cifs: mangle existing header for SMB_COM_NT_CANCEL
The NT_CANCEL command looks just like the original command, except for a few small differences. The send_nt_cancel function however currently takes a tcon, which we don't have in SendReceive and SendReceive2. Instead of "respinning" the entire header for an NT_CANCEL, just mangle the existing header by replacing just the fields we need. This means we don't need a tcon and allows us to call it from other places. Reviewed-by: Pavel Shilovsky <piastryyy@gmail.com> Reviewed-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
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