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Commit 4171a693 authored by Don Hiatt's avatar Don Hiatt Committed by Jason Gunthorpe
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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: default avatarIra Weiny <ira.weiny@intel.com>
Signed-off-by: default avatarDon Hiatt <don.hiatt@intel.com>
Signed-off-by: default avatarDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 013f64a8

drivers/infiniband/hw/hfi1/hfi.h

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/infiniband/hw/hfi1/verbs.h

+7 −0
Original line number Diff line number Diff line
@@ -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;