diff options
| author | Steve French <stfrench@microsoft.com> | 2019-09-08 23:22:02 -0500 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2019-09-16 11:43:38 -0500 |
| commit | 563317ec3083f7e126d7e30821ff8505ac338ee5 (patch) | |
| tree | 1861eea90a780a694310c2d6a1551400333cdee1 /fs/cifs/smb2ops.c | |
| parent | 35cf94a397280b9e27576ac1480f631bdd3e7b70 (diff) | |
smb3: enable offload of decryption of large reads via mount option
Disable offload of the decryption of encrypted read responses
by default (equivalent to setting this new mount option "esize=0").
Allow setting the minimum encrypted read response size that we
will choose to offload to a worker thread - it is now configurable
via on a new mount option "esize="
Depending on which encryption mechanism (GCM vs. CCM) and
the number of reads that will be issued in parallel and the
performance of the network and CPU on the client, it may make
sense to enable this since it can provide substantial benefit when
multiple large reads are in flight at the same time.
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Diffstat (limited to 'fs/cifs/smb2ops.c')
| -rw-r--r-- | fs/cifs/smb2ops.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index c74284484947..1cfb8d518132 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -4121,8 +4121,8 @@ receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid, * use more cores decrypting which can be expensive */ - /* TODO: make the size limit to enable decrypt offload configurable */ - if (server->pdu_size > (512 * 1024)) { + if ((server->min_offload) && + (server->pdu_size >= server->min_offload)) { dw = kmalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL); if (dw == NULL) goto non_offloaded_decrypt; |