[linux-2.6-block.git] / include / rdma / ib_hdrs.h

/*
 * Copyright(c) 2016 - 2018 Intel Corporation.
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * BSD LICENSE
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  - Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  - Neither the name of Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#ifndef IB_HDRS_H
#define IB_HDRS_H

#include <linux/types.h>
#include <asm/unaligned.h>
#include <rdma/ib_verbs.h>

#define IB_SEQ_NAK	(3 << 29)

/* AETH NAK opcode values */
#define IB_RNR_NAK                      0x20
#define IB_NAK_PSN_ERROR                0x60
#define IB_NAK_INVALID_REQUEST          0x61
#define IB_NAK_REMOTE_ACCESS_ERROR      0x62
#define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63
#define IB_NAK_INVALID_RD_REQUEST       0x64

#define IB_BTH_REQ_ACK		BIT(31)
#define IB_BTH_SOLICITED	BIT(23)
#define IB_BTH_MIG_REQ		BIT(22)

#define IB_GRH_VERSION		6
#define IB_GRH_VERSION_MASK	0xF
#define IB_GRH_VERSION_SHIFT	28
#define IB_GRH_TCLASS_MASK	0xFF
#define IB_GRH_TCLASS_SHIFT	20
#define IB_GRH_FLOW_MASK	0xFFFFF
#define IB_GRH_FLOW_SHIFT	0
#define IB_GRH_NEXT_HDR		0x1B
#define IB_FECN_SHIFT 31
#define IB_FECN_MASK 1
#define IB_FECN_SMASK BIT(IB_FECN_SHIFT)
#define IB_BECN_SHIFT 30
#define IB_BECN_MASK 1
#define IB_BECN_SMASK BIT(IB_BECN_SHIFT)

#define IB_AETH_CREDIT_SHIFT	24
#define IB_AETH_CREDIT_MASK	0x1F
#define IB_AETH_CREDIT_INVAL	0x1F
#define IB_AETH_NAK_SHIFT	29
#define IB_MSN_MASK		0xFFFFFF

struct ib_reth {
	__be64 vaddr;        /* potentially unaligned */
	__be32 rkey;
	__be32 length;
} __packed;

struct ib_atomic_eth {
	__be64 vaddr;        /* potentially unaligned */
	__be32 rkey;
	__be64 swap_data;    /* potentially unaligned */
	__be64 compare_data; /* potentially unaligned */
} __packed;

#include <rdma/tid_rdma_defs.h>

union ib_ehdrs {
	struct {
		__be32 deth[2];
		__be32 imm_data;
	} ud;
	struct {
		struct ib_reth reth;
		__be32 imm_data;
	} rc;
	struct {
		__be32 aeth;
		__be64 atomic_ack_eth; /* potentially unaligned */
	} __packed at;
	__be32 imm_data;
	__be32 aeth;
	__be32 ieth;
	struct ib_atomic_eth atomic_eth;
	/* TID RDMA headers */
	union {
		struct tid_rdma_read_req r_req;
		struct tid_rdma_read_resp r_rsp;
		struct tid_rdma_write_req w_req;
		struct tid_rdma_write_resp w_rsp;
		struct tid_rdma_write_data w_data;
		struct tid_rdma_resync resync;
		struct tid_rdma_ack ack;
	} tid_rdma;
}  __packed;

struct ib_other_headers {
	__be32 bth[3];
	union ib_ehdrs u;
} __packed;

struct ib_header {
	__be16 lrh[4];
	union {
		struct {
			struct ib_grh grh;
			struct ib_other_headers oth;
		} l;
		struct ib_other_headers oth;
	} u;
} __packed;

/* accessors for unaligned __be64 items */

static inline u64 ib_u64_get(__be64 *p)
{
	return get_unaligned_be64(p);
}

static inline void ib_u64_put(u64 val, __be64 *p)
{
	put_unaligned_be64(val, p);
}

static inline u64 get_ib_reth_vaddr(struct ib_reth *reth)
{
	return ib_u64_get(&reth->vaddr);
}

static inline void put_ib_reth_vaddr(u64 val, struct ib_reth *reth)
{
	ib_u64_put(val, &reth->vaddr);
}

static inline u64 get_ib_ateth_vaddr(struct ib_atomic_eth *ateth)
{
	return ib_u64_get(&ateth->vaddr);
}

static inline void put_ib_ateth_vaddr(u64 val, struct ib_atomic_eth *ateth)
{
	ib_u64_put(val, &ateth->vaddr);
}

static inline u64 get_ib_ateth_swap(struct ib_atomic_eth *ateth)
{
	return ib_u64_get(&ateth->swap_data);
}

static inline void put_ib_ateth_swap(u64 val, struct ib_atomic_eth *ateth)
{
	ib_u64_put(val, &ateth->swap_data);
}

static inline u64 get_ib_ateth_compare(struct ib_atomic_eth *ateth)
{
	return ib_u64_get(&ateth->compare_data);
}

static inline void put_ib_ateth_compare(u64 val, struct ib_atomic_eth *ateth)
{
	ib_u64_put(val, &ateth->compare_data);
}

/*
 * 9B/IB Packet Format
 */
#define IB_LNH_MASK		3
#define IB_SC_MASK		0xf
#define IB_SC_SHIFT		12
#define IB_SC5_MASK		0x10
#define IB_SL_MASK		0xf
#define IB_SL_SHIFT		4
#define IB_SL_SHIFT		4
#define IB_LVER_MASK	0xf
#define IB_LVER_SHIFT	8

static inline u8 ib_get_lnh(struct ib_header *hdr)
{
	return (be16_to_cpu(hdr->lrh[0]) & IB_LNH_MASK);
}

static inline u8 ib_get_sc(struct ib_header *hdr)
{
	return ((be16_to_cpu(hdr->lrh[0]) >> IB_SC_SHIFT) & IB_SC_MASK);
}

static inline bool ib_is_sc5(u16 sc5)
{
	return !!(sc5 & IB_SC5_MASK);
}

static inline u8 ib_get_sl(struct ib_header *hdr)
{
	return ((be16_to_cpu(hdr->lrh[0]) >> IB_SL_SHIFT) & IB_SL_MASK);
}

static inline u16 ib_get_dlid(struct ib_header *hdr)
{
	return (be16_to_cpu(hdr->lrh[1]));
}

static inline u16 ib_get_slid(struct ib_header *hdr)
{
	return (be16_to_cpu(hdr->lrh[3]));
}

static inline u8 ib_get_lver(struct ib_header *hdr)
{
	return (u8)((be16_to_cpu(hdr->lrh[0]) >> IB_LVER_SHIFT) &
		   IB_LVER_MASK);
}

static inline u16 ib_get_len(struct ib_header *hdr)
{
	return (u16)(be16_to_cpu(hdr->lrh[2]));
}

static inline u32 ib_get_qkey(struct ib_other_headers *ohdr)
{
	return be32_to_cpu(ohdr->u.ud.deth[0]);
}

static inline u32 ib_get_sqpn(struct ib_other_headers *ohdr)
{
	return ((be32_to_cpu(ohdr->u.ud.deth[1])) & IB_QPN_MASK);
}

/*
 * BTH
 */
#define IB_BTH_OPCODE_MASK	0xff
#define IB_BTH_OPCODE_SHIFT	24
#define IB_BTH_PAD_MASK	3
#define IB_BTH_PKEY_MASK	0xffff
#define IB_BTH_PAD_SHIFT	20
#define IB_BTH_A_MASK		1
#define IB_BTH_A_SHIFT		31
#define IB_BTH_M_MASK		1
#define IB_BTH_M_SHIFT		22
#define IB_BTH_SE_MASK		1
#define IB_BTH_SE_SHIFT	23
#define IB_BTH_TVER_MASK	0xf
#define IB_BTH_TVER_SHIFT	16

static inline u8 ib_bth_get_pad(struct ib_other_headers *ohdr)
{
	return ((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_PAD_SHIFT) &
		   IB_BTH_PAD_MASK);
}

static inline u16 ib_bth_get_pkey(struct ib_other_headers *ohdr)
{
	return (be32_to_cpu(ohdr->bth[0]) & IB_BTH_PKEY_MASK);
}

static inline u8 ib_bth_get_opcode(struct ib_other_headers *ohdr)
{
	return ((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_OPCODE_SHIFT) &
		   IB_BTH_OPCODE_MASK);
}

static inline u8 ib_bth_get_ackreq(struct ib_other_headers *ohdr)
{
	return (u8)((be32_to_cpu(ohdr->bth[2]) >> IB_BTH_A_SHIFT) &
		   IB_BTH_A_MASK);
}

static inline u8 ib_bth_get_migreq(struct ib_other_headers *ohdr)
{
	return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_M_SHIFT) &
		    IB_BTH_M_MASK);
}

static inline u8 ib_bth_get_se(struct ib_other_headers *ohdr)
{
	return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_SE_SHIFT) &
		    IB_BTH_SE_MASK);
}

static inline u32 ib_bth_get_psn(struct ib_other_headers *ohdr)
{
	return (u32)(be32_to_cpu(ohdr->bth[2]));
}

static inline u32 ib_bth_get_qpn(struct ib_other_headers *ohdr)
{
	return (u32)((be32_to_cpu(ohdr->bth[1])) & IB_QPN_MASK);
}

static inline bool ib_bth_get_becn(struct ib_other_headers *ohdr)
{
	return (ohdr->bth[1]) & cpu_to_be32(IB_BECN_SMASK);
}

static inline bool ib_bth_get_fecn(struct ib_other_headers *ohdr)
{
	return (ohdr->bth[1]) & cpu_to_be32(IB_FECN_SMASK);
}

static inline u8 ib_bth_get_tver(struct ib_other_headers *ohdr)
{
	return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_TVER_SHIFT)  &
		    IB_BTH_TVER_MASK);
}

static inline bool ib_bth_is_solicited(struct ib_other_headers *ohdr)
{
	return ohdr->bth[0] & cpu_to_be32(IB_BTH_SOLICITED);
}

static inline bool ib_bth_is_migration(struct ib_other_headers *ohdr)
{
	return ohdr->bth[0] & cpu_to_be32(IB_BTH_MIG_REQ);
}
#endif                          /* IB_HDRS_H */
Commit	Line	Data
7368ef02	1	/*
742a3826	2	* Copyright(c) 2016 - 2018 Intel Corporation.
7368ef02 MM	3	*
	4	* This file is provided under a dual BSD/GPLv2 license. When using or
	5	* redistributing this file, you may do so under either license.
	6	*
	7	* GPL LICENSE SUMMARY
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of version 2 of the GNU General Public License as
	11	* published by the Free Software Foundation.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* General Public License for more details.
	17	*
	18	* BSD LICENSE
	19	*
	20	* Redistribution and use in source and binary forms, with or without
	21	* modification, are permitted provided that the following conditions
	22	* are met:
	23	*
	24	* - Redistributions of source code must retain the above copyright
	25	* notice, this list of conditions and the following disclaimer.
	26	* - Redistributions in binary form must reproduce the above copyright
	27	* notice, this list of conditions and the following disclaimer in
	28	* the documentation and/or other materials provided with the
	29	* distribution.
	30	* - Neither the name of Intel Corporation nor the names of its
	31	* contributors may be used to endorse or promote products derived
	32	* from this software without specific prior written permission.
	33	*
	34	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	35	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	36	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	37	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	38	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	39	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	40	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	41	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	42	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	43	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	44	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	45	*
	46	*/
	47
	48	#ifndef IB_HDRS_H
	49	#define IB_HDRS_H
	50
	51	#include <linux/types.h>
	52	#include <asm/unaligned.h>
	53	#include <rdma/ib_verbs.h>
	54
	55	#define IB_SEQ_NAK (3 << 29)
	56
	57	/* AETH NAK opcode values */
	58	#define IB_RNR_NAK 0x20
	59	#define IB_NAK_PSN_ERROR 0x60
	60	#define IB_NAK_INVALID_REQUEST 0x61
	61	#define IB_NAK_REMOTE_ACCESS_ERROR 0x62
	62	#define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63
	63	#define IB_NAK_INVALID_RD_REQUEST 0x64
	64
	65	#define IB_BTH_REQ_ACK BIT(31)
	66	#define IB_BTH_SOLICITED BIT(23)
67	#define IB_BTH_MIG_REQ BIT(22)
68
69	#define IB_GRH_VERSION 6
70	#define IB_GRH_VERSION_MASK 0xF
71	#define IB_GRH_VERSION_SHIFT 28
72	#define IB_GRH_TCLASS_MASK 0xFF
73	#define IB_GRH_TCLASS_SHIFT 20
74	#define IB_GRH_FLOW_MASK 0xFFFFF
75	#define IB_GRH_FLOW_SHIFT 0
76	#define IB_GRH_NEXT_HDR 0x1B
3d591099 DH	77	#define IB_FECN_SHIFT 31
	78	#define IB_FECN_MASK 1
	79	#define IB_FECN_SMASK BIT(IB_FECN_SHIFT)
	80	#define IB_BECN_SHIFT 30
	81	#define IB_BECN_MASK 1
	82	#define IB_BECN_SMASK BIT(IB_BECN_SHIFT)
7368ef02	83
832666c1 DH	84	#define IB_AETH_CREDIT_SHIFT 24
	85	#define IB_AETH_CREDIT_MASK 0x1F
	86	#define IB_AETH_CREDIT_INVAL 0x1F
	87	#define IB_AETH_NAK_SHIFT 29
	88	#define IB_MSN_MASK 0xFFFFFF
	89
7368ef02 MM	90	struct ib_reth {
	91	__be64 vaddr; /* potentially unaligned */
	92	__be32 rkey;
	93	__be32 length;
	94	} __packed;
	95
	96	struct ib_atomic_eth {
	97	__be64 vaddr; /* potentially unaligned */
	98	__be32 rkey;
	99	__be64 swap_data; /* potentially unaligned */
	100	__be64 compare_data; /* potentially unaligned */
	101	} __packed;
	102
742a3826 KW	103	#include <rdma/tid_rdma_defs.h>
742a3826 KW	104
7368ef02 MM	105	union ib_ehdrs {
	106	struct {
	107	__be32 deth[2];
	108	__be32 imm_data;
	109	} ud;
	110	struct {
	111	struct ib_reth reth;
	112	__be32 imm_data;
	113	} rc;
	114	struct {
	115	__be32 aeth;
	116	__be64 atomic_ack_eth; /* potentially unaligned */
	117	} __packed at;
	118	__be32 imm_data;
	119	__be32 aeth;
	120	__be32 ieth;
	121	struct ib_atomic_eth atomic_eth;
742a3826 KW	122	/* TID RDMA headers */
	123	union {
	124	struct tid_rdma_read_req r_req;
	125	struct tid_rdma_read_resp r_rsp;
c098bbb0 KW	126	struct tid_rdma_write_req w_req;
	127	struct tid_rdma_write_resp w_rsp;
	128	struct tid_rdma_write_data w_data;
	129	struct tid_rdma_resync resync;
	130	struct tid_rdma_ack ack;
742a3826	131	} tid_rdma;
7368ef02 MM	132	} __packed;
	133
	134	struct ib_other_headers {
	135	__be32 bth[3];
	136	union ib_ehdrs u;
	137	} __packed;
	138
	139	struct ib_header {
	140	__be16 lrh[4];
	141	union {
	142	struct {
	143	struct ib_grh grh;
	144	struct ib_other_headers oth;
	145	} l;
	146	struct ib_other_headers oth;
	147	} u;
	148	} __packed;
	149
	150	/* accessors for unaligned __be64 items */
	151
	152	static inline u64 ib_u64_get(__be64 *p)
	153	{
	154	return get_unaligned_be64(p);
	155	}
	156
	157	static inline void ib_u64_put(u64 val, __be64 *p)
	158	{
	159	put_unaligned_be64(val, p);
	160	}
	161
	162	static inline u64 get_ib_reth_vaddr(struct ib_reth *reth)
	163	{
	164	return ib_u64_get(&reth->vaddr);
	165	}
	166
	167	static inline void put_ib_reth_vaddr(u64 val, struct ib_reth *reth)
	168	{
	169	ib_u64_put(val, &reth->vaddr);
	170	}
	171
	172	static inline u64 get_ib_ateth_vaddr(struct ib_atomic_eth *ateth)
	173	{
	174	return ib_u64_get(&ateth->vaddr);
	175	}
	176
	177	static inline void put_ib_ateth_vaddr(u64 val, struct ib_atomic_eth *ateth)
	178	{
	179	ib_u64_put(val, &ateth->vaddr);
	180	}
	181
	182	static inline u64 get_ib_ateth_swap(struct ib_atomic_eth *ateth)
	183	{
	184	return ib_u64_get(&ateth->swap_data);
	185	}
	186
	187	static inline void put_ib_ateth_swap(u64 val, struct ib_atomic_eth *ateth)
	188	{
	189	ib_u64_put(val, &ateth->swap_data);
	190	}
	191
	192	static inline u64 get_ib_ateth_compare(struct ib_atomic_eth *ateth)
	193	{
	194	return ib_u64_get(&ateth->compare_data);
	195	}
196
197	static inline void put_ib_ateth_compare(u64 val, struct ib_atomic_eth *ateth)
198	{
199	ib_u64_put(val, &ateth->compare_data);
200	}
201
cb427057 DH	202	/*
	203	* 9B/IB Packet Format
	204	*/
	205	#define IB_LNH_MASK 3
	206	#define IB_SC_MASK 0xf
	207	#define IB_SC_SHIFT 12
7dafbab3	208	#define IB_SC5_MASK 0x10
cb427057 DH	209	#define IB_SL_MASK 0xf
cb427057 DH	210	#define IB_SL_SHIFT 4
7dafbab3 DH	211	#define IB_SL_SHIFT 4
	212	#define IB_LVER_MASK 0xf
	213	#define IB_LVER_SHIFT 8
cb427057 DH	214
	215	static inline u8 ib_get_lnh(struct ib_header *hdr)
	216	{
	217	return (be16_to_cpu(hdr->lrh[0]) & IB_LNH_MASK);
	218	}
	219
	220	static inline u8 ib_get_sc(struct ib_header *hdr)
	221	{
	222	return ((be16_to_cpu(hdr->lrh[0]) >> IB_SC_SHIFT) & IB_SC_MASK);
	223	}
	224
7dafbab3 DH	225	static inline bool ib_is_sc5(u16 sc5)
	226	{
	227	return !!(sc5 & IB_SC5_MASK);
	228	}
	229
cb427057 DH	230	static inline u8 ib_get_sl(struct ib_header *hdr)
	231	{
	232	return ((be16_to_cpu(hdr->lrh[0]) >> IB_SL_SHIFT) & IB_SL_MASK);
	233	}
	234
	235	static inline u16 ib_get_dlid(struct ib_header *hdr)
	236	{
	237	return (be16_to_cpu(hdr->lrh[1]));
	238	}
	239
	240	static inline u16 ib_get_slid(struct ib_header *hdr)
	241	{
	242	return (be16_to_cpu(hdr->lrh[3]));
	243	}
	244
7dafbab3 DH	245	static inline u8 ib_get_lver(struct ib_header *hdr)
	246	{
	247	return (u8)((be16_to_cpu(hdr->lrh[0]) >> IB_LVER_SHIFT) &
	248	IB_LVER_MASK);
	249	}
	250
	251	static inline u16 ib_get_len(struct ib_header *hdr)
	252	{
	253	return (u16)(be16_to_cpu(hdr->lrh[2]));
	254	}
	255
	256	static inline u32 ib_get_qkey(struct ib_other_headers *ohdr)
	257	{
	258	return be32_to_cpu(ohdr->u.ud.deth[0]);
	259	}
	260
	261	static inline u32 ib_get_sqpn(struct ib_other_headers *ohdr)
	262	{
	263	return ((be32_to_cpu(ohdr->u.ud.deth[1])) & IB_QPN_MASK);
	264	}
	265
cb427057 DH	266	/*
	267	* BTH
	268	*/
	269	#define IB_BTH_OPCODE_MASK 0xff
	270	#define IB_BTH_OPCODE_SHIFT 24
	271	#define IB_BTH_PAD_MASK 3
	272	#define IB_BTH_PKEY_MASK 0xffff
	273	#define IB_BTH_PAD_SHIFT 20
7dafbab3 DH	274	#define IB_BTH_A_MASK 1
	275	#define IB_BTH_A_SHIFT 31
	276	#define IB_BTH_M_MASK 1
	277	#define IB_BTH_M_SHIFT 22
	278	#define IB_BTH_SE_MASK 1
	279	#define IB_BTH_SE_SHIFT 23
	280	#define IB_BTH_TVER_MASK 0xf
	281	#define IB_BTH_TVER_SHIFT 16
cb427057 DH	282
	283	static inline u8 ib_bth_get_pad(struct ib_other_headers *ohdr)
	284	{
	285	return ((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_PAD_SHIFT) &
	286	IB_BTH_PAD_MASK);
	287	}
	288
	289	static inline u16 ib_bth_get_pkey(struct ib_other_headers *ohdr)
	290	{
	291	return (be32_to_cpu(ohdr->bth[0]) & IB_BTH_PKEY_MASK);
	292	}
	293
	294	static inline u8 ib_bth_get_opcode(struct ib_other_headers *ohdr)
	295	{
	296	return ((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_OPCODE_SHIFT) &
	297	IB_BTH_OPCODE_MASK);
	298	}
	299
7dafbab3 DH	300	static inline u8 ib_bth_get_ackreq(struct ib_other_headers *ohdr)
	301	{
	302	return (u8)((be32_to_cpu(ohdr->bth[2]) >> IB_BTH_A_SHIFT) &
	303	IB_BTH_A_MASK);
	304	}
	305
	306	static inline u8 ib_bth_get_migreq(struct ib_other_headers *ohdr)
	307	{
	308	return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_M_SHIFT) &
	309	IB_BTH_M_MASK);
	310	}
	311
	312	static inline u8 ib_bth_get_se(struct ib_other_headers *ohdr)
	313	{
	314	return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_SE_SHIFT) &
	315	IB_BTH_SE_MASK);
	316	}
	317
	318	static inline u32 ib_bth_get_psn(struct ib_other_headers *ohdr)
	319	{
	320	return (u32)(be32_to_cpu(ohdr->bth[2]));
	321	}
	322
	323	static inline u32 ib_bth_get_qpn(struct ib_other_headers *ohdr)
	324	{
	325	return (u32)((be32_to_cpu(ohdr->bth[1])) & IB_QPN_MASK);
	326	}
	327
ca85bb1c	328	static inline bool ib_bth_get_becn(struct ib_other_headers *ohdr)
7dafbab3	329	{
ca85bb1c	330	return (ohdr->bth[1]) & cpu_to_be32(IB_BECN_SMASK);
7dafbab3 DH	331	}
7dafbab3 DH	332
ca85bb1c	333	static inline bool ib_bth_get_fecn(struct ib_other_headers *ohdr)
7dafbab3	334	{
ca85bb1c	335	return (ohdr->bth[1]) & cpu_to_be32(IB_FECN_SMASK);
7dafbab3 DH	336	}
	337
	338	static inline u8 ib_bth_get_tver(struct ib_other_headers *ohdr)
	339	{
	340	return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_TVER_SHIFT) &
	341	IB_BTH_TVER_MASK);
	342	}
	343
f150e273 SS	344	static inline bool ib_bth_is_solicited(struct ib_other_headers *ohdr)
	345	{
	346	return ohdr->bth[0] & cpu_to_be32(IB_BTH_SOLICITED);
	347	}
6d6b8848 SS	348
	349	static inline bool ib_bth_is_migration(struct ib_other_headers *ohdr)
	350	{
	351	return ohdr->bth[0] & cpu_to_be32(IB_BTH_MIG_REQ);
	352	}
7368ef02	353	#endif /* IB_HDRS_H */