IB/hfi1: Define 16B Management Packets

Add 16B Management Packet definition. This optimized packet
format replaces the ib_other_headers and BTH with a source
and destination QP number.

To support these packets we introduce struct opa_16b_mgmt
into the struct hfi1_16b_header.

This packet format is only used for MAD packets using the
IB_OPCODE_UD_SEND_ONLY opcode on QP0/1.

The original 16B implementation failed to use 16B management
packets so now we add their definition.

Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/hfi1/verbs.h b/drivers/infiniband/hw/hfi1/verbs.h
index a16fe5d3f7c4..a4d06502f06d 100644
--- a/drivers/infiniband/hw/hfi1/verbs.h
+++ b/drivers/infiniband/hw/hfi1/verbs.h
@@ -110,6 +110,12 @@ enum {
 #define LRH_9B_BYTES (FIELD_SIZEOF(struct ib_header, lrh))
 #define LRH_9B_DWORDS (LRH_9B_BYTES / sizeof(u32))
 
+/* 24Bits for qpn, upper 8Bits reserved */
+struct opa_16b_mgmt {
+	__be32 dest_qpn;
+	__be32 src_qpn;
+};
+
 struct hfi1_16b_header {
 	u32 lrh[4];
 	union {
@@ -118,6 +124,7 @@ struct hfi1_16b_header {
 			struct ib_other_headers oth;
 		} l;
 		struct ib_other_headers oth;
+		struct opa_16b_mgmt mgmt;
 	} u;
 } __packed;