diff mbox

[for-next,v2,1/3] IB/hfi1: Define 16B Management Packets

Message ID 20180516012803.8996.81947.stgit@scvm10.sc.intel.com (mailing list archive)
State Accepted
Delegated to: Doug Ledford
Headers show

Commit Message

Dennis Dalessandro May 16, 2018, 1:28 a.m. UTC 
From: Don Hiatt <don.hiatt@intel.com>

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>
---
 drivers/infiniband/hw/hfi1/hfi.h   |    1 +
 drivers/infiniband/hw/hfi1/verbs.h |    7 +++++++
 2 files changed, 8 insertions(+), 0 deletions(-)


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diff mbox

Patch

diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h
index dd84238..531ac89 100644
--- a/drivers/infiniband/hw/hfi1/hfi.h
+++ b/drivers/infiniband/hw/hfi1/hfi.h
@@ -392,6 +392,7 @@  struct hfi1_packet {
  */
 #define OPA_16B_L4_9B		0x00
 #define OPA_16B_L2_TYPE		0x02
+#define OPA_16B_L4_FM		0x08
 #define OPA_16B_L4_IB_LOCAL	0x09
 #define OPA_16B_L4_IB_GLOBAL	0x0A
 #define OPA_16B_L4_ETHR		OPA_VNIC_L4_ETHR
diff --git a/drivers/infiniband/hw/hfi1/verbs.h b/drivers/infiniband/hw/hfi1/verbs.h
index a16fe5d..a4d0650 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;