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| author | Pavel Shilovsky <pshilovsky@samba.org> | 2014-06-05 19:03:27 +0400 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2014-08-02 01:23:03 -0500 |
| commit | cb7e9eabb2b584884db0d11ae0376d31ac1cfdc1 (patch) | |
| tree | 4f6fd78f74b173359dd673b8bf49b8f188aab0be /fs/cifs/smb2transport.c | |
| parent | 6ec0b01b2691d1465bb7219e031e8bf38ccd9397 (diff) | |
| download | lwn-cb7e9eabb2b584884db0d11ae0376d31ac1cfdc1.tar.gz lwn-cb7e9eabb2b584884db0d11ae0376d31ac1cfdc1.zip | |
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.c | 5 |
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 * |