RDMA/hfi1: Avoid redeclaration error

Move hfi1 ioctl definitions to a new header which can be included by
both the hfi1 and qib drivers to avoid a duplicate enum definition
as shown in this build error for qib:

CC [M] drivers/infiniband/hw/qib/qib_sysfs.o
In file included from ./include/uapi/rdma/rdma_user_ioctl.h:39:0,
from include/uapi/rdma/ib_user_mad.h:38,
from include/rdma/ib_mad.h:43,
from include/rdma/ib_pma.h:38,
from drivers/infiniband/hw/qib/qib_mad.h:37,
from drivers/infiniband/hw/qib/qib_init.c:49:
./include/uapi/rdma/hfi/hfi1_user.h:370:2: error: redeclaration of
enumerator ‘ur_rcvhdrtail’
ur_rcvhdrtail = 0,

Move hfi1 structures to separate file to avoid this failure.

The actual move of the ioctl definitions comes in a follow on patch.

Signed-off-by: Matan Barak <[e-mail]>
Signed-off-by: Haggai Eran <[e-mail]>
Signed-off-by: Leon Romanovsky <[e-mail]>
Reviewed-by: Jason Gunthorpe <[e-mail]>
Signed-off-by: Doug Ledford <[e-mail]>

include/uapi/rdma/hfi/Kbuild

···
 # UAPI Header export list
 header-y += hfi1_user.h
+header-y += hfi1_ioctl.h

include/uapi/rdma/hfi/hfi1_ioctl.h

···
+/*
+ *
+ * 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
+ *
+ * Copyright(c) 2015 Intel Corporation.
+ *
+ * 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
+ *
+ * Copyright(c) 2015 Intel Corporation.
+ *
+ * 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 _LINUX__HFI1_IOCTL_H
+#define _LINUX__HFI1_IOCTL_H
+#include <linux/types.h>
+
+/*
+ * This structure is passed to the driver to tell it where
+ * user code buffers are, sizes, etc.   The offsets and sizes of the
+ * fields must remain unchanged, for binary compatibility.  It can
+ * be extended, if userversion is changed so user code can tell, if needed
+ */
+struct hfi1_user_info {
+	/*
+	 * version of user software, to detect compatibility issues.
+	 * Should be set to HFI1_USER_SWVERSION.
+	 */
+	__u32 userversion;
+	__u32 pad;
+	/*
+	 * If two or more processes wish to share a context, each process
+	 * must set the subcontext_cnt and subcontext_id to the same
+	 * values.  The only restriction on the subcontext_id is that
+	 * it be unique for a given node.
+	 */
+	__u16 subctxt_cnt;
+	__u16 subctxt_id;
+	/* 128bit UUID passed in by PSM. */
+	__u8 uuid[16];
+};
+
+struct hfi1_ctxt_info {
+	__u64 runtime_flags;    /* chip/drv runtime flags (HFI1_CAP_*) */
+	__u32 rcvegr_size;      /* size of each eager buffer */
+	__u16 num_active;       /* number of active units */
+	__u16 unit;             /* unit (chip) assigned to caller */
+	__u16 ctxt;             /* ctxt on unit assigned to caller */
+	__u16 subctxt;          /* subctxt on unit assigned to caller */
+	__u16 rcvtids;          /* number of Rcv TIDs for this context */
+	__u16 credits;          /* number of PIO credits for this context */
+	__u16 numa_node;        /* NUMA node of the assigned device */
+	__u16 rec_cpu;          /* cpu # for affinity (0xffff if none) */
+	__u16 send_ctxt;        /* send context in use by this user context */
+	__u16 egrtids;          /* number of RcvArray entries for Eager Rcvs */
+	__u16 rcvhdrq_cnt;      /* number of RcvHdrQ entries */
+	__u16 rcvhdrq_entsize;  /* size (in bytes) for each RcvHdrQ entry */
+	__u16 sdma_ring_size;   /* number of entries in SDMA request ring */
+};
+
+struct hfi1_tid_info {
+	/* virtual address of first page in transfer */
+	__u64 vaddr;
+	/* pointer to tid array. this array is big enough */
+	__u64 tidlist;
+	/* number of tids programmed by this request */
+	__u32 tidcnt;
+	/* length of transfer buffer programmed by this request */
+	__u32 length;
+};
+
+/*
+ * This structure is returned by the driver immediately after
+ * open to get implementation-specific info, and info specific to this
+ * instance.
+ *
+ * This struct must have explicit pad fields where type sizes
+ * may result in different alignments between 32 and 64 bit
+ * programs, since the 64 bit * bit kernel requires the user code
+ * to have matching offsets
+ */
+struct hfi1_base_info {
+	/* version of hardware, for feature checking. */
+	__u32 hw_version;
+	/* version of software, for feature checking. */
+	__u32 sw_version;
+	/* Job key */
+	__u16 jkey;
+	__u16 padding1;
+	/*
+	 * The special QP (queue pair) value that identifies PSM
+	 * protocol packet from standard IB packets.
+	 */
+	__u32 bthqp;
+	/* PIO credit return address, */
+	__u64 sc_credits_addr;
+	/*
+	 * Base address of write-only pio buffers for this process.
+	 * Each buffer has sendpio_credits*64 bytes.
+	 */
+	__u64 pio_bufbase_sop;
+	/*
+	 * Base address of write-only pio buffers for this process.
+	 * Each buffer has sendpio_credits*64 bytes.
+	 */
+	__u64 pio_bufbase;
+	/* address where receive buffer queue is mapped into */
+	__u64 rcvhdr_bufbase;
+	/* base address of Eager receive buffers. */
+	__u64 rcvegr_bufbase;
+	/* base address of SDMA completion ring */
+	__u64 sdma_comp_bufbase;
+	/*
+	 * User register base for init code, not to be used directly by
+	 * protocol or applications.  Always maps real chip register space.
+	 * the register addresses are:
+	 * ur_rcvhdrhead, ur_rcvhdrtail, ur_rcvegrhead, ur_rcvegrtail,
+	 * ur_rcvtidflow
+	 */
+	__u64 user_regbase;
+	/* notification events */
+	__u64 events_bufbase;
+	/* status page */
+	__u64 status_bufbase;
+	/* rcvhdrtail update */
+	__u64 rcvhdrtail_base;
+	/*
+	 * shared memory pages for subctxts if ctxt is shared; these cover
+	 * all the processes in the group sharing a single context.
+	 * all have enough space for the num_subcontexts value on this job.
+	 */
+	__u64 subctxt_uregbase;
+	__u64 subctxt_rcvegrbuf;
+	__u64 subctxt_rcvhdrbuf;
+};
+#endif /* _LINIUX__HFI1_IOCTL_H */

include/uapi/rdma/hfi/hfi1_user.h

···
 
 #include <linux/types.h>
 #include <rdma/rdma_user_ioctl.h>
+#include <rdma/hfi/hfi1_ioctl.h>
 
 /*
  * This version number is given to the driver by the user code during
···
 #define HFI1_POLL_TYPE_ANYRCV     0x0
 #define HFI1_POLL_TYPE_URGENT     0x1
 
-/*
- * This structure is passed to the driver to tell it where
- * user code buffers are, sizes, etc.   The offsets and sizes of the
- * fields must remain unchanged, for binary compatibility.  It can
- * be extended, if userversion is changed so user code can tell, if needed
- */
-struct hfi1_user_info {
-	/*
-	 * version of user software, to detect compatibility issues.
-	 * Should be set to HFI1_USER_SWVERSION.
-	 */
-	__u32 userversion;
-	__u32 pad;
-	/*
-	 * If two or more processes wish to share a context, each process
-	 * must set the subcontext_cnt and subcontext_id to the same
-	 * values.  The only restriction on the subcontext_id is that
-	 * it be unique for a given node.
-	 */
-	__u16 subctxt_cnt;
-	__u16 subctxt_id;
-	/* 128bit UUID passed in by PSM. */
-	__u8 uuid[16];
-};
-
-struct hfi1_ctxt_info {
-	__u64 runtime_flags;    /* chip/drv runtime flags (HFI1_CAP_*) */
-	__u32 rcvegr_size;      /* size of each eager buffer */
-	__u16 num_active;       /* number of active units */
-	__u16 unit;             /* unit (chip) assigned to caller */
-	__u16 ctxt;             /* ctxt on unit assigned to caller */
-	__u16 subctxt;          /* subctxt on unit assigned to caller */
-	__u16 rcvtids;          /* number of Rcv TIDs for this context */
-	__u16 credits;          /* number of PIO credits for this context */
-	__u16 numa_node;        /* NUMA node of the assigned device */
-	__u16 rec_cpu;          /* cpu # for affinity (0xffff if none) */
-	__u16 send_ctxt;        /* send context in use by this user context */
-	__u16 egrtids;          /* number of RcvArray entries for Eager Rcvs */
-	__u16 rcvhdrq_cnt;      /* number of RcvHdrQ entries */
-	__u16 rcvhdrq_entsize;  /* size (in bytes) for each RcvHdrQ entry */
-	__u16 sdma_ring_size;   /* number of entries in SDMA request ring */
-};
-
-struct hfi1_tid_info {
-	/* virtual address of first page in transfer */
-	__u64 vaddr;
-	/* pointer to tid array. this array is big enough */
-	__u64 tidlist;
-	/* number of tids programmed by this request */
-	__u32 tidcnt;
-	/* length of transfer buffer programmed by this request */
-	__u32 length;
-};
-
 enum hfi1_sdma_comp_state {
 	FREE = 0,
 	QUEUED,
···
 	__u64 dev;      /* device/hw status bits */
 	__u64 port;     /* port state and status bits */
 	char freezemsg[0];
-};
-
-/*
- * This structure is returned by the driver immediately after
- * open to get implementation-specific info, and info specific to this
- * instance.
- *
- * This struct must have explicit pad fields where type sizes
- * may result in different alignments between 32 and 64 bit
- * programs, since the 64 bit * bit kernel requires the user code
- * to have matching offsets
- */
-struct hfi1_base_info {
-	/* version of hardware, for feature checking. */
-	__u32 hw_version;
-	/* version of software, for feature checking. */
-	__u32 sw_version;
-	/* Job key */
-	__u16 jkey;
-	__u16 padding1;
-	/*
-	 * The special QP (queue pair) value that identifies PSM
-	 * protocol packet from standard IB packets.
-	 */
-	__u32 bthqp;
-	/* PIO credit return address, */
-	__u64 sc_credits_addr;
-	/*
-	 * Base address of write-only pio buffers for this process.
-	 * Each buffer has sendpio_credits*64 bytes.
-	 */
-	__u64 pio_bufbase_sop;
-	/*
-	 * Base address of write-only pio buffers for this process.
-	 * Each buffer has sendpio_credits*64 bytes.
-	 */
-	__u64 pio_bufbase;
-	/* address where receive buffer queue is mapped into */
-	__u64 rcvhdr_bufbase;
-	/* base address of Eager receive buffers. */
-	__u64 rcvegr_bufbase;
-	/* base address of SDMA completion ring */
-	__u64 sdma_comp_bufbase;
-	/*
-	 * User register base for init code, not to be used directly by
-	 * protocol or applications.  Always maps real chip register space.
-	 * the register addresses are:
-	 * ur_rcvhdrhead, ur_rcvhdrtail, ur_rcvegrhead, ur_rcvegrtail,
-	 * ur_rcvtidflow
-	 */
-	__u64 user_regbase;
-	/* notification events */
-	__u64 events_bufbase;
-	/* status page */
-	__u64 status_bufbase;
-	/* rcvhdrtail update */
-	__u64 rcvhdrtail_base;
-	/*
-	 * shared memory pages for subctxts if ctxt is shared; these cover
-	 * all the processes in the group sharing a single context.
-	 * all have enough space for the num_subcontexts value on this job.
-	 */
-	__u64 subctxt_uregbase;
-	__u64 subctxt_rcvegrbuf;
-	__u64 subctxt_rcvhdrbuf;
 };
 
 enum sdma_req_opcode {