IB/hfi1: Add a function to receive TID RDMA WRITE response

This patch adds a function to receive TID RDMA WRITE response.
The TID entries will be stored for encoding TID RDMA WRITE DATA
packet later.

Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/hfi1/verbs.h

@@ -175,6 +175,9 @@ struct hfi1_qp_priv {
 	/* variables for the TID RDMA SE state machine */
 	u8 rnr_nak_state;       /* RNR NAK state */
 	u32 s_flags;
+	u32 s_tid_cur;
+	u32 s_tid_head;
+	u32 s_tid_tail;
 	u32 r_tid_head;     /* Most recently added TID RDMA request */
 	u32 r_tid_tail;     /* the last completed TID RDMA request */
 	u32 r_tid_ack;      /* the TID RDMA request to be ACK'ed */