[v3,1/8] smb3: rename encryption/decryption TFMs

Detach the TFM name from a specific algorithm (AES-CCM) as
AES-GCM is also supported, making the name misleading.

s/ccmaesencrypt/enc/
s/ccmaesdecrypt/dec/

Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de>
---
 fs/cifs/cifsencrypt.c   | 12 ++++++------
 fs/cifs/cifsglob.h      |  4 ++--
 fs/cifs/smb2ops.c       |  3 +--
 fs/cifs/smb2transport.c | 12 ++++++------
 4 files changed, 15 insertions(+), 16 deletions(-)

looks fine - merged into cifs-2.6.git for-next

still reviewing/testing others in the series.  Feedback on those would
be appreciated.

On Wed, Sep 28, 2022 at 8:57 PM Enzo Matsumiya <ematsumiya@suse.de> wrote:
>
> Detach the TFM name from a specific algorithm (AES-CCM) as
> AES-GCM is also supported, making the name misleading.
>
> s/ccmaesencrypt/enc/
> s/ccmaesdecrypt/dec/
>
> Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de>
> ---
>  fs/cifs/cifsencrypt.c   | 12 ++++++------
>  fs/cifs/cifsglob.h      |  4 ++--
>  fs/cifs/smb2ops.c       |  3 +--
>  fs/cifs/smb2transport.c | 12 ++++++------
>  4 files changed, 15 insertions(+), 16 deletions(-)
>
> diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
> index 46f5718754f9..f622d2ba6bd0 100644
> --- a/fs/cifs/cifsencrypt.c
> +++ b/fs/cifs/cifsencrypt.c
> @@ -743,14 +743,14 @@ cifs_crypto_secmech_release(struct TCP_Server_Info *server)
>                 server->secmech.hmacmd5 = NULL;
>         }
>
> -       if (server->secmech.ccmaesencrypt) {
> -               crypto_free_aead(server->secmech.ccmaesencrypt);
> -               server->secmech.ccmaesencrypt = NULL;
> +       if (server->secmech.enc) {
> +               crypto_free_aead(server->secmech.enc);
> +               server->secmech.enc = NULL;
>         }
>
> -       if (server->secmech.ccmaesdecrypt) {
> -               crypto_free_aead(server->secmech.ccmaesdecrypt);
> -               server->secmech.ccmaesdecrypt = NULL;
> +       if (server->secmech.dec) {
> +               crypto_free_aead(server->secmech.dec);
> +               server->secmech.dec = NULL;
>         }
>
>         kfree(server->secmech.sdesccmacaes);
> diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
> index ae7f571a7dba..cbb108b15412 100644
> --- a/fs/cifs/cifsglob.h
> +++ b/fs/cifs/cifsglob.h
> @@ -171,8 +171,8 @@ struct cifs_secmech {
>         struct sdesc *sdeschmacsha256;  /* ctxt to generate smb2 signature */
>         struct sdesc *sdesccmacaes;  /* ctxt to generate smb3 signature */
>         struct sdesc *sdescsha512; /* ctxt to generate smb3.11 signing key */
> -       struct crypto_aead *ccmaesencrypt; /* smb3 encryption aead */
> -       struct crypto_aead *ccmaesdecrypt; /* smb3 decryption aead */
> +       struct crypto_aead *enc; /* smb3 AEAD encryption TFM (AES-CCM and AES-GCM) */
> +       struct crypto_aead *dec; /* smb3 AEAD decryption TFM (AES-CCM and AES-GCM) */
>  };
>
>  /* per smb session structure/fields */
> diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
> index 421be43af425..d1528755f330 100644
> --- a/fs/cifs/smb2ops.c
> +++ b/fs/cifs/smb2ops.c
> @@ -4344,8 +4344,7 @@ crypt_message(struct TCP_Server_Info *server, int num_rqst,
>                 return rc;
>         }
>
> -       tfm = enc ? server->secmech.ccmaesencrypt :
> -                                               server->secmech.ccmaesdecrypt;
> +       tfm = enc ? server->secmech.enc : server->secmech.dec;
>
>         if ((server->cipher_type == SMB2_ENCRYPTION_AES256_CCM) ||
>                 (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
> diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c
> index 4640fc4a8b13..d4e1a5d74dcd 100644
> --- a/fs/cifs/smb2transport.c
> +++ b/fs/cifs/smb2transport.c
> @@ -904,7 +904,7 @@ smb3_crypto_aead_allocate(struct TCP_Server_Info *server)
>  {
>         struct crypto_aead *tfm;
>
> -       if (!server->secmech.ccmaesencrypt) {
> +       if (!server->secmech.enc) {
>                 if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
>                     (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
>                         tfm = crypto_alloc_aead("gcm(aes)", 0, 0);
> @@ -915,23 +915,23 @@ smb3_crypto_aead_allocate(struct TCP_Server_Info *server)
>                                  __func__);
>                         return PTR_ERR(tfm);
>                 }
> -               server->secmech.ccmaesencrypt = tfm;
> +               server->secmech.enc = tfm;
>         }
>
> -       if (!server->secmech.ccmaesdecrypt) {
> +       if (!server->secmech.dec) {
>                 if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
>                     (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
>                         tfm = crypto_alloc_aead("gcm(aes)", 0, 0);
>                 else
>                         tfm = crypto_alloc_aead("ccm(aes)", 0, 0);
>                 if (IS_ERR(tfm)) {
> -                       crypto_free_aead(server->secmech.ccmaesencrypt);
> -                       server->secmech.ccmaesencrypt = NULL;
> +                       crypto_free_aead(server->secmech.enc);
> +                       server->secmech.enc = NULL;
>                         cifs_server_dbg(VFS, "%s: Failed to alloc decrypt aead\n",
>                                  __func__);
>                         return PTR_ERR(tfm);
>                 }
> -               server->secmech.ccmaesdecrypt = tfm;
> +               server->secmech.dec = tfm;
>         }
>
>         return 0;
> --
> 2.35.3
>