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authorPavel Shilovsky <pshilovsky@samba.org>2014-06-05 19:03:27 +0400
committerSteve French <smfrench@gmail.com>2014-08-02 10:23:03 +0400
commitcb7e9eabb2b584884db0d11ae0376d31ac1cfdc1 (patch)
tree4f6fd78f74b173359dd673b8bf49b8f188aab0be /fs/cifs/smb2transport.c
parent6ec0b01b2691d1465bb7219e031e8bf38ccd9397 (diff)
downloadlinux-cb7e9eabb2b584884db0d11ae0376d31ac1cfdc1.tar.xz
CIFS: Use multicredits for SMB 2.1/3 writes
If we negotiate SMB 2.1 and higher version of the protocol and a server supports large write buffer size, we need to consume 1 credit per 65536 bytes. So, we need to know how many credits we have and obtain the required number of them before constructing a writedata structure in writepages and iovec write. Reviewed-by: Shirish Pargaonkar <spargaonkar@suse.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/smb2transport.c')
-rw-r--r--fs/cifs/smb2transport.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c
index 59c748ce872f..5111e7272db6 100644
--- a/fs/cifs/smb2transport.c
+++ b/fs/cifs/smb2transport.c
@@ -466,7 +466,12 @@ smb2_verify_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
static inline void
smb2_seq_num_into_buf(struct TCP_Server_Info *server, struct smb2_hdr *hdr)
{
+ unsigned int i, num = le16_to_cpu(hdr->CreditCharge);
+
hdr->MessageId = get_next_mid64(server);
+ /* skip message numbers according to CreditCharge field */
+ for (i = 1; i < num; i++)
+ get_next_mid(server);
}
static struct mid_q_entry *