnetlink.h>
#include <crypto/internal/des.h>
#include <linux/rtnetlink.h>
#include "cc_driver.h"
@@ -60,11 +62,6 @@ struct cc_aead_ctx {
enum drv_hash_mode auth_mode;
};
-static inline bool valid_assoclen(struct aead_request *req)
-{
- return ((req->assoclen == 16) || (req->assoclen == 20));
-}
-
static void cc_aead_exit(struct crypto_aead *tfm)
{
struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
@@ -2050,15 +2047,11 @@ static int cc_rfc4309_ccm_encrypt(struct aead_request *req)
/* Very similar to cc_aead_encrypt() above. */
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
- struct crypto_aead *tfm = crypto_aead_reqtfm(req);
- struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
- struct device *dev = drvdata_to_dev(ctx->drvdata);
- int rc = -EINVAL;
+ int rc;
- if (!valid_assoclen(req)) {
- dev_dbg(dev, "invalid Assoclen:%u\n", req->assoclen);
+ rc = crypto_ipsec_check_assoclen(req->assoclen);
+ if (rc)
goto out;
- }
memset(areq_ctx, 0, sizeof(*areq_ctx));
@@ -2099,16 +2092,12 @@ static int cc_aead_decrypt(struct aead_request *req)
static int cc_rfc4309_ccm_decrypt(struct aead_request *req)
{
- struct crypto_aead *tfm = crypto_aead_reqtfm(req);
- struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
- struct device *dev = drvdata_to_dev(ctx->drvdata);
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
- int rc = -EINVAL;
+ int rc;
- if (!valid_assoclen(req)) {
- dev_dbg(dev, "invalid Assoclen:%u\n", req->assoclen);
+ rc = crypto_ipsec_check_assoclen(req->assoclen);
+ if (rc)
goto out;
- }
memset(areq_ctx, 0, sizeof(*areq_ctx));
@@ -2216,18 +2205,12 @@ static int cc_rfc4543_gcm_setauthsize(struct crypto_aead *authenc,
static int cc_rfc4106_gcm_encrypt(struct aead_request *req)
{
- /* Very similar to cc_aead_encrypt() above. */
-
- struct crypto_aead *tfm = crypto_aead_reqtfm(req);
- struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
- struct device *dev = drvdata_to_dev(ctx->drvdata);
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
- int rc = -EINVAL;
+ int rc;
- if (!valid_assoclen(req)) {
- dev_dbg(dev, "invalid Assoclen:%u\n", req->assoclen);
+ rc = crypto_ipsec_check_assoclen(req->assoclen);
+ if (rc)
goto out;
- }
memset(areq_ctx, 0, sizeof(*areq_ctx));
@@ -2248,17 +2231,12 @@ out:
static int cc_rfc4543_gcm_encrypt(struct aead_request *req)
{
- /* Very similar to cc_aead_encrypt() above. */
- struct crypto_aead *tfm = crypto_aead_reqtfm(req);
- struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
- struct device *dev = drvdata_to_dev(ctx->drvdata);
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
- int rc = -EINVAL;
+ int rc;
- if (!valid_assoclen(req)) {
- dev_dbg(dev, "invalid Assoclen:%u\n", req->assoclen);
+ rc = crypto_ipsec_check_assoclen(req->assoclen);
+ if (rc)
goto out;
- }
memset(areq_ctx, 0, sizeof(*areq_ctx));
@@ -2281,18 +2259,12 @@ out:
static int cc_rfc4106_gcm_decrypt(struct aead_request *req)
{
- /* Very similar to cc_aead_decrypt() above. */
-
- struct crypto_aead *tfm = crypto_aead_reqtfm(req);
- struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
- struct device *dev = drvdata_to_dev(ctx->drvdata);
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
- int rc = -EINVAL;
+ int rc;
- if (!valid_assoclen(req)) {
- dev_dbg(dev, "invalid Assoclen:%u\n", req->assoclen);
+ rc = crypto_ipsec_check_assoclen(req->assoclen);
+ if (rc)
goto out;
- }
memset(areq_ctx, 0, sizeof(*areq_ctx));
@@ -2313,17 +2285,12 @@ out:
static int cc_rfc4543_gcm_decrypt(struct aead_request *req)
{
- /* Very similar to cc_aead_decrypt() above. */
- struct crypto_aead *tfm = crypto_aead_reqtfm(req);
- struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
- struct device *dev = drvdata_to_dev(ctx->drvdata);
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
- int rc = -EINVAL;
+ int rc;
- if (!valid_assoclen(req)) {
- dev_dbg(dev, "invalid Assoclen:%u\n", req->assoclen);
+ rc = crypto_ipsec_check_assoclen(req->assoclen);
+ if (rc)
goto out;
- }
memset(areq_ctx, 0, sizeof(*areq_ctx));