cifs: keep BCC in little-endian format
This is the same patch as originally posted, just with some merge
conflicts fixed up...
Currently, the ByteCount is usually converted to host-endian on receive.
This is confusing however, as we need to keep two sets of routines for
accessing it, and keep track of when to use each routine. Munging
received packets like this also limits when the signature can be
calulated.
Simplify the code by keeping the received ByteCount in little-endian
format. This allows us to eliminate a set of routines for accessing it
and we can now drop the *_le suffixes from the accessor functions since
that's now implied.
While we're at it, switch all of the places that read the ByteCount
directly to use the get_bcc inline which should also clean up some
unaligned accesses.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 19df0e5..f2513fb 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -484,7 +484,7 @@
in_buf->smb_buf_length = cpu_to_be32(sizeof(struct smb_hdr) - 4 + 2);
in_buf->Command = SMB_COM_NT_CANCEL;
in_buf->WordCount = 0;
- put_bcc_le(0, in_buf);
+ put_bcc(0, in_buf);
mutex_lock(&server->srv_mutex);
rc = cifs_sign_smb(in_buf, server, &mid->sequence_number);
@@ -644,11 +644,6 @@
rc = map_smb_to_linux_error(midQ->resp_buf,
flags & CIFS_LOG_ERROR);
- /* convert ByteCount if necessary */
- if (receive_len >= sizeof(struct smb_hdr) - 4
- /* do not count RFC1001 header */ +
- (2 * midQ->resp_buf->WordCount) + 2 /* bcc */ )
- put_bcc(get_bcc_le(midQ->resp_buf), midQ->resp_buf);
if ((flags & CIFS_NO_RESP) == 0)
midQ->resp_buf = NULL; /* mark it so buf will
not be freed by
@@ -798,12 +793,6 @@
/* BB special case reconnect tid and uid here? */
rc = map_smb_to_linux_error(out_buf, 0 /* no log */ );
-
- /* convert ByteCount if necessary */
- if (receive_len >= sizeof(struct smb_hdr) - 4
- /* do not count RFC1001 header */ +
- (2 * out_buf->WordCount) + 2 /* bcc */ )
- put_bcc(get_bcc_le(midQ->resp_buf), midQ->resp_buf);
} else {
rc = -EIO;
cERROR(1, "Bad MID state?");
@@ -1012,12 +1001,6 @@
/* BB special case reconnect tid and uid here? */
rc = map_smb_to_linux_error(out_buf, 0 /* no log */ );
- /* convert ByteCount if necessary */
- if (receive_len >= sizeof(struct smb_hdr) - 4
- /* do not count RFC1001 header */ +
- (2 * out_buf->WordCount) + 2 /* bcc */ )
- put_bcc(get_bcc_le(out_buf), out_buf);
-
out:
delete_mid(midQ);
if (rstart && rc == -EACCES)