From 2b2f7548076200b69ee377b4bb4f426696502b04 Mon Sep 17 00:00:00 2001 From: Steve French Date: Fri, 7 Jun 2019 15:16:10 -0500 Subject: SMB3.1.1: Add GCM crypto to the encrypt and decrypt functions SMB3.1.1 GCM performs much better than the older CCM default: more than twice as fast in the write patch (copy to the Samba server on localhost for example) and 80% faster on the read patch (copy from the server). Signed-off-by: Steve French Reviewed-by: Ronnie Sahlberg Reviewed-by: Pavel Shilovsky --- fs/cifs/smb2transport.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'fs/cifs/smb2transport.c') diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c index d1181572758b..1ccbcf9c2c3b 100644 --- a/fs/cifs/smb2transport.c +++ b/fs/cifs/smb2transport.c @@ -734,7 +734,10 @@ smb3_crypto_aead_allocate(struct TCP_Server_Info *server) struct crypto_aead *tfm; if (!server->secmech.ccmaesencrypt) { - tfm = crypto_alloc_aead("ccm(aes)", 0, 0); + if (server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) + tfm = crypto_alloc_aead("gcm(aes)", 0, 0); + else + tfm = crypto_alloc_aead("ccm(aes)", 0, 0); if (IS_ERR(tfm)) { cifs_dbg(VFS, "%s: Failed to alloc encrypt aead\n", __func__); @@ -744,7 +747,10 @@ smb3_crypto_aead_allocate(struct TCP_Server_Info *server) } if (!server->secmech.ccmaesdecrypt) { - tfm = crypto_alloc_aead("ccm(aes)", 0, 0); + if (server->cipher_type == SMB2_ENCRYPTION_AES128_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; -- cgit v1.2.3