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

This patch adds a function to receive TID RDMA WRITE DATA packet,
which is in the KDETH PSN space in packet ordering. Due to the use
of header suppression, software is generally only notified when
the last data packet for a segment is received. This patch also
adds code to handle KDETH EFLAGS errors for ingress TID RDMA WRITE
DATA packets.

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>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/hfi1/verbs.h b/drivers/infiniband/hw/hfi1/verbs.h
index b2096c7c1132..eec6e822635b 100644
--- a/drivers/infiniband/hw/hfi1/verbs.h
+++ b/drivers/infiniband/hw/hfi1/verbs.h
@@ -174,6 +174,8 @@ struct hfi1_qp_priv {
 
 	/* variables for the TID RDMA SE state machine */
 	u8 rnr_nak_state;       /* RNR NAK state */
+	u8 s_nak_state;
+	u32 s_nak_psn;
 	u32 s_flags;
 	u32 s_tid_cur;
 	u32 s_tid_head;
@@ -193,6 +195,7 @@ struct hfi1_qp_priv {
 	u16 pkts_ps;            /* packets per segment */
 	u8 timeout_shift;       /* account for number of packets per segment */
 
+	u32 r_next_psn_kdeth;
 	u8 sync_pt;           /* Set when QP reaches sync point */
 };